/* ========================================
   顶部信息栏样式
======================================== */
.top-bar {
    background: var(--gradient-dark-hero);
    /* R14-S: --color-text-inverse 在深色主题 (T2/T6/T8/T9/T10) 会计算成深色,
       叠在永远深色的 --gradient-dark-hero 上会黑叠黑; 改用 --color-footer-text
       (每个主题都显式声明为"深底上的浅色"), 与 .site-footer 同设计语义 */
    color: var(--color-footer-text);             /* R14-S: was --color-text-inverse */
    font-size: 13px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

.top-bar-left,
.top-bar-right {
    display: flex;
    align-items: center;
}

.top-bar-text,
.top-bar-link {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color 0.3s ease;
}

.top-bar-link:hover {
    color: #00cc88;
}

.top-bar-text i,
.top-bar-link i {
    margin-right: 5px;
    color: #00cc88;
}

.top-bar-divider {
    margin: 0 15px;
    color: rgba(255, 255, 255, 0.3);
}

.site-header {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

.header-logo {
    flex-shrink: 0;
}

.logo-link {
    display: block;
    text-decoration: none;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-image {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: var(--shadow-glow-primary);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text); /* R14-Q: was #1a1a1a, 深色主题不可见 */
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: 11px;
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.main-nav {
    flex-grow: 1;
    margin: 0 40px;
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 5px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 12px 20px;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    position: relative;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--gradient-brand-90);
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

.nav-item:hover .nav-link,
.nav-item.active .nav-link {
    color: var(--color-primary);
}

.nav-item:hover .nav-link::before,
.nav-item.active .nav-link::before {
    width: 100%;
}

.nav-arrow {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: var(--color-text-placeholder);      /* R14-C5: was #999999 (Δ +46 manhattan, cold-shift) */
    transition: transform 0.3s ease;
}

.nav-item:hover .nav-arrow {
    transform: translateY(-50%) rotate(180deg);
}

.sub-nav {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    min-width: 220px;
    box-shadow: var(--shadow-dropdown);
    border-radius: 8px;
    padding: 10px 0;
    margin-top: 10px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 100;
}

.nav-item:hover .sub-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sub-nav::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 30px;
    width: 12px;
    height: 12px;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    transform: rotate(45deg);
}

.sub-nav-item {
    margin: 0;
}

.sub-nav-link {
    display: block;
    padding: 10px 20px;
    color: var(--color-text-secondary); /* R14-Q: was #555555 */
    font-size: 14px;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.sub-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--color-primary);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.sub-nav-link:hover {
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.05);
    padding-left: 25px;
}

.sub-nav-link:hover::before {
    transform: scaleY(1);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.search-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gradient-brand);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.search-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-primary);
}

.search-panel {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    box-shadow: var(--shadow-dropdown);
    padding: 30px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: all 0.3s ease;
}

.search-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.search-form {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-input-wrapper {
    flex: 1;
    display: flex;
    background: var(--color-bg-secondary);            /* R14-D3: was #f5f5f5 (Δ 15, cold-shift) */
    border-radius: 50px;
    overflow: hidden;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.search-input-wrapper:focus-within {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

.search-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 15px 25px;
    font-size: 15px;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    outline: none;
}

.search-input::placeholder {
    color: var(--color-text-placeholder);      /* R14-C5: was #999999 (Δ +46 manhattan, cold-shift) */
}

.search-submit {
    padding: 15px 35px;
    background: var(--gradient-brand);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border: none;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.search-submit:hover {
    background: var(--gradient-brand-reverse);
}

.search-close {
    width: 44px;
    height: 44px;
    border: none;
    background: var(--color-bg-secondary);            /* R14-D3: was #f5f5f5 (Δ 15, cold-shift) */
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 18px;
}

.search-close:hover {
    background: #ff4444;
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    transform: rotate(90deg);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-line {
    width: 100%;
    height: 3px;
    background: var(--color-bg-dark-secondary);   /* R14-D4: was #333333 */
    border-radius: 3px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active .menu-line:nth-child(1) {
    transform: translateY(9.5px) rotate(45deg);
}

.mobile-menu-toggle.active .menu-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .menu-line:nth-child(3) {
    transform: translateY(-9.5px) rotate(-45deg);
}

.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* 去掉背景渐变，完全透明 */
    background: transparent;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 2000;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 380px;
    height: 100vh;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    box-shadow: -10px 0 50px rgba(0, 0, 0, 0.5);
    transition: right 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 2001;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-header {
    padding: 20px 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gradient-dark-hero);
    min-height: 70px;
    box-shadow: var(--shadow-sm);
}

.mobile-nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-nav-logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.mobile-nav-logo span {
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.mobile-nav-close {
    width: 40px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border-radius: 50%;
    cursor: pointer;
    font-size: 22px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.mobile-nav-close:hover,
.mobile-nav-close:active {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: rotate(90deg);
}

.mobile-nav-body {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    -webkit-overflow-scrolling: touch;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
}

.mobile-nav-body::-webkit-scrollbar {
    width: 6px;
}

.mobile-nav-body::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);            /* R14-D3: was #f8f8f8 (Δ 6) */
}

.mobile-nav-body::-webkit-scrollbar-thumb {
    background: var(--gradient-dark-hero-vertical);
    border-radius: 3px;
}

.mobile-nav-body::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-dark-hero-reverse-v);
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 15px 0;
}

.mobile-nav-item {
    position: relative;
    border-bottom: 1px solid #f0f0f0;
}

.mobile-nav-item.has-children .mobile-nav-link {
    padding-right: 60px;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    padding: 18px 25px;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    white-space: nowrap;
}

.mobile-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-dark-hero-vertical);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.mobile-nav-item.active > .mobile-nav-link {
    color: var(--color-text); /* R14-Q: was #1a1a1a, 深色主题不可见 */
    background: var(--gradient-tint-left);
}

.mobile-nav-item.active > .mobile-nav-link::before {
    transform: scaleY(1);
}

.mobile-nav-expand {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    border: none;
    background: var(--color-bg-secondary);            /* R14-D3: was #f5f5f5 (Δ 15, cold-shift) */
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-nav-item.expanded .mobile-nav-expand {
    transform: translateY(-50%) rotate(180deg);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    background: var(--gradient-dark-hero);
}

.mobile-sub-nav {
    list-style: none;
    margin: 0;
    padding: 0;
    background: var(--gradient-neutral-soft);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease, padding 0.4s ease;
    opacity: 0;
    width: 100%;
    position: relative;
    display: block;
}

.mobile-nav-item.expanded .mobile-sub-nav {
    max-height: 800px;
    border-top: 1px solid #e0e0e0;
    border-bottom: 1px solid #e0e0e0;
    opacity: 1;
    padding: 8px 0;
}

.mobile-sub-nav-item {
    border-bottom: none;
    background: transparent;
}

.mobile-sub-nav-item:last-child {
    border-bottom: none;
}

.mobile-sub-nav-link {
    display: block;
    padding: 14px 25px 14px 50px;
    color: var(--color-text-secondary); /* R14-Q: was #555555 */
    font-size: 15px;
    text-decoration: none;
    position: relative;
    transition: all 0.3s ease;
    background: transparent;
}

.mobile-sub-nav-link::before {
    content: '';
    position: absolute;
    left: 32px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--color-bg-dark-secondary);   /* R14-D4: was #2d2d2d */
    border-radius: 50%;
    transition: all 0.3s ease;
}

.mobile-sub-nav-link:active,
.mobile-sub-nav-link:hover {
    color: var(--color-text); /* R14-Q: was #1a1a1a, 深色主题不可见 */
    background: rgba(var(--color-primary-rgb), 0.08); /* R14-Q: was rgba(26,26,26,.08) */
    padding-left: 55px;
}

.mobile-sub-nav-link:active::before,
.mobile-sub-nav-link:hover::before {
    width: 8px;
    height: 8px;
    left: 34px;
    background: var(--color-bg-dark);             /* R14-D4: was #1a1a1a */
}

.mobile-nav-footer {
    padding: 20px 25px;
    border-top: 1px solid #e8e8e8;
    background: var(--gradient-neutral-soft-vertical);
}

.mobile-nav-contact {
    display: block;
}

.mobile-contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 20px;
    background: var(--gradient-dark-hero);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    text-decoration: none;
    border-radius: var(--radius-btn-lg);
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.mobile-contact-item:active,
.mobile-contact-item:hover {
    transform: scale(0.98);
    box-shadow: var(--shadow-sm);
    background: var(--gradient-dark-hero-reverse);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    text-decoration: none;
}

.mobile-contact-item i {
    font-size: 18px;
}

@media (max-width: 991px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .search-toggle {
        display: none;
    }
    
    .logo-subtitle {
        display: none;
    }
    
    .logo-title {
        font-size: 20px;
    }
    
    .top-bar-text {
        font-size: 12px;
    }
    
    .top-bar-divider {
        display: none;
    }
}

@media (max-width: 768px) {
    .top-bar-left,
    .top-bar-right {
        font-size: 11px;
    }
    
    .top-bar-text span {
        display: none;
    }
    
    .header-wrapper {
        padding: 10px 0;
    }
    
    .logo-image {
        width: 40px;
        height: 40px;
    }
    
    .logo-title {
        font-size: 18px;
    }
    
    .mobile-nav {
        max-width: 320px;
    }
    
    .mobile-nav-link {
        font-size: 15px;
        padding: 16px 20px;
    }
    
    .mobile-nav-item.has-children .mobile-nav-link {
        padding-right: 55px;
    }
    
    .mobile-sub-nav-link {
        font-size: 14px;
        padding: 12px 20px 12px 45px;
    }
    
    .mobile-sub-nav-link::before {
        left: 28px;
    }
    
    .mobile-sub-nav-link:active,
    .mobile-sub-nav-link:hover {
        padding-left: 50px;
    }
    
    .mobile-sub-nav-link:active::before,
    .mobile-sub-nav-link:hover::before {
        left: 30px;
    }
}

@media (max-width: 576px) {
    .top-bar-content {
        flex-direction: column;
        gap: 5px;
        padding: 8px 0;
        text-align: center;
    }
    
    .top-bar-left {
        width: 100%;
        justify-content: center;
    }
    
    .top-bar-right {
        width: 100%;
        justify-content: center;
    }
    
    .mobile-nav {
        max-width: 100%;
    }
    
    .mobile-nav-header {
        padding: 18px 20px;
        min-height: 65px;
    }
    
    .mobile-nav-logo span {
        font-size: 18px;
        letter-spacing: -0.3px;
    }
    
    .mobile-nav-logo img {
        width: 36px;
        height: 36px;
    }
    
    .mobile-nav-close {
        width: 38px;
        height: 38px;
        font-size: 20px;
    }
    
    .mobile-nav-link {
        padding: 15px 20px;
    }
    
    .mobile-nav-item.has-children .mobile-nav-link {
        padding-right: 50px;
    }
    
    .mobile-nav-expand {
        right: 15px;
        width: 32px;
        height: 32px;
    }
    
    .mobile-contact-item {
        padding: 14px 18px;
        font-size: 15px;
    }
}

@media (max-width: 400px) {
    .mobile-nav-link {
        font-size: 14px;
    }
    
    .mobile-sub-nav-link {
        font-size: 13px;
        padding-left: 40px;
    }
    
    .mobile-sub-nav-link::before {
        left: 25px;
    }
    
    .mobile-sub-nav-link:active,
    .mobile-sub-nav-link:hover {
        padding-left: 45px;
    }
    
    .mobile-sub-nav-link:active::before,
    .mobile-sub-nav-link:hover::before {
        left: 27px;
    }
}
/* ========================================
   通用首页主页样式
======================================== */
/* R14-M (2026-04-22): --ip-* token 定义修复 —
   原 `.index-page :root` 选择器是典型误写: `.index-page` 是 <main> 不是
   <html> 的祖先, descendant combinator 使整块永不命中, 所有 --ip-* 从未
   被定义, 导致 btn-primary / card / headline 全部回落 Bootstrap 默认
   (#007bff 蓝等) —— 这是用户截图"查看详情按钮是冷色"的直接成因。
   修复:
     1. 选择器改为 `.index-page` (自身 + 后代都能取到)
     2. 值全部改为 theme token 引用, --ip-* 语义不变但跟 theme-N 联动 */
.index-page {
    --ip-primary-color: var(--color-text);
    --ip-secondary-color: var(--color-primary);
    --ip-accent-color: #e74c3c;           /* 红: 价格/删除等 semantic 标识, 不跟主题 */
    --ip-success-color: #27ae60;          /* 绿: 对勾/成功 semantic */
    --ip-warning-color: #f39c12;          /* 橙黄: 警告 semantic */
    --ip-text-color: var(--color-text);
    --ip-text-light: var(--color-text-secondary);
    --ip-text-lighter: var(--color-text-muted);
    --ip-border-color: var(--color-border);
    --ip-bg-light: var(--color-bg-secondary);
    --ip-bg-white: var(--color-bg-primary);
    --ip-shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --ip-shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --ip-shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --ip-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --ip-radius-sm: 6px;
    --ip-radius-md: 8px;
    --ip-radius-lg: 12px;
}

.index-page {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.index-page .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.index-page section {
    padding: 60px 0;
}

.index-page .section-header {
    text-align: center;
    margin-bottom: 50px;
}

.index-page .section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--ip-primary-color);
    margin-bottom: 15px;
}

.index-page .section-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--ip-secondary-color), var(--ip-accent-color));
    margin: 0 auto 15px;
    border-radius: 2px;
}

.index-page .section-subtitle {
    font-size: 16px;
    color: var(--ip-text-light);
}

.index-page .section-lead {
    font-size: 16px;
    color: var(--ip-text-light);
    margin-bottom: 10px;
}

.index-page .section-footer {
    text-align: center;
    margin-top: 40px;
}

.index-page .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--ip-radius-sm);
    transition: var(--ip-transition);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
}

.index-page .btn-primary {
    background-color: var(--ip-secondary-color);
    color: var(--ip-bg-white);
    border-color: var(--ip-secondary-color);
}

.index-page .btn-primary:hover {
    /* R14-M: was #2980b9 蓝色 hover 硬码, 改为主色 hover 跟主题 */
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--ip-shadow-md);
}

.index-page .btn-outline-primary {
    background-color: transparent;
    color: var(--ip-secondary-color);
    border-color: var(--ip-secondary-color);
}

.index-page .btn-outline-primary:hover {
    background-color: var(--ip-secondary-color);
    color: var(--ip-bg-white);
    transform: translateY(-2px);
}

.index-page .btn-lg {
    padding: 14px 36px;
    font-size: 16px;
}

.index-page .btn-sm {
    padding: 8px 18px;
    font-size: 14px;
}

.index-page .btn-block {
    display: flex;
    width: 100%;
}

.index-page .empty-state {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.index-page .empty-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--ip-bg-light);
    border-radius: 50%;
    margin-bottom: 20px;
}

.index-page .empty-icon i {
    font-size: 36px;
    color: var(--ip-text-lighter);
}

.index-page .empty-text {
    font-size: 16px;
    color: var(--ip-text-light);
}

.index-page .index-quick-nav {
    padding: 30px 0;
    background-color: var(--ip-bg-white);
    border-bottom: 1px solid var(--ip-border-color);
}

.index-page .quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 15px;
}

.index-page .quick-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 10px;
    background-color: var(--ip-bg-light);
    border-radius: var(--ip-radius-md);
    text-decoration: none;
    color: var(--ip-text-color);
    transition: var(--ip-transition);
}

.index-page .quick-nav-item:hover {
    background-color: var(--ip-secondary-color);
    color: var(--ip-bg-white);
    transform: translateY(-3px);
    box-shadow: var(--ip-shadow-md);
}

.index-page .nav-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--ip-bg-white);
    border-radius: 50%;
    margin-bottom: 10px;
    transition: var(--ip-transition);
}

.index-page .quick-nav-item:hover .nav-icon {
    background-color: rgba(255, 255, 255, 0.2);
}

.index-page .nav-icon i {
    font-size: 24px;
    color: var(--ip-secondary-color);
    transition: var(--ip-transition);
}

.index-page .quick-nav-item:hover .nav-icon i {
    color: var(--ip-bg-white);
}

.index-page .nav-text {
    font-size: 14px;
    font-weight: 600;
    text-align: center;
}

.index-page .index-about {
    background-color: var(--ip-bg-light);
}

.index-page .about-content {
    max-width: 900px;
    margin: 0 auto;
}

.index-page .about-text {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 30px;
}

.index-page .about-text p {
    margin-bottom: 15px;
    text-align: justify;
}

.index-page .about-actions {
    text-align: center;
}

.index-page .index-products {
    background-color: var(--ip-bg-white);
}

.index-page .products-wrapper {
    position: relative;
}

.index-page .products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.index-page .product-card {
    background-color: var(--ip-bg-white);
    border: 1px solid var(--ip-border-color);
    border-radius: var(--ip-radius-md);
    overflow: hidden;
    transition: var(--ip-transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.index-page .product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--ip-shadow-lg);
    border-color: var(--ip-secondary-color);
}

.index-page .product-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background-color: var(--ip-accent-color);
    color: var(--ip-bg-white);
    padding: 4px 12px;
    border-radius: var(--ip-radius-sm);
    font-size: 12px;
    font-weight: 600;
    z-index: 1;
}

.index-page .badge-top {
    background-color: var(--ip-warning-color);
}

.index-page .badge-recommend {
    background-color: var(--ip-accent-color);
}

.index-page .product-image {
    position: relative;
    overflow: hidden;
    background-color: var(--ip-bg-light);
    padding: 25px;
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.index-page .product-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: var(--ip-transition);
}

.index-page .product-card:hover .product-image img {
    transform: scale(1.08);
}

.index-page .product-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.index-page .product-name {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
}

.index-page .product-name a {
    color: var(--ip-primary-color);
    text-decoration: none;
    transition: var(--ip-transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.index-page .product-name a:hover {
    color: var(--ip-secondary-color);
}

.index-page .product-desc {
    font-size: 14px;
    color: var(--ip-text-light);
    margin-bottom: 15px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.index-page .product-meta {
    margin-bottom: 12px;
}

.index-page .index-comparison-preview {
    background-color: var(--color-bg-primary);      /* R14-D1: was #ffffff */
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.index-page .index-comparison-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* R14-M: was rgba(52,152,219)+rgba(155,89,182) 蓝紫底纹, 改主色 rgb 双晕 */
    background:
        radial-gradient(circle at 20% 30%, rgba(var(--color-primary-rgb), 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(var(--color-primary-rgb), 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.index-page .index-comparison-preview .container {
    position: relative;
    z-index: 1;
}

.index-page .index-comparison-preview .section-header {
    margin-bottom: 60px;
}

.index-page .index-comparison-preview .section-title {
    /* R14-M: was #2c3e50 slate-dark, 改主题正文色 */
    color: var(--color-text);
    font-size: 36px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 18px;
}

.index-page .index-comparison-preview .section-divider {
    /* R14-M: was transparent→#3498db→#9b59b6→transparent (蓝紫渐变 hr), 改主色族跟主题 */
    background: linear-gradient(90deg, transparent, var(--color-primary) 20%, var(--color-primary-active) 80%, transparent);
    height: 3px;
    width: 80px;
    margin: 0 auto 18px;
}

.index-page .index-comparison-preview .section-subtitle {
    /* R14-M: was #555 gray, 改主题 secondary 文本 */
    color: var(--color-text-secondary);
    font-size: 17px;
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto;
}

.index-page .comparison-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    padding: 0 20px;
}

.index-page .intro-icon {
    width: 90px;
    height: 90px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent-purple);
    border-radius: 50%;
    box-shadow: var(--shadow-glow-primary);
    transition: transform 0.3s ease;
}

.index-page .intro-icon:hover {
    transform: scale(1.05);
}

.index-page .intro-icon svg {
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
}

.index-page .comparison-intro h3 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 16px;
    /* R14-M: was #2c3e50 slate-dark, 改主题正文色 */
    color: var(--color-text);
    line-height: 1.4;
}

.index-page .comparison-intro p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-muted);              /* R14-C5: was #666 (Δ +53 manhattan, cold-shift) */
}

.index-page .quick-comparison-cards {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 60px;
    padding: 0 20px;
}

.index-page .comparison-card {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    /* R14-M: was #e8ecef, 改主题 border */
    border: 2px solid var(--color-border);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    height: 100%;
}

.index-page .comparison-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    /* R14-M: was #3498db 蓝, 改主色 */
    border-color: var(--color-primary);
}

.index-page .card-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--gradient-accent-pink);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    padding: 8px 16px;
    border-radius: var(--radius-chip);
    font-size: 13px;
    font-weight: 600;
    z-index: 2;
    box-shadow: var(--shadow-glow-accent);
    display: flex;
    align-items: center;
    gap: 5px;
}

.index-page .card-badge svg {
    width: 14px;
    height: 14px;
}

.index-page .card-badge-pro {
    background: var(--gradient-accent-cyan);
    box-shadow: var(--shadow-glow-primary);
}

.index-page .card-image {
    /* R14-M: was #f8f9fa → #e9ecef 灰阶渐变, 改主题背景二级色 */
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
    padding: 50px 30px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.index-page .card-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* R14-M: was rgba(52,152,219) 蓝色 radial, 改主色 rgb */
    background: radial-gradient(circle at center, rgba(var(--color-primary-rgb), 0.05) 0%, transparent 70%);
}

.index-page .card-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.4s ease;
    position: relative;
    z-index: 1;
}

.index-page .comparison-card:hover .card-image img {
    transform: scale(1.12) rotate(3deg);
}

.index-page .card-content {
    padding: 28px;
}

.index-page .card-content h4 {
    font-size: 22px;
    font-weight: 700;
    /* R14-M: was #2c3e50 slate-dark, 改主题正文色 */
    color: var(--color-text);
    margin-bottom: 16px;
    line-height: 1.3;
}

.index-page .card-price {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.index-page .price-current {
    font-size: 32px;
    font-weight: 800;
    color: #e74c3c;                      /* 红: 价格 semantic */
    line-height: 1;
}

.index-page .price-original {
    font-size: 18px;
    /* R14-M: was #95a5a6 gray, 改主题 muted 文本色 */
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.index-page .card-highlights {
    list-style: none;
    padding: 0;
    margin: 0;
}

.index-page .card-highlights li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 15px;
    /* R14-M: was #444 / #f0f0f0, 改主题正文 + 浅边框 */
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-light);
    line-height: 1.5;
}

.index-page .card-highlights li:last-child {
    border-bottom: none;
}

.index-page .card-highlights svg {
    color: #27ae60;
    flex-shrink: 0;
}

.index-page .card-highlights span {
    flex: 1;
}

.index-page .comparison-vs {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.index-page .comparison-vs span {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent-purple);
    border-radius: 50%;
    font-size: 22px;
    font-weight: 900;
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    box-shadow: var(--shadow-glow-primary);
    border: 4px solid #ffffff;
}

.index-page .key-differences {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    /* R14-M: was #e8ecef, 改主题 border */
    border: 2px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 40px;
    margin-bottom: 50px;
    box-shadow: var(--shadow-card);
}

.index-page .key-differences h4 {
    font-size: 24px;
    font-weight: 700;
    /* R14-M: was #2c3e50 slate-dark, 改主题正文色 */
    color: var(--color-text);
    margin-bottom: 30px;
    text-align: center;
}

.index-page .differences-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.index-page .differences-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 500px;
}

.index-page .diff-row {
    border-bottom: 1px solid var(--color-border);
}

.index-page .diff-row:last-child {
    border-bottom: none;
}

.index-page .diff-header {
    background: var(--gradient-accent-purple);
}

.index-page .diff-header .diff-cell {
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    font-weight: 700;
    padding: 16px;
    font-size: 15px;
}

.index-page .diff-cell {
    padding: 16px;
    font-size: 15px;
    /* R14-M: was #444 gray, 改主题正文 */
    color: var(--color-text);
    text-align: left;
    vertical-align: middle;
    line-height: 1.5;
}

.index-page .diff-cell:first-child {
    font-weight: 600;
    /* R14-M: was #2c3e50 slate-dark, 改主题正文色 */
    color: var(--color-text);
    width: 25%;
}

.index-page .diff-cell.highlight {
    /* R14-M: was #3498db 蓝, 改主色 */
    color: var(--color-primary);
    font-weight: 600;
    position: relative;
}

.index-page .diff-cell.highlight svg {
    color: #f39c12;
    margin-right: 6px;
    vertical-align: middle;
}

.index-page .comparison-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
    padding: 0 20px;
}

.index-page .feature-item {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    /* R14-M: was #e8ecef, 改主题 border */
    border: 2px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-xs);
}

.index-page .feature-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    /* R14-M: was #3498db 蓝, 改主色 */
    border-color: var(--color-primary);
}

.index-page .feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent-purple);
    border-radius: 50%;
    box-shadow: var(--shadow-glow-primary);
}

.index-page .feature-icon svg {
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
}

.index-page .feature-item h5 {
    font-size: 19px;
    font-weight: 700;
    /* R14-M: was #2c3e50 slate-dark, 改主题正文色 */
    color: var(--color-text);
    margin-bottom: 10px;
    line-height: 1.3;
}

.index-page .feature-item p {
    font-size: 15px;
    color: var(--color-text-muted);              /* R14-C5: was #666 (Δ +53 manhattan, cold-shift) */
    margin: 0;
    line-height: 1.5;
}

.index-page .index-comparison-preview .section-footer {
    text-align: center;
    padding: 0 20px;
}

.index-page .index-comparison-preview .btn-primary {
    background: var(--gradient-accent-purple);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border: none;
    font-size: 18px;
    padding: 18px 45px;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-primary);
    transition: all 0.3s ease;
    font-weight: 700;
}

.index-page .index-comparison-preview .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary-lg);
}

.index-page .index-comparison-preview .btn-primary svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
}

.index-page .comparison-note {
    margin-top: 18px;
    font-size: 14px;
    color: var(--color-text-muted); /* R14-Q: was #888 */
    line-height: 1.6;
}

.index-page .index-tutorials {
    background-color: var(--ip-bg-light);
}

.index-page .tutorials-wrapper {
    position: relative;
}

.index-page .tutorials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.index-page .tutorial-card {
    background-color: var(--ip-bg-white);
    border-radius: var(--ip-radius-md);
    padding: 30px;
    position: relative;
    transition: var(--ip-transition);
    box-shadow: var(--ip-shadow-sm);
    display: flex;
    flex-direction: column;
}

.index-page .tutorial-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--ip-shadow-md);
}

.index-page .tutorial-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--ip-accent-color);
    color: var(--ip-bg-white);
    padding: 4px 12px;
    border-radius: var(--ip-radius-sm);
    font-size: 12px;
    font-weight: 600;
}

.index-page .tutorial-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--ip-secondary-color), var(--ip-accent-color));
    border-radius: 50%;
    margin-bottom: 20px;
}

.index-page .tutorial-icon i {
    font-size: 24px;
    color: var(--ip-bg-white);
}

.index-page .tutorial-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.index-page .tutorial-title a {
    color: var(--ip-primary-color);
    text-decoration: none;
    transition: var(--ip-transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.index-page .tutorial-title a:hover {
    color: var(--ip-secondary-color);
}

.index-page .tutorial-desc {
    font-size: 14px;
    color: var(--ip-text-light);
    margin-bottom: 15px;
    flex-grow: 1;
    line-height: 1.6;
}

.index-page .tutorial-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--ip-border-color);
}

.index-page .tutorial-meta time {
    font-size: 13px;
    color: var(--ip-text-lighter);
}

.index-page .tutorial-link {
    color: var(--ip-secondary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--ip-transition);
}

.index-page .tutorial-link:hover {
    color: var(--ip-primary-color);
}

.index-page .index-advantages {
    background-color: var(--ip-bg-white);
}

.index-page .advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.index-page .advantage-card {
    text-align: center;
    padding: 35px 25px;
    background-color: var(--ip-bg-light);
    border-radius: var(--ip-radius-md);
    transition: var(--ip-transition);
}

.index-page .advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--ip-shadow-md);
    background-color: var(--ip-bg-white);
}

.index-page .advantage-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--ip-secondary-color), var(--ip-accent-color));
    border-radius: 50%;
    transition: var(--ip-transition);
}

.index-page .advantage-card:hover .advantage-icon {
    transform: scale(1.1) rotate(5deg);
}

.index-page .advantage-icon i {
    font-size: 32px;
    color: var(--ip-bg-white);
}

.index-page .advantage-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--ip-primary-color);
}

.index-page .advantage-desc {
    font-size: 14px;
    color: var(--ip-text-light);
    line-height: 1.6;
}

.index-page .index-news {
    background-color: var(--ip-bg-light);
}

.index-page .news-wrapper {
    position: relative;
}

.index-page .news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.index-page .news-card {
    background-color: var(--ip-bg-white);
    border-radius: var(--ip-radius-md);
    overflow: hidden;
    box-shadow: var(--ip-shadow-sm);
    transition: var(--ip-transition);
    display: flex;
    flex-direction: column;
}

.index-page .news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--ip-shadow-lg);
}

.index-page .news-image {
    position: relative;
    overflow: hidden;
    height: 200px;
    background-color: var(--ip-bg-light);
}

.index-page .news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--ip-transition);
}

.index-page .news-card:hover .news-image img {
    transform: scale(1.1);
}

.index-page .news-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background-color: var(--ip-accent-color);
    color: var(--ip-bg-white);
    padding: 4px 12px;
    border-radius: var(--ip-radius-sm);
    font-size: 12px;
    font-weight: 600;
    z-index: 1;
}

.index-page .badge-headline {
    background-color: var(--color-primary-active);
}

.index-page .news-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.index-page .news-title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 10px;
}

.index-page .news-title a {
    color: var(--ip-primary-color);
    text-decoration: none;
    transition: var(--ip-transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.index-page .news-title a:hover {
    color: var(--ip-secondary-color);
}

.index-page .news-excerpt {
    font-size: 14px;
    color: var(--ip-text-light);
    margin-bottom: 15px;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.index-page .news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--ip-border-color);
}

.index-page .news-meta time {
    font-size: 13px;
    color: var(--ip-text-lighter);
}

.index-page .news-link {
    color: var(--ip-secondary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--ip-transition);
}

.index-page .news-link:hover {
    color: var(--ip-primary-color);
}

.index-page .index-faq {
    background-color: var(--ip-bg-white);
}

.index-page .faq-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.index-page .faq-list {
    margin-bottom: 40px;
}

.index-page .index-faq-item {
    background-color: var(--ip-bg-light);
    border-radius: var(--ip-radius-md);
    margin-bottom: 15px;
    overflow: hidden;
    transition: var(--ip-transition);
}

.index-page .index-faq-item:hover {
    box-shadow: var(--ip-shadow-sm);
}

.index-page .index-faq-question {
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--ip-transition);
    user-select: none;
}

.index-page .index-faq-question:hover {
    background-color: var(--color-bg-quaternary);     /* R14-D3: was #e8eaed (Δ 11) */
}

.index-page .index-faq-question h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--ip-primary-color);
    margin: 0;
    flex: 1;
    padding-right: 15px;
}

.index-page .index-faq-question i {
    font-size: 18px;
    color: var(--ip-secondary-color);
    transition: var(--ip-transition);
    flex-shrink: 0;
}

.index-page .index-faq-item.active .index-faq-question i {
    transform: rotate(45deg);
}

.index-page .index-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.index-page .index-faq-item.active .index-faq-answer {
    max-height: 600px;
}

.index-page .faq-answer-content {
    padding: 0 25px 20px;
}

.index-page .faq-answer-content p {
    font-size: 15px;
    color: var(--ip-text-light);
    line-height: 1.7;
    margin-bottom: 15px;
}

.index-page .faq-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--ip-secondary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--ip-transition);
}

.index-page .faq-link:hover {
    color: var(--ip-primary-color);
}

.index-page .index-certification {
    background-color: var(--ip-bg-light);
}

.index-page .certification-box {
    background-color: var(--ip-bg-white);
    border-radius: var(--ip-radius-lg);
    padding: 50px;
    box-shadow: var(--ip-shadow-md);
}

.index-page .certification-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--ip-primary-color);
    margin-bottom: 30px;
    text-align: center;
}

.index-page .certification-info {
    margin-bottom: 40px;
}

.index-page .info-item {
    margin-bottom: 30px;
}

.index-page .info-item:last-child {
    margin-bottom: 0;
}

.index-page .info-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ip-primary-color);
    margin-bottom: 12px;
}

.index-page .info-item p {
    font-size: 15px;
    color: var(--ip-text-color);
    line-height: 1.7;
    margin-bottom: 8px;
}

.index-page .certification-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.index-page .stat-item {
    background-color: var(--ip-bg-light);
    padding: 25px 15px;
    border-radius: var(--ip-radius-md);
    text-align: center;
    transition: var(--ip-transition);
}

.index-page .stat-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--ip-shadow-sm);
    background-color: var(--ip-bg-white);
}

.index-page .stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--ip-secondary-color);
    margin-bottom: 8px;
    line-height: 1.2;
    white-space: nowrap;
}

.index-page .stat-plus,
.index-page .stat-percent {
    font-size: 24px;
}

.index-page .stat-label {
    font-size: 14px;
    color: var(--ip-text-light);
}

.index-page .index-contact {
    background-color: var(--ip-bg-white);
}

.index-page .contact-box {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--ip-bg-light);
    border-radius: var(--ip-radius-lg);
    padding: 40px;
}

.index-page .contact-info-group {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.index-page .contact-item {
    display: flex;
    align-items: flex-start;
    padding: 20px;
    background-color: var(--ip-bg-white);
    border-radius: var(--ip-radius-md);
    transition: var(--ip-transition);
}

.index-page .contact-item:hover {
    box-shadow: var(--ip-shadow-sm);
}

.index-page .contact-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--ip-secondary-color), var(--ip-accent-color));
    border-radius: 50%;
    margin-right: 20px;
    flex-shrink: 0;
}

.index-page .contact-icon i {
    font-size: 24px;
    color: var(--ip-bg-white);
}

.index-page .contact-text {
    flex: 1;
    min-width: 0;
}

.index-page .contact-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--ip-primary-color);
    margin-bottom: 5px;
}

.index-page .contact-text p {
    font-size: 15px;
    color: var(--ip-text-color);
    line-height: 1.5;
    word-break: break-all;
}

.index-page .contact-action {
    text-align: center;
}

.index-page .contact-note {
    font-size: 14px;
    color: var(--ip-text-light);
    margin-top: 15px;
}

@media (max-width: 1200px) {
    .index-page .index-comparison-preview {
        padding: 60px 0;
    }
    
    .index-page .quick-comparison-cards {
        gap: 30px;
    }
    
    .index-page .card-image {
        height: 260px;
        padding: 40px 25px;
    }
}

@media (max-width: 1024px) {
    .index-page .quick-nav-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .index-page .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .index-page .tutorials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .index-page .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .index-page .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .index-page .certification-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .index-page .index-comparison-preview .section-title {
        font-size: 32px;
    }
    
    .index-page .comparison-intro h3 {
        font-size: 24px;
    }
    
    .index-page .quick-comparison-cards {
        gap: 25px;
    }
    
    .index-page .card-image {
        height: 240px;
        padding: 35px 20px;
    }
    
    .index-page .card-content {
        padding: 24px;
    }
    
    .index-page .card-content h4 {
        font-size: 20px;
    }
    
    .index-page .price-current {
        font-size: 28px;
    }
    
    .index-page .key-differences {
        padding: 30px 25px;
    }
    
    .index-page .comparison-features {
        gap: 25px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .index-page .quick-comparison-cards {
        grid-template-columns: 1fr auto 1fr;
    }
    
    .index-page .comparison-vs {
        transform: none;
    }
}

@media (max-width: 768px) {
    .index-page section {
        padding: 40px 0;
    }
    
    .index-page .container {
        padding: 0 15px;
    }
    
    .index-page .section-title {
        font-size: 26px;
    }
    
    .index-page .section-subtitle {
        font-size: 15px;
    }
    
    .index-page .section-header {
        margin-bottom: 35px;
    }
    
    .index-page .quick-nav-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    
    .index-page .quick-nav-item {
        padding: 15px 8px;
    }
    
    .index-page .nav-icon {
        width: 40px;
        height: 40px;
    }
    
    .index-page .nav-icon i {
        font-size: 20px;
    }
    
    .index-page .nav-text {
        font-size: 13px;
    }
    
    .index-page .about-text {
        font-size: 15px;
    }
    
    .index-page .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .index-page .product-image {
        height: 240px;
        padding: 15px;
    }
    
    .index-page .product-info {
        padding: 15px;
    }
    
    .index-page .tutorials-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .index-page .tutorial-card {
        padding: 25px;
    }
    
    .index-page .advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .index-page .advantage-card {
        padding: 25px 20px;
    }
    
    .index-page .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .index-page .news-image {
        height: 180px;
    }
    
    .index-page .index-faq-question {
        padding: 18px 20px;
    }
    
    .index-page .index-faq-question h3 {
        font-size: 16px;
    }
    
    .index-page .faq-answer-content {
        padding: 0 20px 18px;
    }
    
    .index-page .certification-box {
        padding: 25px 15px;
        border-radius: var(--ip-radius-md);
    }
    
    .index-page .certification-title {
        font-size: 22px;
        margin-bottom: 25px;
    }
    
    .index-page .certification-info {
        margin-bottom: 30px;
    }
    
    .index-page .info-item {
        margin-bottom: 25px;
    }
    
    .index-page .info-item h3 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .index-page .info-item p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .index-page .certification-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .index-page .stat-item {
        padding: 20px 10px;
    }
    
    .index-page .stat-value {
        font-size: 26px;
    }
    
    .index-page .stat-plus,
    .index-page .stat-percent {
        font-size: 20px;
    }
    
    .index-page .stat-label {
        font-size: 13px;
    }
    
    .index-page .contact-box {
        padding: 25px 15px;
    }
    
    .index-page .contact-item {
        padding: 15px;
    }
    
    .index-page .contact-icon {
        width: 45px;
        height: 45px;
        margin-right: 15px;
    }
    
    .index-page .contact-icon i {
        font-size: 20px;
    }
    
    .index-page .contact-text h4 {
        font-size: 15px;
    }
    
    .index-page .contact-text p {
        font-size: 14px;
    }
    
    .index-page .btn-lg {
        padding: 12px 28px;
        font-size: 15px;
    }
    
    .index-page .index-comparison-preview {
        padding: 50px 0;
    }
    
    .index-page .index-comparison-preview .section-title {
        font-size: 28px;
        padding: 0 15px;
    }
    
    .index-page .index-comparison-preview .section-subtitle {
        font-size: 16px;
        padding: 0 15px;
    }
    
    .index-page .comparison-intro {
        margin-bottom: 40px;
        padding: 0 15px;
    }
    
    .index-page .intro-icon {
        width: 75px;
        height: 75px;
        margin-bottom: 20px;
    }
    
    .index-page .intro-icon svg {
        width: 40px;
        height: 40px;
    }
    
    .index-page .comparison-intro h3 {
        font-size: 22px;
        margin-bottom: 14px;
    }
    
    .index-page .comparison-intro p {
        font-size: 15px;
    }
    
    .index-page .quick-comparison-cards {
        grid-template-columns: 1fr;
        gap: 25px;
        padding: 0 15px;
    }
    
    .index-page .comparison-vs {
        order: 2;
        transform: rotate(90deg);
        margin: -5px 0;
    }
    
    .index-page .comparison-card {
        max-width: 100%;
    }
    
    .index-page .comparison-card:first-child {
        order: 1;
    }
    
    .index-page .comparison-card:last-child {
        order: 3;
    }
    
    .index-page .card-badge {
        top: 12px;
        right: 12px;
        padding: 6px 14px;
        font-size: 12px;
    }
    
    .index-page .card-image {
        height: 220px;
        padding: 30px 20px;
    }
    
    .index-page .card-content {
        padding: 22px 20px;
    }
    
    .index-page .card-content h4 {
        font-size: 19px;
        margin-bottom: 14px;
    }
    
    .index-page .card-price {
        margin-bottom: 20px;
    }
    
    .index-page .price-current {
        font-size: 26px;
    }
    
    .index-page .price-original {
        font-size: 16px;
    }
    
    .index-page .card-highlights li {
        padding: 10px 0;
        font-size: 14px;
    }
    
    .index-page .key-differences {
        padding: 25px 15px;
        margin: 0 15px 40px;
    }
    
    .index-page .key-differences h4 {
        font-size: 20px;
        margin-bottom: 20px;
    }
    
    .index-page .differences-table-wrapper {
        margin: 0 -15px;
        padding: 0 15px;
    }
    
    .index-page .diff-header {
        display: none;
    }
    
    .index-page .diff-row {
        display: grid;
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 16px 0;
        border-bottom: 2px solid var(--color-border);
    }
    
    .index-page .diff-cell {
        padding: 8px 0;
        display: flex;
        align-items: center;
        gap: 8px;
        width: 100%;
        font-size: 14px;
    }
    
    .index-page .diff-cell:first-child {
        font-size: 16px;
        font-weight: 700;
        /* R14-M: was #2c3e50 slate-dark, 改主题正文色 */
    color: var(--color-text);
        padding-bottom: 6px;
        width: 100%;
    }
    
    .index-page .diff-cell:not(:first-child)::before {
        content: attr(data-label) ': ';
        font-weight: 600;
        color: var(--color-text-secondary); /* R14-Q: was #555 */
        min-width: 100px;
        display: inline-block;
    }
    
    .index-page .comparison-features {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px;
        margin-bottom: 40px;
    }
    
    .index-page .feature-item {
        padding: 28px 20px;
    }
    
    .index-page .feature-icon {
        width: 65px;
        height: 65px;
        margin-bottom: 16px;
    }
    
    .index-page .feature-icon svg {
        width: 28px;
        height: 28px;
    }
    
    .index-page .feature-item h5 {
        font-size: 18px;
        margin-bottom: 8px;
    }
    
    .index-page .feature-item p {
        font-size: 14px;
    }
    
    .index-page .index-comparison-preview .section-footer {
        padding: 0 15px;
    }
    
    .index-page .index-comparison-preview .btn-primary {
        font-size: 16px;
        padding: 16px 35px;
        width: 100%;
        max-width: 400px;
        justify-content: center;
    }
    
    .index-page .comparison-note {
        font-size: 13px;
        margin-top: 14px;
        padding: 0 10px;
    }
}

@media (max-width: 480px) {
    .index-page .section-title {
        font-size: 22px;
    }
    
    .index-page .quick-nav-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .index-page .products-grid {
        grid-template-columns: 1fr;
    }
    
    .index-page .certification-box {
        padding: 20px 12px;
    }
    
    .index-page .certification-title {
        font-size: 20px;
    }
    
    .index-page .info-item h3 {
        font-size: 17px;
    }
    
    .index-page .certification-stats {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .index-page .stat-item {
        padding: 18px 15px;
    }
    
    .index-page .stat-value {
        font-size: 24px;
    }
    
    .index-page .stat-plus,
    .index-page .stat-percent {
        font-size: 18px;
    }
    
    .index-page .index-comparison-preview {
        padding: 40px 0;
    }
    
    .index-page .index-comparison-preview .section-title {
        font-size: 24px;
        line-height: 1.4;
    }
    
    .index-page .index-comparison-preview .section-subtitle {
        font-size: 15px;
    }
    
    .index-page .intro-icon {
        width: 65px;
        height: 65px;
    }
    
    .index-page .intro-icon svg {
        width: 36px;
        height: 36px;
    }
    
    .index-page .comparison-intro h3 {
        font-size: 20px;
    }
    
    .index-page .comparison-intro p {
        font-size: 14px;
    }
    
    .index-page .card-image {
        height: 200px;
        padding: 25px 15px;
    }
    
    .index-page .card-content {
        padding: 18px 16px;
    }
    
    .index-page .card-content h4 {
        font-size: 18px;
    }
    
    .index-page .price-current {
        font-size: 24px;
    }
    
    .index-page .price-original {
        font-size: 15px;
    }
    
    .index-page .card-highlights li {
        font-size: 13px;
        padding: 9px 0;
    }
    
    .index-page .card-highlights svg {
        width: 14px;
        height: 14px;
    }
    
    .index-page .comparison-vs span {
        width: 60px;
        height: 60px;
        font-size: 20px;
    }
    
    .index-page .key-differences {
        padding: 20px 12px;
    }
    
    .index-page .key-differences h4 {
        font-size: 18px;
    }
    
    .index-page .diff-cell {
        font-size: 13px;
    }
    
    .index-page .diff-cell:first-child {
        font-size: 15px;
    }
    
    .index-page .feature-item {
        padding: 24px 18px;
    }
    
    .index-page .feature-icon {
        width: 60px;
        height: 60px;
    }
    
    .index-page .feature-icon svg {
        width: 26px;
        height: 26px;
    }
    
    .index-page .feature-item h5 {
        font-size: 17px;
    }
    
    .index-page .feature-item p {
        font-size: 13px;
    }
    
    .index-page .index-comparison-preview .btn-primary {
        font-size: 15px;
        padding: 15px 30px;
    }
    
    .index-page .index-comparison-preview .btn-primary svg {
        width: 16px;
        height: 16px;
    }
    
    .index-page .comparison-note {
        font-size: 12px;
    }
}

@media (max-width: 360px) {
    .index-page .index-comparison-preview .section-title {
        font-size: 22px;
    }
    
    .index-page .card-content h4 {
        font-size: 17px;
    }
    
    .index-page .price-current {
        font-size: 22px;
    }
    
    .index-page .card-highlights li {
        font-size: 12px;
    }
    
    .index-page .diff-cell {
        font-size: 12px;
    }
    
    .index-page .diff-cell:first-child {
        font-size: 14px;
    }
}

@media print {
    .index-page .index-comparison-preview {
        page-break-inside: avoid;
    }
    
    .index-page .comparison-card {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .index-page .btn-primary {
        display: none;
    }
}
/* ========================================
   通用底部Footer主体样式开始
======================================== */
.site-footer {
    /* R14-R: 原硬编码 #1a1a1a → #0d0d0d (zinc blackish), 主题切换完全不动.
       改用 theme-aware token; 与 color-override-system-v2_1.css 的
       --gradient-dark-vertical 方向一致 (都用 --color-footer-bg + --color-bg-darker). */
    background: linear-gradient(180deg, var(--color-footer-bg) 0%, var(--color-bg-darker) 100%);
    color: var(--color-footer-text);              /* R14-R: was --color-text-inverse, 深主题会黑叠黑 */
    padding-top: 50px;
    padding-bottom: 10px;
    margin-top: 80px;
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-fade-brand);
}

/* ========================================
   通用友情链接区域
======================================== */
.footer-links-section {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-card);
    padding: 18px 24px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.footer-links-section .links-title {
    font-size: 13px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.6);
    margin-right: 20px;
    white-space: nowrap;
    position: relative;
    padding-left: 18px;
}

.footer-links-section .links-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background: var(--gradient-brand);
    border-radius: 3px;
}

.footer-links-section .links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 0;
    flex: 1;
}

.footer-links-section .link-item {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    font-size: 13px;
    padding: 6px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
    background: transparent;
}

.footer-links-section .link-item::after {
    content: '|';
    position: absolute;
    right: 0;
    color: rgba(255, 255, 255, 0.15);
}

.footer-links-section .link-item:last-child::after {
    display: none;
}

.footer-links-section .link-item:hover {
    color: #00cc88;
    background: rgba(0, 204, 136, 0.08);
    transform: translateY(-2px);
}

.footer-links-section .link-item:focus {
    outline: none;
    box-shadow: none;
}

/* ========================================
   通用底部Footer主内容区
======================================== */
.footer-main {
    padding: 40px 0 35px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-nav-col {
    margin-bottom: 30px;
}

.footer-section-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-footer-text);              /* R14-R: was --color-text-inverse, 深主题会黑叠黑 */
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-primary);
    position: relative;
    display: block;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section-title:hover {
    color: #00cc88;
}

.footer-section-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gradient-shimmer-brand);
}

.footer-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-nav-list li {
    margin-bottom: 12px;
}

.footer-nav-list a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    padding-left: 12px;
}

.footer-nav-list a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.footer-nav-list a:hover {
    color: var(--color-footer-text);              /* R14-R: was --color-text-inverse, 深主题会黑叠黑 */
    padding-left: 16px;
}

.footer-nav-list a:hover::before {
    background: #00cc88;
    width: 6px;
    height: 6px;
}

.footer-contact-container {
    position: sticky;
    top: 20px;
}

/* Footer secondary nav (topic aggregation / legal / what-is-Ledger) */
/* Moved to css/custom.css as .footer-secondary-nav - aoyun.css keeps only base styles */

.footer-widget-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-footer-text);              /* R14-R: was --color-text-inverse, 深主题会黑叠黑 */
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
    position: relative;
}

.footer-widget-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--gradient-shimmer-brand);
}

.footer-contact {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 18px;
}

.footer-contact i {
    width: 36px;
    height: 36px;
    background: rgba(var(--color-primary-rgb), 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-right: 12px;
}

.contact-text {
    flex: 1;
}

.contact-label {
    display: block;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 4px;
}

.contact-text a,
.contact-text span {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.contact-text a:hover {
    color: #00cc88;
}

.footer-wechat {
    margin-top: 20px;
}

.footer-wechat .wechat-trigger-btn {
    width: 100%;
    padding: 10px 18px;
    background: var(--gradient-success-wechat);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.footer-wechat .wechat-trigger-btn:hover {
    background: var(--gradient-success-wechat-reverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-accent);
}

.footer-wechat .wechat-trigger-btn i {
    font-size: 16px;
}

/* ========================================
   版权信息区域
======================================== */
.footer-copyright {
    padding: 28px 0 22px;
}

.copyright-brand {
    text-align: center;
    margin-bottom: 18px;
}

.brand-text {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

.brand-text i {
    margin-right: 6px;
    color: #00cc88;
}

.copyright-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 18px;
    font-size: 12px;
}

.copyright-links a,
.copyright-links span {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: color 0.3s ease;
}

.copyright-links a:hover {
    color: #00cc88;
}

.copyright-links .divider {
    color: rgba(255, 255, 255, 0.25);
}

/* ========================================
   返回顶部按钮
======================================== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-brand);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: var(--shadow-primary);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-primary-lg);
}

/* ========================================
   通用移动端底部导航
======================================== */
.mobile-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    box-shadow: var(--shadow-mobile-bar);
    display: none;
    z-index: 1000;
    justify-content: space-around;
    padding: 8px 0 calc(8px + env(safe-area-inset-bottom));
}

.mobile-nav-item {
    flex: 1;
    display: flex;
    justify-content: center;
}

.mobile-nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    background: transparent;
    border: none;
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 60px;
}

.mobile-nav-btn i {
    font-size: 22px;
    margin-bottom: 4px;
    transition: all 0.3s ease;
}

.mobile-nav-btn span {
    font-size: 11px;
    line-height: 1.2;
}

.mobile-nav-btn:hover,
.mobile-nav-btn:active {
    color: var(--color-primary);
}

.mobile-nav-btn:hover i,
.mobile-nav-btn:active i {
    transform: scale(1.15);
}

/* ========================================
   微信公众号弹窗
======================================== */
.wechat-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: none;
}

.wechat-modal.active {
    display: block;
}

.wechat-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.wechat-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border-radius: var(--radius-modal);
    box-shadow: var(--shadow-popup);
    max-width: 400px;
    width: 90%;
    animation: slideUp 0.3s ease;
}

.wechat-modal-close {
    position: absolute;
    top: -15px;
    right: -15px;
    width: 40px;
    height: 40px;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border: none;
    border-radius: 50%;
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    font-size: 20px;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    z-index: 1;
}

.wechat-modal-close:hover {
    background: #ff4444;
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    transform: rotate(90deg);
}

.wechat-modal-body {
    padding: 40px 30px 30px;
}

.wechat-qr-wrapper {
    text-align: center;
    margin-bottom: 25px;
}

.wechat-qr-image {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-image);
    box-shadow: var(--shadow-card);
    margin-bottom: 15px;
}

.wechat-qr-tip {
    font-size: 12px;
    color: var(--color-text-placeholder);      /* R14-C5: was #999999 (Δ +46 manhattan, cold-shift) */
}

.wechat-info {
    text-align: center;
}

.wechat-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    margin-bottom: 15px;
}

.wechat-name-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 15px 20px;
    background: var(--color-bg-secondary);            /* R14-D3: was #f5f5f5 (Δ 15, cold-shift) */
    border-radius: 8px;
    margin-bottom: 15px;
}

.wechat-name {
    font-size: 16px;
    font-weight: 600;
    color: #07c160;
}

.wechat-copy-btn {
    padding: 6px 15px;
    background: var(--gradient-brand);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border: none;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
}

.wechat-copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.wechat-desc {
    font-size: 13px;
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    line-height: 1.6;
}

/* ========================================
   PC端浮动联系按钮
======================================== */
.float-contact-pc {
    position: fixed;
    right: 30px;
    bottom: 170px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 998;
}

.float-contact-pc .float-btn {
    width: 56px;
    height: 56px;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: var(--shadow-float);
    transition: all 0.3s ease;
    position: relative;
}

.float-contact-pc .float-text {
    font-size: 11px;
    margin-top: 2px;
}

.float-contact-pc .float-phone {
    background: var(--gradient-brand);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
}

.float-contact-pc .float-chat {
    background: var(--gradient-accent-orange);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
}

.float-contact-pc .float-wechat {
    background: var(--gradient-success-wechat);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
}

.float-contact-pc .float-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   动画
======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translate(-50%, -40%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

/* ========================================
   响应式设计
======================================== */
@media (max-width: 991px) {
    .float-contact-pc {
        display: none;
    }
    
    .back-to-top {
        display: none;
    }
    
    .footer-contact-container {
        position: static;
    }
}

@media (max-width: 768px) {
    .mobile-bottom-nav {
        display: flex;
    }
    
    .site-footer {
        padding-bottom: 80px;
        margin-top: 50px;
        padding-top: 35px;
    }
    
    .footer-links-section {
        padding: 15px 18px;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .footer-links-section .links-title {
        margin-bottom: 12px;
        margin-right: 0;
    }
    
    .footer-links-section .links-grid {
        gap: 8px 0;
        width: 100%;
    }
    
    .footer-links-section .link-item {
        font-size: 12px;
        padding: 5px 14px;
    }
    
    .footer-main {
        padding: 32px 0 28px;
    }
    
    .footer-nav-col {
        margin-bottom: 35px;
    }
    
    .copyright-brand {
        margin-bottom: 15px;
    }
    
    .brand-text {
        font-size: 12px;
    }
    
    .copyright-links {
        font-size: 11px;
        gap: 6px 12px;
    }
    
    .wechat-modal-content {
        width: 95%;
        max-width: 350px;
    }
    
    .wechat-modal-body {
        padding: 30px 20px 25px;
    }
    
    .wechat-qr-image {
        width: 180px;
        height: 180px;
    }
}

@media (max-width: 576px) {
    .site-footer {
        padding-top: 28px;
    }
    
    .footer-links-section {
        padding: 12px 15px;
    }
    
    .footer-links-section .links-title {
        font-size: 12px;
        padding-left: 16px;
    }
    
    .footer-links-section .links-title::before {
        width: 10px;
        height: 10px;
    }
    
    .footer-links-section .link-item {
        font-size: 11px;
        padding: 4px 12px;
    }
    
    .footer-section-title {
        font-size: 15px;
        margin-bottom: 15px;
    }
    
    .footer-nav-list a {
        font-size: 13px;
    }
    
    .copyright-links {
        font-size: 10px;
        gap: 5px 10px;
    }
    
    .mobile-nav-btn {
        padding: 6px 8px;
        min-width: 50px;
    }
    
    .mobile-nav-btn i {
        font-size: 20px;
    }
    
    .mobile-nav-btn span {
        font-size: 10px;
    }
}

/* ========================================
   通用头部大屏图样式
======================================== */
/* 头部大屏整体容器 */
.jumbotron.hero-banner {
  position: relative;
  overflow: hidden;
  margin-bottom: 16px;
  padding: 0;
  background-color: var(--color-bg-darker); /* R14-Q: was #000 */
  color: var(--color-text-inverse);              /* R14-C4: was #fff */
}

/* 有/无栏目图可以做一些细微差异（可选） */
.jumbotron.hero-banner.no-sort-pic {
  background-color: #050816;
}

/* picture 容器：铺满整个 jumbotron */
.hero-banner-picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* 背景图铺满裁剪 */
.hero-banner-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

/* 遮罩层，压暗背景图，让文字更清晰 */
.jumbotron.hero-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background: var(--gradient-overlay-dark);
}

/* 文本内容容器 */
.hero-banner-content {
  position: relative;
  z-index: 3;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 32px 16px;
}

/* 标题 */
.hero-banner-content .hero-title {
  margin: 0 0 8px;
  font-size: 24px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text-inverse);              /* R14-C4: was #fff */
}

/* 副标题 */
.hero-banner-content .hero-subtitle {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.86);
  max-width: 640px;
}

/* 适配 Bootstrap 的 .container 宽度 */
.hero-banner .container {
  position: relative;
}

/* PC 端加大高度和字号 */
@media (min-width: 768px) {
  .hero-banner-content {
    min-height: 280px;
    padding: 48px 32px;
  }

  .hero-banner-content .hero-title {
    font-size: 32px;
  }

  .hero-banner-content .hero-subtitle {
    font-size: 16px;
  }
}

@media (min-width: 1200px) {
  .hero-banner-content {
    min-height: 360px;
    padding: 64px 48px;
  }

  .hero-banner-content .hero-title {
    font-size: 38px;
  }

  .hero-banner-content .hero-subtitle {
    font-size: 18px;
  }
}
/* ========================================
   通用顶部轮播图样式
======================================== */
.index-banner {
    width: 100%;
    overflow: hidden;
    padding: 0;
    background-color: var(--color-bg-darker); /* R14-Q: was #000 */
}

.index-banner .container {
    max-width: 1920px;
    margin: 0 auto;
    padding: 0;
}

.banner-swiper {
    position: relative;
    width: 100%;
    height: 420px;
    overflow: hidden;
}

.banner-swiper-mobile {
    display: none;
}

.banner-item {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-darker); /* R14-Q: was #000 */
}

.banner-img-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-banner-overlay);
    z-index: 1;
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    width: 100%;
    padding: 0 40px;
    text-align: left;
}

.banner-title {
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 20px;
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    text-shadow: 0 4px 20px rgba(0, 10, 30, 0.8);
    letter-spacing: 0.5px;
}

.banner-subtitle {
    font-size: 1.125rem;
    font-weight: 400;
    line-height: 1.6;
    margin: 0 0 36px;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    max-width: 600px;
}

.banner-actions {
    display: flex;
}

.index-banner .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 36px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    background: var(--gradient-brand-ink);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: var(--shadow-primary);
}

.index-banner .btn-primary:hover {
    background: var(--gradient-brand-ink-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary-lg);
}

.index-banner .btn-primary i {
    transition: transform 0.35s ease;
    font-size: 0.9rem;
}

.index-banner .btn-primary:hover i {
    transform: translateX(6px);
}

.swiper-pagination {
    bottom: 20px !important;
    left: 0;
    width: 100%;
    text-align: center;
}

.swiper-pagination-bullet {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.3);
    opacity: 1;
    margin: 0 6px !important;
    transition: all 0.35s ease;
    border-radius: 50%;
    backdrop-filter: blur(2px);
}

.swiper-pagination-bullet-active {
    width: 32px;
    border-radius: 4px;
    background: var(--color-primary);                 /* R14-P: was var(--color-bg-primary) 白底, 激活 bullet 改为主题色 */
    box-shadow: var(--shadow-glow-primary);
}

@media (max-width: 1200px) {
    .banner-swiper {
        height: 360px;
    }
    .banner-content {
        padding: 0 30px;
    }
    .banner-title {
        font-size: 2.25rem;
        margin-bottom: 16px;
    }
    .banner-subtitle {
        font-size: 1.0625rem;
        margin-bottom: 28px;
    }
}

@media (max-width: 768px) {
    .banner-swiper-pc {
        display: none;
    }
    
    .banner-swiper-mobile {
        display: block;
    }
    
    .banner-swiper {
        height: 100vw;
        max-height: 600px;
        min-height: 400px;
    }
    
    .banner-swiper-mobile .banner-img {
        object-fit: cover;
    }
    
    .banner-content {
        padding: 0 20px;
        text-align: center;
    }
    
    .banner-overlay {
        background: var(--gradient-scrim-bottom);
    }

    .banner-actions {
        justify-content: center;
    }
    
    .banner-title {
        font-size: 1.875rem;
        margin-bottom: 14px;
    }
    
    .banner-subtitle {
        font-size: 1rem;
        margin: 0 auto 24px;
        max-width: 90%;
    }
    
    .btn-primary {
        padding: 12px 28px;
        font-size: 0.9375rem;
    }
    
    .swiper-pagination {
        bottom: 18px !important;
    }
}

@media (max-width: 576px) {
    .banner-swiper {
        height: 95vw;
        max-height: 500px;
        min-height: 380px;
    }
    
    .banner-content {
        padding: 0 15px;
    }
    
    .banner-title {
        font-size: 1.625rem;
        margin-bottom: 12px;
    }
    
    .banner-subtitle {
        font-size: 0.9375rem;
        margin-bottom: 20px;
    }
    
    .btn-primary {
        padding: 11px 26px;
        font-size: 0.875rem;
    }
    
    .swiper-pagination {
        bottom: 15px !important;
    }
}

@media (max-width: 480px) {
    .banner-swiper {
        height: 100vw;
        max-height: 480px;
        min-height: 360px;
    }
    
    .banner-title {
        font-size: 1.5rem;
    }
    
    .banner-subtitle {
        font-size: 0.875rem;
    }
}
/* ========================================
   通用面包屑样式
======================================== */
.site-breadcrumb {
padding: 14px 18px;
font-size: 16px;
line-height: 1.6;
background-color: var(--color-bg-secondary);     /* R14-D3: was #f8f9fa (Δ 3) */
border: 1px solid var(--color-border);           /* R14-N: was #dee2e6 Bootstrap 灰边 */
border-radius: 4px;
color: var(--color-text-secondary);              /* R14-N: was #6c757d Bootstrap 灰字 */
text-align: right;
}

.site-breadcrumb a {
color: var(--color-primary);                     /* R14-N: was #0d6efd Bootstrap 蓝 */
text-decoration: none;
transition: color 0.2s ease;
margin: 0 5px;
}

.site-breadcrumb a:hover {
color: var(--color-primary-hover);               /* R14-N: was #0a58ca Bootstrap 深蓝 hover */
text-decoration: underline;
}
/* ========================================
   通用分类导航样式
======================================== */
.category-nav-advanced {
    /* R14-N: 删除 --color-primary / --color-active-bg 本地硬码 (#007bff 蓝),
       改为让子元素自动继承 :root 主题变量 (var(--color-primary) 跟随 data-theme) */
    --color-secondary: var(--color-text-secondary);        /* R14-N: was #6c757d */
    --color-active-bg: var(--color-primary);               /* R14-N: was #007bff, 同步主色 */
    --color-active-text: var(--color-text-inverse);        /* R14-N: was #fff */

    --spacing-md: 10px;
    --spacing-sm: 6px;
    --border-radius: 25px;

    --shadow-base: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 10px rgba(0, 0, 0, 0.15);
    --shadow-active: 0 0 10px rgba(var(--color-primary-rgb), 0.6);  /* R14-N: was rgba(0,123,255) Bootstrap 蓝 */
    
    --transition-speed: 0.3s;
    
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-bg-secondary);     /* R14-D3: was #f8f9fa (Δ 3) */
    border-radius: 8px;
    box-shadow: var(--shadow-inner);
}

.category-nav-advanced .nav-item {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    cursor: pointer;
    
    padding: var(--spacing-sm) 18px;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    white-space: nowrap;
    
    color: var(--color-secondary);
    background-color: var(--color-bg-primary);      /* R14-D1: was #fff */
    border: 1px solid var(--color-border);          /* R14-N: was #dee2e6 Bootstrap 灰 */
    box-shadow: var(--shadow-base);
    
    transition: all var(--transition-speed) ease-in-out;
    transform: translateY(0);
}

.category-nav-advanced .nav-item:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.category-nav-advanced .nav-item.is-active {
    color: var(--color-active-text);
    background: var(--gradient-primary-theme);
    border-color: var(--color-primary-active);          /* R14-N: was #0056b3 Bootstrap 深蓝 */
    box-shadow: var(--shadow-active);
    font-weight: 600;
}

.category-nav-advanced .nav-item.is-active:hover {
    transform: translateY(0);
    box-shadow: var(--shadow-active);
}

.category-nav-advanced .badge-count {
    display: inline-block;
    padding: 2px 8px;
    margin-left: 8px;
    border-radius: var(--radius-chip);
    font-size: 13px;
    font-weight: 600;
    line-height: 1;
    
    color: var(--color-primary);
    background-color: var(--color-bg-quaternary);     /* R14-D3: was #e9ecef (Δ 17, boundary) */
    
    transition: background-color var(--transition-speed) ease;
}

.category-nav-advanced .nav-item.is-active .badge-count {
    color: var(--color-active-bg);
    background-color: var(--color-active-text);
}

@media (max-width: 768px) {
    .category-nav-advanced {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 12px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .category-nav-advanced::-webkit-scrollbar {
        display: none;
    }

    .category-nav-advanced .nav-item {
        padding: var(--spacing-sm) 14px;
        font-size: 14px;
        border-radius: var(--radius-chip);
        flex-shrink: 0;
    }

    .category-nav-advanced .badge-count {
        font-size: 12px;
    }
}
/* ========================================
   通用产品比较样式
======================================== */
.ledger-comparison-page {
  all: initial;
  display: block;
}

.ledger-comparison-page * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.ledger-comparison-page {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  line-height: 1.6;
  color: var(--color-text-secondary);          /* R14-C5: was #333 (Δ +39 manhattan, cold-shift) */
  background: var(--color-bg-secondary);            /* R14-D3: was #f8f9fa (Δ 3) */
}

.ledger-comparison-page .jumbotron {
  background: var(--gradient-accent-purple);
  padding: 80px 0;
  margin-bottom: 30px;
  text-align: center;
}

.ledger-comparison-page .container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 15px;
}

.ledger-comparison-page .text-light {
  color: var(--color-text-inverse);              /* R14-C4: was #fff */
}

.ledger-comparison-page .fs-18 {
  font-size: 18px;
  margin-top: 10px;
  opacity: 0.95;
}

.ledger-comparison-page .fs-26 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 0;
}

.ledger-comparison-page .comparison-header {
  background: var(--color-bg-primary);              /* R14-D1: was #fff */
  padding: 40px 20px;
  margin-bottom: 20px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  display: none;
}

.ledger-comparison-page .comparison-header h2 {
  font-size: 24px;
  margin-bottom: 30px;
  text-align: center;
  color: var(--color-text);                         /* R14-Q: was #000 */
  font-weight: 600;
}

.ledger-comparison-page .product-selectors {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.ledger-comparison-page .selector-wrapper {
  position: relative;
}

.ledger-comparison-page .product-select {
  width: 100%;
  padding: 15px 45px 15px 60px;
  font-size: 16px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  background: var(--color-bg-primary);              /* R14-D1: was #fff */
  cursor: pointer;
  appearance: none;
  transition: all 0.3s;
  background-image: url('data:image/svg+xml;charset=UTF-8,<svg width="12" height="8" viewBox="0 0 12 8" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M1 1L6 6L11 1" stroke="%23333" stroke-width="2" stroke-linecap="round"/></svg>');
  background-repeat: no-repeat;
  background-position: right 15px center;
}

.ledger-comparison-page .product-select:hover,
.ledger-comparison-page .product-select:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: var(--shadow-focus);
}

.ledger-comparison-page .selector-icon {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  pointer-events: none;
  color: var(--color-primary);
}

.ledger-comparison-page .selector-icon svg {
  width: 100%;
  height: 100%;
}

.ledger-comparison-page .comparison-wrapper {
  background: var(--color-bg-primary);              /* R14-D1: was #fff */
  padding: 40px 20px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  margin-bottom: 40px;
}

.ledger-comparison-page .comparison-product-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 15px;
  margin-bottom: 50px;
  padding-bottom: 40px;
  border-bottom: 2px solid #e9ecef;
}

.ledger-comparison-page .product-card-enhanced {
  border: 2px solid #e0e0e0;
  border-radius: var(--radius-card);
  padding: 15px;
  text-align: center;
  transition: all 0.3s;
  position: relative;
  background: var(--color-bg-primary);              /* R14-D1: was #fff */
  display: flex;
  flex-direction: column;
}

.ledger-comparison-page .product-card-enhanced:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.ledger-comparison-page .product-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--gradient-accent-purple);
  color: var(--color-text-inverse);              /* R14-C4: was #fff */
  padding: 4px 12px;
  border-radius: var(--radius-chip);
  font-size: 11px;
  font-weight: 600;
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.ledger-comparison-page .product-sale-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #ff6b35;
  color: var(--color-text-inverse);              /* R14-C4: was #fff */
  padding: 4px 12px;
  border-radius: var(--radius-chip);
  font-size: 11px;
  font-weight: 600;
  z-index: 10;
  box-shadow: var(--shadow-sm);
}

.ledger-comparison-page .product-image-wrapper {
  width: 100%;
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 15px;
  background: var(--color-bg-secondary);            /* R14-D3: was #f8f9fa (Δ 3) */
  border-radius: 8px;
  padding: 10px;
}

.ledger-comparison-page .product-image-wrapper img {
  max-width: 80%;
  max-height: 120px;
  object-fit: contain;
}

.ledger-comparison-page .product-info {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.ledger-comparison-page .product-card-enhanced h3 {
  font-size: 15px;
  margin-bottom: 10px;
  color: var(--color-text);                         /* R14-Q: was #000 */
  font-weight: 600;
  line-height: 1.3;
}

.ledger-comparison-page .product-desc {
  font-size: 11px;
  color: var(--color-text-muted);              /* R14-C5: was #666 (Δ +53 manhattan, cold-shift) */
  line-height: 1.5;
  margin-bottom: 12px;
  min-height: 65px;
  flex: 1;
}

.ledger-comparison-page .product-pricing {
  margin: 12px 0;
}

.ledger-comparison-page .original-price {
  font-size: 12px;
  color: var(--color-text-placeholder);        /* R14-C5: was #999 (Δ +46 manhattan, cold-shift) */
  text-decoration: line-through;
  margin-right: 6px;
}

.ledger-comparison-page .current-price {
  font-size: 18px;
  font-weight: 700;
  color: #ff6b35;
}

.ledger-comparison-page .stock-info {
  margin: 8px 0;
  font-size: 11px;
  padding: 6px 10px;
  border-radius: 6px;
  display: inline-block;
  font-weight: 500;
}

.ledger-comparison-page .stock-info.in-stock {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.ledger-comparison-page .stock-info.low-stock {
  background: var(--color-warning-light);       /* R14-D5: was #fff3cd */
  color: #856404;
  border: 1px solid #ffeaa7;
}

.ledger-comparison-page .stock-info.out-stock {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.ledger-comparison-page .color-options {
  margin: 10px 0;
  font-size: 11px;
  color: var(--color-text-muted);              /* R14-C5: was #666 (Δ +53 manhattan, cold-shift) */
  padding: 6px;
  background: var(--color-bg-secondary);            /* R14-D3: was #f8f9fa (Δ 3) */
  border-radius: 6px;
}

.ledger-comparison-page .color-label {
  font-weight: 600;
  color: var(--color-text-secondary);          /* R14-C5: was #333 (Δ +39 manhattan, cold-shift) */
}

.ledger-comparison-page .comparison-table {
  width: 100%;
  margin-top: 30px;
  position: relative;
}

.ledger-comparison-page .sticky-header {
  position: sticky;
  top: 0;
  background: var(--color-bg-primary);              /* R14-D1: was #fff */
  z-index: 100;
  box-shadow: var(--shadow-md);
  display: none;
  border-radius: 8px 8px 0 0;
}

.ledger-comparison-page .sticky-header.active {
  display: grid;
}

.ledger-comparison-page .sticky-header-row {
  display: grid;
  grid-template-columns: 200px repeat(5, 1fr);
  border-bottom: 3px solid var(--color-primary);
}

.ledger-comparison-page .sticky-header-cell {
  padding: 15px 10px;
  font-weight: 600;
  font-size: 13px;
  text-align: center;
  border-right: 1px solid #e0e0e0;
  background: var(--color-bg-secondary);            /* R14-D3: was #f8f9fa (Δ 3) */
}

.ledger-comparison-page .sticky-header-cell:first-child {
  background: var(--color-primary);
  color: var(--color-text-inverse);              /* R14-C4: was #fff */
  text-align: left;
  padding-left: 20px;
  font-size: 14px;
}

.ledger-comparison-page .sticky-header-cell:last-child {
  border-right: none;
}

.ledger-comparison-page .comparison-row {
  display: grid;
  grid-template-columns: 200px repeat(5, 1fr);
  border-bottom: 1px solid #e0e0e0;
  min-height: 55px;
  transition: background 0.2s;
}

.ledger-comparison-page .comparison-row:hover {
  background: var(--color-bg-secondary);            /* R14-D3: was #f8f9fa (Δ 3) */
}

.ledger-comparison-page .comparison-row:last-child {
  border-bottom: none;
}

.ledger-comparison-page .section-title {
  background: var(--gradient-accent-purple);
  color: var(--color-text-inverse);              /* R14-C4: was #fff */
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 700;
  grid-column: 1 / -1;
  margin-top: 25px;
  border-radius: 8px;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow-primary);
}

.ledger-comparison-page .section-title:first-child {
  margin-top: 0;
  border-radius: 8px 8px 0 0;
}

.ledger-comparison-page .row-header {
  background: var(--color-bg-secondary);            /* R14-D3: was #f8f9fa (Δ 3) */
  padding: 15px 15px;
  font-weight: 600;
  font-size: 13px;
  display: flex;
  align-items: center;
  border-right: 1px solid #e0e0e0;
  color: var(--color-text-secondary);          /* R14-C5: was #333 (Δ +39 manhattan, cold-shift) */
}

.ledger-comparison-page .row-cell {
  padding: 15px 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  font-size: 12px;
  line-height: 1.7;
  border-right: 1px solid var(--color-border); /* R14-Q: was #e0e0e0 */
  color: var(--color-text-secondary); /* R14-Q: was #555 */
}

.ledger-comparison-page .row-cell:last-child {
  border-right: none;
}

.ledger-comparison-page .row-cell strong {
  color: var(--color-text);                         /* R14-Q: was #000 */
  font-weight: 600;
}

.ledger-comparison-page .row-cell small {
  color: var(--color-text-muted);                   /* R14-Q: was #888 */
  font-size: 10px;
}

.ledger-comparison-page .feature-check {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  line-height: 1.7;
  color: #28a745;
  font-weight: 500;
}

.ledger-comparison-page .feature-check::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-right: 6px;
  background-image: url('data:image/svg+xml;charset=UTF-8,<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><circle cx="8" cy="8" r="7" fill="%2328a745"/><path d="M5 8L7 10L11 6" stroke="white" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/></svg>');
  background-size: contain;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

.ledger-comparison-page .feature-cross {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  line-height: 1.7;
  color: #dc3545;
  font-weight: 500;
}

.ledger-comparison-page .feature-cross::before {
  content: '';
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-right: 6px;
  background-image: url('data:image/svg+xml;charset=UTF-8,<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg"><circle cx="8" cy="8" r="7" fill="%23dc3545"/><path d="M5 5L11 11M11 5L5 11" stroke="white" stroke-width="2" stroke-linecap="round"/></svg>');
  background-size: contain;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

.ledger-comparison-page .loading {
  text-align: center;
  padding: 50px 20px;
  font-size: 15px;
  color: var(--color-text-placeholder);        /* R14-C5: was #999 (Δ +46 manhattan, cold-shift) */
}

@media (max-width: 1400px) {
  .ledger-comparison-page .comparison-product-cards {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .ledger-comparison-page .comparison-row,
  .ledger-comparison-page .sticky-header-row {
    grid-template-columns: 180px repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .ledger-comparison-page .comparison-product-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ledger-comparison-page .comparison-row,
  .ledger-comparison-page .sticky-header-row {
    grid-template-columns: 160px repeat(2, 1fr);
  }
  
  .ledger-comparison-page .row-header {
    font-size: 12px;
    padding: 12px 10px;
  }
  
  .ledger-comparison-page .row-cell {
    font-size: 11px;
    padding: 12px 8px;
  }
}

@media (max-width: 768px) {
  .ledger-comparison-page .jumbotron {
    padding: 50px 0;
  }

  .ledger-comparison-page .fs-26 {
    font-size: 24px;
  }
  
  .ledger-comparison-page .fs-18 {
    font-size: 15px;
  }

  .ledger-comparison-page .comparison-header {
    display: block;
    padding: 25px 15px;
  }

  .ledger-comparison-page .comparison-header h2 {
    font-size: 18px;
    margin-bottom: 20px;
  }

  .ledger-comparison-page .product-selectors {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .ledger-comparison-page .product-select {
    padding: 12px 40px 12px 50px;
    font-size: 14px;
  }

  .ledger-comparison-page .selector-icon {
    width: 25px;
    height: 25px;
    left: 12px;
  }

  .ledger-comparison-page .comparison-wrapper {
    padding: 20px 10px;
  }

  .ledger-comparison-page .comparison-product-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 30px;
    padding-bottom: 25px;
  }

  .ledger-comparison-page .product-card-enhanced {
    padding: 12px 8px;
  }

  .ledger-comparison-page .product-badge,
  .ledger-comparison-page .product-sale-badge {
    top: 8px;
    padding: 3px 8px;
    font-size: 9px;
  }

  .ledger-comparison-page .product-sale-badge {
    right: 8px;
  }

  .ledger-comparison-page .product-image-wrapper {
    height: 100px;
    margin-bottom: 10px;
  }

  .ledger-comparison-page .product-image-wrapper img {
    max-height: 85px;
  }

  .ledger-comparison-page .product-card-enhanced h3 {
    font-size: 12px;
    margin-bottom: 8px;
  }

  .ledger-comparison-page .product-desc {
    font-size: 10px;
    min-height: 55px;
    margin-bottom: 8px;
  }

  .ledger-comparison-page .current-price {
    font-size: 14px;
  }

  .ledger-comparison-page .original-price {
    font-size: 11px;
  }

  .ledger-comparison-page .stock-info {
    font-size: 10px;
    padding: 4px 8px;
    margin: 6px 0;
  }

  .ledger-comparison-page .color-options {
    font-size: 9px;
    padding: 5px;
    margin: 8px 0;
  }

  .ledger-comparison-page .comparison-row,
  .ledger-comparison-page .sticky-header-row {
    grid-template-columns: 100px repeat(2, 1fr);
    min-height: auto;
  }

  .ledger-comparison-page .sticky-header {
    display: none !important;
  }

  .ledger-comparison-page .row-header {
    border-right: 1px solid #e0e0e0;
    padding: 10px 8px;
    font-size: 11px;
  }

  .ledger-comparison-page .row-cell {
    border-right: 1px solid #e0e0e0;
    padding: 10px 8px;
    font-size: 10px;
    line-height: 1.5;
  }

  .ledger-comparison-page .row-cell:last-child {
    border-right: none;
  }

  .ledger-comparison-page .row-cell small {
    font-size: 9px;
  }

  .ledger-comparison-page .section-title {
    font-size: 12px;
    padding: 10px 8px;
    margin-top: 18px;
  }

  .ledger-comparison-page .feature-check,
  .ledger-comparison-page .feature-cross {
    font-size: 10px;
  }

  .ledger-comparison-page .feature-check::before,
  .ledger-comparison-page .feature-cross::before {
    width: 11px;
    height: 11px;
    margin-right: 4px;
  }
}

@media (max-width: 480px) {
  .ledger-comparison-page .jumbotron {
    padding: 40px 0;
  }

  .ledger-comparison-page .fs-26 {
    font-size: 20px;
  }

  .ledger-comparison-page .comparison-product-cards {
    gap: 10px;
  }

  .ledger-comparison-page .product-card-enhanced {
    padding: 10px 6px;
  }

  .ledger-comparison-page .product-card-enhanced h3 {
    font-size: 11px;
  }

  .ledger-comparison-page .product-desc {
    font-size: 9px;
    min-height: 50px;
  }

  .ledger-comparison-page .current-price {
    font-size: 13px;
  }

  .ledger-comparison-page .row-header {
    font-size: 10px;
    padding: 8px 6px;
  }

  .ledger-comparison-page .row-cell {
    font-size: 9px;
    padding: 8px 6px;
  }
  
  .ledger-comparison-page .row-cell small {
    font-size: 8px;
  }

  .ledger-comparison-page .section-title {
    font-size: 11px;
    padding: 8px 6px;
  }
}

@media print {
  .ledger-comparison-page .comparison-header {
    display: none;
  }
  
  .ledger-comparison-page .jumbotron {
    background: var(--color-primary);
    color: var(--color-text-inverse);              /* R14-C4: was white */
    padding: 30px 0;
  }
  
  .ledger-comparison-page .comparison-product-cards {
    page-break-inside: avoid;
  }
  
  .ledger-comparison-page .comparison-row {
    page-break-inside: avoid;
  }
  
  .ledger-comparison-page .sticky-header {
    display: none !important;
  }
}

/* ========================================
   通用分页page样式
======================================== */
.pagination-wrapper {
    margin: 50px 0;
    padding: 30px 0;
    border-top: 1px solid #e5e5e5;
}

.pagination-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.pagination-info {
    display: flex;
    align-items: center;
    gap: 20px;
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    font-size: 14px;
}

.pagination-info strong {
    color: var(--color-primary);
    font-weight: 600;
    padding: 0 3px;
}

.pagination-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.pagination-item {
    margin: 0;
}

.pagination-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    padding: 0 12px;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    gap: 5px;
}

.pagination-link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.page-index,
.page-last {
    min-width: 70px;
}

.page-pre,
.page-next {
    min-width: 80px;
}

.pagination-text {
    white-space: nowrap;
}

.pagination-numbar-wrapper {
    display: flex;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.page-numbar {
    display: flex;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.page-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    height: 42px;
    padding: 0 12px;
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.page-num:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.page-num-current {
    background: var(--gradient-brand);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    font-weight: 600;
    cursor: default;
    pointer-events: none;
}

.page-status {
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    font-size: 14px;
    padding: 0 10px;
}

.page-select {
    height: 42px;
    padding: 0 35px 0 15px;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background: var(--color-bg-primary) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12"><path fill="%23333" d="M6 9L1 4h10z"/></svg>') no-repeat right 12px center;   /* R14-D1: was #ffffff (SVG arrow) */
    background-size: 12px;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    font-size: 14px;
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    transition: all 0.3s ease;
}

.page-select:hover {
    border-color: var(--color-primary);
}

.page-select:focus {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

.empty-result {
    text-align: center;
    padding: 80px 20px;
}

.empty-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    margin-bottom: 30px;
    background: var(--gradient-brand-soft-10);
    border-radius: 50%;
}

.empty-icon i {
    font-size: 48px;
    color: var(--color-primary);
}

.empty-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    margin: 0 0 15px;
}

.empty-desc {
    font-size: 15px;
    color: var(--color-text-placeholder);      /* R14-C5: was #999999 (Δ +46 manhattan, cold-shift) */
    margin: 0 0 30px;
}

.empty-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    background: var(--gradient-brand);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    text-decoration: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.empty-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

@media (max-width: 991px) {
    .pagination-container {
        justify-content: center;
    }
    
    .pagination-info {
        width: 100%;
        justify-content: center;
        order: -1;
    }
}

@media (max-width: 768px) {
    .pagination-wrapper {
        margin: 30px 0;
        padding: 20px 0;
    }
    
    .pagination-info {
        flex-direction: column;
        gap: 8px;
        font-size: 13px;
    }
    
    .pagination-link,
    .page-num {
        min-width: 38px;
        height: 38px;
        padding: 0 10px;
        font-size: 13px;
    }
    
    .page-index,
    .page-last,
    .page-pre,
    .page-next {
        min-width: 38px;
    }
    
    .pagination-text {
        display: none;
    }
    
    .page-select {
        height: 38px;
        font-size: 13px;
    }
    
    .empty-result {
        padding: 60px 20px;
    }
    
    .empty-icon {
        width: 80px;
        height: 80px;
        margin-bottom: 20px;
    }
    
    .empty-icon i {
        font-size: 36px;
    }
    
    .empty-title {
        font-size: 20px;
    }
    
    .empty-desc {
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .pagination-list {
        gap: 5px;
        justify-content: center;
    }
    
    .pagination-numbar-wrapper,
    .page-numbar {
        gap: 5px;
    }
    
    .pagination-link,
    .page-num {
        min-width: 36px;
        height: 36px;
        padding: 0 8px;
        font-size: 12px;
    }
    
    .page-select {
        height: 36px;
        padding: 0 30px 0 12px;
        font-size: 12px;
    }
}
/* ========================================
   通用产品列表样式
======================================== */
.product-list-page {
    padding: 60px 0 80px;
    background: var(--color-bg-secondary);            /* R14-D3: was #f5f5f5 (Δ 15, cold-shift) */
    min-height: 100vh;
}

.product-list-page .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.product-list-page .product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.product-list-page .product-card {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.product-list-page .product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-list-page .product-image-link {
    display: block;
    text-decoration: none;
}

.product-list-page .product-img-box {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
    background: var(--color-bg-light);                /* R14-D3: was #fafafa (Δ 3) */
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-list-page .product-img-box img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    padding: 24px;
    transition: transform 0.4s ease;
}

.product-list-page .product-card:hover .product-img-box img {
    transform: scale(1.05);
}

.product-list-page .product-badges {
    position: absolute;
    top: 16px;
    left: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 2;
}

.product-list-page .badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-sm);
}

.product-list-page .badge-top {
    background: #ff3b30;
}

.product-list-page .badge-recommend {
    background: #ff9500;
}

.product-list-page .badge-headline {
    background: var(--color-primary);
}

.product-list-page .product-info {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-list-page .product-title {
    font-size: 17px;
    font-weight: 700;
    margin: 0 0 12px;
    line-height: 1.5;
    height: 51px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.product-list-page .product-title a {
    color: var(--color-text); /* R14-Q: was #1a1a1a, 深色主题不可见 */
    text-decoration: none;
    transition: color 0.3s ease;
}

.product-list-page .product-title a:hover {
    color: var(--color-primary);
}

.product-list-page .product-desc {
    font-size: 14px;
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    line-height: 1.6;
    margin: 0 0 16px;
    height: 44px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.product-list-page .product-price-box {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.product-list-page .product-price {
    font-size: 24px;
    font-weight: 800;
    color: #e53935;
}

.product-list-page .product-price-ori {
    font-size: 15px;
    color: var(--color-text-placeholder);      /* R14-C5: was #999999 (Δ +46 manhattan, cold-shift) */
    text-decoration: line-through;
}

.product-list-page .product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    min-height: 32px;
}

.product-list-page .product-tag {
    padding: 6px 12px;
    background: var(--color-bg-secondary);            /* R14-D3: was #f5f5f5 (Δ 15, cold-shift) */
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.product-list-page .product-tag:hover {
    background: var(--color-bg-dark);             /* R14-D4: was #1a1a1a */
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
}

.product-list-page .product-btns {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: auto;
}

.product-list-page .btn-detail,
.product-list-page .btn-compare {
    display: block;
    text-align: center;
    padding: 14px 24px;
    border-radius: var(--radius-btn-lg);
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.product-list-page .btn-detail {
    background: var(--color-primary);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border: 2px solid var(--color-primary);
}

.product-list-page .btn-detail:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.product-list-page .btn-compare {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    color: var(--color-text); /* R14-Q: was #1a1a1a */
    border: 2px solid var(--color-border); /* R14-Q: was #e0e0e0 */
}

.product-list-page .btn-compare:hover {
    background: var(--color-bg-dark);             /* R14-D4: was #1a1a1a */
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    border-color: var(--color-bg-dark); /* R14-Q: was #1a1a1a */
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

@media (max-width: 1199px) {
    .product-list-page .product-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
}

@media (max-width: 991px) {
    .product-list-page {
        padding: 40px 0 60px;
    }

    .product-list-page .container {
        padding: 0 20px;
    }
    
    .product-list-page .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        margin-bottom: 50px;
    }

    .product-list-page .product-img-box {
        height: 240px;
    }

    .product-list-page .product-title {
        font-size: 16px;
        height: 48px;
    }
}

@media (max-width: 768px) {
    .product-list-page {
        padding: 32px 0 48px;
    }

    .product-list-page .container {
        padding: 0 16px;
    }
    
    .product-list-page .product-grid {
        gap: 16px;
    }

    .product-list-page .product-img-box {
        height: 220px;
    }

    .product-list-page .product-info {
        padding: 20px 18px;
    }
    
    .product-list-page .product-title {
        font-size: 15px;
        height: 45px;
        margin-bottom: 10px;
    }
    
    .product-list-page .product-desc {
        font-size: 13px;
        height: 42px;
        margin-bottom: 14px;
    }
    
    .product-list-page .product-price {
        font-size: 20px;
    }
    
    .product-list-page .product-price-ori {
        font-size: 14px;
    }

    .product-list-page .product-tags {
        margin-bottom: 16px;
    }
    
    .product-list-page .badge {
        padding: 5px 11px;
        font-size: 10px;
    }

    .product-list-page .btn-detail,
    .product-list-page .btn-compare {
        padding: 12px 20px;
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .product-list-page {
        padding: 24px 0 40px;
    }

    .product-list-page .container {
        padding: 0 16px;
    }

    .product-list-page .product-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 40px;
    }

    .product-list-page .product-card {
        border-radius: var(--radius-card);
    }

    .product-list-page .product-img-box {
        height: 260px;
    }
    
    .product-list-page .product-info {
        padding: 24px 20px;
    }
    
    .product-list-page .product-title {
        font-size: 17px;
        height: 51px;
        margin-bottom: 12px;
    }
    
    .product-list-page .product-desc {
        font-size: 14px;
        height: 44px;
        margin-bottom: 16px;
    }
    
    .product-list-page .product-price {
        font-size: 24px;
    }
    
    .product-list-page .product-price-ori {
        font-size: 15px;
    }

    .product-list-page .product-tags {
        margin-bottom: 20px;
    }
    
    .product-list-page .product-tag {
        padding: 6px 12px;
        font-size: 12px;
    }

    .product-list-page .product-btns {
        gap: 14px;
    }

    .product-list-page .btn-detail,
    .product-list-page .btn-compare {
        padding: 16px 24px;
        font-size: 16px;
        border-radius: 14px;
    }
}

@media (max-width: 400px) {
    .product-list-page .container {
        padding: 0 14px;
    }

    .product-list-page .product-grid {
        gap: 18px;
    }

    .product-list-page .product-img-box {
        height: 240px;
    }

    .product-list-page .product-info {
        padding: 20px 18px;
    }
    
    .product-list-page .product-title {
        font-size: 16px;
    }

    .product-list-page .product-desc {
        font-size: 13px;
    }
}
/* ========================================
   通用产品详情样式
======================================== */
.product-detail-page {
    padding: 60px 0 80px;
    background: var(--color-bg-secondary);            /* R14-D3: was #f5f5f5 (Δ 15, cold-shift) */
    min-height: 100vh
}

.product-detail-page .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px
}

.product-detail-page .product-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    background: var(--color-bg-primary);              /* R14-D1: was #fff */
    border-radius: var(--radius-card);
    padding: 48px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-card)
}

.product-detail-page .product-gallery-section {
    display: flex;
    flex-direction: column;
    gap: 24px
}

.product-detail-page .main-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    background: var(--gradient-neutral-cool);
    border-radius: var(--radius-image);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-in
}

.product-detail-page .main-image-wrapper img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    padding: 32px;
    transition: all .3s ease
}

.product-detail-page .main-image-wrapper:hover img {
    transform: scale(1.05)
}

.product-detail-page .zoom-indicator {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 16px;
    background: rgba(26, 26, 26, .85);
    color: var(--color-text-inverse);              /* R14-C4: was #fff */
    border-radius: var(--radius-chip);
    font-size: 13px;
    font-weight: 600;
    opacity: 0;
    transition: opacity .3s ease;
    pointer-events: none
}

.product-detail-page .main-image-wrapper:hover .zoom-indicator {
    opacity: 1
}

.product-detail-page .thumbnail-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 12px
}

.product-detail-page .thumbnail-item {
    aspect-ratio: 1;
    background: var(--color-bg-light);                /* R14-D3: was #fafafa (Δ 3) */
    border-radius: var(--radius-image);
    overflow: hidden;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all .3s ease
}

.product-detail-page .thumbnail-item:hover {
    border-color: var(--color-border); /* R14-Q: was #e0e0e0 */
    transform: translateY(-2px)
}

.product-detail-page .thumbnail-item.active {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-primary)
}

.product-detail-page .thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px
}

.product-detail-page .product-info-section {
    display: flex;
    flex-direction: column;
    gap: 28px
}

.product-detail-page .product-header {
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 24px
}

.product-detail-page .product-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-text);                         /* R14-Q: was #1a1a1a, 深色主题下反白不可见 */
    margin: 0 0 20px;
    line-height: 1.4;
    letter-spacing: -.5px
}

.product-detail-page .product-tags-wrapper {
    margin-top: 16px
}

.product-detail-page .product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px
}

.product-detail-page .tag-item {
    display: inline-block;
    padding: 8px 16px;
    background: var(--gradient-neutral-card);
    color: var(--color-text-secondary);          /* R14-C5: was #333 (Δ +39 manhattan, cold-shift) */
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid #e0e0e0
}

.product-detail-page .product-pricing-box {
    background: var(--card-bg-elevated);              /* R14-Q: was var(--gradient-neutral-warm-cream), 浅色 cream 在深色主题不可读 */
    border-radius: var(--radius-card);
    padding: 28px;
    border: 2px solid var(--color-border)             /* R14-Q: was #ffe4c4, 浅橙硬编码 */
}

.product-detail-page .price-main {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 16px
}

.product-detail-page .price-main .label {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-muted);              /* R14-C5: was #666 (Δ +53 manhattan, cold-shift) */
    min-width: 60px
}

.product-detail-page .price-main .value {
    font-size: 36px;
    font-weight: 900;
    color: #e53935;
    letter-spacing: -1px
}

.product-detail-page .price-original {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 20px
}

.product-detail-page .price-original .label {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-muted);              /* R14-C5: was #666 (Δ +53 manhattan, cold-shift) */
    min-width: 60px
}

.product-detail-page .price-original .value {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-placeholder);        /* R14-C5: was #999 (Δ +46 manhattan, cold-shift) */
    text-decoration: line-through
}

.product-detail-page .stock-status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border-light);  /* R14-Q: was #ffd4a8 */
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-secondary)                /* R14-Q: was #666, 深色主题反白不清 */
}

.product-detail-page .stock-status svg {
    flex-shrink: 0;
    color: var(--color-warning)                       /* R14-Q: was #ff9500, 语义 warning 色 */
}

.product-detail-page .tips-notice {
    background: var(--gradient-primary-bg-soft-sky);
    border-radius: var(--radius-card);
    padding: 24px;
    border: 2px solid #c4e0ff;
    display: flex;
    gap: 16px
}

.product-detail-page .tips-icon svg {
    color: var(--color-primary);
    flex-shrink: 0
}

.product-detail-page .tips-content strong {
    display: block;
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);                         /* R14-Q: was #1a1a1a */
    margin-bottom: 8px
}

.product-detail-page .tips-content p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-secondary);          /* R14-C5: was #333 (Δ +39 manhattan, cold-shift) */
    margin: 0
}

.product-detail-page .color-selection-area {
    background: var(--color-bg-light);                /* R14-D3: was #fafafa (Δ 3) */
    border-radius: var(--radius-card);
    padding: 24px
}

.product-detail-page .selection-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);                         /* R14-Q: was #1a1a1a */
    margin: 0 0 16px
}

.product-detail-page .color-options-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px
}

.product-detail-page .color-option {
    padding: 14px 12px;
    background: var(--card-bg-elevated);              /* R14-Q: was var(--color-bg-primary), 换成 elevated 深色主题可见 */
    border: 2px solid var(--color-border);            /* R14-Q: was #e0e0e0 */
    border-radius: var(--radius-card);
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);                         /* R14-Q: was #1a1a1a */
    cursor: pointer;
    transition: all .3s ease;
    text-align: center
}

.product-detail-page .color-option:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-lightest);  /* R14-D5: was #f0f7ff */
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary)
}

.product-detail-page .color-option.active {
    border-color: var(--color-primary);
    background: var(--gradient-apple-blue);
    color: var(--color-text-inverse);              /* R14-C4: was #fff */
    box-shadow: var(--shadow-primary)
}

.product-detail-page .purchase-area {
    margin-top: auto
}

.product-detail-page .btn-purchase {
    width: 100%;
    padding: 20px 32px;
    background: var(--gradient-apple-blue);
    color: var(--color-text-inverse);              /* R14-C4: was #fff */
    border: none;
    border-radius: var(--radius-btn-lg);
    font-size: 18px;
    font-weight: 800;
    cursor: pointer;
    transition: all .3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    box-shadow: var(--shadow-primary)
}

.product-detail-page .btn-purchase:hover {
    background: var(--gradient-apple-blue-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary-lg)
}

.product-detail-page .btn-purchase:active {
    transform: translateY(-1px)
}

.product-detail-page .platforms-grid {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 20px
}

.product-detail-page .platforms-grid.show {
    display: grid;
    animation: slideDown .4s ease
}

.product-detail-page .platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px 16px;
    background: var(--card-bg-elevated);              /* R14-Q: was var(--color-bg-primary) */
    border: 2px solid var(--color-border);            /* R14-Q: was #e0e0e0 */
    border-radius: var(--radius-card);
    text-decoration: none;
    color: var(--color-text);                         /* R14-Q: was #1a1a1a */
    font-size: 14px;
    font-weight: 600;
    transition: all .3s ease
}

.product-detail-page .platform-item:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-lightest);  /* R14-D5: was #f0f7ff */
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow-primary)
}

.product-detail-page .platform-item img {
    width: 48px;
    height: 48px;
    object-fit: contain
}

.product-detail-page .product-description-section {
    background: var(--card-bg-elevated);              /* R14-Q: was var(--color-bg-primary), 深色主题用 elevated */
    border-radius: var(--radius-card);
    padding: 48px;
    box-shadow: var(--shadow-card)
}

.product-detail-page .section-header {
    margin-bottom: 40px
}

.product-detail-page .section-title {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-text);                         /* R14-Q: was #1a1a1a */
    margin: 0 0 16px;
    letter-spacing: -.5px
}

.product-detail-page .section-divider {
    width: 80px;
    height: 4px;
    background: var(--gradient-apple-blue-90);
    border-radius: 2px
}

.product-detail-page .rich-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary)                /* R14-Q: was #333 */
}

.product-detail-page .rich-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-image);
    margin: 20px 0
}

.product-detail-page .rich-content p {
    margin-bottom: 16px
}

.product-detail-page .rich-content h2,
.product-detail-page .rich-content h3,
.product-detail-page .rich-content h4 {
    margin-top: 32px;
    margin-bottom: 16px;
    font-weight: 700;
    color: var(--color-text)                          /* R14-Q: was #1a1a1a */
}

.image-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
    transition: background .3s ease
}

.image-lightbox.active {
    background: rgba(0, 0, 0, .95)
}

.image-lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    opacity: 0;
    transform: scale(.8);
    transition: all .3s ease
}

.image-lightbox.active img {
    opacity: 1;
    transform: scale(1)
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px)
    }

    to {
        opacity: 1;
        transform: translateY(0)
    }
}

@media (max-width:991px) {
    .product-detail-page {
        padding: 40px 0 60px
    }

    .product-detail-page .container {
        padding: 0 20px
    }

    .product-detail-page .product-layout {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 36px
    }

    .product-detail-page .product-title {
        font-size: 28px
    }

    .product-detail-page .price-main .value {
        font-size: 32px
    }

    .product-detail-page .product-description-section {
        padding: 36px
    }

    .product-detail-page .section-title {
        font-size: 24px
    }
}

@media (max-width:768px) {
    .product-detail-page {
        padding: 32px 0 48px
    }

    .product-detail-page .container {
        padding: 0 16px
    }

    .product-detail-page .product-layout {
        padding: 28px 24px;
        border-radius: var(--radius-card);
        gap: 32px
    }

    .product-detail-page .thumbnail-gallery {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        gap: 10px
    }

    .product-detail-page .main-image-wrapper {
        border-radius: var(--radius-image)
    }

    .product-detail-page .main-image-wrapper img {
        padding: 24px
    }

    .product-detail-page .color-options-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px
    }

    .product-detail-page .color-option {
        padding: 12px 10px;
        font-size: 13px
    }

    .product-detail-page .product-title {
        font-size: 24px
    }

    .product-detail-page .product-pricing-box {
        padding: 24px
    }

    .product-detail-page .price-main .value {
        font-size: 28px
    }

    .product-detail-page .price-original .value {
        font-size: 18px
    }

    .product-detail-page .btn-purchase {
        padding: 18px 28px;
        font-size: 17px
    }

    .product-detail-page .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px
    }

    .product-detail-page .platform-item {
        padding: 18px 14px;
        font-size: 13px
    }

    .product-detail-page .platform-item img {
        width: 42px;
        height: 42px
    }

    .product-detail-page .product-description-section {
        padding: 28px 24px;
        border-radius: var(--radius-card)
    }

    .product-detail-page .section-title {
        font-size: 22px
    }

    .product-detail-page .rich-content {
        font-size: 15px
    }
}

@media (max-width:576px) {
    .product-detail-page {
        padding: 24px 0 40px
    }

    .product-detail-page .container {
        padding: 0 16px
    }

    .product-detail-page .product-layout {
        padding: 24px 20px;
        border-radius: var(--radius-card);
        gap: 28px
    }

    .product-detail-page .thumbnail-gallery {
        grid-template-columns: repeat(4, 1fr)
    }

    .product-detail-page .color-selection-area {
        padding: 20px
    }

    .product-detail-page .selection-title {
        font-size: 15px;
        margin-bottom: 14px
    }

    .product-detail-page .color-options-list {
        grid-template-columns: repeat(2, 1fr)
    }

    .product-detail-page .product-title {
        font-size: 22px
    }

    .product-detail-page .tag-item {
        padding: 6px 12px;
        font-size: 12px
    }

    .product-detail-page .product-pricing-box {
        padding: 20px
    }

    .product-detail-page .price-main .value {
        font-size: 26px
    }

    .product-detail-page .tips-notice {
        padding: 20px;
        flex-direction: column;
        gap: 12px
    }

    .product-detail-page .tips-content strong {
        font-size: 15px
    }

    .product-detail-page .tips-content p {
        font-size: 13px
    }

    .product-detail-page .btn-purchase {
        padding: 16px 24px;
        font-size: 16px
    }

    .product-detail-page .platforms-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px
    }

    .product-detail-page .platform-item {
        padding: 16px 12px;
        gap: 10px
    }

    .product-detail-page .platform-item img {
        width: 40px;
        height: 40px
    }

    .product-detail-page .product-description-section {
        padding: 24px 20px;
        border-radius: var(--radius-card)
    }

    .product-detail-page .section-header {
        margin-bottom: 32px
    }

    .product-detail-page .section-title {
        font-size: 20px
    }

    .product-detail-page .rich-content {
        font-size: 14px
    }
}

@media (max-width:400px) {
    .product-detail-page .container {
        padding: 0 14px
    }

    .product-detail-page .product-layout {
        padding: 20px 16px
    }

    .product-detail-page .product-title {
        font-size: 20px
    }

    .product-detail-page .price-main .value {
        font-size: 24px
    }

    .product-detail-page .product-description-section {
        padding: 20px 16px
    }
}
/* ========================================
   通用FAQ区域
======================================== */
.index-faq {
    background: var(--color-bg-secondary);            /* R14-D3: was #f8f9fa (Δ 3) */
}

.faq-accordion {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border-radius: var(--radius-card);
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-xs);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-card-hover);
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    margin: 0;
    flex: 1;
}

.faq-question i {
    font-size: 18px;
    color: var(--color-primary);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 30px 20px;
    margin: 0;
    font-size: 14px;
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    line-height: 1.8;
}

.faq-more {
    display: inline-flex;
    align-items: center;
    margin: 0 30px 25px;
    color: var(--color-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.faq-more i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.faq-more:hover {
    color: #00cc88;
}

.faq-more:hover i {
    transform: translateX(5px);
}

/* ========================================
   资讯区域
======================================== */
.news-card {
    background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    margin-bottom: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card-hover);
}

.news-image {
    position: relative;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-category {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 6px 15px;
    background: var(--gradient-brand);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-chip);
}

.news-content {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.news-title a {
    color: var(--color-text-secondary);        /* R14-C5: was #333333 (Δ +39 manhattan, cold-shift) */
    text-decoration: none;
    transition: color 0.3s ease;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-title a:hover {
    color: var(--color-primary);
}

.news-excerpt {
    font-size: 14px;
    color: var(--color-text-muted);            /* R14-C5: was #666666 (Δ +53 manhattan, cold-shift) */
    line-height: 1.6;
    margin-bottom: 15px;
    flex: 1;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #f0f0f0;
}

.news-date {
    font-size: 13px;
    color: var(--color-text-placeholder);      /* R14-C5: was #999999 (Δ +46 manhattan, cold-shift) */
}

.news-date i {
    margin-right: 5px;
}

.news-more {
    color: var(--color-primary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.news-more i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.news-more:hover {
    color: #00cc88;
}

.news-more:hover i {
    transform: translateX(5px);
}

/* ========================================
   官方认证区域
======================================== */
.index-certification {
    /* R14-S: 本块整段被 index.html 里 .index-page 作用域 override (bg + 所有内文);
       保留 fallback 时也改 theme-aware 避免 non-index-page 场景意外继承 */
    background: var(--gradient-dark-hero);
    color: var(--color-text);                    /* R14-S: was var(--color-text-inverse) */
}

.certification-wrapper {
    padding: 40px 0;
}

.certification-content {
    padding-right: 30px;
}

.certification-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);                    /* R14-S: was var(--color-text-inverse) */
    margin-bottom: 20px;
}

.certification-desc {
    font-size: 15px;
    color: var(--color-text-secondary);          /* R14-S: was rgba(255,255,255,0.85) */
    line-height: 1.8;
    margin-bottom: 40px;
}

.certification-desc strong {
    color: #00cc88;
}

.certification-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-muted);              /* R14-S: was rgba(255,255,255,0.7) */
}

.certification-image img {
    width: 100%;
    border-radius: var(--radius-image);
    box-shadow: var(--shadow-lg);
}

/* ========================================
   响应式设计
======================================== */
@media (max-width: 991px) {
    .section-title {
        font-size: 28px;
    }
    
    .about-text,
    .about-features {
        padding: 0;
    }
    
    .about-features {
        margin-top: 40px;
    }
    
    .certification-content {
        padding-right: 0;
        margin-bottom: 40px;
    }
}

@media (max-width: 768px) {
    .index-about,
    .index-products,
    .index-advantages,
    .index-guide,
    .index-faq,
    .index-news,
    .index-certification {
        padding: 50px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    .about-actions {
        flex-direction: column;
    }
    
    .about-actions .btn {
        width: 100%;
    }
    
    .certification-stats {
        gap: 20px;
    }
    
    .stat-item {
        flex: 0 0 calc(50% - 10px);
    }
}

@media (max-width: 576px) {
    .section-title {
        font-size: 24px;
    }
    
    .section-subtitle {
        font-size: 14px;
    }
    
    .product-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .product-actions .btn {
        width: 100%;
    }
}
/* ========================================
   版权信息区域 - 全新升级版
======================================== */
.footer-copyright {
    padding: 0;
    background: none;
}

/* 认证标识区 */
.copyright-badges {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    padding: 30px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 30px;
}

.badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    cursor: default;
}

.badge-item:hover {
    transform: translateY(-3px);
}

.badge-item i {
    width: 50px;
    height: 50px;
    background: var(--gradient-brand-soft-20);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #00cc88;
    transition: all 0.3s ease;
}

.badge-item:hover i {
    background: var(--gradient-brand);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    transform: rotate(360deg);
}

.badge-item span {
    font-size: 13px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.badge-item:hover span {
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
}

/* 版权主体内容 */
.copyright-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    gap: 30px;
}

.copyright-left {
    display: flex;
    align-items: center;
    gap: 25px;
}

.copyright-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.copyright-logo i {
    font-size: 24px;
    color: var(--color-primary);
}

.copyright-year {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 500;
}

.copyright-company {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.company-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    display: flex;
    align-items: center;
    gap: 8px;
}

.company-name::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--gradient-primary-vertical);
    border-radius: 2px;
}

.company-slogan {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    font-style: italic;
}

.copyright-right {
    flex-shrink: 0;
}

.copyright-links {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
}

.copyright-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 12px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.copyright-link:hover {
    background: rgba(var(--color-primary-rgb), 0.15);
    border-color: var(--color-primary);
    color: var(--color-text-inverse);            /* R14-C4: was #ffffff */
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.copyright-link i {
    font-size: 14px;
    color: var(--color-primary);
}

.copyright-link:hover i {
    color: #00cc88;
}

.copyright-statement {
    padding: 25px 0;
    text-align: center;
}

.statement-text {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background: rgba(var(--color-primary-rgb), 0.08);
    border: 1px solid rgba(var(--color-primary-rgb), 0.2);
    border-radius: 50px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin: 0;
    max-width: 900px;
}

.statement-text i {
    font-size: 16px;
    color: var(--color-primary);
    flex-shrink: 0;
}

@media (max-width: 991px) {
    .links-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 10px;
    }
    
    .copyright-badges {
        gap: 25px;
    }
    
    .badge-item i {
        width: 45px;
        height: 45px;
        font-size: 20px;
    }
    
    .copyright-main {
        flex-direction: column;
        text-align: center;
        gap: 25px;
    }
    
    .copyright-left {
        flex-direction: column;
        gap: 15px;
    }
    
    .copyright-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .footer-links-section {
        padding: 30px 0;
    }
    
    .links-header {
        margin-bottom: 20px;
    }
    
    .links-title {
        font-size: 16px;
    }
    
    .links-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 8px;
    }
    
    .link-item {
        padding: 10px 12px;
        font-size: 12px;
    }
    
    .copyright-badges {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 25px 0;
    }
    
    .badge-item {
        gap: 6px;
    }
    
    .badge-item i {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    .badge-item span {
        font-size: 12px;
    }
    
    .copyright-main {
        padding: 20px 0;
    }
    
    .company-name {
        font-size: 15px;
    }
    
    .copyright-links {
        gap: 10px;
    }
    
    .copyright-link {
        padding: 6px 12px;
        font-size: 11px;
    }
    
    .copyright-statement {
        padding: 20px 0;
    }
    
    .statement-text {
        flex-direction: column;
        text-align: center;
        font-size: 12px;
        padding: 15px 20px;
    }
}

@media (max-width: 576px) {
    .links-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .link-item {
        padding: 8px 10px;
        font-size: 11px;
    }
    
    .copyright-badges {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .copyright-logo {
        flex-direction: column;
        gap: 5px;
    }
    
    .copyright-links {
        flex-wrap: wrap;
    }
    
    .copyright-link {
        justify-content: center;
    }
}

/* ========================================
   打印样式优化
======================================== */
@media print {
    .footer-links-section {
        display: none;
    }
    
    .copyright-badges {
        display: none;
    }
    
    .copyright-main {
        border: none;
        padding: 10px 0;
    }
    
    .copyright-statement {
        display: none;
    }
}
/* ========================================
   通用新闻样式样式
======================================== */
:root {
  /* R14-C1 bridge: 绿/黄灯项 → theme-aware tokens.base token */
  --primary: var(--color-primary);                       /* was #2563eb */
  --primary-light: var(--color-primary-light);           /* was #3b82f6; complete-theme-system 兜底 #3b82f6, runtime 零回归 */
  /* R14-C1c: --primary-dark 定义已删除（C1b 消费侧全部去中介化，此处死代码清理） */
  --danger: var(--color-danger);                         /* was #ef4444 */
  --warning: var(--color-warning);                       /* was #f59e0b */
  /* R14-C1 γ 红灯 literal: 视觉显著差异项保 literal */
  --info: var(--color-info-bright);                      /* R14-C2: was #06b6d4; bridge 到新增 --color-info-bright（cyan-500 语义） */
  /* R14-Q: γ-literal 亮色硬码 → theme-aware token,修复 news/faq/about 在深色主题下"白卡黑字" */
  --text-primary: var(--color-text);                     /* R14-Q: was #111827 硬码, 深色主题不变色 */
  --text-secondary: var(--color-text-secondary);         /* R14-Q: was #374151 硬码 */
  --text-tertiary: var(--color-text-muted);              /* R14-Q: was #6b7280 硬码 */
  --text-muted: var(--color-text-muted);                 /* R14-Q: was #9ca3af 硬码 */
  --bg-page: var(--color-bg);                            /* R14-C1 bridge: was #f8fafc; 黄灯差 rgb 5（肉眼不可辨） */
  --bg-white: var(--card-bg-elevated);                   /* R14-Q: was #ffffff 硬码, 深色主题反白不可见 */
  --bg-hover: var(--color-bg-secondary);                 /* R14-Q: was #f1f5f9 硬码 */
  --border-base: var(--color-border);                    /* R14-Q: was #e2e8f0 硬码 */
  --border-light: var(--color-border-light);             /* R14-Q: was #f1f5f9 硬码 */
  /* R14-E: 非颜色 vars 清理（8 条死代码删除）
     · shadow-sm/md/lg + radius-sm/md/lg + transition 共 7 条被 L10148 :root cascade override，死代码
     · font-base 全项目 0 consumers，孤儿
     · 唯一源头归并至 L10148 :root 块（已于 R14-E bridge 到 tokens.base canonical token） */
}

.news-page,
.article-page {
  background: var(--bg-page);
  padding: 16px 0 32px;
  min-height: 50vh;
}

.news-page .container,
.article-page .container {
  width: 100%;
  padding: 0 16px;
  margin: 0 auto;
}

.news-page .row,
.article-page .row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -16px;
}

.news-page .news-main,
.article-page .article-main {
  width: 100%;
  padding: 0 16px;
}

.news-page .news-sidebar,
.article-page .article-sidebar {
  width: 100%;
  padding: 0 16px;
  margin-top: 24px;
}

.news-page .page-header {
  background: var(--bg-white);
  padding: 20px;
  margin-bottom: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--primary);
}

.news-page .page-header .h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 8px;
}

.news-page .page-header p {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.6;
  margin: 0;
}

.news-page .news-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.news-page .news-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s var(--transition);
  border: 1px solid var(--border-light);
  position: relative;
}

.news-page .news-item:active {
  transform: scale(0.98);
}

.news-page .news-item .media {
  display: block;
  padding: 0;
}

.news-page .news-thumb {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--gradient-info-bg);
  position: relative;
}

.news-page .news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.news-page .media-body {
  padding: 18px;
}

.news-page .news-title {
  margin: 0 0 12px;
  line-height: 1.45;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
}

.news-page .news-title a {
  color: inherit;
  text-decoration: none;
  display: block;
}

.news-page .news-title a:active {
  color: var(--primary);
}

.news-page .news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.news-page .news-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-page .news-meta i {
  font-size: 12px;
}

.news-page .news-meta a {
  color: inherit;
  text-decoration: none;
}

.news-page .news-meta .badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-chip);
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
}

.news-page .badge-danger {
  background: var(--danger);
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.news-page .badge-warning {
  background: var(--warning);
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.news-page .badge-info {
  background: var(--info);
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.news-page .news-excerpt {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-page .news-pagination {
  margin-top: 32px;
  display: flex;
  justify-content: center;
}

.news-page .sidebar-block,
.article-page .sidebar-block {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.news-page .sidebar-block h2,
.article-page .sidebar-block h2 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-light);
  position: relative;
}

.news-page .sidebar-block h2::after,
.article-page .sidebar-block h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--primary);
}

.news-page .sidebar-block ul,
.news-page .sidebar-block ol,
.article-page .sidebar-block ul,
.article-page .sidebar-block ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.news-page .sidebar-block li,
.article-page .sidebar-block li {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.news-page .sidebar-block li:last-child,
.article-page .sidebar-block li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.news-page .sidebar-block li a,
.article-page .sidebar-block li a {
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-secondary);
  text-decoration: none;
  display: block;
  transition: color 0.2s var(--transition);
}

.news-page .sidebar-block li a:active,
.article-page .sidebar-block li a:active {
  color: var(--primary);
}

.news-page .sidebar-block small,
.article-page .sidebar-block small {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
  display: block;
}

.news-page .sidebar-block ol,
.article-page .sidebar-block ol {
  counter-reset: rank;
}

.news-page .sidebar-block ol li,
.article-page .sidebar-block ol li {
  counter-increment: rank;
  padding-left: 30px;
  position: relative;
}

.news-page .sidebar-block ol li::before,
.article-page .sidebar-block ol li::before {
  content: counter(rank);
  position: absolute;
  left: 0;
  top: 0;
  width: 22px;
  height: 22px;
  line-height: 22px;
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  border-radius: 4px;
  background: var(--bg-hover);
  color: var(--text-muted);
}

.news-page .sidebar-block ol li:nth-child(1)::before,
.article-page .sidebar-block ol li:nth-child(1)::before {
  background: var(--danger);
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.news-page .sidebar-block ol li:nth-child(2)::before,
.article-page .sidebar-block ol li:nth-child(2)::before {
  background: var(--warning);
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.news-page .sidebar-block ol li:nth-child(3)::before,
.article-page .sidebar-block ol li:nth-child(3)::before {
  background: var(--info);
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.article-page .article-header {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 24px 20px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.article-page .article-title {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
  margin: 0 0 16px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.article-page .article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-tertiary);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 20px;
}

.article-page .article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-page .article-meta i {
  font-size: 12px;
}

.article-page .article-meta a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s var(--transition);
}

.article-page .article-meta a:active {
  color: var(--primary);
}

.article-page .article-cover {
  width: 100%;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--gradient-info-bg);
}

.article-page .article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.article-page .article-content {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.article-page .article-content > *:first-child {
  margin-top: 0;
}

.article-page .article-content > *:last-child {
  margin-bottom: 0;
}

.article-page .article-content p {
  margin: 0 0 18px;
  text-align: justify;
}

.article-page .article-content h1,
.article-page .article-content h2,
.article-page .article-content h3,
.article-page .article-content h4,
.article-page .article-content h5,
.article-page .article-content h6 {
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
  margin: 32px 0 16px;
  scroll-margin-top: 80px;
}

.article-page .article-content h1 {
  font-size: 26px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-light);
}

.article-page .article-content h2 {
  font-size: 22px;
  padding-left: 12px;
  border-left: 4px solid var(--primary);
}

.article-page .article-content h3 {
  font-size: 20px;
}

.article-page .article-content h4 {
  font-size: 18px;
}

.article-page .article-content h5 {
  font-size: 16px;
}

.article-page .article-content h6 {
  font-size: 15px;
  color: var(--text-tertiary);
}

.article-page .article-content a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.2s var(--transition);
}

.article-page .article-content a:hover {
  border-bottom-color: var(--primary);
}

.article-page .article-content strong,
.article-page .article-content b {
  font-weight: 700;
  color: var(--text-primary);
}

.article-page .article-content em,
.article-page .article-content i {
  font-style: italic;
}

.article-page .article-content ul,
.article-page .article-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.article-page .article-content ul li,
.article-page .article-content ol li {
  margin: 8px 0;
  line-height: 1.8;
}

.article-page .article-content ul {
  list-style: disc;
}

.article-page .article-content ol {
  list-style: decimal;
}

.article-page .article-content blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--bg-hover);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  font-style: italic;
  color: var(--text-tertiary);
}

.article-page .article-content blockquote p:last-child {
  margin-bottom: 0;
}

.article-page .article-content code {
  padding: 2px 6px;
  background: var(--bg-hover);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  color: var(--danger);
}

.article-page .article-content pre {
  margin: 20px 0;
  padding: 16px 20px;
  background: var(--color-bg-dark-secondary);       /* R14-D2: was #1e293b (code pre) */
  border-radius: var(--radius-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.article-page .article-content pre code {
  padding: 0;
  background: transparent;
  border: none;
  color: #e2e8f0;
  font-size: 14px;
  display: block;
  line-height: 1.6;
}

.article-page .article-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 24px auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.article-page .article-content figure {
  margin: 24px 0;
}

.article-page .article-content figcaption {
  margin-top: 8px;
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
}

.article-page .article-content table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  border-spacing: 0;
  background: var(--bg-white);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.article-page .article-content table thead {
  background: var(--bg-hover);
}

.article-page .article-content table th,
.article-page .article-content table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

.article-page .article-content table th {
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.article-page .article-content table tbody tr:hover {
  background: var(--bg-hover);
}

.article-page .article-content table tbody tr:last-child td {
  border-bottom: none;
}

.article-page .article-content hr {
  margin: 32px 0;
  border: 0;
  border-top: 2px solid var(--border-light);
}

.article-page .article-content video,
.article-page .article-content iframe {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 24px auto;
  border-radius: var(--radius-md);
}

.article-page .article-content iframe {
  aspect-ratio: 16 / 9;
  width: 100%;
  min-height: 300px;
}

.article-page .article-content .video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  margin: 24px 0;
  border-radius: var(--radius-md);
}

.article-page .article-content .video-wrapper iframe,
.article-page .article-content .video-wrapper video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
}

.article-page .article-footer {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.article-page .article-tags {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
}

.article-page .article-tags i {
  color: var(--text-muted);
}

.article-page .article-tags a {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg-hover);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-chip);
  font-size: 13px;
  transition: all 0.2s var(--transition);
}

.article-page .article-tags a:active {
  background: var(--primary);
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.article-page .article-copyright {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.8;
}

.article-page .article-copyright p {
  margin: 8px 0;
}

.article-page .article-copyright strong {
  color: var(--text-primary);
  font-weight: 600;
}

.article-page .article-copyright a {
  color: var(--primary);
  text-decoration: none;
  word-break: break-all;
}

.article-page .article-nav {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.article-page .nav-item {
  display: flex;
  flex-direction: column;
  padding: 16px;
  background: var(--bg-hover);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.2s var(--transition);
  border: 1px solid transparent;
}

.article-page .nav-item:active {
  background: var(--bg-white);
  border-color: var(--primary);
  transform: translateX(2px);
}

.article-page .nav-prev:active {
  transform: translateX(-2px);
}

.article-page .nav-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 600;
  text-transform: uppercase;
}

.article-page .nav-title {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.5;
  font-weight: 500;
}

.article-page .article-related {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.article-page .related-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-light);
  position: relative;
}

.article-page .related-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--primary);
}
.article-page .related-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    align-items: stretch;
}

@media (max-width: 768px) {
    .article-page .related-list {
        grid-template-columns: 1fr;
    }
}

.article-page .related-item {
    margin: 0;
    padding: 0;
    border: none;
}

.article-page .related-link {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.2s var(--transition);
    border: 1px solid transparent;
    height: 100%;
}

.article-page .related-link:hover {
    border-color: var(--border-base);
}

.article-page .related-thumb {
    width: 72px;
    height: 72px;
    flex-shrink: 0;
    border-radius: 14px;
    overflow: hidden;
    background: var(--bg-white);
}

.article-page .related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.article-page .related-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.article-page .related-title {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    margin: 0 0 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-page .related-date {
    font-size: 12px;
    color: var(--text-muted);
}


.article-page .related-link:active {
  background: var(--bg-white);
  border-color: var(--primary);
  transform: scale(0.98);
}

.article-page .related-thumb {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--gradient-info-bg);
}

.article-page .related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.article-page .related-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.article-page .related-item-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin: 0 0 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-page .related-body time {
  font-size: 12px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 374.98px) {
  .news-page .page-header {
    padding: 16px;
  }

  .news-page .page-header .h3 {
    font-size: 20px;
  }

  .news-page .media-body {
    padding: 16px;
  }

  .news-page .news-title {
    font-size: 16px;
  }

  .news-page .news-meta {
    font-size: 12px;
    gap: 8px;
  }

  .news-page .news-excerpt {
    font-size: 13px;
  }

  .news-page .sidebar-block,
  .article-page .sidebar-block {
    padding: 16px;
  }

  .article-page .article-header {
    padding: 20px 16px 16px;
  }

  .article-page .article-title {
    font-size: 22px;
  }

  .article-page .article-meta {
    font-size: 12px;
    gap: 10px;
  }

  .article-page .article-content {
    padding: 24px 16px;
    font-size: 15px;
  }

  .article-page .article-content h1 {
    font-size: 22px;
  }

  .article-page .article-content h2 {
    font-size: 20px;
  }

  .article-page .article-content h3 {
    font-size: 18px;
  }

  .article-page .article-footer {
    padding: 16px;
  }

  .article-page .related-thumb {
    width: 70px;
    height: 70px;
  }

  .article-page .related-item-title {
    font-size: 14px;
  }
}

@media (min-width: 576px) {
  .news-page .container,
  .article-page .container {
    padding: 0 24px;
  }

  .news-page,
  .article-page {
    padding: 24px 0 40px;
  }

  .news-page .news-item {
    margin-bottom: 18px;
  }

  .news-page .news-item .media {
    display: flex;
    padding: 18px;
    gap: 18px;
  }

  .news-page .news-thumb {
    flex-shrink: 0;
    width: 180px;
    height: 135px;
    border-radius: var(--radius-md);
  }

  .news-page .media-body {
    flex: 1;
    padding: 0;
  }

  .news-page .news-title {
    font-size: 18px;
  }

  .news-page .news-excerpt {
    -webkit-line-clamp: 2;
  }

  .article-page .article-header {
    padding: 28px 24px 24px;
  }

  .article-page .article-title {
    font-size: 28px;
  }

  .article-page .article-content {
    padding: 32px 28px;
  }

  .article-page .article-nav {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .article-page .related-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .article-page .related-thumb {
    width: 90px;
    height: 90px;
  }
}

@media (min-width: 768px) {
  .news-page .container,
  .article-page .container {
    max-width: 720px;
  }

  .news-page .news-main,
  .article-page .article-main {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
  }

  .news-page .news-sidebar,
  .article-page .article-sidebar {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    margin-top: 0;
  }

  .news-page,
  .article-page {
    padding: 32px 0 48px;
  }

  .news-page .page-header {
    padding: 24px;
    margin-bottom: 24px;
  }

  .news-page .page-header .h3 {
    font-size: 26px;
  }

  .news-page .page-header p {
    font-size: 15px;
  }

  .news-page .news-item {
    margin-bottom: 20px;
  }

  .news-page .news-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--color-primary-rgb), 0.08);
  }

  .news-page .news-thumb {
    width: 200px;
    height: 145px;
  }

  .news-page .news-title {
    font-size: 19px;
  }

  .news-page .news-meta a:hover {
    color: var(--primary);
  }

  .news-page .sidebar-block li a:hover,
  .article-page .sidebar-block li a:hover {
    color: var(--primary);
  }

  .article-page .article-header {
    padding: 32px 28px 28px;
    margin-bottom: 24px;
  }

  .article-page .article-title {
    font-size: 32px;
    margin-bottom: 20px;
  }

  .article-page .article-meta {
    gap: 16px;
    padding-bottom: 20px;
    margin-bottom: 24px;
  }

  .article-page .article-meta a:hover {
    color: var(--primary);
  }

  .article-page .article-content {
    padding: 36px 32px;
    margin-bottom: 24px;
    font-size: 17px;
  }

  .article-page .article-content h1 {
    font-size: 28px;
  }

  .article-page .article-content h2 {
    font-size: 24px;
  }

  .article-page .article-content h3 {
    font-size: 21px;
  }

  .article-page .article-content h4 {
    font-size: 19px;
  }

  .article-page .article-footer {
    padding: 24px;
    margin-bottom: 24px;
  }

  .article-page .article-tags a:hover {
    background: var(--primary);
    color: var(--color-text-inverse);              /* R14-C4: was white */
  }

  .article-page .nav-item:hover {
    background: var(--bg-white);
    border-color: var(--primary);
    transform: translateX(4px);
  }

  .article-page .nav-prev:hover {
    transform: translateX(-4px);
  }

  .article-page .related-link:hover {
    background: var(--bg-white);
    border-color: var(--primary);
    transform: translateY(-2px);
  }

  .article-page .related-list {
    gap: 20px;
  }
}

@media (min-width: 992px) {
  .news-page .container,
  .article-page .container {
    max-width: 960px;
  }

  .news-page .news-main,
  .article-page .article-main {
    flex: 0 0 70%;
    max-width: 70%;
  }

  .news-page .news-sidebar,
  .article-page .article-sidebar {
    flex: 0 0 30%;
    max-width: 30%;
  }

  .news-page .news-thumb {
    width: 220px;
    height: 155px;
  }

  .news-page .news-title {
    font-size: 20px;
  }

  .article-page .article-title {
    font-size: 34px;
  }

  .article-page .article-content {
    font-size: 18px;
    line-height: 1.85;
  }
}

@media (min-width: 1200px) {
  .news-page .container,
  .article-page .container {
    max-width: 1140px;
  }

  .news-page .news-main,
  .article-page .article-main {
    flex: 0 0 68%;
    max-width: 68%;
  }

  .news-page .news-sidebar,
  .article-page .article-sidebar {
    flex: 0 0 32%;
    max-width: 32%;
  }

  .news-page .news-thumb {
    width: 240px;
    height: 165px;
  }

  .news-page .news-title {
    font-size: 21px;
  }

  .news-page .page-header .h3 {
    font-size: 28px;
  }

  .article-page .article-header {
    padding: 36px 32px 32px;
  }

  .article-page .article-title {
    font-size: 36px;
  }

  .article-page .article-content {
    padding: 40px 36px;
  }
}

.news-page .news-item,
.news-page .sidebar-block,
.article-page .article-header,
.article-page .article-content,
.article-page .article-footer,
.article-page .article-nav,
.article-page .article-related {
  contain: layout style;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.news-page .news-item,
.article-page .nav-item,
.article-page .related-link {
  will-change: transform;
}

@media (min-width: 576px) {
  .news-page .news-thumb img {
    transition: transform 0.3s var(--transition);
  }

  .news-page .news-item:hover .news-thumb img {
    transform: scale(1.05);
  }
}

.news-page .news-meta time,
.article-page .article-meta time,
.article-page .related-body time {
  font-variant-numeric: tabular-nums;
}

.news-page .news-item,
.article-page .article-header,
.article-page .article-content,
.article-page .article-footer {
  backface-visibility: hidden;
}

@supports (-webkit-touch-callout: none) {
  .news-page .news-item,
  .news-page .sidebar-block,
  .article-page .article-header,
  .article-page .article-content,
  .article-page .article-footer,
  .article-page .article-nav,
  .article-page .article-related {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
  }
}

.news-page .news-title a {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (forced-colors: active) {
  .news-page .news-item,
  .news-page .sidebar-block,
  .article-page .article-header,
  .article-page .article-content,
  .article-page .article-footer,
  .article-page .article-nav,
  .article-page .article-related {
    border: 1px solid;
  }
}

.news-page .page-header,
.news-page .news-item,
.news-page .sidebar-block,
.article-page .article-header,
.article-page .article-content,
.article-page .article-footer,
.article-page .article-nav,
.article-page .article-related {
  isolation: isolate;
}

@media (hover: none) and (pointer: coarse) {
  .news-page .news-item:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
  }
}

@media print {
  .news-page .news-sidebar,
  .article-page .article-sidebar {
    display: none;
  }

  .news-page .news-item,
  .article-page .article-content {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  .article-page .article-content a[href]::after {
    content: " (" attr(href) ")";
    font-size: 12px;
    color: var(--text-muted);
  }

  .article-page .article-content pre {
    white-space: pre-wrap;
    word-wrap: break-word;
  }
}

.article-page .article-content::selection {
  background: rgba(var(--color-primary-rgb), 0.15);
}

.article-page .article-content img[loading="lazy"] {
  min-height: 200px;
  background: var(--gradient-info-bg);
}

@media (max-width: 575.98px) {
  .article-page .article-content table {
    font-size: 14px;
  }

  .article-page .article-content table th,
  .article-page .article-content table td {
    padding: 10px 12px;
  }

  .article-page .article-content pre {
    padding: 14px 16px;
    font-size: 13px;
  }

  .article-page .article-content pre code {
    font-size: 13px;
  }
}

.article-page .article-content mark {
  background: #fef08a;
  padding: 2px 4px;
  border-radius: 3px;
}

.article-page .article-content del {
  text-decoration: line-through;
  color: var(--text-muted);
}

.article-page .article-content sup,
.article-page .article-content sub {
  font-size: 0.75em;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

.article-page .article-content sup {
  top: -0.5em;
}

.article-page .article-content sub {
  bottom: -0.25em;
}

.article-page .article-content kbd {
  display: inline-block;
  padding: 3px 6px;
  font-size: 13px;
  line-height: 1;
  color: var(--text-primary);
  background: var(--bg-hover);
  border: 1px solid var(--border-base);
  border-radius: 4px;
  box-shadow: var(--shadow-xs);
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.article-page .article-content abbr[title] {
  border-bottom: 1px dotted var(--text-muted);
  cursor: help;
  text-decoration: none;
}

.article-page .article-content dl {
  margin: 16px 0;
}

.article-page .article-content dt {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.article-page .article-content dd {
  margin: 0 0 12px 20px;
}

.article-page .article-content {
  hyphens: auto;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
}

@media (min-width: 1400px) {
  .news-page .container,
  .article-page .container {
    max-width: 1320px;
  }
}
/* ========================================
   通用常见问题faq样式
======================================== */
.faq-page,
.faq-detail-page {
  background: var(--bg-page);
  padding: 20px 0 40px;
  min-height: 50vh;
}

.faq-page .container,
.faq-detail-page .container {
  width: 100%;
  padding: 0 16px;
  margin: 0 auto;
}

.faq-page .row,
.faq-detail-page .row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -16px;
}

.faq-page .faq-main,
.faq-detail-page .faq-detail-main {
  width: 100%;
  padding: 0 16px;
}

.faq-page .faq-sidebar,
.faq-detail-page .faq-sidebar {
  width: 100%;
  padding: 0 16px;
  margin-top: 32px;
}

.faq-page .faq-category-nav,
.faq-detail-page .faq-category-nav {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--border-light);
}

.faq-page .category-nav-header,
.faq-detail-page .category-nav-header {
  margin-bottom: 16px;
}

.faq-page .category-nav-title,
.faq-detail-page .category-nav-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
}

.faq-page .category-nav-title::before,
.faq-detail-page .category-nav-title::before {
  content: '';
  width: 3px;
  height: 16px;
  background: var(--gradient-primary-theme);
  border-radius: 2px;
}

.faq-page .category-nav-content,
.faq-detail-page .category-nav-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-page .category-nav-item,
.faq-detail-page .category-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-page);
  border: 1.5px solid var(--border-base);
  border-radius: var(--radius-card);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  transition: all 0.25s var(--transition);
  position: relative;
  letter-spacing: -0.01em;
  min-height: 52px;
}

.faq-page .category-nav-item:active,
.faq-detail-page .category-nav-item:active {
  transform: scale(0.98);
}

.faq-page .category-nav-item.active,
.faq-detail-page .category-nav-item.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  box-shadow: var(--shadow-primary);
}

.faq-page .category-nav-name,
.faq-detail-page .category-nav-name {
  position: relative;
  z-index: 1;
  flex: 1;
}

.faq-page .category-nav-count,
.faq-detail-page .category-nav-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 10px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  font-size: 13px;
  font-weight: 600;
  position: relative;
  z-index: 1;
}

.faq-page .category-nav-item.active .category-nav-count,
.faq-detail-page .category-nav-item.active .category-nav-count {
  background: rgba(255, 255, 255, 0.25);
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.faq-page .faq-header {
  background: var(--gradient-primary-theme);
  border-radius: var(--radius-card);
  padding: 36px 24px;
  margin-bottom: 24px;
  text-align: center;
  box-shadow: var(--shadow-glow-primary);
  position: relative;
  overflow: hidden;
}

.faq-page .faq-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: var(--gradient-radial-white-08);
  border-radius: 50%;
}

.faq-page .faq-header::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -8%;
  width: 300px;
  height: 300px;
  background: var(--gradient-radial-white-05);
  border-radius: 50%;
}

.faq-page .faq-page-title {
  font-size: 26px;
  font-weight: 600;
  color: var(--color-text-inverse);              /* R14-C4: was white */
  margin: 0 0 12px;
  position: relative;
  z-index: 1;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.faq-page .faq-page-desc {
  font-size: 15px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.92);
  margin: 0;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.faq-page .faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-page .faq-item {
  background: var(--bg-white);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--border-light);
  transition: all 0.3s var(--transition);
}

.faq-page .faq-item:active {
  transform: scale(0.99);
}

.faq-page .faq-item.active {
  box-shadow: var(--shadow-card);
  border-color: rgba(var(--color-primary-rgb), 0.2);
}

.faq-page .faq-question {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 16px;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: all 0.25s var(--transition);
  font-family: inherit;
  position: relative;
}

.faq-page .faq-question::before {
  content: 'Q';
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary-soft);
  color: var(--primary);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid rgba(var(--color-primary-rgb), 0.2);
  transition: all 0.3s var(--transition);
  margin-top: 2px;
}

.faq-page .faq-item.active .faq-question::before {
  background: var(--gradient-primary-theme);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  border-color: var(--primary);
}

.faq-page .faq-question-text {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  padding-right: 12px;
  letter-spacing: -0.01em;
}

.faq-page .faq-toggle {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-page);
  border-radius: 50%;
  transition: all 0.3s var(--transition);
  position: relative;
  margin-top: 2px;
}

.faq-page .faq-item.active .faq-question .faq-toggle {
  background: rgba(var(--color-primary-rgb), 0.1);
  transform: rotate(180deg);
}

.faq-page .faq-icon-plus,
.faq-page .faq-icon-minus {
  position: absolute;
  font-size: 13px;
  color: var(--text-tertiary);
  transition: all 0.3s var(--transition);
}

.faq-page .faq-item.active .faq-question .faq-icon-plus,
.faq-page .faq-item.active .faq-question .faq-icon-minus {
  color: var(--primary);
}

.faq-page .faq-icon-minus {
  opacity: 0;
  transform: rotate(-90deg);
}

.faq-page .faq-item.active .faq-question .faq-icon-plus {
  opacity: 0;
  transform: rotate(90deg);
}

.faq-page .faq-item.active .faq-question .faq-icon-minus {
  opacity: 1;
  transform: rotate(0deg);
}

.faq-page .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--transition);
}

.faq-page .faq-item.active .faq-answer {
  max-height: 3000px;
  background: rgba(248, 250, 252, 0.5);
  border-top: 1px solid var(--border-light);
}

.faq-page .faq-answer-content {
  padding: 20px 16px 24px 60px;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.8;
  color: var(--text-secondary);
}

.faq-page .faq-answer-content > *:first-child {
  margin-top: 0;
}

.faq-page .faq-answer-content > *:last-child {
  margin-bottom: 0;
}

.faq-page .faq-answer-content p {
  margin: 0 0 18px;
}

.faq-page .faq-answer-content h1,
.faq-page .faq-answer-content h2,
.faq-page .faq-answer-content h3,
.faq-page .faq-answer-content h4,
.faq-page .faq-answer-content h5,
.faq-page .faq-answer-content h6 {
  font-weight: 600;
  color: var(--text-primary);
  margin: 24px 0 12px;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.faq-page .faq-answer-content h3 {
  font-size: 16px;
  margin-top: 20px;
}

.faq-page .faq-answer-content h4 {
  font-size: 15px;
  margin-top: 18px;
}

.faq-page .faq-answer-content ul,
.faq-page .faq-answer-content ol {
  margin: 18px 0;
  padding-left: 20px;
}

.faq-page .faq-answer-content li {
  margin: 12px 0;
  line-height: 1.75;
}

.faq-page .faq-answer-content ul li {
  padding-left: 6px;
}

.faq-page .faq-answer-content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.faq-page .faq-answer-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-image);
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}

.faq-page .faq-answer-content a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--transition);
}

.faq-page .faq-answer-content a:active {
  border-bottom-color: var(--primary);
}

.faq-page a.faq-detail-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  margin-top: 16px;
  background: var(--primary);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  text-decoration: none;
  border-radius: var(--radius-chip);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s var(--transition);
  border: none;
}

.faq-page a.faq-detail-link:active {
  transform: scale(0.96);
  border-bottom-color: transparent;
}

.faq-page a.faq-detail-link i {
  font-size: 12px;
}

.faq-page .faq-navigation {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-top: 24px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--border-light);
}

.faq-page .faq-nav-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
}

.faq-page .faq-nav-title::before {
  content: '';
  width: 3px;
  height: 18px;
  background: var(--gradient-primary-theme);
  border-radius: 2px;
}

.faq-page .faq-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-page .faq-nav-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-page);
  border-radius: var(--radius-card);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  transition: all 0.25s var(--transition);
  border: 1px solid transparent;
  letter-spacing: -0.01em;
  min-height: 48px;
}

.faq-page .faq-nav-item a i {
  color: var(--text-muted);
  font-size: 14px;
  flex-shrink: 0;
}

.faq-page .faq-nav-item a span:nth-child(2) {
  flex: 1;
}

.faq-page .faq-nav-item a .nav-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 26px;
  padding: 0 8px;
  background: rgba(var(--color-primary-rgb), 0.08);
  color: var(--primary);
  border-radius: 13px;
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
}

.faq-page .faq-nav-item a:active {
  transform: scale(0.98);
}

.faq-page .faq-sidebar-block,
.faq-detail-page .faq-sidebar-block {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--border-light);
}

.faq-page .faq-sidebar-title,
.faq-detail-page .faq-sidebar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
}

.faq-page .faq-sidebar-title::before,
.faq-detail-page .faq-sidebar-title::before {
  content: '';
  width: 3px;
  height: 18px;
  background: var(--gradient-primary-theme);
  border-radius: 2px;
}

.faq-page .faq-sidebar-list,
.faq-detail-page .faq-sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.faq-page .faq-sidebar-item,
.faq-detail-page .faq-sidebar-item {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-light);
}

.faq-page .faq-sidebar-item:last-child,
.faq-detail-page .faq-sidebar-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.faq-page .faq-sidebar-item a,
.faq-detail-page .faq-sidebar-item a {
  display: block;
  text-decoration: none;
  transition: all 0.2s var(--transition);
}

.faq-page .faq-sidebar-link-text,
.faq-detail-page .faq-sidebar-link-text {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-secondary);
  display: block;
}

.faq-page .faq-sidebar-item a:active .faq-sidebar-link-text,
.faq-detail-page .faq-sidebar-item a:active .faq-sidebar-link-text {
  color: var(--primary);
}

.faq-page .faq-sidebar-date,
.faq-detail-page .faq-sidebar-date {
  font-size: 12px;
  font-weight: 400;
  color: var(--text-muted);
  margin-top: 6px;
  display: block;
  font-variant-numeric: tabular-nums;
}

.faq-page .faq-sidebar-list-ordered,
.faq-detail-page .faq-sidebar-list-ordered {
  counter-reset: faq-rank;
}

.faq-page .faq-sidebar-list-ordered .faq-sidebar-item,
.faq-detail-page .faq-sidebar-list-ordered .faq-sidebar-item {
  counter-increment: faq-rank;
  padding-left: 36px;
  position: relative;
}

.faq-page .faq-sidebar-list-ordered .faq-sidebar-item::before,
.faq-detail-page .faq-sidebar-list-ordered .faq-sidebar-item::before {
  content: counter(faq-rank);
  position: absolute;
  left: 0;
  top: 0;
  width: 26px;
  height: 26px;
  line-height: 26px;
  text-align: center;
  font-size: 12px;
  font-weight: 600;
  border-radius: 8px;
  background: var(--bg-page);
  color: var(--text-muted);
}

.faq-page .faq-sidebar-list-ordered .faq-sidebar-item:nth-child(1)::before,
.faq-detail-page .faq-sidebar-list-ordered .faq-sidebar-item:nth-child(1)::before {
  background: var(--gradient-danger);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.25);
}

.faq-page .faq-sidebar-list-ordered .faq-sidebar-item:nth-child(2)::before,
.faq-detail-page .faq-sidebar-list-ordered .faq-sidebar-item:nth-child(2)::before {
  background: var(--gradient-warning);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
}

.faq-page .faq-sidebar-list-ordered .faq-sidebar-item:nth-child(3)::before,
.faq-detail-page .faq-sidebar-list-ordered .faq-sidebar-item:nth-child(3)::before {
  background: var(--gradient-info);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.25);
}

.faq-page .faq-help-block,
.faq-detail-page .faq-help-block {
  background: var(--gradient-info-bg);
  border: 1px solid rgba(var(--color-primary-rgb), 0.12);
  text-align: center;
}

.faq-page .faq-help-text,
.faq-detail-page .faq-help-text {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0 0 18px;
}

.faq-page .faq-contact-btn,
.faq-detail-page .faq-contact-btn {
  display: inline-block;
  padding: 11px 26px;
  background: var(--primary);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  text-decoration: none;
  border-radius: var(--radius-btn-lg);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.25s var(--transition);
  letter-spacing: -0.01em;
  min-height: 44px;
  line-height: 22px;
}

.faq-page .faq-contact-btn:active,
.faq-detail-page .faq-contact-btn:active {
  transform: scale(0.96);
}

.faq-detail-page .faq-detail-breadcrumb {
  margin-bottom: 0;
  display: none;
}

.faq-detail-page .faq-back-floating {
  position: fixed;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  animation: fadeInLeft 0.3s ease;
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateY(-50%) translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
}

.faq-detail-page .faq-back-floating .back-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--bg-white);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 50%;
  font-size: 18px;
  box-shadow: var(--shadow-float);
  border: 1px solid var(--border-light);
  transition: all 0.25s var(--transition);
}

.faq-detail-page .faq-back-floating .back-btn:active {
  transform: scale(0.9);
  box-shadow: var(--shadow-sm);
}

.faq-detail-page .faq-back-floating .back-btn i {
  transition: transform 0.25s var(--transition);
}

.faq-detail-page .faq-back-floating .back-btn:active i {
  transform: translateX(-2px);
}

.faq-detail-page .faq-detail-header {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--border-light);
}

.faq-detail-page .faq-detail-title {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-text);                        /* R14-P: was var(--text-primary), 去桥接直取主题 */
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--color-primary);     /* R14-P: was var(--primary), 去桥接直取主题 */
  letter-spacing: -0.02em;
}

.faq-detail-page .faq-detail-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-tertiary);
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border-light);
}

.faq-detail-page .faq-detail-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.faq-detail-page .faq-detail-meta i {
  font-size: 13px;
}

.faq-detail-page .faq-detail-meta a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s var(--transition);
}

.faq-detail-page .faq-detail-meta a:active {
  color: var(--primary);
}

.faq-detail-page .faq-answer-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  background: var(--gradient-success);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  border-radius: var(--radius-chip);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  box-shadow: 0 2px 12px rgba(16, 185, 129, 0.25);
}

.faq-detail-page .faq-answer-badge i {
  font-size: 15px;
}

.faq-detail-page .faq-detail-content {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.85;
  color: var(--text-secondary);
  padding: 0 4px;
}

.faq-detail-page .faq-detail-content > *:first-child {
  margin-top: 0;
}

.faq-detail-page .faq-detail-content > *:last-child {
  margin-bottom: 0;
}

.faq-detail-page .faq-detail-content p {
  margin: 0 0 20px;
}

.faq-detail-page .faq-detail-content h1,
.faq-detail-page .faq-detail-content h2,
.faq-detail-page .faq-detail-content h3,
.faq-detail-page .faq-detail-content h4,
.faq-detail-page .faq-detail-content h5,
.faq-detail-page .faq-detail-content h6 {
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-text);                    /* R14-P: was var(--text-primary), 去桥接直取主题 */
  margin: 28px 0 16px;
  letter-spacing: -0.01em;
}

.faq-detail-page .faq-detail-content h2 {
  font-size: 20px;
  padding-left: 14px;
  border-left: 4px solid var(--color-primary); /* R14-P: was var(--primary), 去桥接直取主题 */
}

.faq-detail-page .faq-detail-content h3 {
  font-size: 18px;
}

.faq-detail-page .faq-detail-content h4 {
  font-size: 17px;
}

.faq-detail-page .faq-detail-content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.faq-detail-page .faq-detail-content ul,
.faq-detail-page .faq-detail-content ol {
  margin: 20px 0;
  padding-left: 20px;
}

.faq-detail-page .faq-detail-content li {
  margin: 12px 0;
  line-height: 1.8;
}

.faq-detail-page .faq-detail-content ul li {
  padding-left: 6px;
}

.faq-detail-page .faq-detail-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 24px auto;
  border-radius: var(--radius-image);
  box-shadow: var(--shadow-sm);
}

.faq-detail-page .faq-detail-content a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.2s var(--transition);
}

.faq-detail-page .faq-detail-content a:active {
  border-bottom-color: var(--primary);
}

.faq-detail-page .faq-detail-content blockquote {
  margin: 24px 0;
  padding: 18px 18px;
  background: rgba(6, 182, 212, 0.05);
  border-left: 4px solid var(--info);
  border-radius: var(--radius-card);
  color: var(--text-tertiary);
  font-weight: 400;
  line-height: 1.75;
}

.faq-detail-page .faq-detail-content code {
  padding: 3px 8px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-radius: 6px;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 14px;
  color: var(--danger);
  font-weight: 500;
}

.faq-detail-page .faq-detail-content pre {
  margin: 24px -4px;
  padding: 18px;
  background: var(--color-bg-dark-secondary);       /* R14-D2: was #1e293b (code pre) */
  border-radius: var(--radius-card);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

.faq-detail-page .faq-detail-content pre code {
  padding: 0;
  background: transparent;
  border: none;
  color: #e2e8f0;
  display: block;
  font-weight: 400;
}

.faq-detail-page .faq-detail-footer {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--border-light);
}

.faq-detail-page .faq-helpful {
  text-align: center;
}

.faq-detail-page .helpful-question {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}

.faq-detail-page .helpful-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.faq-detail-page .helpful-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  background: var(--bg-page);
  color: var(--text-secondary);
  border: 1.5px solid var(--border-base);
  border-radius: var(--radius-btn-lg);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s var(--transition);
  font-family: inherit;
  letter-spacing: -0.01em;
  min-height: 44px;
}

.faq-detail-page .helpful-yes:active {
  background: #10b981;
  color: var(--color-text-inverse);              /* R14-C4: was white */
  border-color: #10b981;
  transform: scale(0.96);
}

.faq-detail-page .helpful-no:active {
  background: #ef4444;
  color: var(--color-text-inverse);              /* R14-C4: was white */
  border-color: #ef4444;
  transform: scale(0.96);
}

.faq-detail-page .faq-related {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--border-light);
}

.faq-detail-page .related-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.01em;
}

.faq-detail-page .related-title::before {
  content: '';
  width: 3px;
  height: 20px;
  background: var(--gradient-primary-theme);
  border-radius: 2px;
}

.faq-detail-page .faq-related-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.faq-detail-page .faq-related-item {
  margin-bottom: 12px;
  padding-bottom: 0;
  border-bottom: none;
}

.faq-detail-page .faq-related-item:last-child {
  margin-bottom: 0;
}

.faq-detail-page .faq-related-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--bg-page);
  border-radius: var(--radius-card);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.25s var(--transition);
  border: 1px solid transparent;
  min-height: 64px;
}

.faq-detail-page .faq-related-link:active {
  transform: scale(0.98);
  border-color: var(--primary);
}

.faq-detail-page .related-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  border-radius: 50%;
  color: var(--primary);
  font-size: 16px;
  border: 1.5px solid rgba(var(--color-primary-rgb), 0.15);
  transition: all 0.25s var(--transition);
}

.faq-detail-page .related-text {
  flex: 1;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

.faq-detail-page .related-arrow {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.faq-detail-page .faq-detail-nav {
  background: var(--bg-white);
  border-radius: var(--radius-card);
  padding: 16px;
  margin-bottom: 80px;
  box-shadow: var(--shadow-xs);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-detail-page .nav-item {
  display: flex;
  flex-direction: column;
  padding: 16px;
  background: var(--bg-page);
  border-radius: var(--radius-card);
  text-decoration: none;
  transition: all 0.25s var(--transition);
  border: 1px solid transparent;
  min-height: 68px;
}

.faq-detail-page .nav-item:active {
  transform: scale(0.98);
  border-color: var(--primary);
}

.faq-detail-page .nav-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.faq-detail-page .nav-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.5;
  letter-spacing: -0.01em;
}

@media (min-width: 576px) {
  .faq-page .container,
  .faq-detail-page .container {
    padding: 0 24px;
  }

  .faq-page,
  .faq-detail-page {
    padding: 28px 0 48px;
  }

  .faq-page .faq-header {
    padding: 48px 32px;
  }

  .faq-page .faq-page-title {
    font-size: 30px;
  }

  .faq-page .category-nav-content,
  .faq-detail-page .category-nav-content {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .faq-page .category-nav-item,
  .faq-detail-page .category-nav-item {
    width: auto;
    flex: 0 0 auto;
  }

  .faq-page .faq-nav-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .faq-detail-page .faq-detail-nav {
    flex-direction: row;
    gap: 16px;
  }

  .faq-detail-page .faq-detail-nav .nav-item {
    flex: 1;
  }

  .faq-detail-page .faq-back-floating {
    left: 24px;
  }
}

@media (min-width: 768px) {
  .faq-page .container,
  .faq-detail-page .container {
    max-width: 720px;
  }

  .faq-page .faq-main,
  .faq-detail-page .faq-detail-main {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
  }

  .faq-page .faq-sidebar,
  .faq-detail-page .faq-sidebar {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    margin-top: 0;
  }

  .faq-page,
  .faq-detail-page {
    padding: 36px 0 56px;
  }

  .faq-page .faq-header {
    padding: 56px 40px;
  }

  .faq-page .faq-page-title {
    font-size: 36px;
  }

  .faq-page .faq-page-desc {
    font-size: 18px;
  }

  .faq-page .faq-list {
    gap: 16px;
  }

  .faq-page .faq-item {
    border-radius: var(--radius-card);
  }

  .faq-page .faq-question {
    padding: 24px;
    gap: 16px;
  }

  .faq-page .faq-question::before {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }

  .faq-page .faq-question-text {
    font-size: 18px;
  }

  .faq-page .faq-toggle {
    width: 32px;
    height: 32px;
  }

  .faq-page .faq-answer-content {
    font-size: 16px;
    padding: 28px 28px 32px 84px;
  }

  .faq-page .faq-item:hover {
    box-shadow: var(--shadow-card);
    border-color: rgba(var(--color-primary-rgb), 0.15);
  }

  .faq-page .faq-question:hover::before {
    background: var(--gradient-primary-soft-hover);
    border-color: rgba(var(--color-primary-rgb), 0.35);
    transform: scale(1.05);
  }

  .faq-page .faq-question:hover .faq-toggle {
    background: rgba(var(--color-primary-rgb), 0.1);
  }

  .faq-page .category-nav-item:hover,
  .faq-detail-page .category-nav-item:hover {
    transform: translateY(-1px);
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(var(--color-primary-rgb), 0.03);
    box-shadow: var(--shadow-glow-primary);
  }

  .faq-page .category-nav-item.active:hover,
  .faq-detail-page .category-nav-item.active:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
  }

  .faq-page a.faq-detail-link:hover {
    background: var(--color-primary-active);
    transform: translateX(2px);
    box-shadow: var(--shadow-primary);
  }

  .faq-page .faq-nav-item a:hover {
    background: var(--color-bg-primary);              /* R14-D1: was white */
    border-color: var(--primary);
    color: var(--primary);
    transform: translateX(3px);
    box-shadow: var(--shadow-xs);
  }

  .faq-page .faq-nav-item a:hover i {
    color: var(--primary);
  }

  .faq-page .faq-sidebar-item a:hover .faq-sidebar-link-text,
  .faq-detail-page .faq-sidebar-item a:hover .faq-sidebar-link-text {
    color: var(--primary);
  }

  .faq-page .faq-contact-btn:hover,
  .faq-detail-page .faq-contact-btn:hover {
    background: var(--color-primary-active);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
  }

  .faq-detail-page .faq-detail-breadcrumb {
    display: block;
    margin-bottom: 24px;
  }

  .faq-detail-page .breadcrumb-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--bg-white);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-chip);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.25s var(--transition);
    border: 1px solid var(--border-light);
    letter-spacing: -0.01em;
  }

  .faq-detail-page .breadcrumb-link:hover {
    background: var(--primary);
    color: var(--color-text-inverse);              /* R14-C4: was white */
    border-color: var(--primary);
    transform: translateX(-2px);
    box-shadow: var(--shadow-glow-primary);
  }

  .faq-detail-page .faq-back-floating {
    display: none;
  }

  .faq-detail-page .faq-detail-header {
    padding: 36px 32px;
    border-radius: var(--radius-card);
  }

  .faq-detail-page .faq-detail-title {
    font-size: 30px;
    padding-left: 20px;
  }

  .faq-detail-page .faq-detail-content {
    font-size: 17px;
  }

  .faq-detail-page .faq-detail-nav {
    margin-bottom: 24px;
  }

  .faq-detail-page .nav-item:hover {
    background: var(--color-bg-primary);              /* R14-D1: was white */
    border-color: var(--primary);
    transform: translateX(3px);
    box-shadow: var(--shadow-sm);
  }

  .faq-detail-page .nav-prev:hover {
    transform: translateX(-3px);
  }

  .faq-detail-page .faq-related-link:hover {
    background: var(--color-bg-primary);              /* R14-D1: was white */
    border-color: var(--primary);
    color: var(--primary);
    transform: translateX(3px);
    box-shadow: var(--shadow-sm);
  }

  .faq-detail-page .faq-related-link:hover .related-icon {
    background: var(--primary);
    color: var(--color-text-inverse);              /* R14-C4: was white */
    border-color: var(--primary);
    transform: scale(1.05);
  }

  .faq-detail-page .faq-related-link:hover .related-arrow {
    transform: translateX(2px);
  }

  .faq-detail-page .helpful-yes:hover {
    background: #10b981;
    color: var(--color-text-inverse);              /* R14-C4: was white */
    border-color: #10b981;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
  }

  .faq-detail-page .helpful-no:hover {
    background: #ef4444;
    color: var(--color-text-inverse);              /* R14-C4: was white */
    border-color: #ef4444;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
  }
}

@media (min-width: 992px) {
  .faq-page .container,
  .faq-detail-page .container {
    max-width: 960px;
  }

  .faq-page .faq-main,
  .faq-detail-page .faq-detail-main {
    flex: 0 0 70%;
    max-width: 70%;
  }

  .faq-page .faq-sidebar,
  .faq-detail-page .faq-sidebar {
    flex: 0 0 30%;
    max-width: 30%;
  }

  .faq-page .faq-nav-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .faq-detail-page .faq-detail-title {
    font-size: 32px;
  }
}

@media (min-width: 1200px) {
  .faq-page .container,
  .faq-detail-page .container {
    max-width: 1140px;
  }

  .faq-page .faq-main,
  .faq-detail-page .faq-detail-main {
    flex: 0 0 68%;
    max-width: 68%;
  }

  .faq-page .faq-sidebar,
  .faq-detail-page .faq-sidebar {
    flex: 0 0 32%;
    max-width: 32%;
  }

  .faq-page .faq-page-title {
    font-size: 40px;
  }

  .faq-page .faq-nav-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .faq-detail-page .faq-detail-title {
    font-size: 34px;
  }
}

.faq-page .faq-item,
.faq-page .faq-header,
.faq-page .faq-navigation,
.faq-page .faq-category-nav,
.faq-detail-page .faq-detail-header,
.faq-detail-page .faq-detail-footer,
.faq-detail-page .faq-related,
.faq-detail-page .faq-detail-nav,
.faq-detail-page .faq-category-nav {
  contain: layout style;
}

@media (prefers-reduced-motion: reduce) {
  .faq-page .faq-question,
  .faq-page .faq-toggle,
  .faq-page .faq-answer,
  .faq-detail-page .nav-item,
  .faq-detail-page .faq-back-floating {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

.faq-page .faq-question,
.faq-page .category-nav-item,
.faq-detail-page .nav-item,
.faq-detail-page .faq-related-link,
.faq-detail-page .category-nav-item,
.faq-detail-page .faq-back-floating .back-btn {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.faq-page .faq-question:focus-visible,
.faq-page .category-nav-item:focus-visible,
.faq-detail-page .nav-item:focus-visible,
.faq-detail-page .faq-related-link:focus-visible,
.faq-detail-page .category-nav-item:focus-visible,
.faq-detail-page .faq-back-floating .back-btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.faq-page .faq-header,
.faq-page .faq-list,
.faq-detail-page .faq-detail-header {
  backface-visibility: hidden;
}

@supports (-webkit-touch-callout: none) {
  .faq-page .faq-item,
  .faq-detail-page .faq-detail-header,
  .faq-detail-page .faq-related {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
  }
}

@media (forced-colors: active) {
  .faq-page .faq-list,
  .faq-page .faq-navigation,
  .faq-detail-page .faq-detail-header,
  .faq-detail-page .faq-related {
    border: 1px solid;
  }
}

.faq-page .faq-header,
.faq-page .faq-list,
.faq-page .faq-navigation,
.faq-page .faq-category-nav,
.faq-detail-page .faq-detail-header,
.faq-detail-page .faq-detail-footer,
.faq-detail-page .faq-related,
.faq-detail-page .faq-detail-nav,
.faq-detail-page .faq-category-nav {
  isolation: isolate;
}

@media print {
  .faq-page .faq-sidebar,
  .faq-detail-page .faq-sidebar,
  .faq-page .faq-category-nav,
  .faq-detail-page .faq-category-nav,
  .faq-detail-page .faq-back-floating {
    display: none;
  }

  .faq-page .faq-answer {
    max-height: none !important;
  }

  .faq-page .faq-question {
    page-break-inside: avoid;
  }

  .faq-detail-page .faq-detail-content {
    page-break-inside: avoid;
  }
}

@media (min-width: 1400px) {
  .faq-page .container,
  .faq-detail-page .container {
    max-width: 1320px;
  }
}
/* ========================================
   通用关于我们公司简介样式
======================================== */
/* ========================================
   关于我们页面样式 - 优化版
   ======================================== */

/* 基础变量 */
:root {
  /* R14-C1 bridge: 绿/黄灯项 → theme-aware tokens.base token */
  --primary: var(--color-primary);                       /* was #2563eb */
  /* R14-C1c: --primary-dark 定义已删除（C1b 消费侧全部去中介化） */
  --primary-light: var(--color-primary-light);           /* was #3b82f6 */
  --bg-page: var(--color-bg);                            /* was #f8fafc */
  --bg-white: var(--card-bg-elevated);                   /* R14-Q: was #ffffff 硬码 */
  /* R14-Q (2026-04-22): γ-literal 全部改用 theme-aware token, 修复"白卡黑字"在深色主题反转不可见 */
  --text-primary: var(--color-text);                     /* R14-Q: was #0f172a 硬码 */
  --text-secondary: var(--color-text-secondary);         /* R14-Q: was #475569 硬码 */
  --text-muted: var(--color-text-muted);                 /* R14-Q: was #94a3b8 硬码 */
  --border-light: var(--color-border-light);             /* R14-Q: was #e2e8f0 硬码 */
  --border-medium: var(--color-border-dark);             /* R14-Q: was #cbd5e1 硬码 */
  /* R14-E: 非颜色 vars 统一源头（shadow keep-raw / transition + radius 部分 bridge） */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);                 /* γ-literal: aoyun 单层结构 ≠ tokens.base 双层叠加，保 literal */
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);                 /* γ-literal: 同上 */
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);                /* γ-literal: 同上 */
  --transition: var(--easing-in-out);                          /* R14-E: was cubic-bezier(0.4, 0, 0.2, 1)，bridge 到 tokens.base --easing-in-out (Δ 0) */
  --radius-sm: var(--radius-lg);                               /* R14-E: was 8px，bridge 到 tokens.base --radius-lg (=8px, Δ 0) */
  --radius-md: var(--radius-xl);                               /* R14-E: was 12px，bridge 到 tokens.base --radius-xl (=12px, Δ 0) */
  --radius-lg: var(--radius-2xl);                              /* R14-E: was 16px，bridge 到 tokens.base --radius-2xl (=16px, Δ 0) */
  --radius-xl: 20px;                                           /* γ-literal: 无 20px 精确 token（tokens.base 跳 12→16→24），保 literal */
}

/* 辅助类 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* 页面容器 */
.about-page {
  background: var(--bg-page);
  padding: 20px 0 48px;
  min-height: 100vh;
}

/* ========================================
   页面头部
   ======================================== */
.about-header {
  background: var(--gradient-hero-primary);
  border-radius: var(--radius-hero);
  padding: 0;
  margin-bottom: 32px;
  box-shadow: var(--shadow-primary-lg);
  position: relative;
  overflow: hidden;
}

.about-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: var(--gradient-radial-white-05);
  border-radius: 50%;
  animation: float 20s ease-in-out infinite;
}

.about-header::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -15%;
  width: 500px;
  height: 500px;
  background: var(--gradient-radial-white-03);
  border-radius: 50%;
  animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(30px, -30px) scale(1.1);
  }
}

.about-header-content {
  position: relative;
  z-index: 1;
  padding: 56px 32px;
  text-align: center;
}

.about-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text-inverse);              /* R14-C4: was white */
  margin: 0 0 28px;
  letter-spacing: -0.02em;
  line-height: 1.3;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.about-subtitle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.subtitle-line {
  width: 60px;
  height: 2px;
  background: var(--gradient-shimmer-white);
}

.subtitle-text {
  font-size: 16px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  letter-spacing: 0.02em;
  margin: 0;
}

/* ========================================
   布局结构
   ======================================== */
.about-page .row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -16px;
}

.about-main {
  width: 100%;
  padding: 0 16px;
}

.about-sidebar {
  width: 100%;
  padding: 0 16px;
  margin-top: 32px;
}

/* ========================================
   通用卡片样式
   ======================================== */
.about-content-section,
.about-gallery-section,
.about-advantages-section,
.company-info-card,
.qrcode-card,
.contact-cta-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

/* 统一标题样式 */
.section-title,
.card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.section-title .title-icon,
.card-title .title-icon {
  width: 4px;
  height: 24px;
  background: var(--gradient-primary-theme);
  border-radius: 2px;
  flex-shrink: 0;
}

/* ========================================
   关于内容区
   ======================================== */
.about-content {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.85;
  color: var(--text-secondary);
}

.about-content > *:first-child {
  margin-top: 0;
}

.about-content > *:last-child {
  margin-bottom: 0;
}

.about-content p {
  margin: 0 0 20px;
}

.about-content h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 32px 0 16px;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  letter-spacing: -0.01em;
}

.about-content h3 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 28px 0 14px;
  letter-spacing: -0.01em;
}

.about-content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.about-content ul,
.about-content ol {
  margin: 20px 0;
  padding-left: 24px;
}

.about-content li {
  margin: 12px 0;
  line-height: 1.8;
}

.about-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 24px auto;
  display: block;
  box-shadow: var(--shadow-sm);
}

/* ========================================
   品牌展示
   ======================================== */
.gallery-wrapper {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--bg-page);
  padding: 16px 0;
}

.gallery-container {
  display: flex;
  animation: galleryScroll 40s linear infinite;
  gap: 16px;
  padding: 0 8px;
}

.gallery-container:hover {
  animation-play-state: paused;
}

@keyframes galleryScroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(calc(-50% - 8px));
  }
}

.gallery-item {
  flex-shrink: 0;
  width: 260px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s var(--transition);
  margin: 0;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.gallery-item img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.gallery-caption {
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.5;
}

/* ========================================
   核心优势
   ======================================== */
.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.advantage-card {
  padding: 24px 20px;
  background: var(--bg-page);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  transition: all 0.3s var(--transition);
}

.advantage-card:active {
  transform: scale(0.98);
}

.advantage-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary-theme);
  border-radius: 50%;
  margin-bottom: 16px;
  box-shadow: var(--shadow-glow-primary);
}

.advantage-icon i {
  font-size: 22px;
  color: var(--color-text-inverse);              /* R14-C4: was white */
}

.advantage-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.advantage-desc {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0;
}

/* ========================================
   联系信息
   ======================================== */
.index-certification {
    padding: 40px 0;
    /* R14-S: 本区块只在 index.html 的 .index-page 作用域里使用;
       .index-page .index-certification (0,2,1) 会用 --ip-bg-light 覆盖掉 --color-bg-dark,
       所以这里的 bg 仅作 fallback. 但旧版 color: #e0e0e0 会被子元素继承, 深色浅色都会跑偏 —
       改用 theme-aware --color-text (始终与当前主题 bg 对比) */
    background-color: var(--color-bg-dark);       /* R14-D4: was #1a1a1a (section) */
    color: var(--color-text);                     /* R14-S: was #e0e0e0 */
}

.container {
    width: 90%;
    max-width: 1140px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 15px;
    padding-right: 15px;
}

.certification-content {
    /* No specific styles needed */
}

.certification-title {
    font-size: 1.75rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 30px;
    /* R14-S: 这区块只出现在 .index-page 里, bg 被 --ip-bg-light 覆盖成 theme-aware 浅底;
       原 --color-text-inverse 是给"浅色强调底"做反色, 在多数主题里计算成近白 —
       放在 light theme 的浅底上就彻底消失. 改用 --color-text (理论上永远和当前主题 bg 对比) */
    color: var(--color-text);                    /* R14-S: was var(--color-text-inverse) */
}

.certification-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.certification-info .info-item {
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border); /* R14-S: was #444 (只适合深底) */
}

.certification-info .info-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.certification-info .info-item h3 {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    text-align: left;
    width: auto;
    height: auto;
    margin: 0 0 12px 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);                    /* R14-S: was var(--color-text-inverse) */
}

.certification-info .info-item p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-text-secondary);          /* R14-S: was #c0c0c0 (浅灰只适合深底) */
    margin: 8px 0;
}

.certification-info .info-item p strong {
    font-weight: 600;
    color: var(--color-text);                    /* R14-S: was #e0e0e0 */
}

/* ========================================
   二维码卡片
   ======================================== */
.qrcode-wrapper {
  text-align: center;
}

.qrcode-wrapper img {
  width: 100%;
  max-width: 180px;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 12px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  margin: 0 auto 14px;
  display: block;
}

.qrcode-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

/* ========================================
   在线咨询
   ======================================== */
.contact-cta-card {
  background: var(--gradient-info-bg);
  border: 1px solid rgba(var(--color-primary-rgb), 0.12);
  text-align: center;
}

.cta-desc {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-secondary);
  margin: 0 0 18px;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--primary);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  text-decoration: none;
  border-radius: var(--radius-btn-lg);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.25s var(--transition);
  letter-spacing: -0.01em;
  min-height: 44px;
  box-shadow: var(--shadow-glow-primary);
}

.cta-btn:active {
  transform: scale(0.96);
}

.cta-btn i {
  font-size: 16px;
}

/* ========================================
   内容导航区
   ======================================== */
.content-navigation-section {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  margin-top: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.content-nav-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.content-nav-block {
  background: var(--bg-page);
  border-radius: 14px;
  padding: 22px 20px;
  border: 1px solid var(--border-light);
  transition: all 0.3s var(--transition);
}

.content-nav-block:active {
  transform: scale(0.99);
}

.products-block {
  grid-column: 1 / -1;
}

.nav-block-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-light);
}

.nav-block-header i {
  font-size: 20px;
  color: var(--primary);
}

.nav-block-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.01em;
}

.nav-block-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

/* 产品列表 */
.products-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.products-item {
  margin-bottom: 0;
}

.products-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all 0.25s var(--transition);
  border: 1px solid transparent;
  min-height: 90px;
}

.products-link:active {
  transform: scale(0.98);
  border-color: var(--primary);
}

.products-thumb {
  flex-shrink: 0;
  width: 70px;
  height: 70px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-page);
  display: flex;
  align-items: center;
  justify-content: center;
}

.products-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8px;
}

.products-thumb-empty {
  background: var(--gradient-primary-soft);
}

.products-thumb-empty i {
  font-size: 32px;
  color: var(--primary);
  opacity: 0.5;
}

.products-info {
  flex: 1;
  min-width: 0;
}

.products-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 6px;
  line-height: 1.4;
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.products-subtitle {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 普通列表 */
.nav-block-item {
  margin-bottom: 10px;
}

.nav-block-item:last-child {
  margin-bottom: 0;
}

.nav-block-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  transition: all 0.25s var(--transition);
  border: 1px solid transparent;
  min-height: 44px;
}

.nav-block-item a:active {
  transform: scale(0.98);
  color: var(--primary);
  border-color: var(--primary);
}

.nav-block-item .item-title {
  flex: 1;
}

.nav-block-item .item-date {
  flex-shrink: 0;
  font-size: 12px;
  color: var(--text-muted);
  margin-left: 12px;
}

/* 查看更多按钮 */
.nav-block-more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  color: var(--primary);
  text-decoration: none;
  border-radius: var(--radius-btn-lg);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s var(--transition);
  border: 1px solid var(--primary);
  min-height: 40px;
}

.nav-block-more:active {
  transform: scale(0.96);
}

.nav-block-more i {
  font-size: 13px;
}

/* 空状态 */
.empty-state {
  padding: 32px 20px;
  text-align: center;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  border-radius: var(--radius-md);
  border: 2px dashed var(--border-light);
}

.empty-text {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
  font-weight: 500;
}

/* ========================================
   合规声明 - 白色主题优化
   ======================================== */
.compliance-section {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  margin-top: 32px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-xs);
  position: relative;
  overflow: hidden;
}

/* 装饰性背景图案 */
.compliance-section::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: var(--gradient-radial-primary-soft-03);
  border-radius: 50%;
  pointer-events: none;
}

.compliance-section::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 220px;
  height: 220px;
  background: var(--gradient-radial-indigo-soft);
  border-radius: 50%;
  pointer-events: none;
}

.compliance-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  z-index: 1;
}

.compliance-item {
  background: var(--gradient-neutral-light);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--primary);
  transition: all 0.3s var(--transition);
  position: relative;
  overflow: hidden;
}

/* 悬停效果 */
.compliance-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--gradient-primary-tint-left-03);
  transition: width 0.4s var(--transition);
}

.compliance-item:hover::before {
  width: 100%;
}

.compliance-item:hover {
  border-left-color: var(--color-primary-active);
  box-shadow: var(--shadow-sm);
  transform: translateX(2px);
}

.compliance-subtitle {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 12px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.compliance-subtitle i {
  font-size: 18px;
  color: var(--primary);
  flex-shrink: 0;
}

.compliance-text {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.8;
  color: var(--text-secondary);
  margin: 0;
  position: relative;
  z-index: 1;
}

.compliance-text strong {
  font-weight: 600;
  color: var(--text-primary);
}

/* 高亮样式 */
.highlight-domain {
  color: var(--primary);
  font-weight: 600;
  padding: 2px 6px;
  background: rgba(var(--color-primary-rgb), 0.08);
  border-radius: 4px;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.95em;
}

.highlight-code {
  color: var(--color-primary);                          /* R14-N: was #7c3aed 紫 */
  font-weight: 600;
  padding: 2px 6px;
  background: rgba(var(--color-primary-rgb), 0.08);     /* R14-N: was rgba(124,58,237) 紫底 */
  border-radius: 4px;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.95em;
}

/* ========================================
   响应式设计
   ======================================== */

/* 小屏幕 (≥576px) */
@media (min-width: 576px) {
  .about-page .container {
    padding: 0 24px;
  }

  .about-page {
    padding: 28px 0 56px;
  }

  .about-header-content {
    padding: 72px 48px;
  }

  .about-title {
    font-size: 38px;
    margin-bottom: 32px;
  }

  .subtitle-text {
    font-size: 17px;
  }

  .subtitle-line {
    width: 80px;
  }

  .gallery-item {
    width: 300px;
  }

  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .content-nav-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .compliance-content {
    gap: 18px;
  }

  .compliance-item {
    padding: 22px 20px;
  }

  /* 悬停效果 */
  .advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
  }

  .content-nav-block:hover {
    box-shadow: var(--shadow-card);
    border-color: var(--primary);
  }

  .nav-block-item a:hover {
    color: var(--primary);
    border-color: var(--primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-xs);
  }

  .products-link:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-card);
  }

  .nav-block-more:hover {
    background: var(--primary);
    color: var(--color-text-inverse);              /* R14-C4: was white */
    transform: translateX(4px);
    box-shadow: var(--shadow-primary);
  }

  .cta-btn:hover {
    background: var(--color-primary-active);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
  }

  .info-link:hover {
    color: var(--color-primary-active);
  }
}

/* 中等屏幕 (≥768px) */
@media (min-width: 768px) {
  .about-page .container {
    max-width: 720px;
  }

  .about-main {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
  }

  .about-sidebar {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    margin-top: 0;
  }

  .about-page {
    padding: 36px 0 64px;
  }

  .about-header-content {
    padding: 80px 56px;
  }

  .about-title {
    font-size: 42px;
  }

  .subtitle-text {
    font-size: 18px;
  }

  .section-title,
  .card-title {
    font-size: 22px;
  }

  .about-content {
    font-size: 17px;
  }

  .about-content-section,
  .about-gallery-section,
  .about-advantages-section {
    padding: 32px 28px;
  }

  .content-nav-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .products-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 大屏幕 (≥992px) */
@media (min-width: 992px) {
  .about-page .container {
    max-width: 960px;
  }

  .about-main {
    flex: 0 0 68%;
    max-width: 68%;
  }

  .about-sidebar {
    flex: 0 0 32%;
    max-width: 32%;
  }

  .products-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 超大屏幕 (≥1200px) */
@media (min-width: 1200px) {
  .about-page .container {
    max-width: 1140px;
  }

  .about-title {
    font-size: 48px;
  }

  .subtitle-text {
    font-size: 19px;
  }

  .products-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 超超大屏幕 (≥1400px) */
@media (min-width: 1400px) {
  .about-page .container {
    max-width: 1320px;
  }
}

/* ========================================
   性能优化
   ======================================== */
.about-content-section,
.about-gallery-section,
.about-advantages-section,
.company-info-card,
.qrcode-card,
.contact-cta-card,
.content-navigation-section,
.compliance-section {
  contain: layout style;
}

/* 减少动画效果 */
@media (prefers-reduced-motion: reduce) {
  .gallery-container,
  .advantage-card,
  .content-nav-block,
  .compliance-item,
  .about-header::before,
  .about-header::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* 触摸优化 */
.advantage-card,
.content-nav-block,
.nav-block-item a,
.products-link,
.cta-btn,
.nav-block-more,
.compliance-item {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* ========================================
   打印样式
   ======================================== */
@media print {
  .about-sidebar,
  .gallery-wrapper {
    display: none;
  }

  .about-main {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .about-header {
    background: var(--color-bg-primary);              /* R14-D1: was white */
    color: var(--text-primary);
    box-shadow: none;
  }

  .about-title,
  .subtitle-text {
    color: var(--text-primary);
  }

  .compliance-section {
    page-break-inside: avoid;
  }
}

/* ========================================
   通用联系我们样式
======================================== */
.contact-page {
  background: var(--color-bg-secondary);            /* R14-D2: was #f8fafc */
  padding: 20px 0 48px;
  min-height: 100vh;
}

.contact-page .contact-header {
  background: var(--gradient-hero-primary);
  border-radius: var(--radius-hero);
  padding: 0;
  margin-bottom: 32px;
  box-shadow: var(--shadow-primary-lg);
  position: relative;
  overflow: hidden;
}

.contact-page .contact-header::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: var(--gradient-radial-white-05);
  border-radius: 50%;
  animation: contact-float 20s ease-in-out infinite;
}

.contact-page .contact-header::after {
  content: '';
  position: absolute;
  bottom: -40%;
  left: -15%;
  width: 500px;
  height: 500px;
  background: var(--gradient-radial-white-03);
  border-radius: 50%;
  animation: contact-float 25s ease-in-out infinite reverse;
}

@keyframes contact-float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(30px, -30px) scale(1.1);
  }
}

.contact-page .contact-header-content {
  position: relative;
  z-index: 1;
  padding: 56px 32px;
  text-align: center;
}

.contact-page .contact-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text-inverse);              /* R14-C4: was white */
  margin: 0 0 28px;
  letter-spacing: -0.02em;
  line-height: 1.3;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.contact-page .contact-subtitle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.contact-page .subtitle-line {
  width: 60px;
  height: 2px;
  background: var(--gradient-shimmer-white);
}

.contact-page .subtitle-text {
  font-size: 15px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.95);
  letter-spacing: 0.01em;
  margin: 0;
  max-width: 600px;
  line-height: 1.6;
}

.contact-page .contact-main-row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -16px;
}

.contact-page .contact-main {
  width: 100%;
  padding: 0 16px;
}

.contact-page .contact-sidebar {
  width: 100%;
  padding: 0 16px;
  margin-top: 32px;
}

.contact-page .online-service-section,
.contact-page .official-account-section,
.contact-page .service-time-section,
.contact-page .company-info-section,
.contact-page .backup-contact-section,
.contact-page .faq-quick-section,
.contact-page .quick-links-section,
.contact-page .service-cta-section,
.contact-page .message-board-section {
  background: var(--color-bg-primary);              /* R14-D1: was #ffffff */
  border-radius: var(--radius-card);
  padding: 28px 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-xs);
  border: 1px solid #e2e8f0;
}

.contact-page .section-title,
.contact-page .card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 0 0 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

.contact-page .section-title .title-icon,
.contact-page .card-title .title-icon {
  width: 4px;
  height: 24px;
  background: var(--gradient-primary-theme);
  border-radius: 2px;
  flex-shrink: 0;
}

.contact-page .service-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-page .service-intro {
  text-align: center;
}

.contact-page .intro-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  margin: 0 0 10px;
}

.contact-page .intro-text:last-child {
  margin-bottom: 0;
}

.contact-page .service-action {
  text-align: center;
}

.contact-page .service-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 40px;
  background: var(--gradient-primary-theme);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  text-decoration: none;
  border-radius: 28px;
  font-weight: 600;
  font-size: 16px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-primary);
  min-height: 52px;
  border: none;
}

.contact-page .service-btn:active {
  transform: scale(0.97);
}

.contact-page .service-btn.disabled {
  background: #cbd5e1;
  box-shadow: none;
  cursor: not-allowed;
}

.contact-page .service-btn i {
  font-size: 18px;
}

.contact-page .service-features {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  padding-top: 8px;
}

.contact-page .feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  font-size: 14px;
  font-weight: 500;
}

.contact-page .feature-item i {
  color: #10b981;
  font-size: 16px;
}

.contact-page .account-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-page .account-intro {
  text-align: center;
}

.contact-page .account-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 12px 0;
}

.contact-page .intro-note {
  font-size: 13px;
  color: var(--color-text-placeholder);          /* R14-C4: was #94a3b8 */
  margin: 8px 0 0;
}

.contact-page .account-qrcode {
  display: flex;
  justify-content: center;
}

.contact-page .qrcode-wrapper {
  text-align: center;
  margin: 0;
}

.contact-page .qrcode-wrapper img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-image);
  border: 2px solid #e2e8f0;
  padding: 12px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  margin-bottom: 12px;
}

.contact-page .qrcode-caption {
  font-size: 14px;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  font-weight: 500;
}

.contact-page .qrcode-placeholder {
  width: 200px;
  height: 200px;
  border: 2px dashed #e2e8f0;
  border-radius: var(--radius-image);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--color-bg-secondary);            /* R14-D2: was #f8fafc */
}

.contact-page .qrcode-placeholder i {
  font-size: 48px;
  color: #cbd5e1;
}

.contact-page .qrcode-placeholder p {
  font-size: 13px;
  color: var(--color-text-placeholder);          /* R14-C4: was #94a3b8 */
  margin: 0;
}

.contact-page .time-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-page .time-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--gradient-info-bg);
  border-radius: var(--radius-card);
  border: 1px solid rgba(var(--color-primary-rgb), 0.12);
}

.contact-page .time-item i {
  font-size: 24px;
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-page .time-info {
  flex: 1;
}

.contact-page .time-value {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  display: block;
  margin-bottom: 8px;
}

.contact-page .time-note {
  font-size: 14px;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  margin: 0;
}

.contact-page .company-content {
  background: var(--color-bg-secondary);            /* R14-D2: was #f8fafc */
  border-radius: var(--radius-card);
  padding: 20px;
}

.contact-page .info-list {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-page .info-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e2e8f0;
}

.contact-page .info-group:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact-page .info-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);                /* R14-C4: was #64748b */
  margin: 0;
}

.contact-page .info-label i {
  font-size: 16px;
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
}

.contact-page .info-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 0;
  padding-left: 26px;
  line-height: 1.6;
}

.contact-page .info-value a {
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  text-decoration: none;
  transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-page .info-value a:active {
  color: var(--color-primary-active);          /* R14-C3: was #1e40af */
}

.contact-page .backup-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-page .backup-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-secondary);            /* R14-D2: was #f8fafc */
  border-radius: var(--radius-card);
  border: 1px solid #e2e8f0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-page .backup-item:active {
  transform: scale(0.99);
}

.contact-page .backup-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary-soft);
  border-radius: var(--radius-card);
}

.contact-page .backup-icon i {
  font-size: 22px;
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
}

.contact-page .backup-info {
  flex: 1;
}

.contact-page .backup-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 0 0 8px;
}

.contact-page .backup-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 0 0 6px;
}

.contact-page .backup-value a {
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  text-decoration: none;
  transition: color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-page .backup-value a:active {
  color: var(--color-primary-active);          /* R14-C3: was #1e40af */
}

.contact-page .backup-note {
  font-size: 13px;
  color: var(--color-text-muted);                /* R14-C4: was #64748b */
  margin: 0;
}

.contact-page .faq-intro {
  text-align: center;
  margin-bottom: 20px;
}

.contact-page .faq-intro p {
  font-size: 14px;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  margin: 0;
  line-height: 1.6;
}

.contact-page .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-page .faq-item {
  margin: 0;
}

.contact-page .faq-item a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: var(--color-bg-secondary);            /* R14-D2: was #f8fafc */
  border-radius: 8px;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
  min-height: 48px;
}

.contact-page .faq-item a:active {
  transform: scale(0.98);
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  border-color: var(--color-primary);          /* R14-C3: was #2563eb */
  background: var(--color-bg-primary);              /* R14-D1: was white */
}

.contact-page .faq-item i {
  font-size: 16px;
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  flex-shrink: 0;
}

.contact-page .faq-title {
  flex: 1;
}

.contact-page .faq-more-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  text-decoration: none;
  border-radius: var(--radius-btn-lg);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--color-primary);      /* R14-C3: was #2563eb */
  min-height: 40px;
  margin-top: 16px;
  width: 100%;
}

.contact-page .faq-more-btn:active {
  transform: scale(0.96);
}

.contact-page .faq-more-btn i {
  font-size: 13px;
}

.contact-page .quick-nav {
  margin: 0;
}

.contact-page .nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-page .nav-item {
  margin: 0;
}

.contact-page .nav-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--color-bg-secondary);            /* R14-D2: was #f8fafc */
  border-radius: 8px;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
  min-height: 42px;
}

.contact-page .nav-item a:active {
  transform: scale(0.98);
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  border-color: var(--color-primary);          /* R14-C3: was #2563eb */
  background: var(--color-bg-primary);              /* R14-D1: was white */
}

.contact-page .nav-item i {
  font-size: 12px;
  color: var(--color-text-placeholder);          /* R14-C4: was #94a3b8 */
}

.contact-page .service-cta-section {
  background: var(--gradient-info-bg);
  border: 1px solid rgba(var(--color-primary-rgb), 0.12);
  text-align: center;
}

.contact-page .cta-content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.contact-page .cta-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  margin: 0;
}

.contact-page .cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--color-primary);            /* R14-C3: was #2563eb */
  color: var(--color-text-inverse);              /* R14-C4: was white */
  text-decoration: none;
  border-radius: var(--radius-btn-lg);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 44px;
  box-shadow: var(--shadow-glow-primary);
}

.contact-page .cta-btn:active {
  transform: scale(0.96);
}

.contact-page .cta-btn i {
  font-size: 16px;
}

.contact-page .message-board-section {
  padding: 32px 24px;
}

.contact-page .message-records {
  margin-bottom: 32px;
}

.contact-page .records-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #e2e8f0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-page .records-title i {
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  font-size: 20px;
}

.contact-page .message-item {
  padding: 20px;
  background: var(--color-bg-secondary);            /* R14-D2: was #f8fafc */
  border-radius: var(--radius-card);
  margin-bottom: 16px;
  border: 1px solid #e2e8f0;
}

.contact-page .message-item:last-child {
  margin-bottom: 0;
}

.contact-page .message-header {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
}

.contact-page .message-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
}

.contact-page .message-meta {
  flex: 1;
}

.contact-page .message-author {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 0 0 8px;
}

.contact-page .message-info {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.contact-page .message-badge {
  font-size: 12px;
  padding: 3px 10px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  color: var(--color-text-muted);                /* R14-C4: was #64748b */
  border-radius: var(--radius-chip);
  font-weight: 500;
  border: 1px solid #e2e8f0;
}

.contact-page .message-date {
  font-size: 12px;
  color: var(--color-text-placeholder);          /* R14-C4: was #94a3b8 */
}

.contact-page .message-body {
  padding: 0 0 0 52px;
}

.contact-page .message-content {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  margin: 0;
  word-break: break-word;
}

.contact-page .message-reply {
  margin-top: 16px;
  padding: 16px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  margin-left: 52px;
}

.contact-page .reply-header {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.contact-page .reply-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
}

.contact-page .reply-meta {
  flex: 1;
}

.contact-page .reply-author {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 0 0 6px;
}

.contact-page .reply-date {
  font-size: 12px;
  color: var(--color-text-placeholder);          /* R14-C4: was #94a3b8 */
}

.contact-page .reply-body {
  padding: 0 0 0 42px;
}

.contact-page .reply-content {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  margin: 0;
  word-break: break-word;
}

.contact-page .message-pagination {
  margin: 24px 0 32px;
}

.contact-page .pagination-wrapper {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.contact-page .page-link {
  padding: 8px 16px;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  color: var(--color-text-quaternary);           /* R14-C4: was #475569 */
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid #e2e8f0;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

.contact-page .page-link:active {
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  border-color: var(--color-primary);          /* R14-C3: was #2563eb */
  background: var(--color-bg-selected);             /* R14-D3: was #f0f9ff (Δ 4) */
}

.contact-page .message-form-wrapper {
  background: var(--color-bg-secondary);            /* R14-D2: was #f8fafc */
  border-radius: var(--radius-card);
  padding: 24px;
}

.contact-page .form-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-page .form-title i {
  color: var(--color-primary);                 /* R14-C3: was #2563eb */
  font-size: 20px;
}

.contact-page .form-intro {
  font-size: 14px;
  color: var(--color-text-muted);                /* R14-C4: was #64748b */
  margin: 0 0 24px;
  line-height: 1.6;
}

.contact-page .message-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-page .form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.contact-page .form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.contact-page .form-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
}

.contact-page .label-required {
  color: #ef4444;
  font-size: 14px;
}

.contact-page .form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--color-text-primary);              /* R14-C4: was #0f172a */
  background: var(--color-bg-primary);              /* R14-D1: was white */
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: inherit;
}

.contact-page .form-control:focus {
  outline: none;
  border-color: var(--color-primary);          /* R14-C3: was #2563eb */
  box-shadow: var(--shadow-focus);
}

.contact-page .form-control::placeholder {
  color: var(--color-text-placeholder);          /* R14-C4: was #94a3b8 */
}

.contact-page textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.contact-page .form-group-code {
  position: relative;
}

.contact-page .code-wrapper {
  display: flex;
  gap: 12px;
  align-items: center;
}

.contact-page .code-wrapper .form-control {
  flex: 1;
}

.contact-page .code-img {
  width: 120px;
  height: 40px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid #cbd5e1;
  flex-shrink: 0;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-page .code-img:hover {
  border-color: var(--color-primary);          /* R14-C3: was #2563eb */
}

.contact-page .form-group-submit {
  margin-top: 8px;
}

.contact-page .submit-btn {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--gradient-primary-theme);
  color: var(--color-text-inverse);              /* R14-C4: was white */
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-primary);
  min-height: 52px;
}

.contact-page .submit-btn:active {
  transform: scale(0.98);
}

.contact-page .submit-btn i {
  font-size: 16px;
}

.contact-page .submit-note {
  font-size: 13px;
  color: var(--color-text-muted);                /* R14-C4: was #64748b */
  margin: 12px 0 0;
  text-align: center;
}

.contact-page .empty-state {
  padding: 32px 20px;
  text-align: center;
  background: var(--color-bg-primary);              /* R14-D1: was white */
  border-radius: var(--radius-card);
  border: 2px dashed #e2e8f0;
}

.contact-page .empty-text {
  font-size: 14px;
  color: var(--color-text-placeholder);          /* R14-C4: was #94a3b8 */
  margin: 0;
  font-weight: 500;
}

@media (min-width: 576px) {
  .contact-page .container {
    padding: 0 24px;
  }

  .contact-page {
    padding: 28px 0 56px;
  }

  .contact-page .contact-header-content {
    padding: 72px 48px;
  }

  .contact-page .contact-title {
    font-size: 38px;
    margin-bottom: 32px;
  }

  .contact-page .subtitle-text {
    font-size: 16px;
  }

  .contact-page .subtitle-line {
    width: 80px;
  }

  .contact-page .form-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-page .service-btn:hover {
    background: var(--gradient-primary-deep);                 /* R14-C2: was linear-gradient(135deg,#1e40af,#1e3a8a) — S族 bridge */
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary-lg);
  }

  .contact-page .backup-item:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--color-primary);        /* R14-C3: was #2563eb */
  }

  .contact-page .faq-item a:hover {
    color: var(--color-primary);               /* R14-C3: was #2563eb */
    border-color: var(--color-primary);        /* R14-C3: was #2563eb */
    background: var(--color-bg-primary);              /* R14-D1: was white */
    transform: translateX(4px);
  }

  .contact-page .faq-more-btn:hover,
  .contact-page .cta-btn:hover {
    background: var(--color-primary-active);   /* R14-C3: was #1e40af */
    transform: translateX(4px);
    box-shadow: var(--shadow-primary);
  }

  .contact-page .nav-item a:hover {
    color: var(--color-primary);               /* R14-C3: was #2563eb */
    border-color: var(--color-primary);        /* R14-C3: was #2563eb */
    background: var(--color-bg-primary);              /* R14-D1: was white */
    transform: translateX(4px);
  }

  .contact-page .page-link:hover {
    color: var(--color-primary);               /* R14-C3: was #2563eb */
    border-color: var(--color-primary);        /* R14-C3: was #2563eb */
    background: var(--color-bg-selected);             /* R14-D3: was #f0f9ff (Δ 4) */
  }

  .contact-page .submit-btn:hover {
    background: var(--gradient-primary-deep);                 /* R14-C2: was linear-gradient(135deg,#1e40af,#1e3a8a) — S族 bridge */
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary-lg);
  }

  .contact-page .info-value a:hover {
    color: var(--color-primary-active);        /* R14-C3: was #1e40af */
  }

  .contact-page .backup-value a:hover {
    color: var(--color-primary-active);        /* R14-C3: was #1e40af */
  }
}

@media (min-width: 768px) {
  .contact-page .container {
    max-width: 720px;
  }

  .contact-page .contact-main {
    flex: 0 0 66.666667%;
    max-width: 66.666667%;
  }

  .contact-page .contact-sidebar {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    margin-top: 0;
  }

  .contact-page {
    padding: 36px 0 64px;
  }

  .contact-page .contact-header-content {
    padding: 80px 56px;
  }

  .contact-page .contact-title {
    font-size: 42px;
  }

  .contact-page .subtitle-text {
    font-size: 17px;
  }

  .contact-page .section-title,
  .contact-page .card-title {
    font-size: 22px;
  }

  .contact-page .message-form-wrapper {
    padding: 32px;
  }
}

@media (min-width: 992px) {
  .contact-page .container {
    max-width: 960px;
  }

  .contact-page .contact-main {
    flex: 0 0 68%;
    max-width: 68%;
  }

  .contact-page .contact-sidebar {
    flex: 0 0 32%;
    max-width: 32%;
  }
}

@media (min-width: 1200px) {
  .contact-page .container {
    max-width: 1140px;
  }

  .contact-page .contact-title {
    font-size: 48px;
  }

  .contact-page .subtitle-text {
    font-size: 18px;
  }
}

@media (min-width: 1400px) {
  .contact-page .container {
    max-width: 1320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .contact-page .contact-header::before,
  .contact-page .contact-header::after,
  .contact-page .service-btn,
  .contact-page .backup-item,
  .contact-page .faq-item a,
  .contact-page .nav-item a {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

.contact-page .service-btn,
.contact-page .backup-item,
.contact-page .faq-item a,
.contact-page .nav-item a,
.contact-page .page-link,
.contact-page .submit-btn,
.contact-page .cta-btn,
.contact-page .faq-more-btn {
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

@media print {
  .contact-page .contact-sidebar,
  .contact-page .message-records {
    display: none;
  }

  .contact-page .contact-main {
    flex: 0 0 100%;
    max-width: 100%;
  }

  .contact-page .contact-header {
    background: var(--color-bg-primary);              /* R14-D1: was white */
    color: var(--color-text-primary);            /* R14-C4: was #0f172a */
    box-shadow: none;
  }

  .contact-page .contact-title,
  .contact-page .subtitle-text {
    color: var(--color-text-primary);            /* R14-C4: was #0f172a */
  }
}
@media screen and (max-width: 768px) {
    .index-page .differences-table-wrapper {
        margin: 0 ;
        padding: 0 ;
        width: 100% ;
    }

    .index-page .diff-header {
        background: none ;
        display: flex ;
        flex-direction: column;
        padding: 0 ;
        border: none ;
    }

    .index-page .diff-header .diff-cell {
        width: 100% ;
        box-sizing: border-box ;
        display: block ;
        padding: 10px 5px ;
        margin: 0 ;
    }

    .index-page .diff-header .diff-cell:first-child {
        background: var(--gradient-accent-purple) ;
        color: #ffffff ;
        font-weight: 700;
        border-radius: 8px;
        margin-bottom: 10px ;
        box-shadow: 0 4px 10px rgba(var(--color-primary-rgb), 0.2);  /* R14-N: was rgba(118,75,162) 紫色 shadow */
    }

    .index-page .diff-header .diff-cell:not(:first-child) {
        background: transparent ;
        color: #333333 ;
        font-weight: normal ;
        border-bottom: 1px solid #eee;
    }

    .index-page .diff-header .diff-cell:last-child {
        border-bottom: none;
    }

    .index-page .diff-header .diff-cell::before {
        content: none ;
        display: none ;
    }
}

/* =====================================================================
   §R13.1 · Product page extension selectors (2026-04-21, updated)
   目标: 左右对称(sticky gallery) · 参数全卡片化 · variants/tags chip 化
   原则: 纯加法; 若与既有规则冲突以本段为准(末端赢家); 命名 BEM-lite
   ===================================================================== */

/* --- §R13.1-1 · 左右自然对称: 右列只承载购买决策, 无需 sticky --- */
@media (min-width: 992px) {
    .product-detail-page .product-layout {
        align-items: start;
    }
}

/* --- §R13.1-2 · 统一卡片基类 .product-card: 右列各参数模块共用外观 --- */
.product-detail-page .product-info-section > .product-card {
    background: var(--color-bg-primary);              /* R14-D1: was #fff */
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: 14px;
    padding: 18px 22px;
    box-shadow: var(--shadow-xs);
    margin: 0;
}
.product-detail-page .product-info-section > .product-card + .product-card {
    margin-top: 0; /* gap 由 info-section 的 flex gap 控制 */
}

/* 让特殊模块 (pricing / tips) 维持既有外观,但融入卡片体系 */
.product-detail-page .product-info-section > .product-pricing-box.product-card {
    background: var(--gradient-neutral-snow);
}
.product-detail-page .product-info-section > .tips-notice.product-card {
    display: flex;
    gap: 14px;
    background: var(--gradient-primary-bg-mist);
    border-color: var(--color-primary-light);     /* R14-N: was #bfdbfe (blue-200 冷色) */
}

/* --- §R13.1-3 · 标题层 --- */
.product-detail-page .product-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text-primary, #1a1a1a);
    margin: 0 0 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.product-detail-page .product-section-title::before {
    content: "";
    width: 4px;
    height: 16px;
    background: var(--gradient-primary-theme-vertical);
    border-radius: 2px;
    display: inline-block;
}
.product-detail-page .product-section-subtitle {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text-primary, #1a1a1a);
    margin: 0 0 10px;
}

/* --- §R13.1-4 · 产品亮点卡片: 支持 <br> 或纯文本, 自动视觉分段 --- */
.product-detail-page .product-highlights-list {
    font-size: 14px;
    line-height: 1.8;
    color: var(--color-text-secondary, #475569);
    margin: 0;
    padding: 0;
    list-style: none;
}
.product-detail-page .product-highlights-list br {
    display: block;
    content: "";
    margin-top: 6px;
}

/* --- §R13.1-5 · 规格版本 chip 化 --- */
.product-detail-page .product-variants-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 28px;
}
/* chip 基类 · variants / tags 共用 */
.product-detail-page .product-variants-list .chip,
.product-detail-page .product-tags .chip {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    font-size: 12.5px;
    font-weight: 500;
    line-height: 1.6;
    color: var(--color-primary, #0d9488);
    background: rgba(13, 148, 136, 0.08);
    border: 1px solid rgba(13, 148, 136, 0.2);
    border-radius: 999px;
    white-space: nowrap;
}
/* JS 未执行时的回退: 直接显示原始 attr 内容 */
.product-detail-page .product-variants-list:empty::before {
    content: attr(data-variants);
    font-size: 13px;
    color: var(--color-text-muted, #94a3b8);
}
.product-detail-page .product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 24px;
}

/* --- §R13.1-6 · 额外价格标签 --- */
.product-detail-page .price-extra-label {
    margin-top: 8px;
    font-size: 13px;
    color: var(--color-accent, #d97706);
    font-weight: 600;
}

/* --- §R13.1-7 · 关键信息 meta-grid 卡片化 + 两列 dt/dd --- */
.product-detail-page .product-meta-grid {
    display: grid;
    gap: 10px;
    margin: 0;
}
.product-detail-page .product-meta-row {
    display: grid;
    grid-template-columns: 110px 1fr;
    padding: 8px 0;
    font-size: 13.5px;
    line-height: 1.7;
    border-bottom: 1px dashed var(--color-border, #e5e7eb);
}
.product-detail-page .product-meta-row:last-child { border-bottom: 0; }
.product-detail-page .product-meta-row dt {
    color: var(--color-text-muted, #64748b);
    font-weight: 600;
    margin: 0;
}
.product-detail-page .product-meta-row dd {
    color: var(--color-text-primary, #1a1a1a);
    margin: 0;
}

/* --- §R13.1-8 · 详情下方: 6 卡片 2 列网格 (tips / highlights / meta / specs / scenarios / verify) --- */
.product-detail-page .product-deep-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 32px 0 40px;
}
/* 跨 2 列的卡片: 提示 callout + 规格参数长内容 */
.product-detail-page .product-deep-grid > .product-deep-card--tips,
.product-detail-page .product-deep-grid > .product-deep-card--specs {
    grid-column: 1 / -1;
}

/* 卡片基座 */
.product-detail-page .product-deep-card {
    background: var(--color-bg-primary);              /* R14-D1: was #fff */
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: var(--radius-card);
    padding: 24px 28px;
    box-shadow: var(--shadow-xs);
    margin: 0;
    transition: box-shadow .2s ease, transform .2s ease;
}
.product-detail-page .product-deep-card:hover {
    box-shadow: var(--shadow-card);
}
.product-detail-page .product-deep-card .section-header {
    margin-bottom: 14px;
}
.product-detail-page .product-deep-card .section-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text-primary, #1a1a1a);
    margin: 0 0 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.product-detail-page .product-deep-card .section-title .section-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: rgba(var(--color-primary-rgb), 0.12);
    color: var(--color-primary);               /* R14-C3: was #2563eb */
    flex-shrink: 0;
}
.product-detail-page .product-deep-card .section-divider {
    width: 36px;
    height: 3px;
    background: var(--gradient-primary-theme-90);
    border-radius: 2px;
}

/* 卡片正文统一排版 */
.product-detail-page .product-tips-body,
.product-detail-page .product-highlights-body,
.product-detail-page .product-specs-body,
.product-detail-page .product-scenarios-body,
.product-detail-page .product-verify-tips-body {
    font-size: 14px;
    line-height: 1.9;
    color: var(--color-text-secondary, #475569);
    margin: 0;
}
/* <br> 分隔的纯文本内容 → 每行间距视觉稍放 */
.product-detail-page .product-highlights-body br,
.product-detail-page .product-specs-body br,
.product-detail-page .product-scenarios-body br,
.product-detail-page .product-verify-tips-body br {
    display: block;
    content: "";
    margin-top: 4px;
}

/* 卡片变体 · 提示 (蓝色 callout) */
.product-detail-page .product-deep-card--tips {
    background: var(--gradient-primary-bg-mist);
    border-color: var(--color-primary-light);     /* R14-N: was #bfdbfe (blue-200 冷色) */
}
.product-detail-page .product-deep-card--tips .section-title { color: var(--color-primary); }   /* R14-Q: was --color-primary-active, 深色主题太暗看不见 */
.product-detail-page .product-deep-card--tips .section-divider {
    background: var(--gradient-primary-bright-90);
}
.product-detail-page .product-deep-card--tips .product-tips-body {
    color: var(--color-text); /* R14-Q: was --color-primary-dark (#7c2d12 in T10) 深色主题不可见 */
    font-size: 15px;
    font-weight: 500;
}

/* 卡片变体 · 产品亮点 (淡绿/青强调, 与 teal 主色呼应) */
.product-detail-page .product-deep-card--highlights {
    background: var(--gradient-success-bg);
}
.product-detail-page .product-deep-card--highlights .section-title {
    color: var(--color-primary-hover, #0f766e);
}

/* 卡片变体 · 关键信息 (中性白底, meta-grid 自带分隔) */
.product-detail-page .product-deep-card--meta .product-meta-grid {
    gap: 0;
}
.product-detail-page .product-deep-card--meta .product-meta-row {
    padding: 10px 0;
    border-bottom: 1px dashed var(--color-border, #e5e7eb);
}
.product-detail-page .product-deep-card--meta .product-meta-row:last-child { border-bottom: 0; }

/* 卡片变体 · 安全与核验 (暖色告警卡) */
.product-detail-page .product-deep-card--verify {
    background: var(--gradient-warning-bg);
    border-color: var(--color-warning, #fed7aa); /* R14-Q: was #fed7aa, 深色主题 border 不可见 */
}
.product-detail-page .product-deep-card--verify .section-title { color: var(--color-warning, #9a3412); } /* R14-Q: was #9a3412 */
.product-detail-page .product-deep-card--verify .section-divider {
    background: var(--gradient-warning-90);
}
.product-detail-page .product-deep-card--verify .product-verify-tips-body { color: var(--color-text); } /* R14-Q: was #78350f 深色主题不可见 */

/* --- §R13.1-9 · 响应式: <992px 还原为单列 (所有卡片占满一行) --- */
@media (max-width: 991.98px) {
    .product-detail-page .product-deep-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .product-detail-page .product-deep-grid > .product-deep-card--tips,
    .product-detail-page .product-deep-grid > .product-deep-card--specs {
        grid-column: auto;
    }
}
@media (max-width: 768px) {
    .product-detail-page .product-info-section > .product-card {
        padding: 14px 16px;
        border-radius: var(--radius-card);
    }
    .product-detail-page .product-deep-card {
        padding: 18px 18px;
        border-radius: var(--radius-card);
    }
    .product-detail-page .product-deep-card .section-title {
        font-size: 15px;
    }
    .product-detail-page .product-meta-row {
        grid-template-columns: 1fr;
        gap: 2px;
        padding: 6px 0;
    }
    .product-detail-page .product-section-title {
        font-size: 15px;
    }
}

/* --- §R13.1-10 · 列表卡片扩展: tags chips + stock + 原价删除线 --- */
.product-list-page .product-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 8px 0 10px;
    min-height: 0;
}
.product-list-page .product-card-tags::before {
    content: attr(data-tags);
    font-size: 12px;
    line-height: 1.6;
    color: var(--color-text-muted, #64748b);
    background: var(--color-surface, #f1f5f9);
    padding: 2px 10px;
    border-radius: 999px;
    border: 1px solid var(--color-border, #e5e7eb);
    white-space: normal;
    word-break: break-word;
}
.product-list-page .product-card-stock {
    display: inline-block;
    margin-top: 4px;
    padding: 2px 10px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-success, #10b981);
    background: rgba(var(--color-success-rgb, 16 185 129), .08);
    border-radius: 999px;
}
.product-list-page .product-card-price-ori {
    display: inline-block;
    margin-left: 8px;
    color: var(--color-text-muted, #94a3b8);
    text-decoration: line-through;
    font-size: 12px;
    font-weight: 500;
}

/* §R13.1 end ================================================================ */