```css
/* ==========================================================================
   exuut.cn 免费看漫画 - 完整样式表
   风格：现代渐变 + 毛玻璃质感 + 圆角卡片
   支持：PC/移动端响应式、暗色模式、滚动动画、hover交互
   ========================================================================== */

/* ---------- 基础重置与设计变量 ---------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 品牌色系 */
    --brand: #2b6c9e;
    --brand-dark: #1a4a6e;
    --brand-light: #e8f0f8;
    --brand-gradient: linear-gradient(135deg, #2b6c9e 0%, #4a9fd4 50%, #6bb8e8 100%);
    --accent: #f5a623;
    --accent-gradient: linear-gradient(135deg, #f5a623 0%, #ffc857 100%);

    /* 中性色 */
    --text: #1e2a36;
    --text-secondary: #4a5b6a;
    --text-muted: #8a9bab;
    --bg: #ffffff;
    --bg-alt: #f7f9fc;
    --bg-glass: rgba(255, 255, 255, 0.72);
    --border: #dce6f0;
    --border-light: rgba(220, 230, 240, 0.6);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(43, 108, 158, 0.06);
    --shadow: 0 4px 20px rgba(43, 108, 158, 0.08);
    --shadow-lg: 0 12px 40px rgba(43, 108, 158, 0.14);
    --shadow-glow: 0 0 0 4px rgba(43, 108, 158, 0.1);

    /* 圆角 */
    --radius-sm: 8px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-full: 999px;

    /* 字体 */
    --font: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    --font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', Consolas, monospace;

    /* 过渡 */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition: 0.3s var(--ease);
}

/* ---------- 暗色模式变量 ---------- */
body.dark-mode {
    --text: #e4e9f0;
    --text-secondary: #a0aec0;
    --text-muted: #6b7a8d;
    --bg: #0f1419;
    --bg-alt: #1a222d;
    --bg-glass: rgba(15, 20, 25, 0.78);
    --border: #2a3644;
    --border-light: rgba(42, 54, 68, 0.6);
    --brand-light: #1e2d3d;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
    --shadow-glow: 0 0 0 4px rgba(74, 159, 212, 0.15);
}

/* ---------- 全局基础样式 ---------- */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    color: var(--text);
    background: var(--bg);
    line-height: 1.75;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
}

img,
svg {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--brand);
    text-decoration: none;
    transition: color 0.2s var(--ease);
}

a:hover {
    color: var(--brand-dark);
}

body.dark-mode a:hover {
    color: #6bb8e8;
}

ul,
ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

input {
    font-family: inherit;
}

/* ---------- 容器 ---------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ---------- 无障碍隐藏 ---------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
    white-space: nowrap;
}

/* ---------- 阅读进度条 ---------- */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--brand-gradient);
    z-index: 2000;
    width: 0;
    transition: width 0.1s linear;
    box-shadow: 0 0 8px rgba(43, 108, 158, 0.5);
}

/* ==========================================================================
   导航栏
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-glass);
    border-bottom: 1px solid var(--border-light);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 16px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
    transition: transform 0.3s var(--ease);
}

.logo:hover {
    transform: scale(1.02);
    color: var(--text);
}

.logo svg {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(43, 108, 158, 0.3);
    transition: transform 0.4s var(--ease-bounce);
}

.logo:hover svg {
    transform: rotate(-6deg) scale(1.05);
}

.logo span {
    color: var(--brand);
}

/* 主导航链接 */
.nav-links {
    display: flex;
    gap: 2px;
    align-items: center;
}

.nav-links a {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
    position: relative;
    transition: background-color 0.25s var(--ease), color 0.25s var(--ease);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--brand-gradient);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width 0.3s var(--ease);
}

.nav-links a:hover {
    background: var(--brand-light);
    color: var(--brand);
}

.nav-links a:hover::after {
    width: 40%;
}

/* 导航操作区 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 搜索框 */
.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: 4px 6px 4px 16px;
    transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.search-box:focus-within {
    border-color: var(--brand);
    box-shadow: var(--shadow-glow);
}

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 0.9rem;
    width: 150px;
    color: var(--text);
    font-family: var(--font);
    transition: width 0.3s var(--ease);
}

.search-box input:focus {
    width: 190px;
}

.search-box input::placeholder {
    color: var(--text-muted);
    opacity: 0.8;
}

.search-box button {
    border: none;
    background: var(--brand-gradient);
    color: #fff;
    border-radius: var(--radius-full);
    padding: 6px 14px;
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), filter 0.2s var(--ease);
}

.search-box button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(43, 108, 158, 0.35);
    filter: brightness(1.05);
}

.search-box button:active {
    transform: translateY(0);
}

/* 主题切换按钮 */
.theme-toggle {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-alt);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text);
    font-size: 1.1rem;
    line-height: 1;
    transition: transform 0.3s var(--ease-bounce), background-color 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.theme-toggle:hover {
    transform: rotate(20deg) scale(1.08);
    border-color: var(--brand);
    box-shadow: var(--shadow-glow);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-alt);
    cursor: pointer;
    color: var(--text);
    font-size: 1.3rem;
    align-items: center;
    justify-content: center;
    transition: background-color 0.25s var(--ease), transform 0.2s var(--ease);
}

.mobile-menu-btn:hover {
    background: var(--brand-light);
    transform: scale(1.05);
}

/* 移动端导航 */
.mobile-nav {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 12px 20px 20px;
    border-top: 1px solid var(--border-light);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    animation: slideDown 0.3s var(--ease);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav a {
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 500;
    transition: background-color 0.25s var(--ease), color 0.25s var(--ease), padding-left 0.25s var(--ease);
}

.mobile-nav a:hover {
    background: var(--brand-light);
    color: var(--brand);
    padding-left: 20px;
}

.mobile-nav.open {
    display: flex;
}

/* ==========================================================================
   面包屑
   ========================================================================== */
.breadcrumb {
    padding: 16px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.breadcrumb li + li::before {
    content: '/';
    margin-right: 6px;
    opacity: 0.4;
}

.breadcrumb a {
    color: var(--text-secondary);
    transition: color 0.2s var(--ease);
}

.breadcrumb a:hover {
    color: var(--brand);
}

.breadcrumb [aria-current="page"] {
    color: var(--text);
    font-weight: 500;
}

/* ==========================================================================
   Banner 轮播
   ========================================================================== */
.banner {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 36px;
    background: var(--brand-gradient);
    min-height: 340px;
    box-shadow: var(--shadow-lg);
}

.banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 10% 90%, rgba(245, 166, 35, 0.18) 0%, transparent 45%);
    pointer-events: none;
    z-index: 1;
}

.banner-slides {
    position: relative;
    height: 100%;
    min-height: 340px;
}

.banner-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 44px 52px;
    gap: 24px;
    opacity: 0;
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    transform: scale(1.02);
    pointer-events: none;
    z-index: 2;
}

.banner-slide.active {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.banner-text {
    flex: 1;
    color: #fff;
    max-width: 580px;
    animation: fadeUp 0.6s var(--ease) both;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner-text h2 {
    font-size: 1.85rem;
    line-height: 1.3;
    margin-bottom: 14px;
    font-weight: 700;
    letter-spacing: -0.01em;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
}

.banner-text p {
    font-size: 1rem;
    opacity: 0.92;
    line-height: 1.75;
    margin-bottom: 24px;
    text-shadow: 0 1px 6px rgba(0, 0, 0, 0.1);
}

.banner-text .btn {
    display: inline-block;
    padding: 11px 30px;
    background: var(--accent-gradient);
    color: #1e2a36;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 16px rgba(245, 166, 35, 0.4);
    transition: transform 0.25s var(--ease-bounce), box-shadow 0.25s var(--ease), filter 0.25s var(--ease);
}

.banner-text .btn:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 8px 24px rgba(245, 166, 35, 0.5);
    color: #1e2a36;
    filter: brightness(1.05);
}

.banner-text .btn:active {
    transform: translateY(-1px) scale(1);
}

.banner-art {
    flex-shrink: 0;
    width: 240px;
    height: 240px;
    opacity: 0.92;
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.15));
    animation: floatArt 6s ease-in-out infinite;
}

@keyframes floatArt {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Banner 指示点 */
.banner-dots {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 5;
}

.banner-dots button {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    border: none;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    padding: 0;
    transition: background-color 0.3s var(--ease), width 0.3s var(--ease), transform 0.2s var(--ease);
}

.banner-dots button:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.2);
}

.banner-dots button.active {
    background: #fff;
    width: 26px;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.6);
}

/* ==========================================================================
   数字统计
   ========================================================================== */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 44px;
}

.stat-card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--brand);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--brand);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
}

body.dark-mode .stat-num {
    color: #6bb8e8;
}

.stat-label {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* ==========================================================================
   通用区块
   ========================================================================== */
section {
    margin-bottom: 52px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: -0.01em;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 26px;
    border-radius: 2px;
    background: var(--brand-gradient);
    flex-shrink: 0;
    box-shadow: 0 0 12px rgba(43, 108, 158, 0.4);
}

.section-sub {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 26px;
    padding-left: 16px;
}

/* ==========================================================================
   卡片网格
   ========================================================================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
    position: relative;
    overflow: hidden;
}

.card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(43, 108, 158, 0.04) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.35s var(--ease);
    pointer-events: none;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand);
}

.card:hover::after {
    opacity: 1;
}

.card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text);
    position: relative;
    z-index: 1;
}

.card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.75;
    position: relative;
    z-index: 1;
}

.card .icon {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-sm);
    background: var(--brand-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--brand);
    font-size: 1.4rem;
    position: relative;
    z-index: 1;
    transition: transform 0.35s var(--ease-bounce), background-color 0.35s var(--ease);
}

.card:hover .icon {
    transform: scale(1.12) rotate(-6deg);
    background: var(--brand);
    color: #fff;
}

body.dark-mode .card:hover .icon {
    background: #4a9fd4;
    color: #fff;
}

/* ==========================================================================
   文章列表
   ========================================================================== */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.article-item {
    display: flex;
    gap: 22px;
    padding: 22px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.article-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow);
    border-color: var(--brand);
}

.article-thumb {
    width: 130px;
    height: 96px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: linear-gradient(135deg, var(--brand-light), var(--border));
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.35s var(--ease);
}

.article-item:hover .article-thumb {
    transform: scale(1.03);
}

.article-body {
    flex: 1;
    min-width: 0;
}

.article-body h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.5;
}

.article-body h3 a {
    color: var(--text);
    transition: color 0.2s var(--ease);
}

.article-body h3 a:hover {
    color: var(--brand);
}

.article-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.article-summary {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-more {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--brand);
    font-weight: 500;
    transition: transform 0.25s var(--ease), color 0.2s var(--ease);
}

.article-more:hover {
    transform: translateX(4px);
    color: var(--brand-dark);
}

/* ==========================================================================
   FAQ 手风琴
   ========================================================================== */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-alt);
    transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.faq-item:hover {
    border-color: var(--brand);
    box-shadow: var(--shadow-sm);
}

.faq-item.open {
    border-color: var(--brand);
    box-shadow: var(--shadow);
}

.faq-q {
    width: 100%;
    text-align: left;
    padding: 18px 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    font-family: var(--font);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    line-height: 1.5;
    transition: color 0.2s var(--ease);
}

.faq-q:hover {
    color: var(--brand);
}

.faq-q::after {
    content: '+';
    font-size: 1.4rem;
    font-weight: 400;
    color: var(--brand);
    flex-shrink: 0;
    transition: transform 0.35s var(--ease-bounce);
    line-height: 1;
}

.faq-item.open .faq-q::after {
    transform: rotate(45deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.45s var(--ease), padding 0.35s var(--ease);
    padding: 0 22px;
}

.faq-item.open .faq-a {
    max-height: 700px;
    padding: 0 22px 20px;
}

.faq-a p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==========================================================================
   HowTo 步骤
   ========================================================================== */
.howto-steps {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    counter-reset: step;
    margin-top: 36px;
}

.howto-step {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 20px 20px;
    position: relative;
    counter-increment: step;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.howto-step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--brand);
}

.howto-step::before {
    content: counter(step);
    position: absolute;
    top: -14px;
    left: 18px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--brand-gradient);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(43, 108, 158, 0.35);
    transition: transform 0.35s var(--ease-bounce);
}

.howto-step:hover::before {
    transform: scale(1.15) rotate(-8deg);
}

.howto-step h4 {
    font-size: 0.95rem;
    margin-bottom: 8px;
    margin-top: 6px;
    color: var(--text);
}

.howto-step p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ==========================================================================
   表格
   ========================================================================== */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th,
td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--brand-light);
    font-weight: 600;
    color: var(--brand-dark);
    white-space: nowrap;
    position: sticky;
    top: 0;
}

body.dark-mode th {
    color: #6bb8e8;
}

tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background-color 0.2s var(--ease);
}

tbody tr:hover {
    background: var(--brand-light);
}

td {
    color: var(--text-secondary);
}

/* ==========================================================================
   团队卡片
   ========================================================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.team-card {
    text-align: center;
    padding: 28px 20px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.team-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand);
}

.team-avatar {
    width: 76px;
    height: 76px;
    border-radius: 50%;
    margin: 0 auto 14px;
    overflow: hidden;
    background: var(--brand-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 6px 20px rgba(43, 108, 158, 0.3);
    transition: transform 0.4s var(--ease-bounce);
}

.team-card:hover .team-avatar {
    transform: scale(1.08) rotate(4deg);
}

.team-card h4 {
    font-size: 0.95rem;
    margin-bottom: 6px;
    color: var(--text);
}

.team-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   联系卡片
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 22px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.contact-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--brand);
}

.contact-item .icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: var(--brand-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand);
    flex-shrink: 0;
    font-size: 1.2rem;
    transition: transform 0.35s var(--ease-bounce), background-color 0.35s var(--ease);
}

.contact-item:hover .icon {
    transform: scale(1.1);
    background: var(--brand);
    color: #fff;
}

.contact-item h4 {
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--text);
}

.contact-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding: 52px 0 26px;
    margin-top: 52px;
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand-gradient);
    opacity: 0.6;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 36px;
    margin-bottom: 36px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
    position: relative;
    padding-bottom: 8px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--brand-gradient);
    border-radius: 2px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: color 0.2s var(--ease), padding-left 0.25s var(--ease);
    display: inline-block;
}

.footer-col a:hover {
    color: var(--brand);
    padding-left: 5px;
}

.footer-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 16px;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-bottom a {
    color: var(--text-muted);
    transition: color 0.2s var(--ease);
}

.footer-bottom a:hover {
    color: var(--brand);
}

/* ==========================================================================
   返回顶部按钮
   ========================================================================== */
.back-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 900;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--brand-gradient);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s var(--ease), visibility 0.35s var(--ease), transform 0.35s var(--ease-bounce), box-shadow 0.35s var(--ease);
    box-shadow: 0 6px 20px rgba(43, 108, 158, 0.4);
}

.back-top.show {
    opacity: 1;
    visibility: visible;
}

.back-top:hover {
    transform: translateY(-4px) scale(1.06);
    box-shadow: 0 10px 28px rgba(43, 108, 158, 0.5);
}

.back-top:active {
    transform: translateY(-2px) scale(1);
}

/* ==========================================================================
   滚动动画
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    will-change: opacity, transform;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   锚点导航
   ========================================================================== */
.anchor-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
    padding: 16px 20px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: box-shadow 0.3s var(--ease);
}

.anchor-nav:hover {
    box-shadow: var(--shadow-sm);
}

.anchor-nav a {
    font-size: 0.82rem;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    background: var(--bg);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    transition: background-color 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.2s var(--ease);
}

.anchor-nav a:hover {
    background: var(--brand-gradient);
    color: #fff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(43, 108, 158, 0.3);
}

/* ==========================================================================
   时间线
   ========================================================================== */
.timeline {
    position: relative;
    padding-left: 30px;
    margin-top: 14px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: linear-gradient(to bottom, var(--brand), var(--border));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 26px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -26px;
    top: 7px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--brand-gradient);
    border: 2px solid var(--bg);
    box-shadow: 0 0 0 2px var(--brand);
    transition: transform 0.3s var(--ease-bounce), box-shadow 0.3s var(--ease);
}

.timeline-item:hover::before {
    transform: scale(1.25);
    box-shadow: 0 0 0 3px var(--brand), 0 0 12px rgba(43, 108, 158, 0.5);
}

.timeline-item h4 {
    font-size: 0.95rem;
    margin-bottom: 6px;
    color: var(--text);
}

.timeline-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ==========================================================================
   用户评价
   ========================================================================== */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.testimonial {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px 24px;
    position: relative;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}

.testimonial:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand);
}

.testimonial::before {
    content: '"';
    font-size: 3.4rem;
    color: var(--brand);
    opacity: 0.15;
    position: absolute;
    top: 6px;
    left: 18px;
    line-height: 1;
    font-family: Georgia, 'Times New Roman', serif;
    transition: opacity 0.35s var(--ease);
}

.testimonial:hover::before {
    opacity: 0.28;
}

.testimonial p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 18px;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--brand-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.82rem;
    font-weight: 600;
    flex-shrink: 0;
    box-shadow: 0 3px 10px rgba(43, 108, 158, 0.25);
    transition: transform 0.3s var(--ease-bounce);
}

.testimonial:hover .testimonial-avatar {
    transform: scale(1.1);
}

.testimonial-author strong {
    font-size: 0.85rem;
    display: block;
    color: var(--text);
}

.testimonial-author span {
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* ==========================================================================
   内联样式辅助类（对应HTML中使用的内联样式）
   ========================================================================== */
/* 两栏布局 */
.brand-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 36px;
    align-items: start;
}

.brand-layout p {
    margin-bottom: 16px;
    color: var(--text-secondary);
    line-height: 1.85;
}

.brand-layout p:last-child {
    margin-bottom: 0;
}

/* 网站地图/友情链接两栏 */
.sitemap-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.sitemap-layout .card ul {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sitemap-layout .card ul a {
    font-size: 0.88rem;
    transition: color 0.2s var(--ease), padding-left 0.25s var(--ease);
    display: inline-block;
}

.sitemap-layout .card ul a:hover {
    padding-left: 5px;
}

/* HowTo 文字区块 */
.howto-text-block {
    margin-bottom: 24px;
}

.howto-text-block h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text);
}

.howto-text-block p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.85;
}

.howto-text-block ul {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 2;
    padding-left: 22px;
    list-style: disc;
}

.howto-text-block ul li {
    margin-bottom: 4px;
}

/* ==========================================================================
   响应式 - 平板 (≤900px)
   ========================================================================== */
@media (max-width: 900px) {
    .nav-links {
        display: none;
    }

    .search-box input {
        width: 110px;
    }

    .search-box input:focus {
        width: 140px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .brand-layout {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
    }
}

/* ==========================================================================
   响应式 - 手机 (≤768px)
   ========================================================================== */
@media (max-width: 768px) {
    .banner-slide {
        padding: 30px 26px;
    }

    .banner-text h2 {
        font-size: 1.35rem;
    }

    .banner-text p {
        font-size: 0.92rem;
    }

    .banner-art {
        display: none;
    }

    .banner {
        min-height: 290px;
    }

    .banner-slides {
        min-height: 290px;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .stat-num {
        font-size: 1.6rem;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .section-title::before {
        height: 22px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .sitemap-layout {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .back-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }

    .article-item {
        gap: 16px;
        padding: 18px;
    }

    .article-thumb {
        width: 100px;
        height: 80px;
    }
}

/* ==========================================================================
   响应式 - 小屏手机 (≤600px)
   ========================================================================== */
@media (max-width: 600px) {
    .search-box {
        display: none;
    }

    .mobile-nav .search-box {
        display: flex;
        margin-top: 10px;
        width: 100%;
    }

    .mobile-nav .search-box input {
        width: 100%;
        flex: 1;
    }

    .mobile-nav .search-box input:focus {
        width: 100%;
    }

    .article-item {
        flex-direction: column;
    }

    .article-thumb {
        width: 100%;
        height: 150px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-card {
        padding: 20px 14px;
    }

    .stat-num {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }

    .banner-text .btn {
        padding: 10px 24px;
        font-size: 0.9rem;
    }

    .banner-text h2 {
        font-size: 1.2rem;
    }

    .banner-text p {
        font-size: 0.86rem;
        margin-bottom: 18px;
    }

    .banner {
        min-height: 260px;
    }

    .banner-slides {
        min-height: 260px;
    }

    .banner-slide {
        padding: 26px 20px;
    }

    .howto-steps {
        grid-template-columns: 1fr;
    }

    .team-grid {
        grid-template-columns: 1fr 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .testimonial-grid {
        grid-template-columns: 1fr;
    }

    .anchor-nav {
        padding: 12px 14px;
        gap: 6px;
    }

    .anchor-nav a {
        font-size: 0.78rem;
        padding: 5px 11px;
    }
}

/* ==========================================================================
   响应式 - 超小屏 (≤480px)
   ========================================================================== */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .logo {
        font-size: 1.1rem;
    }

    .logo svg {
        width: 32px;
        height: 32px;
    }

    .team-grid {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .stat-card {
        padding: 16px 10px;
    }

    .stat-num {
        font-size: 1.3rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .section-title {
        font-size: 1.15rem;
    }

    .section-sub {
        font-size: 0.85rem;
        padding-left: 14px;
    }

    .card {
        padding: 20px;
    }

    .faq-q {
        padding: 15px 16px;
        font-size: 0.88rem;
    }

    .faq-a {
        padding: 0 16px;
    }

    .faq-item.open .faq-a {
        padding: 0 16px 16px;
    }
}

/* ==========================================================================
   打印样式
   ========================================================================== */
@media print {
    .site-header,
    .banner,
    .back-top,
    .reading-progress,
    .theme-toggle,
    .mobile-menu-btn,
    .search-box,
    .anchor-nav {
        display: none !important;
    }

    body {
        background: #fff;
        color: #000;
    }

    .card,
    .article-item,
    .faq-item,
    .stat-card {
        border: 1px solid #ccc;
        box-shadow: none;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ==========================================================================
   减少动画偏好
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ==========================================================================
   高对比度模式支持
   ========================================================================== */
@media (prefers-contrast: high) {
    :root {
        --border: #000;
        --text-secondary: #000;
    }

    body.dark-mode {
        --border: #fff;
        --text-secondary: #fff;
    }
}

/* ==========================================================================
   选择文本样式
   ========================================================================== */
::selection {
    background: rgba(43, 108, 158, 0.25);
    color: var(--text);
}

body.dark-mode ::selection {
    background: rgba(74, 159, 212, 0.35);
    color: #fff;
}

/* ==========================================================================
   滚动条美化
   ========================================================================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-alt);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 5px;
    border: 2px solid var(--bg-alt);
    transition: background-color 0.2s var(--ease);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--brand);
}

body.dark-mode ::-webkit-scrollbar-thumb {
    background: #2a3644;
}

body.dark-mode ::-webkit-scrollbar-thumb:hover {
    background: #4a9fd4;
}

/* Firefox 滚动条 */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--border) var(--bg-alt);
}

body.dark-mode * {
    scrollbar-color: #2a3644 #1a222d;
}

/* ==========================================================================
   焦点可见性（无障碍）
   ========================================================================== */
:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
    border-radius: 4px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
}

/* ==========================================================================
   文本选择与链接
   ========================================================================== */
a:active {
    opacity: 0.85;
}

/* ==========================================================================
   图片加载占位
   ========================================================================== */
img {
    background: var(--bg-alt);
}

img[data-src] {
    opacity: 0;
    transition: opacity 0.4s var(--ease);
}

img:not([data-src]) {
    opacity: 1;
}

/* ==========================================================================
   最后：确保所有过渡在暗色模式切换时平滑
   ========================================================================== */
body,
.site-header,
.card,
.article-item,
.faq-item,
.stat-card,
.team-card,
.contact-item,
.testimonial,
.howto-step,
.anchor-nav,
.mobile-nav,
.search-box,
.theme-toggle,
.mobile-menu-btn,
.footer-col a,
.nav-links a {
    transition-property: background-color, border-color, color, box-shadow, transform, opacity;
    transition-duration: 0.3s;
    transition-timing-function: var(--ease);
}

/* 覆盖特定元素的过渡时长 */
.back-top {
    transition-duration: 0.35s;
}

.banner-slide {
    transition-duration: 0.7s;
}

.card:hover,
.article-item:hover,
.stat-card:hover,
.team-card:hover,
.contact-item:hover,
.testimonial:hover,
.howto-step:hover {
    transition-duration: 0.35s;
}
```