* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6b21a8;
    --primary-light: #a855f7;
    --primary-lighter: #c084fc;
    --primary-soft: #d8b4fe;
    --primary-bg: #f3e8ff;
    --accent: #ec4899;
    --accent-soft: #fbcfe8;
    --bg: #faf8ff;
    --bg-card: #ffffff;
    --bg-nav: rgba(255, 255, 255, 0.88);
    --text: #1e1b2e;
    --text-heading: #2e1065;
    --text-sub: #4b5563;
    --text-muted: #6b7280;
    --text-faint: #9ca3af;
    --border: #f3e8ff;
    --border-soft: #ede9fe;
    --shadow-sm: 0 4px 16px rgba(107, 33, 168, 0.06);
    --shadow-md: 0 8px 24px rgba(107, 33, 168, 0.12);
    --shadow-lg: 0 12px 40px rgba(107, 33, 168, 0.18);
    --radius: 16px;
    --radius-sm: 14px;
    --radius-lg: 20px;
    --radius-pill: 24px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
    --primary: #c084fc;
    --primary-light: #d8b4fe;
    --primary-lighter: #e9d5ff;
    --primary-soft: #4c3b6e;
    --primary-bg: #2d2348;
    --accent: #f472b6;
    --accent-soft: #4a1d3d;
    --bg: #0f0d17;
    --bg-card: #1a1625;
    --bg-nav: rgba(15, 13, 23, 0.88);
    --text: #e4e0f0;
    --text-heading: #e9d5ff;
    --text-sub: #b0a8c0;
    --text-muted: #9ca3af;
    --text-faint: #6b7280;
    --border: #2d2348;
    --border-soft: #2d2348;
    --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--bg);
    transition: background-color 0.4s ease, color 0.4s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition), opacity var(--transition);
}

a:hover {
    color: var(--primary-light);
}

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

ul, ol {
    list-style: none;
}

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

::selection {
    background: var(--primary-light);
    color: #fff;
}

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

/* ========== 吸顶导航 ========== */
.sticky-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--bg-nav);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border);
    transition: background-color 0.4s ease, border-color 0.4s ease, box-shadow 0.3s ease;
}

.sticky-nav.scrolled {
    box-shadow: 0 4px 20px rgba(107, 33, 168, 0.08);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    flex-wrap: wrap;
    gap: 8px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #6b21a8 0%, #a855f7 50%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: transform var(--transition), filter var(--transition);
    flex-shrink: 0;
}

.logo:hover {
    transform: scale(1.04);
    filter: brightness(1.1);
}

.nav-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    align-items: center;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-sub);
    position: relative;
    padding: 4px 0;
    transition: color var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
    transition: width var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-shrink: 0;
}

.search-box {
    display: flex;
    border: 1px solid var(--primary-soft);
    border-radius: var(--radius-pill);
    overflow: hidden;
    background: var(--bg-card);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
}

.search-box input {
    border: none;
    outline: none;
    padding: 8px 14px;
    font-size: 0.9rem;
    background: transparent;
    color: var(--text);
    width: 160px;
    transition: width var(--transition);
}

.search-box input::placeholder {
    color: var(--text-faint);
}

.search-box button {
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: filter var(--transition), transform var(--transition);
}

.search-box button:hover {
    filter: brightness(1.12);
}

.search-box button:active {
    transform: scale(0.97);
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--primary-soft);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    font-size: 1.1rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.theme-toggle:hover {
    background: var(--primary-bg);
    transform: rotate(20deg) scale(1.06);
    box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.1);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--primary-soft);
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 1.2rem;
    color: var(--primary);
    transition: background var(--transition), transform var(--transition);
}

.mobile-menu-btn:hover {
    background: var(--primary-bg);
}

.mobile-menu-btn:active {
    transform: scale(0.95);
}

/* ========== 面包屑 ========== */
.breadcrumb {
    padding: 14px 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    animation: fadeIn 0.6s ease;
}

.breadcrumb a {
    color: var(--primary);
    font-weight: 500;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* ========== 轮播Banner ========== */
.banner-carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    margin: 20px 0 40px;
    background: linear-gradient(135deg, #2e1065 0%, #6b21a8 45%, #be185d 100%);
    min-height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    box-shadow: 0 16px 48px rgba(107, 33, 168, 0.3);
    isolation: isolate;
}

.banner-carousel::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(168, 85, 247, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.35) 0%, transparent 50%),
        radial-gradient(circle at 50% 120%, rgba(139, 92, 246, 0.3) 0%, transparent 60%);
    z-index: -1;
    animation: bannerGlow 12s ease-in-out infinite alternate;
}

@keyframes bannerGlow {
    0% { opacity: 0.7; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.08); }
}

.banner-slide {
    display: none;
    padding: 56px 32px;
    position: relative;
    z-index: 1;
}

.banner-slide.active {
    display: block;
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.banner-slide h2 {
    font-size: 2rem;
    margin-bottom: 14px;
    font-weight: 800;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.25);
    line-height: 1.3;
}

.banner-slide p {
    font-size: 1.05rem;
    opacity: 0.92;
    max-width: 700px;
    margin: 0 auto;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.2);
}

.banner-dots {
    position: absolute;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 2;
}

.banner-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), width var(--transition);
}

.banner-dots span:hover {
    background: rgba(255, 255, 255, 0.75);
    transform: scale(1.2);
}

.banner-dots span.active {
    background: #fff;
    width: 26px;
    border-radius: 6px;
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.6);
}

/* ========== 数字动画 ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.stat-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-soft);
}

.stat-item:hover::before {
    opacity: 1;
}

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

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ========== 通用区块 ========== */
.section {
    margin: 50px 0;
}

.section-title {
    font-size: 1.7rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text-heading);
    letter-spacing: -0.02em;
    position: relative;
    display: inline-block;
    padding-bottom: 8px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 56px;
    height: 4px;
    border-radius: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.section-sub {
    color: var(--text-muted);
    margin-bottom: 28px;
    font-size: 0.95rem;
}

/* ========== 卡片 ========== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.card:hover::after {
    transform: scaleX(1);
}

.card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    color: var(--text-heading);
    font-weight: 700;
    letter-spacing: -0.01em;
    transition: color var(--transition);
}

.card:hover h3 {
    color: var(--primary);
}

.card p {
    font-size: 0.92rem;
    color: var(--text-sub);
    line-height: 1.75;
}

.card p strong {
    color: var(--primary);
    font-weight: 600;
}

.card ul {
    font-size: 0.9rem;
}

.card ul li {
    margin-bottom: 8px;
    color: var(--text-sub);
    transition: color var(--transition), transform var(--transition);
}

.card ul li:hover {
    color: var(--primary);
    transform: translateX(4px);
}

.card ul li a {
    color: var(--primary);
    font-weight: 500;
}

/* ========== FAQ ========== */
.faq-item {
    border-bottom: 1px solid var(--border-soft);
    padding: 16px 0;
    transition: border-color var(--transition);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    font-size: 1rem;
    color: var(--text-heading);
    padding: 4px 0;
    transition: color var(--transition);
    user-select: none;
}

.faq-question:hover {
    color: var(--primary);
}

.faq-question span {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--primary-bg);
    color: var(--primary);
    font-size: 1rem;
    font-weight: 700;
    transition: background var(--transition), transform var(--transition), color var(--transition);
}

.faq-question:hover span {
    background: var(--primary);
    color: #fff;
    transform: rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.4s ease, opacity 0.4s ease;
    color: var(--text-sub);
    font-size: 0.92rem;
    line-height: 1.8;
    opacity: 0;
}

.faq-answer.open {
    max-height: 600px;
    padding-top: 12px;
    opacity: 1;
}

/* ========== 文章列表 ========== */
.article-item {
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    padding: 20px 24px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
}

.article-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.article-item:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-soft);
}

.article-item:hover::before {
    transform: scaleY(1);
}

.article-item h4 {
    font-size: 1rem;
    color: var(--text-heading);
    margin-bottom: 4px;
    font-weight: 700;
    transition: color var(--transition);
}

.article-item:hover h4 {
    color: var(--primary);
}

.article-meta {
    font-size: 0.8rem;
    color: var(--text-faint);
}

.article-summary {
    font-size: 0.88rem;
    color: var(--text-sub);
    margin: 6px 0 0;
    line-height: 1.7;
}

.read-more {
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition), color var(--transition);
}

.read-more:hover {
    gap: 10px;
    color: var(--accent);
}

/* ========== HowTo ========== */
.howto-step {
    background: linear-gradient(135deg, var(--primary-bg), transparent);
    border-left: 4px solid var(--primary-light);
    padding: 16px 20px;
    margin-bottom: 14px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.howto-step:hover {
    transform: translateX(6px);
    box-shadow: var(--shadow-sm);
    border-left-color: var(--accent);
}

.howto-step h4 {
    color: var(--text-heading);
    margin-bottom: 6px;
    font-size: 1rem;
    font-weight: 700;
}

.howto-step p {
    font-size: 0.9rem;
    color: var(--text-sub);
    line-height: 1.75;
}

/* ========== 锚点导航 ========== */
.anchor-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0 30px;
}

.anchor-nav a {
    background: var(--primary-bg);
    padding: 7px 18px;
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--primary);
    transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.anchor-nav a:hover {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(107, 33, 168, 0.3);
}

/* ========== 返回顶部 ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border: none;
    font-size: 1.3rem;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(107, 33, 168, 0.45);
    z-index: 900;
    transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.back-to-top.visible {
    display: flex;
    animation: popIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes popIn {
    from { opacity: 0; transform: scale(0.6) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.back-to-top:hover {
    transform: translateY(-4px) scale(1.08);
    box-shadow: 0 10px 28px rgba(107, 33, 168, 0.55);
    filter: brightness(1.1);
}

.back-to-top:active {
    transform: scale(0.95);
}

/* ========== 页脚 ========== */
footer {
    background: linear-gradient(180deg, #1e1b2e 0%, #150f24 100%);
    color: #c4b5fd;
    padding: 50px 0 24px;
    margin-top: 60px;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-light), var(--accent), transparent);
}

body.dark-mode footer {
    background: linear-gradient(180deg, #08060e 0%, #050308 100%);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.footer-grid h4 {
    color: #fff;
    margin-bottom: 14px;
    font-size: 1rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 8px;
}

.footer-grid h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    border-radius: 2px;
}

.footer-grid ul {
    list-style: none;
}

.footer-grid li {
    margin-bottom: 8px;
    font-size: 0.88rem;
}

.footer-grid a {
    color: #c4b5fd;
    transition: color var(--transition), padding-left var(--transition);
    display: inline-block;
}

.footer-grid a:hover {
    color: #fff;
    padding-left: 6px;
}

.footer-grid p {
    font-size: 0.85rem;
    line-height: 1.7;
    color: #a78bfa;
}

.footer-bottom {
    border-top: 1px solid #3b2d5e;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.82rem;
    color: #8b7ab8;
}

/* ========== 滚动动画 ========== */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

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

/* ========== 内联样式辅助 ========== */
body > .container > .section > p {
    color: var(--text-sub);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .nav-links {
        gap: 18px;
    }

    .search-box input {
        width: 130px;
    }
}

@media (max-width: 768px) {
    .nav-inner {
        padding: 10px 0;
    }

    .nav-links {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 8px;
        padding-top: 14px;
        border-top: 1px solid var(--border);
        margin-top: 8px;
    }

    .nav-links.open {
        display: flex;
        animation: fadeInUp 0.3s ease;
    }

    .nav-links a {
        padding: 8px 0;
        width: 100%;
    }

    .nav-links a::after {
        display: none;
    }

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

    .search-box input {
        width: 100px;
        padding: 7px 10px;
        font-size: 0.85rem;
    }

    .search-box button {
        padding: 7px 12px;
        font-size: 0.85rem;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .banner-carousel {
        min-height: 220px;
        border-radius: var(--radius);
        margin: 16px 0 32px;
    }

    .banner-slide {
        padding: 40px 20px;
    }

    .banner-slide h2 {
        font-size: 1.4rem;
    }

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

    .section {
        margin: 36px 0;
    }

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

    .card-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

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

    .article-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 18px 20px;
    }

    .article-item:hover {
        transform: translateY(-4px);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

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

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1.15rem;
    }

    .anchor-nav {
        gap: 8px;
    }

    .anchor-nav a {
        padding: 6px 14px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .logo {
        font-size: 1.25rem;
    }

    .nav-actions {
        gap: 8px;
    }

    .search-box input {
        width: 80px;
    }

    .search-box button {
        padding: 7px 10px;
    }

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

    .banner-slide p {
        font-size: 0.85rem;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .stat-item {
        padding: 18px 10px;
    }

    .stat-number {
        font-size: 1.4rem;
    }

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

    .card {
        padding: 18px;
    }

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

/* ========== 无障碍与动效偏好 ========== */
@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;
    }
}

@media print {
    .sticky-nav,
    .back-to-top,
    .theme-toggle,
    .mobile-menu-btn,
    .search-box {
        display: none !important;
    }

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