:root {
    --bg: #f9f7f4;
    --surface: #ffffff;
    --surface-glass: rgba(255, 255, 255, 0.72);
    --text: #1e1e2f;
    --text-secondary: #4a4a5a;
    --primary: #6c5ce7;
    --primary-light: #a29bfe;
    --primary-dark: #5546c9;
    --accent: #fd79a8;
    --accent-soft: #ffeaa7;
    --border: #e8e6e3;
    --border-glass: rgba(255, 255, 255, 0.35);
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 8px 32px rgba(108, 92, 231, 0.25);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --transition: 0.25s ease;
    --gradient-primary: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #fd79a8 100%);
    --gradient-soft: linear-gradient(135deg, rgba(108, 92, 231, 0.08) 0%, rgba(253, 121, 168, 0.08) 100%);
    --gradient-banner-1: linear-gradient(135deg, #f3f0ff 0%, #e8e4ff 40%, #ffeef5 100%);
    --gradient-banner-2: linear-gradient(135deg, #e8f4ff 0%, #f0e8ff 50%, #fff0e8 100%);
    --gradient-banner-3: linear-gradient(135deg, #fff0f5 0%, #f0f0ff 50%, #e8fff4 100%);
}

[data-theme="dark"] {
    --bg: #121220;
    --surface: #1e1e2f;
    --surface-glass: rgba(30, 30, 47, 0.78);
    --text: #f0f0f5;
    --text-secondary: #b0b0c0;
    --border: #2d2d44;
    --border-glass: rgba(255, 255, 255, 0.08);
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55);
    --shadow-glow: 0 8px 32px rgba(162, 155, 254, 0.2);
    --primary: #a29bfe;
    --primary-light: #6c5ce7;
    --primary-dark: #8c83f0;
    --accent: #fd79a8;
    --gradient-banner-1: linear-gradient(135deg, #1a1a30 0%, #221e3a 50%, #2a1e30 100%);
    --gradient-banner-2: linear-gradient(135deg, #1a2030 0%, #221e3a 50%, #302a1e 100%);
    --gradient-banner-3: linear-gradient(135deg, #2a1e28 0%, #1e1e38 50%, #1e3028 100%);
}

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

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

body {
    font-family: var(--font);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.7;
    transition: background-color var(--transition), color var(--transition);
    padding-top: 70px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

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

/* ===== 导航吸顶 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--surface-glass);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
    z-index: 1000;
    transition: background-color var(--transition), box-shadow var(--transition);
    border-bottom: 1px solid var(--border-glass);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: transform var(--transition), opacity var(--transition);
}

.logo:hover {
    transform: scale(1.03);
    opacity: 0.9;
}

.logo svg {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    box-shadow: var(--shadow-glow);
}

.nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition);
    position: relative;
    padding: 4px 0;
}

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

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

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

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

.search-box {
    display: flex;
    align-items: center;
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 6px 6px 6px 16px;
    border: 1px solid var(--border);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.12);
}

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 0.9rem;
    color: var(--text);
    width: 140px;
    font-family: var(--font);
}

.search-box input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.search-box button {
    background: var(--gradient-primary);
    border: none;
    border-radius: 30px;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #fff;
    transition: transform var(--transition), box-shadow var(--transition);
}

.search-box button:hover {
    transform: scale(1.08);
    box-shadow: var(--shadow-glow);
}

.theme-toggle {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text);
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.theme-toggle:hover {
    background: var(--border);
    transform: rotate(20deg) scale(1.05);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text);
    padding: 4px 8px;
    transition: transform var(--transition);
}

.mobile-menu-btn:hover {
    transform: scale(1.1);
}

/* ===== 面包屑 ===== */
.breadcrumb {
    max-width: 1200px;
    margin: 20px auto 0;
    padding: 0 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

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

.breadcrumb span {
    margin: 0 8px;
    opacity: 0.6;
}

/* ===== Banner轮播 ===== */
.banner {
    position: relative;
    max-width: 1200px;
    margin: 30px auto 40px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--surface);
    height: 380px;
    isolation: isolate;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 40px 60px;
    gap: 30px;
    pointer-events: none;
    transform: scale(1.02);
}

.banner-slide:nth-child(1) {
    background: var(--gradient-banner-1);
}

.banner-slide:nth-child(2) {
    background: var(--gradient-banner-2);
}

.banner-slide:nth-child(3) {
    background: var(--gradient-banner-3);
}

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

.banner-content {
    flex: 1;
    animation: fadeInUp 0.8s ease both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.banner-content h2 {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    line-height: 1.3;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.banner-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 24px;
}

.banner-content .btn {
    display: inline-block;
    background: var(--gradient-primary);
    color: #fff;
    padding: 12px 32px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: transform var(--transition), box-shadow var(--transition);
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.3);
    position: relative;
    overflow: hidden;
}

.banner-content .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.banner-content .btn:hover::before {
    left: 100%;
}

.banner-content .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.45);
}

.banner-illustration {
    flex: 0 0 320px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: floatIllustration 6s ease-in-out infinite;
}

@keyframes floatIllustration {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

.banner-illustration svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 10px 30px rgba(108, 92, 231, 0.2));
}

.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.banner-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(108, 92, 231, 0.25);
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), width var(--transition);
    border: 2px solid transparent;
}

.banner-dots span:hover {
    background: var(--primary-light);
}

.banner-dots span.active {
    background: var(--primary);
    transform: scale(1.2);
    width: 28px;
    border-radius: 6px;
}

/* ===== 通用容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 60px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width 0.4s ease;
}

.section-title:hover::after {
    width: 100%;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 700px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
}

/* ===== 卡片 ===== */
.card {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    backdrop-filter: blur(16px) saturate(160%);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-glass);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

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

.card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--text);
    transition: color var(--transition);
}

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

.card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

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

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: #fff;
    box-shadow: var(--shadow-glow);
    transition: transform var(--transition);
}

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

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ===== 文章列表 ===== */
.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.article-item {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-sm);
    padding: 24px;
    border: 1px solid var(--border-glass);
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    position: relative;
}

.article-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.article-item .meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.article-item .meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.article-item .meta span:last-child {
    color: var(--primary);
    font-weight: 600;
    background: var(--gradient-soft);
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
}

.article-item h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
    transition: color var(--transition);
}

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

.article-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.read-more {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap var(--transition), color var(--transition);
}

.read-more:hover {
    gap: 8px;
    color: var(--accent);
}

/* ===== FAQ ===== */
.faq-item {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    border: 1px solid var(--border-glass);
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-light);
}

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

.faq-question {
    padding: 18px 24px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text);
    transition: background var(--transition), color var(--transition);
    user-select: none;
    gap: 16px;
}

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

.faq-question .arrow {
    transition: transform var(--transition);
    font-size: 1.2rem;
    color: var(--primary);
    flex-shrink: 0;
}

.faq-item.open .faq-question .arrow {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 24px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.faq-item.open .faq-answer {
    max-height: 400px;
    padding: 0 24px 20px;
}

/* ===== HowTo ===== */
.howto-step {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
    align-items: flex-start;
    transition: transform var(--transition);
}

.howto-step:hover {
    transform: translateX(6px);
}

.step-number {
    flex: 0 0 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: var(--shadow-glow);
    transition: transform var(--transition);
}

.howto-step:hover .step-number {
    transform: scale(1.12);
}

.step-content h4 {
    font-size: 1.1rem;
    margin-bottom: 6px;
    color: var(--text);
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition), box-shadow var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px) scale(1.08);
    box-shadow: 0 8px 30px rgba(108, 92, 231, 0.55);
}

/* ===== 页脚 ===== */
footer {
    background: var(--surface-glass);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-top: 1px solid var(--border-glass);
    padding: 50px 0 30px;
    margin-top: 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 36px;
    margin-bottom: 36px;
}

.footer-col h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text);
    position: relative;
    padding-bottom: 8px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

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

.footer-col li {
    margin-bottom: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition), padding-left var(--transition);
    display: inline-block;
}

.footer-col a:hover {
    color: var(--primary);
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    gap: 12px;
}

.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 16px;
    transition: color var(--transition);
}

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

/* ===== 滚动动画 ===== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    will-change: opacity, transform;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .banner-content h2 {
        font-size: 2rem;
    }
    .banner-illustration {
        flex: 0 0 260px;
        height: 230px;
    }
    .nav-links {
        gap: 20px;
    }
    .nav-links a {
        font-size: 0.88rem;
    }
}

@media (max-width: 900px) {
    .banner {
        height: auto;
        min-height: 320px;
    }
    .banner-slide {
        flex-direction: column;
        padding: 30px;
        text-align: center;
        position: relative;
    }
    .banner-slide.active {
        position: relative;
    }
    .banner-slide:not(.active) {
        position: absolute;
    }
    .banner-illustration {
        flex: 0 0 200px;
        height: 180px;
    }
    .banner-content h2 {
        font-size: 1.8rem;
    }
    .banner-content p {
        margin-left: auto;
        margin-right: auto;
    }
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--surface-glass);
        -webkit-backdrop-filter: blur(20px);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        animation: slideDown 0.3s ease;
    }
    .nav-links.open {
        display: flex;
    }
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    .mobile-menu-btn {
        display: block;
    }
    .search-box {
        display: none;
    }
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .grid-3 {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
}

@media (max-width: 600px) {
    body {
        padding-top: 64px;
    }
    .nav-container {
        height: 64px;
        padding: 0 16px;
    }
    .logo {
        font-size: 1.3rem;
    }
    .logo svg {
        width: 28px;
        height: 28px;
    }
    .banner {
        margin: 16px auto 24px;
        border-radius: var(--radius);
    }
    .banner-content h2 {
        font-size: 1.4rem;
    }
    .banner-content p {
        font-size: 0.95rem;
    }
    .banner-content .btn {
        padding: 10px 24px;
        font-size: 0.9rem;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .section-subtitle {
        font-size: 0.95rem;
        margin-bottom: 28px;
    }
    .stat-number {
        font-size: 2rem;
    }
    .container {
        padding: 0 16px;
    }
    .banner-slide {
        padding: 20px;
    }
    .banner-illustration {
        flex: 0 0 160px;
        height: 140px;
    }
    .card {
        padding: 24px 20px;
    }
    .article-list {
        grid-template-columns: 1fr;
    }
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
        font-size: 1.2rem;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .footer-bottom a {
        margin: 0 8px;
    }
    section {
        padding: 40px 0;
    }
    section[style] {
        padding: 40px 20px !important;
    }
}

@media (max-width: 380px) {
    .banner-content h2 {
        font-size: 1.2rem;
    }
    .logo {
        font-size: 1.1rem;
        gap: 6px;
    }
    .logo svg {
        width: 24px;
        height: 24px;
    }
    .nav-actions {
        gap: 8px;
    }
    .theme-toggle {
        width: 34px;
        height: 34px;
    }
}

/* ===== 打印样式 ===== */
@media print {
    .navbar,
    .back-to-top,
    .banner-dots,
    .search-box,
    .theme-toggle,
    .mobile-menu-btn {
        display: none !important;
    }
    body {
        padding-top: 0;
        background: #fff;
        color: #000;
    }
    .card,
    .article-item,
    .faq-item {
        box-shadow: none;
        border: 1px solid #ddd;
        break-inside: avoid;
    }
    .fade-up {
        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;
    }
    .banner-illustration {
        animation: none;
    }
    .fade-up {
        opacity: 1;
        transform: none;
    }
}