/* ============================================
   LV国际 · 暖杏金辉 设计系统
   Awwwards 获奖风格 · 独特视觉语言
   "精彩无国界" — 温暖·国际·品质
   ============================================ */

/* 基础重置 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    background: #FEFCF8;
    color: #2D4059;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ============================================
   设计变量 (自定义属性)
   ============================================ */
:root {
    --primary: #D4A853;
    --primary-dark: #C0943E;
    --primary-light: #E8C88A;
    --secondary: #2D4059;
    --secondary-light: #3D5A7A;
    --accent: #E8A87C;
    --accent-light: #F5D4BC;
    --cta: #E76F51;
    --cta-hover: #D45D40;
    --bg-warm: #FEFCF8;
    --bg-cream: #FDF6EE;
    --bg-light: #FFF9F2;
    --gold-gradient: linear-gradient(135deg, #D4A853 0%, #E8C88A 50%, #D4A853 100%);
    --warm-gradient: linear-gradient(135deg, #FDF6EE 0%, #FEFCF8 50%, #FFF9F2 100%);
    --shadow-sm: 0 2px 8px rgba(45, 64, 89, 0.06);
    --shadow-md: 0 8px 24px rgba(45, 64, 89, 0.08);
    --shadow-lg: 0 16px 48px rgba(45, 64, 89, 0.12);
    --shadow-gold: 0 8px 24px rgba(212, 168, 83, 0.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --glass-bg: rgba(254, 252, 248, 0.82);
    --glass-border: rgba(212, 168, 83, 0.15);
}

/* ============================================
   核心布局
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 96px 0;
    position: relative;
}

.section:nth-child(even) {
    background: var(--bg-cream);
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gold-gradient);
    border-radius: 2px;
    opacity: 0.0;
    transition: opacity 0.6s;
}

.section:nth-child(even)::before {
    opacity: 0.6;
}

/* ============================================
   导航 — 固定顶部 · 玻璃金辉
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(16px) saturate(1.2);
    -webkit-backdrop-filter: blur(16px) saturate(1.2);
    border-bottom: 1px solid var(--glass-border);
    transition: background 0.4s, box-shadow 0.4s;
}

.site-header.scrolled {
    background: rgba(254, 252, 248, 0.96);
    box-shadow: 0 4px 20px rgba(45, 64, 89, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.35rem;
    text-decoration: none;
    color: var(--secondary);
    letter-spacing: -0.3px;
    transition: opacity 0.3s;
}

.logo:hover {
    opacity: 0.85;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    background: var(--gold-gradient);
    color: #fff;
    font-weight: 700;
    letter-spacing: 0;
    box-shadow: 0 2px 8px rgba(212, 168, 83, 0.3);
}

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

.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--secondary);
    transition: color 0.3s;
    position: relative;
    padding: 4px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold-gradient);
    border-radius: 1px;
    transition: width 0.35s;
}

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

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

.nav-cta {
    padding: 10px 24px !important;
    border-radius: var(--radius-sm) !important;
    color: #fff !important;
    font-weight: 600 !important;
    background: var(--gold-gradient) !important;
    box-shadow: 0 4px 12px rgba(212, 168, 83, 0.3);
    transition: transform 0.3s, box-shadow 0.3s !important;
}

.nav-cta::after {
    display: none !important;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 168, 83, 0.4) !important;
    color: #fff !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--secondary);
    border-radius: 2px;
    transition: 0.3s;
}

/* ============================================
   Hero — 暖杏金辉 · 大气开场
   ============================================ */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--warm-gradient);
    padding-top: 72px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(232, 168, 124, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-content {
    max-width: 720px;
    position: relative;
    z-index: 2;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 50px;
    background: var(--gold-gradient);
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(212, 168, 83, 0.25);
}

.hero h1 {
    font-size: 3.2rem;
    line-height: 1.15;
    margin-bottom: 20px;
    color: var(--secondary);
    font-weight: 800;
    letter-spacing: -0.5px;
}

.hero h1 .highlight {
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.7;
    max-width: 560px;
    margin-bottom: 36px;
    color: var(--secondary);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.hero-image::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid rgba(212, 168, 83, 0.15);
    border-radius: var(--radius-lg);
    pointer-events: none;
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   按钮 — 独特质感
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.3px;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
    pointer-events: none;
}

.btn-primary {
    color: #fff;
    background: var(--gold-gradient);
    box-shadow: 0 4px 16px rgba(212, 168, 83, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 28px rgba(212, 168, 83, 0.45);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary-dark);
}

.btn-outline:hover {
    background: var(--gold-gradient);
    border-color: transparent;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(212, 168, 83, 0.25);
}

/* ============================================
   标签 / 标题
   ============================================ */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 12px;
    position: relative;
    padding-left: 28px;
}

.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 2px;
    background: var(--gold-gradient);
    border-radius: 1px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--secondary);
    letter-spacing: -0.3px;
    line-height: 1.2;
}

.section-desc {
    max-width: 600px;
    opacity: 0.65;
    margin-bottom: 48px;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--secondary);
}

/* ============================================
   卡片网格 — 暖杏光影
   ============================================ */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.category-card {
    border-radius: var(--radius-md);
    padding: 32px 28px;
    background: #fff;
    border: 1px solid rgba(212, 168, 83, 0.12);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gold-gradient);
    opacity: 0;
    transition: opacity 0.4s;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-gold);
    border-color: rgba(212, 168, 83, 0.25);
}

.category-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    font-size: 1.4rem;
    background: var(--bg-cream);
    color: var(--primary-dark);
    transition: all 0.4s;
}

.category-card:hover .card-icon {
    background: var(--gold-gradient);
    color: #fff;
    box-shadow: 0 4px 12px rgba(212, 168, 83, 0.3);
}

.category-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--secondary);
}

.category-card p {
    font-size: 0.9rem;
    opacity: 0.6;
    line-height: 1.6;
    margin-bottom: 16px;
}

.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s;
}

.card-link:hover {
    gap: 12px;
    color: var(--primary-dark);
}

/* ============================================
   特性块 — 图文交错
   ============================================ */
.feature-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.feature-block.reverse {
    direction: rtl;
}

.feature-block.reverse > * {
    direction: ltr;
}

.feature-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    position: relative;
}

.feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid rgba(212, 168, 83, 0.1);
    border-radius: var(--radius-lg);
    pointer-events: none;
}

.feature-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s;
}

.feature-image:hover img {
    transform: scale(1.02);
}

.feature-text {
    position: relative;
}

.feature-text h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--secondary);
}

.feature-text p {
    opacity: 0.65;
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-list {
    list-style: none;
    margin-top: 20px;
}

.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    color: var(--secondary);
}

.feature-list li::before {
    content: '✦';
    font-weight: 700;
    color: var(--primary);
    font-size: 1rem;
    flex-shrink: 0;
}

/* ============================================
   数据条 — 金辉数字
   ============================================ */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-item {
    padding: 32px 20px;
    border-radius: var(--radius-md);
    background: #fff;
    border: 1px solid rgba(212, 168, 83, 0.1);
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--gold-gradient);
    opacity: 0;
    transition: opacity 0.4s;
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-gold);
}

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

.stat-number {
    font-size: 2.6rem;
    font-weight: 800;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.55;
    margin-top: 8px;
    color: var(--secondary);
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* ============================================
   内容墙 — 新闻动态
   ============================================ */
.content-wall {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 28px;
}

.content-wall-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(212, 168, 83, 0.08);
    transition: all var(--transition);
}

.content-wall-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-gold);
    border-color: rgba(212, 168, 83, 0.2);
}

.content-wall-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.5s;
}

.content-wall-item:hover img {
    transform: scale(1.03);
}

.content-wall-body {
    padding: 24px;
}

.content-wall-body .tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
    margin-bottom: 8px;
}

.content-wall-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--secondary);
}

.content-wall-body p {
    font-size: 0.85rem;
    opacity: 0.55;
    line-height: 1.6;
}

/* ============================================
   FAQ — 精致折叠
   ============================================ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid rgba(212, 168, 83, 0.12);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
    background: #fff;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: rgba(212, 168, 83, 0.25);
    box-shadow: var(--shadow-sm);
}

.faq-item .faq-question {
    padding: 18px 24px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--secondary);
    font-size: 1rem;
    transition: color 0.3s;
}

.faq-item .faq-question::after {
    content: '↓';
    font-size: 0.9rem;
    color: var(--primary);
    transition: transform 0.4s;
    font-weight: 300;
}

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

.faq-item .faq-answer {
    padding: 0 24px 18px;
    display: none;
    opacity: 0.6;
    line-height: 1.7;
    color: var(--secondary);
    font-size: 0.95rem;
}

.faq-item.open .faq-answer {
    display: block;
    animation: fadeInUp 0.4s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 0.6;
        transform: translateY(0);
    }
}

/* ============================================
   CTA横幅 — 金色号召
   ============================================ */
.cta-banner {
    padding: 64px 48px;
    text-align: center;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--secondary) 0%, #1A2A3A 50%, var(--secondary-light) 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(212, 168, 83, 0.12) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(232, 168, 124, 0.08) 0%, transparent 60%);
    border-radius: 50%;
    pointer-events: none;
}

.cta-banner h2 {
    color: #fff;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 12px;
    position: relative;
    z-index: 2;
}

.cta-banner p {
    color: rgba(255, 255, 255, 0.7);
    max-width: 520px;
    margin: 0 auto 28px;
    font-size: 1.05rem;
    position: relative;
    z-index: 2;
}

.cta-banner .btn-primary {
    background: var(--gold-gradient);
    color: var(--secondary);
    box-shadow: 0 4px 20px rgba(212, 168, 83, 0.35);
    position: relative;
    z-index: 2;
}

.cta-banner .btn-primary:hover {
    box-shadow: 0 8px 30px rgba(212, 168, 83, 0.5);
    transform: translateY(-3px);
}

/* ============================================
   页脚 — 暖杏底色
   ============================================ */
.site-footer {
    padding: 64px 0 32px;
    background: var(--bg-cream);
    border-top: 1px solid rgba(212, 168, 83, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-brand .logo {
    font-size: 1.1rem;
}

.footer-brand p {
    font-size: 0.9rem;
    opacity: 0.55;
    line-height: 1.7;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--secondary);
    letter-spacing: 0.5px;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    text-decoration: none;
    font-size: 0.85rem;
    color: var(--secondary);
    opacity: 0.55;
    transition: opacity 0.3s, padding-left 0.3s;
    display: inline-block;
}

.footer-col a:hover {
    opacity: 0.9;
    padding-left: 4px;
    color: var(--primary-dark);
}

.footer-bottom {
    border-top: 1px solid rgba(212, 168, 83, 0.12);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.8rem;
    opacity: 0.45;
    color: var(--secondary);
    letter-spacing: 0.3px;
}

/* ============================================
   工具类
   ============================================ */
.text-accent {
    color: var(--primary);
    font-weight: 600;
}

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

.text-center .section-desc {
    margin-left: auto;
    margin-right: auto;
}

.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    opacity: 0.55;
    line-height: 1.7;
    font-size: 0.95rem;
}

.mt-0 {
    margin-top: 0 !important;
}

.mb-0 {
    margin-bottom: 0 !important;
}

/* 金色装饰分隔线 */
.divider-gold {
    width: 60px;
    height: 3px;
    background: var(--gold-gradient);
    border-radius: 2px;
    margin: 24px 0;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.6rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: 60vh;
        padding-top: 88px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .feature-block {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .feature-block.reverse {
        direction: ltr;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .stat-number {
        font-size: 2rem;
    }

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

    .main-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        padding: 24px 28px;
        gap: 16px;
        border-bottom: 1px solid var(--glass-border);
        box-shadow: var(--shadow-md);
    }

    .main-nav.open a {
        padding: 8px 0;
        font-size: 1rem;
    }

    .nav-cta {
        text-align: center;
        padding: 12px 24px !important;
    }

    .cta-banner {
        padding: 40px 24px;
    }

    .cta-banner h2 {
        font-size: 1.5rem;
    }

    .cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 20px;
    }

    .content-wall {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 20px;
    }

    .section {
        padding: 64px 0;
    }

    .faq-item .faq-question {
        padding: 14px 18px;
        font-size: 0.95rem;
    }

    .faq-item .faq-answer {
        padding: 0 18px 14px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .cards-grid,
    .content-wall,
    .stats-bar {
        grid-template-columns: 1fr;
    }

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

    .stats-bar {
        grid-template-columns: 1fr 1fr;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .section {
        padding: 48px 0;
    }

    .cta-banner {
        padding: 32px 20px;
    }

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

    .logo {
        font-size: 1.1rem;
    }

    .header-inner {
        height: 64px;
    }

    .main-nav.open {
        top: 64px;
    }

    .stat-item {
        padding: 20px 16px;
    }

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

    .category-card {
        padding: 24px 20px;
    }

    .feature-block {
        gap: 28px;
    }
}

/* ============================================
   打印样式
   ============================================ */
@media print {
    .site-header {
        position: relative;
        background: #fff;
        border-bottom: 1px solid #ddd;
    }

    .hero {
        min-height: auto;
        padding: 40px 0;
    }

    .btn,
    .nav-cta,
    .menu-toggle {
        display: none !important;
    }

    .section {
        padding: 32px 0;
    }

    .stats-bar {
        break-inside: avoid;
    }

    .content-wall-item,
    .category-card {
        break-inside: avoid;
    }
}