/* ============================================
   N1国际 设计系统 — 琉璃雅韵
   "连接世界，光影流动"
   ============================================ */

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

body {
    font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    overflow-x: hidden;
    background: #F7F4F0;
    color: #2C3333;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #F0ECE6;
}
::-webkit-scrollbar-thumb {
    background: #B8A99A;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #9E8F80;
}

/* 选中文本 */
::selection {
    background: #D4A574;
    color: #fff;
}

/* ============================================
   容器 & 区块
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.section:nth-child(even) {
    background: #F0ECE6;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, #D4A574, transparent);
    border-radius: 2px;
    opacity: 0.4;
}

/* ============================================
   导航 — 琉璃透明
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(247, 244, 240, 0.88);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid rgba(180, 160, 140, 0.15);
    transition: background 0.4s;
}

.site-header.scrolled {
    background: rgba(247, 244, 240, 0.96);
    box-shadow: 0 2px 32px rgba(180, 160, 140, 0.08);
}

.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: 700;
    font-size: 1.25rem;
    text-decoration: none;
    color: #2C3333;
    letter-spacing: 0.5px;
    transition: opacity 0.2s;
}

.logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    background: linear-gradient(135deg, #6B9E9E, #8FBFAF);
    color: #fff;
    box-shadow: 0 2px 12px rgba(107, 158, 158, 0.25);
    transition: transform 0.3s;
}

.logo:hover .logo-icon {
    transform: rotate(-3deg) scale(1.05);
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.main-nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: #4A4A4A;
    transition: color 0.3s, transform 0.2s;
    position: relative;
    letter-spacing: 0.3px;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #6B9E9E, #D4A574);
    transition: width 0.35s ease;
    border-radius: 1px;
}

.main-nav a:hover {
    color: #6B9E9E;
}

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

.nav-cta {
    padding: 10px 24px !important;
    border-radius: 50px !important;
    background: linear-gradient(135deg, #6B9E9E, #8FBFAF);
    color: #fff !important;
    font-weight: 600 !important;
    box-shadow: 0 4px 16px rgba(107, 158, 158, 0.25);
    transition: transform 0.3s, box-shadow 0.3s !important;
}

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

.nav-cta:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 28px rgba(107, 158, 158, 0.35) !important;
    color: #fff !important;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #2C3333;
    padding: 8px;
    border-radius: 8px;
    transition: background 0.2s;
}

.menu-toggle:hover {
    background: rgba(0, 0, 0, 0.04);
}

/* ============================================
   Hero — 大标题 + 光影
   ============================================ */
.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 72px;
    background: linear-gradient(165deg, #F7F4F0 0%, #F0ECE6 40%, #E8E2DA 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(107, 158, 158, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(212, 165, 116, 0.06) 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: 600;
    letter-spacing: 3px;
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, rgba(107, 158, 158, 0.12), rgba(212, 165, 116, 0.12));
    color: #6B9E9E;
    border: 1px solid rgba(107, 158, 158, 0.15);
    text-transform: uppercase;
}

.hero h1 {
    font-size: 3.2rem;
    line-height: 1.15;
    margin-bottom: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #1E2828;
    background: linear-gradient(135deg, #1E2828 30%, #6B9E9E 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.15rem;
    color: #5A5A5A;
    max-width: 560px;
    margin-bottom: 36px;
    line-height: 1.7;
    font-weight: 400;
}

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

.hero-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(180, 160, 140, 0.15);
    position: relative;
}

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

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

/* ============================================
   按钮 — 琉璃质感
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.35s ease;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: linear-gradient(135deg, #6B9E9E, #8FBFAF);
    color: #fff;
    box-shadow: 0 4px 20px rgba(107, 158, 158, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 36px rgba(107, 158, 158, 0.4);
}

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

.btn-outline {
    background: transparent;
    border: 1.5px solid #C4B5A5;
    color: #3D3D3D;
}

.btn-outline:hover {
    border-color: #6B9E9E;
    color: #6B9E9E;
    background: rgba(107, 158, 158, 0.04);
    transform: translateY(-2px);
}

/* ============================================
   标签 / 标题
   ============================================ */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: 14px;
    text-transform: uppercase;
    color: #9E8F80;
    position: relative;
    padding-left: 40px;
}

.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 2px;
    background: linear-gradient(90deg, #D4A574, transparent);
    border-radius: 1px;
}

.section-title {
    font-size: 2.4rem;
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.3px;
    color: #1E2828;
    line-height: 1.2;
}

.section-desc {
    max-width: 600px;
    color: #6A6A6A;
    margin-bottom: 48px;
    font-size: 1.05rem;
    line-height: 1.7;
}

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

.category-card {
    border-radius: 16px;
    padding: 32px 28px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(200, 185, 170, 0.2);
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    box-shadow: 0 2px 12px rgba(180, 160, 140, 0.06);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6B9E9E, #D4A574, #C8858B);
    opacity: 0;
    transition: opacity 0.4s;
}

.category-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(180, 160, 140, 0.15);
    border-color: rgba(107, 158, 158, 0.2);
    background: rgba(255, 255, 255, 0.85);
}

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

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    font-size: 1.4rem;
    background: linear-gradient(135deg, rgba(107, 158, 158, 0.1), rgba(212, 165, 116, 0.1));
    color: #6B9E9E;
    transition: transform 0.3s;
}

.category-card:hover .card-icon {
    transform: scale(1.05) rotate(-2deg);
}

.category-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    color: #1E2828;
    font-weight: 700;
}

.category-card p {
    color: #6A6A6A;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.card-link {
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    color: #6B9E9E;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.3s;
}

.card-link:hover {
    gap: 12px;
    color: #5A8B8B;
}

.card-link::after {
    content: '→';
    transition: transform 0.3s;
}

.card-link:hover::after {
    transform: translateX(4px);
}

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

.feature-image {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(180, 160, 140, 0.12);
    position: relative;
}

.feature-image::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    pointer-events: none;
}

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

.feature-image:hover img {
    transform: scale(1.03);
}

.feature-text {
    padding: 20px 0;
}

.feature-text .section-title {
    margin-bottom: 20px;
}

.feature-text .section-desc {
    margin-bottom: 28px;
}

.feature-list {
    list-style: none;
    margin-top: 24px;
}

.feature-list li {
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: #3D3D3D;
    border-bottom: 1px solid rgba(200, 185, 170, 0.15);
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list li::before {
    content: '✦';
    font-weight: 400;
    color: #D4A574;
    font-size: 0.85rem;
}

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

.stat-item {
    padding: 32px 20px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(200, 185, 170, 0.15);
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 3px;
    background: linear-gradient(90deg, transparent, #D4A574, transparent);
    border-radius: 2px;
    opacity: 0;
    transition: opacity 0.4s;
}

.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(180, 160, 140, 0.1);
    background: rgba(255, 255, 255, 0.8);
}

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

.stat-number {
    font-size: 2.6rem;
    font-weight: 800;
    color: #1E2828;
    line-height: 1;
    letter-spacing: -1px;
    margin-bottom: 4px;
    background: linear-gradient(135deg, #6B9E9E, #8FBFAF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: #8A7A6A;
    margin-top: 8px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

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

.content-wall-item {
    border-radius: 16px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(200, 185, 170, 0.15);
    transition: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.content-wall-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(180, 160, 140, 0.12);
    border-color: rgba(107, 158, 158, 0.2);
    background: rgba(255, 255, 255, 0.8);
}

.content-wall-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
    transition: transform 0.6s;
}

.content-wall-item:hover img {
    transform: scale(1.04);
}

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

.content-wall-body h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: #1E2828;
    font-weight: 700;
}

.content-wall-body p {
    color: #6A6A6A;
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.content-wall-body .card-link {
    font-size: 0.8rem;
}

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

.faq-item {
    border: 1px solid rgba(200, 185, 170, 0.2);
    border-radius: 14px;
    margin-bottom: 10px;
    overflow: hidden;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: rgba(107, 158, 158, 0.2);
    background: rgba(255, 255, 255, 0.7);
}

.faq-item .faq-question {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #2C3333;
    transition: color 0.3s;
}

.faq-item .faq-question::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 300;
    color: #B8A99A;
    transition: transform 0.4s, color 0.3s;
}

.faq-item.open .faq-question::after {
    transform: rotate(45deg);
    color: #6B9E9E;
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    display: none;
    color: #6A6A6A;
    font-size: 0.92rem;
    line-height: 1.7;
}

.faq-item.open .faq-answer {
    display: block;
    animation: faqFade 0.35s ease;
}

@keyframes faqFade {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.faq-item.open .faq-question {
    color: #6B9E9E;
}

/* ============================================
   CTA 横幅
   ============================================ */
.cta-banner {
    padding: 64px 40px;
    text-align: center;
    border-radius: 20px;
    background: linear-gradient(135deg, #6B9E9E 0%, #8FBFAF 40%, #7BA7A7 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(107, 158, 158, 0.25);
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-banner h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: #fff;
    position: relative;
    z-index: 1;
}

.cta-banner p {
    max-width: 500px;
    margin: 0 auto 28px;
    opacity: 0.9;
    font-size: 1rem;
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary {
    background: #fff;
    color: #6B9E9E;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 1;
}

.cta-banner .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.15);
}

/* ============================================
   页脚
   ============================================ */
.site-footer {
    padding: 64px 0 28px;
    background: #2C3333;
    color: rgba(255, 255, 255, 0.85);
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6B9E9E, #D4A574, #C8858B);
    opacity: 0.3;
}

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

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
    max-width: 300px;
    line-height: 1.7;
}

.footer-col h5 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
    color: #D4A574;
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.88rem;
    transition: color 0.3s, padding-left 0.3s;
    display: inline-block;
}

.footer-col ul a:hover {
    color: #D4A574;
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: 48px;
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.5px;
}

/* ============================================
   工具类
   ============================================ */
.text-accent {
    color: #D4A574;
}

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

.seo-description {
    max-width: 600px;
    margin: 0 auto 48px;
    color: #6A6A6A;
    font-size: 1rem;
    line-height: 1.7;
}

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

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

/* ============================================
   装饰性分割线
   ============================================ */
.divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #D4A574, transparent);
    border-radius: 2px;
    margin: 24px 0;
}

.divider.center {
    margin: 24px auto;
}

/* ============================================
   额外：标签 / 徽章
   ============================================ */
.badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    background: rgba(107, 158, 158, 0.1);
    color: #6B9E9E;
    border: 1px solid rgba(107, 158, 158, 0.15);
}

/* ============================================
   响应式设计
   ============================================ */

/* 平板 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.6rem;
    }
    .section-title {
        font-size: 2rem;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .footer-grid > :first-child {
        grid-column: 1 / -1;
    }
}

/* 手机横屏 & 平板竖屏 */
@media (max-width: 768px) {
    .section {
        padding: 72px 0;
    }

    .header-inner {
        height: 64px;
    }

    .main-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
    }

    .main-nav.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        width: 100%;
        background: rgba(247, 244, 240, 0.98);
        backdrop-filter: blur(16px);
        padding: 24px 32px;
        gap: 16px;
        border-bottom: 1px solid rgba(200, 185, 170, 0.15);
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
    }

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

    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

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

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

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

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

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

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

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

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

    .footer-grid > :first-child {
        grid-column: 1 / -1;
    }

    .cta-banner {
        padding: 48px 24px;
    }

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

    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }

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

/* 手机竖屏 */
@media (max-width: 480px) {
    .section {
        padding: 56px 0;
    }

    .hero {
        padding: 90px 0 48px;
    }

    .hero h1 {
        font-size: 1.7rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

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

    .stats-bar {
        gap: 12px;
    }

    .stat-item {
        padding: 24px 16px;
    }

    .stat-number {
        font-size: 1.8rem;
    }

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

    .footer-bottom {
        margin-top: 32px;
        padding-top: 16px;
    }

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

    .content-wall-body {
        padding: 18px;
    }

    .faq-item .faq-question {
        padding: 16px 18px;
        font-size: 0.92rem;
    }

    .faq-item .faq-answer {
        padding: 0 18px 16px;
    }

    .cta-banner {
        padding: 36px 20px;
        border-radius: 14px;
    }

    .cta-banner h2 {
        font-size: 1.3rem;
    }

    .hero-buttons .btn {
        padding: 12px 24px;
        font-size: 0.85rem;
    }

    .section-label {
        font-size: 0.7rem;
        padding-left: 32px;
    }

    .section-label::before {
        width: 20px;
    }
}

/* ============================================
   微交互动画
   ============================================ */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-6px);
    }
}

.float-animation {
    animation: float 4s ease-in-out infinite;
}

/* 卡片入场动画 */
@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.cards-grid .category-card:nth-child(1) {
    animation: cardFadeIn 0.6s ease 0.1s both;
}
.cards-grid .category-card:nth-child(2) {
    animation: cardFadeIn 0.6s ease 0.2s both;
}
.cards-grid .category-card:nth-child(3) {
    animation: cardFadeIn 0.6s ease 0.3s both;
}
.cards-grid .category-card:nth-child(4) {
    animation: cardFadeIn 0.6s ease 0.4s both;
}
.cards-grid .category-card:nth-child(5) {
    animation: cardFadeIn 0.6s ease 0.5s both;
}
.cards-grid .category-card:nth-child(6) {
    animation: cardFadeIn 0.6s ease 0.6s both;
}

/* 统计数字动画 */
.stat-item {
    animation: cardFadeIn 0.6s ease both;
}

.stat-item:nth-child(1) {
    animation-delay: 0.1s;
}
.stat-item:nth-child(2) {
    animation-delay: 0.2s;
}
.stat-item:nth-child(3) {
    animation-delay: 0.3s;
}
.stat-item:nth-child(4) {
    animation-delay: 0.4s;
}

/* ============================================
   辅助：玻璃卡片变体
   ============================================ */
.glass-card {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s;
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.7);
    box-shadow: 0 8px 32px rgba(180, 160, 140, 0.1);
}

/* ============================================
   打印样式
   ============================================ */
@media print {
    .site-header {
        position: relative;
        background: #fff;
        border-bottom: 1px solid #ddd;
    }
    .hero {
        background: #fff;
        min-height: auto;
        padding: 40px 0;
    }
    .section:nth-child(even) {
        background: #f9f9f9;
    }
    .btn,
    .nav-cta {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    .category-card,
    .content-wall-item,
    .faq-item {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
        background: #fff;
    }
    .stat-number {
        -webkit-text-fill-color: #1E2828;
    }
    .hero h1 {
        -webkit-text-fill-color: #1E2828;
    }
    .cta-banner {
        background: #6B9E9E !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}