/* ============================================
   Zettlr 官方网站样式表
   域名: www.zettl.cn
   风格: 扁平现代专业
   ============================================ */

/* CSS 变量 */
:root {
    --primary: #1a9f6c;
    --primary-dark: #0d7a52;
    --primary-light: #e8f5f0;
    --accent: #2dd4a0;
    --bg: #ffffff;
    --bg-gray: #f6f8f7;
    --text: #1a1a2e;
    --text-gray: #5a6578;
    --text-light: #8896a8;
    --border: #e2e8e5;
    --shadow: 0 4px 24px rgba(26, 159, 108, 0.08);
    --shadow-lg: 0 12px 40px rgba(26, 159, 108, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

/* 导航 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.4rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

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

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

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

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

.nav-cta {
    background: var(--primary);
    color: white !important;
    padding: 10px 24px !important;
    border-radius: 8px;
    font-weight: 600;
}

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

.nav-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 159, 108, 0.3);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 4px 16px rgba(26, 159, 108, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(26, 159, 108, 0.4);
    color: white;
}

.btn-secondary {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.1rem;
    border-radius: var(--radius);
}

/* Hero */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(180deg, var(--bg-gray) 0%, var(--bg) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(26, 159, 108, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-gray);
    margin-bottom: 36px;
    max-width: 520px;
}

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

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.hero-stat {
    text-align: left;
}

.hero-stat .num {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    font-family: var(--font-mono);
}

.hero-stat .label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

.hero-visual {
    position: relative;
}

.hero-visual .editor-mockup {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

.editor-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-gray);
    border-bottom: 1px solid var(--border);
}

.editor-header .dot-r { width: 12px; height: 12px; border-radius: 50%; background: #ff5f57; }
.editor-header .dot-y { width: 12px; height: 12px; border-radius: 50%; background: #febc2e; }
.editor-header .dot-g { width: 12px; height: 12px; border-radius: 50%; background: #28c840; }

.editor-body {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--text-gray);
}

.editor-body .md-h1 { color: var(--primary); font-weight: 700; font-size: 1.1rem; }
.editor-body .md-h2 { color: var(--text); font-weight: 600; margin-top: 12px; }
.editor-body .md-link { color: var(--primary); }
.editor-body .md-tag { color: var(--accent); background: var(--primary-light); padding: 1px 6px; border-radius: 4px; font-size: 0.75rem; }
.editor-body .md-cite { color: #c0392b; }

/* 区块标题 */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-desc {
    color: var(--text-gray);
    font-size: 1.05rem;
}

/* 使用场景 */
.scenarios {
    background: var(--bg-gray);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.scenario-card {
    background: white;
    border-radius: var(--radius);
    padding: 40px 32px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: var(--transition);
}

.scenario-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.scenario-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 20px;
}

.scenario-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.scenario-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 功能特性 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.feature-item {
    display: flex;
    gap: 20px;
    padding: 32px;
    background: white;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.feature-item:hover {
    box-shadow: var(--shadow);
    border-color: var(--primary);
}

.feature-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
}

.feature-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

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

/* 用户评价 */
.testimonials {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-gray) 100%);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: white;
    border-radius: var(--radius);
    padding: 36px;
    border: 1px solid var(--border);
    position: relative;
}

.testimonial-card .quote-icon {
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: 8px;
}

.testimonial-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 24px;
}

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

.testimonial-author .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
}

.testimonial-author .name {
    font-weight: 700;
    font-size: 0.95rem;
}

.testimonial-author .role {
    font-size: 0.8rem;
    color: var(--text-light);
}

.stars {
    color: #f59e0b;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

/* CTA 区域 */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -150px;
    left: -150px;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 50%;
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 36px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .btn {
    background: white;
    color: var(--primary-dark);
    font-weight: 700;
}

.cta-section .btn:hover {
    background: var(--bg-gray);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* 页脚 */
.footer {
    background: var(--text);
    color: #a0aec0;
    padding: 64px 0 32px;
}

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

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

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-col h4 {
    color: white;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 20px;
}

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

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

.footer-col a {
    color: #a0aec0;
    font-size: 0.9rem;
}

.footer-col a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #2d3748;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer-bottom a {
    color: #a0aec0;
}

/* 弹窗 */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal {
    background: white;
    border-radius: var(--radius);
    max-width: 560px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.2);
    transform: scale(0.95) translateY(20px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 32px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-gray);
    color: var(--text);
}

.modal-body {
    padding: 32px;
}

.qrcode-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 8px;
}

.qrcode-item {
    text-align: center;
    padding: 20px;
    background: var(--bg-gray);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.qrcode-item .qrcode-box {
    width: 160px;
    height: 160px;
    margin: 0 auto 16px;
    background: white;
    padding: 8px;
    border-radius: 8px;
}

.qrcode-item .qrcode-box canvas,
.qrcode-item .qrcode-box img {
    width: 100%;
    height: 100%;
}

.qrcode-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.qrcode-item p {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* 下载页面 */
.download-hero {
    padding: 140px 0 60px;
    background: linear-gradient(180deg, var(--bg-gray) 0%, var(--bg) 100%);
    text-align: center;
}

.download-hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.download-hero p {
    color: var(--text-gray);
    font-size: 1.1rem;
    max-width: 560px;
    margin: 0 auto 40px;
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.platform-card {
    background: white;
    border-radius: var(--radius);
    padding: 40px 32px;
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
}

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

.platform-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.platform-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.platform-card .version {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 20px;
}

.platform-card .arch-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.platform-card .arch-list a {
    display: block;
    padding: 8px 16px;
    background: var(--bg-gray);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
}

.platform-card .arch-list a:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
}

/* 文档页面 */
.docs-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 48px;
    padding-top: 120px;
    padding-bottom: 80px;
}

.docs-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.docs-sidebar h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-light);
    margin-bottom: 16px;
    font-weight: 700;
}

.docs-sidebar ul {
    list-style: none;
}

.docs-sidebar li {
    margin-bottom: 4px;
}

.docs-sidebar a {
    display: block;
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--text-gray);
    font-size: 0.9rem;
    font-weight: 500;
}

.docs-sidebar a:hover,
.docs-sidebar a.active {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.docs-content h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 24px;
}

.docs-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 40px 0 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.docs-content p {
    color: var(--text-gray);
    margin-bottom: 16px;
}

.docs-content ol,
.docs-content ul {
    margin-bottom: 16px;
    padding-left: 24px;
    color: var(--text-gray);
}

.docs-content li {
    margin-bottom: 8px;
}

.docs-content code {
    background: var(--bg-gray);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--primary-dark);
}

.docs-content pre {
    background: var(--text);
    color: #e2e8f0;
    padding: 20px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin-bottom: 20px;
}

.docs-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

/* 关于页面 */
.about-hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, var(--bg-gray) 0%, var(--bg) 100%);
    text-align: center;
}

.about-hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.about-hero p {
    color: var(--text-gray);
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.value-card {
    text-align: center;
    padding: 40px 24px;
}

.value-card .value-icon {
    width: 64px;
    height: 64px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 20px;
}

.value-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.value-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 48px;
    bottom: -40px;
    width: 2px;
    background: var(--border);
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-dot {
    width: 40px;
    height: 40px;
    min-width: 40px;
    background: var(--primary-light);
    border: 2px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--primary);
    font-size: 0.8rem;
    position: relative;
    z-index: 1;
}

.timeline-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-content p {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* 面包屑 */
.breadcrumb {
    padding-top: 100px;
    padding-bottom: 20px;
    background: var(--bg-gray);
}

.breadcrumb-inner {
    font-size: 0.85rem;
    color: var(--text-light);
}

.breadcrumb-inner a {
    color: var(--text-gray);
}

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

.breadcrumb-inner span {
    margin: 0 8px;
    color: var(--border);
}

/* 响应式 */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero h1 {
        font-size: 2.4rem;
    }
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    .hero-btns {
        justify-content: center;
    }
    .hero-stats {
        justify-content: center;
    }
    .hero-visual {
        order: -1;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .docs-layout {
        grid-template-columns: 1fr;
    }
    .docs-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }
    .nav-links.active {
        display: flex;
    }
    .mobile-menu-btn {
        display: flex;
    }
    .scenario-grid,
    .testimonial-grid,
    .platform-grid,
    .values-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    .section {
        padding: 60px 0;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .hero {
        padding: 120px 0 60px;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .qrcode-grid {
        grid-template-columns: 1fr;
    }
}

/* 动画 */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 表格 */
.table-wrap {
    overflow-x: auto;
    margin-bottom: 24px;
}

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

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--bg-gray);
    font-weight: 600;
    color: var(--text);
}

tr:hover td {
    background: var(--bg-gray);
}

/* 标签 */
.tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* 提示框 */
.tip {
    background: #fffbeb;
    border-left: 4px solid #f59e0b;
    padding: 16px 20px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 20px;
    color: #92400e;
    font-size: 0.9rem;
}

.info-box {
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    padding: 16px 20px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 20px;
    color: var(--primary-dark);
    font-size: 0.9rem;
}