/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #10a37f;
    --primary-hover: #0d8c6d;
    --secondary-color: #6e59a5;
    --dark-bg: #0d0d0d;
    --light-bg: #ffffff;
    --text-primary: #2d2d2d;
    --text-secondary: #6e6e80;
    --border-color: #e5e5e5;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--light-bg);
    overflow-x: hidden;
}

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

/* ===== Language Switcher ===== */
.lang-switcher {
    position: fixed;
    top: 100px;
    right: 24px;
    z-index: 999;
    background: white;
    border-radius: 24px;
    padding: 8px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.lang-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 16px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.lang-btn:hover {
    background: rgba(16, 163, 127, 0.1);
    color: var(--primary-color);
}

.lang-btn.active {
    background: var(--primary-color);
    color: white;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    font-size: 32px;
}

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

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 15px;
}

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

.btn-github {
    padding: 8px 16px;
    background: var(--dark-bg);
    color: white !important;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.btn-github:hover {
    background: var(--text-primary);
    transform: translateY(-2px);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    padding: 180px 0 120px;
    overflow: hidden;
    background: linear-gradient(180deg, #ffffff 0%, #f9fafb 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(16, 163, 127, 0.1);
    border-radius: 24px;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.badge-new {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.badge-text {
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 500;
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 40px;
    font-size: 18px;
}

.hero-stats {
    display: flex;
    gap: 60px;
    justify-content: center;
    animation: fadeInUp 0.6s ease 0.4s both;
}

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

.stat-value {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--gradient-1);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--gradient-2);
    bottom: -250px;
    left: -150px;
    animation-delay: -5s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: var(--gradient-3);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

/* ===== Section Styles ===== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
}

/* ===== Features Section ===== */
.features {
    background: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    position: relative;
    padding: 32px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all 0.3s ease;
}

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

.feature-card.highlight {
    background: linear-gradient(135deg, rgba(16, 163, 127, 0.05) 0%, rgba(110, 89, 165, 0.05) 100%);
    border: 2px solid var(--primary-color);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 8px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 24px;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

.feature-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

/* ===== Scientific Integrity Section ===== */
.integrity {
    background: var(--dark-bg);
    color: white;
}

.integrity-content h2 {
    text-align: center;
    font-size: 48px;
    margin-bottom: 60px;
    color: white;
}

.integrity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.integrity-item {
    text-align: center;
    padding: 32px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.integrity-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.integrity-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.integrity-item h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: white;
}

.integrity-item p {
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Quick Start Section ===== */
.quickstart {
    background: #f9fafb;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.code-block {
    position: relative;
    background: var(--dark-bg);
    color: #00ff00;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.6;
    overflow-x: auto;
}

.copy-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ===== Examples Section ===== */
.examples {
    background: white;
}

.example-tabs {
    max-width: 900px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    border-bottom: 2px solid var(--border-color);
    overflow-x: auto;
}

.tab-btn {
    padding: 12px 24px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

.example-box {
    background: #f9fafb;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.example-query {
    background: var(--dark-bg);
    color: #00ff00;
    padding: 20px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.prompt {
    color: var(--primary-color);
    margin-right: 8px;
}

.example-result {
    padding: 24px;
}

.example-result h4 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.result-item {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.result-item p {
    margin: 8px 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.result-summary {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-weight: 500;
}

.taxonomy-tree {
    background: white;
    padding: 16px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    margin-top: 12px;
}

.taxonomy-tree p {
    margin: 4px 0;
    color: var(--text-primary);
}

/* ===== Data Sources Section ===== */
.data-sources {
    background: #f9fafb;
}

.data-sources h2 {
    text-align: center;
    font-size: 48px;
    margin-bottom: 60px;
}

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.source-card {
    background: white;
    padding: 32px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.source-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.source-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ===== Documentation Section ===== */
.documentation {
    background: white;
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.doc-card {
    display: block;
    padding: 32px;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.doc-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.doc-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.doc-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ===== CTA Section ===== */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 48px;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.cta .btn-primary {
    background: white;
    color: var(--primary-color);
}

.cta .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
}

.cta .btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.cta .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ===== Footer ===== */
.footer {
    background: var(--dark-bg);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 16px;
    margin-bottom: 16px;
    color: white;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.footer-version {
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    margin: 8px 0;
}

.footer-bottom a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

.beian-link {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

.beian-link:hover {
    color: var(--primary-color);
    text-decoration: none;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    33% {
        transform: translate(30px, -30px);
    }
    66% {
        transform: translate(-20px, 20px);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    /* 语言切换器移动端优化 */
    .lang-switcher {
        top: 80px;
        right: 16px;
        padding: 6px;
        gap: 6px;
    }
    
    .lang-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    /* 导航栏移动端 */
    .nav-menu {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        gap: 16px;
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
    }
    
    .nav-menu a {
        display: block;
        padding: 12px;
        font-size: 16px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    /* Hero区域 */
    .hero {
        padding: 140px 0 80px;
    }
    
    .hero-title {
        font-size: 36px;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 16px;
        padding: 0 10px;
    }
    
    .hero-badge {
        flex-direction: column;
        gap: 4px;
        padding: 10px 16px;
    }
    
    .badge-text {
        font-size: 13px;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
        padding: 0 20px;
    }
    
    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 32px;
    }
    
    .stat-value {
        font-size: 40px;
    }
    
    /* 章节标题 */
    .section-title {
        font-size: 32px;
        padding: 0 10px;
    }
    
    .section-subtitle {
        font-size: 16px;
        padding: 0 10px;
    }
    
    section {
        padding: 60px 0;
    }
    
    /* 功能卡片 */
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 24px;
    }
    
    .feature-icon {
        font-size: 40px;
    }
    
    .feature-card h3 {
        font-size: 20px;
    }
    
    /* 科学严谨性 */
    .integrity-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .integrity-item {
        padding: 24px;
    }
    
    /* 快速开始 */
    .step {
        flex-direction: column;
        gap: 16px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .step-content h3 {
        font-size: 20px;
    }
    
    .code-block {
        font-size: 12px;
        padding: 16px;
        overflow-x: auto;
    }
    
    .copy-btn {
        font-size: 11px;
        padding: 4px 8px;
    }
    
    /* 示例标签 */
    .tab-buttons {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    
    .tab-buttons::-webkit-scrollbar {
        display: none;
    }
    
    .tab-btn {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .example-query {
        font-size: 12px;
        padding: 16px;
        overflow-x: auto;
    }
    
    .example-result {
        padding: 16px;
    }
    
    .result-item {
        padding: 16px;
    }
    
    .result-item h4 {
        font-size: 16px;
    }
    
    .result-item p {
        font-size: 13px;
    }
    
    /* 数据源 */
    .sources-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .source-card {
        padding: 24px;
    }
    
    /* 文档 */
    .docs-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .doc-card {
        padding: 24px;
    }
    
    /* CTA */
    .cta-content h2 {
        font-size: 32px;
        padding: 0 10px;
    }
    
    .cta-content p {
        font-size: 16px;
        padding: 0 10px;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
        padding: 0 20px;
    }
    
    .cta-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* 页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-section {
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .footer-bottom {
        padding-top: 20px;
    }
    
    .footer-bottom p {
        font-size: 12px;
        line-height: 1.8;
    }
}

@media (max-width: 480px) {
    /* 容器内边距 */
    .container {
        padding: 0 16px;
    }
    
    /* Hero区域 */
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .stat-value {
        font-size: 36px;
    }
    
    .stat-label {
        font-size: 12px;
    }
    
    /* 章节 */
    section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        font-size: 14px;
    }
    
    /* 功能卡片 */
    .feature-card {
        padding: 20px;
    }
    
    .feature-icon {
        font-size: 36px;
    }
    
    .feature-card h3 {
        font-size: 18px;
    }
    
    .feature-card p {
        font-size: 14px;
    }
    
    /* 代码块 */
    .code-block {
        font-size: 11px;
        padding: 12px;
    }
    
    .code-block code {
        word-break: break-all;
    }
    
    /* 按钮 */
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .btn-large {
        padding: 14px 32px;
        font-size: 16px;
    }
    
    /* 示例 */
    .example-query {
        font-size: 11px;
        padding: 12px;
    }
    
    .example-result {
        padding: 12px;
    }
    
    .result-item {
        padding: 12px;
    }
    
    .result-item h4 {
        font-size: 15px;
    }
    
    .result-item p {
        font-size: 12px;
    }
    
    .taxonomy-tree {
        font-size: 11px;
        padding: 12px;
    }
    
    /* CTA */
    .cta-content h2 {
        font-size: 28px;
    }
    
    .cta-content p {
        font-size: 14px;
    }
    
    /* 页脚 */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        gap: 24px;
    }
    
    .footer-section h4 {
        font-size: 14px;
    }
    
    .footer-section a {
        font-size: 13px;
    }
}

/* 横屏手机优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 40px;
    }
    
    section {
        padding: 50px 0;
    }
}

/* 平板优化 */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 32px;
    }
    
    .hero-title {
        font-size: 52px;
    }
    
    .section-title {
        font-size: 40px;
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sources-grid,
    .docs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}