/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部横幅广告位 */
.top-banner-ad {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px; /* 减小高度 */
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.top-banner-ad .ad-container {
    max-width: 1200px;
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px; /* 添加左右内边距 */
}

.top-banner-ad .ad-image {
    max-width: 100%;
    max-height: 50px; /* 限制图片最大高度 */
    width: auto;
    height: auto;
    object-fit: contain;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.top-banner-ad .ad-image:hover {
    opacity: 0.9;
}

.top-banner-ad .ad-close {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
    z-index: 1002;
}

.top-banner-ad .ad-close:hover {
    background: rgba(0, 0, 0, 0.7);
}

.top-banner-ad .ad-label {
    position: absolute;
    top: 5px;
    left: 5px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 9px;
    font-weight: normal;
    z-index: 1002;
}

/* 调整导航栏位置，为广告位留出空间 */
.navbar {
    position: fixed;
    top: 60px; /* 调整为60px，与广告位高度一致 */
    width: 100%;
    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-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-logo i {
    margin-right: 8px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* 页面头部样式 */
.page-header {
    padding: 150px 0 60px; /* 增加顶部间距，为广告位(60px)和导航栏(70px)留出空间 */
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* 英雄区域 */
.hero {
    padding: 150px 0 80px; /* 增加顶部间距，为广告位(60px)和导航栏(70px)留出空间 */
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* 浮动卡片 */
.floating-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 1.5rem;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ef4444;
}

.status-dot.active {
    background: #10b981;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.metric {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.metric-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.metric-value {
    font-weight: 600;
}

.metric-value.success {
    color: #10b981;
}

/* 功能区域 */
.features {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

/* 优势区域 */
.advantages {
    padding: 80px 0;
    background: white;
}

.advantages-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.advantages-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.advantages-list {
    list-style: none;
}

.advantages-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.advantages-list i {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.code-preview {
    background: var(--bg-dark);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.code-header {
    background: #374151;
    padding: 1rem;
    color: white;
    font-weight: 500;
}

.code-preview pre {
    padding: 1.5rem;
    margin: 0;
    color: #e5e7eb;
    font-family: 'Fira Code', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.code-preview code {
    color: #10b981;
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-section p {
    color: #9ca3af;
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .top-banner-ad {
        height: 50px; /* 移动端更小的高度 */
    }
    
    .navbar {
        top: 50px;
    }
    
    .page-header,
    .hero,
    .download-hero {
        padding-top: 140px; /* 调整移动端间距：广告位(50px) + 导航栏(70px) + 额外空间(20px) */
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 50px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-md);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-stats {
        justify-content: center;
    }

    .advantages-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .btn {
        padding: 10px 20px;
        font-size: 0.875rem;
    }

    .feature-card {
        padding: 1.5rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.advantages-text,
.advantages-visual {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

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

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

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

/* 下载页面专用样式 */

/* 英雄区域 */
.download-hero {
    padding: 150px 0 80px; /* 增加顶部间距，为广告位(60px)和导航栏(70px)留出空间 */
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.download-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.version-badge {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 1rem 1.5rem;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.version-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fbbf24;
}

.version-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2.5rem;
    color: #fbbf24;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 平台选择区域 */
.platforms-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.platform-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.platform-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.platform-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.platform-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.platform-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.platform-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.download-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.download-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.download-option:hover {
    background: #f3f4f6;
}

.option-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.option-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.file-name {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

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

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

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

.download-btn.secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.install-guide {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.install-guide h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.install-guide ol {
    padding-left: 1.5rem;
}

.install-guide li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.install-guide code {
    background: var(--bg-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    color: var(--primary-color);
}

.code-block {
    background: var(--bg-dark);
    border-radius: 8px;
    overflow: hidden;
    margin-top: 1rem;
}

.code-block pre {
    padding: 1rem;
    margin: 0;
    overflow-x: auto;
}

.code-block code {
    color: #e5e7eb;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.5;
}

/* 包管理器区域 */
.package-managers-section {
    padding: 80px 0;
    background: white;
}

.package-managers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.package-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.package-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.package-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.package-header i {
    font-size: 2rem;
    color: var(--primary-color);
}

.package-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.package-content pre {
    background: var(--bg-dark);
    color: #e5e7eb;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.5;
}

/* 系统要求区域 */
.requirements-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.requirement-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.requirement-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.requirement-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.requirement-header i {
    font-size: 2rem;
    color: var(--primary-color);
}

.requirement-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.requirement-card ul {
    list-style: none;
    padding: 0;
}

.requirement-card li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    line-height: 1.6;
}

.requirement-card li:last-child {
    border-bottom: none;
}

.requirement-card strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* FAQ 区域 */
.faq-section {
    padding: 80px 0;
    background: white;
}

.faq-list {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    background: white;
    border-radius: 12px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-secondary);
}

.faq-question h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.faq-question i {
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.faq-answer {
    display: none;
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq-answer p {
    margin-bottom: 1rem;
}

.faq-answer ul {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.faq-answer li {
    margin-bottom: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .download-hero {
        padding: 100px 0 60px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .stat-item {
        padding: 1.5rem;
    }
    
    .platforms-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .platform-card {
        padding: 1.5rem;
    }
    
    .download-option {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .package-managers-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .requirements-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .version-badge {
        flex-direction: column;
        gap: 0.5rem;
        padding: 1rem;
    }
    
    .platform-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .platform-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .download-btn {
        width: 100%;
        justify-content: center;
    }
    
    .package-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .requirement-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .faq-question {
        padding: 1rem;
    }
    
    .faq-question h3 {
        font-size: 1rem;
    }
    
    .faq-answer {
        padding: 0 1rem 1rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.platform-card,
.package-card,
.requirement-card,
.faq-item {
    animation: fadeInUp 0.6s ease forwards;
}

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

/* 文档页面专用样式 */

/* 文档英雄区域 */
.docs-hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.docs-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="docs-grid" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23docs-grid)"/></svg>');
    opacity: 0.3;
}

/* 文档分类区域 */
.docs-categories {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.category-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    margin-bottom: 1.5rem;
}

.category-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.category-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.category-card ul {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.category-card li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.category-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.category-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.category-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

/* 快速开始区域 */
.quick-start-section {
    padding: 80px 0;
    background: white;
}

.quick-start-content {
    max-width: 800px;
    margin: 3rem auto 0;
}

.step-timeline {
    position: relative;
}

.step-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.step-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 3rem;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    margin-right: 2rem;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.step-content {
    flex: 1;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.step-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* API 参考区域 */
.api-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.api-content {
    max-width: 1000px;
    margin: 3rem auto 0;
}

.api-overview {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.api-overview h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

.info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.info-item .label {
    font-weight: 600;
    color: var(--text-primary);
}

.info-item code {
    background: var(--bg-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    color: var(--primary-color);
}

.api-endpoints {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.api-endpoints h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.endpoint-list {
    display: grid;
    gap: 1rem;
}

.endpoint-item {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.endpoint-item:hover {
    background: #f3f4f6;
}

.endpoint-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.method {
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.method.get {
    background: #dcfce7;
    color: #166534;
}

.method.post {
    background: #dbeafe;
    color: #1e40af;
}

.method.put {
    background: #fef3c7;
    color: #92400e;
}

.method.delete {
    background: #fee2e2;
    color: #991b1b;
}

.path {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-weight: 600;
    color: var(--text-primary);
}

.endpoint-item p {
    color: var(--text-secondary);
    margin: 0;
}

.api-examples {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.api-examples h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.example-tabs {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

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

.tab-btn:hover {
    background: rgba(99, 102, 241, 0.1);
}

.tab-content {
    background: white;
}

.tab-pane {
    display: none;
    padding: 1.5rem;
}

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

.tab-pane pre {
    background: var(--bg-dark);
    color: #e5e7eb;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.85rem;
    line-height: 1.5;
}

/* 功能特性页面专用样式 */

/* 功能特性英雄区域 */
.features-hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.features-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="features-grid" width="15" height="15" patternUnits="userSpaceOnUse"><path d="M 15 0 L 0 0 0 15" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23features-grid)"/></svg>');
    opacity: 0.3;
}

/* 功能特性网格 */
.features-grid-extended {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card-extended {
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.feature-card-extended::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.feature-card-extended:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon-extended {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: white;
}

.feature-card-extended h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card-extended p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

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

.feature-list li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

/* 功能对比区域 */
.features-comparison {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.comparison-table {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.comparison-header {
    background: var(--gradient-primary);
    color: white;
    padding: 2rem;
    text-align: center;
}

.comparison-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.comparison-content {
    padding: 2rem;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.comparison-row:last-child {
    border-bottom: none;
}

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

.comparison-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.comparison-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .docs-hero,
    .features-hero {
        padding: 140px 0 60px;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .category-card {
        padding: 1.5rem;
    }
    
    .step-timeline::before {
        left: 25px;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        margin-right: 1.5rem;
    }
    
    .step-content {
        padding: 1.5rem;
    }
    
    .api-info {
        grid-template-columns: 1fr;
    }
    
    .endpoint-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .tab-buttons {
        flex-direction: column;
    }
    
    .tab-btn {
        border-bottom: 1px solid var(--border-color);
    }
    
    .features-grid-extended {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card-extended {
        padding: 2rem;
    }
    
    .comparison-row {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .category-icon,
    .feature-icon-extended {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        margin-right: 1rem;
    }
    
    .step-content {
        padding: 1rem;
    }
    
    .api-overview,
    .api-endpoints,
    .api-examples {
        padding: 1.5rem;
    }
    
    .tab-pane {
        padding: 1rem;
    }
    
    .feature-card-extended {
        padding: 1.5rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.category-card,
.step-item,
.endpoint-item,
.feature-card-extended {
    animation: fadeInUp 0.6s ease forwards;
}

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

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