/* OpenClaw 技术报告 - 专业样式表 */

/* CSS 变量定义 */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --accent-color: #0ea5e9;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    --sidebar-width: 280px;
    --header-height: 80px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* 暗色主题变量 */
[data-theme="dark"] {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器布局 */
.container {
    display: flex;
    min-height: 100vh;
}

/* 侧边导航栏 */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
}

.sidebar-header .logo {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    letter-spacing: -0.5px;
}

.sidebar-header .subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
    font-weight: 400;
}

.nav-content {
    padding: 1.5rem 1rem;
}

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

.nav-list li {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    font-size: 0.9rem;
    font-weight: 500;
}

.nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
    transform: translateX(4px);
}

.nav-link.active {
    background: var(--primary-color);
    color: white;
}

.sidebar-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-footer .version,
.sidebar-footer .date {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0.25rem 0;
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem 3rem;
    max-width: 1400px;
}

/* 内容头部 */
.content-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
    flex-wrap: wrap;
    gap: 1.5rem;
}

.header-info {
    flex: 1;
    min-width: 300px;
}

.report-type {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
}

.content-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -1px;
}

.report-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    background: var(--bg-primary);
    color: var(--text-primary);
}

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

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

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

.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn .icon {
    font-size: 1.1rem;
}

/* 目录区域 */
.toc-section {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    margin-bottom: 3rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.toc-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.toc-list {
    list-style: none;
    counter-reset: toc-counter;
}

.toc-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    counter-increment: toc-counter;
}

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

.toc-list li::before {
    content: counter(toc-counter) ". ";
    color: var(--primary-color);
    font-weight: 600;
    margin-right: 0.5rem;
}

.toc-list a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-weight: 500;
}

.toc-list a:hover {
    color: var(--primary-color);
}

/* 内容区域 */
.content-section {
    margin-bottom: 4rem;
    scroll-margin-top: 2rem;
}

.content-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--primary-color);
    letter-spacing: -0.5px;
}

.content-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 2rem 0 1.25rem;
}

.content-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 1.5rem 0 1rem;
}

/* 信息卡片 */
.info-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.info-card:hover {
    box-shadow: var(--shadow-md);
}

.info-card.highlight {
    border-left: 4px solid var(--primary-color);
    background: linear-gradient(135deg, var(--bg-primary), rgba(37, 99, 235, 0.05));
}

.info-card p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

/* 信息列表 */
.info-list {
    list-style: none;
    margin: 1rem 0;
}

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

.info-list li::before {
    content: "•";
    color: var(--primary-color);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 1.2rem;
    line-height: 1.5rem;
}

.info-list li ul {
    margin-top: 0.5rem;
    margin-left: 1rem;
}

/* 特性网格 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.feature-item {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.feature-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-item .feature-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.75rem;
}

.feature-item strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.feature-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* 安全特性项 */
.security-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.security-item .feature-icon {
    font-size: 1.5rem;
    margin-bottom: 0;
    flex-shrink: 0;
}

.security-item div {
    flex: 1;
}

.security-item p {
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

/* 引用框 */
.quote-box {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 1.5rem 2rem;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    font-style: italic;
}

.quote-box p {
    color: white;
    margin: 0;
    font-size: 1.05rem;
}

/* 数据表格 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.data-table thead {
    background: var(--bg-tertiary);
}

.data-table th {
    padding: 1rem 1.25rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-color);
}

.data-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.data-table tbody tr:hover {
    background: var(--bg-secondary);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--primary-color);
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* 表格响应式 */
.table-responsive {
    overflow-x: auto;
    margin: 1.5rem 0;
}

.comparison-table {
    min-width: 800px;
}

/* 架构图 */
.architecture-diagram {
    background: var(--bg-tertiary);
    padding: 2rem;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    overflow-x: auto;
}

.architecture-diagram pre {
    margin: 0;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--text-primary);
    white-space: pre;
}

.architecture-diagram code {
    color: var(--text-primary);
}

/* 流程图 */
.flow-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.flow-step {
    background: var(--bg-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    border: 2px solid var(--primary-color);
    color: var(--text-primary);
    font-weight: 500;
    width: 100%;
    max-width: 500px;
    text-align: center;
}

.flow-arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* 部署选项 */
.deployment-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.deployment-item {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.deployment-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.deployment-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.75rem;
}

.deployment-item span {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: block;
}

.deployment-item small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* 渠道网格 */
.channel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.channel-item {
    background: var(--bg-secondary);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.channel-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--bg-primary);
}

/* 模型标签 */
.model-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1rem 0;
}

.model-tag {
    background: var(--bg-secondary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.model-tag:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--bg-primary);
}

/* 技能类型 */
.skill-types {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1rem 0;
}

.skill-item {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

/* 配置文件 */
.config-files {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.config-file {
    background: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.config-file h4 {
    font-family: 'JetBrains Mono', monospace;
    color: var(--primary-color);
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
}

.config-file p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* 设备网格 */
.device-grid {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.device-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    min-width: 100px;
}

.device-icon {
    font-size: 2rem;
}

.device-item span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 场景项 */
.scenario-item {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    border: 1px solid var(--border-color);
}

.scenario-item h4 {
    margin-top: 0;
    color: var(--primary-color);
}

.scenario-flow {
    margin-top: 1rem;
}

.scenario-step,
.scenario-actions {
    background: var(--bg-primary);
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
}

.scenario-step strong,
.scenario-actions strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.scenario-step p {
    margin: 0;
    font-style: italic;
    color: var(--text-secondary);
}

.scenario-actions ol {
    margin: 0;
    padding-left: 1.25rem;
}

.scenario-actions li {
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

/* 代码块 */
.code-block {
    background: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
    overflow-x: auto;
    border: 1px solid var(--border-color);
}

.code-block pre {
    margin: 0;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-primary);
}

.code-block code {
    color: var(--text-primary);
}

/* 对比网格 */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 1.5rem 0;
}

.comparison-side {
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.comparison-side.highlight {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--bg-secondary), rgba(37, 99, 235, 0.05));
}

.comparison-side h4 {
    margin-top: 0;
    color: var(--primary-color);
}

/* 高亮框 */
.highlight-box {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    margin: 1.5rem 0;
}

.highlight-box h4 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

/* 优势列表 */
.advantage-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.advantage-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius);
}

.advantage-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.advantage-item span {
    color: white;
    font-size: 0.95rem;
}

/* 时间线 */
.timeline {
    position: relative;
    padding-left: 2rem;
    margin: 1.5rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0;
    width: 2rem;
    height: 2rem;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    z-index: 1;
}

.timeline-content {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.timeline-content h4 {
    margin-top: 0;
    color: var(--primary-color);
}

/* 场景扩展 */
.scenario-expansion {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.expansion-item {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.expansion-item h4 {
    margin-top: 0;
    color: var(--primary-color);
}

/* 预测网格 */
.prediction-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.prediction-item {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

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

.prediction-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.prediction-period {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.prediction-time {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.prediction-item.short-term .prediction-time {
    color: var(--success-color);
}

.prediction-item.mid-term .prediction-time {
    color: var(--warning-color);
}

.prediction-item.long-term .prediction-time {
    color: var(--primary-color);
}

/* 结论卡片 */
.conclusion {
    background: linear-gradient(135deg, var(--bg-primary), rgba(37, 99, 235, 0.05));
    border-left: 4px solid var(--primary-color);
}

.core-values {
    margin: 1.5rem 0;
}

.core-values h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

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

.value-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-secondary);
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius);
}

.value-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.value-item span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.conclusion-text {
    font-size: 1.1rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* 页脚 */
.content-footer {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 2px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.footer-section p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0.25rem 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
        padding: 1.5rem;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .content-header {
        flex-direction: column;
    }
    
    .content-header h1 {
        font-size: 1.75rem;
    }
    
    .feature-grid,
    .deployment-options,
    .prediction-grid,
    .value-grid {
        grid-template-columns: 1fr;
    }
    
    .device-grid {
        justify-content: center;
    }
    
    .advantage-item {
        flex-direction: column;
        text-align: center;
    }
    
    .table-responsive {
        border-radius: var(--border-radius);
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 1rem;
    }
    
    .info-card {
        padding: 1.25rem;
    }
    
    .content-section h2 {
        font-size: 1.5rem;
    }
    
    .header-actions {
        width: 100%;
    }
    
    .btn {
        flex: 1;
        justify-content: center;
    }
}

/* 打印样式 */
@media print {
    .sidebar,
    .back-to-top,
    .header-actions {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
        padding: 0;
    }
    
    .info-card,
    .content-section {
        break-inside: avoid;
    }
}

/* 动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.content-section {
    animation: fadeIn 0.6s ease-out;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 选中文本 */
::selection {
    background: var(--primary-color);
    color: white;
}