/* 全局样式 */*{box-sizing:border-box;}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:#fff;color:#333;margin:0;padding:0;line-height:1.8;}h1,h2,h3,h4,h5,h6{margin:1.5rem 0 1rem;line-height:1.4;font-weight:600;}h1{font-size:2rem;border-bottom:2px solid #e0e0e0;padding-bottom:0.5rem;}h2{font-size:1.5rem;color:#444;}h3{font-size:1.2rem;color:#555;}a{color:#0066cc;text-decoration:none;transition:color 0.2s;}a:hover{color:#004999;text-decoration:underline;}p{margin:0.8rem 0;}ul,ol{list-style:none;padding:0;margin:0;}/* 顶部导航 */nav{display:flex;flex-wrap:nowrap;justify-content:space-between;align-items:center;background:#000;padding:1rem;position:sticky;top:0;z-index:100;box-shadow:0 2px 4px rgba(0,0,0,0.1);}nav a{color:#fff;text-decoration:none;flex:1 1 0;min-width:0;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0.5rem;font-weight:500;border-radius:4px;transition:background 0.2s;}nav a:hover{background:rgba(255,255,255,0.1);text-decoration:none;}/* 面包屑 */.breadcrumb{padding:1rem 2rem;font-size:0.9rem;color:#666;background:#f8f8f8;border-bottom:1px solid #e0e0e0;}.breadcrumb a{color:#0066cc;text-decoration:none;}.breadcrumb a:hover{text-decoration:underline;}/* 主内容区 */main{max-width:1200px;margin:0 auto;padding:2rem;}/* 介绍区块 */.intro{background:#f9f9f9;padding:1.5rem;margin:2rem 0;border-left:4px solid #0066cc;border-radius:4px;}.intro p{margin:0.5rem 0;}/* 区块样式 */section{margin:3rem 0;}section h2{margin-bottom:1.5rem;padding-bottom:0.5rem;border-bottom:2px solid #f0f0f0;}.note{background:#fffbf0;border:1px solid #ffeaa7;padding:1rem;margin:1rem 0;border-radius:4px;}/* 网格布局(首页) */.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;margin:2rem 0;}.video-grid li{background:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:1.5rem;transition:box-shadow 0.3s,transform 0.2s;}.video-grid li:hover{box-shadow:0 4px 12px rgba(0,0,0,0.1);transform:translateY(-2px);}.video-grid h3{margin:0 0 0.5rem 0;font-size:1.1rem;}.video-grid p{margin:0.5rem 0;font-size:0.9rem;color:#666;}.video-grid .summary{font-size:0.85rem;color:#888;line-height:1.6;}/* 列表布局(列表页) */.video-list{margin:2rem 0;}.video-list li{background:#fff;border:1px solid #e0e0e0;border-radius:8px;padding:1.5rem;margin-bottom:1.5rem;position:relative;transition:box-shadow 0.3s;}.video-list li:hover{box-shadow:0 2px 8px rgba(0,0,0,0.08);}.video-list .num{position:absolute;top:1rem;right:1rem;background:#0066cc;color:#fff;font-size:0.8rem;padding:0.25rem 0.6rem;border-radius:12px;font-weight:600;}.video-list h3{margin:0 0 0.5rem 0;font-size:1.2rem;padding-right:3rem;}.video-list p{margin:0.5rem 0;font-size:0.95rem;color:#555;}.video-list .meta{font-size:0.85rem;color:#888;margin-top:0.8rem;}/* 详情页样式 */.meta{background:#f8f8f8;padding:1rem 1.5rem;border-radius:8px;margin:1.5rem 0;}.meta p{margin:0.5rem 0;font-size:0.95rem;}.oneline{background:#e6f7ff;border-left:4px solid #1890ff;padding:1rem 1.5rem;margin:2rem 0;border-radius:4px;}.oneline h2{margin:0 0 0.5rem 0;font-size:1.2rem;color:#1890ff;}.oneline p{margin:0;font-size:1rem;color:#333;font-weight:500;}.summary,.review{margin:2rem 0;padding:1.5rem;background:#fafafa;border-radius:8px;}.summary h2,.review h2{margin:0 0 1rem 0;font-size:1.3rem;}.summary p,.review p{line-height:1.8;color:#444;}.related{margin:3rem 0;padding:1.5rem;background:#f5f5f5;border-radius:8px;}.related h2{margin:0 0 1rem 0;}.related ul{list-style:none;padding:0;}.related li{margin:0.8rem 0;padding:0.8rem;background:#fff;border-left:3px solid #0066cc;border-radius:4px;}/* UI Style 3 (抖音风格) */.ui-style-3 nav{background:linear-gradient(135deg,#000 0%,#1a1a1a 100%);}.ui-style-3 h1{color:#fe2c55;border-bottom-color:#fe2c55;}.ui-style-3 .video-grid li:hover,.ui-style-3 .video-list li:hover{box-shadow:0 4px 16px rgba(254,44,85,0.2);}.ui-style-3 a{color:#fe2c55;}.ui-style-3 a:hover{color:#d91f47;}/* 响应式设计 */@media (max-width:768px){/* 移动端导航 */ nav{padding:0.75rem 0.5rem;}nav a{font-size:0.85rem;padding:0.4rem 0.2rem;}/* 主内容 */ main{padding:1rem;}h1{font-size:1.5rem;}h2{font-size:1.3rem;}.breadcrumb{padding:0.75rem 1rem;font-size:0.85rem;}/* 网格布局调整 */ .video-grid{grid-template-columns:1fr;gap:1rem;}.video-grid li{padding:1rem;}/* 列表布局调整 */ .video-list li{padding:1rem;}.video-list h3{font-size:1.1rem;}.video-list .num{font-size:0.7rem;padding:0.2rem 0.5rem;}/* 详情页调整 */ .meta,.oneline,.summary,.review,.related{padding:1rem;}}@media (max-width:480px){nav a{font-size:0.75rem;padding:0.3rem 0.1rem;}h1{font-size:1.3rem;}main{padding:0.75rem;}}/* 打印样式 */@media print{nav{display:none;}.breadcrumb{border:none;}main{max-width:100%;}}