/* 全局样式 */*{box-sizing:border-box;}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;line-height:1.6;color:#333;background:#f5f5f5;}a{color:#0066cc;text-decoration:none;transition:color 0.2s ease;}a:hover{color:#004999;text-decoration:underline;}img{max-width:100%;height:auto;}/* 导航栏 */.site-nav{display:flex;flex-wrap:nowrap;justify-content:space-between;align-items:center;background:#fff;padding:1rem 2rem;box-shadow:0 2px 4px rgba(0,0,0,0.1);position:sticky;top:0;z-index:1000;}.site-nav a{flex:1 1 0;min-width:0;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0.5rem 0.5rem;font-size:16px;font-weight:500;color:#333;transition:all 0.3s ease;}.site-nav a:hover,.site-nav a[aria-current="page"]{color:#0066cc;background:rgba(0,102,204,0.05);border-radius:4px;}@media (max-width:768px){.site-nav{padding:0.75rem 0.5rem;}.site-nav a{font-size:13px;padding:0.5rem 0.25rem;}}/* 面包屑 */.breadcrumb{padding:0.75rem 2rem;background:#fff;font-size:14px;color:#666;border-bottom:1px solid #e5e5e5;}.breadcrumb a{color:#0066cc;margin-right:0.25rem;}.breadcrumb span{color:#333;font-weight:500;}@media (max-width:768px){.breadcrumb{padding:0.5rem 1rem;font-size:12px;}}/* 容器 */.container{max-width:1200px;margin:0 auto;padding:2rem;}@media (max-width:768px){.container{padding:1rem;}}/* 首页头部 */.hero{text-align:center;padding:3rem 1rem;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:white;border-radius:12px;margin-bottom:3rem;}.hero h1{font-size:2rem;margin:0 0 1rem 0;font-weight:700;}.hero .intro{font-size:1.1rem;line-height:1.8;max-width:800px;margin:0 auto;opacity:0.95;}@media (max-width:768px){.hero{padding:2rem 1rem;}.hero h1{font-size:1.5rem;}.hero .intro{font-size:0.95rem;}}/* 区块标题 */section{margin-bottom:3rem;}section h2{font-size:1.75rem;margin:0 0 1.5rem 0;padding-bottom:0.5rem;border-bottom:3px solid #0066cc;color:#222;}.more-link{text-align:right;margin-top:1rem;}.more-link a{font-weight:500;}/* 卡片网格 */.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;}@media (max-width:768px){.video-grid{grid-template-columns:1fr;gap:1rem;}}.video-card{background:white;padding:1.5rem;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.08);transition:transform 0.3s ease,box-shadow 0.3s ease;}.video-card:hover{transform:translateY(-4px);box-shadow:0 4px 16px rgba(0,0,0,0.12);}.video-card h3{font-size:1.25rem;margin:0 0 0.5rem 0;color:#222;}.video-card h3 a{color:#222;}.video-card h3 a:hover{color:#0066cc;}.video-card .meta{font-size:0.875rem;color:#666;margin:0.5rem 0;}.video-card .oneline{font-size:0.95rem;color:#555;margin:0.75rem 0;line-height:1.6;}.video-card .summary-excerpt{font-size:0.875rem;color:#777;line-height:1.6;margin-top:0.75rem;}/* 列表样式 */.video-list{background:white;border-radius:8px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,0.08);}.video-item{padding:1.25rem 1.5rem;border-bottom:1px solid #f0f0f0;transition:background 0.2s ease;}.video-item:last-child{border-bottom:none;}.video-item:hover{background:#f9f9f9;}.video-item .rank{display:inline-block;width:32px;height:32px;line-height:32px;text-align:center;background:#0066cc;color:white;border-radius:50%;font-weight:bold;margin-right:1rem;font-size:0.875rem;}.video-item h3{display:inline;font-size:1.125rem;margin:0;color:#222;}.video-item h3 a{color:#222;}.video-item h3 a:hover{color:#0066cc;}.video-item .oneline{margin:0.5rem 0 0 0;color:#666;font-size:0.95rem;}/* 列表页样式 */.page-header{text-align:center;margin-bottom:3rem;padding:2rem 1rem;background:white;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.08);}.page-header h1{font-size:2rem;margin:0 0 1rem 0;color:#222;}.page-intro{font-size:1.05rem;color:#666;line-height:1.8;max-width:800px;margin:0 auto;}.page-intro a{font-weight:500;}.video-list-page{display:flex;flex-direction:column;gap:1.5rem;}.video-card-large{background:white;padding:2rem;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.08);position:relative;transition:transform 0.3s ease,box-shadow 0.3s ease;}.video-card-large:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,0.12);}.rank-badge{position:absolute;top:1rem;right:1rem;background:#ff6b6b;color:white;padding:0.25rem 0.75rem;border-radius:20px;font-size:0.875rem;font-weight:bold;}.video-card-large h2{font-size:1.5rem;margin:0 0 0.75rem 0;color:#222;border:none;padding:0;}.video-card-large h2 a{color:#222;}.video-card-large h2 a:hover{color:#0066cc;}.video-card-large .tags{display:flex;flex-wrap:wrap;gap:0.5rem;margin:0.75rem 0;font-size:0.875rem;color:#666;}.video-card-large .summary-short{margin-top:1rem;color:#555;line-height:1.7;}/* 详情页样式 */.detail-page{background:white;padding:3rem;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,0.08);}.detail-page header{text-align:center;margin-bottom:3rem;padding-bottom:2rem;border-bottom:2px solid #e5e5e5;}.detail-page header h1{font-size:2.25rem;margin:0 0 0.5rem 0;color:#222;}.detail-page .subtitle{font-size:1rem;color:#888;margin:0;}.detail-page section{margin-bottom:2.5rem;}.detail-page section h2{font-size:1.5rem;margin:0 0 1rem 0;color:#333;border-bottom:2px solid #0066cc;padding-bottom:0.5rem;}.basic-info ul{list-style:none;padding:0;margin:0;}.basic-info li{padding:0.75rem 0;border-bottom:1px solid #f0f0f0;font-size:1rem;}.basic-info li:last-child{border-bottom:none;}.basic-info strong{color:#555;min-width:80px;display:inline-block;}.highlight{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:white;padding:2rem;border-radius:8px;text-align:center;}.highlight h2{color:white;border-color:rgba(255,255,255,0.3);}.oneline-big{font-size:1.25rem;line-height:1.8;margin:0;font-weight:500;}.summary p,.review p{font-size:1.05rem;line-height:1.9;color:#444;text-align:justify;}.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.5rem;}@media (max-width:768px){.related-grid{grid-template-columns:1fr;}}.related-card{background:#f9f9f9;padding:1.25rem;border-radius:8px;border:1px solid #e5e5e5;transition:all 0.3s ease;}.related-card:hover{background:white;box-shadow:0 2px 8px rgba(0,0,0,0.08);border-color:#0066cc;}.related-card h3{font-size:1.125rem;margin:0 0 0.5rem 0;}.related-card h3 a{color:#222;}.related-card h3 a:hover{color:#0066cc;}@media (max-width:768px){.detail-page{padding:1.5rem;}.detail-page header h1{font-size:1.75rem;}}/* 错误页面 */.error-page{text-align:center;padding:4rem 2rem;background:white;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,0.08);}.error-page h1{font-size:3rem;color:#ff6b6b;margin:0 0 1rem 0;}.notice{background:#fff3cd;border:1px solid #ffc107;padding:1rem;border-radius:4px;color:#856404;margin:1rem 0;}/* 页脚 */.site-footer{background:#2c3e50;color:#ecf0f1;text-align:center;padding:2rem;margin-top:4rem;}.site-footer p{margin:0;font-size:0.95rem;}/* UI 样式变体 */.ui-style-0 body{background:#f5f5f5;}.ui-style-1 body{background:#f8f9fa;}.ui-style-2 body{background:#fafafa;}.ui-style-3 body{background:#f4f4f4;}.ui-style-4 body{background:#f7f7f7;}.ui-style-5 .hero{background:linear-gradient(135deg,#1e3c72 0%,#2a5298 100%);}.ui-style-6 .hero{background:linear-gradient(135deg,#0f2027 0%,#203a43 50%,#2c5364 100%);}.ui-style-7 .hero{background:linear-gradient(135deg,#141e30 0%,#243b55 100%);}.ui-style-8 .hero{background:linear-gradient(135deg,#0f2027 0%,#203a43 100%);}.ui-style-9 .hero{background:linear-gradient(135deg,#000000 0%,#434343 100%);}.ui-style-10 .site-nav{border-bottom:3px solid #00C75A;}.ui-style-11 .site-nav{border-bottom:3px solid #0099FF;}.ui-style-12 .site-nav{border-bottom:3px solid #FF6700;}.ui-style-13 .site-nav{border-bottom:3px solid #00A1D6;}.ui-style-14 body{background:#fdfefe;}/* 骨架变体 */body[class*="skeleton-"] .container{animation:fadeIn 0.5s ease-in;}@keyframes fadeIn{from{opacity:0;transform:translateY(10px);}to{opacity:1;transform:translateY(0);}}/* 返回顶部按钮 */.back-to-top{position:fixed;bottom:2rem;right:2rem;width:48px;height:48px;background:#0066cc;color:white;border:none;border-radius:50%;font-size:1.5rem;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,0.2);display:none;align-items:center;justify-content:center;transition:all 0.3s ease;z-index:999;}.back-to-top:hover{background:#004999;transform:translateY(-4px);}.back-to-top.visible{display:flex;}