:root{--primary-color:#e02041;--primary-hover:#c01835;--text-dark:#333333;--text-gray:#666666;--text-light:#999999;--bg-white:#ffffff;--bg-gray:#f5f5f5;--bg-light:#fafafa;--border-color:#e0e0e0;--shadow-sm:0 2px 8px rgba(0,0,0,0.08);--shadow-md:0 4px 16px rgba(0,0,0,0.12);--radius:12px;--radius-sm:8px;--transition:all 0.3s ease;}*{margin:0;padding:0;box-sizing:border-box;}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft 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auto;}.site-logo{font-size:24px;font-weight:700;color:var(--primary-color);white-space:nowrap;margin-right:20px;flex-shrink:0;}.site-nav{flex:1;display:flex;justify-content:flex-end;}.nav-list{display:flex;flex-wrap:nowrap;align-items:center;gap:8px;}.nav-list li{flex-shrink:0;}.nav-list a{display:block;padding:8px 16px;color:var(--text-dark);font-size:15px;border-radius:var(--radius-sm);white-space:nowrap;transition:var(--transition);}.nav-list a:hover,.nav-list a.active{background:var(--primary-color);color:var(--bg-white);}@media (max-width:767px){.header-inner{padding:12px 15px;}.site-logo{font-size:18px;margin-right:10px;}.nav-list{gap:4px;flex:1;justify-content:space-between;}.nav-list li{flex:1 1 0;min-width:0;}.nav-list a{padding:6px 8px;font-size:13px;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}}.breadcrumb{padding:16px 0;font-size:14px;color:var(--text-gray);}.breadcrumb a{color:var(--text-gray);}.breadcrumb a:hover{color:var(--primary-color);}.breadcrumb span{margin:0 8px;}.main-content{padding:30px 0;min-height:60vh;}.page-header{text-align:center;margin-bottom:40px;padding:30px 20px;background:var(--bg-white);border-radius:var(--radius);box-shadow:var(--shadow-sm);}.page-header h1{color:var(--text-dark);margin-bottom:15px;}.page-desc{font-size:16px;color:var(--text-gray);line-height:1.8;max-width:800px;margin:0 auto;}.content-section{margin-bottom:50px;background:var(--bg-white);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow-sm);}.section-title{font-size:24px;color:var(--text-dark);margin-bottom:20px;padding-bottom:12px;border-bottom:3px solid var(--primary-color);display:inline-block;}.section-desc{color:var(--text-gray);margin-bottom:25px;line-height:1.8;}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;}@media (max-width:767px){.video-grid{grid-template-columns:repeat(2,1fr);gap:15px;}}@media (max-width:480px){.video-grid{grid-template-columns:1fr;}}.video-card{background:var(--bg-white);border:1px solid var(--border-color);border-radius:var(--radius);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column;height:100%;}.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--primary-color);}.video-card-header{padding:16px;background:var(--bg-gray);}.video-card-title{font-size:18px;font-weight:600;color:var(--text-dark);margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;line-height:1.4;}.video-card-meta{display:flex;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--text-light);}.video-card-meta span{display:inline-flex;align-items:center;}.video-card-body{padding:16px;flex:1;display:flex;flex-direction:column;}.video-card-oneline{font-size:14px;color:var(--text-gray);line-height:1.6;margin-bottom:12px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;}.video-card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;}.tag{display:inline-block;padding:4px 10px;background:var(--bg-gray);color:var(--text-gray);font-size:12px;border-radius:20px;white-space:nowrap;}.tag:hover{background:var(--primary-color);color:var(--bg-white);}.detail-container{max-width:1000px;margin:0 auto;}.detail-header{background:var(--bg-white);padding:40px;border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-bottom:30px;}.detail-title{font-size:36px;color:var(--text-dark);margin-bottom:20px;}.detail-meta{display:flex;flex-wrap:wrap;gap:20px;padding:20px 0;border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);font-size:15px;color:var(--text-gray);}.detail-meta-item{display:flex;align-items:center;}.detail-meta-label{font-weight:600;color:var(--text-dark);margin-right:8px;}.detail-body{background:var(--bg-white);padding:40px;border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-bottom:30px;}.detail-section{margin-bottom:35px;}.detail-section:last-child{margin-bottom:0;}.detail-section-title{font-size:22px;color:var(--text-dark);margin-bottom:15px;padding-left:12px;border-left:4px solid var(--primary-color);}.detail-section-content{font-size:16px;color:var(--text-gray);line-height:1.8;}.detail-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;}.related-section{background:var(--bg-white);padding:40px;border-radius:var(--radius);box-shadow:var(--shadow-sm);}.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;}@media (max-width:767px){.related-grid{grid-template-columns:1fr;}}.site-footer{background:var(--bg-white);padding:30px 0;margin-top:60px;border-top:1px solid var(--border-color);text-align:center;color:var(--text-gray);font-size:14px;}.footer-links{display:flex;justify-content:center;gap:20px;margin-bottom:15px;flex-wrap:wrap;}.footer-links a{color:var(--text-gray);}.footer-links a:hover{color:var(--primary-color);}.back-to-top{position:fixed;bottom:40px;right:40px;width:50px;height:50px;background:var(--primary-color);color:var(--bg-white);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:var(--transition);box-shadow:var(--shadow-md);z-index:999;}.back-to-top.show{opacity:1;visibility:visible;}.back-to-top:hover{background:var(--primary-hover);transform:translateY(-4px);}.error-page{text-align:center;padding:80px 20px;min-height:60vh;display:flex;flex-direction:column;align-items:center;justify-content:center;}.error-code{font-size:120px;font-weight:700;color:var(--primary-color);margin-bottom:20px;line-height:1;}.error-message{font-size:24px;color:var(--text-dark);margin-bottom:30px;}.error-links{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;}.btn{display:inline-block;padding:12px 30px;background:var(--primary-color);color:var(--bg-white);border-radius:var(--radius-sm);font-size:16px;transition:var(--transition);}.btn:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-md);color:var(--bg-white);}.btn-secondary{background:var(--bg-gray);color:var(--text-dark);}.btn-secondary:hover{background:var(--border-color);color:var(--text-dark);}@media (max-width:1024px){.container{padding:0 15px;}.content-section{padding:25px 20px;}.detail-header,.detail-body,.related-section{padding:30px 20px;}}@media (max-width:767px){h1{font-size:26px;}h2{font-size:22px;}h3{font-size:20px;}.page-header{padding:20px 15px;margin-bottom:30px;}.detail-title{font-size:28px;}.detail-meta{font-size:14px;gap:15px;}.back-to-top{bottom:20px;right:20px;width:45px;height:45px;}.error-code{font-size:80px;}.error-message{font-size:20px;}}