:root{--primary-color:#2c3e50;--secondary-color:#3498db;--accent-color:#e74c3c;--text-color:#333;--bg-color:#f5f5f5;--card-bg:#fff;--border-color:#ddd;--spacing:1rem}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";line-height:1.6;color:var(--text-color);background:var(--bg-color)}*{box-sizing:border-box}a{color:var(--secondary-color);text-decoration:none;transition:opacity 0.2s}a:hover{opacity:0.8}header{background:var(--primary-color);color:white;padding:1rem 0;position:sticky;top:0;z-index:100;box-shadow:0 2px 4px rgba(0,0,0,0.1)}header nav{max-width:1200px;margin:0 auto;padding:0 1rem;display:flex;flex-wrap:nowrap;align-items:center;justify-content:space-between}header nav a{color:white;flex:1 1 0;min-width:0;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding:0.5rem;font-weight:500}header nav a:hover,header nav a[aria-current="page"]{background:rgba(255,255,255,0.1);border-radius:4px}.breadcrumb{max-width:1200px;margin:0 auto;padding:0.75rem 1rem;font-size:0.875rem;color:#666;background:white;border-bottom:1px solid var(--border-color)}.breadcrumb a{color:var(--secondary-color)}.breadcrumb span{color:#666}main{max-width:1200px;margin:0 auto;padding:2rem 1rem}section{margin-bottom:3rem}h1{font-size:2rem;margin:0 0 1rem;color:var(--primary-color);line-height:1.2}h2{font-size:1.5rem;margin:0 0 1rem;color:var(--primary-color);line-height:1.2}h3{font-size:1.25rem;margin:0 0 0.5rem;line-height:1.3}.hero{text-align:center;padding:2rem 0;background:white;border-radius:8px;margin-bottom:2rem;box-shadow:0 2px 8px rgba(0,0,0,0.05)}.intro,.page-intro{font-size:1.1rem;line-height:1.8;color:#555;max-width:800px;margin:1rem auto}.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.video-card{background:var(--card-bg);border-radius:8px;padding:1.5rem;box-shadow:0 2px 8px rgba(0,0,0,0.08);transition:transform 0.2s,box-shadow 0.2s;position:relative}.video-card:hover{transform:translateY(-4px);box-shadow:0 4px 12px rgba(0,0,0,0.15)}.video-card h3{margin-top:0}.video-card h3 a{color:var(--primary-color)}.video-card .meta,.video-card .genre{font-size:0.875rem;color:#777;margin:0.5rem 0}.video-card .oneline{color:#555;font-size:0.95rem;line-height:1.5}.video-card .summary{font-size:0.9rem;color:#666;line-height:1.6;margin-top:0.5rem}.video-card .tags{font-size:0.8rem;color:#999;margin-top:0.5rem}.video-card .rank{position:absolute;top:0.5rem;right:0.5rem;background:var(--accent-color);color:white;width:2rem;height:2rem;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:bold;font-size:0.875rem}.entrance-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}.entrance-card{background:var(--card-bg);border-radius:8px;padding:2rem;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,0.08);transition:transform 0.2s}.entrance-card:hover{transform:translateY(-4px)}.entrance-card h3 a{color:var(--primary-color);font-size:1.3rem}.entrance-card p{color:#666;margin-top:0.5rem}.more-link{text-align:center;margin-top:2rem}.more-link a{display:inline-block;padding:0.75rem 2rem;background:var(--secondary-color);color:white;border-radius:4px;font-weight:500}.more-link a:hover{opacity:0.9}.other-lists{background:#fffbf0;border-left:4px solid var(--accent-color);padding:1rem 1.5rem;margin:1.5rem 0;border-radius:4px}.other-lists ul{list-style:disc;padding-left:1.5rem;margin:0.5rem 0 0}.other-lists li{margin:0.5rem 0}.video-detail header{background:white;padding:2rem;border-radius:8px;margin-bottom:1.5rem;box-shadow:0 2px 8px rgba(0,0,0,0.05)}.video-detail .meta-info{display:flex;flex-wrap:wrap;gap:1rem;margin:1rem 0;font-size:0.95rem}.video-detail .meta-info span{background:var(--bg-color);padding:0.25rem 0.75rem;border-radius:4px;color:#555}.video-detail .tags{margin-top:1rem;font-size:0.875rem;color:#666}.video-detail section{background:white;padding:1.5rem;border-radius:8px;margin-bottom:1.5rem;box-shadow:0 2px 8px rgba(0,0,0,0.05)}.video-detail section h2{font-size:1.25rem;margin-bottom:1rem;padding-bottom:0.5rem;border-bottom:2px solid var(--border-color)}.video-detail section p{line-height:1.8;color:#555}.error-page{text-align:center;padding:4rem 2rem;background:white;border-radius:8px}footer{background:var(--primary-color);color:white;text-align:center;padding:2rem 1rem;margin-top:3rem}footer p{margin:0;font-size:0.9rem}@media (max-width:768px){header nav{padding:0 0.5rem}header nav a{font-size:0.85rem;padding:0.4rem 0.25rem}h1{font-size:1.5rem}h2{font-size:1.25rem}.video-grid{grid-template-columns:1fr;gap:1rem}.entrance-grid{grid-template-columns:1fr}main{padding:1rem 0.5rem}.breadcrumb{font-size:0.8rem;padding:0.5rem}}ul,ol{list-style:none;padding:0;margin:0}img{max-width:100%;height:auto;display:block}