*{box-sizing:border-box}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:#f5f5f5;color:#333;line-height:1.6;font-size:16px}nav{background:#fff;box-shadow:0 2px 4px rgba(0,0,0,.1);position:sticky;top:0;z-index:100}nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:nowrap;justify-content:space-between;align-items:center}nav li{flex:1 1 0;min-width:0;text-align:center}nav a{display:block;padding:1rem 0.5rem;text-decoration:none;color:#333;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:background .2s}nav a:hover,nav a[aria-current]{background:#f0f0f0}main{max-width:1200px;margin:0 auto;padding:2rem 1rem}.breadcrumb{padding:0.75rem 1rem;font-size:0.9rem;color:#666;background:#fff;margin-bottom:1rem;border-radius:4px}.breadcrumb a{color:#0066cc;margin:0 0.25rem}.site-header{text-align:center;margin-bottom:3rem;padding:2rem 1rem;background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.05)}.site-header h1{margin:0 0 0.5rem;font-size:2rem;color:#222}.site-header .tagline{margin:0;color:#666;font-size:1rem}.page-header{margin-bottom:2rem;padding:1.5rem;background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.05)}.page-header h1{margin:0 0 0.5rem;font-size:1.75rem}.page-header p{margin:0;color:#666}.intro,.notice{background:#fff;padding:1.5rem;border-radius:8px;margin-bottom:2rem;box-shadow:0 2px 8px rgba(0,0,0,.05)}.intro h2{margin:0 0 1rem;font-size:1.5rem}.notice ul{margin:0.5rem 0;padding-left:2rem}section{margin-bottom:3rem}section h2{font-size:1.5rem;margin:0 0 1.5rem;padding-bottom:0.5rem;border-bottom:2px solid #0066cc}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.card-list{display:flex;flex-direction:column;gap:1rem}.card{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.05);transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.1)}.card h3{margin:0 0 0.5rem;font-size:1.25rem}.card h3 a{color:#222;text-decoration:none}.card h3 a:hover{color:#0066cc}.card .one-line{margin:0.5rem 0;color:#555;font-size:0.95rem}.card .summary{margin:0.5rem 0;color:#666;font-size:0.9rem;line-height:1.5}.card .review{margin:0.5rem 0;color:#666;font-size:0.9rem;font-style:italic}.card .meta{margin:0.5rem 0 0;font-size:0.9rem;color:#999}.card .tags{margin:0.5rem 0 0;font-size:0.85rem;color:#0066cc}.card-num{display:inline-block;background:#0066cc;color:#fff;width:2rem;height:2rem;line-height:2rem;text-align:center;border-radius:50%;font-weight:bold;margin-right:0.5rem;font-size:0.9rem}.more{text-align:center;margin-top:1.5rem}.more a{color:#0066cc;font-weight:500;font-size:1.05rem}.video-detail header{background:#fff;padding:2rem;border-radius:8px;margin-bottom:2rem;box-shadow:0 2px 8px rgba(0,0,0,.05)}.video-detail h1{margin:0 0 0.5rem;font-size:2rem}.video-detail .subtitle{margin:0;color:#666}.basic-info{background:#fff;padding:1.5rem;border-radius:8px;margin-bottom:2rem;box-shadow:0 2px 8px rgba(0,0,0,.05)}.basic-info dl{display:grid;grid-template-columns:80px 1fr;gap:0.75rem;margin:0 0 1rem}.basic-info dt{font-weight:600;color:#666}.basic-info dd{margin:0;color:#333}.one-line,.summary,.review{background:#fff;padding:1.5rem;border-radius:8px;margin-bottom:2rem;box-shadow:0 2px 8px rgba(0,0,0,.05)}.one-line h2,.summary h2,.review h2{margin:0 0 1rem;font-size:1.25rem;color:#0066cc}.one-line p,.summary p,.review p{margin:0;line-height:1.8}.related{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.05)}.related h2{margin:0 0 1rem;font-size:1.25rem}.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}.related-card{padding:1rem;border:1px solid #e0e0e0;border-radius:6px;transition:border-color .2s}.related-card:hover{border-color:#0066cc}.related-card h4{margin:0 0 0.5rem;font-size:1rem}.related-card h4 a{color:#222;text-decoration:none}.related-card h4 a:hover{color:#0066cc}.related-card p{margin:0;font-size:0.9rem;color:#666}.error-page{text-align:center;padding:4rem 1rem;background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.05)}.error-page h1{font-size:4rem;margin:0;color:#0066cc}.error-page p{font-size:1.25rem;color:#666}footer{text-align:center;padding:2rem 1rem;color:#999;font-size:0.9rem;border-top:1px solid #e0e0e0;margin-top:3rem}footer a{color:#0066cc}a{color:#0066cc;text-decoration:none}a:hover{text-decoration:underline}@media(max-width:768px){nav a{font-size:0.85rem;padding:0.75rem 0.25rem}main{padding:1rem 0.5rem}.site-header h1{font-size:1.5rem}.page-header h1{font-size:1.35rem}.card-grid{grid-template-columns:1fr;gap:1rem}.video-detail h1{font-size:1.5rem}.basic-info dl{grid-template-columns:70px 1fr}.related-grid{grid-template-columns:1fr}}