body { margin: 0; padding: 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 2rem; }
.hero { text-align: center; padding: 3rem 0; background: white; margin-bottom: 2rem; border-radius: 8px; }
.hero h1 { font-size: 2rem; margin-bottom: 1rem; color: #2c3e50; }
.site-intro { line-height: 1.8; color: #555; max-width: 900px; margin: 0 auto; }
section { margin-bottom: 3rem; background: white; padding: 2rem; border-radius: 8px; }
h2 { color: #2c3e50; border-left: 4px solid #3498db; padding-left: 1rem; margin-bottom: 1.5rem; }
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
.video-card { border: 1px solid #e0e0e0; padding: 1.5rem; border-radius: 8px; transition: all 0.3s; }
.video-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.1); transform: translateY(-2px); }
.video-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.video-card h3 a { color: #2c3e50; }
.video-card h3 a:hover { color: #3498db; }
.meta { color: #777; font-size: 0.9rem; margin-bottom: 0.5rem; }
.desc { color: #555; line-height: 1.6; }
.video-list { list-style: none; }
.video-list li { border-bottom: 1px solid #eee; padding: 1rem 0; display: flex; justify-content: space-between; align-items: center; }
.video-list li:hover { background: #f9f9f9; }
.video-list .title { font-weight: 500; color: #2c3e50; }
.video-list .year { color: #777; }
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(350px, 1fr)); gap: 1.5rem; }
.topic-item { padding: 1rem; border: 1px solid #e0e0e0; border-radius: 6px; }
.topic-item h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.tags { color: #3498db; font-size: 0.9rem; margin-bottom: 0.5rem; }
.summary { color: #666; line-height: 1.6; }
.more-link { display: inline-block; margin-top: 1rem; color: #3498db; font-weight: 500; }
.more-link:hover { text-decoration: underline; }
.quick-links ul { list-style: none; }
.quick-links li { padding: 0.8rem 0; border-bottom: 1px solid #eee; }
.quick-links a { color: #2c3e50; font-weight: 500; }
.quick-links a:hover { color: #3498db; }
footer { background: #2c3e50; color: white; text-align: center; padding: 2rem; margin-top: 3rem; }
.page-header { margin-bottom: 2rem; }
.page-header h1 { font-size: 2rem; color: #2c3e50; }
.page-desc { color: #666; line-height: 1.8; margin-top: 1rem; }
.video-item { border: 1px solid #e0e0e0; padding: 1.5rem; margin-bottom: 1.5rem; border-radius: 6px; }
.video-item h3 { font-size: 1.3rem; margin-bottom: 0.5rem; }
.video-item h3 a { color: #2c3e50; }
.video-item h3 a:hover { color: #3498db; }
.group-label { display: inline-block; background: #ecf0f1; padding: 0.3rem 0.8rem; border-radius: 4px; font-size: 0.85rem; margin-bottom: 0.5rem; }
.rank { display: inline-block; background: #e74c3c; color: white; padding: 0.3rem 0.8rem; border-radius: 4px; font-weight: bold; margin-right: 1rem; }
.date { display: inline-block; background: #3498db; color: white; padding: 0.3rem 0.8rem; border-radius: 4px; font-size: 0.85rem; margin-right: 1rem; }
.genre { color: #3498db; margin: 0.5rem 0; }
.oneline, .highlight { color: #e74c3c; font-weight: 500; margin: 0.5rem 0; }
.brief { color: #777; font-size: 0.9rem; }
.review { color: #555; font-style: italic; margin-top: 0.5rem; padding-left: 1rem; border-left: 3px solid #3498db; }
.compact { padding: 1rem; }
.detail-page .subtitle { color: #777; font-size: 1.1rem; margin-top: 0.5rem; }
.basic-info dl { display: grid; grid-template-columns: 100px 1fr; gap: 0.8rem; line-height: 1.8; }
.basic-info dt { font-weight: bold; color: #555; }
.basic-info dd { color: #333; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.related-item { border: 1px solid #e0e0e0; padding: 1rem; border-radius: 6px; }
.related-item h3 { font-size: 1rem; margin-bottom: 0.5rem; }
blockquote { background: #f9f9f9; border-left: 4px solid #3498db; padding: 1rem; margin: 1rem 0; font-style: italic; color: #555; }
@media (max-width: 768px) {
  .container { padding: 1rem; }
  .hero h1 { font-size: 1.5rem; }
  .video-grid, .topic-grid, .related-grid { grid-template-columns: 1fr; }
  .basic-info dl { grid-template-columns: 80px 1fr; font-size: 0.9rem; }
}