.container { max-width: 1200px; margin: 0 auto; padding: 20px; }
.site-header { text-align: center; padding: 40px 20px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; margin-bottom: 30px; }
.logo { font-size: 28px; font-weight: bold; margin-bottom: 15px; }
.site-title { font-size: 24px; font-weight: 600; line-height: 1.4; }

.intro-section, .hot-section, .rank-section, .latest-section, .topic-container { background: #fff; padding: 30px; margin-bottom: 30px; border-radius: 8px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.intro-section h2, .hot-section h2, .rank-section h2, .latest-section h2 { font-size: 22px; margin-bottom: 20px; color: #333; border-left: 4px solid #667eea; padding-left: 12px; }
.intro-content p { margin-bottom: 15px; color: #555; line-height: 1.8; }
.intro-content a { color: #667eea; text-decoration: underline; }

.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.video-card { background: #f9fafb; padding: 20px; border-radius: 6px; transition: all 0.3s; border: 1px solid #e5e7eb; }
.video-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.1); transform: translateY(-2px); }
.video-card h3 { font-size: 18px; margin-bottom: 10px; }
.video-card h3 a { color: #333; }
.video-card h3 a:hover { color: #667eea; }
.video-meta { font-size: 13px; color: #999; margin-bottom: 8px; }
.video-desc { font-size: 14px; color: #666; line-height: 1.6; }

.more-link { text-align: center; margin-top: 20px; }
.more-link a { color: #667eea; font-size: 16px; }

.list-page h1 { font-size: 28px; margin-bottom: 15px; color: #333; }
.page-intro { font-size: 15px; color: #666; margin-bottom: 25px; line-height: 1.6; }

.list-container .list-item { background: #fff; padding: 20px; margin-bottom: 15px; border-radius: 6px; border: 1px solid #e5e7eb; }
.list-item h3 { font-size: 18px; margin-bottom: 8px; }
.list-item h3 a { color: #333; }
.list-item h3 a:hover { color: #667eea; }

.rank-list .rank-item { display: flex; align-items: flex-start; background: #fff; padding: 18px; margin-bottom: 12px; border-radius: 6px; border: 1px solid #e5e7eb; }
.rank-num { display: inline-block; width: 40px; height: 40px; background: #667eea; color: #fff; text-align: center; line-height: 40px; border-radius: 4px; font-size: 18px; font-weight: bold; flex-shrink: 0; margin-right: 15px; }
.rank-content { flex: 1; }
.rank-content h3 { font-size: 17px; margin-bottom: 6px; }

.topic-group { margin-bottom: 35px; }
.topic-group h3 { font-size: 20px; margin-bottom: 18px; color: #333; border-left: 4px solid #667eea; padding-left: 10px; }
.topic-videos { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 15px; }
.topic-item { background: #f9fafb; padding: 16px; border-radius: 6px; border: 1px solid #e5e7eb; }
.topic-item h4 { font-size: 16px; margin-bottom: 8px; }
.topic-item h4 a { color: #333; }
.topic-item h4 a:hover { color: #667eea; }
.topic-item p { font-size: 14px; color: #666; }

.latest-list .latest-item { display: flex; align-items: flex-start; background: #fff; padding: 18px; margin-bottom: 12px; border-radius: 6px; border: 1px solid #e5e7eb; }
.latest-date { display: inline-block; width: 60px; text-align: center; background: #f0f2f5; padding: 8px 4px; border-radius: 4px; font-size: 14px; color: #666; flex-shrink: 0; margin-right: 15px; }
.latest-content { flex: 1; }
.latest-content h3 { font-size: 17px; margin-bottom: 6px; }

.detail-page { background: #fff; padding: 30px; border-radius: 8px; }
.video-detail h1 { font-size: 30px; margin-bottom: 25px; color: #333; }
.video-info { background: #f9fafb; padding: 20px; border-radius: 6px; margin-bottom: 25px; }
.video-info p { margin-bottom: 10px; font-size: 15px; color: #555; }
.video-highlight, .video-summary, .video-review { margin-bottom: 30px; }
.video-highlight h2, .video-summary h2, .video-review h2, .related-videos h2 { font-size: 20px; margin-bottom: 15px; color: #333; border-left: 4px solid #667eea; padding-left: 10px; }
.video-highlight p, .video-summary p, .video-review p { font-size: 15px; color: #555; line-height: 1.8; }

.related-videos { margin-top: 40px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 15px; }
.related-item { background: #f9fafb; padding: 16px; border-radius: 6px; border: 1px solid #e5e7eb; }
.related-item h4 { font-size: 16px; margin-bottom: 8px; }
.related-item h4 a { color: #333; }
.related-item h4 a:hover { color: #667eea; }
.related-item p { font-size: 14px; color: #666; }

.site-footer { background: #2c3e50; color: #ecf0f1; text-align: center; padding: 30px 20px; margin-top: 40px; }
.footer-content p { margin-bottom: 8px; font-size: 14px; }
.footer-note { font-size: 13px; color: #95a5a6; }

@media (max-width: 768px) {
  .site-title { font-size: 18px; }
  .video-grid { grid-template-columns: 1fr; }
  .topic-videos { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
}