.hero { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; padding: 60px 40px; border-radius: 12px; margin-bottom: 40px; text-align: center; }
.hero h1 { font-size: 32px; margin-bottom: 20px; line-height: 1.4; }
.hero-desc { font-size: 16px; line-height: 1.8; margin-bottom: 16px; opacity: 0.95; }
.hero-tags { font-size: 14px; opacity: 0.85; }
.site-intro { background: #fff; padding: 40px; border-radius: 8px; margin-bottom: 40px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.site-intro h2 { font-size: 24px; margin-bottom: 20px; color: #2c3e50; border-bottom: 3px solid #3498db; padding-bottom: 10px; }
.site-intro p { font-size: 15px; line-height: 1.8; color: #555; }
section { margin-bottom: 50px; }
section h2 { font-size: 28px; margin-bottom: 25px; color: #2c3e50; position: relative; padding-left: 16px; }
section h2:before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 5px; height: 24px; background: #3498db; border-radius: 2px; }
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.video-card { background: #fff; padding: 24px; border-radius: 8px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); transition: transform 0.3s, box-shadow 0.3s; }
.video-card:hover { transform: translateY(-4px); box-shadow: 0 4px 20px rgba(0,0,0,0.15); }
.video-card h3 { font-size: 18px; margin-bottom: 12px; color: #2c3e50; }
.video-card h3 a { color: #2c3e50; }
.video-card h3 a:hover { color: #3498db; text-decoration: none; }
.video-meta { font-size: 13px; color: #888; margin-bottom: 10px; }
.video-one-line { font-size: 14px; color: #666; line-height: 1.6; margin-bottom: 12px; }
.read-more { display: inline-block; padding: 6px 16px; background: #3498db; color: #fff; border-radius: 4px; font-size: 14px; transition: background 0.3s; }
.read-more:hover { background: #2980b9; text-decoration: none; }
.link-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.link-card { background: #fff; padding: 30px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); text-align: center; transition: all 0.3s; }
.link-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.15); }
.link-card h3 { font-size: 20px; margin-bottom: 12px; }
.link-card h3 a { color: #3498db; }
.link-card p { font-size: 14px; color: #666; }
.video-list { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.video-item { display: flex; align-items: center; padding: 16px 0; border-bottom: 1px solid #eee; gap: 16px; }
.video-item:last-child { border-bottom: none; }
.video-item .rank { width: 32px; height: 32px; background: #3498db; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0; }
.video-item h3 { flex: 1; font-size: 16px; }
.video-item h3 a { color: #333; }
.video-item h3 a:hover { color: #3498db; }
.video-year { font-size: 14px; color: #888; flex-shrink: 0; }
.more-link { text-align: center; margin-top: 20px; }
.more-link a { font-size: 16px; color: #3498db; padding: 8px 20px; border: 2px solid #3498db; border-radius: 4px; display: inline-block; transition: all 0.3s; }
.more-link a:hover { background: #3498db; color: #fff; text-decoration: none; }
.page-header { text-align: center; margin-bottom: 40px; padding: 40px 20px; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; border-radius: 12px; }
.page-header h1 { font-size: 32px; margin-bottom: 16px; }
.page-header p { font-size: 16px; line-height: 1.8; opacity: 0.95; }
.video-grid-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; }
.video-card-list { background: #fff; padding: 24px; border-radius: 8px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); position: relative; transition: all 0.3s; }
.video-card-list:hover { transform: translateY(-4px); box-shadow: 0 4px 20px rgba(0,0,0,0.15); }
.video-card-list h3 { font-size: 18px; margin-bottom: 12px; color: #2c3e50; }
.video-card-list h3 a { color: #2c3e50; }
.video-card-list h3 a:hover { color: #3498db; text-decoration: none; }
.video-card-list .video-summary { font-size: 14px; color: #666; line-height: 1.7; margin: 12px 0; }
.video-card-list.with-rank { padding-left: 70px; }
.rank-badge { position: absolute; left: 20px; top: 20px; width: 40px; height: 40px; background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: bold; }
.date-tag { display: inline-block; padding: 4px 12px; background: #e8f4f8; color: #3498db; border-radius: 4px; font-size: 12px; margin-top: 8px; }
.btn-detail { display: inline-block; margin-top: 12px; padding: 6px 16px; background: #3498db; color: #fff; border-radius: 4px; font-size: 14px; transition: background 0.3s; }
.btn-detail:hover { background: #2980b9; text-decoration: none; }
.detail-page { background: #fff; padding: 40px; border-radius: 12px; box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.detail-header { text-align: center; padding-bottom: 30px; border-bottom: 2px solid #eee; margin-bottom: 30px; }
.detail-header h1 { font-size: 36px; color: #2c3e50; margin-bottom: 12px; }
.detail-subtitle { font-size: 16px; color: #888; }
.detail-info h2, .detail-oneline h2, .detail-summary h2, .detail-review h2, .detail-related h2 { font-size: 24px; margin-bottom: 20px; color: #2c3e50; padding-left: 0; }
.detail-info h2:before, .detail-oneline h2:before, .detail-summary h2:before, .detail-review h2:before, .detail-related h2:before { display: none; }
.info-list { list-style: none; font-size: 15px; line-height: 2; }
.info-list li { padding: 8px 0; border-bottom: 1px solid #f0f0f0; }
.info-list li:last-child { border-bottom: none; }
.info-list strong { color: #2c3e50; display: inline-block; width: 80px; }
.highlight { font-size: 18px; color: #3498db; font-weight: 500; line-height: 1.8; padding: 20px; background: #f0f8ff; border-left: 4px solid #3498db; border-radius: 4px; }
.detail-summary p, .detail-review .review-text { font-size: 15px; line-height: 1.9; color: #555; margin-bottom: 16px; text-indent: 2em; }
.review-text { background: #fff9e6; padding: 20px; border-left: 4px solid #f39c12; border-radius: 4px; font-style: italic; text-indent: 0; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.related-card { background: #f8f9fa; padding: 20px; border-radius: 8px; border: 1px solid #e0e0e0; transition: all 0.3s; }
.related-card:hover { background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,0.1); }
.related-card h3 { font-size: 16px; margin-bottom: 8px; }
.related-card h3 a { color: #2c3e50; }
.related-card h3 a:hover { color: #3498db; }
.related-meta { font-size: 13px; color: #888; margin-bottom: 8px; }
.related-desc { font-size: 14px; color: #666; line-height: 1.6; }
@media (max-width: 768px) {
  .hero { padding: 40px 20px; }
  .hero h1 { font-size: 24px; }
  .site-intro { padding: 24px; }
  section h2 { font-size: 22px; }
  .detail-page { padding: 24px; }
  .detail-header h1 { font-size: 28px; }
  .video-grid, .video-grid-list, .related-grid { grid-template-columns: 1fr; }
}