body { font-family: "Microsoft YaHei", Arial, sans-serif; background: #f5f5f5; color: #333; line-height: 1.6; }
.main { min-height: calc(100vh - 200px); padding: 2rem 0; }
.page-title { font-size: 2rem; margin-bottom: 1rem; color: #2c3e50; }
.intro-section { background: white; padding: 2rem; margin-bottom: 2rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.intro-text { font-size: 1rem; color: #555; line-height: 1.8; }
.video-section { margin-bottom: 3rem; }
.section-title { font-size: 1.5rem; margin-bottom: 1.5rem; color: #2c3e50; border-left: 4px solid #667eea; padding-left: 1rem; }
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin-bottom: 1rem; }
.video-card { background: white; padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); transition: transform 0.3s, box-shadow 0.3s; }
.video-card:hover { transform: translateY(-4px); box-shadow: 0 4px 16px rgba(0,0,0,0.1); }
.video-title { font-size: 1.2rem; margin-bottom: 0.5rem; }
.video-title a { color: #2c3e50; text-decoration: none; }
.video-title a:hover { color: #667eea; }
.video-meta { font-size: 0.9rem; color: #888; margin-bottom: 0.5rem; }
.video-desc { font-size: 0.95rem; color: #666; line-height: 1.6; }
.video-list { display: flex; flex-direction: column; gap: 1rem; }
.video-item { background: white; padding: 1.2rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.video-item h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.video-item a { color: #2c3e50; text-decoration: none; }
.video-item a:hover { color: #667eea; }
.video-brief { font-size: 0.9rem; color: #666; }
.topic-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
.topic-item { background: white; padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.topic-item h3 { font-size: 1.2rem; margin-bottom: 0.8rem; }
.topic-item a { color: #2c3e50; text-decoration: none; }
.topic-item a:hover { color: #667eea; }
.topic-item p { color: #666; }
.more-link { text-align: center; margin-top: 1.5rem; }
.more-link a { color: #667eea; text-decoration: none; font-weight: bold; }
.more-link a:hover { text-decoration: underline; }
.list-container { display: flex; flex-direction: column; gap: 1rem; }
.list-card { background: white; padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.list-card h3 { font-size: 1.3rem; margin-bottom: 0.8rem; }
.list-card a { color: #2c3e50; text-decoration: none; }
.list-card a:hover { color: #667eea; }
.list-card .meta { font-size: 0.9rem; color: #888; margin-bottom: 0.5rem; }
.list-card .desc { color: #666; line-height: 1.6; margin-bottom: 0.5rem; }
.rank-card { display: flex; gap: 1rem; align-items: flex-start; }
.rank-num { font-size: 2rem; font-weight: bold; color: #667eea; min-width: 50px; }
.list-content { flex: 1; }
.topic-card .tag { background: #667eea; color: white; padding: 0.2rem 0.6rem; border-radius: 4px; font-size: 0.85rem; }
.topic-card .tags { font-size: 0.85rem; color: #999; margin-top: 0.5rem; }
.latest-card .update-date { font-size: 0.85rem; color: #999; margin-top: 0.5rem; }
.page-intro { background: white; padding: 1.5rem; margin-bottom: 2rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); color: #666; }
.detail-article { background: white; padding: 2.5rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.detail-title { font-size: 2.2rem; margin-bottom: 1.5rem; color: #2c3e50; }
.detail-info { margin-bottom: 2rem; }
.detail-info h2 { font-size: 1.4rem; margin-bottom: 1rem; color: #2c3e50; }
.info-list { list-style: none; }
.info-list li { padding: 0.5rem 0; border-bottom: 1px solid #eee; }
.detail-section { margin-bottom: 2rem; }
.detail-section h2 { font-size: 1.4rem; margin-bottom: 1rem; color: #2c3e50; }
.highlight-text { font-size: 1.1rem; color: #667eea; font-weight: 500; line-height: 1.8; }
.summary-text p { margin-bottom: 1rem; line-height: 1.8; color: #555; text-indent: 2em; }
.review-text { background: #f8f9fa; padding: 1.5rem; border-radius: 8px; border-left: 4px solid #667eea; line-height: 1.8; color: #555; }
.related-section h2 { font-size: 1.4rem; margin-bottom: 1.5rem; color: #2c3e50; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1.5rem; }
.related-card { background: #f8f9fa; padding: 1.2rem; border-radius: 8px; transition: background 0.3s; }
.related-card:hover { background: #e9ecef; }
.related-card h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
.related-card a { color: #2c3e50; text-decoration: none; }
.related-card a:hover { color: #667eea; }
.related-card .brief { font-size: 0.9rem; color: #666; }
.footer { background: #2c3e50; color: white; padding: 2rem 0; text-align: center; margin-top: 3rem; }
@media (max-width: 768px) {
  .page-title { font-size: 1.5rem; }
  .section-title { font-size: 1.2rem; }
  .video-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .topic-list { grid-template-columns: 1fr; }
  .detail-article { padding: 1.5rem; }
  .detail-title { font-size: 1.8rem; }
}