.hero { background: #fff; padding: 40px; border-radius: 8px; margin-bottom: 30px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.hero h1 { font-size: 28px; color: #e74c3c; margin-bottom: 20px; line-height: 1.5; }
.intro { font-size: 16px; line-height: 1.8; color: #555; }
.intro a { color: #e74c3c; text-decoration: underline; }

section { margin-bottom: 40px; }
section h2 { font-size: 24px; margin-bottom: 20px; color: #333; border-left: 4px solid #e74c3c; padding-left: 15px; }

.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.video-card { background: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); transition: transform 0.3s, box-shadow 0.3s; }
.video-card:hover { transform: translateY(-5px); box-shadow: 0 4px 16px rgba(0,0,0,0.15); }
.video-card h3 { margin-bottom: 10px; }
.video-card h3 a { color: #333; text-decoration: none; font-size: 18px; }
.video-card h3 a:hover { color: #e74c3c; }
.video-card .meta { color: #888; font-size: 13px; margin-bottom: 8px; }
.video-card .desc { color: #666; font-size: 14px; line-height: 1.6; }

.entry-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.entry-card { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; padding: 30px; border-radius: 8px; text-align: center; transition: transform 0.3s; }
.entry-card:hover { transform: scale(1.05); }
.entry-card h3 { margin-bottom: 15px; }
.entry-card h3 a { color: #fff; text-decoration: none; font-size: 20px; }
.entry-card p { font-size: 14px; opacity: 0.9; }

.video-list { background: #fff; padding: 20px; border-radius: 8px; }
.video-item { padding: 20px; border-bottom: 1px solid #eee; }
.video-item:last-child { border-bottom: none; }
.video-item h3 { margin-bottom: 8px; }
.video-item h3 a { color: #333; text-decoration: none; font-size: 18px; }
.video-item h3 a:hover { color: #e74c3c; }
.video-item .meta { color: #888; font-size: 13px; margin-bottom: 8px; }
.video-item .summary { color: #666; font-size: 14px; line-height: 1.6; }

.page-intro { background: #fff; padding: 20px; border-radius: 8px; margin-bottom: 30px; font-size: 15px; line-height: 1.8; color: #555; }

.list-container { background: #fff; padding: 20px; border-radius: 8px; }
.list-item { padding: 20px; border-bottom: 1px solid #eee; position: relative; }
.list-item:last-child { border-bottom: none; }
.list-item h3 { margin-bottom: 10px; }
.list-item h3 a { color: #333; text-decoration: none; font-size: 18px; }
.list-item h3 a:hover { color: #e74c3c; }
.list-item .meta { color: #888; font-size: 13px; margin-bottom: 5px; }
.list-item .tags { color: #999; font-size: 12px; margin-bottom: 8px; }
.list-item .desc { color: #666; font-size: 14px; line-height: 1.6; }
.list-item .summary-short { color: #777; font-size: 13px; margin-top: 8px; }

.rank { position: absolute; top: 15px; right: 20px; background: #e74c3c; color: #fff; width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; font-size: 18px; }
.topic-tag { display: inline-block; background: #667eea; color: #fff; padding: 4px 12px; border-radius: 4px; font-size: 12px; margin-bottom: 8px; }
.year-tag { display: inline-block; background: #27ae60; color: #fff; padding: 4px 12px; border-radius: 4px; font-size: 12px; margin-right: 10px; }

.detail-page { background: #fff; padding: 40px; border-radius: 8px; }
.detail-page h1 { font-size: 28px; color: #333; margin-bottom: 30px; border-bottom: 2px solid #e74c3c; padding-bottom: 15px; }
.detail-page section { margin-bottom: 30px; }
.detail-page h2 { font-size: 20px; color: #e74c3c; margin-bottom: 15px; }
.basic-info ul { list-style: none; }
.basic-info li { padding: 8px 0; border-bottom: 1px dashed #eee; font-size: 15px; }
.basic-info li:last-child { border-bottom: none; }
.highlight { font-size: 18px; color: #e74c3c; font-weight: bold; line-height: 1.8; background: #fff5f5; padding: 15px; border-radius: 6px; border-left: 4px solid #e74c3c; }
.summary p, .review p { font-size: 15px; line-height: 1.8; color: #555; text-indent: 2em; }

.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }
.related-card { background: #f8f9fa; padding: 15px; border-radius: 6px; border: 1px solid #e9ecef; transition: all 0.3s; }
.related-card:hover { background: #fff; border-color: #e74c3c; }
.related-card h3 { font-size: 16px; margin-bottom: 8px; }
.related-card h3 a { color: #333; text-decoration: none; }
.related-card h3 a:hover { color: #e74c3c; }
.related-card .meta { color: #888; font-size: 12px; margin-bottom: 5px; }
.related-card .desc { color: #666; font-size: 13px; line-height: 1.5; }

@media (max-width: 768px) {
  .hero { padding: 20px; }
  .hero h1 { font-size: 20px; }
  .intro { font-size: 14px; }
  section h2 { font-size: 20px; }
  .video-grid { grid-template-columns: 1fr; }
  .entry-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .detail-page { padding: 20px; }
  .detail-page h1 { font-size: 22px; }
}