.container { max-width: 1200px; margin: 0 auto; padding: 20px; }
.hero { text-align: center; padding: 40px 20px; background: #fff; border-radius: 8px; margin-bottom: 30px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.hero h1 { font-size: 28px; color: #1890ff; margin-bottom: 16px; }
.hero .intro { font-size: 16px; color: #666; line-height: 1.8; max-width: 900px; margin: 0 auto; }

.module { background: #fff; border-radius: 8px; padding: 30px; margin-bottom: 30px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.module h2 { font-size: 24px; margin-bottom: 20px; color: #333; border-left: 4px solid #1890ff; padding-left: 12px; }

.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.video-card { padding: 16px; border: 1px solid #e8e8e8; border-radius: 6px; 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: 16px; margin-bottom: 8px; }
.video-card h3 a { text-decoration: none; color: #333; }
.video-card h3 a:hover { color: #1890ff; }
.video-card .meta { font-size: 13px; color: #999; margin-bottom: 8px; }
.video-card .oneline { font-size: 14px; color: #666; line-height: 1.6; }

.video-list { display: flex; flex-direction: column; gap: 16px; }
.video-item { padding: 16px; border-left: 3px solid #1890ff; background: #fafafa; border-radius: 4px; }
.video-item a { text-decoration: none; color: inherit; display: block; }
.video-item:hover { background: #f0f0f0; }
.video-item h3 { font-size: 16px; margin-bottom: 8px; color: #333; }
.video-item .meta { font-size: 13px; color: #999; margin-bottom: 8px; }
.video-item .summary { font-size: 14px; color: #666; line-height: 1.6; }

.topic-links { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.topic-card { display: block; padding: 24px; border: 2px solid #1890ff; border-radius: 8px; text-decoration: none; color: inherit; transition: all 0.3s; }
.topic-card:hover { background: #e6f7ff; transform: translateY(-2px); }
.topic-card h3 { font-size: 18px; color: #1890ff; margin-bottom: 8px; }
.topic-card p { font-size: 14px; color: #666; }

.more-link { text-align: right; margin-top: 16px; }
.more-link a { color: #1890ff; text-decoration: none; font-size: 14px; }
.more-link a:hover { text-decoration: underline; }

.list-page { padding-top: 30px; }
.list-page h1 { font-size: 32px; margin-bottom: 16px; color: #333; }
.page-intro { font-size: 16px; color: #666; margin-bottom: 30px; line-height: 1.8; padding: 20px; background: #fff; border-radius: 8px; }

.video-list-full { display: flex; flex-direction: column; gap: 20px; }
.video-item-full { background: #fff; padding: 24px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); position: relative; }
.video-item-full .rank { position: absolute; top: 24px; right: 24px; background: #ff4d4f; color: #fff; padding: 4px 12px; border-radius: 12px; font-weight: bold; font-size: 14px; }
.video-item-full .date-tag { position: absolute; top: 24px; right: 24px; background: #52c41a; color: #fff; padding: 4px 12px; border-radius: 4px; font-size: 12px; }
.video-item-full h2 { font-size: 20px; margin-bottom: 12px; }
.video-item-full h2 a { text-decoration: none; color: #333; }
.video-item-full h2 a:hover { color: #1890ff; }
.video-item-full .meta { font-size: 14px; color: #999; margin-bottom: 12px; }
.video-item-full .oneline { font-size: 15px; color: #1890ff; margin-bottom: 8px; font-weight: 500; }
.video-item-full .summary { font-size: 14px; color: #666; line-height: 1.8; }

.detail-page { padding-top: 30px; }
.video-detail { background: #fff; border-radius: 8px; padding: 40px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.video-detail h1 { font-size: 32px; margin-bottom: 24px; color: #333; border-bottom: 3px solid #1890ff; padding-bottom: 16px; }
.basic-info { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-bottom: 30px; padding: 20px; background: #fafafa; border-radius: 6px; }
.basic-info p { font-size: 14px; color: #666; }
.basic-info strong { color: #333; }

.oneline-section, .summary-section, .review-section, .related-section { margin-bottom: 30px; }
.oneline-section h2, .summary-section h2, .review-section h2, .related-section h2 { font-size: 22px; margin-bottom: 16px; color: #333; border-left: 4px solid #1890ff; padding-left: 12px; }
.oneline-text { font-size: 16px; color: #1890ff; font-weight: 500; line-height: 1.8; }
.summary-text, .review-text { font-size: 15px; color: #666; line-height: 1.8; text-align: justify; }

.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.related-card { padding: 16px; border: 1px solid #e8e8e8; border-radius: 6px; transition: all 0.3s; }
.related-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.related-card h3 { font-size: 15px; margin-bottom: 8px; }
.related-card h3 a { text-decoration: none; color: #333; }
.related-card h3 a:hover { color: #1890ff; }
.related-card .meta { font-size: 12px; color: #999; margin-bottom: 8px; }
.related-card .oneline { font-size: 13px; color: #666; }

@media (max-width: 768px) {
  .container { padding: 12px; }
  .hero { padding: 24px 16px; }
  .hero h1 { font-size: 22px; }
  .module { padding: 20px 16px; }
  .video-grid { grid-template-columns: 1fr; gap: 16px; }
  .video-detail { padding: 24px 16px; }
  .basic-info { grid-template-columns: 1fr; }
}