.container { max-width: 1200px; margin: 0 auto; padding: 1rem; }
.main-content { min-height: calc(100vh - 200px); }
.footer { background: #2c3e50; color: white; text-align: center; padding: 2rem; margin-top: 3rem; }
section { margin: 2rem 0; }
h1 { font-size: 1.8rem; margin-bottom: 1rem; color: #2c3e50; }
h2 { font-size: 1.5rem; margin-bottom: 1rem; color: #34495e; border-left: 4px solid #3498db; padding-left: 0.8rem; }
h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.intro-section { background: white; padding: 2rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; }
.video-card { background: white; padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); transition: transform 0.3s; }
.video-card:hover { transform: translateY(-4px); box-shadow: 0 4px 16px rgba(0,0,0,0.15); }
.video-card h3 a, .video-item h3 a { color: #2c3e50; text-decoration: none; }
.video-card h3 a:hover, .video-item h3 a:hover { color: #3498db; }
.meta { color: #7f8c8d; font-size: 0.9rem; margin: 0.5rem 0; }
.oneline { color: #555; font-size: 0.95rem; line-height: 1.6; }
.video-list { display: flex; flex-direction: column; gap: 1.5rem; }
.video-item { background: white; padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.video-item.ranked { display: flex; gap: 1rem; }
.video-item .rank { font-size: 2rem; font-weight: bold; color: #e74c3c; min-width: 3rem; text-align: center; }
.video-item.dated { display: flex; gap: 1rem; }
.video-item .date { font-size: 1rem; font-weight: bold; color: #3498db; min-width: 4rem; }
.entry-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; }
.entry-card { background: white; padding: 1.5rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); text-align: center; }
.entry-card h3 a { color: #2c3e50; text-decoration: none; font-size: 1.3rem; }
.entry-card h3 a:hover { color: #3498db; }
.topic-group { margin: 2rem 0; padding: 1.5rem; background: white; border-radius: 8px; }
.detail-page { background: white; padding: 2rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.detail-header h1 { font-size: 2rem; color: #2c3e50; margin-bottom: 1.5rem; }
.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 1rem; }
.info-item { padding: 0.5rem; background: #ecf0f1; border-radius: 4px; }
.detail-oneline, .detail-summary, .detail-review { margin: 2rem 0; line-height: 1.8; }
@media (max-width: 768px) {
  .video-grid { grid-template-columns: 1fr; }
  .entry-grid { grid-template-columns: 1fr; }
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.3rem; }
}