body.ui-style-7 {
  --primary-color: #2c5aa0;
  --bg-color: #f5f5f5;
  --card-bg: #fff;
  --text-color: #333;
  --border-color: #ddd;
}

.page-header {
  background: var(--card-bg);
  padding: 40px 20px;
  margin: 20px 0;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.page-header h1 {
  font-size: 28px;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.page-header p {
  color: #666;
  font-size: 16px;
}

.intro-section {
  background: var(--card-bg);
  padding: 30px;
  margin: 20px 0;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  line-height: 1.8;
}

section {
  margin: 30px 0;
}

section h2 {
  font-size: 24px;
  margin-bottom: 20px;
  color: var(--primary-color);
  border-left: 4px solid var(--primary-color);
  padding-left: 12px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.video-card {
  background: var(--card-bg);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.video-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.video-card .meta {
  color: #666;
  font-size: 14px;
  margin-bottom: 8px;
}

.video-card .oneline {
  color: #555;
  font-size: 14px;
  line-height: 1.5;
}

.video-list .video-item {
  background: var(--card-bg);
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.video-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.video-item .meta {
  color: #666;
  font-size: 14px;
  margin-bottom: 8px;
}

.video-item .summary {
  color: #555;
  font-size: 14px;
  line-height: 1.6;
}

.more-link {
  margin-top: 20px;
  text-align: center;
  font-size: 16px;
}

.more-link a {
  margin: 0 10px;
}

.video-list-full .video-item-full {
  background: var(--card-bg);
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.video-item-full h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.video-item-full .tags {
  color: #888;
  font-size: 13px;
  margin-top: 5px;
}

.video-list-ranked .video-item-ranked {
  display: flex;
  align-items: flex-start;
  background: var(--card-bg);
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.video-item-ranked .rank {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  min-width: 50px;
  text-align: center;
}

.video-item-ranked .item-content {
  flex: 1;
}

.topic-group {
  margin-bottom: 40px;
}

.topic-group h2 {
  font-size: 22px;
  margin-bottom: 15px;
}

.video-list-topic .video-item-topic {
  background: var(--card-bg);
  padding: 15px;
  margin-bottom: 12px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.video-list-latest .video-item-latest {
  display: flex;
  align-items: flex-start;
  background: var(--card-bg);
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.video-item-latest .date-badge {
  background: var(--primary-color);
  color: #fff;
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 14px;
  margin-right: 15px;
  min-width: 60px;
  text-align: center;
}

.video-item-latest .item-content {
  flex: 1;
}

.video-detail {
  background: var(--card-bg);
  padding: 40px;
  margin: 20px 0;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.detail-header h1 {
  font-size: 32px;
  color: var(--primary-color);
  margin-bottom: 20px;
}

.detail-info .info-list {
  list-style: none;
  padding: 0;
}

.detail-info .info-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 16px;
}

.detail-oneline p, .detail-summary p, .detail-review p {
  font-size: 16px;
  line-height: 1.8;
  color: #555;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.related-item {
  background: #f9f9f9;
  padding: 15px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.related-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.site-footer {
  background: #333;
  color: #fff;
  text-align: center;
  padding: 30px 20px;
  margin-top: 50px;
}

@media (max-width: 768px) {
  .page-header h1 {
    font-size: 22px;
  }

  .video-grid {
    grid-template-columns: 1fr;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }

  .video-detail {
    padding: 20px;
  }

  .detail-header h1 {
    font-size: 24px;
  }
}