/* UI Style 7 - 清新简约 */
body.ui-style-7 {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.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(0,0,0,0.1);
  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;
  font-size: 18px;
}

.video-card .meta {
  color: #666;
  font-size: 13px;
  margin-bottom: 8px;
}

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

.video-list .list-item {
  background: #fff;
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  position: relative;
}

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

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

.list-item .desc {
  color: #555;
  line-height: 1.6;
  margin-bottom: 8px;
}

.list-item .review {
  color: #f57c00;
  font-size: 14px;
  line-height: 1.6;
  font-style: italic;
}

.list-item .rank {
  display: inline-block;
  background: #ff5722;
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  margin-right: 10px;
  font-weight: bold;
}

.list-item .badge {
  display: inline-block;
  background: #43a047;
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  margin-right: 10px;
}

.list-item .date {
  display: inline-block;
  background: #1976d2;
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  margin-right: 10px;
}

.intro-section h1 {
  font-size: 28px;
  margin: 30px 0 20px;
  text-align: center;
}

@media (max-width: 768px) {
  .video-grid {
    grid-template-columns: 1fr;
  }

  .intro-section h1 {
    font-size: 22px;
  }

  .list-item h3 {
    font-size: 18px;
  }
}