.ui-style-5 {
  --primary-color: #667eea;
  --secondary-color: #764ba2;
  --layout-variant: E;
}

body {
  font-size: 16px;
}

.card {
  transition: box-shadow 0.3s ease;
}

.card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

.video-item {
  cursor: pointer;
}

.video-item h3 a {
  color: #333;
  transition: color 0.3s;
}

.video-item h3 a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

.video-list li {
  transition: background 0.3s;
}

.video-list li:hover {
  background: #fafafa;
}

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

  .card {
    padding: 1rem;
    margin-bottom: 1rem;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }

  .site-nav a {
    font-size: 0.75rem;
    padding: 0.3rem 0.2rem;
  }
}