.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

.hero {
  text-align: center;
  padding: 60px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 12px;
  margin-bottom: 40px;
}

.hero h1 {
  font-size: 32px;
  margin-bottom: 20px;
  line-height: 1.4;
}

.hero-desc {
  font-size: 18px;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

.intro-section {
  background: #fff;
  padding: 40px;
  border-radius: 8px;
  margin-bottom: 40px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.intro-section h2 {
  font-size: 24px;
  margin-bottom: 20px;
  color: #1a73e8;
}

.intro-section p {
  font-size: 16px;
  line-height: 1.8;
  color: #555;
}

.video-section {
  margin-bottom: 60px;
}

.video-section h2 {
  font-size: 28px;
  margin-bottom: 30px;
  color: #333;
  padding-bottom: 10px;
  border-bottom: 3px solid #1a73e8;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.video-card {
  background: #fff;
  padding: 24px;
  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(-4px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.video-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.video-card h3 a {
  color: #333;
}

.video-card h3 a:hover {
  color: #1a73e8;
}

.video-meta {
  color: #888;
  font-size: 14px;
  margin-bottom: 8px;
}

.video-oneline {
  color: #555;
  font-size: 15px;
  line-height: 1.6;
}

.video-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.video-item {
  background: #fff;
  padding: 24px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  position: relative;
}

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

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

.video-item h3 a:hover {
  color: #1a73e8;
}

.video-summary {
  color: #666;
  font-size: 15px;
  line-height: 1.7;
  margin-top: 10px;
}

.video-review {
  color: #888;
  font-size: 14px;
  font-style: italic;
  margin-top: 10px;
  padding: 10px;
  background: #f9f9f9;
  border-left: 3px solid #1a73e8;
}

.rank {
  display: inline-block;
  background: #1a73e8;
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: bold;
  margin-right: 10px;
}

.date {
  display: inline-block;
  background: #f0f0f0;
  color: #666;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 13px;
  margin-right: 10px;
}

.page-header {
  text-align: center;
  margin-bottom: 50px;
}

.page-header h1 {
  font-size: 36px;
  margin-bottom: 20px;
  color: #333;
}

.page-desc {
  font-size: 18px;
  color: #666;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

.video-group {
  margin-bottom: 50px;
}

.group-title {
  font-size: 26px;
  color: #1a73e8;
  margin-bottom: 25px;
  padding-bottom: 10px;
  border-bottom: 2px solid #e0e0e0;
}

.video-detail {
  background: #fff;
  padding: 50px;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.1);
}

.video-detail h1 {
  font-size: 32px;
  margin-bottom: 30px;
  color: #333;
  line-height: 1.4;
}

.video-info {
  background: #f8f9fa;
  padding: 30px;
  border-radius: 8px;
  margin-bottom: 40px;
}

.info-row {
  font-size: 16px;
  margin-bottom: 12px;
  line-height: 1.6;
}

.label {
  font-weight: bold;
  color: #555;
  display: inline-block;
  min-width: 80px;
}

.content-section {
  margin-bottom: 40px;
}

.content-section h2 {
  font-size: 24px;
  margin-bottom: 20px;
  color: #1a73e8;
  padding-bottom: 8px;
  border-bottom: 2px solid #e0e0e0;
}

.content-section p {
  font-size: 16px;
  line-height: 1.9;
  color: #555;
}

.highlight {
  font-size: 18px;
  font-weight: 500;
  color: #333;
  background: #fff9e6;
  padding: 20px;
  border-left: 4px solid #ffc107;
  border-radius: 4px;
}

.review {
  font-style: italic;
  color: #666;
  background: #f5f5f5;
  padding: 20px;
  border-left: 4px solid #1a73e8;
  border-radius: 4px;
}

.related-section {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 2px solid #e0e0e0;
}

.related-section h2 {
  font-size: 26px;
  margin-bottom: 30px;
  color: #333;
}

@media (max-width: 768px) {
  .container {
    padding: 20px 15px;
  }

  .hero {
    padding: 40px 20px;
  }

  .hero h1 {
    font-size: 24px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .intro-section {
    padding: 25px 20px;
  }

  .video-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .video-detail {
    padding: 30px 20px;
  }

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

  .page-header h1 {
    font-size: 28px;
  }
}

.ui-style-0 { --primary: #1a73e8; }
.ui-style-1 { --primary: #0d47a1; }
.ui-style-2 { --primary: #2196f3; }
.ui-style-3 { --primary: #1976d2; }
.ui-style-4 { --primary: #1565c0; }
.ui-style-5 { --primary: #0277bd; }
.ui-style-6 { --primary: #01579b; }
.ui-style-7 { --primary: #1e88e5; }
.ui-style-8 { --primary: #1565c0; }
.ui-style-9 { --primary: #0d47a1; }
.ui-style-10 { --primary: #42a5f5; }
.ui-style-11 { --primary: #1976d2; }
.ui-style-12 { --primary: #1e88e5; }
.ui-style-13 { --primary: #2196f3; }
.ui-style-14 { --primary: #0277bd; }
.ui-style-15 { --primary: #01579b; }