body.ui-style-7 {
  background: linear-gradient(to bottom, #f8f9fa 0%, #e9ecef 100%);
}

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

.hero {
  background: white;
  padding: 50px 30px;
  border-radius: 12px;
  text-align: center;
  margin: 30px 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.hero h1 {
  font-size: 32px;
  color: #2c3e50;
  margin-bottom: 20px;
  font-weight: 700;
}

.hero-desc {
  font-size: 16px;
  color: #666;
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto;
}

.intro-section {
  background: white;
  padding: 40px;
  border-radius: 12px;
  margin: 30px 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.intro-section h2 {
  font-size: 24px;
  color: #2c3e50;
  margin-bottom: 20px;
  border-left: 4px solid #667eea;
  padding-left: 15px;
}

.intro-section p {
  font-size: 15px;
  color: #555;
  line-height: 1.9;
  text-align: justify;
}

.content-section {
  background: white;
  padding: 40px;
  border-radius: 12px;
  margin: 30px 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 25px;
  padding-bottom: 15px;
  border-bottom: 2px solid #f0f0f0;
}

.section-header h2 {
  font-size: 24px;
  color: #2c3e50;
  font-weight: 700;
}

.section-desc {
  font-size: 14px;
  color: #777;
  margin-top: 10px;
}

.section-desc a {
  color: #667eea;
  text-decoration: none;
}

.section-desc a:hover {
  text-decoration: underline;
}

.more-link {
  color: #667eea;
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s;
}

.more-link:hover {
  color: #764ba2;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
}

.video-card {
  background: #fafafa;
  padding: 20px;
  border-radius: 8px;
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid #eee;
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

.video-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.video-card h3 a {
  color: #2c3e50;
  text-decoration: none;
}

.video-card h3 a:hover {
  color: #667eea;
}

.video-card .meta {
  font-size: 13px;
  color: #999;
  margin-bottom: 10px;
}

.video-card .oneline {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

.video-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.list-item {
  display: flex;
  align-items: flex-start;
  background: #fafafa;
  padding: 15px;
  border-radius: 8px;
  border: 1px solid #eee;
  transition: background 0.3s;
}

.list-item:hover {
  background: #f0f0f0;
}

.list-item .rank {
  font-size: 24px;
  font-weight: bold;
  color: #667eea;
  min-width: 40px;
  margin-right: 15px;
}

.list-content {
  flex: 1;
}

.list-content h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.list-content h4 a {
  color: #2c3e50;
  text-decoration: none;
}

.list-content h4 a:hover {
  color: #667eea;
}

.list-content p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

.video-grid-small {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}

.video-card-small {
  background: #fafafa;
  padding: 15px;
  border-radius: 8px;
  border: 1px solid #eee;
  transition: background 0.3s;
}

.video-card-small:hover {
  background: #f0f0f0;
}

.video-card-small h4 {
  font-size: 15px;
  margin-bottom: 8px;
}

.video-card-small h4 a {
  color: #2c3e50;
  text-decoration: none;
}

.video-card-small h4 a:hover {
  color: #667eea;
}

.video-card-small .year {
  font-size: 13px;
  color: #999;
}

.page-header {
  background: white;
  padding: 40px;
  border-radius: 12px;
  margin: 30px 0;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.page-header h1 {
  font-size: 32px;
  color: #2c3e50;
  margin-bottom: 15px;
}

.page-header p {
  font-size: 16px;
  color: #666;
  line-height: 1.8;
}

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

.list-item-full {
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  position: relative;
  transition: box-shadow 0.3s;
}

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

.list-item-full h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.list-item-full h3 a {
  color: #2c3e50;
  text-decoration: none;
}

.list-item-full h3 a:hover {
  color: #667eea;
}

.list-item-full .meta {
  font-size: 14px;
  color: #999;
  margin-bottom: 12px;
}

.list-item-full .summary {
  font-size: 15px;
  color: #555;
  line-height: 1.7;
  margin-bottom: 10px;
}

.list-item-full .review {
  font-size: 14px;
  color: #777;
  line-height: 1.6;
  font-style: italic;
  padding-left: 15px;
  border-left: 3px solid #667eea;
}

.rank-badge,
.date-badge,
.topic-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: bold;
  margin-bottom: 10px;
}

.rank-badge {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.date-badge {
  background: #e3f2fd;
  color: #1976d2;
}

.topic-badge {
  background: #f3e5f5;
  color: #7b1fa2;
}

.video-detail {
  background: white;
  padding: 40px;
  border-radius: 12px;
  margin: 30px 0;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.detail-header {
  text-align: center;
  padding-bottom: 30px;
  border-bottom: 2px solid #f0f0f0;
  margin-bottom: 30px;
}

.detail-header h1 {
  font-size: 36px;
  color: #2c3e50;
  margin-bottom: 15px;
  font-weight: 700;
}

.detail-header .tagline {
  font-size: 18px;
  color: #667eea;
  font-weight: 500;
}

.detail-info,
.detail-summary,
.detail-review,
.detail-related {
  margin-bottom: 40px;
}

.detail-info h2,
.detail-summary h2,
.detail-review h2,
.detail-related h2 {
  font-size: 24px;
  color: #2c3e50;
  margin-bottom: 20px;
  border-left: 4px solid #667eea;
  padding-left: 15px;
}

.info-list {
  list-style: none;
  background: #fafafa;
  padding: 20px;
  border-radius: 8px;
}

.info-list li {
  padding: 10px 0;
  border-bottom: 1px solid #eee;
  font-size: 15px;
  color: #555;
}

.info-list li:last-child {
  border-bottom: none;
}

.info-list strong {
  color: #2c3e50;
  font-weight: 600;
}

.detail-summary p,
.detail-review p {
  font-size: 16px;
  color: #555;
  line-height: 1.9;
  text-align: justify;
}

.detail-review p {
  background: #f9f9f9;
  padding: 20px;
  border-radius: 8px;
  border-left: 4px solid #667eea;
  font-style: italic;
}

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

.related-card {
  background: #fafafa;
  padding: 20px;
  border-radius: 8px;
  border: 1px solid #eee;
  transition: transform 0.3s, box-shadow 0.3s;
}

.related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.related-card h4 {
  font-size: 16px;
  margin-bottom: 10px;
}

.related-card h4 a {
  color: #2c3e50;
  text-decoration: none;
}

.related-card h4 a:hover {
  color: #667eea;
}

.related-card p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

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

  .hero {
    padding: 30px 20px;
  }

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

  .hero-desc {
    font-size: 14px;
  }

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

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .video-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .video-grid-small {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .video-detail {
    padding: 25px 20px;
  }

  .detail-header h1 {
    font-size: 26px;
  }

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