.page-title {
  font-size: 32px;
  margin-bottom: 20px;
  color: #d32f2f;
  text-align: center;
}

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

.hot-section, .topic-section, .latest-section, .all-link {
  margin-bottom: 40px;
}

.hot-section h2, .topic-section h2, .latest-section h2 {
  font-size: 24px;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #d32f2f;
}

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

.video-card {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  transition: transform 0.3s, box-shadow 0.3s;
}

.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: 10px;
}

.video-card .meta {
  font-size: 13px;
  color: #888;
  margin-bottom: 8px;
}

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

.more-link {
  text-align: right;
  margin-top: 15px;
}

.more-link a {
  font-size: 16px;
  font-weight: bold;
}

.all-link {
  text-align: center;
  padding: 30px;
  background: #fff;
  border-radius: 8px;
}

.all-link a {
  font-size: 20px;
  font-weight: bold;
  display: inline-block;
  padding: 12px 30px;
  background: #d32f2f;
  color: #fff;
  border-radius: 4px;
  transition: background 0.3s;
}

.all-link a:hover {
  background: #b71c1c;
  text-decoration: none;
}

/* 列表页样式 */
.video-list {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
}

.list-item {
  padding: 20px 0;
  border-bottom: 1px solid #eee;
}

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

.list-item h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.list-item .meta {
  font-size: 13px;
  color: #888;
  margin-bottom: 8px;
}

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

.list-item.ranked {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.rank-num {
  font-size: 28px;
  font-weight: bold;
  color: #d32f2f;
  min-width: 40px;
}

.item-content {
  flex: 1;
}

.list-item.dated .meta {
  color: #666;
}

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

.group-title {
  font-size: 22px;
  color: #d32f2f;
  margin-bottom: 15px;
  padding-left: 10px;
  border-left: 4px solid #d32f2f;
}

.group-items {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 15px;
}

.group-item {
  background: #f9f9f9;
  padding: 15px;
  border-radius: 4px;
}

.group-item h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.group-item p {
  font-size: 13px;
  color: #666;
}

/* 详情页样式 */
.detail-page {
  background: #fff;
  padding: 30px;
  border-radius: 8px;
}

.detail-title {
  font-size: 28px;
  margin-bottom: 30px;
  color: #333;
  text-align: center;
}

.detail-page section {
  margin-bottom: 30px;
}

.detail-page h2 {
  font-size: 22px;
  margin-bottom: 15px;
  padding-bottom: 8px;
  border-bottom: 2px solid #d32f2f;
}

.basic-info ul {
  list-style: none;
}

.basic-info li {
  padding: 8px 0;
  font-size: 15px;
}

.oneline {
  font-size: 18px;
  color: #d32f2f;
  font-style: italic;
  padding: 15px;
  background: #fff5f5;
  border-left: 4px solid #d32f2f;
}

.summary-section p, .review-section p {
  font-size: 15px;
  line-height: 1.8;
  text-indent: 2em;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 15px;
}

.related-item {
  background: #f9f9f9;
  padding: 15px;
  border-radius: 4px;
  transition: background 0.3s;
}

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

.related-item h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.related-item p {
  font-size: 13px;
  color: #666;
}

@media (max-width: 768px) {
  .page-title {
    font-size: 24px;
  }

  .video-grid, .group-items, .related-grid {
    grid-template-columns: 1fr;
  }

  .detail-page {
    padding: 20px;
  }

  .detail-title {
    font-size: 22px;
  }
}