/* 全局样式 */
.ui-style-3 {
  font-size: 16px;
}

main {
  min-height: calc(100vh - 200px);
  padding: 30px 15px;
}

/* 页眉样式已在内联CSS中 */

/* 首页样式 */
.hero {
  background: white;
  padding: 40px 30px;
  border-radius: 8px;
  margin-bottom: 30px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  text-align: center;
}

.hero h1 {
  font-size: 28px;
  color: #2c3e50;
  margin-bottom: 20px;
  line-height: 1.4;
}

.hero .intro {
  font-size: 16px;
  color: #555;
  line-height: 1.8;
  max-width: 900px;
  margin: 0 auto;
}

section {
  background: white;
  padding: 30px;
  border-radius: 8px;
  margin-bottom: 30px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

section h2 {
  font-size: 24px;
  color: #2c3e50;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 3px solid #3498db;
}

/* 视频网格 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.video-card {
  padding: 20px;
  background: #f8f9fa;
  border-radius: 6px;
  transition: transform 0.3s, box-shadow 0.3s;
  border-left: 4px solid #3498db;
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px 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: #3498db;
}

.video-card .meta {
  color: #7f8c8d;
  font-size: 13px;
  margin-bottom: 10px;
}

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

/* 视频列表 */
.video-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.video-item {
  padding: 20px;
  background: #f8f9fa;
  border-radius: 6px;
  border-left: 4px solid #27ae60;
  transition: background 0.3s;
}

.video-item:hover {
  background: #e9ecef;
}

.video-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

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

.video-item h3 a:hover {
  color: #27ae60;
}

.video-item .meta {
  color: #7f8c8d;
  font-size: 13px;
  margin-bottom: 8px;
}

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

/* 链接卡片 */
.link-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.link-card {
  padding: 25px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 8px;
  color: white;
  text-align: center;
  transition: transform 0.3s;
}

.link-card:hover {
  transform: scale(1.05);
}

.link-card h3 a {
  color: white;
  text-decoration: none;
  font-size: 20px;
  font-weight: bold;
}

.link-card p {
  margin-top: 10px;
  opacity: 0.9;
  font-size: 14px;
}

/* 列表页样式 */
.page-header {
  text-align: center;
  margin-bottom: 30px;
}

.page-header h1 {
  font-size: 28px;
  color: #2c3e50;
  margin-bottom: 15px;
}

.page-header .intro {
  color: #555;
  font-size: 15px;
  line-height: 1.8;
}

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

.video-item-full {
  padding: 25px;
  background: #f8f9fa;
  border-radius: 8px;
  border-left: 5px solid #e74c3c;
  position: relative;
}

.video-item-full .index,
.video-item-full .rank,
.video-item-full .tag,
.video-item-full .year {
  position: absolute;
  top: 15px;
  right: 15px;
  background: #e74c3c;
  color: white;
  padding: 5px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: bold;
}

.video-item-full .rank {
  background: #f39c12;
}

.video-item-full .tag {
  background: #9b59b6;
}

.video-item-full .year {
  background: #16a085;
}

.video-item-full h3 {
  font-size: 20px;
  margin-bottom: 10px;
  padding-right: 100px;
}

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

.video-item-full h3 a:hover {
  color: #e74c3c;
}

.video-item-full .meta {
  color: #7f8c8d;
  font-size: 14px;
  margin-bottom: 10px;
}

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

.video-item-full .review {
  color: #666;
  font-size: 14px;
  line-height: 1.6;
  font-style: italic;
  border-left: 3px solid #95a5a6;
  padding-left: 15px;
  margin-top: 15px;
}

/* 详情页样式 */
.video-detail {
  max-width: 900px;
  margin: 0 auto;
}

.detail-header {
  text-align: center;
  margin-bottom: 30px;
}

.detail-header h1 {
  font-size: 30px;
  color: #2c3e50;
  line-height: 1.4;
}

.detail-info dl {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 15px 20px;
  line-height: 1.6;
}

.detail-info dt {
  font-weight: bold;
  color: #34495e;
}

.detail-info dd {
  color: #555;
}

.detail-oneline p,
.detail-summary p,
.detail-review p {
  color: #555;
  font-size: 16px;
  line-height: 1.8;
}

.detail-review {
  background: #ecf0f1;
  border-left: 5px solid #3498db;
}

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

.related-item {
  padding: 15px;
  background: #f8f9fa;
  border-radius: 6px;
  border: 1px solid #dee2e6;
}

.related-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

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

.related-item h3 a:hover {
  color: #3498db;
}

.related-item .meta {
  color: #7f8c8d;
  font-size: 12px;
  margin-bottom: 6px;
}

.related-item .oneline {
  color: #666;
  font-size: 13px;
  line-height: 1.5;
}

/* 页脚 */
footer {
  background: #2c3e50;
  color: white;
  text-align: center;
  padding: 20px 15px;
  margin-top: 40px;
}

footer p {
  margin: 0;
  font-size: 14px;
}

/* 响应式 */
@media (max-width: 768px) {
  .hero h1 { font-size: 22px; }
  .hero .intro { font-size: 14px; }
  section { padding: 20px 15px; }
  section h2 { font-size: 20px; }
  .video-grid { grid-template-columns: 1fr; }
  .link-cards { grid-template-columns: 1fr; }
  .detail-info dl { grid-template-columns: 100px 1fr; gap: 10px 15px; }
  .related-list { grid-template-columns: 1fr; }
  .video-item-full h3 { padding-right: 0; margin-bottom: 30px; }
  .video-item-full .index,
  .video-item-full .rank,
  .video-item-full .tag,
  .video-item-full .year { top: auto; bottom: 15px; }
}