/* 全局样式 */
body { min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; }
a { transition: color 0.3s ease; }

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

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

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

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

.card h3 a {
  color: #333;
  text-decoration: none;
}

.card h3 a:hover {
  color: #e74c3c;
}

.card .meta {
  font-size: 13px;
  color: #999;
  margin-bottom: 8px;
}

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

/* 列表项 */
.list-item {
  background: #fff;
  padding: 25px;
  border-radius: 8px;
  margin-bottom: 15px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  position: relative;
}

.list-item .rank {
  position: absolute;
  top: 20px;
  right: 20px;
  background: #e74c3c;
  color: #fff;
  padding: 5px 12px;
  border-radius: 20px;
  font-weight: bold;
  font-size: 14px;
}

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

.list-item h3 a {
  color: #333;
  text-decoration: none;
}

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

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

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

/* 相关推荐 */
.related-item {
  background: #f9f9f9;
  padding: 15px;
  border-radius: 5px;
  border-left: 3px solid #3498db;
}

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

.related-item h4 a {
  color: #333;
  text-decoration: none;
}

.related-item h4 a:hover {
  color: #3498db;
}

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

/* 链接卡片 */
.link-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 40px 20px;
  border-radius: 8px;
  text-align: center;
  transition: transform 0.3s ease;
}

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

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

/* UI风格变体 */
.ui-style-0 { --primary: #333; --accent: #e74c3c; }
.ui-style-1 { --primary: #2c3e50; --accent: #9b59b6; }
.ui-style-2 { --primary: #8b4513; --accent: #d2691e; }
.ui-style-3 { --primary: #1a1a1a; --accent: #ff0080; }
.ui-style-4 { --primary: #2ecc71; --accent: #27ae60; }
.ui-style-5 { --primary: #34495e; --accent: #95a5a6; }
.ui-style-6 { --primary: #c79a2e; --accent: #d4af37; }
.ui-style-7 { --primary: #666; --accent: #999; }
.ui-style-8 { --primary: #ff6b6b; --accent: #ee5a6f; }
.ui-style-9 { --primary: #2c3e50; --accent: #3498db; }
.ui-style-10 { --primary: #e67e22; --accent: #f39c12; }
.ui-style-11 { --primary: #1abc9c; --accent: #16a085; }
.ui-style-12 { --primary: #27ae60; --accent: #229954; }
.ui-style-13 { --primary: #e91e63; --accent: #c2185b; }
.ui-style-14 { --primary: #3498db; --accent: #2980b9; }
.ui-style-15 { --primary: #e74c3c; --accent: #c0392b; }

/* 响应式 */
@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .list-item .rank {
    position: static;
    display: inline-block;
    margin-bottom: 10px;
  }
}