/* 全局样式 */
 body {
     font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
     color: #333;
     background-color: #fff;
 }

 .main {
     margin-top: 8rem;
 }

 /* 标题区域 */
 .section-header {
     padding: 3rem 0 2rem;
     border-bottom: 1px solid #D6D6D6;
     margin-bottom: 3rem;
 }

 .section-subtitle {
     color: #ff2b0f;
     font-size: 0.9rem;
     margin-bottom: 0.5rem;
 }

 .section-title {
     font-size: 2.5rem;
     font-weight: 700;
     margin: 0;
 }

 /* 页面标题 */
 .blog-header .blog-tag {
     color: #ff3b20;
     font-size: 0.9rem;
     font-weight: 600;
     margin-bottom: 0.5rem;
 }

 .blog-header h1 {
     font-size: 2.5rem;
     font-weight: 700;
     margin-bottom: 0.75rem;
 }

 .blog-header .desc {
     color: #666;
     font-size: 1rem;
 }

 .desc {
     display: flex;
     align-items: center;
     color: #808080;
     font-size: 1.02rem;
 }

 /* 搜索框 */
 .search-box {
     position: relative;
     display: flex;
     align-items: center;
 }

 .search-box .form-control {
     padding-left: 2.5rem;
     border-radius: 2rem;
     border: 1px solid #e0e0e0;
     height: 45px;
     color: #616161;
     font-size: 0.8rem;
 }

 .form-control:focus {
     box-shadow: 0 0 0 .02rem rgba(13, 110, 253, .25);
 }

 .search-box .search-icon {
     position: absolute;
     left: 1.3rem;
     top: 50%;
     transform: translateY(-50%);
     color: #666;
     width: 1.2rem;
 }

 /* 分类标签 */
 .category-tabs .btn {
     border-radius: 2rem;
     padding: 0.5rem 1.75rem;
     margin: 0.3rem;
     font-size: 0.95rem;
     border: none;
 }

 .category-tabs .btn.active {
     background-color: #ff3b20;
     color: white;
 }

 .category-tabs .btn:not(.active) {
     color: #000;
 }

 /* 部落格卡片 */
 .blog-card {
     border: 1px solid #e0e0e0;
     border-radius: 0.75rem;
     overflow: hidden;
     transition: all 0.3s ease;
     margin-bottom: 1.5rem;
 }

 .blog-card:hover {
     box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
     transform: translateY(-3px);
 }

 .blog-card .card-img {
     width: 100%;
     height: 200px;
     object-fit: cover;
 }

 .blog-card .card-tag {
     background-color: #ff3b20;
     color: white;
     font-size: 0.8rem;
     padding: 0.25rem 0.75rem;
     border-radius: 0.55rem;
     display: inline-block;
     margin: 1rem 1rem 0.75rem;
 }

 .blog-card .card-title {
     font-size: 1.25rem;
     font-weight: 600;
     margin: 0 1rem 1rem;
     line-height: 1.4;
     color: #0D0D0D;
 }

 .blog-card .card-meta {
     font-size: 0.85rem;
     color: #808080;
     margin: 0 1rem 1.5rem;
     display: flex;
     gap: 1rem;
     align-items: center;
 }

 .card-meta img {
     width: 0.9rem;
 }

 .line {
     width: 100%;
     border-bottom: 1px solid #D6D6D6;
     margin: 2rem auto;
 }

 /* 侧边栏 (仅PC端显示) */
 .sidebar {
     display: none;
 }

 @media (min-width: 992px) {
     .sidebar {
         display: block;
     }
       .desc {
         margin: 1rem auto;
         text-align: center;
     }

     .sidebar .btn {
         width: 100%;
         border-radius: 2rem;
         margin-bottom: 0.75rem;
         padding: 0.4rem;
         border: none;
         font-size: 0.8rem;
     }

     .sidebar .btn.active {
         background-color: #ff3b20;
         color: white;
     }

     .sidebar .btn:not(.active) {
         color: #000;
     }

 }

 /* 响应式适配 */
 @media (max-width: 768px) {
     .blog-header h1 {
         font-size: 2rem;
     }

     .blog-card .card-img {
         height: 180px;
     }

     .section-header {
         display: flex;
         flex-direction: column;
         align-items: center;
         justify-content: center;
         border: none;
         margin: 0;
     }

     .desc {
         margin: 1rem auto;
         text-align: center;
     }

     .section-header {
         padding: 0;
     }
 }