/* ===== 知识库页面独享CSS部分 ===== */
        
        /* 知识库页面标题区域 */
        .knowledge-header {
            background: var(--gradient-primary);
            color: white;
            padding: 180px 0 120px;
            margin-top: 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .knowledge-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0.1;
            background: 
                radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(255, 122, 69, 0.2) 0%, transparent 50%);
        }

        .knowledge-header h1 {
            color: white;
            font-size: 3.5rem;
            margin-bottom: 1rem;
        }

        .knowledge-header p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2rem;
        }

        /* 知识库文章列表 */
        .knowledge-articles {
            padding: 80px 0;
            background-color: var(--light);
        }

        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
        }

        .article-card {
            background: white;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-15px);
            box-shadow: var(--shadow-lg);
        }

        .article-image {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

        .article-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.8s ease;
        }

        .article-card:hover .article-image img {
            transform: scale(1.1);
        }

        .article-category {
            position: absolute;
            top: 20px;
            left: 20px;
            background: var(--gradient-secondary);
            color: white;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            z-index: 2;
        }

        .article-content {
            padding: 30px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        /* H3标题链接样式 - 去除下划线 */
        .article-content h3 a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
            display: inline-block;
            position: relative;
        }

        .article-content h3 a:hover {
            color: var(--secondary);
        }

        /* 去除H3链接的下划线效果 */
        .article-content h3 a::after {
            display: none;
        }

        .article-excerpt {
            color: var(--gray);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid rgba(45, 50, 80, 0.1);
        }

        .article-date {
            color: var(--gray);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
        }

        .article-date i {
            margin-right: 8px;
            color: var(--secondary);
        }

        .read-more {
            color: var(--secondary);
            font-weight: 600;
            text-decoration: none;
            font-size: 0.95rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
        }

        .read-more i {
            margin-left: 8px;
            transition: transform 0.3s ease;
        }

        .read-more:hover {
            color: var(--primary);
        }

        .read-more:hover i {
            transform: translateX(5px);
        }

        /* 分页样式 */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 60px;
            gap: 8px;
        }

        .page-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: white;
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: var(--shadow);
            border: 2px solid transparent;
        }

        .page-num:hover {
            background: var(--gradient-primary);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(45, 50, 80, 0.15);
        }

        .page-num-current {
            background: var(--gradient-secondary);
            color: white;
            border-color: var(--secondary);
        }

        .page-num i {
            font-size: 0.9rem;
        }

        /* 知识库分类 */
        .knowledge-categories {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 50px;
        }

        .category-btn {
            padding: 12px 28px;
            background: white;
            border-radius: 50px;
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: var(--shadow);
            border: 2px solid transparent;
        }

        .category-btn:hover,
        .category-btn.active {
            background: var(--gradient-primary);
            color: white;
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        /* 响应式设计 - 知识库独享部分 */
        @media (max-width: 1100px) {
            .knowledge-header h1 {
                font-size: 3rem;
            }
            
            .article-list {
                grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .knowledge-header {
                padding: 150px 0 90px;
            }
            
            .knowledge-header h1 {
                font-size: 2.5rem;
            }
            
            .article-list {
                grid-template-columns: 1fr;
            }
            
            .knowledge-categories {
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 10px;
            }
        }

        @media (max-width: 576px) {
            .knowledge-header h1 {
                font-size: 2.2rem;
            }
            
            .knowledge-header {
                padding: 130px 0 70px;
            }
        }