/* 独享CSS - 知识库页面 */
        
        /* 页面标题区域 */
        .page-header {
            background: linear-gradient(135deg, var(--primary-color), #152642);
            color: white;
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        
        .page-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary-color), #ffd700);
        }
        
        .page-header h1 {
            font-size: 42px;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .page-header h1::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: linear-gradient(90deg, var(--secondary-color), #ffd700);
            box-shadow: 0 0 8px var(--secondary-color);
        }
        
        .page-header p {
            font-size: 18px;
            max-width: 700px;
            margin: 0 auto;
            color: rgba(255,255,255,0.8);
        }
        
        /* 面包屑导航 */
        .breadcrumb {
            background: rgba(255,255,255,0.1);
            padding: 15px 0;
            margin-bottom: 40px;
        }
        
        .breadcrumb .container {
            display: flex;
            align-items: center;
        }
        
        .breadcrumb a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .breadcrumb a:hover {
            color: var(--secondary-color);
        }
        
        .breadcrumb span {
            margin: 0 10px;
            color: rgba(255,255,255,0.5);
        }
        
        .breadcrumb .current {
            color: var(--secondary-color);
        }
        
        /* 知识库内容区域 */
        .knowledge-content {
            padding: 60px 0;
        }
        
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }
        
        .knowledge-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.08);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(30px);
            position: relative;
        }
        
        .knowledge-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary-color), #ffd700);
        }
        
        .knowledge-card.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        .knowledge-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.15);
        }
        
        .knowledge-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        
        .knowledge-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 40%;
            background: linear-gradient(transparent, rgba(0,0,0,0.5));
        }
        
        .knowledge-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .knowledge-card:hover .knowledge-image img {
            transform: scale(1.1);
        }
        
        .knowledge-content-wrapper {
            padding: 25px;
        }
        
        .knowledge-category {
            display: inline-block;
            background: rgba(212, 175, 55, 0.1);
            color: var(--secondary-color);
            padding: 5px 12px;
            border-radius: 4px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 15px;
        }
        
        .knowledge-title {
            margin-bottom: 12px;
        }
        
        .knowledge-title h3 {
            font-size: 20px;
            line-height: 1.4;
        }
        
        .knowledge-title h3 a {
            color: var(--primary-color);
            text-decoration: none; /* 去掉链接下划线 */
            transition: var(--transition);
            position: relative;
        }
        
        .knowledge-title h3 a:hover {
            color: var(--secondary-color);
        }
        
        .knowledge-title h3 a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary-color), #ffd700);
            transition: var(--transition);
        }
        
        .knowledge-title h3 a:hover::after {
            width: 100%;
        }
        
        .knowledge-meta {
            display: flex;
            justify-content: space-between;
            color: #718096;
            font-size: 14px;
            margin-bottom: 15px;
        }
        
        .knowledge-excerpt {
            color: #4a5568;
            margin-bottom: 20px;
            line-height: 1.6;
        }
        
        .read-more {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            transition: var(--transition);
        }
        
        .read-more i {
            margin-left: 5px;
            transition: var(--transition);
        }
        
        .read-more:hover {
            color: var(--primary-color);
        }
        
        .read-more:hover i {
            transform: translateX(5px);
        }
        
        /* 分页样式 */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 50px;
            gap: 10px;
        }
        
        .page-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: white;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .page-num:hover {
            background: var(--secondary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(212, 175, 55, 0.3);
        }
        
        .page-num-current {
            background: var(--secondary-color);
            color: white;
            box-shadow: 0 5px 15px rgba(212, 175, 55, 0.3);
        }
        
        .page-num i {
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .knowledge-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            .page-header h1 {
                font-size: 32px;
            }
            
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
            
            .pagination {
                flex-wrap: wrap;
            }
        }
        
        @media (max-width: 576px) {
            .knowledge-content-wrapper {
                padding: 20px;
            }
            
            .knowledge-meta {
                flex-direction: column;
                gap: 5px;
            }
        }