/* ===== 独享CSS - 知识库页面 ===== */
        
        /* 页面标题区域 */
        .page-header {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('/template/jia/images/10.jpg') center/cover no-repeat;
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: #fff;
            margin-top: 80px;
        }

        .page-header-content h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
        }

        .page-header-content p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 知识库内容区域 */
        .knowledge-section {
            background: var(--light-color);
            position: relative;
        }

        .knowledge-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/template/jia/images/9.jpg') center/cover no-repeat;
            opacity: 0.05;
            z-index: 0;
        }

        .knowledge-container {
            position: relative;
            z-index: 1;
        }

        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
        }

        .knowledge-card {
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(30px);
        }

        .knowledge-card.animate {
            opacity: 1;
            transform: translateY(0);
        }

        .knowledge-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

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

        .knowledge-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

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

        .knowledge-category {
            position: absolute;
            top: 15px;
            left: 15px;
            background: var(--secondary-color);
            color: #fff;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .knowledge-content {
            padding: 25px;
        }

        .knowledge-content h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--primary-color);
            line-height: 1.4;
        }

        .knowledge-content h3 a {
            text-decoration: none; /* 确保没有下划线 */
            transition: var(--transition);
        }

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

        .knowledge-meta {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
            color: var(--text-light);
            font-size: 0.9rem;
        }

        .knowledge-meta span {
            display: flex;
            align-items: center;
            margin-right: 15px;
        }

        .knowledge-meta i {
            margin-right: 5px;
            color: var(--secondary-color);
        }

        .knowledge-content p {
            color: var(--text-light);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .read-more {
            color: var(--secondary-color);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            transition: var(--transition);
        }

        .read-more i {
            margin-left: 5px;
            transition: var(--transition);
        }

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

        /* 分页样式 */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 50px;
        }

        .page-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 45px;
            height: 45px;
            margin: 0 5px;
            border-radius: 4px;
            background: #fff;
            color: var(--text-color);
            font-weight: 600;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .page-num:hover {
            background: var(--primary-color);
            color: #fff;
        }

        .page-num-current {
            background: var(--secondary-color);
            color: #fff;
        }

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

        /* 响应式设计 */
        @media (max-width: 992px) {
            .knowledge-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background: #fff;
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 50px;
                transition: var(--transition);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 15px 0;
            }
            
            .hamburger {
                display: block;
            }
            
            .contact-info {
                display: none;
            }
            
            .page-header-content h1 {
                font-size: 2.5rem;
            }
            
            .section-title h2 {
                font-size: 2.2rem;
            }
            
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .friend-links ul {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 576px) {
            .page-header-content h1 {
                font-size: 2rem;
            }
            
            .section {
                padding: 80px 0;
            }
            
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .pagination {
                flex-wrap: wrap;
            }
            
            .page-num {
                margin-bottom: 10px;
            }
        }