/* ===== 独享CSS - 知识库页面 ===== */
        .page-header {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            padding: 150px 0 80px;
            text-align: center;
            margin-top: 80px;
        }

        .page-header h1 {
            font-size: 3rem;
            margin-bottom: 20px;
        }

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

        .knowledge-section {
            background: white;
        }

        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .article-card {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
            transform: translateY(20px);
            opacity: 0;
            background: white;
        }

        .article-card.animated {
            transform: translateY(0);
            opacity: 1;
        }

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

        .article-image {
            height: 200px;
            overflow: hidden;
        }

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

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

        .article-content {
            padding: 25px;
        }

        .article-content h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
        }

        .article-content h3 a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
            /* 确保没有下划线 */
            text-decoration: none !important;
            border-bottom: none !important;
        }

        .article-content h3 a:hover {
            color: var(--secondary-color);
            text-decoration: none;
        }

        .article-content p {
            margin-bottom: 15px;
            color: #666;
        }

        .article-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.9rem;
            color: #777;
            margin-top: 15px;
        }

        .article-category {
            display: inline-block;
            background: var(--accent-color);
            color: white;
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 0.8rem;
            margin-bottom: 10px;
        }

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

        .page-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            margin: 0 5px;
            border-radius: 4px;
            background: white;
            color: var(--dark-color);
            text-decoration: none;
            transition: var(--transition);
            border: 1px solid #e0e0e0;
            font-weight: 500;
        }

        .page-num:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

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

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

        .categories-section {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
            padding: 60px 0;
        }

        .categories-container {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 40px;
        }

        .category-btn {
            padding: 10px 25px;
            background: white;
            border: 1px solid #e0e0e0;
            border-radius: 30px;
            color: var(--dark-color);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 500;
        }

        .category-btn:hover, .category-btn.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        .search-box {
            max-width: 500px;
            margin: 0 auto 40px;
            position: relative;
        }

        .search-box input {
            width: 100%;
            padding: 12px 20px;
            border: 1px solid #e0e0e0;
            border-radius: 30px;
            font-size: 1rem;
            transition: var(--transition);
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 2px rgba(26, 58, 95, 0.1);
        }

        .search-box button {
            position: absolute;
            right: 5px;
            top: 5px;
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 50%;
            width: 35px;
            height: 35px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .search-box button:hover {
            background: var(--secondary-color);
        }

        @media (max-width: 768px) {
            .page-header h1 {
                font-size: 2.5rem;
            }
            
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
        }