/* 独享CSS部分 - 知识库页面内容 */
        .page-header {
            padding: 150px 0 80px;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
            color: var(--light-color);
            text-align: center;
        }
        
        .page-title {
            font-size: 3rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
            transform: translateY(50px);
            opacity: 0;
            transition: transform 1s ease, opacity 1s ease;
        }
        
        .page-title.animate {
            transform: translateY(0);
            opacity: 1;
        }
        
        .page-subtitle {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto;
            color: rgba(255, 255, 255, 0.8);
            transform: translateY(30px);
            opacity: 0;
            transition: transform 1s ease 0.3s, opacity 1s ease 0.3s;
        }
        
        .page-subtitle.animate {
            transform: translateY(0);
            opacity: 1;
        }
        
        .knowledge-section {
            padding: 80px 0;
            background-color: var(--light-color);
        }
        
        .knowledge-categories {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 50px;
        }
        
        .category-btn {
            padding: 10px 20px;
            background-color: white;
            border: 2px solid var(--primary-color);
            border-radius: 30px;
            color: var(--primary-color);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .category-btn.active, .category-btn:hover {
            background-color: var(--primary-color);
            color: var(--light-color);
        }
        
        .knowledge-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
        }
        
        .knowledge-card {
            background-color: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            transform: translateY(50px);
            opacity: 0;
            animation: cardBounce 6s infinite ease-in-out;
            animation-delay: calc(var(--i) * 0.1s);
        }
        
        .knowledge-card.animate {
            transform: translateY(0);
            opacity: 1;
        }
        
        @keyframes cardBounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        
        .knowledge-card:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 40px 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-color: var(--secondary-color);
            color: white;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        
        .knowledge-content {
            padding: 25px;
        }
        
        .knowledge-content h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--primary-color);
            line-height: 1.4;
            /* 移除链接下划线 */
            text-decoration: none;
        }
        
        .knowledge-content h3 a {
            color: inherit;
            text-decoration: none; /* 确保链接没有下划线 */
            transition: var(--transition);
        }
        
        .knowledge-content h3 a:hover {
            color: var(--secondary-color);
        }
        
        .knowledge-meta {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
            font-size: 0.9rem;
            color: #777;
        }
        
        .knowledge-meta span {
            display: flex;
            align-items: center;
            margin-right: 15px;
        }
        
        .knowledge-meta i {
            margin-right: 5px;
            color: var(--secondary-color);
        }
        
        .knowledge-excerpt {
            color: #555;
            margin-bottom: 20px;
            line-height: 1.6;
        }
        
        .read-more {
            display: inline-flex;
            align-items: center;
            color: var(--accent-color);
            font-weight: 600;
            transition: var(--transition);
        }
        
        .read-more:hover {
            color: var(--secondary-color);
            transform: translateX(5px);
        }
        
        .read-more i {
            margin-left: 5px;
            transition: var(--transition);
        }
        
        .read-more:hover i {
            transform: translateX(3px);
        }
        
        /* 分页样式 */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 40px;
        }
        
        .page-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            margin: 0 5px;
            border-radius: 5px;
            background-color: white;
            color: var(--dark-color);
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
        }
        
        .page-num:hover {
            background-color: var(--primary-color);
            color: var(--light-color);
            transform: translateY(-3px);
        }
        
        .page-num-current {
            background-color: var(--primary-color);
            color: var(--light-color);
        }
        
        .page-num i {
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .knowledge-container {
                grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                background-color: var(--primary-color);
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                transition: var(--transition);
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 15px 0;
            }
            
            .mobile-toggle {
                display: block;
            }
            
            .page-title {
                font-size: 2.5rem;
            }
            
            .knowledge-categories {
                flex-direction: column;
                align-items: center;
            }
            
            .category-btn {
                width: 200px;
            }
        }
        
        @media (max-width: 576px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .friend-links-container {
                flex-direction: column;
                gap: 10px;
            }
            
            .knowledge-container {
                grid-template-columns: 1fr;
            }
            
            .pagination {
                flex-wrap: wrap;
            }
            
            .page-num {
                margin-bottom: 10px;
            }
        }