/* 知识库页面样式 */
        .knowledge-hero {
            background: var(--gradient);
            color: var(--white);
            padding: 180px 0 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .knowledge-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
            background-size: cover;
        }
        
        .knowledge-hero h1 {
            font-size: 4rem;
            margin-bottom: 25px;
            text-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            font-weight: 800;
            position: relative;
            z-index: 2;
            animation: fadeInUp 1s ease;
        }
        
        .knowledge-hero p {
            font-size: 1.5rem;
            max-width: 800px;
            margin: 0 auto 40px;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 2;
            animation: fadeInUp 1s ease 0.2s both;
        }
        
        .ad-banner {
            background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
            padding: 30px;
            border-radius: 15px;
            margin: 40px 0;
            text-align: center;
            box-shadow: var(--shadow);
            border-left: 5px solid var(--accent);
            animation: pulse 3s infinite;
            position: relative;
            overflow: hidden;
        }
        
        .ad-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
            transition: var(--transition);
            animation: shimmer 3s infinite;
        }
        
        .ad-banner h3 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 10px;
            position: relative;
            z-index: 2;
        }
        
        .ad-banner p {
            font-size: 1.2rem;
            color: var(--primary);
            font-weight: 600;
            position: relative;
            z-index: 2;
        }
        
        .knowledge-categories {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 60px;
        }
        
        .category-btn {
            padding: 12px 25px;
            background: var(--white);
            border: 2px solid #e2e8f0;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
        }
        
        .category-btn.active, .category-btn:hover {
            background: var(--gradient);
            color: var(--white);
            border-color: transparent;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
        }
        
        .knowledge-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 40px;
        }
        
        .knowledge-card {
            background: var(--white);
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            opacity: 0;
            transform: translateY(30px);
            animation: fadeInUp 0.6s ease forwards;
        }
        
        .knowledge-card:nth-child(2) {
            animation-delay: 0.1s;
        }
        
        .knowledge-card:nth-child(3) {
            animation-delay: 0.2s;
        }
        
        .knowledge-card:nth-child(4) {
            animation-delay: 0.3s;
        }
        
        .knowledge-card:nth-child(5) {
            animation-delay: 0.4s;
        }
        
        .knowledge-card:nth-child(6) {
            animation-delay: 0.5s;
        }
        
        .knowledge-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
        }
        
        .knowledge-image {
            height: 220px;
            overflow: hidden;
            position: relative;
        }
        
        .knowledge-image::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient);
            opacity: 0;
            transition: var(--transition);
            z-index: 1;
        }
        
        .knowledge-card:hover .knowledge-image::before {
            opacity: 0.2;
        }
        
        .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 {
            padding: 25px;
        }
        
        .knowledge-content h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark);
            font-weight: 700;
            transition: var(--transition);
        }
        
        .knowledge-card:hover .knowledge-content h3 {
            color: var(--primary);
        }
        
        .knowledge-meta {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
            font-size: 0.9rem;
            color: #64748b;
        }
        
        .knowledge-meta span {
            display: flex;
            align-items: center;
        }
        
        .knowledge-meta i {
            margin-right: 5px;
        }
        
        .knowledge-content p {
            color: #64748b;
            margin-bottom: 20px;
            font-size: 1rem;
            line-height: 1.6;
        }
        
        .read-more {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            transition: var(--transition);
            position: relative;
        }
        
        .read-more::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: var(--transition);
        }
        
        .read-more:hover::after {
            width: 100%;
        }
        
        .read-more i {
            margin-left: 8px;
            transition: var(--transition);
        }
        
        .read-more:hover i {
            transform: translateX(8px);
        }
        
        .pagination {
            display: flex;
            justify-content: center;
            margin-top: 60px;
            gap: 10px;
        }
        
        .page-num {
            width: 45px;
            height: 45px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--white);
            box-shadow: var(--shadow);
            transition: var(--transition);
            cursor: pointer;
            font-weight: 600;
        }
        
        .page-num.active, .page-num:hover {
            background: var(--gradient);
            color: var(--white);
            transform: translateY(-3px);
        }
        
        /* 服务流程动画 */
        .process-animation {
            background: var(--light);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        
        .process-container {
            max-width: 1000px;
            margin: 0 auto;
            position: relative;
        }
        
        .process-line {
            position: absolute;
            top: 100px;
            left: 0;
            width: 100%;
            height: 4px;
            background: #e2e8f0;
            z-index: 1;
        }
        
        .process-line::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 0;
            height: 100%;
            background: var(--gradient);
            transition: width 3s ease;
            animation: processLine 8s infinite;
        }
        
        .process-steps {
            display: flex;
            justify-content: space-between;
            position: relative;
            z-index: 2;
        }
        
        .process-step {
            text-align: center;
            width: 200px;
            opacity: 0;
            transform: translateY(30px);
            animation: fadeInUp 0.8s ease forwards;
        }
        
        .process-step:nth-child(1) {
            animation-delay: 0.2s;
        }
        
        .process-step:nth-child(2) {
            animation-delay: 0.4s;
        }
        
        .process-step:nth-child(3) {
            animation-delay: 0.6s;
        }
        
        .process-step:nth-child(4) {
            animation-delay: 0.8s;
        }
        
        .step-icon {
            width: 100px;
            height: 100px;
            background: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: var(--primary);
            font-size: 2.5rem;
            position: relative;
            box-shadow: var(--shadow);
            transition: var(--transition);
            animation: pulse 2s infinite;
        }
        
        .process-step:hover .step-icon {
            background: var(--gradient);
            color: var(--white);
            transform: scale(1.1);
        }
        
        .step-number {
            position: absolute;
            top: -10px;
            right: -10px;
            width: 30px;
            height: 30px;
            background: var(--accent);
            border-radius: 50%;
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }
        
        .process-step h4 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--dark);
            font-weight: 700;
        }
        
        .process-step p {
            color: #64748b;
            font-size: 0.95rem;
        }
        
      
        /* 动画定义 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.3);
            }
            70% {
                box-shadow: 0 0 0 15px rgba(37, 99, 235, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
            }
        }
        
        @keyframes processLine {
            0% {
                width: 0;
            }
            50% {
                width: 100%;
            }
            100% {
                width: 100%;
            }
        }
        
        @keyframes shimmer {
            0% {
                left: -100%;
            }
            100% {
                left: 100%;
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .knowledge-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 992px) {
            .knowledge-hero h1 {
                font-size: 3.5rem;
            }
            
            .process-steps {
                flex-wrap: wrap;
                justify-content: center;
                gap: 40px;
            }
            
            .process-line {
                display: none;
            }
            
            .nav-contact {
                display: none;
            }
        }
        
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background: var(--white);
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 60px;
                transition: var(--transition);
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 20px 0;
            }
            
            .nav-toggle {
                display: block;
            }
            
            .knowledge-hero h1 {
                font-size: 2.8rem;
            }
            
            .knowledge-hero p {
                font-size: 1.3rem;
            }
            
            .section-title h2 {
                font-size: 2.5rem;
            }
            
            .section {
                padding: 80px 0;
            }
            
            .knowledge-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .section {
                padding: 60px 0;
            }
            
            .knowledge-hero h1 {
                font-size: 2.2rem;
            }
            
            .knowledge-hero p {
                font-size: 1.1rem;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .process-step {
                width: 100%;
                margin-bottom: 40px;
            }
        }