/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        
        html, body {
            height: 100%;
            overflow-x: hidden;
            touch-action: pan-y;
        }
        
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.6;
            display: flex;
            flex-direction: column;
        }
        
        /* 顶部导航 - 全屏宽度 */
        .top-nav {
            width: 100%;
            background-color: #fff;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 25px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 24px;
            font-weight: 600;
            color: #2c3e50;
            text-decoration: none;
        }
        
        .logo-icon {
            width: 40px;
            height: 40px;
            margin-right: 12px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 35px;
        }
        
        .nav-links a {
            color: #2c3e50;
            text-decoration: none;
            font-weight: 500;
            font-size: 18px;
            position: relative;
            padding: 8px 0;
            transition: all 0.3s;
        }
        
        .nav-links a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: #3498db;
            bottom: 0;
            left: 0;
            transition: width 0.3s;
        }
        
        .nav-links a:hover {
            color: #3498db;
        }
        
        .nav-links a:hover:after {
            width: 100%;
        }
        
        .menu-toggle {
            display: none;
            font-size: 24px;
            color: #2c3e50;
            cursor: pointer;
        }
        
        /* 页面标题 */
        .page-header {
            background: linear-gradient(135deg, #3498db, #2980b9);
            color: white;
            padding: 100px 0 80px;
            text-align: center;
        }
        
        .page-title {
            font-size: 42px;
            margin-bottom: 20px;
            font-weight: 600;
        }
        
        .page-subtitle {
            font-size: 18px;
            max-width: 700px;
            margin: 0 auto;
            opacity: 0.9;
        }
        
        /* 内容容器 */
        .content-section {
            padding: 80px 0;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }
        
        .section-title h2 {
            font-size: 36px;
            color: #2c3e50;
            display: inline-block;
            margin-bottom: 15px;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            width: 60px;
            height: 3px;
            background: #3498db;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
        }
        
        .section-title p {
            font-size: 18px;
            color: #7f8c8d;
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 服务内容 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .service-item {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }
        
        .service-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .service-img {
            height: 200px;
            background-color: #eee;
            background-size: cover;
            background-position: center;
        }
        
        .service-content {
            padding: 30px;
        }
        
        .service-name {
            font-size: 22px;
            margin-bottom: 15px;
            color: #2980b9;
        }
        
        .service-desc {
            color: #666;
            margin-bottom: 20px;
            line-height: 1.8;
        }
        
        .learn-more {
            display: inline-block;
            color: #3498db;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .learn-more:hover {
            color: #2980b9;
            text-decoration: underline;
        }
        
        /* 业绩案例 - 可拖动横向滚动 */
        .cases-container {
            position: relative;
            margin-top: 50px;
            overflow: hidden;
            user-select: none;
        }
        
        .cases-scroll-wrapper {
            display: flex;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            scroll-behavior: smooth;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 20px;
            cursor: grab;
        }
        
        .cases-scroll-wrapper::-webkit-scrollbar {
            display: none;
        }
        
        .cases-grid {
            display: flex;
            gap: 30px;
            padding: 10px 0;
        }
        
        .case-item {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            width: 300px;
            flex-shrink: 0;
            scroll-snap-align: start;
        }
        
        .case-item:active {
            cursor: grabbing;
        }
        
        .case-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        
        .case-img {
            height: 200px;
            background-color: #eee;
            background-size: cover;
            background-position: center;
        }

        
        .case-content {
            padding: 25px;
        }
        
        .case-title {
            font-size: 20px;
            margin-bottom: 10px;
            color: #2c3e50;
        }
        
        .case-desc {
            color: #666;
            margin-bottom: 15px;
            line-height: 1.6;
        }
        
        .case-tag {
            display: inline-block;
            background: #f1f8fe;
            color: #3498db;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 12px;
            margin-right: 8px;
            margin-bottom: 8px;
        }
        
        /* 查看更多按钮 */
        .view-more-container {
            text-align: center;
            margin-top: 40px;
        }
        
        .view-more-btn {
            display: inline-block;
            padding: 12px 35px;
            background: #3498db;
            color: white;
            text-decoration: none;
            border-radius: 30px;
            font-weight: 500;
            font-size: 16px;
            transition: all 0.3s;
            border: 2px solid #3498db;
        }
        
        .view-more-btn:hover {
            background: transparent;
            color: #3498db;
        }
        
        /* 技术优势 */
        .tech-advantages {
            background: #f1f8fe;
            padding: 80px 0;
        }
        
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .advantage-item {
            text-align: center;
            padding: 40px 30px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
            transition: all 0.3s ease;
        }
        
        .advantage-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
        }
        
        .advantage-icon {
            font-size: 50px;
            color: #3498db;
            margin-bottom: 25px;
        }
        
        .advantage-title {
            font-size: 20px;
            margin-bottom: 15px;
            color: #2c3e50;
        }
        
        .advantage-desc {
            color: #666;
            line-height: 1.8;
        }
        
        /* 联系我们CTA */
        .cta-section {
            background: linear-gradient(135deg, #3498db, #2980b9);
            color: white;
            padding: 80px 0;
            text-align: center;
        }
        
        .cta-title {
            font-size: 36px;
            margin-bottom: 20px;
        }
        
        .cta-desc {
            font-size: 18px;
            max-width: 700px;
            margin: 0 auto 40px;
            opacity: 0.9;
        }
        
        .cta-btn {
            display: inline-block;
            padding: 15px 40px;
            background: white;
            color: #3498db;
            text-decoration: none;
            border-radius: 30px;
            font-weight: 500;
            font-size: 16px;
            transition: all 0.3s;
            border: 2px solid white;
        }
        
        .cta-btn:hover {
            background: transparent;
            color: white;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .nav-links {
                display: none;
            }
            
            .menu-toggle {
                display: block;
            }
            
            .page-header {
                padding: 80px 0 60px;
            }
            
            .page-title {
                font-size: 36px;
            }
            
            .section-title h2 {
                font-size: 32px;
            }
            
            .content-section {
                padding: 60px 0;
            }
        }
        
        @media (max-width: 768px) {
            .nav-container {
                padding: 20px;
            }
            
            .logo {
                font-size: 20px;
            }
            
            .page-title {
                font-size: 30px;
            }
            
            .section-title h2 {
                font-size: 28px;
            }
            
            .services-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-container {
                flex-direction: column;
            }
            
            .qr-codes {
                margin-top: 20px;
                justify-content: flex-start;
            }
        }
        
        /* 移动菜单 */
        .mobile-menu {
            position: fixed;
            top: 91px;
            left: 0;
            width: 100%;
            background: #fff;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
            transform: translateY(-150%);
            opacity: 0;
            transition: all 0.4s ease;
            z-index: 999;
        }
        
        .mobile-menu.active {
            transform: translateY(0);
            opacity: 1;
        }
        
        .mobile-menu ul {
            list-style: none;
            padding: 20px 0;
        }
        
        .mobile-menu li {
            padding: 15px 20px;
            border-bottom: 1px solid #eee;
        }
        
        .mobile-menu a {
            color: #2c3e50;
            text-decoration: none;
            font-size: 18px;
            display: block;
            transition: all 0.3s;
        }
        
        .mobile-menu a:hover {
            color: #3498db;
            padding-left: 10px;
        }