:root {
            --primary: #3a86ff;
            --secondary: #80f3ff;
            --accent: #ff006e;
            --dark: #14213d;
            --light: #f8f9fa;
            --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Exo 2', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            background: linear-gradient(to bottom, #0a1929, #14213d);
            color: var(--light);
            min-height: 100vh;
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航栏 */
        nav {
            background: rgba(10, 25, 41, 0.9);
            backdrop-filter: blur(10px);
            padding: 15px 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            font-size: 2rem;
        }
        
        .nav-links {
            display: flex;
            gap: 30px;
            align-items: center;
        }
        
        .nav-links a {
            color: var(--light);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--primary);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient);
            transition: width 0.3s;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .welcome-text {
            margin: 0;
            color: var(--light);
        }
        
        .welcome-text a {
            color: var(--primary);
            text-decoration: none;
            margin-left: 10px;
        }
        
        .welcome-text a:hover {
            text-decoration: underline;
        }
        
        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: space-around;
            width: 30px;
            height: 25px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0;
        }
        
        .hamburger span {
            width: 100%;
            height: 3px;
            background: var(--light);
            border-radius: 3px;
            transition: all 0.3s;
        }
        
        /* 主内容区 */
        main {
            padding-top: 100px;
        }
        
        /* 英雄区域 */
        .hero {
            text-align: center;
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(58, 134, 255, 0.1) 0%, rgba(0, 0, 0, 0) 70%);
            animation: pulse 15s infinite linear;
        }
        
        @keyframes pulse {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            background: linear-gradient(to right, var(--primary), var(--secondary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-weight: 700;
        }
        
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 40px;
            opacity: 0.9;
        }
        
        .stats {
            display: flex;
            justify-content: center;
            gap: 50px;
            margin-top: 50px;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 10px;
        }
        
        .stat-label {
            font-size: 1rem;
            opacity: 0.8;
        }
        
        /* 服务卡片 */
        .services {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin: 70px 0;
        }
        
        /* 导航锚点 */
        #services, #features, #about, #contact {
        scroll-margin-top: 50px;
        }
        
        #services {
        padding-top: 80px;
        margin-top: -80px;
        }

        #features {
        padding-top: 80px;
        margin-top: -80px;
        }
        
        #about {
        padding-top: 80px;
        margin-top: -80px;
        }
        
        #contact {
        padding-top: 80px;
        margin-top: -80px;
        }
        
        .service-card {
            background: linear-gradient(145deg, #1a2b4a, #162340);
            border-radius: 15px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s, box-shadow 0.3s;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }
        
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: var(--gradient);
            opacity: 0;
            z-index: -1;
            transition: opacity 0.3s;
        }
        
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(58, 134, 255, 0.3);
        }
        
        .service-card:hover::before {
            opacity: 0.1;
        }
        
        .service-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--gradient);
            color: white;
            font-size: 2.5rem;
            transition: transform 0.3s;
        }
        
        .service-card:hover .service-icon {
            transform: scale(1.1) rotate(5deg);
        }
        
        .cloud-icon {
            background: linear-gradient(145deg, #3a86ff, #83aaff);
            box-shadow: 0 5px 15px rgba(58, 134, 255, 0.4);
        }
        
        .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--primary);
        }
        
        .service-card p {
            margin-bottom: 25px;
            opacity: 0.9;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background: var(--gradient);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(58, 134, 255, 0.4);
            position: relative;
            overflow: hidden;
        }
        
        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(58, 134, 255, 0.6);
        }
        
        .btn:hover::before {
            left: 100%;
        }
        
        /* 特性部分 */
        .features {
            background: linear-gradient(to right, #0f1c2e, #162340);
            border-radius: 15px;
            padding: 50px;
            margin: 70px 0;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        .features::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(58, 134, 255, 0.1) 0%, rgba(0, 0, 0, 0) 70%);
        }
        
        .features h2 {
            text-align: center;
            margin-bottom: 50px;
            font-size: 2.2rem;
            color: var(--primary);
        }
        
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            transition: transform 0.3s;
        }
        
        .feature:hover {
            transform: translateX(10px);
        }
        
        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        
        .feature-content h3 {
            margin-bottom: 10px;
            color: var(--primary);
        }
        
        /* 关于我们和联系我们部分 */
        .about-section, .contact-section {
            background: linear-gradient(to right, #0f1c2e, #162340);
            border-radius: 15px;
            padding: 50px;
            margin: 70px 0;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        
        .about-section h2, .contact-section h2 {
            text-align: center;
            margin-bottom: 40px;
            font-size: 2.2rem;
            color: var(--primary);
        }
        
        .contact-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        
        .contact-card {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 10px;
            padding: 20px;
            text-align: center;
            transition: transform 0.3s;
        }
        
        .contact-card:hover {
            transform: translateY(-5px);
        }
        
        .contact-icon {
            font-size: 2rem;
            margin-bottom: 15px;
            color: var(--primary);
        }
        
        /* 页脚样式 */
        footer {
            margin-top: 100px;
            padding-top: 50px;
            background: linear-gradient(to bottom, #0a1420, #0c1220);
            position: relative;
        }
        
        footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--gradient);
        }
        
        .footer-content {
            display:grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-info {
            background: rgba(15, 25, 41, 0.5);
            border-radius: 10px;
            padding: 30px;
            margin-top: 40px;
        }
        
       .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 25px;
            margin-bottom: 20px;
        }
        
        .footer-link {
            display: flex;
            align-items: center;
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s;
            font-size: 0.9rem;
        }
        
        .footer-link:hover {
            color: var(--accent);
        }
        
        .footer-link img {
            width: 16px;
            height: 16px;
            margin-right: 8px;
        }
        
        .copyright {
            text-align: center;
            padding: 20px 0;
            opacity: 0.7;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background: rgba(10, 25, 41, 0.95);
                width: 100%;
                text-align: center;
                transition: 0.3s;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
                padding: 20px 0;
                gap: 20px;
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .hamburger {
                display: flex;
            }
            
            .hamburger.active span:nth-child(1) {
                transform: rotate(45deg) translate(5px, 5px);
            }
            
            .hamburger.active span:nth-child(2) {
                opacity: 0;
            }
            
            .hamburger.active span:nth-child(3) {
                transform: rotate(-45deg) translate(7px, -6px);
            }
            
            .user-info {
                flex-direction: column;
                gap: 5px;
            }
            
            .welcome-text {
                text-align: center;
            }
        }
        
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .stats {
                flex-direction: column;
                gap: 30px;
            }
            
            .services {
                grid-template-columns: 1fr;
            }
            
            .feature-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-links {
                flex-direction: column;
                align-items: center;
                gap: 15px;
            }
            
            .about-section, .contact-section, .features {
                padding: 30px 20px;
            }
        }