* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            color: #333;
            background: linear-gradient(135deg, #6ebaff 0%, #3a7bd5 100%);
            min-height: 100vh;
            overflow-x: hidden;
            position: relative;
        }
        
        /* 星空背景效果 */
        .stars {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }
        
        .star {
            position: absolute;
            background-color: white;
            border-radius: 50%;
            animation: twinkle linear infinite;
        }
        
        @keyframes twinkle {
            0%, 100% { opacity: 0.2; }
            50% { opacity: 1; }
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        /* 导航栏样式 */
        header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            margin-bottom: 40px;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo i {
            font-size: 32px;
            color: #fff;
            margin-right: 10px;
            text-shadow: 0 0 10px rgba(0, 0, 150, 0.3);
        }
        
        .logo h1 {
            color: white;
            font-size: 28px;
            font-weight: 700;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav li {
            margin-left: 25px;
        }
        
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 20px;
            transition: all 0.3s ease;
        }
        
        nav a:hover, nav a.active {
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
        }
        
        /* 英雄区域样式 */
        .hero {
            text-align: center;
            padding: 60px 20px;
            margin-bottom: 40px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .hero h2 {
            font-size: 42px;
            color: white;
            margin-bottom: 20px;
            text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        }
        
        .hero p {
            font-size: 20px;
            color: rgba(255, 255, 255, 0.9);
            max-width: 700px;
            margin: 0 auto 30px;
            line-height: 1.6;
        }
        
        .btn {
            display: inline-block;
            background: white;
            color: #3a7bd5;
            padding: 14px 30px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }
        
        /* 产品区域样式 */
        .products {
            margin-bottom: 60px;
        }
        
        .section-title {
            text-align: center;
            color: white;
            font-size: 32px;
            margin-bottom: 40px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .product-card {
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }
        
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
        }
        
        .card-header {
            padding: 25px 25px 0;
        }
        
        .card-header i {
            font-size: 48px;
            color: #3a7bd5;
            margin-bottom: 20px;
        }
        
        .card-header h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: #333;
        }
        
        .card-body {
            padding: 0 25px 25px;
        }
        
        .card-body p {
            color: #666;
            line-height: 1.6;
            margin-bottom: 20px;
        }
        
        .card-footer {
            padding: 15px 25px;
            background: #f8f9fa;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .price {
            font-weight: 700;
            color: #3a7bd5;
            font-size: 20px;
        }
        
        .card-btn {
            padding: 8px 20px;
            background: #3a7bd5;
            color: white;
            border-radius: 20px;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .card-btn:hover {
            background: #2c69c0;
        }
        
        /* 页脚样式 */
        footer {
            text-align: center;
            padding: 30px 0;
            color: white;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }
        
        .social-links {
            margin-bottom: 20px;
        }
        
        .social-links a {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            margin: 0 5px;
            color: white;
            text-align: center;
            line-height: 40px;
            transition: all 0.3s ease;
        }
        
        .social-links a:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            header {
                flex-direction: column;
                text-align: center;
            }
            
            nav ul {
                margin-top: 20px;
                justify-content: center;
            }
            
            nav li {
                margin: 0 10px;
            }
            
            .hero h2 {
                font-size: 32px;
            }
            
            .hero p {
                font-size: 18px;
            }
            
            .product-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto;
            }
        }
        
        @media (max-width: 480px) {
            .logo h1 {
                font-size: 24px;
            }
            
            nav li {
                margin: 0 5px;
            }
            
            nav a {
                padding: 6px 10px;
                font-size: 14px;
            }
            
            .hero h2 {
                font-size: 28px;
            }
            
            .hero p {
                font-size: 16px;
            }
            
            .btn {
                padding: 12px 25px;
            }
        }