* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f5f7f9;
            color: #333;
            line-height: 1.6;
        }
		
		a {
			text-decoration: none; /* 移除下划线 */
		}
		
		a:visited {
   			 color: #ffffff; /* 访问过的链接颜色 */
		}

        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        header {
            background: linear-gradient(to right, #3498db 85%, #ffffff);
            color: white;
            padding: 20px 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 24px;
            font-weight: bold;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            font-size: 28px;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 25px;
        }
        
        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        nav ul li a:hover {
            color: #f1c40f;
        }
        
        .hero {                         /*  弹簧名称 型号 */
            padding: 45px 0;
            text-align: center;
            background: white;
            margin-bottom: 30px;
            border-radius: 0 0 10px 10px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
        }
        
        .hero h1 {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: #2c3e50;
        }
        
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            color: #7f8c8d;
        }
        
        .product-showcase {
            display: flex;
            margin-bottom: 40px;
            gap: 30px;
        }
        
        .product-image {
            flex: 1;
            background: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            text-align: center;
        }
        
        .product-image img {
            max-width: 100%;
            border-radius: 5px;
        }
        
        .product-details {
            flex: 1;
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
        }
        
        .product-details h2 {
            color: #2c3e50;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #3498db;
        }
        
        .specs {
            margin-bottom: 25px;
        }
        
        .spec-item {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid #eee;
        }
        
        .spec-item:last-child {
            border-bottom: none;
        }
        
        .spec-name {
            color: #7f8c8d;
        }
        
        .spec-value {
            font-weight: 500;
            color: #2c3e50;
        }
        
        .action-buttons {
            display: flex;
            gap: 15px;
            margin-top: 25px;
        }
        
        .btn {
            padding: 12px 25px;
            border: none;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .btn-primary {
            background: #3498db;
            color: white;
        }
        
        .btn-primary:hover {
            background: #2980b9;
        }
        
        .btn-outline {
            background: transparent;
            border: 2px solid #3498db;
            color: #3498db;
        }
        
        .btn-outline:hover {
            background: #3498db;
            color: white;
        }
        
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 40px;
        }
        
        .feature-card {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            text-align: center;
        }
        
        .feature-card i {
            font-size: 40px;
            color: #3498db;
            margin-bottom: 15px;
        }
        
        .feature-card h3 {
            margin-bottom: 15px;
            color: #2c3e50;
        }
        
        .applications {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            margin-bottom: 40px;
        }
        
        .applications h2 {
            color: #2c3e50;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #3498db;
        }
        
        .application-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 15px;
            list-style: none;
        }
        
        .application-list li {
            padding: 10px 15px;
            background: #f8f9fa;
            border-left: 10px solid #3498db;
            border-radius: 3px;
        }
        
        footer {
            background: #3498db;
            color: white;
            padding: 15px 0;
            text-align: center;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            text-align: left;
            margin-bottom: 30px;
        }
        
        .footer-section h3 {
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        
        .footer-section p, .footer-section li {
            margin-bottom: 10px;
            color: #ecf0f1;
        }
        
        .footer-section ul {
            list-style: none;
        }
        
        .footer-section a {
            color: #3498db;
            text-decoration: none;
        }
        
        .footer-section a:hover {
            text-decoration: underline;
        }
        
        .copyright {
            padding-top: 20px;
            border-top: 1px solid #3c546c;
            color: #ecf0f1;
        }
        
        @media (max-width: 768px) {
            .product-showcase {
                flex-direction: column;
            }
            
            .header-content {
                flex-direction: column;
                text-align: center;
            }
            
            nav ul {
                margin-top: 20px;
                justify-content: center;
            }
            
            nav ul li {
                margin: 0 10px;
            }
            
            .action-buttons {
                flex-direction: column;
            }
        }