/* 全局样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', sans-serif;
        }
        
        body {
            color: #333;
            line-height: 1.6;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background-color: #4CAF50;
            color: white;
            border-radius: 4px;
            font-weight: bold;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }
        
        .btn:hover {
            background-color: #45a049;
            transform: translateY(-2px);
        }
        
        .btn-secondary {
            background-color: #f8f9fa;
            color: #333;
            border: 1px solid #ddd;
        }
        
        .btn-secondary:hover {
            background-color: #e9ecef;
        }
        
        section {
            padding: 80px 0;
        }
        
        h2 {
            font-size: 36px;
            margin-bottom: 30px;
            text-align: center;
        }
        
        /* 头部样式 */
        header {
            background-color: #fff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            z-index: 1000;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            height: 50px;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 30px;
        }
        
        nav ul li a {
            font-weight: 500;
            padding: 5px 0;
            position: relative;
        }
        
        nav ul li a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #4CAF50;
            transition: width 0.3s;
        }
        
        nav ul li a:hover:after {
            width: 100%;
        }
        
        /* 产品展示部分 */
        .hero {
            padding-top: 150px;
            background-color: #f9f9f9;
        }
        
        .hero-content {
            display: flex;
            align-items: center;
        }
        
        .hero-text {
            flex: 1;
            padding-right: 50px;
        }
        
        .hero-text h1 {
            font-size: 48px;
            margin-bottom: 20px;
            color: #222;
        }
        
        .hero-text p {
            font-size: 18px;
            margin-bottom: 30px;
            color: #666;
        }
        
        .hero-buttons {
            display: flex;
            gap: 15px;
        }
        
        .hero-image {
            flex: 1;
            text-align: center;
        }
        
        .hero-image img {
            max-width: 100%;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        /* 使用步骤部分 */
        .steps {
            background-color: white;
        }
        
        .steps-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        
        .step-item {
            background-color: #f9f9f9;
            padding: 30px;
            border-radius: 8px;
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .step-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .step-number {
            display: inline-block;
            width: 50px;
            height: 50px;
            background-color: #4CAF50;
            color: white;
            border-radius: 50%;
            line-height: 50px;
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 20px;
        }
        
        .step-item h3 {
            font-size: 22px;
            margin-bottom: 15px;
        }
        
        /* 价格部分 */
        .pricing {
            background-color: #f9f9f9;
        }
        
        .pricing-container {
            display: flex;
            justify-content: center;
            gap: 30px;
        }
        
        .pricing-card {
            background-color: white;
            border-radius: 8px;
            padding: 40px 30px;
            text-align: center;
            flex: 1;
            max-width: 350px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .pricing-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .pricing-card h3 {
            font-size: 24px;
            margin-bottom: 20px;
        }
        
        .price {
            font-size: 48px;
            font-weight: bold;
            color: #4CAF50;
            margin-bottom: 20px;
        }
        
        .price span {
            font-size: 16px;
            color: #666;
        }
        
        .pricing-features {
            list-style: none;
            margin-bottom: 30px;
        }
        
        .pricing-features li {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
        }
        
        /* 产品优势部分 */
        .benefits {
            background-color: white;
        }
        
        .benefit-item {
            display: flex;
            align-items: center;
            margin-bottom: 60px;
        }
        
        .benefit-item:nth-child(even) {
            flex-direction: row-reverse;
        }
        
        .benefit-text {
            flex: 1;
            padding: 0 50px;
        }
        
        .benefit-text h3 {
            font-size: 28px;
            margin-bottom: 20px;
        }
        
        .benefit-text p {
            margin-bottom: 25px;
            color: #666;
        }
        
        .benefit-image {
            flex: 1;
            text-align: center;
        }
        
        .benefit-image img {
            max-width: 100%;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        /* 新闻部分 */
        .news {
            background-color: #f9f9f9;
        }
        
        .news-container {
            display: flex;
            gap: 40px;
        }
        
        .news-main {
            flex: 2;
        }
        
        .news-sidebar {
            flex: 1;
        }
        
        .news-item {
            background-color: white;
            border-radius: 8px;
            padding: 25px;
            margin-bottom: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .news-item h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }
        
        .news-date {
            color: #666;
            font-size: 14px;
            margin-bottom: 15px;
            display: block;
        }
        
        .faq-item {
            background-color: white;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 15px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .faq-item h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .tag {
            background-color: #e9ecef;
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 14px;
            transition: all 0.3s;
        }
        
        .tag:hover {
            background-color: #4CAF50;
            color: white;
        }
        
        /* 页脚部分 */
        footer {
            background-color: #222;
            color: #aaa;
        }
        
        .footer-links {
            padding: 60px 0;
            border-bottom: 1px solid #444;
        }
        
        .footer-links-container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        
        .footer-column {
            flex: 1;
            min-width: 200px;
            margin-bottom: 30px;
        }
        
        .footer-column h3 {
            color: white;
            font-size: 18px;
            margin-bottom: 20px;
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
        }
        
        .footer-column ul li a:hover {
            color: white;
        }
        
        .copyright {
            padding: 20px 0;
            text-align: center;
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-content, .benefit-item {
                flex-direction: column;
            }
            
            .hero-text, .benefit-text {
                padding-right: 0;
                margin-bottom: 40px;
            }
            
            .steps-container {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .pricing-container {
                flex-direction: column;
                align-items: center;
            }
            
            .pricing-card {
                max-width: 100%;
                width: 100%;
            }
        }
        
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
            }
            
            nav ul {
                margin-top: 20px;
            }
            
            nav ul li {
                margin: 0 10px;
            }
            
            .steps-container {
                grid-template-columns: 1fr;
            }
            
            .news-container {
                flex-direction: column;
            }
        }