/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        ul {
            list-style: none;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        /* 菜单区域 */
        header {
            background-color: #fff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            /*position: sticky;*/
            top: 0;
            z-index: 100;
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            color: #2c3e50;
        }
        
        .nav-menu {
            display: flex;
        }
        
        .nav-menu li {
            margin-left: 25px;
        }
        
        .nav-menu a {
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-menu a:hover {
            color: #3498db;
        }
        
        /* Banner区域 */
        .banner {
            background: linear-gradient(135deg, #3498db, #2c3e50);
            color: white;
            padding: 80px 0;
            text-align: center;
        }
        
        .banner h1 {
            font-size: 2.8rem;
            margin-bottom: 20px;
        }
        
        .banner p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 关于我们 */
        .about {
            padding: 80px 0;
            background-color: #fff;
        }
        
        .about-container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }
        
        .about-text {
            flex: 1;
            min-width: 300px;
            padding: 20px;
        }
        
        .about-image {
            flex: 1;
            min-width: 300px;
            padding: 20px;
        }
        
        .section-title {
            font-size: 2rem;
            margin-bottom: 30px;
            text-align: center;
            color: #2c3e50;
        }
        
        /* 特色优势 */
        .features {
            padding: 80px 0;
            background-color: #f2f2f2;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
        }
        
        .feature-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: #2c3e50;
        }
        
        /* 常见问题 */
        .faq {
            padding: 80px 0;
            background-color: #fff;
        }
        
        .faq-item {
            margin-bottom: 15px;
            border: 1px solid #eee;
            border-radius: 5px;
            overflow: hidden;
        }
        
        .faq-question {
            padding: 15px;
            background: #f9f9f9;
            cursor: pointer;
            font-weight: 500;
            position: relative;
        }
        
        .faq-question::after {
            content: '+';
            position: absolute;
            right: 15px;
            transition: transform 0.3s;
        }
        
        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }
        
        .faq-answer {
            padding: 0 15px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s, padding 0.3s;
        }
        
        .faq-item.active .faq-answer {
            padding: 15px;
            max-height: 1000px;
        }
        
        /* App下载 */
        .app-download {
            padding: 80px 0;
            background: linear-gradient(135deg, #2c3e50, #3498db);
            color: white;
        }
        
        .app-container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
        }
        
        .app-text {
            flex: 1;
            min-width: 300px;
            padding: 20px;
        }
        
        .app-image {
            flex: 1;
            min-width: 300px;
            padding: 20px;
            text-align: center;
        }
        
        .download-btn {
            display: inline-block;
            background: white;
            color: #3498db;
            padding: 12px 25px;
            border-radius: 30px;
            font-weight: bold;
            margin-top: 20px;
            transition: transform 0.3s;
        }
        
        .download-btn:hover {
            transform: translateY(-3px);
        }
        
        /* 用户点评 */
        .testimonials {
            padding: 80px 0;
            background-color: #f2f2f2;
        }
        
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 30px;
        }
        
        .testimonial-card {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .testimonial-text {
            font-style: italic;
            margin-bottom: 20px;
        }
        
        .testimonial-author {
            font-weight: bold;
            color: #2c3e50;
        }
        
        /* 热门话题 */
        .topics {
            padding: 60px 0;
            background-color: #fff;
        }
        
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 15px;
        }
        
        .topic-link {
            display: block;
            padding: 10px;
            text-align: center;
            background: #f9f9f9;
            border-radius: 5px;
            transition: background 0.3s;
        }
        
        .topic-link:hover {
            background: #3498db;
            color: white;
        }
        
        /* 页脚 */
        footer {
            background: #2c3e50;
            color: white;
            padding: 50px 0 20px;
        }
        
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-bottom: 30px;
        }
        
        .footer-column {
            flex: 1;
            min-width: 200px;
            margin-bottom: 30px;
            padding: 0 15px;
        }
        
        .footer-column h3 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background: #3498db;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a:hover {
            color: #3498db;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            
            .banner h1 {
                font-size: 2rem;
            }
            
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            
            .topics-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }