/* 基础样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            color: #333;
            line-height: 1.6;
            background-color: #f9f9f9;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部样式 */
        header {
            background-color: #1a365d;
            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: 28px;
            font-weight: bold;
        }
        
        .logo span {
            color: #4dabf7;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav li {
            margin-left: 25px;
        }
        
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        nav a:hover {
            color: #4dabf7;
        }
        
        /* 主要内容区域 */
        .hero {
            background: linear-gradient(rgba(26, 54, 93, 0.85), rgba(26, 54, 93, 0.9)), url('https://images.unsplash.com/photo-1511895426328-dc8714191300?ixlib=rb-1.2.1&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            text-align: center;
            padding: 100px 20px;
            margin-bottom: 50px;
        }
        
        .hero h1 {
            font-size: 42px;
            margin-bottom: 20px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .hero p {
            font-size: 18px;
            max-width: 700px;
            margin: 0 auto 30px;
        }
        
        .cta-button {
            display: inline-block;
            background-color: #4dabf7;
            color: white;
            padding: 15px 35px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: bold;
            font-size: 18px;
            transition: background-color 0.3s;
        }
        
        .cta-button:hover {
            background-color: #339af0;
        }
        
        /* 内容板块 */
        .section {
            background-color: white;
            padding: 40px;
            margin-bottom: 40px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .section-title {
            color: #1a365d;
            font-size: 28px;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 2px solid #4dabf7;
        }
        
        .section p {
            margin-bottom: 15px;
            font-size: 16px;
        }
        
        /* 关键词样式 */
        .keyword {
            font-weight: bold;
            color: #1a365d;
        }
        
        /* 服务项目 */
        .services {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-top: 30px;
        }
        
        .service-item {
            width: 48%;
            background-color: #f1f8ff;
            padding: 25px;
            border-radius: 8px;
            margin-bottom: 20px;
            border-left: 4px solid #4dabf7;
        }
        
        .service-item h3 {
            color: #1a365d;
            margin-bottom: 15px;
        }
        
        /* 常见问题 */
        .faq-item {
            border-bottom: 1px solid #eaeaea;
            padding: 20px 0;
        }
        
        .faq-question {
            font-weight: bold;
            color: #1a365d;
            font-size: 18px;
            margin-bottom: 10px;
            cursor: pointer;
        }
        
        .faq-answer {
            padding-left: 20px;
            color: #555;
        }
        
        /* 热门话题按钮 */
        .topics {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-top: 40px;
        }
        
        .topic-button {
            width: 24%;
            background-color: #1a365d;
            color: white;
            padding: 15px 10px;
            border-radius: 6px;
            text-decoration: none;
            text-align: center;
            font-weight: 500;
            transition: all 0.3s;
            margin-bottom: 15px;
        }
        
        .topic-button:hover {
            background-color: #4dabf7;
            transform: translateY(-3px);
        }
        
        /* 页脚 */
        footer {
            background-color: #1a365d;
            color: white;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        
        .footer-section {
            width: 30%;
            margin-bottom: 30px;
        }
        
        .footer-section h3 {
            font-size: 20px;
            margin-bottom: 20px;
            color: #4dabf7;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
            color: #aaa;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                text-align: center;
            }
            
            nav ul {
                margin-top: 20px;
                justify-content: center;
            }
            
            nav li {
                margin: 0 10px;
            }
            
            .service-item, .footer-section {
                width: 100%;
            }
            
            .topic-button {
                width: 48%;
                margin-bottom: 15px;
            }
            
            .hero h1 {
                font-size: 32px;
            }
            
            .hero {
                padding: 60px 20px;
            }
        }
        
        @media (max-width: 480px) {
            .topic-button {
                width: 100%;
            }
            
            .section {
                padding: 25px 20px;
            }
        }