* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f5f5f5;
            color: #333;
            line-height: 1.6;
        }
        
        /* 导航栏样式 */
        header {
            background-color: #2c3e50;
            color: white;
            padding: 15px 5%;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            color: #3498db;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 25px;
        }
        
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: #3498db;
        }
        
        /* 主内容区样式 */
        .container {
            display: flex;
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px;
        }
        
        /* 左侧目录样式 */
        .sidebar {
            width: 250px;
            position: sticky;
            top: 90px;
            height: calc(100vh - 120px);
            background: white;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 0 15px rgba(0,0,0,0.05);
            margin-right: 25px;
            overflow-y: auto;
        }
        
        .sidebar h3 {
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 2px solid #3498db;
            color: #2c3e50;
        }
        
        .sidebar ul {
            list-style: none;
        }
        
        .sidebar li {
            margin-bottom: 12px;
        }
        
        .sidebar a {
            color: #555;
            text-decoration: none;
            display: block;
            padding: 8px 10px;
            border-radius: 5px;
            transition: all 0.3s;
        }
        
        .sidebar a:hover, .sidebar a.active {
            background-color: #3498db;
            color: white;
        }
        
        /* 主内容区域 */
        .main-content {
            flex: 1;
        }
        
        /* 标题区域样式 */
        .hero {
            background: linear-gradient(135deg, #3498db, #2c3e50);
            color: white;
            padding: 40px;
            border-radius: 10px;
            margin-bottom: 30px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        .hero h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
        }
        
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.9;
        }
        
        /* 内容区块样式 */
        .section {
            background: white;
            border-radius: 10px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        
        .section h2 {
            color: #2c3e50;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #f0f0f0;
        }
        
        .content-wrapper {
            display: flex;
            align-items: center;
            margin-bottom: 25px;
        }
        
        .content-wrapper:nth-child(even) {
            flex-direction: row-reverse;
        }
        
        .text-content {
            flex: 1;
            padding: 20px;
        }
        
        .media-content {
            flex: 1;
            text-align: center;
        }
        
        .media-content img {
            max-width: 100%;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        .media-content iframe {
            max-width: 100%;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        /* 按钮区域样式 */
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin: 40px 0;
        }
        
        .btn {
            padding: 15px 30px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        
        .btn-primary {
            background: #3498db;
            color: white;
            box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
        }
        
        .btn-primary:hover {
            background: #2980b9;
            transform: translateY(-3px);
        }
        
        .btn-outline {
            background: transparent;
            color: #3498db;
            border: 2px solid #3498db;
        }
        
        .btn-outline:hover {
            background: #3498db;
            color: white;
            transform: translateY(-3px);
        }
        
        /* 用户评价样式 */
        .testimonials {
            background: white;
            border-radius: 10px;
            padding: 30px;
            margin-bottom: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            position: relative;
            height: 300px;
            overflow: hidden;
        }
        
        .testimonial {
            padding: 20px;
            background: #f9f9f9;
            border-radius: 8px;
            margin-bottom: 15px;
            animation: scroll 30s infinite;
        }
        
        @keyframes scroll {
            0%, 12% { transform: translateY(0); }
            20%, 32% { transform: translateY(-100%); }
            40%, 52% { transform: translateY(-200%); }
            60%, 72% { transform: translateY(-300%); }
            80%, 92% { transform: translateY(-400%); }
            100% { transform: translateY(-500%); }
        }
        
        .user-info {
            display: flex;
            align-items: center;
            margin-bottom: 10px;
        }
        
        .user-info img {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            margin-right: 15px;
            object-fit: cover;
        }
        
        /* 资讯区域样式 */
        .news-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        
        .news-card {
            background: #f9f9f9;
            border-radius: 8px;
            overflow: hidden;
            transition: transform 0.3s;
        }
        
        .news-card:hover {
            transform: translateY(-5px);
        }
        
        .news-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        
        .news-content {
            padding: 20px;
        }
        
        .news-date {
            color: #7f8c8d;
            font-size: 0.9rem;
            margin-bottom: 10px;
        }
        
        /* 问答区域样式 */
        .faq-item {
            margin-bottom: 15px;
            border: 1px solid #eee;
            border-radius: 8px;
            overflow: hidden;
        }
        
        .faq-question {
            padding: 15px 20px;
            background: #f9f9f9;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
        }
        
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s, padding 0.3s;
        }
        
        .faq-item.active .faq-answer {
            padding: 20px;
            max-height: 200px;
        }
        
        /* 底部样式 */
        footer {
            background: #2c3e50;
            color: white;
            padding: 40px 0 20px;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            padding: 0 20px;
        }
        
        .footer-section h3 {
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 1px solid #7f8c8d;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: #3498db;
        }
        
        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-icons a {
            color: white;
            background: #34495e;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.3s;
        }
        
        .social-icons a:hover {
            background: #3498db;
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid #34495e;
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .container {
                flex-direction: column;
            }
            
            .sidebar {
                width: 100%;
                position: relative;
                height: auto;
                margin-bottom: 20px;
            }
            
            .content-wrapper, .content-wrapper:nth-child(even) {
                flex-direction: column;
            }
            
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .hero h1 {
                font-size: 2.2rem;
            }
            
            .hero p {
                font-size: 1rem;
            }
            
            .section {
                padding: 20px;
            }
        }