* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        header {
            padding: 30px 0;
            border-bottom: 1px solid #eaeaea;
            margin-bottom: 40px;
        }
        
        .logo {
            font-size: 32px;
            font-weight: 700;
            color: #2c5aa0;
            margin-bottom: 10px;
        }
        
        .tagline {
            font-size: 18px;
            color: #666;
        }
        
        .nav {
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .nav a {
            color: #2c5aa0;
            text-decoration: none;
            padding: 8px 16px;
            border: 1px solid #2c5aa0;
            border-radius: 4px;
            transition: all 0.3s;
        }
        
        .nav a:hover {
            background-color: #2c5aa0;
            color: white;
        }
        
        .country-section {
            background-color: white;
            padding: 30px;
            margin-bottom: 30px;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
        }
        
        h1, h2, h3, h4 {
            color: #2c5aa0;
            margin-bottom: 20px;
        }
        
        h1 {
            font-size: 28px;
        }
        
        h2 {
            font-size: 24px;
            padding-bottom: 10px;
            border-bottom: 2px solid #eaeaea;
            margin-bottom: 20px;
        }
        
        h3 {
            font-size: 22px;
            color: #4a6fa5;
        }
        
        h4 {
            font-size: 18px;
            color: #2c5aa0;
            margin-top: 20px;
            margin-bottom: 15px;
        }
        
        p {
            margin-bottom: 15px;
            text-align: justify;
        }
        
        .keyword {
            font-weight: bold;
            color: #2c5aa0;
        }
        
        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }
        
        .info-card {
            background-color: #f5f8ff;
            padding: 20px;
            border-radius: 6px;
            border-left: 4px solid #2c5aa0;
        }
        
        .info-card h4 {
            margin-top: 0;
        }
        
        ul, ol {
            padding-left: 20px;
            margin-bottom: 15px;
        }
        
        li {
            margin-bottom: 8px;
        }
        
        .highlight-box {
            background-color: #eef4ff;
            border: 1px solid #c2d6ff;
            padding: 20px;
            border-radius: 6px;
            margin: 20px 0;
        }
        
        .faq-section {
            background-color: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.05);
            margin-bottom: 40px;
        }
        
        .faq-item {
            margin-bottom: 25px;
            padding-bottom: 25px;
            border-bottom: 1px solid #eee;
        }
        
        .faq-question {
            font-weight: 600;
            color: #2c5aa0;
            margin-bottom: 10px;
            font-size: 18px;
        }
        
        .faq-answer {
            color: #555;
        }
        
        .hot-topics {
            text-align: center;
            margin: 40px 0;
        }
        
        .hot-topics h2 {
            text-align: center;
            border-bottom: none;
            margin-bottom: 30px;
        }
        
        .topic-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
        }
        
        .topic-button {
            display: inline-block;
            padding: 12px 24px;
            background-color: #2c5aa0;
            color: white;
            text-decoration: none;
            border-radius: 4px;
            font-weight: 600;
            transition: background-color 0.3s;
            min-width: 200px;
            text-align: center;
        }
        
        .topic-button:hover {
            background-color: #1e3d6f;
        }
        
        footer {
            text-align: center;
            padding: 30px 0;
            margin-top: 40px;
            border-top: 1px solid #eaeaea;
            color: #666;
            font-size: 14px;
        }
        
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        
        .comparison-table th, .comparison-table td {
            border: 1px solid #ddd;
            padding: 12px;
            text-align: left;
        }
        
        .comparison-table th {
            background-color: #f2f6ff;
            color: #2c5aa0;
        }
        
        .comparison-table tr:nth-child(even) {
            background-color: #f9f9f9;
        }
        
        @media (max-width: 768px) {
            .topic-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .topic-button {
                width: 100%;
                max-width: 300px;
            }
            
            .country-section, .faq-section {
                padding: 20px;
            }
            
            .info-grid {
                grid-template-columns: 1fr;
            }
            
            .nav {
                flex-direction: column;
            }
            
            .nav a {
                text-align: center;
            }
        }