* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

h1 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5rem;
    color: #2c3e50;
}

.article-links {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.article-links a {
    text-decoration: none;
    color: #3498db;
    font-size: 1.1rem;
    padding: 12px 0;
    border-bottom: 1px solid #ecf0f1;
    transition: color 0.3s ease;
}

.article-links a:hover {
    color: #2980b9;
}

.article-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: left;
}

.article-content h1 {
    margin-bottom: 30px;
    font-size: 2.2rem;
}

.article-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
}

.article-content h2 {
    font-size: 1.5rem;
    margin-top: 30px;
    margin-bottom: 15px;
    color: #2c3e50;
}

.article-content h3 {
    font-size: 1.3rem;
    margin-top: 25px;
    margin-bottom: 12px;
    color: #34495e;
}

.article-content a {
    color: #3498db;
    text-decoration: none;
}

.article-content a:hover {
    color: #2980b9;
    text-decoration: underline;
}

.back-link {
    display: inline-block;
    margin-top: 30px;
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
}

.back-link:hover {
    color: #2980b9;
}

.article-content p, .article-content a {
    word-break: break-word;
    overflow-wrap: anywhere;
}

@media (max-width: 768px) {
    .container {
        padding: 20px 15px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .article-content h1 {
        font-size: 1.8rem;
    }
}