/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fafafa;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* Header styles */
header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
}

header h1 {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 20px;
    color: #2c3e50;
}

header h1 a {
    text-decoration: none;
    color: inherit;
}

header h1 a:hover {
    color: #3498db;
}

/* Navigation styles */
nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: #666;
    font-weight: 400;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

nav a:hover {
    color: #3498db;
    background-color: #f8f9fa;
}

nav a.current {
    color: #3498db;
    background-color: #f0f8ff;
}

/* Main content styles */
main {
    padding: 20px 0;
}

article {
    max-width: 600px;
    margin: 0 auto;
}

article h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
    font-weight: 400;
}

article p {
    margin-bottom: 16px;
    font-size: 1rem;
    line-height: 1.7;
}

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

article a:hover {
    text-decoration: underline;
}

/* Responsive design */
@media (max-width: 600px) {
    body {
        padding: 15px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    nav ul {
        flex-direction: column;
        gap: 15px;
    }
    
    nav a {
        display: block;
        text-align: center;
    }
}