body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.8;
    color: #333;
    background: #f5f5f5;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    padding: 60px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #667eea;
    font-size: 36px;
    margin-bottom: 10px;
    border-bottom: 3px solid #667eea;
    padding-bottom: 15px;
}

h2 {
    color: #333;
    font-size: 28px;
    margin-top: 40px;
    margin-bottom: 15px;
}

h3 {
    color: #555;
    font-size: 20px;
    margin-top: 30px;
    margin-bottom: 10px;
}

.meta {
    color: #666;
    font-size: 14px;
    margin-bottom: 30px;
}

.back-link {
    display: inline-block;
    color: #667eea;
    text-decoration: none;
    margin-bottom: 30px;
    font-weight: 600;
}

.back-link:hover {
    text-decoration: underline;
}

p {
    margin-bottom: 15px;
    color: #444;
}

ul, ol {
    margin: 15px 0;
    padding-left: 30px;
}

li {
    margin-bottom: 8px;
}

a {
    color: #667eea;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

strong {
    color: #333;
    font-weight: 600;
}

code {
    background: #f0f0f0;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

@media (max-width: 768px) {
    .container {
        padding: 30px 20px;
    }

    h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 22px;
    }

    h3 {
        font-size: 18px;
    }
}