body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
}

header {
    background-color: #000;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
}

h1 {
    margin: 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

main {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-top: 2rem;
    margin-bottom: 2rem;
}

h2 {
    border-bottom: 2px solid #000;
    padding-bottom: 0.5rem;
    margin-top: 0;
}

h3 {
    margin-top: 2rem;
    color: #444;
}

ul {
    padding-left: 20px;
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: #666;
    font-size: 0.9rem;
}