body {
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    margin: 2rem;
}

.card {
    max-width: 720px;
    padding: 1.25rem 1.5rem;
    border: 1px solid #ddd;
    border-radius: 12px;
}

code {
    background: #f5f5f5;
    padding: 0.1rem 0.35rem;
    border-radius: 6px;
}

small {
    color: #666;
}