body {
    font-family: ui-monospace, "Cascadia Code", "Consolas", "Source Code Pro", monospace;
    font-size: 14px;
    max-width: 80ch;
    margin: 2rem auto;
    padding: 0 1rem;
    color: #222;
    line-height: 1.6;
}

h1 {
    font-size: 1.5rem;
}

h2 {
    font-size: 1rem;
    margin-top: 1.5rem;
}

.subtitle {
    color: #666;
    font-style: italic;
}

nav {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
}