:root {
    color-scheme: light dark;
    --text: #1c1c1e;
    --muted: #6c6c70;
    --accent: #0a84ff;
    --rule: #e5e5ea;
    --bg: #ffffff;
}

@media (prefers-color-scheme: dark) {
    :root {
        --text: #f2f2f7;
        --muted: #98989d;
        --rule: #2c2c2e;
        --bg: #1c1c1e;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0 auto;
    padding: 3rem 1.25rem 5rem;
    max-width: 42rem;
    background: var(--bg);
    color: var(--text);
    font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-text-size-adjust: 100%;
}

header { margin-bottom: 2.5rem; }

h1 {
    margin: 0 0 .25rem;
    font-size: 2rem;
    letter-spacing: -0.02em;
}

h2 {
    margin: 2.5rem 0 .75rem;
    font-size: 1.2rem;
    letter-spacing: -0.01em;
}

.tagline, .updated {
    margin: 0;
    color: var(--muted);
    font-size: .95rem;
}

a { color: var(--accent); }

ul { padding-left: 1.25rem; }

li { margin-bottom: .4rem; }

dt {
    margin-top: 1.25rem;
    font-weight: 600;
}

dd {
    margin: .35rem 0 0;
    color: var(--muted);
}

footer {
    margin-top: 4rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--rule);
    color: var(--muted);
    font-size: .9rem;
}