:root {
    color-scheme: light dark;
    --ink: #1c1c1e;
    --ink-dim: #55555c;
    --ground: #ffffff;
    --rule: #e2e2e6;
    --link: #0b62d0;
}

@media (prefers-color-scheme: dark) {
    :root {
        --ink: #f2f2f5;
        --ink-dim: #a1a1a8;
        --ground: #131316;
        --rule: #2c2c31;
        --link: #6aa8ff;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 48px 24px 96px;
    background: var(--ground);
    color: var(--ink);
    font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-text-size-adjust: 100%;
}

main {
    max-width: 42rem;
    margin: 0 auto;
}

nav {
    display: flex;
    gap: 16px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--rule);
    font-size: 15px;
}

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

h1 {
    margin: 40px 0 4px;
    font-size: 30px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h2 {
    margin: 40px 0 8px;
    font-size: 20px;
    line-height: 1.3;
}

h3 {
    margin: 28px 0 6px;
    font-size: 17px;
    line-height: 1.35;
}

p.updated {
    margin: 0 0 32px;
    color: var(--ink-dim);
    font-size: 15px;
}

ul {
    padding-left: 24px;
}

li {
    margin: 6px 0;
}

article + article {
    margin-top: 72px;
    padding-top: 8px;
    border-top: 1px solid var(--rule);
}

footer {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--rule);
    color: var(--ink-dim);
    font-size: 15px;
}