:root {
    color-scheme: light dark;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
    background: #ffffff;
    color: #18212b;
}
* { box-sizing: border-box; }
body { margin: 0; }
main { max-width: 820px; margin: 0 auto; padding: 40px 24px 64px; }
h1, h2 { line-height: 1.25; }
h1 { margin-bottom: 12px; font-size: 2rem; }
h2 { margin-top: 36px; font-size: 1.35rem; }
p, li { overflow-wrap: anywhere; }
li + li { margin-top: 8px; }
a { color: #0757b8; }
.updated, .subtitle { color: #4b5a6a; margin-top: 0; }
footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid #ccd3dc; }
@media (prefers-color-scheme: dark) {
    :root { background: #101820; color: #edf2f7; }
    a { color: #8bc8ff; }
    .updated, .subtitle { color: #b5c1ce; }
    footer { border-color: #42505f; }
}