:root {
  --bg: #fbfaf8; --fg: #1a1a1a; --muted: #5c5c5c;
  --rule: #e2ded8; --accent: #6b4de6;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #16161a; --fg: #e8e6e3; --muted: #9b9894; --rule: #2c2c33; --accent: #a48cff; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.65 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 40rem; margin: 0 auto; padding: 4rem 1.5rem 6rem; }
h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 .35rem; letter-spacing: -.01em; }
h2 { font-size: 1.05rem; margin: 2.25rem 0 .6rem; letter-spacing: -.005em; }
.sub { color: var(--muted); margin: 0 0 2.5rem; font-size: .95rem; }
p, li { color: var(--fg); }
ul { padding-left: 1.15rem; }
li { margin: .3rem 0; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .875em;
  background: color-mix(in srgb, var(--fg) 7%, transparent); padding: .12em .38em; border-radius: 4px; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
footer { margin-top: 3.5rem; padding-top: 1.25rem; border-top: 1px solid var(--rule);
  color: var(--muted); font-size: .875rem; }
nav a { margin-right: 1.1rem; }