:root {
  color-scheme: light dark;
  --bg: #fbfbfd;
  --fg: #1d1d1f;
  --muted: #6e6e73;
  --rule: #e3e3e6;
  --accent: #2c6bb3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161618;
    --fg: #ececf0;
    --muted: #9a9aa2;
    --rule: #2c2c30;
    --accent: #7fb0e8;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 4rem 1.25rem 6rem;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

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

h1 { font-size: 1.9rem; line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 0.4rem; }
h2 { font-size: 1.15rem; margin: 2.4rem 0 0.6rem; letter-spacing: -0.01em; }

.lead { color: var(--muted); font-size: 1.05rem; margin: 0 0 2.5rem; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

ul { padding-left: 1.2rem; }
li { margin: 0.35rem 0; }

dl { margin: 0.6rem 0 0; }
dt { font-weight: 600; margin-top: 0.9rem; }
dd { margin: 0.15rem 0 0; color: var(--muted); }

code {
  font: 0.875em ui-monospace, SFMono-Regular, Menlo, monospace;
  background: color-mix(in srgb, var(--fg) 7%, transparent);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

footer {
  margin-top: 3.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.875rem;
}

footer a { color: inherit; }