:root {
  --bg: #ffffff;
  --fg: #1b1b1b;
  --muted: #5c5c5c;
  --rule: #e3e3e3;
  --link: #1a4fb4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181c;
    --fg: #e8e8e8;
    --muted: #a0a0a0;
    --rule: #2e3238;
    --link: #7ba7f5;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 3rem 1.25rem 5rem;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

h1 {
  font-size: 1.75rem;
  line-height: 1.25;
  margin: 0 0 .35rem;
  letter-spacing: -.01em;
}

h2 {
  font-size: 1.1rem;
  margin: 2.25rem 0 .6rem;
  letter-spacing: -.005em;
}

p, li { margin: 0 0 1rem; }

ul { padding-left: 1.15rem; }

.lede {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

.updated {
  color: var(--muted);
  font-size: .9rem;
  margin-bottom: 2.5rem;
}

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

footer {
  margin-top: 3.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: .9rem;
}

footer p { margin: 0 0 .4rem; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .9em;
  background: var(--rule);
  padding: .1em .35em;
  border-radius: 3px;
}