:root {
  --bg: #fafaf7;
  --fg: #1c1c1a;
  --muted: #55554f;
  --link: #1d4ed8;
  --rule: #dcdcd4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161614;
    --fg: #ecece6;
    --muted: #b4b4ac;
    --link: #93b4ff;
    --rule: #34342f;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 400 clamp(1rem, 0.95rem + 0.25vw, 1.0625rem) / 1.6
    system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 4rem) 1rem 3rem;
}

h1 {
  font-size: clamp(1.75rem, 1.4rem + 1.5vw, 2.25rem);
  line-height: 1.2;
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.125rem;
  margin: 2rem 0 0.5rem;
}

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

ul {
  padding-left: 1.25rem;
}

a {
  color: var(--link);
  text-underline-offset: 0.15em;
}

a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.muted {
  color: var(--muted);
}

footer {
  border-top: 1px solid var(--rule);
  margin-top: 2.5rem;
  padding-top: 1rem;
}

footer a {
  display: inline-block;
  padding: 0.6rem 0;
  min-height: 44px;
  margin-right: 1.25rem;
}