:root {
  --bg: #ffffff;
  --fg: #1c1e21;
  --muted: #5b6169;
  --rule: #e3e6ea;
  --link: #1a4fa0;
  --link-hover: #12376f;
  --measure: 38rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181b;
    --fg: #e6e8ea;
    --muted: #a2a9b2;
    --rule: #2c3035;
    --link: #7fb0f5;
    --link-hover: #a8c8f8;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 3rem 1.5rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

.page {
  max-width: var(--measure);
  margin: 0 auto;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

h2 {
  margin: 2.25rem 0 0.5rem;
  font-size: 1.0625rem;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

p {
  margin: 0 0 1.15rem;
}

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

a:hover,
a:focus {
  color: var(--link-hover);
}

.tagline {
  margin: 0 0 2rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.updated {
  margin: 0 0 2rem;
  color: var(--muted);
  font-size: 0.875rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9375rem;
}

footer p {
  margin: 0;
}

@media (max-width: 30rem) {
  body {
    padding: 2rem 1.25rem 3rem;
  }

  h1 {
    font-size: 1.5rem;
  }
}