:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --text: #1c1c1e;
  --muted: #6e6e73;
  --link: #0a66d8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --text: #f2f2f7;
    --muted: #98989f;
    --link: #4da3ff;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    17px/1.55 -apple-system,
    BlinkMacSystemFont,
    'Inter',
    system-ui,
    sans-serif;
}

main,
footer {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 16px;
}

main {
  padding-top: 48px;
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 8px;
}

h2 {
  font-size: 1.25rem;
  margin: 36px 0 8px;
}

h3 {
  font-size: 1rem;
  margin: 20px 0 4px;
}

p {
  margin: 0 0 12px;
}

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

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

footer {
  color: var(--muted);
  font-size: 0.875rem;
  padding-top: 48px;
  padding-bottom: 32px;
}