:root {
  --bg: #fbfaf7;
  --text: #1f2421;
  --muted: #5d6661;
  --rule: #e3e0d8;
  --accent: #2f5d50;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151816;
    --text: #e4e7e4;
    --muted: #9aa39e;
    --rule: #2b302d;
    --accent: #8cc4b2;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 1.0625rem/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 36rem;
  margin: 0 auto;
  padding: 4.5rem 1rem 5rem;
}

header {
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--rule);
}

h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.lede {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

section {
  margin-top: 2.25rem;
}

h2 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 650;
}

p, ul { margin: 0 0 0.85rem; }

ul { padding-left: 1.2rem; }

li { margin-bottom: 0.2rem; }

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
}

a:hover { text-decoration-thickness: 2px; }

@media (min-width: 40rem) {
  main { padding-top: 6rem; }
}