:root {
  --ink: #18181b;
  --muted: #52525b;
  --line: #e4e4e7;
  --bg: #ffffff;
  --accent: #4f46e5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f4f4f5;
    --muted: #a1a1aa;
    --line: #303036;
    --bg: #131316;
    --accent: #8b85f0;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
  max-width: 42rem;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  margin: 2.5rem 0 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

h3 {
  font-size: 1rem;
  margin: 1.75rem 0 0.4rem;
}

p,
li {
  color: var(--ink);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin: 0.35rem 0;
}

.lede {
  font-size: 1.1rem;
  color: var(--muted);
  margin: 0 0 2rem;
}

.updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2.5rem;
}

.back {
  display: inline-block;
  margin-bottom: 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}

.back:hover {
  color: var(--accent);
}

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

footer a {
  color: var(--muted);
}