:root {
  --ink: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #2563eb;
  --bg: #ffffff;
  --panel: #f9fafb;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

header.site {
  border-bottom: 1px solid var(--line);
  padding: 1.25rem 0;
}

header.site .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-weight: 650;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.25rem;
  font-size: 0.95rem;
}

nav a:hover {
  color: var(--accent);
}

main {
  padding: 3rem 0 4rem;
}

h1 {
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.2rem;
  margin: 2.5rem 0 0.75rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1rem;
  margin: 1.75rem 0 0.5rem;
}

p,
li {
  color: #374151;
}

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

.note {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: 1rem 1.25rem;
  margin: 2rem 0;
}

.note p:last-child {
  margin-bottom: 0;
}

.note p:first-child {
  margin-top: 0;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin: 0.4rem 0;
}

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

.updated {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2rem;
}

footer.site {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer.site a {
  color: var(--muted);
  margin-right: 1.25rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f3f4f6;
    --muted: #9ca3af;
    --line: #374151;
    --accent: #60a5fa;
    --bg: #111827;
    --panel: #1f2937;
  }

  p,
  li {
    color: #d1d5db;
  }
}