:root {
  color-scheme: light;
  --ink: #1a1a1a;
  --muted: #5a5a5a;
  --bg: #fafafa;
  --line: #e2e2e2;
  --accent: #2b6b4f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

header {
  border-bottom: 1px solid var(--line);
  padding: 24px 20px;
}

header .wrap {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.01em;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  margin-left: 20px;
}

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

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5em;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.2rem;
  margin-top: 2em;
  margin-bottom: 0.5em;
}

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

.lede {
  color: var(--muted);
  font-size: 1.05rem;
}

.updated {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 2em;
}

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--line);
}

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

.placeholder {
  background: #fff3cd;
  border: 1px solid #ffe08a;
  padding: 2px 6px;
  border-radius: 3px;
  font-family: ui-monospace, monospace;
  font-size: 0.9em;
}

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