:root {
  color-scheme: dark;
  --bg: #0b0b0b;
  --ink: #f5f5f4;
  --muted: #a3a3a3;
  --line: #2a2a2a;
  --card: #161616;
  --accent: #3dd68c;
  --warn: #f5c451;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

main {
  max-width: 40rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.brand {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
}

h1 {
  margin: 0.75rem 0 0.25rem;
  font-size: 2rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

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

h2 {
  margin: 2rem 0 0.4rem;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

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

ul { padding-left: 1.15rem; }

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

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}

.card {
  margin-top: 1.25rem;
  padding: 1rem 1.1rem;
  border-radius: 16px;
  background: var(--card);
  border: 1px solid var(--line);
}