:root {
  --ink: #2c2a26;
  --cream: #faf7f2;
  --pine: #1f3d2e;
  --amber: #c98a3c;
  --line: #e5ded2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  line-height: 1.6;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

header {
  border-bottom: 2px solid var(--pine);
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

header .brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--pine);
  letter-spacing: 0.02em;
}

h1 {
  font-size: 1.6rem;
  margin: 0 0 0.25rem;
}

.updated {
  color: #6b6558;
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

h2 {
  font-size: 1.1rem;
  color: var(--pine);
  margin-top: 2rem;
}

ul { padding-left: 1.2rem; }

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

.lang-switch {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.index-links {
  list-style: none;
  padding: 0;
  display: flex;
  gap: 1rem;
}

.index-links a {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--pine);
  border-radius: 6px;
  color: var(--pine);
  text-decoration: none;
  font-weight: 600;
}