:root {
  --bg: #f6f1e8;
  --ink: #2c2416;
  --muted: #6b6256;
  --line: #e4d9c8;
  --link: #3d4f7c;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Segoe UI", sans-serif;
}

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

header h1 {
  font-size: 1.6rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 0 0 0.25rem;
}

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

nav a {
  color: var(--link);
  text-decoration: none;
  margin-right: 1rem;
}

nav a:hover { text-decoration: underline; }

h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.6rem;
}

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

ul { padding-left: 1.2rem; }

.lang {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

footer {
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.85rem;
}