:root {
  color-scheme: light;
  --ink: #1b1b1b;
  --muted: #444;
  --bg: #f6f3ea;
  --card: #fff;
  --accent: #c9a227;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}
header, main, footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px;
}
header h1 {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1.8rem;
  margin: 0 0 8px;
}
.lang {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.9rem;
}
a { color: #0b5cab; }
.card {
  background: var(--card);
  border: 2px solid #111;
  border-radius: 12px;
  padding: 20px 22px;
}
h2 { font-size: 1.2rem; margin-top: 1.4em; }
footer {
  color: var(--muted);
  font-size: 0.9rem;
}
code { background: #eee; padding: 0 4px; border-radius: 4px; }