:root {
  --bg: #f6f4ef;
  --fg: #1d1b18;
  --muted: #6b665d;
  --card: #ffffff;
  --line: #e4e0d6;
  --x: #e2553f;
  --o: #2f6fdb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141310;
    --fg: #f1eee7;
    --muted: #a39d92;
    --card: #1e1c18;
    --line: #2f2c26;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
header img { width: 64px; height: 64px; border-radius: 15px; }
header a { color: inherit; text-decoration: none; }
h1 { font-size: 28px; line-height: 1.2; margin: 0; }
h2 { font-size: 20px; margin: 32px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--o); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 24px;
  margin: 16px 0;
}
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 24px; }
.lang { display: flex; gap: 8px; margin-bottom: 8px; }
.lang a { font-size: 14px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
footer { margin-top: 48px; font-size: 14px; color: var(--muted); }