:root {
  --paper: #f7f3ea;
  --ink: #1d2433;
  --muted: #5b6475;
  --line: #ddd5c4;
  --red: #c8102e;
  --blue: #00205b;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14181f;
    --ink: #eef0f4;
    --muted: #a3abb9;
    --line: #2b313c;
    --red: #ff5a6e;
    --blue: #8fb0ff;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 680px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
header img { width: 48px; height: 48px; border-radius: 12px; }
h1 { font-size: 28px; margin: 0; }
h2 { font-size: 21px; margin: 32px 0 8px; }
p { margin: 0 0 14px; }
a { color: var(--blue); }
nav { margin: 8px 0 24px; color: var(--muted); }
.lang { border-top: 1px solid var(--line); margin-top: 36px; padding-top: 4px; }
.muted { color: var(--muted); font-size: 15px; }