:root {
  --bg: #f7f7fb;
  --card: #ffffff;
  --text: #1d1d2b;
  --muted: #5d5d73;
  --line: #e3e3ee;
  --accent: #e8453c;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12121a;
    --card: #1b1b26;
    --text: #ececf4;
    --muted: #a3a3b8;
    --line: #2c2c3a;
    --accent: #ff6b5f;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header.site { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 32px; }
header.site a.brand { color: var(--text); font-weight: 700; font-size: 18px; text-decoration: none; }
a { color: var(--accent); }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 32px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin: 16px 0; }
.lang { display: flex; gap: 8px; }
.lang a { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; text-decoration: none; color: var(--text); font-size: 14px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
ul { padding-left: 22px; }
footer { margin-top: 48px; color: var(--muted); font-size: 14px; }