:root {
  --bg: #fff4ec;
  --surface: #ffffff;
  --text: #4a3b36;
  --muted: #9a8780;
  --accent: #c8573a;
  --line: #f3dccd;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161618;
    --surface: #222225;
    --text: #f1eff2;
    --muted: #a7a4ad;
    --accent: #f59b7e;
    --line: #34333a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", "Hiragino Sans", "PingFang SC", sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 64px; }
header { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: baseline; justify-content: space-between; }
header a.home { color: var(--muted); text-decoration: none; font-weight: 600; }
nav.langs { display: flex; flex-wrap: wrap; gap: 4px; }
nav.langs button {
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
  border-radius: 999px; padding: 2px 10px; font: inherit; font-size: 14px; cursor: pointer;
}
nav.langs button[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
h1 { font-size: 28px; line-height: 1.25; margin: 24px 0 4px; }
h2 { font-size: 19px; margin: 28px 0 6px; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 16px 20px; margin: 16px 0; }
a { color: var(--accent); }
ul { padding-left: 20px; }
footer { color: var(--muted); font-size: 14px; margin-top: 48px; }
/* Without JavaScript every language shows; lang.js keeps the chosen one. */
.js section[lang]:not(.shown) { display: none; }