:root {
  --bg: #f4f5fa;
  --card: #ffffff;
  --text: #141824;
  --muted: #5d6475;
  --line: #e2e5ee;
  --accent: #4f46e5;
  --accent-soft: #eef0ff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0f16;
    --card: #161b25;
    --text: #e8eaf0;
    --muted: #9aa2b4;
    --line: #2a3242;
    --accent: #8b8cf8;
    --accent-soft: #23264a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  padding: 32px 16px 64px;
}
main { max-width: 760px; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 32px clamp(18px, 5vw, 44px); }
header.top { max-width: 760px; margin: 0 auto 16px; display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 14px; }
header.top a.brand { font-weight: 700; color: var(--text); text-decoration: none; }
nav.lang a, nav.pages a { margin-left: 12px; }
a { color: var(--accent); }
h1 { font-size: clamp(26px, 5vw, 34px); line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
h3 { font-size: 17px; margin: 20px 0 6px; }
p, li { max-width: 68ch; }
.meta { color: var(--muted); font-size: 14px; margin: 0 0 24px; }
.summary { background: var(--accent-soft); border-radius: 12px; padding: 14px 18px; margin: 20px 0; }
ul { padding-left: 1.2em; }
footer { max-width: 760px; margin: 20px auto 0; color: var(--muted); font-size: 13px; text-align: center; }
footer a { margin: 0 6px; }
.apps { display: grid; gap: 12px; }
.app { border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; }