:root {
  --bg: #ffffff;
  --fg: #172033;
  --muted: #55627a;
  --card: #f4f6fa;
  --border: #dde3ec;
  --accent: #2563eb;
  --accent-fg: #ffffff;
  --linux: #f4b942;
  --code: #eef1f6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1724;
    --fg: #e6ecf5;
    --muted: #9aa8bd;
    --card: #172235;
    --border: #26344b;
    --accent: #5b9bff;
    --accent-fg: #0f1724;
    --code: #1c2a40;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", "Noto Sans", Roboto, sans-serif;
}
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header.top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; padding: 16px 0; gap: 8px 16px; }
header.top a { color: var(--muted); text-decoration: none; font-size: 15px; }
header.top nav { display: flex; gap: 16px; flex-wrap: wrap; }
.brand { font-weight: 800; font-size: 20px; color: var(--fg) !important; }
.hero { padding: 48px 0 32px; }
.badges { display: flex; gap: 8px; margin-bottom: 20px; }
.badge { padding: 4px 14px; border-radius: 8px; font-weight: 700; font-size: 14px; }
.badge.l { background: var(--linux); color: #1b1b1b; }
.badge.w { background: #3b82f6; color: #fff; }
h1 { font-size: clamp(34px, 6vw, 54px); line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; }
.lead { font-size: 20px; color: var(--muted); max-width: 720px; margin: 0 0 28px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 10px; font-weight: 600; text-decoration: none; }
.btn.primary { background: var(--accent); color: var(--accent-fg); }
.btn.ghost { border: 1px solid var(--border); color: var(--fg); }
section { padding: 32px 0; border-top: 1px solid var(--border); }
h2 { font-size: 28px; margin: 0 0 16px; }
h3 { font-size: 19px; margin: 0 0 6px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
pre { background: var(--code); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; overflow-x: auto; font-size: 15px; }
code { font-family: ui-monospace, "JetBrains Mono", "Noto Sans Mono", monospace; }
ol.steps { padding-left: 22px; }
ol.steps li { margin-bottom: 8px; overflow-wrap: anywhere; }
table { border-collapse: collapse; width: 100%; font-size: 16px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table-scroll { overflow-x: auto; }
details { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 10px 0 0; color: var(--muted); }
.warn { background: var(--card); border-left: 4px solid var(--linux); padding: 12px 16px; border-radius: 6px; }
footer { padding: 32px 0 48px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--border); }
footer a { color: var(--muted); }
a { color: var(--accent); }
@media (max-width: 560px) {
  header.top { flex-direction: column; align-items: flex-start; }
  .lead { font-size: 18px; }
}
main.article { padding: 32px 0; max-width: 780px; }
main.article h1 { font-size: clamp(30px, 5vw, 42px); }
main.article h2 { font-size: 24px; margin: 32px 0 12px; }
main.article ul, main.article ol { padding-left: 22px; }
main.article li { margin-bottom: 6px; }
main.article section { margin-top: 32px; }
.card h3 a { color: var(--fg); text-decoration: none; }
.card h3 a:hover { text-decoration: underline; }