:root{
  --bg:#ffffff;--bg-soft:#f6f6f9;--fg:#1c1c24;--muted:#5f6070;--border:#e2e2ea;--accent:#4f46e5;--accent-fg:#fff;--code-bg:#f3f3f8;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme=light]){--bg:#14141b;--bg-soft:#1b1b25;--fg:#ececf3;--muted:#a0a1b3;--border:#2c2c3a;--accent:#8b84ff;--accent-fg:#14141b;--code-bg:#1f1f2b;color-scheme:dark}
}
:root[data-theme=dark]{--bg:#14141b;--bg-soft:#1b1b25;--fg:#ececf3;--muted:#a0a1b3;--border:#2c2c3a;--accent:#8b84ff;--accent-fg:#14141b;--code-bg:#1f1f2b;color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
header.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:16px;padding:12px 24px;background:var(--bg);border-bottom:1px solid var(--border)}
header.top strong{font-size:1rem}
header.top nav{margin-left:auto;display:flex;gap:16px;align-items:center}
header.top nav a{color:var(--muted);text-decoration:none;font-size:.9rem}
header.top nav a:hover{color:var(--fg)}
.layout{display:grid;grid-template-columns:240px minmax(0,1fr);max-width:1180px;margin:0 auto;gap:40px;padding:0 24px}
aside.side{position:sticky;top:72px;align-self:start;max-height:calc(100vh - 88px);overflow:auto;padding:24px 0}
aside.side a{display:block;padding:4px 0;color:var(--muted);text-decoration:none;font-size:.92rem}
aside.side a:hover,aside.side a.active{color:var(--accent)}
aside.side .group{margin:16px 0 4px;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
main{padding:32px 0 96px;min-width:0}
main h1{font-size:2.2rem;line-height:1.2;margin:0 0 8px}
main h2{margin:56px 0 12px;padding-top:8px;border-top:1px solid var(--border);font-size:1.5rem}
main h3{margin:28px 0 8px;font-size:1.1rem}
.lead{font-size:1.15rem;color:var(--muted);max-width:60ch}
code{font:.88em ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--code-bg);padding:.1em .35em;border-radius:4px}
pre{background:var(--code-bg);border:1px solid var(--border);border-radius:8px;padding:14px 16px;overflow:auto;line-height:1.5}
pre code{background:none;padding:0;font-size:.85rem}
table{border-collapse:collapse;width:100%;font-size:.92rem;display:block;overflow-x:auto}
th,td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--border);vertical-align:top}
th{color:var(--muted);font-weight:600;white-space:nowrap}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}
.btn{display:inline-block;padding:10px 18px;border-radius:8px;text-decoration:none;font-weight:600;background:var(--accent);color:var(--accent-fg)}
.btn.alt{background:none;color:var(--fg);border:1px solid var(--border)}
.note{border-left:4px solid var(--accent);background:var(--bg-soft);padding:10px 16px;border-radius:0 8px 8px 0;margin:16px 0}
.note.warn{border-left-color:#d97706}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:24px 0}
.card{background:var(--bg-soft);border:1px solid var(--border);border-radius:10px;padding:16px}
.card h3{margin:0 0 6px}
.card p{margin:0;color:var(--muted);font-size:.92rem}
@media (max-width:820px){.layout{grid-template-columns:1fr}aside.side{position:static;max-height:none;padding:12px 0;border-bottom:1px solid var(--border)}}