:root{
  color-scheme: light;
  --bg:#fbfaf8; --surface:#fff; --ink:#1a1d22; --ink-2:#4c5561; --ink-3:#7d8794;
  --line:#e3e0da; --accent:#1f6f5c;
}
@media (prefers-color-scheme: dark){
  :root{--bg:#12141a; --surface:#181b22; --ink:#e8eaee; --ink-2:#a8b0bb;
        --ink-3:#7a828d; --line:#2a2f38; --accent:#4fc0a1; color-scheme: dark;}
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  -webkit-font-smoothing:antialiased}
main{max-width:46rem;margin:0 auto;padding:3rem 1.25rem 5rem}
h1{font-size:clamp(1.6rem,4vw,2.1rem);line-height:1.2;margin:0 0 .4rem;letter-spacing:-.02em}
h2{font-size:1.15rem;margin:2.4rem 0 .7rem;letter-spacing:-.01em}
h3{font-size:1rem;margin:1.6rem 0 .4rem;color:var(--ink-2)}
p,li{color:var(--ink-2)}
li{margin-bottom:.35rem}
a{color:var(--accent)}
.meta{color:var(--ink-3);font-size:.875rem;margin:0 0 2rem;padding-bottom:1.5rem;
  border-bottom:1px solid var(--line)}
table{width:100%;border-collapse:collapse;margin:.8rem 0;font-size:.9rem;display:block;overflow-x:auto}
th,td{text-align:left;padding:.55rem .7rem;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--ink);font-weight:600;white-space:nowrap}
td{color:var(--ink-2)}
.box{background:var(--surface);border:1px solid var(--line);border-radius:10px;
  padding:1rem 1.15rem;margin:1.2rem 0}
.box p:last-child{margin-bottom:0}
.box p:first-child{margin-top:0}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.875em;
  background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:.1em .35em}
footer{margin-top:3.5rem;padding-top:1.5rem;border-top:1px solid var(--line);
  color:var(--ink-3);font-size:.85rem}

/* seletor de idioma — cada link vai para a MESMA página no outro idioma */
.lang{display:flex;gap:2px;justify-content:flex-end;margin:0 0 1.5rem;
  font-size:.75rem;letter-spacing:.06em;font-weight:600}
.lang a,.lang span{padding:.3rem .6rem;border-radius:5px;text-decoration:none}
.lang a{color:var(--ink-3)}
.lang a:hover{color:var(--ink);background:var(--surface)}
.lang span[aria-current]{color:var(--ink);background:var(--surface);
  border:1px solid var(--line)}