:root{
  --bg:#0B0F17; --surface:#151B26; --border:#232C3A;
  --t1:#EEF2F8; --t2:#94A3B8; --t3:#64748B; --brand:#00C2AA; --ai:#A78BFA;
}
:root[data-theme="light"]{
  --bg:#F6F7FA; --surface:#FFFFFF; --border:#E1E6EE;
  --t1:#0F172A; --t2:#51607A; --t3:#7C8AA0; --brand:#0D9488; --ai:#7C3AED;
}
@media (prefers-color-scheme:light){
  :root:not([data-theme="dark"]){
    --bg:#F6F7FA; --surface:#FFFFFF; --border:#E1E6EE;
    --t1:#0F172A; --t2:#51607A; --t3:#7C8AA0; --brand:#0D9488; --ai:#7C3AED;
  }
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{
  background:var(--bg); color:var(--t2);
  font-family:'Inter',system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.7; font-size:15px; -webkit-font-smoothing:antialiased;
  padding:0 22px 90px;
}
.wrap{max-width:68ch;margin:0 auto}
header{display:flex;align-items:center;gap:11px;padding:30px 0 40px}
header a{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--t1)}
header b{font-family:'Outfit','Inter',sans-serif;font-weight:700;font-size:1.05rem;letter-spacing:-.03em}
.mark{width:26px;height:26px;flex:none}
.mark .r{stroke:var(--brand)} .mark .n{fill:var(--ai)}
h1{font-family:'Outfit','Inter',sans-serif;font-size:2.1rem;font-weight:600;
   letter-spacing:-.035em;color:var(--t1);margin-bottom:8px;text-wrap:balance}
.updated{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.7rem;
   text-transform:uppercase;letter-spacing:.12em;color:var(--t3);margin-bottom:34px}
h2{font-family:'Outfit','Inter',sans-serif;font-size:1.12rem;font-weight:600;
   letter-spacing:-.02em;color:var(--t1);margin:38px 0 12px;text-wrap:balance}
p{margin-bottom:14px}
ul{margin:0 0 16px 20px}
li{margin-bottom:8px}
strong{color:var(--t1);font-weight:600}
a{color:var(--brand)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.86em;
  background:var(--surface);border:1px solid var(--border);border-radius:5px;padding:1px 5px}
.lede{font-size:1.03rem;color:var(--t2);border-left:2px solid var(--brand);
  padding-left:18px;margin-bottom:32px}
.note{background:var(--surface);border:1px solid var(--border);border-radius:12px;
  padding:18px 20px;margin:26px 0;font-size:.9rem}
footer{margin-top:56px;padding-top:24px;border-top:1px solid var(--border);
  font-size:.83rem;color:var(--t3);display:flex;gap:18px;flex-wrap:wrap}