:root{
  --bg:#f6f6f3;--card:#fff;--fg:#1c1d1f;--muted:#5d6168;--line:#e3e3de;
  --accent:#5546c2;--accent-soft:#eeecfa;--chip:#f0f0ec;--chip-fg:#4a4d53;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#111214;--card:#18191c;--fg:#e8e8ea;--muted:#a1a4aa;--line:#2a2c31;
    --accent:#a9a0f2;--accent-soft:#25223d;--chip:#24262a;--chip-fg:#c3c5ca;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow-wrap:break-word}
a{color:var(--accent)}
a:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}
.wrap{max-width:880px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:12px;background:var(--card);padding:6px 10px;border-radius:6px;z-index:1}

header{border-bottom:1px solid var(--line);background:var(--card)}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none;font-weight:650;font-size:1.06rem;letter-spacing:-.01em}
.brand img{width:28px;height:28px;flex:none}
nav{display:flex;gap:20px}
nav a{color:var(--muted);text-decoration:none;font-size:.95rem;padding:6px 0}
nav a:hover,nav a[aria-current="page"]{color:var(--fg)}
nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--accent)}

main{padding:56px 0 72px}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:4px 10px;border-radius:999px}
h1{font-size:clamp(1.85rem,4.6vw,2.55rem);line-height:1.15;letter-spacing:-.025em;margin:18px 0 14px;max-width:20ch}
.lead{font-size:1.12rem;color:var(--muted);max-width:60ch;margin:0}
section{margin-top:56px}
h2{font-size:1.3rem;letter-spacing:-.015em;margin:0 0 6px}
.sub{color:var(--muted);margin:0 0 20px;max-width:64ch}
p{margin:0 0 12px}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:14px;counter-reset:s}
.steps li{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;counter-increment:s;color:var(--muted);font-size:.96rem}
.steps li::before{content:counter(s);display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--accent-soft);color:var(--accent);font-weight:650;font-size:.85rem;margin-bottom:10px}
.steps strong{color:var(--fg);display:block;margin-bottom:2px}

.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px}
.card h3{font-size:1.04rem;margin:0;letter-spacing:-.01em}
.card p{color:var(--muted);font-size:.96rem;margin:8px 0 0}
.card ul{margin:10px 0 0;padding-left:20px;color:var(--muted);font-size:.96rem}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.current{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:14px}
.future .card{background:transparent;border-style:dashed}
.subhead{font-size:1rem;margin:30px 0 12px}

.chip{display:inline-block;font-size:.76rem;font-weight:600;letter-spacing:.02em;padding:3px 9px;border-radius:999px;white-space:nowrap}
.chip-on{background:var(--accent-soft);color:var(--accent)}
.chip-off{background:var(--chip);color:var(--chip-fg)}

.note{border-left:3px solid var(--accent);background:var(--card);border-radius:0 10px 10px 0;padding:14px 18px;margin:16px 0 0;color:var(--muted);font-size:.96rem}
.note strong{color:var(--fg)}
.checks{margin:0;padding-left:20px}
.checks li{margin:0 0 8px}

code{font:.86em ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--accent-soft);color:var(--fg);padding:2px 6px;border-radius:5px;overflow-wrap:anywhere}
.scope{display:block;padding:12px 14px;margin:4px 0 14px;font-size:.9em}
.compare{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:14px;margin-top:16px}
.compare .card h3{font-size:.98rem}

.doc{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:clamp(20px,5vw,44px);max-width:760px}
.doc h1{margin-top:0;max-width:none}
.doc .meta{color:var(--muted);font-size:.92rem;margin:0 0 24px}
.doc h2{font-size:1.15rem;margin:36px 0 10px;padding-top:4px}
.doc h3{font-size:1rem;margin:22px 0 6px}
.doc ul{padding-left:22px;margin:0 0 12px}
.doc li{margin:0 0 6px}
.doc .summary{background:var(--accent-soft);border-radius:12px;padding:16px 20px;margin:0 0 8px}
.doc .summary ul{margin:8px 0 0}
.doc .summary h2{margin:0;font-size:1rem}
.toc{columns:2 220px;column-gap:24px;padding-left:20px;margin:0 0 8px;font-size:.95rem}
.toc li{break-inside:avoid}
dl.data{margin:0 0 12px}
dl.data dt{font-weight:600;margin-top:10px}
dl.data dd{margin:2px 0 0;color:var(--muted)}

footer{border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
footer .wrap{padding-top:24px;padding-bottom:32px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
footer a{color:var(--muted)}
footer p{margin:0;max-width:60ch}

@media (max-width:520px){
  main{padding:36px 0 56px}
  section{margin-top:44px}
  nav{gap:16px}
  .doc{padding:22px 16px;border-radius:12px}
  .doc .summary{padding:14px 16px}
  .doc ul,.summary ul{padding-left:18px}
}