:root{
  --navy:#0B1B3D;--teal:#00A896;--on-teal:#0B1B3D;
  --bg:#F2F6F7;--surface:#FFFFFF;--surface-2:#E7EEF0;--ink:#0B1B3D;--ink-2:#2E3440;--muted:#526072;
  --line:#D2DCE0;--teal-ink:#007A6D;--teal-soft:#DDF3EF;
  --band:#0B1B3D;--band-ink:#EAF2F5;--band-muted:#AFC1CE;--band-accent:#4FD8C4;--band-line:rgba(255,255,255,.14);
  --pend:#9B3A2B;
  --f-display:'Montserrat','Segoe UI',system-ui,sans-serif;
  --f-body:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --f-mono:'IBM Plex Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#081226;--surface:#0F1E3B;--surface-2:#15294C;--ink:#E7EEF4;--ink-2:#C7D3DE;--muted:#93A6B9;
    --line:#233A60;--teal-ink:#45D8C3;--teal-soft:#0D3940;--pend:#F08C7A;color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#081226;--surface:#0F1E3B;--surface-2:#15294C;--ink:#E7EEF4;--ink-2:#C7D3DE;--muted:#93A6B9;
  --line:#233A60;--teal-ink:#45D8C3;--teal-soft:#0D3940;--pend:#F08C7A;color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.65}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-ink)}
a:focus-visible{outline:3px solid var(--teal);outline-offset:2px}
.wrap{max-width:960px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.pend{font-family:var(--f-mono);color:var(--pend);font-size:.88em}
.top{background:var(--band);color:var(--band-ink);border-bottom:1px solid var(--band-line)}
.top .row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--band-ink)}
.brand svg{width:34px;height:34px;flex:0 0 auto}
.brand-name{font-family:var(--f-display);font-weight:800;font-size:1.25rem;letter-spacing:.02em}
.brand-name span{font-weight:500;color:var(--band-accent)}
.back{font-family:var(--f-display);font-weight:700;font-size:.85rem;color:var(--band-ink);text-decoration:none;border:1.5px solid var(--band-line);border-radius:8px;padding:8px 12px;min-height:40px;display:inline-flex;align-items:center}
.back:hover{border-color:var(--band-accent)}
.band{background:var(--band);color:var(--band-ink);padding-block:36px 44px;background-image:radial-gradient(circle at 88% 0%,rgba(0,168,150,.26),transparent 46%)}
.eyebrow{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--band-accent)}
.badge{display:inline-block;margin-left:10px;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;border:1.5px solid var(--band-accent);color:var(--band-accent);border-radius:999px;padding:2px 10px;vertical-align:middle}
h1{font-family:var(--f-display);font-weight:800;font-size:clamp(1.8rem,4.6vw,2.9rem);line-height:1.1;letter-spacing:-.02em;margin:14px 0 12px;text-wrap:balance}
h1 em{font-style:normal;color:var(--band-accent)}
.lead{color:var(--band-muted);font-size:1.05rem;max-width:64ch;margin:0}
.lead b{color:var(--band-ink)}
.doc{padding-block:36px 56px}
h2{font-family:var(--f-display);font-weight:800;font-size:1.3rem;line-height:1.25;margin:36px 0 10px}
h2:first-child{margin-top:0}
h3{font-family:var(--f-display);font-weight:700;font-size:1.05rem;margin:0 0 6px}
.doc p,.doc li{color:var(--ink-2)}
.doc ul{padding-left:20px}
.doc li{margin-bottom:6px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:14px;margin:8px 0 0}
.card{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:12px;padding:18px 20px}
.card .n{font-family:var(--f-mono);font-size:.78rem;color:var(--teal-ink)}
.card p{margin:0}
.plain{margin-top:16px;background:var(--surface);border:1px dashed var(--line);border-radius:12px;padding:14px 18px}
.meta{display:flex;flex-wrap:wrap;gap:8px 28px;margin-top:22px;padding-top:14px;border-top:1px solid var(--line);font-family:var(--f-mono);font-size:.82rem;color:var(--muted)}
.meta b{color:var(--ink);font-weight:500}
.src{font-size:.86rem;color:var(--muted);margin-top:10px;word-break:break-word}
.figure{margin:32px 0 0;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px}
.figure img{border-radius:8px;margin:0 auto}
.figure figcaption{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:.84rem;color:var(--muted);margin-top:10px}
.cta{margin-top:32px;background:var(--teal-soft);border-radius:14px;padding:20px 22px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.cta p{margin:0;color:var(--ink);font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;font-family:var(--f-display);font-weight:700;font-size:.9rem;padding:10px 18px;min-height:44px;border-radius:8px;background:var(--teal);color:var(--on-teal);text-decoration:none}
.btn:hover{background:color-mix(in srgb,var(--teal) 85%,#ffffff)}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:28px}
.toc ol{margin:6px 0 0;padding-left:20px;columns:2;column-gap:28px}
.toc li{margin-bottom:4px;break-inside:avoid}
@media (max-width:640px){.toc ol{columns:1}}
.box{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:12px 0}
.disc{font-size:.84rem;color:var(--muted);margin-top:18px}
.foot{background:var(--band);color:var(--band-muted);font-size:.8rem}
.foot .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding-block:20px;font-family:var(--f-mono);letter-spacing:.03em}
.foot a{color:var(--band-ink)}
.foot .pend{color:#F2A493}