:root{--ink:#0b1220;--muted:#5c6778;--paper:#f6f8fb;--card:#fff;--line:#dfe6ef;--teal:#0f8f88;--violet:#6f5bd4;--warm:#fff7e8;--max:1160px;--r:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}
a{color:#0a716b;text-underline-offset:3px}code{overflow-wrap:anywhere} .wrap{width:min(var(--max),calc(100% - 36px));margin:auto}
.topbar{background:#09111f;color:#d9e1ec;text-align:center;padding:8px;font-size:.9rem}
header{position:sticky;top:0;z-index:10;background:rgba(246,248,251,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:15px 0}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:850;letter-spacing:-.02em}
.mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--teal),var(--violet));font-weight:900}
nav ul{display:flex;gap:22px;list-style:none;margin:0;padding:0}nav a{color:var(--ink);text-decoration:none;font-weight:700}.menu{display:none}
.hero{padding:76px 0 58px;background:radial-gradient(circle at 82% 10%,rgba(111,91,212,.13),transparent 28%),radial-gradient(circle at 10% 0%,rgba(32,184,173,.13),transparent 25%)}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:42px;align-items:center}.eyebrow{font-size:.77rem;font-weight:850;text-transform:uppercase;letter-spacing:.14em;color:var(--teal)}
h1,h2,h3{line-height:1.12;letter-spacing:-.035em}h1{font-size:clamp(2.5rem,5vw,5rem);margin:.23em 0}h2{font-size:clamp(1.8rem,3vw,2.6rem);margin-top:0}h3{font-size:1.24rem}
.lede{font-size:1.2rem;color:var(--muted);max-width:820px}.btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.btn{display:inline-flex;padding:12px 17px;border:1px solid var(--ink);border-radius:11px;text-decoration:none;font-weight:800}.primary{background:var(--ink);color:#fff}.alt{background:#fff;color:var(--ink)}
.flow,.card,.toc,.note,.sourcebox,.cta{background:#fff;border:1px solid var(--line);border-radius:var(--r)}.flow{padding:23px;box-shadow:0 18px 50px rgba(15,30,50,.08)}
.flowrow{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px dashed var(--line)}.flowrow:last-child{border:0}.num{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#e9fbf8;color:#086b66;font-weight:850;flex:none}
.section{padding:58px 0}.white{background:#fff}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.card{padding:22px}.card p{color:var(--muted)}
.article{max-width:830px;margin:auto;padding:50px 0 74px}.article h1{font-size:clamp(2.35rem,5vw,4.2rem)}.article h2{margin-top:2.25em}.article p,.article li{font-size:1.05rem}.meta,.small{font-size:.9rem;color:var(--muted)}
.breadcrumbs{font-size:.88rem;color:var(--muted);padding-top:22px}.breadcrumbs a{color:var(--muted)}.toc{padding:18px 20px;margin:26px 0;background:#fbfcfe}.toc a{display:block;padding:4px 0}
.disclosure{font-size:.92rem;color:var(--muted);border-left:3px solid var(--teal);padding-left:12px}.note{padding:18px 20px;background:var(--warm)}.cta{padding:24px;margin:34px 0;background:linear-gradient(135deg,#0b1220,#17253f);color:#fff}.cta p{color:#d8e1ec}.cta a{color:#fff}
.path{display:flex;gap:8px;flex-wrap:wrap}.pill{padding:7px 10px;border-radius:999px;background:#eef8f6;border:1px solid #d2eeeb;font-size:.88rem;font-weight:750}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);margin:22px 0;font-size:.94rem}th,td{text-align:left;vertical-align:top;padding:13px;border-bottom:1px solid var(--line)}th{background:#eff5f8}
.check{list-style:none;padding:0}.check li{position:relative;padding:9px 0 9px 32px;border-bottom:1px dashed var(--line)}.check li:before{content:"✓";position:absolute;left:4px;color:#0a7b56;font-weight:900}
.sourcebox{padding:20px 22px;margin-top:38px}.sourcebox ul{margin-bottom:0}footer{background:#09111f;color:#c7d0dd;padding:46px 0 28px}footer a{color:#d9f4f1}.footergrid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:28px}footer .small{color:#95a2b3}
@media(max-width:800px){.hero-grid,.grid3,.grid2,.footergrid{grid-template-columns:1fr}.menu{display:block;border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 10px}nav ul{display:none;position:absolute;left:18px;right:18px;top:68px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:0 20px 45px rgba(0,0,0,.12)}nav ul.open{display:grid}.hero{padding-top:50px}table{display:block;overflow:auto}}