:root{color-scheme:dark;--bg:#05070a;--panel:#0b0f14;--panel2:#0f151d;--line:#202a36;--text:#f7f9fb;--muted:#8290a3;--soft:#b8c2cf;--accent:#cbdcff;--good:#79e6a5}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(900px 500px at 50% -100px,rgba(78,111,156,.22),transparent 70%),linear-gradient(#05070a,#06090d 55%,#05070a);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.shell{width:min(1040px,92vw);margin:auto}a{color:inherit}.topbar{display:flex;align-items:center;justify-content:space-between;padding:24px 0;gap:20px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;letter-spacing:-.055em;font-size:24px}.brand img{width:42px;height:42px;border-radius:50%;object-fit:cover;border:1px solid #26394c;box-shadow:0 0 24px rgba(35,146,255,.22)}.brand small{font-size:13px;color:var(--muted);letter-spacing:-.02em;font-weight:650}.nav{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.nav a{font-size:12px;color:var(--soft);background:#0b1118;border:1px solid var(--line);border-radius:10px;padding:9px 12px;text-decoration:none}.nav a.primary{background:#f4f7fb;color:#05070a;border-color:#f4f7fb;font-weight:850}.breadcrumbs{font-size:11px;color:var(--muted);padding:12px 0 0}.breadcrumbs a{text-decoration:none;color:#9aabc0}.hero{padding:72px 0 48px}.kicker{font-size:11px;text-transform:uppercase;letter-spacing:.24em;color:var(--muted);margin-bottom:14px}.hero h1{font-size:clamp(48px,8vw,86px);line-height:.92;letter-spacing:-.065em;margin:0;max-width:900px}.hero p{max-width:760px;margin:24px 0 0;color:var(--soft);font-size:17px;line-height:1.7}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border-radius:11px;padding:12px 16px;border:1px solid var(--line);background:#0c131b;color:#f2f6fb;font-weight:800;font-size:13px}.btn.primary{background:#f4f7fb;color:#05070a;border-color:#f4f7fb}.trust{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}.pill{border:1px solid var(--line);border-radius:999px;padding:6px 9px;color:#9aabc0;font-size:10px}.section{padding:34px 0}.section h2{font-size:clamp(28px,5vw,46px);letter-spacing:-.05em;margin:0 0 12px}.section>p,.lede{max-width:780px;color:var(--muted);font-size:14px;line-height:1.75}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}.card{background:linear-gradient(180deg,#0d131b,#080d12);border:1px solid var(--line);border-radius:16px;padding:20px}.card .eyebrow{font:10px ui-monospace,SFMono-Regular,Menlo,monospace;color:#66768b;text-transform:uppercase;letter-spacing:.08em}.card h3{font-size:19px;letter-spacing:-.025em;margin:18px 0 8px}.card p{margin:0;color:var(--muted);font-size:13px;line-height:1.68}.callout{border:1px solid #35465a;border-radius:20px;background:radial-gradient(600px 220px at 50% 0,rgba(105,145,205,.16),transparent 70%),#090e14;padding:28px;margin:34px 0}.callout h2{margin:0 0 10px;font-size:30px;letter-spacing:-.04em}.callout p{color:var(--muted);font-size:13px;line-height:1.65;margin:0 0 18px;max-width:720px}.terms{display:grid;gap:9px;margin-top:18px}.term{display:grid;grid-template-columns:190px 1fr;gap:18px;padding:14px 0;border-top:1px solid var(--line)}.term:first-child{border-top:0}.term strong{font-size:13px}.term span{font-size:13px;color:var(--muted);line-height:1.6}.related{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.related a{display:block;text-decoration:none;border:1px solid var(--line);background:#090e14;border-radius:14px;padding:14px}.related strong{font-size:13px;display:block}.related span{font-size:11px;color:var(--muted);line-height:1.5;display:block;margin-top:6px}footer{padding:28px 0 42px;border-top:1px solid #151b23;color:#667386;font-size:11px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.socials{display:flex;gap:10px;flex-wrap:wrap}.socials a{color:#9aa8b9;text-decoration:none}.note{font-size:11px;color:var(--muted);line-height:1.6;margin-top:16px}
@media(max-width:760px){.topbar{align-items:flex-start}.brand small{display:none}.nav a:not(.primary){display:none}.grid{grid-template-columns:1fr}.related{grid-template-columns:1fr 1fr}.term{grid-template-columns:1fr;gap:6px}.hero{padding-top:48px}}
@media(max-width:480px){.related{grid-template-columns:1fr}.hero h1{font-size:48px}.hero p{font-size:15px}}

/* v67 — Research-page back navigation */
.back-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0 0}
.back-link{display:inline-flex;align-items:center;gap:7px;text-decoration:none;border:1px solid var(--line);background:#0b1118;color:#b9c5d3;border-radius:10px;padding:9px 12px;font-size:12px;font-weight:750;transition:border-color .15s ease,background .15s ease,color .15s ease,transform .15s ease}
.back-link:hover,.back-link:focus-visible{border-color:#65768d;background:#101822;color:#fff;outline:none;transform:translateX(-1px)}
.back-link .arrow{font-size:14px;line-height:1;color:#8fa0b5}
.back-nav.bottom{padding:8px 0 34px}
@media(max-width:760px){.back-nav{padding-top:8px}.back-link{padding:9px 11px}}