:root{--bg:#f7f8fb;--ink:#162033;--muted:#56647a;--brand:#5b3df5;--brand2:#3320a7;--line:#dfe4ee;--card:#fff;--soft:#eeeaff;--accent:#0f8f75;--shadow:0 12px 32px rgba(20,30,55,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font:16px/1.72 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand2)}a:hover{text-decoration-thickness:2px}img{max-width:100%}
.skip{position:absolute;left:-999px;top:8px}.skip:focus{left:8px;z-index:9999;background:#fff;padding:10px;border:2px solid var(--brand)}
header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav{max-width:1180px;margin:auto;display:flex;align-items:center;gap:22px;padding:13px 20px}.brand{font-weight:850;text-decoration:none;color:var(--ink);font-size:1.1rem}.brand b{color:var(--brand)}
.navlinks{display:flex;gap:18px;margin-left:auto;align-items:center}.navlinks a{text-decoration:none;color:var(--ink);font-weight:650}
.btn{display:inline-block;background:var(--brand);color:#fff!important;text-decoration:none;padding:11px 16px;border-radius:10px;font-weight:800;border:0;cursor:pointer}.btn:hover{background:var(--brand2)}
.btn.secondary{background:#fff;color:var(--brand2)!important;border:1px solid var(--line)}
.hero{background:linear-gradient(135deg,#11182b,#3425a6);color:#fff;padding:72px 20px}.hero .wrap{max-width:1080px;margin:auto}.hero h1{font-size:clamp(2.2rem,6vw,4.5rem);line-height:1.03;margin:.2em 0}.hero p{font-size:1.18rem;max-width:760px;color:#e9eaff}
.wrap{max-width:1180px;margin:auto;padding:0 20px}.layout{display:grid;grid-template-columns:minmax(0,790px) 320px;gap:34px;align-items:start;padding-top:34px;padding-bottom:64px}
article{background:#fff;border:1px solid var(--line);border-radius:18px;padding:clamp(22px,4vw,48px);box-shadow:var(--shadow)}
article h1{font-size:clamp(2rem,4vw,3.25rem);line-height:1.08;margin:.2em 0 .35em}article h2{font-size:1.55rem;line-height:1.25;margin-top:2.1em}article h3{font-size:1.15rem;margin-top:1.6em}
.eyebrow{text-transform:uppercase;letter-spacing:.09em;color:var(--brand);font-weight:800;font-size:.82rem}.lede{font-size:1.18rem;color:var(--muted)}
.factbox,.note{background:var(--soft);border-left:4px solid var(--brand);padding:16px 18px;border-radius:10px;margin:22px 0}.disclosure{font-size:.9rem;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}
.cta{background:#141c31;color:#fff;border-radius:16px;padding:24px;margin:28px 0}.cta p{color:#dfe4f6}.cta .btn{background:#735cff}.cta small{display:block;color:#bdc7df;margin-top:10px}
.sidebar{position:sticky;top:86px}.sidecard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow);margin-bottom:18px}.sidecard h2{font-size:1.1rem;margin-top:0}.sidecard ul{padding-left:18px}.sidecard a{font-weight:650}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px}.card h2,.card h3{margin-top:0}.card a{font-weight:750;text-decoration:none}
.breadcrumbs{font-size:.92rem;color:var(--muted);margin-bottom:12px}.breadcrumbs a{color:inherit}
footer{background:#10182b;color:#ced5e5;padding:44px 20px}footer .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}footer a{color:#fff}
.toc{background:#f8f9fc;border:1px solid var(--line);padding:18px;border-radius:12px}.toc strong{display:block;margin-bottom:8px}
.popup-backdrop{display:none;position:fixed;inset:0;background:rgba(8,14,28,.72);z-index:100;place-items:center;padding:20px}.popup-backdrop.open{display:grid}.popup{max-width:640px;background:#fff;border-radius:20px;padding:30px;box-shadow:0 30px 90px rgba(0,0,0,.35);position:relative}.popup-close{position:absolute;right:14px;top:12px;border:0;background:#eef0f5;border-radius:99px;width:36px;height:36px;font-size:20px;cursor:pointer}
.popup h2{font-size:2rem;line-height:1.1;margin:.2em 0}.popup ul{padding-left:20px}.pill{display:inline-block;padding:5px 10px;background:var(--soft);color:var(--brand2);border-radius:99px;font-weight:750;font-size:.85rem}
table{width:100%;border-collapse:collapse;margin:22px 0}th,td{border:1px solid var(--line);padding:10px;text-align:left}th{background:#f4f5f8}
@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{position:static}.navlinks a:not(.btn){display:none}.grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.grid{grid-template-columns:1fr}.hero{padding:48px 20px}.nav{gap:10px}.nav .btn{padding:9px 10px;font-size:.88rem}article{border-radius:12px}.popup{padding:24px 20px}footer .wrap{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}