/* QuantAlpha — shared stylesheet. Institutional look: ink navy, brass accent, serif headlines. */
:root{
  --bg:#080c15; --bg2:#0b111d; --panel:#0f1727; --panel2:#131d31; --line:#1c2740; --line2:#2a3856;
  --text:#e9ecf3; --dim:#9aa6bc; --faint:#6c788f;
  --gold:#c9a55b; --gold2:#e3cc92; --gold-soft:rgba(201,165,91,.12); --steel:#7fb4d4; --up:#4cc38a; --down:#e0645c;
  --serif:"Iowan Old Style","Palatino Linotype","Book Antiqua",Palatino,Georgia,serif;
  --sans:-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}
img,svg{max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:var(--gold);color:#16120a;padding:8px 14px;z-index:300}
.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:100;background:rgba(8,12,21,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:18px}
.brand{display:flex;flex-direction:column;line-height:1;text-decoration:none}
.brand b{font-family:var(--serif);font-weight:600;font-size:21px;letter-spacing:.22em}
.brand span{font-size:9.5px;letter-spacing:.34em;text-transform:uppercase;color:var(--gold);margin-top:5px}
.nav{display:flex;gap:26px;list-style:none;margin:0;padding:0}
.nav a{text-decoration:none;color:var(--dim);font-size:13.5px;letter-spacing:.04em;padding:8px 0;border-bottom:1px solid transparent;transition:color .15s,border-color .15s}
.nav a:hover{color:var(--text)}
.nav a.on{color:var(--text);border-color:var(--gold)}
.hdr-cta{display:flex;gap:10px;align-items:center}
.menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line2);background:transparent;color:var(--text);cursor:pointer;place-items:center}
.menu-btn svg{width:20px;height:20px}
.drawer{display:none}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;background:var(--gold);color:#17120a;font:600 12.5px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;text-decoration:none;border:1px solid var(--gold);border-radius:2px;cursor:pointer;transition:background .15s,color .15s,transform .15s}
.btn:hover{background:var(--gold2);border-color:var(--gold2);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--line2)}
.btn.ghost:hover{border-color:var(--gold);color:var(--gold2);background:transparent}
.btn.sm{padding:10px 18px;font-size:11.5px}
.btn[disabled],.btn.off{opacity:.45;pointer-events:none}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:96px 0 84px;background:radial-gradient(900px 480px at 85% -10%,rgba(201,165,91,.13),transparent 62%),linear-gradient(var(--bg),var(--bg2));border-bottom:1px solid var(--line)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;opacity:.28;-webkit-mask-image:radial-gradient(ellipse at 70% 30%,#000 5%,transparent 70%);mask-image:radial-gradient(ellipse at 70% 30%,#000 5%,transparent 70%)}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.hero.slim{padding:72px 0 60px}
.hero.slim .wrap{grid-template-columns:1fr}
.eyebrow{font-size:11.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--gold);font-weight:600;display:inline-flex;align-items:center;gap:12px}
.eyebrow::before{content:"";width:34px;height:1px;background:var(--gold)}
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.01em}
h1{font-size:clamp(36px,5.6vw,64px);line-height:1.04;margin:18px 0 22px}
h1 em{font-style:italic;color:var(--gold2)}
h2{font-size:clamp(28px,3.8vw,44px);line-height:1.1;margin:14px 0 14px}
h3{font-size:21px;line-height:1.25;margin:0 0 8px}
.lede{color:var(--dim);font-size:18px;max-width:660px;margin:0}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}

.snap{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line2);padding:6px 26px 10px;position:relative}
.snap::before{content:"";position:absolute;left:-1px;top:-1px;width:56px;height:2px;background:var(--gold)}
.snap .hd{display:flex;justify-content:space-between;align-items:center;padding:18px 0 14px;border-bottom:1px solid var(--line);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--faint)}
.snap .hd i{width:7px;height:7px;border-radius:50%;background:var(--up);display:inline-block;margin-right:8px;box-shadow:0 0 0 0 rgba(76,195,138,.6);animation:pulse 2.2s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(76,195,138,0)}100%{box-shadow:0 0 0 0 rgba(76,195,138,0)}}
.snap dl{margin:0}
.snap .r{display:grid;grid-template-columns:120px 1fr;gap:14px;padding:15px 0;border-bottom:1px solid var(--line);align-items:baseline}
.snap .r:last-child{border-bottom:0}
.snap dt{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--faint)}
.snap dd{margin:0;font-size:15px;color:var(--text)}
.wave{display:block;width:100%;height:70px;margin-top:6px}
.wave path{fill:none;stroke:var(--gold);stroke-width:1.6;stroke-dasharray:900;stroke-dashoffset:900;animation:dash 3.2s ease forwards}
.wave path.b{stroke:var(--steel);opacity:.6;animation-delay:.4s}
@keyframes dash{to{stroke-dashoffset:0}}

/* ---------- bands & sections ---------- */
.strip{border-bottom:1px solid var(--line);background:var(--bg2)}
.strip .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 28px;padding-top:20px;padding-bottom:20px}
.strip span{font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim)}
.strip span b{color:var(--gold);font-weight:600;margin-right:8px}
section.sec{padding:96px 0;border-bottom:1px solid var(--line)}
section.sec.alt{background:var(--bg2)}
.sec-head{display:flex;align-items:center;gap:16px}
.num{font-family:var(--serif);font-size:15px;color:var(--gold);letter-spacing:.1em}
.sub{color:var(--dim);max-width:700px;margin:0 0 44px;font-size:17px}
.grid{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.cell{background:var(--bg);padding:30px 28px}
.alt .cell{background:var(--bg2)}
.cell .k{font-family:var(--mono);font-size:12px;color:var(--gold);letter-spacing:.12em;margin-bottom:14px;display:block}
.cell p{margin:0;color:var(--dim);font-size:15px}
.cell ul{margin:12px 0 0;padding:0;list-style:none;display:grid;gap:8px}
.cell li{position:relative;padding-left:20px;font-size:14.5px;color:var(--dim)}
.cell li::before{content:"";position:absolute;left:0;top:11px;width:10px;height:1px;background:var(--gold)}
.tag{display:inline-block;font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;padding:3px 9px;border:1px solid var(--gold);color:var(--gold);margin-bottom:14px}
.tag.live{border-color:var(--up);color:var(--up)}
.tag.dim{border-color:var(--line2);color:var(--faint)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.pull{font-family:var(--serif);font-size:clamp(22px,2.6vw,30px);line-height:1.35;color:var(--text);border-left:2px solid var(--gold);padding-left:24px;margin:0}
.pull small{display:block;margin-top:14px;font-family:var(--sans);font-size:13px;color:var(--faint);letter-spacing:.04em}

/* compare table */
.compare{width:100%;border-collapse:collapse;border:1px solid var(--line)}
.compare th,.compare td{padding:18px 22px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;font-size:15px}
.compare th{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--faint);font-weight:600;background:var(--bg2)}
.compare th.us{color:var(--gold)}
.compare td:first-child{color:var(--text);font-weight:600;width:24%}
.compare td{color:var(--dim)}
.compare td.us{color:var(--text);background:var(--gold-soft)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);border:1px solid var(--line);background:var(--line);gap:1px}
.step{background:var(--bg);padding:26px 22px}
.alt .step{background:var(--bg2)}
.step b{display:block;font-family:var(--serif);font-size:34px;color:var(--gold);font-weight:500;line-height:1;margin-bottom:12px}
.step h3{font-size:18px}
.step p{margin:0;color:var(--dim);font-size:14px}

/* lists */
.checks{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.checks li{position:relative;padding-left:30px;color:var(--dim);font-size:15.5px}
.checks li::before{content:"";position:absolute;left:0;top:6px;width:16px;height:16px;border:1px solid var(--gold);border-radius:50%}
.checks li::after{content:"";position:absolute;left:5px;top:11px;width:6px;height:3px;border-left:1.5px solid var(--gold);border-bottom:1.5px solid var(--gold);transform:rotate(-45deg)}
.checks b{color:var(--text);font-weight:600}

/* accordion */
details{border:1px solid var(--line);background:var(--panel);margin-bottom:8px}
summary{cursor:pointer;padding:18px 22px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:14px;font-size:15.5px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--gold);font-size:22px;line-height:1;font-weight:300}
details[open] summary::after{content:"–"}
details .body{padding:0 22px 20px;color:var(--dim);font-size:15px}
details .body p{margin:0 0 10px}

/* tabs */
.tabbar{display:flex;gap:0;border-bottom:1px solid var(--line);margin-bottom:34px;overflow-x:auto;scrollbar-width:none}
.tabbar::-webkit-scrollbar{display:none}
.tabbar button{background:transparent;border:0;border-bottom:2px solid transparent;color:var(--dim);padding:16px 26px;font:600 12.5px var(--sans);letter-spacing:.16em;text-transform:uppercase;cursor:pointer;white-space:nowrap}
.tabbar button:hover{color:var(--text)}
.tabbar button[aria-selected="true"]{color:var(--gold2);border-color:var(--gold)}
.tabpane[hidden]{display:none}
.tabpane{animation:fade .35s ease}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* portals */
.portal{background:var(--bg);padding:34px 30px;display:flex;flex-direction:column;gap:6px;min-height:270px}
.portal h3{font-size:24px}
.portal p{color:var(--dim);margin:0 0 16px;font-size:15px;flex:1}
.portal .ic{width:44px;height:44px;border:1px solid var(--line2);display:grid;place-items:center;color:var(--gold);margin-bottom:14px}
.portal .ic svg{width:22px;height:22px}

/* forms */
.form{display:grid;gap:22px}
fieldset{border:1px solid var(--line);margin:0;padding:26px 26px 22px;background:var(--panel)}
legend{padding:0 10px;font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold)}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fgrid .full{grid-column:1/-1}
label.f{display:grid;gap:7px;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);font-weight:600}
label.f small{text-transform:none;letter-spacing:0;font-weight:400;color:var(--faint);font-size:12.5px}
input,select,textarea{font:inherit;font-size:15px;letter-spacing:0;text-transform:none;font-weight:400;padding:12px 14px;background:var(--bg2);color:var(--text);border:1px solid var(--line2);border-radius:2px;width:100%}
input:focus,select:focus,textarea:focus{outline:1px solid var(--gold);border-color:var(--gold)}
textarea{min-height:110px;resize:vertical}
.opts{display:flex;flex-wrap:wrap;gap:10px 22px}
.opt{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--dim);letter-spacing:0;text-transform:none;font-weight:400;cursor:pointer}
.opt input{width:auto;margin-top:4px;accent-color:var(--gold)}
.consent{display:grid;gap:14px}
.note{font-size:13px;color:var(--faint)}
.alert{border:1px solid var(--gold);background:var(--gold-soft);padding:16px 20px;color:var(--text);font-size:14.5px}
.err{color:var(--down);font-size:13px;min-height:18px}
.actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* calculators */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.calc>div{background:var(--bg);padding:30px}
.calc .out{background:var(--panel)}
.rng{display:grid;gap:8px;margin-bottom:22px}
.rng .l{display:flex;justify-content:space-between;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.rng .l b{color:var(--gold2);font-family:var(--mono);letter-spacing:0;font-size:14px}
input[type=range]{padding:0;height:4px;background:var(--line2);border:0;accent-color:var(--gold)}
.big{font-family:var(--serif);font-size:44px;color:var(--gold2);line-height:1.1;margin:6px 0 4px}
.kv{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--dim)}
.kv b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums}
.bar2{display:flex;height:10px;margin:18px 0 6px;background:var(--line)}
.bar2 i{display:block;height:100%}
.bar2 .a{background:var(--steel)}.bar2 .b{background:var(--gold)}

/* contact + footer */
.contact{display:grid;grid-template-columns:1.1fr .9fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.contact>div{background:var(--bg);padding:34px}
.crow{display:flex;gap:14px;margin-top:16px;color:var(--dim);font-size:15px}
.crow svg{flex:none;width:18px;height:18px;margin-top:4px;color:var(--gold)}
address{font-style:normal}
footer{background:var(--bg2);padding:64px 0 36px;font-size:14px;color:var(--dim)}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--line)}
footer h4{margin:0 0 16px;font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);font-weight:600}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
footer a{text-decoration:none}footer a:hover{color:var(--gold2)}
footer .legal{font-size:12.5px;color:var(--faint);line-height:1.75;padding-top:28px;max-width:1000px}
footer .legal p{margin:0 0 12px}
footer .copy{margin-top:18px;font-size:12.5px;color:var(--faint)}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.wave path{animation:none;stroke-dashoffset:0}.snap .hd i,.tabpane{animation:none}html{scroll-behavior:auto}}

/* ---------- responsive ---------- */
@media (max-width:1040px){
  .nav,.hdr-cta .btn.ghost{display:none}
  .menu-btn{display:grid}
  .drawer{display:block;position:fixed;inset:72px 0 auto 0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 24px 24px;transform:translateY(-120%);transition:transform .25s ease;z-index:99;max-height:calc(100vh - 72px);overflow:auto}
  .drawer.open{transform:none}
  .drawer a{display:block;padding:15px 0;border-bottom:1px solid var(--line);text-decoration:none;font-size:15px}
  .hero{padding:64px 0 56px}
  .hero .wrap,.split,.contact,.calc{grid-template-columns:1fr}
  .g3,.g4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr 1fr}
  section.sec{padding:68px 0}
}
@media (max-width:640px){
  .g2,.g3,.g4,.steps,.fgrid{grid-template-columns:1fr}
  .snap .r{grid-template-columns:1fr;gap:4px}
  .compare thead{display:none}
  .compare,.compare tbody,.compare tr,.compare td{display:block;width:auto}
  .compare tr{border-bottom:1px solid var(--line);padding:6px 0}
  .compare td{border:0;padding:6px 16px}
  .compare td:first-child{width:auto;padding-top:14px;font-family:var(--serif);font-size:18px}
  .compare td:nth-child(2)::before,.compare td:nth-child(3)::before{display:block;font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--faint);margin-bottom:2px}
  .compare td:nth-child(2)::before{content:"On your own"}
  .compare td:nth-child(3)::before{content:"On the QuantAlpha floor";color:var(--gold)}
  .compare td.us{margin:4px 16px 12px;padding:10px 12px}
  footer .cols{grid-template-columns:1fr}
  .hdr-cta .btn{padding:10px 14px;font-size:11px}
  .brand b{font-size:18px}
  .tabbar button{padding:14px 18px}
  .cell{padding:24px 20px}
  .big{font-size:36px}
}