:root{
  /* PALETTE (matches the final v3 SIFLX intro). Swap here to re-theme; keep in sync with brand/make_svgs.py */
  --p1:#ffc21a;   /* electric gold  (lead accent) */
  --p2:#ff8a00;   /* electric orange (lead accent) */
  --p3:#ff2d95;   /* hot pink  (secondary) */
  --p4:#1e90ff;   /* electric blue (secondary) */
  --lime:#b8ff2e; /* lime (secondary) */
  --ice:#cfeeff;  /* ice-blue / white highlight */
  --accent:var(--p1);
  --prism:linear-gradient(95deg,#fff 0%,var(--p1) 28%,var(--p2) 62%,var(--p3) 100%);
  --btn:linear-gradient(100deg,var(--p1),var(--p2));
  --btn-text:#000;
  --word-glow:0 0 2px #fff,0 0 10px color-mix(in srgb,var(--p1) 80%,transparent),0 0 28px color-mix(in srgb,var(--p3) 55%,transparent);
  --bg:#000;--bg2:#0a0a0a;--line:rgba(255,255,255,.09);--text:#fbfaf7;--mute:#a9a7a2;--r:16px}
*{box-sizing:border-box}html{scroll-padding-top:76px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit}img,video{max-width:100%;display:block}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 22px}
.glow{position:fixed;inset:0;pointer-events:none;z-index:0;background:radial-gradient(60vw 50vh at 88% -12%,color-mix(in srgb,var(--p2) 20%,transparent),transparent 70%),radial-gradient(50vw 40vh at -12% 22%,color-mix(in srgb,var(--p3) 12%,transparent),transparent 70%),radial-gradient(45vw 30vh at 70% 112%,color-mix(in srgb,var(--p4) 14%,transparent),transparent 70%)}
.grid-bg{position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.35;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(ellipse at 50% 0%,#000 10%,transparent 65%);-webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 10%,transparent 65%)}
main,header,footer{position:relative;z-index:1}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;border-bottom:1px solid var(--line);backdrop-filter:blur(10px);position:sticky;top:0;z-index:5;background:rgba(5,4,10,.7)}
.nav .brand img{height:26px;width:auto}
.nav a.small{font-size:14px;color:var(--mute);text-decoration:none;margin-left:18px}.nav a.small:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 22px;border-radius:999px;font-weight:600;font-size:15px;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .2s,background .2s;font-family:inherit}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--btn);color:var(--btn-text);box-shadow:0 8px 30px -8px color-mix(in srgb,var(--p3) 55%,transparent)}
.btn-primary:hover{box-shadow:0 10px 40px -6px color-mix(in srgb,var(--p3) 75%,transparent)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.16);color:var(--text)}.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:600}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ice);box-shadow:0 0 10px var(--ice),0 0 18px var(--p4)}
h1,h2,h3{letter-spacing:-.03em;line-height:1.08;margin:0}
h1{font-size:clamp(40px,9.5vw,84px);font-weight:750}
h2{font-size:clamp(30px,6vw,48px);font-weight:700}
h3{font-size:19px;font-weight:650;letter-spacing:-.01em}
.grad{background:var(--prism);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:clamp(17px,2.4vw,20px);color:var(--mute);max-width:640px}
section{padding:88px 0;border-top:1px solid var(--line)}
.card{background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));border:1px solid var(--line);border-radius:var(--r);padding:26px}
.muted{color:var(--mute)}
footer{border-top:1px solid var(--line);padding:36px 0 48px;color:var(--mute);font-size:14px}
footer a{color:var(--text)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media(max-width:819px){.hide-m{display:none}}
.glow-word{color:#fff;text-shadow:var(--word-glow)}