*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--font-display);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
#gl{position:fixed;inset:0;z-index:0;display:block}
.scrim{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(120% 80% at 50% 120%, rgba(255,106,43,.14), transparent 55%);}
main{position:relative;z-index:2}
.wrap{max-width:1180px;margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.mono{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--accent2)}

/* HUD frame */
.hud{position:fixed;inset:16px;z-index:3;pointer-events:none;border:1px solid var(--line);border-radius:6px}
.hud::before{content:"VOIDRIFT // FLIGHT-READY";position:absolute;top:-9px;left:20px;background:var(--bg);
  padding:0 8px;font-family:var(--font-mono);font-size:.62rem;letter-spacing:.2em;color:var(--muted)}
.nav{position:fixed;top:28px;left:0;right:0;z-index:4;display:flex;justify-content:space-between;align-items:center;
  padding:0 clamp(28px,5vw,60px);mix-blend-mode:difference}
.brand{font-weight:700;letter-spacing:.14em;font-size:1rem}
.nav a{color:var(--ink);text-decoration:none;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em}

/* hero */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center}
.hero h1{font-size:clamp(3.4rem,13vw,10rem);line-height:.86;font-weight:700;letter-spacing:-.03em;
  text-transform:uppercase;max-width:12ch}
.hero h1 .hot{color:var(--accent)}
.hero p{margin-top:1.4rem;max-width:42ch;color:var(--muted);font-size:clamp(1rem,1.5vw,1.25rem);line-height:1.5}
.cta{margin-top:2.2rem;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:6px;font-weight:600;
  text-decoration:none;font-size:.95rem;transition:transform var(--t) var(--ease),box-shadow var(--t) var(--ease)}
.btn.pri{background:var(--accent);color:#150800;box-shadow:0 12px 40px -12px var(--accent)}
.btn.pri:hover{transform:translateY(-3px)}
.btn.gho{border:1px solid var(--line);color:var(--ink)}

/* act sections over the persistent 3D */
.act{min-height:100vh;display:flex;align-items:center;padding:12vh 0}
.act.right{justify-content:flex-end;text-align:right}
.panel{max-width:34rem;background:linear-gradient(180deg,rgba(7,8,12,.72),rgba(7,8,12,.5));
  backdrop-filter:blur(2px);padding:clamp(24px,3vw,40px);border-radius:10px;border:1px solid var(--line)}
.act h2{font-size:clamp(2rem,5vw,3.4rem);line-height:1;letter-spacing:-.02em;text-transform:uppercase;margin:.5rem 0 1rem}
.act p{color:var(--muted);line-height:1.6;font-size:1.05rem}
.specs{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);margin-top:1.6rem;border-radius:8px;overflow:hidden}
.spec{background:var(--bg2);padding:16px 18px}
.spec .n{font-family:var(--font-mono);font-size:1.6rem;color:var(--accent2)}
.spec .l{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.12em;margin-top:4px}

/* final */
.finale{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.finale h2{font-size:clamp(2.6rem,9vw,7rem);line-height:.9;text-transform:uppercase;letter-spacing:-.03em}
.finale .hot{color:var(--accent)}
footer{padding:40px 0;border-top:1px solid var(--line);color:var(--muted);font-family:var(--font-mono);font-size:.74rem;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(max-width:640px){.act,.act.right{justify-content:center;text-align:left}.panel{margin:0 auto}
  .scrim{background:radial-gradient(140% 60% at 50% 100%,rgba(255,106,43,.12),transparent 50%),rgba(7,8,12,.35)}}