:root{
  --bg:#000000; --raised:#0D0D0D; --card:#111111; --border:#262626; --border-soft:#1C1C1C;
  --muted:#8C8C8C; --dim:#6A6A6A; --white:#FFFFFF; --ink:#141414;
  --amber:#D9A441; --amber-deep:#B8862F; --red:#E5484D; --green:#3FB950;
  --display:'Space Grotesk',sans-serif; --body:'IBM Plex Sans',sans-serif; --mono:'IBM Plex Mono',monospace;
  --maxw:1080px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0; background:var(--bg); color:var(--white); font-family:var(--body); font-size:16px; line-height:1.6; -webkit-font-smoothing:antialiased;}
a{color:inherit; text-decoration:none;}
h1,h2,h3{font-family:var(--display); font-weight:600; letter-spacing:-0.02em; line-height:1.14; margin:0;}
p{margin:0;}
.container{max-width:var(--maxw); margin:0 auto; padding:0 24px;}
.section{padding:96px 0; border-top:0.5px solid var(--border-soft);}
.eyebrow{display:inline-flex; align-items:center; gap:8px; border:0.5px solid #2E2E2E; border-radius:999px; padding:5px 12px; font-size:12px; color:var(--muted); font-family:var(--body);}
.eyebrow .dot{width:7px; height:7px; border-radius:50%; background:var(--amber); display:inline-block;}
.sec-label{font-size:12px; font-weight:500; letter-spacing:0.09em; text-transform:uppercase; color:var(--amber-deep); font-family:var(--body); margin-bottom:18px;}
.sec-title{font-size:30px; max-width:20ch;}
.lead{color:var(--muted); font-size:16px; max-width:60ch; margin-top:16px;}
.lead--flush{margin-top:0;}
.hl{color:#fff; font-weight:500;}

.btn{display:inline-flex; align-items:center; gap:8px; font-family:var(--body); font-size:14px; font-weight:500; padding:11px 20px; border-radius:8px; cursor:pointer; border:0.5px solid transparent; transition:transform .12s ease, background .2s ease;}
.btn-primary{background:var(--amber); color:var(--ink);}
.btn-primary:hover{background:#E3B255;}
.btn-primary:active{transform:scale(0.98);}
.btn-ghost{background:transparent; color:var(--white); border-color:#383838;}
.btn-ghost:hover{background:#141414;}
:focus-visible{outline:2px solid var(--amber); outline-offset:2px; border-radius:4px;}

/* NAV */
.nav{position:sticky; top:0; z-index:50; background:rgba(0,0,0,0.82); border-bottom:0.5px solid transparent; transition:border-color .3s;}
.nav.scrolled{border-bottom-color:var(--border);}
.nav-inner{display:flex; align-items:center; justify-content:space-between; height:64px;}
.logo{display:flex; align-items:center; gap:10px;}
.logo svg{display:block;}
.logo .word{font-family:var(--display); font-weight:600; font-size:20px; letter-spacing:-0.01em;}
.nav-right{display:flex; align-items:center; gap:22px;}
.nav-right a.link{font-size:14px; color:var(--muted);}
.nav-right a.link:hover{color:var(--white);}
.nav-burger{display:none; flex-direction:column; justify-content:center; gap:5px; width:40px; height:40px; padding:9px; background:none; border:0; cursor:pointer;}
.nav-burger span{display:block; width:22px; height:1.5px; background:var(--white); transition:transform .25s ease, opacity .2s ease;}
.nav.menu-open .nav-burger span:nth-child(1){transform:translateY(6.5px) rotate(45deg);}
.nav.menu-open .nav-burger span:nth-child(2){opacity:0;}
.nav.menu-open .nav-burger span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg);}
.nav-menu{display:none; background:#000; border-top:0.5px solid var(--border-soft); border-bottom:0.5px solid var(--border);}
.nav-menu .container{display:flex; flex-direction:column; align-items:flex-start; padding-top:8px; padding-bottom:20px;}
.nav-menu a.link{display:block; width:100%; padding:14px 0; font-size:15px; color:var(--muted); border-bottom:0.5px solid var(--border-soft);}
.nav-menu a.link:hover{color:var(--white);}
.nav-menu .btn{margin-top:16px;}

/* HERO */
.hero{position:relative; overflow:hidden; min-height:88vh; display:flex; align-items:center; border-top:none;}
#heroCanvas{position:absolute; inset:0; width:100%; height:100%; display:block;}
.hero-veil{position:absolute; inset:0; background:radial-gradient(120% 85% at 50% 45%, rgba(0,0,0,0) 30%, rgba(0,0,0,0.55) 100%); pointer-events:none;}
.hero-content{position:relative; z-index:2; padding:120px 24px; width:100%;}
.hero h1{font-size:clamp(34px,6vw,60px); max-width:18ch; margin-top:24px;}
.hero .lead{font-size:clamp(15px,2vw,18px); max-width:52ch; margin-top:22px; color:#9A9A9A;}
.hero .cta-row{margin-top:34px; display:flex; gap:12px; flex-wrap:wrap;}

/* PROBLEM */
.stats{display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:44px;}
.stat{background:var(--raised); border:0.5px solid var(--border); border-radius:12px; padding:26px 22px;}
.stat .num{font-family:var(--display); font-size:34px; font-weight:600; color:var(--amber); letter-spacing:-0.02em;}
.stat .lbl{font-size:13px; color:var(--muted); margin-top:10px; line-height:1.5;}

/* SOLUTION — finding card */
.sol-grid{display:grid; grid-template-columns:1.1fr 0.9fr; gap:40px; align-items:center; margin-top:40px;}
.finding{background:var(--card); border:0.5px solid var(--border); border-radius:12px; padding:18px;}
.finding .row{display:flex; align-items:center; gap:8px; margin-bottom:12px; flex-wrap:wrap;}
.chip{font-family:var(--body); font-size:12px; font-weight:500; padding:3px 10px; border-radius:999px; display:inline-flex; align-items:center; gap:6px;}
.chip-assumed{border:1px dashed #6E86A0; color:#B7C4D2;}
.chip-assumed .d{width:8px;height:8px;border-radius:50%;border:1.5px dashed #6E86A0;box-sizing:border-box;}
.chip-sev{border:0.5px solid #5A5A5A; color:#E4E4E4; text-transform:uppercase; letter-spacing:0.04em; font-size:11px; font-weight:600; padding:3px 9px; border-radius:4px;}
.finding .title{font-size:15px; font-weight:500; color:var(--white);}
.finding .desc{font-size:13px; color:var(--muted); margin-top:6px; line-height:1.55;}
.code{background:#000; border:0.5px solid var(--border-soft); border-radius:8px; padding:10px 12px; margin-top:12px; font-family:var(--mono); font-size:12.5px; line-height:1.7; color:#B0B0AE;}
.code .rm{color:var(--red);} .code .ad{color:var(--green);} .code .cm{color:var(--dim);}
.finding .acts{display:flex; gap:8px; margin-top:14px;}
.finding .acts .a1{background:var(--amber); color:var(--ink); font-size:13px; font-weight:500; padding:8px 14px; border-radius:8px;}
.finding .acts .a2{background:transparent; color:#E4E4E4; border:0.5px solid #383838; font-size:13px; font-weight:500; padding:8px 14px; border-radius:8px;}

/* HOW IT WORKS — loop */
.anim-frame{position:relative; margin-top:40px; border:0.5px solid var(--border); border-radius:14px; background:var(--raised); height:360px; overflow:hidden; display:flex; align-items:center; justify-content:center;}
#archCanvas{position:absolute; inset:0; width:100%; height:100%; display:block;}
.loop{display:grid; grid-template-columns:repeat(3,1fr); gap:14px; margin-top:36px;}
.step{border:0.5px solid var(--border); border-radius:12px; padding:22px; background:var(--raised);}
.step .k{font-family:var(--mono); font-size:12px; color:var(--amber-deep); letter-spacing:0.05em;}
.step .n{font-family:var(--display); font-size:18px; font-weight:600; margin-top:8px;}
.step .d{font-size:13.5px; color:var(--muted); margin-top:8px; line-height:1.55;}

/* WHO */
.who-body{max-width:62ch; margin-top:20px; color:var(--muted); font-size:17px;}
.who-tags{display:flex; flex-wrap:wrap; gap:10px; margin-top:26px;}
.who-tags span{border:0.5px solid var(--border); border-radius:999px; padding:7px 14px; font-size:13px; color:#C7C7C7;}

/* DIFFERENT */
.diff{display:grid; grid-template-columns:repeat(2,1fr); gap:16px; margin-top:40px;}
.dcard{border:0.5px solid var(--border); border-radius:12px; padding:26px; background:var(--raised);}
.dcard h3{font-size:18px; margin-bottom:10px;}
.dcard p{font-size:14px; color:var(--muted); line-height:1.6;}
.dcard .kw{color:var(--amber);}

/* WAITLIST */
#waitlist{border-top:0.5px solid var(--border);}
.wl{text-align:center; padding:110px 0;}
.wl h2{font-size:clamp(28px,5vw,44px); max-width:20ch; margin:0 auto;}
.wl p{color:var(--muted); margin-top:16px;}
.wl iframe{display:block; border:0; margin:30px auto 0; max-width:480px;}
.wl .fine{font-size:12px; color:var(--dim); margin-top:16px;}

/* FOOTER */
footer{border-top:0.5px solid var(--border-soft); padding:40px 0;}
.foot{display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px;}
.foot .fl{display:flex; align-items:center; gap:10px; color:var(--muted); font-size:14px;}
.foot a{color:var(--muted); font-size:14px;} .foot a:hover{color:var(--white);}

/* reveal */
.reveal{opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1; transform:none;}

@media (max-width:820px){
  .stats{grid-template-columns:1fr;}
  .sol-grid{grid-template-columns:1fr;}
  .loop{grid-template-columns:1fr;}
  .diff{grid-template-columns:1fr;}
  .section{padding:72px 0;}
  .nav-right{display:none;}
  .nav-burger{display:flex;}
  .nav.menu-open .nav-menu{display:block;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1; transform:none; transition:none;}
}