:root{
  --bg:#0a0c0d;
  --bg-raised:#14181a;
  --bg-card:#111516;
  --ink:#f4eee2;
  --ink-dim:#a49a8d;
  --ink-faint:#6b6459;
  --hot:#ff5a2e;
  --hot-soft:#3a1f14;
  --cool:#34c3ff;
  --cool-soft:#0f2733;
  --line:rgba(244,238,226,0.14);
  --line-strong:rgba(244,238,226,0.30);
  --font-display:"Bahnschrift SemiCondensed","Bahnschrift","Arial Narrow",'Segoe UI',sans-serif;
  --font-body:'Segoe UI',system-ui,-apple-system,sans-serif;
  --font-mono:'Cascadia Mono','Consolas','SFMono-Regular',ui-monospace,monospace;
}
color-scheme: dark;
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{background:var(--bg);}
@media not (prefers-reduced-motion: reduce){ html{scroll-behavior:smooth;} }
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
  position:relative;
}
body::before{
  content:"";
  position:fixed;inset:0;
  pointer-events:none;
  z-index:40;
  background:radial-gradient(ellipse at 50% 0%, rgba(0,0,0,0) 45%, rgba(0,0,0,0.55) 100%);
}
h1,h2,h3{font-family:var(--font-display);text-wrap:balance;font-weight:700;letter-spacing:.01em;}
a{color:inherit;}
img{display:block;max-width:100%;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

/* ---------- telemetry rail ---------- */
.rail{
  position:fixed;
  left:0; top:0; bottom:0;
  width:52px;
  z-index:50;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:0;
  background:linear-gradient(90deg, rgba(10,12,13,.9), rgba(10,12,13,0));
}
.rail-line{
  position:absolute;
  left:25px; top:8%; bottom:8%;
  width:1px;
  background:var(--line);
}
.rail-fill{
  position:absolute;
  left:25px; top:8%;
  width:1px;
  background:var(--cool);
  height:0%;
  transition:height .1s linear;
  box-shadow:0 0 8px var(--cool);
}
.rail-dots{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:0;
  height:84%;
  justify-content:space-between;
}
.rail-dot{
  position:relative;
  width:28px;height:28px;
  margin:-9.5px 0;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
  border-radius:50%;
}
.rail-dot::before{
  content:"";
  width:9px;height:9px;
  border-radius:50%;
  background:var(--bg);
  border:1px solid var(--line-strong);
  transition:background .25s, border-color .25s, transform .25s;
}
.rail-dot.active::before{
  background:var(--cool);
  border-color:var(--cool);
  transform:scale(1.35);
  box-shadow:0 0 10px rgba(52,195,255,.6);
}
.rail-dot .rail-label{
  position:absolute;
  left:26px;top:50%;
  transform:translateY(-50%);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  white-space:nowrap;
  color:var(--ink-dim);
  opacity:0;
  transition:opacity .2s;
  pointer-events:none;
}
.rail-dot.active .rail-label{opacity:1;color:var(--ink);}
.rail-dot:focus-visible{outline:2px solid var(--cool);outline-offset:2px;}
@media (max-width:760px){ .rail{width:18px;} .rail-dot .rail-label{display:none;} .rail-line,.rail-fill{left:9px;} .rail-dot{width:22px;height:22px;margin:-6px 0;} }

/* ---------- ambient mood lighting, tied to active phase ---------- */
.ambient{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  opacity:0;transition:opacity 1.1s ease;
}
.ambient.visible{opacity:1;}
.ambient.hot{background:radial-gradient(ellipse 60% 42% at 50% 12%, rgba(255,90,46,.14), transparent 70%);}
.ambient.cool{background:radial-gradient(ellipse 60% 42% at 50% 12%, rgba(52,195,255,.14), transparent 70%);}

main{position:relative; margin-left:52px;}
@media (max-width:760px){ main{margin-left:18px;} }

section{
  position:relative;
  padding:min(14vh,120px) clamp(20px,7vw,96px);
  max-width:1180px;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent,var(--cool));
  margin-bottom:18px;
  display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";display:inline-block;width:22px;height:1px;background:var(--accent,var(--cool));}

/* ---------- scroll-scrubbed reveal system ---------- */
/* opacity/transform/clip-path are written directly by JS every frame as the
   element crosses the viewport, so no default hidden state is needed here
   (keeps content visible if script fails to run) */
.scrub{will-change:opacity,transform;}
.scrub-wipe{will-change:clip-path;}
@media (prefers-reduced-motion:reduce){
  .scrub{opacity:1 !important;transform:none !important;}
  .scrub-wipe{clip-path:inset(0 0 0 0) !important;}
}

/* ---------- hero ---------- */
.hero{
  min-height:100svh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding-top:8vh;
  max-width:none;
  overflow:hidden;
}
.hero-grid{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1fr 1.15fr;
  gap:clamp(24px,4vw,64px);
  align-items:center;
  width:100%;
}
@media (max-width:900px){ .hero-grid{grid-template-columns:1fr;} }
.hero-eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.2em;color:var(--ink-dim);text-transform:uppercase;margin-bottom:22px;}
.hero h1{
  font-size:clamp(2.6rem,6.2vw,5.1rem);
  line-height:1.02;
  text-transform:uppercase;
  letter-spacing:.01em;
}
.hero h1 .l2{color:var(--cool);}
.hero-lede{
  margin-top:28px;
  max-width:46ch;
  font-size:1.08rem;
  color:var(--ink-dim);
}
.hero-stage{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
}
.hero-3d{
  position:relative;
  width:100%;
  aspect-ratio:1/1;
  max-width:760px;
}
.hero-3d #viewer3d{ width:100%; height:100%; }
.hero-3d canvas{
  width:100%!important;height:100%!important;display:block;
  cursor:grab;
  touch-action:pan-y;
  border-radius:2px;
}
.hero-3d canvas:active{cursor:grabbing;}
.hero-3d.dragging canvas{cursor:grabbing;}
.hero-3d img.fallback{
  display:none;
  width:100%;max-width:520px;margin:0 auto;
  filter:drop-shadow(0 30px 60px rgba(0,0,0,.6));
}
.hero-3d.no-webgl #viewer3d{display:none;}
.hero-3d.no-webgl img.fallback{display:block;}
.hero-3d-caption{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--ink-faint);
  text-align:center;
}
.hero-3d-caption b{color:var(--cool);font-weight:600;}
.hero-3d-loading{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--ink-faint);
  text-transform:uppercase;
  transition:opacity .4s;
}
.hero-3d-loading.hidden{opacity:0;pointer-events:none;}
.scroll-cue{
  position:relative;
  z-index:1;
  margin-top:10vh;
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.18em;
  color:var(--ink-faint);
}
.scroll-cue .chev{animation:bob 1.6s ease-in-out infinite;}
@keyframes bob{0%,100%{transform:translateY(0);}50%{transform:translateY(6px);}}
@media (prefers-reduced-motion:reduce){ .scroll-cue .chev{animation:none;} }

/* ---------- headings/body ---------- */
.panel h2{
  font-size:clamp(1.7rem,3.4vw,2.7rem);
  text-transform:uppercase;
  max-width:16ch;
  margin-bottom:24px;
}
.panel p{max-width:62ch;color:var(--ink-dim);font-size:1.02rem;}
.panel p + p{margin-top:16px;}
.panel-body{display:grid;grid-template-columns:1.3fr 1fr;gap:56px;align-items:start;}
@media (max-width:860px){ .panel-body{grid-template-columns:1fr;} }

.stat{
  border-left:2px solid var(--accent,var(--cool));
  padding-left:20px;
}
.stat .num{font-family:var(--font-mono);font-size:clamp(2.6rem,5vw,4rem);color:var(--accent,var(--cool));line-height:1;}
.stat .cap{margin-top:10px;font-size:.92rem;color:var(--ink-dim);max-width:32ch;}

/* ---------- pull quote ---------- */
.quote-section{
  background:linear-gradient(135deg,var(--hot-soft),var(--bg) 55%,var(--cool-soft));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  max-width:none;
}
.quote-inner{max-width:900px;}
blockquote{
  font-family:var(--font-display);
  font-size:clamp(1.6rem,4vw,2.9rem);
  line-height:1.2;
  font-style:italic;
  text-wrap:balance;
}
.quote-note{margin-top:26px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--ink-dim);}

/* ---------- objectives ---------- */
.obj-general{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-left:3px solid var(--cool);
  padding:28px 30px;
  max-width:70ch;
  margin-bottom:44px;
}
.obj-general .tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--cool);text-transform:uppercase;}
.obj-general p{margin-top:12px;color:var(--ink);font-size:1.08rem;}
.obj-list{list-style:none;counter-reset:obj;display:flex;flex-direction:column;}
.obj-list li{
  counter-increment:obj;
  display:grid;
  grid-template-columns:52px 1fr;
  gap:20px;
  padding:18px 0;
  border-top:1px solid var(--line);
  align-items:baseline;
}
.obj-list li:last-child{border-bottom:1px solid var(--line);}
.obj-list li::before{
  content:counter(obj,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:1rem;
  color:var(--ink-faint);
}
.obj-list li span{color:var(--ink);font-size:1.02rem;}

/* ---------- gallery / tilt cards ---------- */
.gallery{display:grid;gap:22px;margin-top:40px;}
.gallery.cols-1{grid-template-columns:1fr;}
.gallery.cols-2{grid-template-columns:repeat(2,1fr);}
.gallery.cols-3{grid-template-columns:repeat(3,1fr);}
.gallery.cols-4{grid-template-columns:repeat(4,1fr);}
@media (max-width:900px){ .gallery.cols-3,.gallery.cols-4{grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .gallery.cols-2,.gallery.cols-3,.gallery.cols-4{grid-template-columns:1fr;} }

/* ---------- standalone figure + sub-heading ---------- */
.figure-block{margin-top:40px;max-width:900px;}
.figure-caption{
  margin-top:14px;
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.6;
  color:var(--ink-dim);
  max-width:70ch;
}
.figure-caption b{color:var(--ink);}
.sub-heading{
  margin-top:52px;
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--accent,var(--cool));
}
.sub-heading + .gallery{margin-top:0;}

.tilt-card{
  perspective:900px;
}
.tilt-inner{
  position:relative;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:2px;
  overflow:hidden;
  transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));
  transition:transform .35s cubic-bezier(.16,.8,.3,1), border-color .3s;
  transform-style:preserve-3d;
}
.tilt-card:hover .tilt-inner{border-color:var(--line-strong);}
.tilt-inner img{
  width:100%;
  height:var(--tile-h, 260px);
  object-fit:contain;
  object-position:center;
  background:var(--bg-raised);
  display:block;
}
.gallery.cols-4{--tile-h:200px;}
.gallery.cols-3{--tile-h:250px;}
.gallery.cols-2{--tile-h:320px;}
.gallery.cols-1{--tile-h:460px;}
.figure-block{--tile-h:420px;}
@media (max-width:900px){ .gallery.cols-3,.gallery.cols-4{--tile-h:260px;} }
@media (max-width:560px){ .gallery.cols-1,.gallery.cols-2,.gallery.cols-3,.gallery.cols-4,.figure-block{--tile-h:230px;} }
.tilt-cap{
  padding:14px 16px 16px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.02em;
  color:var(--ink-dim);
  border-top:1px solid var(--line);
}
.tilt-cap b{color:var(--ink);font-weight:600;}

/* ---------- phase framing ---------- */
.panel.phase{border-top:1px solid var(--line);}
.panel.phase.hot{--accent:var(--hot);}
.panel.phase.cool{--accent:var(--cool);}

/* ---------- data table ---------- */
.data-table-wrap{overflow-x:auto;margin-top:36px;border:1px solid var(--line);}
table{border-collapse:collapse;width:100%;min-width:560px;font-family:var(--font-mono);font-size:13px;}
thead th{
  text-align:left;
  padding:14px 18px;
  background:var(--bg-raised);
  color:var(--ink-dim);
  text-transform:uppercase;
  letter-spacing:.08em;
  font-size:11px;
  font-weight:600;
  border-bottom:1px solid var(--line);
}
tbody td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--ink);font-variant-numeric:tabular-nums;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:last-child{background:rgba(52,195,255,.05);}
td.name{font-family:var(--font-body);color:var(--ink-dim);}

/* ---------- comparison split ---------- */
.compare-split{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:2px;
  margin-top:40px;
  border:1px solid var(--line);
}
@media (max-width:700px){ .compare-split{grid-template-columns:1fr;} }
.compare-half{padding:32px;background:var(--bg-card);}
.compare-half.hot{border-top:3px solid var(--hot);}
.compare-half.cool{border-top:3px solid var(--cool);}
.compare-half .tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-dim);}
.compare-half .big{font-family:var(--font-mono);font-size:clamp(2.4rem,6vw,3.6rem);margin-top:10px;line-height:1;}
.compare-half.hot .big{color:var(--hot);}
.compare-half.cool .big{color:var(--cool);}
.compare-half .lbl{margin-top:8px;color:var(--ink-dim);font-size:.9rem;}
.compare-arrow{
  text-align:center;font-family:var(--font-mono);color:var(--ink-faint);
  font-size:12px;letter-spacing:.1em;margin-top:14px;
}

/* ---------- final ---------- */
.final-hero-img{margin-top:40px;border:1px solid var(--line);background:var(--bg-card);overflow:hidden;}
.final-hero-img img{width:100%;}

/* ---------- iteration 3D compare viewer (scroll-snap carousel) ---------- */
.iter-viewer{margin-top:40px;max-width:1180px;}
.iter-carousel{position:relative;}
.iter-grid{
  display:flex;
  gap:18px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  scroll-behavior:smooth;
  padding-bottom:4px;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  scrollbar-color:var(--line-strong) transparent;
}
.iter-grid::-webkit-scrollbar{height:6px;}
.iter-grid::-webkit-scrollbar-thumb{background:var(--line-strong);}
.iter-grid::-webkit-scrollbar-track{background:transparent;}
.iter-cell{
  flex:0 0 auto;
  width:min(320px, 78vw);
  scroll-snap-align:center;
}
.iter-cell-label{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--ink-dim);
  text-align:center;
}
.iter-nav{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  width:36px;height:36px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-card);
  border:1px solid var(--line-strong);
  color:var(--ink);
  cursor:pointer;
  font-family:var(--font-mono);
  font-size:16px;
  z-index:2;
}
.iter-nav:hover{background:var(--bg-raised);border-color:var(--cool);color:var(--cool);}
.iter-nav:focus-visible{outline:2px solid var(--cool);outline-offset:2px;}
.iter-nav.prev{left:-8px;}
.iter-nav.next{right:-8px;}
@media (max-width:700px){ .iter-nav{display:none;} }
.iter-stage{
  position:relative;
  width:100%;
  aspect-ratio:1/1;
  background:var(--bg-raised);
  border:1px solid var(--line);
}
.iter-stage .iter-canvas{width:100%;height:100%;}
.iter-stage canvas{width:100%!important;height:100%!important;display:block;cursor:grab;touch-action:pan-y;}
.iter-stage canvas:active{cursor:grabbing;}
.iter-loading{
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  color:var(--ink-faint);text-transform:uppercase;
  transition:opacity .3s;
  pointer-events:none;
}
.iter-loading.hidden{opacity:0;}

/* ---------- prototype video ---------- */
.video-block{margin-top:40px;max-width:900px;}
.video-block video{
  width:100%;
  display:block;
  border:1px solid var(--line);
  background:#000;
}

footer{
  padding:80px clamp(20px,7vw,96px) 60px;
  border-top:1px solid var(--line);
  max-width:none;
}
footer .foot-mark{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--ink-faint);text-transform:uppercase;}
footer h3{font-size:1.6rem;margin-top:14px;max-width:30ch;text-transform:uppercase;}
footer p{margin-top:14px;color:var(--ink-dim);max-width:50ch;}