:root{
  --carbon:#080A0D;
  --graphite:#252A30;
  --blue:#1677C8;
  --lime:#B7E21C;
  --white:#FFFFFF;
  --muted:#A7ADB5;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:#000;color:var(--white);font-family:Arial,Helvetica,sans-serif}
body{overflow-x:hidden}
.entry{
  min-height:100svh;
  position:relative;
  isolation:isolate;
  display:grid;
  place-items:center;
  background:
    radial-gradient(circle at 50% 44%,rgba(22,119,200,.12),transparent 38%),
    linear-gradient(180deg,#030405 0%,#080A0D 52%,#020303 100%);
}
.ambient{
  position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:
    linear-gradient(90deg,transparent 0 49.8%,rgba(183,226,28,.035) 50%,transparent 50.2%),
    radial-gradient(circle at 50% 50%,transparent 0 54%,rgba(0,0,0,.65) 83%);
}
.stage{
  width:min(1180px,94vw);
  min-height:100svh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  position:relative;
  padding:28px 0 34px;
}
.video-shell{
  width:min(1040px,90vw);
  aspect-ratio:16/9;
  position:relative;
  overflow:hidden;
  background:#040506;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 28px 90px rgba(0,0,0,.68),0 0 60px rgba(22,119,200,.06);
}
.matrix-video{width:100%;height:100%;display:block;object-fit:cover}
.video-vignette{
  position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(0,0,0,.15),transparent 30%,transparent 67%,rgba(0,0,0,.74) 100%),
    radial-gradient(circle at center,transparent 36%,rgba(0,0,0,.35) 100%);
}
.story{
  position:absolute;
  inset:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  pointer-events:none;
  text-align:center;
  padding:5vh 5vw 18vh;
}
.signal,.master-line{
  position:absolute;
  opacity:0;
  transform:translateY(10px);
  transition:opacity .9s ease, transform .9s ease;
  text-shadow:0 2px 22px #000,0 2px 5px #000;
}
.signal{
  margin:0;
  font-size:clamp(17px,2.15vw,31px);
  letter-spacing:.18em;
  font-weight:500;
}
.signal span{font-weight:800}
.signal-one span{color:var(--blue)}
.signal-two span{color:var(--lime)}
.signal.visible,.master-line.visible{opacity:1;transform:translateY(0)}
.signal.faded,.master-line.faded{opacity:0;transform:translateY(-8px)}
.master-line{width:min(900px,86vw)}
.master-line h1{
  margin:0 0 10px;
  font-size:clamp(27px,4vw,58px);
  letter-spacing:.045em;
  line-height:1.03;
  font-weight:600;
}
.master-line p{
  margin:0;
  font-size:clamp(21px,3.1vw,44px);
  letter-spacing:.07em;
  line-height:1.05;
  font-weight:400;
}
.master-line strong{color:var(--lime);font-weight:850}
.enter-button{
  position:absolute;
  left:50%;bottom:7.5vh;
  transform:translate(-50%,12px);
  opacity:0;
  min-width:min(390px,78vw);
  padding:18px 28px;
  display:flex;
  justify-content:center;
  align-items:center;
  gap:20px;
  border:1px solid rgba(183,226,28,.8);
  background:rgba(5,7,8,.7);
  color:#fff;
  text-decoration:none;
  font-size:clamp(17px,1.55vw,22px);
  font-weight:750;
  letter-spacing:.12em;
  backdrop-filter:blur(8px);
  box-shadow:inset 0 0 0 1px rgba(183,226,28,.06),0 0 0 rgba(183,226,28,0);
  transition:opacity .7s ease,transform .7s ease,background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.enter-button.visible{opacity:1;transform:translate(-50%,0)}
.enter-button:hover,
.enter-button:focus-visible{
  background:rgba(183,226,28,.1);
  border-color:var(--lime);
  box-shadow:0 0 34px rgba(183,226,28,.12);
  outline:none;
}
.enter-button .arrow{color:var(--lime);font-size:1.35em;transition:transform .25s ease}
.enter-button:hover .arrow{transform:translateX(6px)}
.utility-controls{
  position:absolute;
  right:calc((100% - min(1040px,90vw))/2 + 12px);
  bottom:2.5vh;
  display:flex;align-items:center;gap:12px;
  opacity:.66;
}
.utility-controls button{
  appearance:none;border:0;background:none;color:#fff;cursor:pointer;
  font-size:11px;letter-spacing:.12em;padding:7px 2px;
}
.utility-controls button:hover{color:var(--lime)}
.divider{width:1px;height:12px;background:rgba(255,255,255,.25)}
.prototype-note{
  position:absolute;
  left:50%;bottom:1.1vh;transform:translateX(-50%);
  margin:0;width:min(720px,90vw);text-align:center;
  color:rgba(255,255,255,.34);font-size:9px;letter-spacing:.04em;
}
@media(max-width:760px){
  .stage{justify-content:flex-start;padding-top:10vh}
  .video-shell{width:94vw;aspect-ratio:10/13}
  .matrix-video{object-fit:cover;object-position:center}
  .story{padding:12vh 5vw 25vh}
  .signal{width:86vw;font-size:17px;letter-spacing:.11em;line-height:1.45}
  .master-line{width:88vw}
  .master-line h1{font-size:30px;line-height:1.08}
  .master-line p{font-size:24px;line-height:1.12}
  .enter-button{bottom:11vh;min-width:82vw;padding:17px 20px;font-size:16px;letter-spacing:.09em}
  .utility-controls{right:5vw;bottom:5.8vh}
  .prototype-note{bottom:1.8vh;font-size:8px}
}
@media(prefers-reduced-motion:reduce){
  .signal,.master-line,.enter-button{transition:none}
}