:root{
  --bg:#010307;
  --bg-soft:#050a12;
  --panel:rgba(6,12,22,.68);
  --panel-strong:rgba(7,14,24,.82);
  --line:rgba(126,190,255,.16);
  --line-strong:rgba(126,190,255,.30);
  --text:#f5f8ff;
  --muted:#a9b7ca;
  --cyan:#63deff;
  --blue:#5488ff;
  --violet:#9b83ff;
  --orange:#ffac70;
  --max:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:
    radial-gradient(circle at 15% 20%,rgba(71,133,255,.14),transparent 24%),
    radial-gradient(circle at 82% 8%,rgba(131,87,255,.11),transparent 26%),
    linear-gradient(180deg,#010307 0%,#03070d 46%,#010307 100%);
  color:var(--text);
  font:16px/1.68 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  opacity:.12;
  background-image:
    linear-gradient(rgba(83,164,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(83,164,255,.055) 1px,transparent 1px);
  background-size:80px 80px;
  mask-image:linear-gradient(to bottom,black,transparent 76%);
}
a{color:inherit}
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:40;
  display:flex;
  align-items:center;
  gap:18px;
  min-height:76px;
  padding:14px max(22px,calc((100vw - var(--max))/2));
  background:linear-gradient(180deg,rgba(1,3,7,.84) 0%,rgba(1,3,7,.52) 58%,rgba(1,3,7,0) 100%);
  backdrop-filter:blur(10px) saturate(120%);
}
.brand{
  margin-right:auto;
  color:var(--text);
  font-weight:780;
  letter-spacing:.01em;
  text-decoration:none;
  white-space:nowrap;
}
.home-return,.lang{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:8px 14px;
  border:1px solid rgba(142,200,255,.20);
  border-radius:999px;
  background:rgba(255,255,255,.045);
  color:#d7e4f5;
  text-decoration:none;
  font-size:.76rem;
  font-weight:800;
  letter-spacing:.1em;
  transition:border-color .2s ease,background .2s ease,color .2s ease,transform .2s ease;
}
.home-return:hover,.lang:hover,.site-header nav a:hover{color:white;border-color:rgba(99,222,255,.58);background:rgba(99,222,255,.08);transform:translateY(-1px)}
.site-header nav{display:flex;align-items:center;gap:17px}
.site-header nav a{
  color:#c4d3e6;
  text-decoration:none;
  font-size:.88rem;
  padding:8px 0;
  transition:color .2s ease, transform .2s ease;
}
.site-header nav a:hover{transform:translateY(-1px)}
main,footer{width:min(100%,var(--max));margin-inline:auto;padding-inline:24px}
section{position:relative;padding:100px 0;border-bottom:1px solid var(--line)}
.hero-cinematic{
  position:relative;
  width:100%;
  min-height:100vh;
  border-bottom:none;
  padding:0;
  overflow:hidden;
}
.hero-media{
  position:absolute;
  inset:0;
}
.hero-video{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  transform:scale(1.02);
}
.hero-video-overlay{
  position:absolute;
  inset:0;
  background:
    linear-gradient(90deg,rgba(1,3,7,.86) 0%,rgba(1,3,7,.68) 28%,rgba(1,3,7,.34) 54%,rgba(1,3,7,.42) 100%),
    radial-gradient(circle at 74% 24%,rgba(97,222,255,.10),transparent 22%),
    radial-gradient(circle at 84% 34%,rgba(119,100,255,.12),transparent 23%),
    linear-gradient(180deg,rgba(0,0,0,.14) 0%,rgba(2,6,14,.22) 55%,rgba(1,3,7,.74) 84%,#010307 100%);
}
.hero-fade{
  position:absolute;
  left:0;right:0;bottom:0;
  height:28vh;
  background:linear-gradient(180deg,rgba(1,3,7,0) 0%,rgba(1,3,7,.82) 66%,#010307 100%);
  pointer-events:none;
  z-index:2;
}
.hero-inner{
  position:relative;
  z-index:3;
  min-height:100vh;
  display:grid;
  grid-template-columns:minmax(0,680px) 1fr;
  align-items:center;
  gap:30px;
  width:min(100%,var(--max));
  margin:0 auto;
  padding:112px 24px 110px;
}
.hero-copy{max-width:680px}
.eyebrow,.kicker{
  text-transform:uppercase;
  letter-spacing:.16em;
  color:#9ebdde;
  font-size:.76rem;
  font-weight:850;
}
.eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.eyebrow-dot{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 5px rgba(82,220,255,.10),0 0 22px rgba(82,220,255,.82);animation:pulse-dot 2s ease-in-out infinite}
.hero-copy h1{
  margin:0 0 22px;
  font-size:clamp(3.4rem,7.1vw,6.8rem);
  line-height:.92;
  letter-spacing:-.06em;
  text-wrap:balance;
}
.title-line{display:block}
.title-accent{color:transparent;background:linear-gradient(96deg,#fff 5%,#8ce6ff 35%,#78a8ff 66%,#c79aff 88%,#ffbb7b 100%);background-clip:text;-webkit-background-clip:text}
.lead{margin:0;max-width:610px;color:#d8e3f2;font-size:clamp(1.03rem,1.9vw,1.25rem);line-height:1.72;text-shadow:0 12px 32px rgba(0,0,0,.55)}
.hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin:30px 0 26px}
.primary,.secondary,.ghost-button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:12px 19px;border-radius:999px;text-decoration:none;font-weight:780;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease;
}
.primary{color:#02070d;background:linear-gradient(100deg,#70e7ff 0%,#73a2ff 48%,#b58dff 75%,#ffad70 115%);box-shadow:0 12px 38px rgba(67,139,255,.22)}
.primary:hover{transform:translateY(-2px);box-shadow:0 17px 46px rgba(67,139,255,.31)}
.secondary,.ghost-button{color:#edf6ff;border:1px solid var(--line-strong);background:rgba(255,255,255,.045)}
.secondary:hover,.ghost-button:hover{transform:translateY(-2px);border-color:rgba(82,220,255,.65);background:rgba(82,220,255,.08)}
.status-row{display:flex;flex-wrap:wrap;gap:8px}
.status-row span{padding:6px 9px;border:1px solid rgba(141,180,229,.14);border-radius:999px;color:#a2b4c8;background:rgba(5,12,22,.58);font-size:.72rem;backdrop-filter:blur(8px)}
.hero-side{
  align-self:end;
  justify-self:end;
  width:min(100%,410px);
  padding-bottom:20px;
}
.hero-panel{
  padding:18px 18px 16px;
  border:1px solid rgba(140,205,255,.18);
  border-radius:22px;
  background:rgba(3,8,15,.46);
  backdrop-filter:blur(12px);
  box-shadow:0 22px 60px rgba(0,0,0,.35);
}
.hero-panel strong{display:block;font-size:.84rem;letter-spacing:.12em;text-transform:uppercase;color:#eff6ff;margin-bottom:10px}
.hero-panel p{margin:0;color:#bcd0e5;font-size:.94rem;line-height:1.72}
.hero-panel .sequence{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.hero-panel .sequence span{padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid rgba(140,205,255,.16);font-size:.72rem;color:#d9e8f7;letter-spacing:.08em}
.scroll-cue{
  position:absolute;
  left:50%;bottom:26px;transform:translateX(-50%);
  z-index:4;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  color:#d7e3f5;text-decoration:none;font-size:.73rem;letter-spacing:.18em;text-transform:uppercase;
}
.scroll-cue span:last-child{font-size:1.35rem;line-height:1;animation:bob 2s ease-in-out infinite}
.split{display:grid;grid-template-columns:minmax(240px,.75fr) minmax(0,1.25fr);gap:48px;align-items:start}
.split h2,.evidence h2,#architecture h2,.limits h2,.return-panel h2{margin:10px 0 0;font-size:clamp(1.9rem,4vw,3rem);line-height:1.08;letter-spacing:-.04em}
.split p,.limits p,.evidence li{color:#b3c3d5}
.flow{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:28px;padding:18px 22px;border:1px solid var(--line);border-radius:22px;background:rgba(8,15,25,.72);color:#d7e5f8;font-size:.82rem;letter-spacing:.09em;text-transform:uppercase}
.flow b{color:var(--cyan)}
.cards,.metrics{display:grid;gap:18px;margin-top:28px}
.cards{grid-template-columns:repeat(4,minmax(0,1fr))}
.cards article,.metrics > div,.notice,.return-panel,.hash{
  border:1px solid var(--line);
  border-radius:24px;
  background:linear-gradient(180deg,rgba(8,15,25,.78),rgba(5,10,18,.86));
  box-shadow:0 20px 55px rgba(0,0,0,.16);
}
.cards article{padding:24px}
.card-index{display:inline-block;margin-bottom:14px;color:var(--cyan);font-size:.8rem;font-weight:800;letter-spacing:.16em}
.cards h3{margin:0 0 10px;font-size:1.15rem}
.cards p{margin:0;color:#b6c4d6}
.evidence .metrics{grid-template-columns:repeat(4,minmax(0,1fr))}
.metrics > div{padding:24px;text-align:center}
.metrics strong{display:block;font-size:2rem;letter-spacing:-.05em}
.metrics span{color:#98abc2;font-size:.9rem}
.proof{margin:28px 0;padding-left:18px}
.proof li+li{margin-top:10px}
.hash{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;padding:18px 22px}
.hash span{color:#9ab0c7;text-transform:uppercase;letter-spacing:.14em;font-size:.74rem}
.hash code{word-break:break-all;color:#f2f7ff}
.notice{padding:22px;color:#c7d6e9}
.notice strong{display:block;margin-bottom:8px}
.provenance{margin-top:24px;font-size:.95rem;color:#9eb3ca}
.return-panel{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:30px}
.return-button{white-space:nowrap}
footer{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;padding-block:28px 44px;color:#aebcd0;font-size:.94rem;border-bottom:none}
footer strong{display:block;color:#eef5ff}
footer span{display:block}
.mini-links{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:16px}
.mini-links a{text-decoration:none;color:#c3d4e7}
@keyframes pulse-dot{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.16);opacity:.76}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}
@media (max-width:1080px){
  .site-header{flex-wrap:wrap;gap:12px 16px;padding-bottom:14px}
  .site-header nav{order:4;width:100%;overflow:auto;padding-bottom:4px}
  .hero-inner{grid-template-columns:1fr;align-items:end;padding-top:128px;padding-bottom:110px}
  .hero-side{justify-self:start;width:min(100%,520px);padding-bottom:0}
  .split,.cards,.evidence .metrics,.return-panel,footer{grid-template-columns:1fr}
}
@media (max-width:720px){
  main,footer{padding-inline:18px}
  section{padding:76px 0}
  .hero-copy h1{font-size:clamp(2.7rem,15vw,4.5rem)}
  .lead{font-size:1rem}
  .hero-actions,.status-row,.mini-links{gap:10px}
  .hero-panel{padding:16px}
  .scroll-cue{bottom:18px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .eyebrow-dot,.scroll-cue span:last-child{animation:none}
}