:root{
  --void:#04060F;
  --deep:#0A1020;
  --panel:rgba(255,255,255,.03);
  --line:rgba(255,255,255,.06);
  --line-strong:rgba(255,255,255,.14);
  --star:#e6e3dc;
  --dim:#8b887d;
  --gold:#c4a86a;
  --gold-soft:rgba(196,168,106,.14);
  --cyan:#6FD6E8;
  --serif:'Instrument Serif','Noto Serif SC',Georgia,serif;
  --display:'Space Grotesk','Noto Sans SC',sans-serif;
  --body:'IBM Plex Sans','Noto Sans SC',sans-serif;
  --mono:'SF Mono','JetBrains Mono','Cascadia Code','IBM Plex Mono',monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--void);
  color:var(--star);
  font-family:var(--body);
  font-weight:400;
  line-height:1.6;
  overflow-x:hidden;
}
::selection{background:var(--gold);color:var(--void)}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.15}
.mono{font-family:var(--mono)}

/* ---------- starfield ---------- */
#stars{position:fixed;inset:0;z-index:0;pointer-events:none}
.veil{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(1100px 600px at 78% -10%, rgba(196,168,106,.08), transparent 65%),
    radial-gradient(900px 700px at 8% 108%, rgba(196,168,106,.04), transparent 60%);
}
main,header,footer{position:relative;z-index:1}

/* ---------- nav ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 5vw;
  background:linear-gradient(rgba(4,6,15,.85),rgba(4,6,15,0));
  backdrop-filter:blur(6px);
}
.brand{display:flex;align-items:center;gap:12px}
.brand svg{width:34px;height:34px}
.brand-name{font-family:var(--display);font-weight:600;letter-spacing:.14em;font-size:15px}
nav{display:flex;align-items:center;gap:34px;font-size:13.5px;letter-spacing:.06em}
nav a{color:var(--dim);transition:color .25s}
nav a:hover,nav a:focus-visible{color:var(--star)}
nav a:focus-visible{outline:1px solid var(--gold);outline-offset:4px}
.lang-btn{
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;
  color:var(--star);background:transparent;border:1px solid var(--line-strong);
  border-radius:999px;padding:7px 16px;cursor:pointer;transition:border-color .25s,background .25s;
}
.lang-btn:hover{border-color:var(--gold);background:var(--gold-soft)}
.lang-btn:focus-visible{outline:1px solid var(--gold);outline-offset:3px}
@media(max-width:820px){nav .navlink{display:none}}

/* ---------- hero ---------- */
.hero{
  min-height:100vh;display:flex;flex-direction:column;justify-content:center;
  padding:140px 8vw 90px;position:relative;
}
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.32em;text-transform:uppercase;
  color:var(--gold);margin-bottom:26px;
}
.hero h1{
  font-family:var(--serif);
  font-size:clamp(3.8rem,9vw,7rem);
  font-weight:400;letter-spacing:-.03em;line-height:1.02;margin-bottom:32px;
  white-space:nowrap;
}
.hero h1 .accent{
  color:var(--gold);font-style:italic;
}
html[lang="zh-CN"] .hero h1{
  font-size:clamp(3.2rem,7.5vw,5.8rem);letter-spacing:.02em;
}
.hero .sub{
  max-width:56ch;color:var(--dim);font-size:clamp(15px,1.35vw,18px);
  margin-top:30px;
}
.hero-cta{display:flex;gap:18px;margin-top:52px;flex-wrap:wrap}
.btn{
  font-family:var(--display);font-size:14px;letter-spacing:.08em;
  padding:14px 30px;border-radius:999px;transition:all .3s;display:inline-block;
}
.btn-solid{background:var(--gold);color:#1b1508;font-weight:600}
.btn-solid:hover{box-shadow:0 0 34px rgba(232,197,116,.4);transform:translateY(-1px)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--star)}
.btn-ghost:hover{border-color:var(--gold);background:var(--gold-soft)}
.btn:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
.hero-mark{
  position:absolute;right:6vw;top:50%;transform:translateY(-50%);
  width:min(34vw,420px);opacity:.9;pointer-events:none;
}
@media(max-width:980px){.hero-mark{display:none}}
.scroll-hint{
  position:absolute;bottom:34px;left:8vw;
  font-family:var(--mono);font-size:11px;letter-spacing:.3em;color:var(--dim);
  text-transform:uppercase;display:flex;align-items:center;gap:14px;
}
.scroll-hint::after{content:"";width:70px;height:1px;background:linear-gradient(90deg,var(--gold),transparent)}

/* ---------- sections ---------- */
section{padding:110px 8vw;border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:baseline;gap:26px;margin-bottom:16px;flex-wrap:wrap}
.sec-tag{font-family:var(--mono);font-size:0.72rem;letter-spacing:.12em;color:#c4a86a;text-transform:uppercase;white-space:nowrap}
.sec-head h2{font-size:clamp(28px,3.4vw,46px);letter-spacing:-.01em}
.sec-lede{color:var(--dim);max-width:64ch;margin-bottom:56px;font-size:15.5px}

/* product — MXU layout */
.mxu-layout{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-bottom:56px;align-items:stretch}
@media(max-width:860px){.mxu-layout{grid-template-columns:1fr}}

.mxu-visual{position:relative;display:flex}
.matrix-panel{border:1px solid var(--line);border-radius:14px;background:var(--panel);overflow:hidden;flex:1;display:flex;flex-direction:column}
.panel-topbar{
  display:flex;align-items:center;gap:14px;padding:0 16px;min-height:46px;
  border-bottom:1px solid var(--line);color:var(--dim);font-size:12px;font-family:var(--mono);
}
.panel-dots{display:flex;gap:6px}
.panel-dots span{width:7px;height:7px;border-radius:50%;background:var(--dim)}
.panel-dots span:nth-child(1){background:#e0556a}
.panel-dots span:nth-child(2){background:var(--gold)}
.panel-dots span:nth-child(3){background:var(--cyan)}

/* animated MXU grid */
.array-grid{
  display:grid;grid-template-columns:repeat(16,1fr);gap:3px;aspect-ratio:1;
  padding:14px;border-bottom:1px solid var(--line);
  background:radial-gradient(circle at 30% 20%,rgba(196,168,106,.08),transparent 40%);
}
.array-grid span{
  min-width:0;border-radius:2px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.05);
  animation:cellPulse 2.8s ease-in-out infinite;animation-delay:calc(var(--i)*24ms);
}
.array-grid span:nth-child(5n){background:rgba(196,168,106,.22)}
.array-grid span:nth-child(11n){background:rgba(111,214,232,.18)}
.array-grid span:nth-child(17n){background:rgba(196,168,106,.3)}
@keyframes cellPulse{
  0%,100%{opacity:.45;transform:scale(1)}
  50%{opacity:1;transform:scale(.82)}
}

.matrix-stats{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line)}
.mstat{padding:16px;background:var(--panel)}
.mstat-val{display:block;font-family:var(--display);font-size:22px;font-weight:600;color:var(--star)}
.mstat-lbl{font-family:var(--mono);font-size:11px;color:var(--dim);margin-top:4px;display:block}

/* spec bars */
.mxu-specs{
  border:1px solid var(--line);border-radius:14px;background:var(--panel);overflow:hidden;
  display:flex;flex-direction:column;
}
.specs-title{
  font-family:var(--mono);font-size:12px;color:var(--gold);letter-spacing:.12em;text-transform:uppercase;
  padding:16px 20px;border-bottom:1px solid var(--line);font-weight:400;
}
.spec-list{display:flex;flex-direction:column;flex:1}
.spec-bar{
  flex:1;min-height:68px;padding:14px 20px;
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  position:relative;overflow:hidden;
}
.spec-bar:last-child{border-bottom:none}
.spec-bar::before{
  content:"";position:absolute;inset:0 auto 0 0;
  width:var(--h);
  background:linear-gradient(90deg,rgba(196,168,106,.12),transparent);
}
.spec-bar .spec-size,.spec-bar .spec-gates{position:relative;z-index:1}
.spec-bar .spec-size{font-family:var(--display);font-size:19px;font-weight:600;white-space:nowrap}
.spec-bar .spec-gates{font-family:var(--mono);font-size:11.5px;color:var(--dim);text-align:right}

.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin-bottom:56px}
.metric{
  border:1px solid var(--line);border-left:2px solid var(--gold);
  border-radius:0 12px 12px 0;padding:22px 24px;background:rgba(255,255,255,.02);
}
.metric .m-name{font-family:var(--mono);font-size:15px;color:var(--star)}
.metric .m-star{color:var(--gold);font-size:13px;margin-left:6px}
.metric .m-desc{font-size:13px;color:var(--dim);margin-top:8px}
.practice{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}
.practice-item{
  display:flex;gap:16px;align-items:flex-start;border:1px solid var(--line);
  border-radius:14px;padding:24px;background:var(--panel);
}
.practice-item .spark{color:var(--gold);font-size:18px;line-height:1.5}

/* chip showcase */
.chip-showcase{margin-top:56px;text-align:center}
.chip-img{
  display:block;width:100%;max-width:640px;height:auto;border-radius:14px;cursor:zoom-in;
  margin:0 auto;
  border:1px solid var(--line);transition:transform .3s,box-shadow .3s;
  box-shadow:0 0 60px rgba(196,168,106,.08);
}
.chip-img:hover{box-shadow:0 0 80px rgba(196,168,106,.18)}
.chip-caption{
  margin-top:16px;color:var(--dim);font-size:13px;font-family:var(--mono);
}

/* lightbox */
.lightbox{
  position:fixed;inset:0;z-index:999;
  background:rgba(4,6,15,.92);backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;
  cursor:zoom-out;opacity:0;pointer-events:none;transition:opacity .3s;
}
.lightbox.open{opacity:1;pointer-events:auto}
.lightbox img{max-width:92vw;max-height:92vh;border-radius:14px;box-shadow:0 0 120px rgba(196,168,106,.2)}
.practice-item p{font-size:14.5px;color:var(--dim)}

/* verification chart */
.badge{
  display:inline-block;font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;
  color:var(--gold);border:1px solid rgba(232,197,116,.4);border-radius:999px;
  padding:6px 16px;margin-bottom:44px;background:var(--gold-soft);
}
.chart{display:flex;flex-direction:column;gap:34px;max-width:900px}
.row{display:grid;grid-template-columns:170px 1fr;gap:22px;align-items:center}
@media(max-width:640px){.row{grid-template-columns:1fr;gap:8px}}
.row .r-label{font-family:var(--mono);font-size:13px;color:var(--dim);text-align:right}
@media(max-width:640px){.row .r-label{text-align:left}}
.trail-wrap{position:relative;height:26px}
.trail{
  height:8px;border-radius:999px;position:relative;top:9px;
  transform-origin:left;transform:scaleX(0);transition:transform 1.4s cubic-bezier(.22,.9,.3,1);
}
.trail::after{
  content:"";position:absolute;right:-5px;top:50%;transform:translate(0,-50%);
  width:16px;height:16px;border-radius:50%;
}
.t1{width:44%;background:linear-gradient(90deg,transparent,rgba(139,136,125,.7))}
.t1::after{background:#8b887d;box-shadow:0 0 14px rgba(139,136,125,.8)}
.t2{width:74%;background:linear-gradient(90deg,transparent,rgba(111,214,232,.8))}
.t2::after{background:var(--cyan);box-shadow:0 0 18px rgba(111,214,232,.9)}
.t3{width:100%;background:linear-gradient(90deg,transparent,var(--gold))}
.t3::after{background:var(--gold);box-shadow:0 0 26px rgba(232,197,116,1)}
.row.inview .trail{transform:scaleX(1)}
.r-mult{font-family:var(--mono);font-size:12px;color:var(--dim);margin-top:2px}
.chart-note{font-size:12.5px;color:var(--dim);margin-top:30px;font-family:var(--mono)}

/* roadmap */
.orbit-wrap{display:grid;grid-template-columns:minmax(300px,460px) 1fr;gap:70px;align-items:center}
@media(max-width:960px){.orbit-wrap{grid-template-columns:1fr}}
.orbit-svg{width:100%;height:auto}
.orb{transform-origin:230px 230px}
.o1{animation:orbitSpin 60s linear infinite}
.o2{animation:orbitSpin 48s linear infinite}
.o3{animation:orbitSpin 36s linear infinite}
@keyframes orbitSpin{to{transform:rotate(360deg)}}
.road-list{display:flex;flex-direction:column;gap:14px}
.road-item{border:1px solid var(--line);border-radius:14px;padding:26px 28px;background:var(--panel);transition:border-color .3s}
.road-item:hover{border-color:var(--gold)}
.road-item h3{font-size:18px;margin-bottom:8px}
.road-item p{font-size:14px;color:var(--dim)}
.leap{
  margin-top:70px;border:1px solid var(--line);border-radius:18px;
  padding:56px 8%;text-align:center;background:
    radial-gradient(600px 200px at 50% 0%,rgba(232,197,116,.08),transparent),var(--panel);
}
.leap .path{
  display:flex;align-items:center;justify-content:center;gap:26px;flex-wrap:wrap;
  font-family:var(--display);font-size:clamp(30px,4.6vw,58px);font-weight:700;letter-spacing:.02em;
}
.leap .arrow{color:var(--gold);font-weight:400}
.leap .asi{color:transparent;background:linear-gradient(100deg,var(--gold),#fff3d0);-webkit-background-clip:text;background-clip:text}
.leap p{color:var(--dim);margin-top:20px;font-size:15px}
.leap .kw{font-family:var(--mono);color:var(--cyan);font-size:14px}
.leap-mission{color:var(--dim);margin-top:16px;font-size:15px;max-width:56ch;margin-left:auto;margin-right:auto}

/* team */
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.team-card{
  border:1px solid var(--line);border-radius:16px;padding:38px 30px;background:var(--panel);
  transition:transform .3s,border-color .3s;
}
.team-card:hover{transform:translateY(-4px);border-color:var(--gold)}
.team-card .glyph{font-size:0.68rem;color:var(--gold);margin-bottom:18px;font-family:var(--mono);letter-spacing:.12em;text-transform:uppercase}
.team-card h3{font-size:19px;margin-bottom:10px}
.team-card p{font-size:14px;color:var(--dim)}

/* footer */
footer{border-top:1px solid var(--line);padding:80px 8vw 50px;text-align:center}
footer .f-mark{width:48px;margin:0 auto 24px}
footer .f-line{font-family:var(--display);font-size:20px;letter-spacing:.04em;margin-bottom:14px}
footer a.mail{
  font-family:var(--mono);font-size:14px;color:var(--gold);
  border-bottom:1px solid transparent;transition:border-color .3s;
}
footer a.mail:hover{border-color:var(--gold)}
footer .copy{color:var(--dim);font-size:12px;margin-top:44px;font-family:var(--mono);letter-spacing:.08em}
footer .icp{display:inline-block;margin-top:10px;color:var(--dim);font-size:11px;font-family:var(--mono);transition:color .25s}
footer .icp:hover{color:var(--gold)}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s ease,transform .9s ease}
.reveal.inview{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .trail{transform:scaleX(1)!important}
}