:root{
  --accent:#7aa2ff;
  --accent-soft:rgba(122,162,255,.5);
  --ink:#eef3ff;
  --ink-dim:#9fb1d6;
  --ink-faint:#6f82ad;
  --bg:#04060e;
  --sans:"Open Sans","Segoe UI",system-ui,sans-serif;
  --mono:"IBM Plex Mono","Consolas",ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:70px}
html,body{height:100%}
body{font-family:var(--sans);font-size:16px;line-height:1.6;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
.mono{font-family:var(--mono)}
a{color:var(--accent);text-decoration:none}
canvas{display:block}
::selection{background:var(--accent);color:#04060e}
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-thumb{background:rgba(140,165,220,.22);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(140,165,220,.4)}

/* ---------- boot ---------- */
.boot{position:fixed;inset:0;z-index:1000;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:radial-gradient(130% 130% at 50% 38%, #0a1430, #050a1c 60%, #02040c);cursor:pointer;
  transition:opacity .7s ease, visibility .7s}
.boot.gone{opacity:0;visibility:hidden;pointer-events:none}
.boot-inner{display:flex;flex-direction:column;align-items:center;gap:18px;
  animation:bootIn .9s cubic-bezier(.2,.8,.2,1) both;transition:transform .7s ease,filter .7s ease,opacity .7s ease}
.boot.gone .boot-inner{transform:scale(1.14);filter:blur(7px);opacity:0}
@keyframes bootIn{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}
.boot-3d{position:relative;width:172px;height:172px;display:flex;align-items:center;justify-content:center;
  perspective:760px;filter:drop-shadow(0 0 26px rgba(123,162,255,.4));animation:gyroIn 1s cubic-bezier(.2,.8,.2,1) both}
.gyro{position:relative;width:150px;height:150px;transform-style:preserve-3d;animation:gyroSpin 14s linear infinite}
.gyro .ring{position:absolute;inset:0;border-radius:50%;border:1.6px solid rgba(124,196,255,.5);
  box-shadow:0 0 16px rgba(91,200,255,.2), inset 0 0 16px rgba(91,200,255,.1)}
.ring.r1{transform:rotateY(0deg)}
.ring.r2{transform:rotateY(36deg)}
.ring.r3{transform:rotateY(72deg)}
.ring.r4{transform:rotateY(108deg)}
.ring.r5{transform:rotateY(144deg)}
.ring.eq{transform:rotateX(90deg);border-color:rgba(158,255,206,.42)}
@keyframes gyroSpin{from{transform:rotateX(-16deg) rotateY(0deg)}to{transform:rotateX(-16deg) rotateY(360deg)}}
@keyframes gyroIn{from{opacity:0;transform:scale(.45)}to{opacity:1;transform:none}}
.gyro-core{position:absolute;width:20px;height:20px;border-radius:50%;
  background:radial-gradient(circle at 40% 35%, #eaf6ff, #5bc8ff 55%, rgba(91,200,255,0) 76%);
  box-shadow:0 0 24px 5px rgba(91,200,255,.55);animation:bootpulse 1.6s ease-in-out infinite}
@keyframes bootpulse{0%,100%{opacity:.55;transform:scale(.8)}50%{opacity:1;transform:scale(1.12)}}
.boot-name{font-size:25px;font-weight:700;letter-spacing:.3px;
  background:linear-gradient(100deg,#eaf4ff,#9fc0ff 45%,#7cc4ff 70%,#eaf4ff);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.boot-name span{-webkit-text-fill-color:#7cc4ff;color:#7cc4ff}
.boot-log{width:230px;min-height:80px;display:flex;flex-direction:column;gap:3px;font-size:11px;color:#6f87ad;letter-spacing:.3px;text-align:left}
.boot-log .bl{opacity:0;transform:translateX(-5px);animation:blIn .35s ease forwards}
.boot-log .bl b{color:#9fb6d8;font-weight:400}
.boot-log .bl.ok{color:#8fe388}
@keyframes blIn{to{opacity:1;transform:none}}
.boot-foot{display:flex;align-items:center;gap:12px}
.boot-bar{width:200px;height:4px;border-radius:6px;background:rgba(255,255,255,.12);overflow:hidden}
.boot-bar i{display:block;height:100%;width:0;border-radius:6px;box-shadow:0 0 12px rgba(123,162,255,.7);
  background:linear-gradient(90deg,#7ee7b8,#5bc8ff,#9b8cff);animation:bootfill 2.4s cubic-bezier(.4,0,.2,1) .2s forwards}
@keyframes bootfill{to{width:100%}}
.boot-pct{font-size:11px;color:#9fb6d8;min-width:36px;text-align:right;font-variant-numeric:tabular-nums}
.boot-skip{position:absolute;bottom:26px;font-size:10.5px;color:#5a738f;letter-spacing:1.5px;opacity:0;animation:bootIn .6s 1.6s forwards}

/* ---------- 3D background ---------- */
.wallpaper{position:fixed;inset:0;z-index:0;background:#04060e}
#space{width:100%;height:100%}
.wallpaper.no-webgl{background:radial-gradient(60% 50% at 62% 42%, rgba(40,70,170,.4), transparent 70%), #060a18}

/* ---------- nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:60;height:64px;display:flex;align-items:center;justify-content:space-between;
  padding:0 clamp(16px,4vw,48px)}
.nav-brand{font-weight:700;letter-spacing:.3px;color:#eaf2ff;text-shadow:0 0 16px var(--accent-soft);transition:text-shadow .5s}
.nav-right{display:flex;align-items:center;gap:16px}
.nav-lang{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);color:var(--ink-dim);
  font-family:var(--mono);font-size:12px;padding:5px 11px;border-radius:20px;cursor:pointer;font-weight:600;transition:border-color .2s}
.nav-lang:hover{border-color:var(--accent-soft)}
.nav-lang [data-lang].on{color:var(--accent)}
.nav-cta{font-size:13px;font-weight:600;color:#eaf2ff;border:1px solid var(--accent-soft);padding:8px 16px;border-radius:22px;
  transition:background .2s,box-shadow .2s,color .2s}
.nav-cta:hover{background:var(--accent-soft);box-shadow:0 0 24px -6px var(--accent-soft)}

/* ---------- section dots ---------- */
.dots{position:fixed;right:26px;top:50%;transform:translateY(-50%);z-index:60;display:flex;flex-direction:column;gap:14px;list-style:none}
.dots li{width:9px;height:9px;border-radius:50%;border:1px solid rgba(255,255,255,.3);cursor:pointer;transition:background .3s,border-color .3s,box-shadow .3s,transform .3s}
.dots li:hover{transform:scale(1.25)}
.dots li.on{background:var(--accent);border-color:var(--accent);box-shadow:0 0 12px var(--accent)}

/* ---------- sections ---------- */
.scroll{position:relative;z-index:10}
.sec{min-height:100vh;display:flex;align-items:center;padding:120px clamp(20px,7vw,150px) 110px}
.sec-inner{max-width:600px;width:100%}
.sec.hero{position:relative}
.sec.hero .sec-inner{max-width:780px}

/* reveal on scroll */
.sec-inner>*{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.sec.in .sec-inner>*{opacity:1;transform:none}
.sec.in .sec-inner>*:nth-child(2){transition-delay:.08s}
.sec.in .sec-inner>*:nth-child(3){transition-delay:.16s}
.sec.in .sec-inner>*:nth-child(4){transition-delay:.24s}
.sec.in .sec-inner>*:nth-child(5){transition-delay:.30s}

.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:3px;color:var(--accent);text-transform:uppercase;display:inline-block;transition:color .5s}
.sec-label{font-family:var(--mono);font-size:12px;letter-spacing:2px;color:var(--accent);text-transform:uppercase;display:inline-block;margin-bottom:18px;transition:color .5s}
h1{font-size:clamp(34px,6vw,70px);line-height:1.04;font-weight:700;letter-spacing:-1px;margin:18px 0 22px;
  background:linear-gradient(100deg,#fff,#cdd9ff 38%,var(--accent) 72%,#fff);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
h2{font-size:clamp(26px,4vw,46px);line-height:1.12;font-weight:700;letter-spacing:-.5px;margin-bottom:20px;color:#f2f6ff}
.sub{font-size:clamp(15px,1.6vw,19px);color:var(--ink-dim);max-width:560px;margin-bottom:30px}
.lead{font-size:clamp(15px,1.45vw,18px);color:var(--ink-dim);max-width:560px}

.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 21px;border-radius:30px;font-size:14px;font-weight:600;
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);color:#eef3ff;
  transition:transform .2s,background .2s,border-color .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);border-color:var(--accent-soft);box-shadow:0 12px 28px -10px var(--accent-soft)}
.btn-primary{background:linear-gradient(180deg,#cfe6ff,var(--accent));color:#04060e;border-color:transparent}
.btn-primary:hover{box-shadow:0 16px 34px -10px var(--accent-soft)}

.kv{display:grid;grid-template-columns:60px 1fr;gap:8px 16px;margin-top:26px;font-size:13px;color:var(--ink-dim);
  border-top:1px solid rgba(255,255,255,.1);padding-top:20px;max-width:420px}
.kv span:nth-child(odd){color:var(--accent);font-weight:600;transition:color .5s}

.caps{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin-top:28px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.09);border-radius:16px;overflow:hidden}
.cap{padding:18px 20px;background:rgba(9,14,30,.55);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:background .25s}
.cap:hover{background:rgba(16,24,46,.6)}
.cap h4{font-size:12.5px;color:var(--accent);font-family:var(--mono);margin-bottom:7px;letter-spacing:.3px;transition:color .5s}
.cap p{font-size:13px;color:var(--ink-dim)}

.timeline{display:flex;flex-direction:column;gap:18px;margin-top:26px}
.tl{padding-left:18px;border-left:2px solid var(--accent-soft);transition:border-color .5s}
.tl-when{display:block;font-size:11.5px;letter-spacing:.5px;color:var(--accent);margin-bottom:5px;transition:color .5s}
.tl strong{display:block;font-size:15.5px;color:#eef3ff;margin-bottom:5px;font-weight:700}
.tl p{font-size:14px;color:var(--ink-dim)}

.projs{display:flex;flex-direction:column;gap:14px;margin-top:28px}
.proj{padding:18px 20px;border:1px solid rgba(255,255,255,.1);border-radius:14px;background:rgba(11,17,36,.45);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:border-color .25s,transform .25s,background .25s}
.proj:hover{border-color:var(--accent-soft);transform:translateY(-3px);background:rgba(16,24,48,.55)}
.proj-h{display:flex;align-items:baseline;gap:12px;margin-bottom:6px;flex-wrap:wrap}
.proj-h strong{font-size:16px;color:#eef3ff;font-weight:700}
.proj-tag{margin-left:auto;font-family:var(--mono);font-size:10.5px;letter-spacing:.5px;color:var(--ink-faint)}
.proj p{font-size:14px;color:var(--ink-dim)}
.proj-note{margin-top:18px;font-family:var(--mono);font-size:11.5px;color:var(--ink-faint)}

.scroll-hint{position:absolute;bottom:38px;left:clamp(20px,7vw,150px);font-family:var(--mono);font-size:11px;letter-spacing:1.5px;color:var(--ink-faint);
  animation:hintbob 2.4s ease-in-out infinite}
@keyframes hintbob{0%,100%{transform:translateY(0)}50%{transform:translateY(5px)}}

footer{position:relative;z-index:10;text-align:center;padding:36px 20px 56px;color:var(--ink-faint);font-size:12.5px;font-family:var(--mono)}

/* ---------- responsive ---------- */
@media(max-width:680px){
  .caps{grid-template-columns:1fr}
  .sec{padding:100px 22px 80px}
  .nav-cta{display:none}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important}
  .sec-inner>*{opacity:1;transform:none}
}