:root{
  --carbon:#060809; --carbon-2:#0b0f11; --panel:#10161a;
  --beam:#3fd9ff; --beam-soft:rgba(63,217,255,.35); --white:#eef4f6;
  --text:#eef4f6; --text-2:#93a6ae; --text-3:#5b6b72; --line:#1c262b;
  --display:'Michroma',sans-serif; --sans:'Inter',system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html.lenis{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}
body{
  font-family:var(--sans);background:var(--carbon);color:var(--text);
  font-size:16px;line-height:1.65;font-weight:300;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
::selection{background:var(--beam-soft)}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--display);line-height:1.16;letter-spacing:.04em;text-transform:uppercase;font-weight:400}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .4s,border-color .4s;border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(6,8,9,.9);backdrop-filter:blur(14px);border-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:78px}
.brand{font-family:var(--display);font-size:17px;letter-spacing:.34em;display:flex;align-items:center;gap:12px}
.brand .mark{width:26px;height:26px;border:2px solid var(--beam);transform:rotate(45deg);position:relative}
.brand .mark::after{content:'';position:absolute;inset:6px;background:var(--beam)}
.nav-links{display:flex;gap:38px}
.nav-links a{font-size:12px;letter-spacing:.26em;text-transform:uppercase;color:var(--text-2);transition:color .3s}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--beam)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;
  padding:16px 36px;font-family:var(--display);font-size:11.5px;letter-spacing:.24em;
  text-transform:uppercase;transition:all .3s;
  clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px);
}
.btn:focus-visible{outline:2px solid var(--beam);outline-offset:3px}
.btn-beam{background:linear-gradient(100deg,var(--beam),#1893b8);color:#03181f}
.btn-beam:hover{transform:translateY(-2px);box-shadow:0 14px 44px rgba(63,217,255,.4)}
.btn-line{border:1px solid rgba(238,244,246,.3);color:var(--white)}
.btn-line:hover{border-color:var(--beam);color:var(--beam)}
.menu-btn{display:none;width:44px;height:44px;align-items:center;justify-content:center}

/* hero + WebGL */
.hero{position:relative;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;justify-content:center;overflow:hidden}
#streaks{position:absolute;inset:0;width:100%;height:100%;display:block}
.streaks-fallback{position:absolute;inset:0;background:linear-gradient(180deg,#0a1418,var(--carbon) 70%);display:none}
.no-webgl .streaks-fallback{display:block}
.no-webgl #streaks{display:none}
.hero-in{position:relative;z-index:2;text-align:center;padding-top:104px}
.hero-kicker{
  display:inline-flex;align-items:center;gap:16px;font-family:var(--display);font-size:11px;
  letter-spacing:.5em;text-transform:uppercase;color:var(--beam);margin-bottom:30px;
}
.hero h1{font-size:clamp(40px,7.6vw,104px);margin-bottom:18px}
.hero h1 .line{display:block;overflow:hidden}
.hero h1 .line span{display:inline-block}
.hero .sub{font-size:clamp(15px,1.7vw,18px);color:var(--text-2);max-width:520px;margin:0 auto 40px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:48px}
.car-wrap{position:relative;z-index:2;margin:0 auto;max-width:1080px;padding:0 24px;width:100%}
#car{
  width:100%;border-radius:18px;will-change:transform;
  box-shadow:0 60px 120px rgba(0,0,0,.75);
  -webkit-mask-image:linear-gradient(180deg,#000 78%,transparent);
  mask-image:linear-gradient(180deg,#000 78%,transparent);
}
.hero-hint{
  position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:3;
  font-size:10.5px;letter-spacing:.44em;text-transform:uppercase;color:var(--text-3);
}

/* paint shop */
.paint{position:relative;z-index:3;display:flex;justify-content:center;gap:14px;padding:26px 0 8px;align-items:center}
.paint .p-label{font-family:var(--display);font-size:10.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--text-3);margin-right:8px}
.swatch{
  width:38px;height:38px;border-radius:50%;border:2px solid transparent;cursor:pointer;
  transition:transform .25s,border-color .25s;position:relative;
}
.swatch:hover{transform:scale(1.12)}
.swatch.on{border-color:var(--white);transform:scale(1.12)}
.swatch:focus-visible{outline:2px solid var(--white);outline-offset:3px}

/* sections */
.section{padding:120px 0;position:relative}
.kicker{font-family:var(--display);font-size:11px;letter-spacing:.44em;text-transform:uppercase;color:var(--beam);margin-bottom:22px;display:block}
h2{font-size:clamp(26px,4vw,52px);margin-bottom:22px}
h2 .beam{color:var(--beam)}

/* specs */
.specs{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.spec{background:var(--carbon);padding:52px 30px;text-align:center;transition:background .4s}
.spec:hover{background:var(--carbon-2)}
.spec .s-num{font-family:var(--display);font-size:clamp(30px,3.8vw,50px);color:var(--white);font-variant-numeric:tabular-nums}
.spec .s-num small{font-size:.4em;color:var(--beam);letter-spacing:.1em}
.spec .s-label{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--text-3);margin-top:12px}

/* design */
.design-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:72px;align-items:center}
.design-img{position:relative;overflow:hidden;clip-path:inset(10% 6% 10% 6%)}
.design-img img{width:100%;aspect-ratio:1;object-fit:cover;transform:scale(1.15);will-change:transform}
.design-text p{color:var(--text-2);margin-bottom:18px}
.d-feats{display:grid;gap:0;margin-top:36px}
.d-feat{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.d-feat:last-child{border-bottom:none}
.d-feat svg{width:22px;height:22px;stroke:var(--beam);flex:none;margin-top:3px}
.d-feat .t{font-weight:500;font-size:15.5px;margin-bottom:4px}
.d-feat .s{font-size:14px;color:var(--text-2)}

/* tech grid */
.tech{background:var(--carbon-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:60px}
.t-card{
  background:var(--panel);border:1px solid var(--line);padding:38px 32px;
  transition:border-color .35s,transform .35s;
  clip-path:polygon(18px 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%,0 18px);
}
.t-card:hover{border-color:var(--beam);transform:translateY(-5px)}
.t-card .n{font-family:var(--display);font-size:12px;color:var(--beam);margin-bottom:20px;letter-spacing:.2em}
.t-card h3{font-size:16px;margin-bottom:12px;letter-spacing:.06em}
.t-card p{font-size:14px;color:var(--text-2)}

/* cta */
.cta{text-align:center}
.cta p{color:var(--text-2);max-width:460px;margin:0 auto 40px}
.cta-form{display:flex;gap:12px;max-width:480px;margin:0 auto;flex-wrap:wrap}
.cta-form input{
  flex:1;min-width:220px;background:var(--panel);border:1px solid var(--line);
  padding:15px 20px;font:inherit;font-size:15px;color:var(--white);min-height:52px;
}
.cta-form input:focus{outline:none;border-color:var(--beam)}
.cta-form input::placeholder{color:var(--text-3)}
.cta-msg{font-size:14px;margin-top:16px;display:none}
.cta-msg.ok{display:block;color:var(--beam)}
.cta-msg.err{display:block;color:#ff9d7a}

/* footer */
footer{border-top:1px solid var(--line);padding:56px 0 42px}
.foot{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.foot-links{display:flex;gap:30px;flex-wrap:wrap}
.foot-links a{font-size:11.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--text-2)}
.foot-links a:hover{color:var(--beam)}
.foot-bottom{margin-top:40px;font-size:12.5px;color:var(--text-3);display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

@media (max-width:1020px){
  .specs{grid-template-columns:1fr 1fr}
  .design-grid{grid-template-columns:1fr;gap:48px}
  .tech-grid{grid-template-columns:1fr;max-width:460px;margin-left:auto;margin-right:auto}
  .nav-links{display:none}
  .nav-links.open{
    display:flex;flex-direction:column;position:absolute;top:78px;left:0;right:0;
    background:rgba(6,8,9,.97);padding:28px 24px;gap:22px;border-bottom:1px solid var(--line);
  }
  .menu-btn{display:flex}
  .nav .btn{display:none}
}
@media (max-width:560px){
  .specs{grid-template-columns:1fr}
  .section{padding:88px 0}
}

/* ---- cross-document View Transitions (progressive enhancement) ---- */
@media (prefers-reduced-motion:no-preference){
  @view-transition{navigation:auto}
  .hero{view-transition-name:page-hero}
  ::view-transition-old(page-hero),::view-transition-new(page-hero){
    animation-duration:.45s;animation-timing-function:cubic-bezier(.4,0,.2,1);
  }
  ::view-transition-old(root),::view-transition-new(root){animation-duration:.35s}
}