/* =========================================================
   HELIOS POWER SYSTEM — 2.0
   Dark, high-energy tech theme. Brand gradient taken from
   the Helios mark (gold → sky → blue).
   ========================================================= */
:root{
  --bg:#1a3a85;
  --bg-2:#1e4294;
  --panel:rgba(80,130,220,.22);
  --panel-solid:#0b1224;
  --line:rgba(120,200,255,.24);
  --line-2:rgba(120,210,255,.45);
  --ink:#ffffff;
  --mute:#c3d2ef;
  --dim:#8fa3cc;
  --cyan:#4fe0ff;
  --blue:#1f7bff;
  --violet:#8a63ff;
  --gold:#f0bd4f;
  --amber:#d98d22;
  --mint:#2bf0b0;
  --brand:linear-gradient(90deg,#d98d22 0%,#f0bd4f 30%,#5fcbf7 64%,#1aa3ec 100%);
  --volt:linear-gradient(100deg,#1f7bff 0%,#38d6ff 55%,#2bf0b0 100%);
  --sans:"Space Grotesk",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
  --r:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(1200px 800px at 10% -10%,rgba(60,160,255,.7),transparent 60%),radial-gradient(900px 700px at 95% 15%,rgba(150,110,255,.5),transparent 60%),radial-gradient(1000px 700px at 60% 110%,rgba(43,240,200,.3),transparent 60%),radial-gradient(800px 600px at 0% 80%,rgba(255,190,80,.22),transparent 60%),linear-gradient(180deg,#1d4192,#173679);background-attachment:fixed;color:var(--ink);font-family:var(--sans);font-size:19.5px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.03em;line-height:1.02}
p{margin:0}
::selection{background:var(--cyan);color:#001018}

.wrap{width:min(1240px,calc(100% - 48px));margin:0 auto;position:relative}
.mono{font-family:var(--mono)}
.grad{background:var(--brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.volt{background:var(--volt);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- global background layers ---------- */
.bg-grid{position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;opacity:.5;
  mask-image:radial-gradient(ellipse at 50% 30%,#000 10%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at 50% 30%,#000 10%,transparent 75%)}
.noise{position:fixed;inset:-50%;z-index:100;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  animation:grain 1s steps(4) infinite}
@keyframes grain{0%{transform:translate(0,0)}25%{transform:translate(-3%,2%)}50%{transform:translate(2%,-3%)}75%{transform:translate(-2%,-1%)}100%{transform:translate(1%,3%)}}
.cursor-glow{position:fixed;left:0;top:0;width:560px;height:560px;margin:-280px 0 0 -280px;border-radius:50%;pointer-events:none;z-index:-1;
  background:radial-gradient(circle,rgba(79,224,255,.24),rgba(31,123,255,.1) 40%,transparent 70%);transition:opacity .4s;will-change:transform}

/* ---------- boot loader ---------- */
.boot{position:fixed;inset:0;z-index:200;display:grid;place-items:center;background:var(--bg);transition:opacity .6s var(--ease),visibility .6s}
.boot.done{opacity:0;visibility:hidden}
.boot-inner{width:min(420px,80vw);font-family:var(--mono);font-size:14px;color:var(--mute);letter-spacing:.08em}
.boot-logo{width:84px;margin:0 auto 26px}
.boot-line{display:flex;justify-content:space-between;margin-top:6px}
.boot-line b{color:var(--cyan);font-weight:500}
.boot-bar{height:2px;margin-top:16px;background:rgba(255,255,255,.08);overflow:hidden}
.boot-bar i{display:block;height:100%;width:0;background:var(--volt);box-shadow:0 0 12px var(--cyan);transition:width .25s linear}

/* ---------- nav ---------- */
.progress{position:fixed;top:0;left:0;height:2px;width:100%;z-index:60;transform-origin:left;transform:scaleX(0);background:var(--brand);box-shadow:0 0 14px rgba(56,214,255,.8)}
nav{position:fixed;top:0;left:0;right:0;z-index:50;transition:background .3s,border-color .3s,backdrop-filter .3s;border-bottom:1px solid transparent}
nav.scrolled{background:rgba(20,44,100,.72);backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);border-color:var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:80px;gap:20px}
.brand{display:flex;align-items:center;gap:14px;font-weight:700;letter-spacing:.02em}
.brand img{width:78px;height:78px;margin:-6px -8px -6px -10px}
.brand .wm{display:block;font-size:26px;line-height:1.1;letter-spacing:.16em;background:linear-gradient(90deg,#e0aa4f 0%,#eac27a 35%,#f2e4c6 52%,#8ccddb 66%,#2797b2 100%);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 10px rgba(140,205,219,.35))}
.brand small{font-family:var(--mono);font-size:12.5px;letter-spacing:.24em;color:#d6e4ff;font-weight:500;display:block;line-height:1;margin-top:4px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{position:relative;padding:8px 12px;font-family:var(--mono);font-size:14.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);border-radius:8px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--ink);background:rgba(56,214,255,.08)}
.nav-links a.active{color:var(--cyan)}
.nav-links a.active::before{content:"";position:absolute;left:50%;bottom:2px;width:4px;height:4px;margin-left:-2px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
.nav-cta{display:flex;align-items:center;gap:10px}
.lang{display:inline-flex;border:1px solid var(--line-2);border-radius:999px;padding:2px;font-family:var(--mono);font-size:13px}
.lang a{padding:4px 9px;border-radius:999px;color:var(--mute)}
.lang a.on{background:var(--ink);color:var(--bg)}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line-2);border-radius:10px;background:transparent;color:var(--ink);cursor:pointer}
.nav-toggle span{display:block;width:18px;height:1.5px;margin:4px auto;background:currentColor;transition:transform .3s}

/* ---------- buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;gap:10px;padding:15px 26px;border-radius:999px;font-weight:600;font-size:18px;letter-spacing:.01em;cursor:pointer;border:0;overflow:hidden;isolation:isolate;transition:transform .25s var(--ease),box-shadow .25s}
.btn-primary{color:#001018;background:var(--volt);box-shadow:0 0 0 1px rgba(56,214,255,.4),0 10px 40px -8px rgba(56,214,255,.7)}
.btn-primary::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.65) 50%,transparent 70%);transform:translateX(-120%);animation:sheen 3.2s var(--ease) infinite}
@keyframes sheen{0%,55%{transform:translateX(-120%)}100%{transform:translateX(120%)}}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(56,214,255,.6),0 18px 50px -8px rgba(56,214,255,.9)}
.btn-ghost{color:var(--ink);background:rgba(255,255,255,.03);border:1px solid var(--line-2)}
.btn-ghost:hover{border-color:var(--cyan);background:rgba(56,214,255,.08);transform:translateY(-2px)}
.btn .arr{transition:transform .25s var(--ease)}
.btn:hover .arr{transform:translateX(4px)}
.btn-sm{padding:10px 18px;font-size:16px}

/* ---------- section scaffolding ---------- */
section{position:relative;padding:140px 0}
.tag{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:14px;letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
.tag::before{content:"";width:28px;height:1px;background:currentColor;box-shadow:0 0 8px currentColor}
.tag .idx{color:var(--dim)}
.h-xl{font-size:clamp(46px,9vw,148px);letter-spacing:-.045em;line-height:.92}
.h-lg{font-size:clamp(38px,6vw,84px);letter-spacing:-.04em;line-height:.98}
.h-md{font-size:clamp(28px,3.6vw,46px)}
.lead{font-size:clamp(20px,1.9vw,25px);line-height:1.55;color:var(--mute);max-width:640px}
.sec-head{display:grid;gap:24px;margin-bottom:64px}
.sec-head.split{grid-template-columns:1.3fr 1fr;align-items:end;gap:48px}

/* ---------- hero ---------- */
.hero{min-height:100vh;min-height:100svh;padding:120px 0 60px;display:flex;align-items:center;overflow:hidden}
#field{position:absolute;inset:0;width:100%;height:100%;z-index:0}

.hero .wrap{z-index:2}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);align-items:center;gap:40px}
.hero-grid>*{min-width:0}
.hero h1{margin:26px 0 0}
.hero h1 .line{display:block;overflow:hidden}
.hero h1 .line>span{display:inline-block;transform:translateY(110%);transition:transform 1.1s var(--ease)}
.ready .hero h1 .line>span{transform:none}
.ready .hero h1 .line:nth-child(2)>span{transition-delay:.12s}
.hero .lead{margin-top:28px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:40px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid var(--line);border-radius:999px;background:rgba(20,38,80,.6);backdrop-filter:blur(6px);font-family:var(--mono);font-size:13.5px;letter-spacing:.06em;color:var(--mute);text-transform:uppercase}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--mint);box-shadow:0 0 8px var(--mint);animation:blink 2s infinite}
.badge:nth-child(2) i{animation-delay:-.5s}.badge:nth-child(3) i{animation-delay:-1s}.badge:nth-child(4) i{animation-delay:-1.5s}
@keyframes blink{50%{opacity:.3}}

.wheel-stage{position:relative;aspect-ratio:1;width:100%;max-width:640px;justify-self:center}
.wheel-stage svg{width:100%;height:100%;overflow:visible}
.wheel-glow{position:absolute;inset:12%;border-radius:50%;background:radial-gradient(circle,rgba(79,224,255,.6),rgba(31,123,255,.25) 45%,transparent 70%);filter:blur(30px);animation:pulse 3s ease-in-out infinite}
@keyframes pulse{50%{opacity:.55;transform:scale(.94)}}
.spin{transform-box:view-box;transform-origin:300px 300px;animation:rot 6s linear infinite}
.spin-rev{transform-box:view-box;transform-origin:300px 300px;animation:rot 14s linear infinite reverse}
.spin-slow{transform-box:view-box;transform-origin:300px 300px;animation:rot 40s linear infinite}
.spin-fast{transform-box:view-box;transform-origin:300px 300px;animation:rot 2.2s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}
.mag{animation:magglow 1.2s ease-in-out infinite}
@keyframes magglow{50%{opacity:.6}}
.dash-flow{stroke-dasharray:6 10;animation:dash 1.2s linear infinite}
@keyframes dash{to{stroke-dashoffset:-32}}

.telemetry{position:absolute;font-family:var(--mono);font-size:13px;letter-spacing:.08em;color:var(--mute);background:rgba(24,52,115,.72);border:1px solid var(--line-2);border-radius:10px;padding:10px 12px;backdrop-filter:blur(8px);min-width:150px}
.telemetry b{display:block;margin-top:2px;font-size:22px;font-weight:500;color:var(--ink);letter-spacing:0}
.telemetry b small{font-size:13px;color:var(--cyan);margin-left:3px}
.telemetry .bar{height:3px;margin-top:8px;background:rgba(255,255,255,.08);border-radius:3px;overflow:hidden}
.telemetry .bar i{display:block;height:100%;background:var(--volt);transition:width .4s}
.t1{top:6%;left:-4%}.t2{top:42%;right:-6%}.t3{bottom:6%;left:4%}
.telemetry::before{content:"";position:absolute;top:-1px;left:-1px;width:10px;height:10px;border-top:1px solid var(--cyan);border-left:1px solid var(--cyan);border-radius:10px 0 0 0}

.scroll-cue{position:absolute;left:50%;bottom:28px;z-index:3;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:10px;font-family:var(--mono);font-size:12px;letter-spacing:.3em;color:var(--dim)}
.scroll-cue i{width:1px;height:46px;background:linear-gradient(var(--cyan),transparent);animation:cue 2s var(--ease) infinite;transform-origin:top}
@keyframes cue{0%{transform:scaleY(0)}50%{transform:scaleY(1)}100%{transform:scaleY(1);opacity:0}}

/* ---------- marquee ---------- */
.marquee{position:relative;padding:0;border-block:1px solid var(--line);background:linear-gradient(90deg,rgba(31,123,255,.08),rgba(240,189,79,.06));overflow:hidden}
.marquee.alt{transform:rotate(-2deg) scale(1.04);margin:40px 0;background:var(--volt);border:0}
.marquee.alt .track span{color:#001018}
.marquee.alt .track span::after{color:#001018}
.marquee .track{display:flex;width:max-content;animation:marq 38s linear infinite}
.marquee.alt .track{animation-duration:28s;animation-direction:reverse}
.marquee .track span{display:flex;align-items:center;gap:36px;padding:22px 36px 22px 0;font-size:clamp(22px,3vw,40px);font-weight:600;letter-spacing:-.02em;white-space:nowrap;text-transform:uppercase}
.marquee .track span::after{content:"✦";font-size:.6em;color:var(--gold)}
.marquee .track span.o{-webkit-text-stroke:1px rgba(238,244,255,.6);color:transparent}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stat{position:relative;padding:30px 26px 28px;border:1px solid var(--line);border-radius:var(--r);background:var(--panel);backdrop-filter:blur(10px);overflow:hidden}
.stat .gauge{width:88px;height:88px;margin-bottom:22px}
.stat .gauge circle{fill:none;stroke-width:6}
.stat .gauge .tr{stroke:rgba(255,255,255,.07)}
.stat .gauge .fg{stroke:url(#gg);stroke-linecap:round;stroke-dasharray:251.3;stroke-dashoffset:251.3;transition:stroke-dashoffset 2s var(--ease);transform:rotate(-90deg);transform-origin:center}
.stat .n{font-size:clamp(40px,4.2vw,62px);white-space:nowrap;font-weight:600;letter-spacing:-.05em;line-height:1}
.stat .n sup{font-size:.4em;color:var(--cyan);margin-left:4px;vertical-align:top;position:relative;top:.3em}
.stat p{margin-top:14px;color:var(--mute);font-size:18px}
.stat .k{position:absolute;top:22px;right:22px;font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;color:var(--dim)}

/* ---------- cards ---------- */
.glow-card{position:relative;border-radius:var(--r);background:var(--panel);border:1px solid var(--line);overflow:hidden;isolation:isolate;transition:transform .35s var(--ease),border-color .3s}
.glow-card::before{content:"";position:absolute;inset:0;z-index:-1;opacity:0;transition:opacity .35s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(56,214,255,.16),transparent 45%)}
.glow-card:hover{border-color:var(--line-2)}
.glow-card:hover::before{opacity:1}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.feat{padding:32px 28px}
.feat .ico{width:54px;height:54px;display:grid;place-items:center;border-radius:14px;border:1px solid var(--line-2);background:linear-gradient(135deg,rgba(31,123,255,.18),rgba(56,214,255,.06));margin-bottom:26px}
.feat .ico svg{width:26px;height:26px;stroke:var(--cyan);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.feat h3{font-size:25px;letter-spacing:-.02em;margin-bottom:12px}
.feat p{color:var(--mute);font-size:18px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:20px}
.chips span{font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;padding:5px 9px;border-radius:6px;border:1px solid var(--line);color:var(--cyan);background:rgba(56,214,255,.05)}
.feat .num{position:absolute;top:24px;right:24px;font-family:var(--mono);font-size:13px;color:var(--dim)}

/* ---------- opportunity big type ---------- */
.big-quote{font-size:clamp(30px,4.4vw,64px);font-weight:500;letter-spacing:-.035em;line-height:1.08;max-width:1100px}
.big-quote .w{opacity:.14;transition:opacity .4s}
.big-quote .w.lit{opacity:1}

/* ---------- motor showcase ---------- */
.motor{overflow:hidden}
.motor-stage{position:relative;margin-top:20px;border-radius:28px;overflow:hidden;border:1px solid var(--line-2);background:#dfe8f5}
.motor-stage img{width:100%;aspect-ratio:16/9;object-fit:cover;transform:scale(1.12);transition:transform .2s linear;will-change:transform}
.motor-stage::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(20,44,100,.0) 40%,rgba(20,44,100,.75)),repeating-linear-gradient(0deg,rgba(0,0,0,.05) 0 1px,transparent 1px 3px)}
.scanline{position:absolute;left:0;right:0;height:120px;top:-120px;z-index:2;pointer-events:none;background:linear-gradient(transparent,rgba(56,214,255,.28),transparent);border-bottom:1px solid rgba(56,214,255,.8);animation:scan 4.5s var(--ease) infinite}
@keyframes scan{to{top:100%}}
.hud{position:absolute;inset:0;z-index:3;pointer-events:none}
.hud svg{width:100%;height:100%}
.callout{position:absolute;z-index:4;font-family:var(--mono);font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:#fff;padding:8px 12px;background:rgba(22,48,108,.82);border:1px solid var(--cyan);border-radius:8px;box-shadow:0 0 24px rgba(56,214,255,.35);opacity:0;transform:translateY(10px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.callout small{display:block;color:var(--cyan);font-size:12px;letter-spacing:.2em}
.in .callout{opacity:1;transform:none}
.callout.c1{left:58%;top:18%;transition-delay:.2s}
.callout.c2{left:62%;top:58%;transition-delay:.4s}
.callout.c3{left:14%;top:30%;transition-delay:.6s}
.callout.c4{left:20%;top:64%;transition-delay:.8s}
.hud-corner{position:absolute;width:26px;height:26px;border:2px solid var(--cyan);z-index:4}
.hud-corner.tl{top:16px;left:16px;border-right:0;border-bottom:0}
.hud-corner.tr{top:16px;right:16px;border-left:0;border-bottom:0}
.hud-corner.bl{bottom:16px;left:16px;border-right:0;border-top:0}
.hud-corner.br{bottom:16px;right:16px;border-left:0;border-top:0}
.hud-read{position:absolute;z-index:4;bottom:26px;right:30px;font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--cyan);text-align:right}
.hud-read b{display:block;color:#fff;font-size:31px;font-weight:500;letter-spacing:0}
.rec{position:absolute;z-index:4;top:26px;left:52px;padding:6px 10px;border-radius:6px;background:rgba(22,48,108,.78);font-family:var(--mono);font-size:13px;letter-spacing:.2em;color:#fff;display:flex;align-items:center;gap:8px}
.rec i{width:8px;height:8px;border-radius:50%;background:#ff3b5c;box-shadow:0 0 10px #ff3b5c;animation:blink 1s infinite}

/* ---------- energy flow ---------- */
.flow{padding:46px 40px;border-radius:28px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(40,70,140,.35),rgba(20,40,90,.35));margin-top:18px}
.flow-head{display:flex;justify-content:space-between;align-items:end;gap:20px;flex-wrap:wrap;margin-bottom:30px}
.flow svg{width:100%;height:auto}
.flow-node rect{fill:#22448f;stroke:var(--line-2)}
.flow-node text{fill:var(--ink);font-family:var(--sans);font-size:17px;font-weight:600}
.flow-node .s{fill:var(--mute);font-family:var(--mono);font-size:10.5px;font-weight:400;letter-spacing:.1em}
.flow-node.hot rect{stroke:var(--cyan);filter:url(#soft)}
.flow-path{fill:none;stroke:rgba(56,214,255,.18);stroke-width:2}
.flow-pulse{fill:none;stroke:url(#fg);stroke-width:3;stroke-linecap:round;stroke-dasharray:30 300;animation:fpulse 2.4s linear infinite}
.flow-pulse.d2{animation-delay:-.8s}.flow-pulse.d3{animation-delay:-1.6s}
@keyframes fpulse{from{stroke-dashoffset:330}to{stroke-dashoffset:0}}

/* ---------- product lines ---------- */
.line-card{display:flex;flex-direction:column;transform-style:preserve-3d}
.line-card .media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#dfe8f5}
.line-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.line-card:hover .media img{transform:scale(1.07)}
.line-card .media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(20,44,100,.9))}
.line-card .media .lbl{position:absolute;left:18px;bottom:14px;z-index:1;font-family:var(--mono);font-size:13px;letter-spacing:.2em;color:var(--cyan)}
.line-card .body{padding:26px 26px 30px}
.line-card h3{font-size:27px;margin-bottom:10px}
.line-card p{color:var(--mute);font-size:18px}

/* ---------- applications ---------- */
.apps{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.app{position:relative;min-height:440px;border-radius:24px;overflow:hidden;border:1px solid var(--line);display:flex;align-items:flex-end;isolation:isolate;background:#dfe8f5}
.app:nth-child(1){grid-column:span 7}.app:nth-child(2){grid-column:span 5}
.app:nth-child(3){grid-column:span 5}.app:nth-child(4){grid-column:span 7}
.app img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform 1s var(--ease),filter .6s}
.app::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(20,44,100,0) 25%,rgba(20,44,100,.55) 55%,rgba(20,44,100,.96));transition:opacity .5s}
.app:hover img{transform:scale(1.06)}
.app .inner{padding:30px;width:100%}
.app .no{position:absolute;top:22px;left:26px;font-family:var(--mono);font-size:14px;letter-spacing:.2em;color:#0b1224;background:rgba(255,255,255,.85);padding:5px 10px;border-radius:6px}
.app h3{font-size:clamp(28px,3vw,40px);letter-spacing:-.03em}
.app p{color:#c3cde0;margin-top:10px;max-width:440px}
.app .chips span{background:rgba(20,44,100,.6)}
.app .ring{position:absolute;top:22px;right:24px;width:58px;height:58px;border-radius:50%;border:1px dashed rgba(20,44,100,.4);animation:rot 10s linear infinite}
.app .ring::after{content:"";position:absolute;top:-4px;left:50%;width:8px;height:8px;margin-left:-4px;border-radius:50%;background:var(--blue);box-shadow:0 0 10px var(--blue)}

.values{margin-top:18px}
.value{padding:36px 30px;display:flex;flex-direction:column;gap:12px}
.value .big{font-size:clamp(28px,2.6vw,36px);font-weight:600;letter-spacing:-.03em}
.value p{color:var(--mute)}

/* ---------- business model ---------- */
.biz{padding:36px 30px 32px;min-height:320px;display:flex;flex-direction:column}
.biz .n{font-family:var(--mono);font-size:64px;font-weight:300;line-height:1;-webkit-text-stroke:1px var(--line-2);color:transparent;margin-bottom:auto}
.biz h3{font-size:31px;margin:40px 0 12px}
.biz p{color:var(--mute);font-size:18px}

/* ---------- roadmap ---------- */
.road{position:relative;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding-top:70px;margin-top:40px}
.road-line{position:absolute;top:20px;left:0;right:0;height:2px;background:rgba(255,255,255,.07)}
.road-line i{position:absolute;inset:0;transform-origin:left;transform:scaleX(0);background:var(--brand);box-shadow:0 0 16px rgba(56,214,255,.7);transition:transform 2.2s var(--ease)}
.in .road-line i{transform:scaleX(1)}
.milestone{position:relative;padding:30px 28px}
.milestone{overflow:visible}
.milestone::after{content:"";position:absolute;top:-58px;left:28px;width:16px;height:16px;border-radius:50%;background:var(--bg);border:2px solid var(--cyan);box-shadow:0 0 0 6px rgba(56,214,255,.1),0 0 18px var(--cyan)}
.milestone.now::after{background:var(--cyan);animation:ping 1.8s infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(56,214,255,.6),0 0 18px var(--cyan)}100%{box-shadow:0 0 0 18px rgba(56,214,255,0),0 0 18px var(--cyan)}}
.milestone .when{font-family:var(--mono);font-size:14px;letter-spacing:.18em;color:var(--gold);text-transform:uppercase}
.milestone h3{font-size:33px;margin:14px 0 14px}
.milestone li{position:relative;padding-left:18px;color:var(--mute);font-size:18px}
.milestone li+li{margin-top:8px}
.milestone li::before{content:"›";position:absolute;left:0;color:var(--cyan)}
.milestone .state{display:inline-block;margin-top:22px;font-family:var(--mono);font-size:12.5px;letter-spacing:.16em;padding:5px 10px;border-radius:6px;border:1px solid var(--line-2);color:var(--mute)}
.milestone.now .state{border-color:var(--mint);color:var(--mint)}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:72px;align-items:start}
.faq-grid .sticky{position:sticky;top:110px}
.faq details{border-bottom:1px solid var(--line)}
.faq details:first-child{border-top:1px solid var(--line)}
.faq summary{display:flex;align-items:center;gap:20px;padding:24px 0;cursor:pointer;list-style:none;font-size:clamp(20px,1.8vw,24px);font-weight:500;letter-spacing:-.01em;transition:color .2s}
.faq summary::-webkit-details-marker{display:none}
.faq summary .q{font-family:var(--mono);font-size:13px;color:var(--dim);flex:0 0 28px}
.faq summary .t{flex:1}
.faq summary .pm{position:relative;flex:0 0 30px;height:30px;border:1px solid var(--line-2);border-radius:8px;transition:transform .35s var(--ease),border-color .2s,background .2s}
.faq summary .pm::before,.faq summary .pm::after{content:"";position:absolute;left:50%;top:50%;width:11px;height:1.5px;margin:-.75px 0 0 -5.5px;background:var(--cyan)}
.faq summary .pm::after{transform:rotate(90deg);transition:transform .35s var(--ease)}
.faq details[open] summary .pm{background:rgba(56,214,255,.1);border-color:var(--cyan)}
.faq details[open] summary .pm::after{transform:rotate(0)}
.faq summary:hover{color:var(--cyan)}
.faq .a{padding:0 50px 26px 48px;color:var(--mute)}
.faq .a p+p{margin-top:10px}
.faq .a a{color:var(--cyan)}
.faq.collapsed details.more{display:none}
.faq-more{margin-top:28px}

/* ---------- contact ---------- */
.contact{padding:180px 0 160px;overflow:hidden;text-align:center}
.floor{position:absolute;left:-50%;right:-50%;bottom:-18%;height:62%;z-index:-1;perspective:420px;pointer-events:none}
.floor div{position:absolute;inset:0;transform:rotateX(68deg);transform-origin:bottom;
  background-image:linear-gradient(rgba(79,224,255,.8) 1px,transparent 1px),linear-gradient(90deg,rgba(79,224,255,.8) 1px,transparent 1px);
  background-size:70px 70px;animation:floor 1.6s linear infinite;
  mask-image:linear-gradient(transparent,#000 60%);-webkit-mask-image:linear-gradient(transparent,#000 60%)}
@keyframes floor{to{background-position:0 70px}}
.sun{position:absolute;left:50%;top:6%;width:min(560px,80vw);aspect-ratio:1;transform:translateX(-50%);z-index:-2;border-radius:50%;
  background:linear-gradient(180deg,#f0bd4f,#d98d22 40%,#1f7bff 75%,transparent);opacity:.55;filter:blur(2px);
  mask-image:repeating-linear-gradient(180deg,#000 0 22px,transparent 22px 28px);-webkit-mask-image:repeating-linear-gradient(180deg,#000 0 22px,transparent 22px 28px)}
.contact .h-xl{margin:26px 0}
.contact .lead{margin:0 auto}
.contact .ctas{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:40px}
.mailbox{display:inline-flex;align-items:center;gap:14px;margin-top:40px;padding:10px 10px 10px 20px;border:1px solid var(--line-2);border-radius:999px;background:rgba(24,52,115,.75);backdrop-filter:blur(8px);font-family:var(--mono);font-size:17px}
.mailbox .addr{color:var(--ink);user-select:all}
.mailbox button{padding:8px 14px;border-radius:999px;border:1px solid var(--line-2);background:transparent;color:var(--cyan);font:500 14px var(--mono);letter-spacing:.1em;cursor:pointer}
.mailbox button:hover{background:rgba(56,214,255,.1)}
.contact .note{margin-top:22px;color:var(--dim);font-size:16.5px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:70px 0 40px;background:rgba(20,44,100,.6)}
.foot{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot h4{font-family:var(--mono);font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--dim);font-weight:500;margin-bottom:18px}
.foot li+li{margin-top:10px}
.foot a{color:var(--mute);transition:color .2s}
.foot a:hover{color:var(--cyan)}
.foot .foot-addr{color:var(--mute);line-height:1.6;margin-top:14px}
.foot .about{color:var(--mute);max-width:320px;margin-top:16px}
.foot-giant{margin-top:70px;font-size:clamp(64px,17vw,260px);font-weight:700;letter-spacing:-.06em;line-height:.8;text-align:center;background:linear-gradient(180deg,rgba(255,255,255,.22),transparent 85%);-webkit-background-clip:text;background-clip:text;color:transparent;user-select:none}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;margin-top:30px;padding-top:24px;border-top:1px solid var(--line);font-family:var(--mono);font-size:13.5px;letter-spacing:.06em;color:var(--dim)}
.status{display:inline-flex;align-items:center;gap:8px}
.status i{width:7px;height:7px;border-radius:50%;background:var(--mint);box-shadow:0 0 8px var(--mint);animation:blink 2s infinite}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(40px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-links a{padding:8px 8px;font-size:13.5px}
  .stats,.grid-4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
  section{padding:100px 0}
  .hero-grid{grid-template-columns:minmax(0,1fr)}
  .wheel-stage{max-width:520px;margin-top:10px}
  .sec-head.split{grid-template-columns:1fr}
  .grid-3,.road{grid-template-columns:1fr}
  .road{padding-top:0;padding-left:44px}
  .road-line{top:0;bottom:0;left:12px;right:auto;width:2px;height:auto}
  .road-line i{transform-origin:top;transform:scaleY(0)}
  .in .road-line i{transform:scaleY(1)}
  .milestone::after{top:34px;left:-40px}
  .apps{grid-template-columns:1fr}
  .app{grid-column:auto!important;min-height:380px}
  .faq-grid{grid-template-columns:1fr;gap:40px}
  .faq-grid .sticky{position:static}
  .foot{grid-template-columns:1fr 1fr}
  .nav-toggle{display:block}
  .nav-links{position:fixed;top:80px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;padding:10px 24px 24px;background:rgba(20,44,100,.96);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);transform:translateY(-120%);transition:transform .45s var(--ease)}
  .nav-links.open{transform:none}
  .nav-links a{padding:15px 4px;font-size:15px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-cta .btn{display:none}
  .scroll-cue{display:none}
  .callout{font-size:12px;padding:6px 8px}
}
@media (max-width:640px){
  .wrap{width:calc(100% - 32px)}
  body{font-size:18px}
  section{padding:84px 0}
  .stats,.grid-4,.grid-2{grid-template-columns:1fr}
  .telemetry{min-width:118px;padding:8px 10px}
  .telemetry b{font-size:18px}
  .t1{left:0}.t2{right:0}.t3{left:0}
  .flow{padding:26px 18px}
  .callout.c3,.callout.c4{display:none}
  .callout.c1{left:auto;right:12px;top:14%}
  .callout.c2{left:auto;right:12px;top:auto;bottom:22%}
  .hud-read{display:none}
  .faq .a{padding:0 0 22px 48px}
  .foot{grid-template-columns:1fr}
  .mailbox{flex-wrap:wrap;justify-content:center;border-radius:18px;padding:14px}
  .lang{display:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none}
  .hero h1 .line>span{transform:none}
}
/* =========================================================
   LIGHT THEME — warm off-white background, dark text.
   Accents are deepened so they stay readable on light.
   ========================================================= */
:root{
  --bg:#f6f5f2;
  --bg-2:#eeede9;
  --panel:rgba(255,255,255,.78);
  --line:rgba(13,19,32,.10);
  --line-2:rgba(13,19,32,.20);
  --ink:#05080f;
  --mute:#1f2533;
  --dim:#424a5a;
  --cyan:#0a8fc4;
  --gold:#c27a12;
  --mint:#0a9a70;
  --brand:linear-gradient(90deg,#c9780f 0%,#e0a128 30%,#1aa3ec 64%,#0d6fd6 100%);
  --volt:linear-gradient(100deg,#1f6bff 0%,#14a9e0 55%,#0aa87a 100%);
  --shadow:0 12px 34px rgba(20,30,60,.08);
}
body{background:radial-gradient(1100px 760px at 8% -10%,rgba(255,190,90,.30),transparent 60%),radial-gradient(900px 700px at 95% 10%,rgba(79,200,255,.22),transparent 60%),radial-gradient(1000px 700px at 60% 110%,rgba(160,120,255,.12),transparent 60%),linear-gradient(180deg,#f8f7f4,#f1f0ec);background-attachment:fixed}
.bg-grid{opacity:.6}
.noise{opacity:.03}
.cursor-glow{background:radial-gradient(circle,rgba(31,140,255,.12),rgba(240,189,79,.06) 40%,transparent 70%)}
.boot-bar{background:rgba(0,0,0,.08)}
::selection{color:#fff}

nav.scrolled{background:rgba(248,247,244,.82)}
.brand .wm{background:var(--brand);-webkit-background-clip:text;background-clip:text;filter:none}
.brand small{color:var(--mute)}
.nav-links a:hover{background:rgba(10,143,196,.08)}

.btn-primary{color:#fff;box-shadow:0 0 0 1px rgba(31,107,255,.25),0 10px 30px -8px rgba(31,107,255,.55)}
.btn-primary:hover{box-shadow:0 0 0 1px rgba(31,107,255,.4),0 16px 40px -8px rgba(31,107,255,.7)}
.btn-ghost{background:rgba(255,255,255,.7)}
.btn-ghost:hover{background:#fff}

.badge{background:rgba(255,255,255,.75)}
.telemetry{background:rgba(255,255,255,.88);box-shadow:var(--shadow)}
.telemetry .bar{background:rgba(0,0,0,.08)}
.wheel-glow{background:radial-gradient(circle,rgba(79,200,255,.45),rgba(240,189,79,.18) 45%,transparent 70%)}

.marquee{background:linear-gradient(90deg,rgba(31,123,255,.06),rgba(240,189,79,.10))}
.marquee .track span.o{-webkit-text-stroke:1px rgba(13,19,32,.45)}
.marquee.alt .track span,.marquee.alt .track span::after{color:#fff}

.glow-card,.stat{box-shadow:var(--shadow)}
.glow-card::before{background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(20,160,230,.12),transparent 45%)}
.stat .gauge .tr{stroke:rgba(0,0,0,.08)}
.chips span{background:rgba(10,143,196,.06)}
.big-quote .w{opacity:.22}

.motor-stage::after{background:linear-gradient(180deg,rgba(13,19,32,0) 45%,rgba(13,19,32,.7)),repeating-linear-gradient(0deg,rgba(0,0,0,.04) 0 1px,transparent 1px 3px)}
.callout,.rec{background:rgba(13,19,32,.82)}
.callout small,.hud-read{color:#4fe0ff}
.hud-corner{border-color:#4fe0ff}

.flow{background:rgba(255,255,255,.6);box-shadow:var(--shadow)}
.flow-node rect{fill:#fff}
.flow-path{stroke:rgba(10,143,196,.25)}

.line-card .media::after{background:linear-gradient(180deg,transparent 60%,rgba(13,19,32,.55))}
.line-card .media .lbl{color:#fff}

.app::before{background:linear-gradient(180deg,rgba(13,19,32,0) 25%,rgba(13,19,32,.5) 55%,rgba(13,19,32,.92))}
.app h3{color:#fff}
.app p{color:#d9dfea}
.app .chips span{color:#7fe3ff;border-color:rgba(255,255,255,.25);background:rgba(13,19,32,.5)}
.app .ring{border-color:rgba(13,19,32,.35)}

.road-line{background:rgba(0,0,0,.08)}
.floor div{background-image:linear-gradient(rgba(10,143,196,.45) 1px,transparent 1px),linear-gradient(90deg,rgba(10,143,196,.45) 1px,transparent 1px)}
.sun{opacity:.28}
.mailbox{background:rgba(255,255,255,.85);box-shadow:var(--shadow)}

footer{background:rgba(255,255,255,.55)}
.foot-giant{background:linear-gradient(90deg,#a85f05,#c98a12 38%,#0f7fc4 66%,#0a4fb0);opacity:.9;-webkit-background-clip:text;background-clip:text}

@media (max-width:960px){
  .nav-links{background:rgba(248,247,244,.97)}
}

/* =========================================================
   CHINESE (zh-Hans) — CJK font, looser tracking and leading
   ========================================================= */
html[lang^="zh"]{--sans:"Space Grotesk","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;--mono:"JetBrains Mono","Noto Sans SC",ui-monospace,Consolas,monospace}
html[lang^="zh"] h1,html[lang^="zh"] h2,html[lang^="zh"] h3{letter-spacing:0;line-height:1.18}
html[lang^="zh"] .h-xl{font-size:clamp(44px,7vw,108px);line-height:1.12}
html[lang^="zh"] .hero h1 .line>span{white-space:nowrap}
html[lang^="zh"] .big-quote{letter-spacing:0;line-height:1.35}
html[lang^="zh"] .tag,html[lang^="zh"] .nav-links a,html[lang^="zh"] .badge,html[lang^="zh"] .chips span,html[lang^="zh"] .telemetry,html[lang^="zh"] .callout,html[lang^="zh"] .milestone .when,html[lang^="zh"] .foot h4{letter-spacing:.06em}
html[lang^="zh"] body{line-height:1.75}
html[lang^="zh"] .marquee .track span{letter-spacing:.04em}

/* ---------- team page ---------- */
.team-hero{padding-top:180px}
.leaders{display:grid;gap:18px;margin-top:70px}
.leader{display:grid;grid-template-columns:minmax(0,320px) 1fr;gap:48px;padding:26px;align-items:start}
.leader-photo{margin:0;border-radius:16px;overflow:hidden;background:#dfe8f5}
.leader-photo img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover;object-position:50% 22%}
.leader-bio{padding:10px 10px 6px 0}
.leader-bio h2{font-size:clamp(28px,3.2vw,40px);letter-spacing:-.03em;line-height:1.1}
.leader-bio .leader-role{margin-top:10px;font-family:var(--mono);font-size:14px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold)}
.leader-bio p{margin-top:16px;color:var(--mute);font-size:18px;line-height:1.65}
@media (max-width:900px){.leader{grid-template-columns:1fr;gap:24px}.leader-photo{max-width:320px}.leader-bio{padding:0}}
html[lang^="zh"] .leader-bio .leader-role{letter-spacing:.06em}