:root{
  --bg:#0b0e12; --bg2:#10151b; --card:#151b23; --line:#232c38;
  --text:#e6edf3; --mut:#8b98a8; --acc:#2de2c8; --acc2:#b6ff3c; --warn:#ffb020;
  --r:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:70px}
body{background:var(--bg);color:var(--text);font:16px/1.65 "Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
b{font-weight:650}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* nav */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;justify-content:space-between;align-items:center;padding:14px 28px;background:rgba(11,14,18,.8);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.logo{font-weight:300;letter-spacing:.14em;font-size:15px}
.logo b{font-weight:800;color:var(--acc)}
.bolt{color:var(--acc2);margin-right:4px}
.nav nav{display:flex;gap:22px}
.nav nav a{font-size:14px;color:var(--mut);transition:color .2s}
.nav nav a:hover{color:var(--acc)}

/* hero */
.hero{position:relative;padding:150px 0 90px;overflow:hidden;background:radial-gradient(900px 500px at 80% 0%,rgba(45,226,200,.16),transparent 60%),radial-gradient(700px 400px at 0% 100%,rgba(182,255,60,.08),transparent 60%)}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:56px 56px;opacity:.35;mask-image:linear-gradient(#000,transparent 85%)}
.hero-inner{position:relative}
.eyebrow{color:var(--acc);font-size:13px;letter-spacing:.2em;text-transform:uppercase;margin-bottom:14px;font-weight:600}
h1{font-size:clamp(38px,6.4vw,74px);line-height:1.04;font-weight:800;letter-spacing:-.02em}
h2{font-size:clamp(28px,4vw,42px);line-height:1.15;font-weight:750;letter-spacing:-.01em;margin-bottom:22px}
h3{font-size:18px;margin-bottom:10px}
.lead{max-width:680px;color:#b8c4d2;font-size:19px;margin:26px 0 32px}
.sub{color:var(--mut);max-width:680px;margin:-8px 0 28px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 24px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--text);font:inherit;font-size:15px;font-weight:600;cursor:pointer;transition:.2s}
.btn:hover{border-color:var(--acc);color:var(--acc)}
.btn.primary{background:var(--acc);border-color:var(--acc);color:#04201b}
.btn.primary:hover{background:var(--acc2);border-color:var(--acc2);color:#111}
.stats{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:18px;margin-top:64px}
.stats li{border-top:2px solid var(--acc);padding-top:12px}
.stats b{display:block;font-size:38px;font-weight:800;font-variant-numeric:tabular-nums}
.stats span{color:var(--mut);font-size:14px}

/* sections */
.section{padding:96px 0}
.section.alt{background:var(--bg2);border-block:1px solid var(--line)}
.two{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;align-items:start}
.two p{color:#b8c4d2;margin-bottom:14px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px;transition:transform .25s,border-color .25s}
.grid3 .card:hover{transform:translateY(-4px);border-color:var(--acc)}
.card p{color:#b8c4d2;font-size:15px}
.note{color:var(--mut)!important;font-size:13px!important;margin-top:12px}

.spec dl{display:grid;grid-template-columns:auto 1fr;gap:10px 18px;font-size:15px}
.spec dt{color:var(--mut)}
.badge{background:rgba(255,176,32,.15);color:var(--warn);padding:2px 12px;border-radius:99px;font-size:13px;font-weight:600}

/* flow */
.flow{display:flex;align-items:stretch;gap:10px;margin:28px 0 36px;overflow-x:auto;padding-bottom:6px}
.node{flex:1 0 140px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center;font-weight:600;font-size:14px}
.node small{color:var(--mut);font-weight:400}
.node.hv{border-color:rgba(45,226,200,.5);box-shadow:0 0 24px rgba(45,226,200,.08)}
.arrow{align-self:center;color:var(--acc);font-size:22px}

/* battery bars */
.bar-row{display:grid;grid-template-columns:1fr auto;gap:6px 10px;margin:18px 0;font-size:14px}
.bar-row .bar{grid-column:1/-1;height:10px;background:var(--line);border-radius:99px;overflow:hidden}
.bar-row i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--acc2));border-radius:99px;transition:width 1.2s ease}
.bar-row.in i{width:var(--w)}
.bar-row em{color:var(--mut);font-style:normal;font-size:12px;grid-row:1;grid-column:2}

/* demo */
.demo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px}
.seq{list-style:none;margin:8px 0 20px}
.seq li{display:grid;gap:0 12px;padding:12px 14px 12px 46px;position:relative;border-radius:10px;opacity:.4;transition:.3s}
.seq li::before{content:"";position:absolute;left:14px;top:16px;width:18px;height:18px;border-radius:50%;border:2px solid var(--mut)}
.seq li b{font-size:15px}
.seq li span{font-size:13px;color:var(--mut)}
.seq li.on{opacity:1}
.seq li.on::before{background:var(--acc);border-color:var(--acc);box-shadow:0 0 14px var(--acc)}
.seq li.cur{background:rgba(45,226,200,.08)}
.row{display:flex;gap:12px;flex-wrap:wrap}
.row.between{justify-content:space-between;margin-top:14px;font-size:14px}
.gauge svg{width:100%;max-width:300px;display:block;margin:6px auto}
.g-bg,.g-fg{fill:none;stroke-width:14;stroke-linecap:round}
.g-bg{stroke:var(--line)}
.g-fg{stroke:var(--acc);stroke-dasharray:100;stroke-dashoffset:100;transition:stroke-dashoffset .15s}
#gTxt{fill:var(--text);font-size:30px;font-weight:800}
.slider{display:block;font-size:14px;color:var(--mut);margin-top:6px}
.slider input{width:100%;margin-top:8px;accent-color:var(--acc)}
.slider input:disabled{opacity:.35}

/* dash mock */
.dash{background:#070a0e;border-color:#2a3644}
.dash-top{display:flex;justify-content:space-between;color:var(--mut);font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:18px}
.ok{color:var(--acc2)}
.dash-main{display:flex;align-items:center;gap:22px}
.speedo{width:150px;height:150px;border-radius:50%;border:6px solid var(--acc);box-shadow:0 0 28px rgba(45,226,200,.3);display:grid;place-content:center;text-align:center}
.speedo b{font-size:54px;line-height:1}
.speedo small,.dash-side small{color:var(--mut);font-size:12px}
.dash-side{display:grid;gap:12px}
.dash-side b{display:block;font-size:22px}

/* timeline */
.tl{position:relative;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-top:10px}
.tl-item{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px 22px 22px 22px}
.tl-item i{display:block;width:12px;height:12px;border-radius:50%;background:var(--line);margin-bottom:14px}
.tl-item p{color:var(--mut);font-size:14px}
.tl-item.done i{background:var(--acc2)}
.tl-item.now{border-color:var(--acc)}
.tl-item.now i{background:var(--acc);box-shadow:0 0 12px var(--acc);animation:pulse 1.6s infinite}
.tl-item.dream{border-style:dashed}
@keyframes pulse{50%{opacity:.4}}

footer{border-top:1px solid var(--line);padding:30px 0;color:var(--mut);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s,transform .7s}
.reveal.in{opacity:1;transform:none}

@media(max-width:820px){
  .two{grid-template-columns:1fr}
  .nav nav{display:none}
  .section{padding:68px 0}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}