/* Velonix Home: live 3D showroom (index.html). Tokens match customize.html. */
:root {
  --neon: #bc13fe;
  --neon-2: #d04bff;
  --neon-glow: rgba(188, 19, 254, .45);
  --bg: #050506;
  --text: #f4f4f6;
  --dim: #9a9aa6;
  --glass: rgba(10, 10, 14, .52);
  --glass-strong: rgba(10, 10, 14, .72);
  --line: rgba(255, 255, 255, .1);
  --line-2: rgba(255, 255, 255, .18);
  --shade: 5, 5, 6;
  --head-h: 68px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --ease-io: cubic-bezier(.76, 0, .24, 1);
}
html[data-theme="light"] {
  --neon: #8a12c4;
  --neon-2: #a321e0;
  --neon-glow: rgba(138, 18, 196, .28);
  --bg: #eceaf2;
  --text: #17142a;
  --dim: #5c5970;
  --glass: rgba(255, 255, 255, .58);
  --glass-strong: rgba(255, 255, 255, .8);
  --line: rgba(40, 20, 80, .12);
  --line-2: rgba(40, 20, 80, .22);
  --shade: 236, 234, 242;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { background: var(--bg); color-scheme: dark; }
html[data-theme="light"] { color-scheme: light; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
body {
  font-family: 'Rajdhani', sans-serif; font-size: 18px; line-height: 1.5;
  color: var(--text); background: transparent; overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
html.booting body { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
h1, h2, .eyebrow, .num, .logo, .btn, .model-rail b { font-family: 'Orbitron', sans-serif; }
:focus-visible { outline: 2px solid var(--neon); outline-offset: 3px; }

/* ---------- 3D WORLD ---------- */
.world { position: fixed; inset: 0; z-index: 0; height: 100vh; height: 100lvh; background: #08080a; overflow: hidden; }
html[data-theme="light"] .world { background: #d9dade; }
.world iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; pointer-events: none; opacity: 0; transition: opacity 1s ease; }
html.studio-ready .world iframe { opacity: 1; }
.world-poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; filter: saturate(.9) brightness(.55); transition: opacity .8s ease; }
html.no3d .world-poster { opacity: 1; }
html.no3d .world iframe { display: none; }
html.no3d .drag-hint, html.no3d .model-rail { display: none; }
.world-shade {
  position: absolute; inset: 0; pointer-events: none; transition: background .9s ease, opacity .9s ease;
  background: linear-gradient(90deg, rgba(var(--shade), .82) 0%, rgba(var(--shade), .45) 32%, rgba(var(--shade), 0) 58%);
}
body[data-side="right"] .world-shade { background: linear-gradient(270deg, rgba(var(--shade), .82) 0%, rgba(var(--shade), .45) 32%, rgba(var(--shade), 0) 58%); }
.world-grain {
  position: absolute; inset: 0; pointer-events: none; opacity: .35; mix-blend-mode: overlay;
  background: repeating-linear-gradient(0deg, rgba(255,255,255,.035) 0 1px, transparent 1px 3px);
}
html[data-theme="light"] .world-grain { opacity: .15; }

/* ---------- BOOT ---------- */
.boot {
  position: fixed; inset: 0; z-index: 100; display: grid; place-items: center;
  background: radial-gradient(ellipse at 50% 55%, #1a0826 0%, #050506 62%);
  transition: clip-path .9s var(--ease-io), visibility 0s .9s; clip-path: inset(0 0 0 0);
}
html[data-theme="light"] .boot { background: radial-gradient(ellipse at 50% 55%, #f6ecff 0%, #e6e3ee 62%); }
html:not(.booting) .boot { clip-path: inset(0 0 100% 0); visibility: hidden; }
.boot-inner { width: min(420px, 80vw); }
.boot-logo { font: 800 clamp(2rem, 6vw, 3.4rem) 'Orbitron', sans-serif; letter-spacing: .3em; margin-right: -.3em; text-align: center; color: var(--neon); text-shadow: 0 0 28px var(--neon-glow); }
.boot-logo span { display: inline-block; opacity: 0; animation: bootChar .7s var(--ease) forwards; animation-delay: calc(var(--i) * 70ms); }
@keyframes bootChar { from { opacity: 0; transform: translateY(18px) scale(.9); filter: blur(8px); } to { opacity: 1; transform: none; filter: none; } }
.boot-bar { margin-top: 26px; height: 2px; background: var(--line); overflow: hidden; }
.boot-bar span { display: block; height: 100%; background: linear-gradient(90deg, transparent, var(--neon), #fff); transform-origin: left; transform: scaleX(0); transition: transform .35s var(--ease); box-shadow: 0 0 12px var(--neon); }
.boot-status { margin-top: 12px; display: flex; justify-content: space-between; font: 600 .7rem 'Orbitron', sans-serif; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); }
.boot-status b { color: var(--neon); font-weight: 600; }

.curtain { position: fixed; inset: 0; z-index: 99; pointer-events: none; background: linear-gradient(180deg, #0b0410, #050506); clip-path: inset(100% 0 0 0); }
.curtain::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--neon); box-shadow: 0 0 22px var(--neon); }
.curtain.cover { animation: curtainIn .5s var(--ease-io) forwards; }
@keyframes curtainIn { from { clip-path: inset(100% 0 0 0); } to { clip-path: inset(0 0 0 0); } }

/* ---------- HEADER ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50; height: var(--head-h);
  display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 0 clamp(16px, 3vw, 40px);
  background: linear-gradient(180deg, rgba(var(--shade), .75), rgba(var(--shade), 0));
  transition: background .4s ease, backdrop-filter .4s ease;
}
.site-header.scrolled { background: var(--glass-strong); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand .logo { font-weight: 900; font-size: 1.35rem; letter-spacing: .14em; color: var(--neon); text-shadow: 0 0 18px var(--neon-glow); }
.brand span:not(.logo) { font-size: .78rem; letter-spacing: .3em; text-transform: uppercase; color: var(--dim); }
.site-nav { display: flex; gap: 6px; }
.site-nav a { position: relative; padding: 8px 14px; font: 600 .72rem 'Orbitron', sans-serif; letter-spacing: .16em; text-transform: uppercase; color: var(--dim); transition: color .25s; }
.site-nav a::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px; background: var(--neon); box-shadow: 0 0 10px var(--neon); transform: scaleX(0); transition: transform .35s var(--ease); }
.site-nav a:hover, .site-nav a.on { color: var(--text); }
.site-nav a.on::after { transform: scaleX(1); }
.head-actions { display: flex; align-items: center; gap: 10px; }
.theme-toggle, .lab-btn {
  display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 16px; border-radius: 999px;
  border: 1px solid var(--line-2); background: var(--glass); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  font: 600 .74rem 'Orbitron', sans-serif; letter-spacing: .12em; text-transform: uppercase; transition: border-color .25s, box-shadow .25s, color .25s;
}
.lab-btn { border-radius: 8px; color: #fff; background: var(--neon); border-color: var(--neon); box-shadow: 0 0 22px var(--neon-glow); }
.theme-toggle:hover { border-color: var(--neon); color: var(--neon); }
.lab-btn:hover { box-shadow: 0 0 34px var(--neon); }
.progress { position: absolute; left: 0; bottom: -1px; height: 2px; width: 100%; background: var(--neon); box-shadow: 0 0 12px var(--neon); transform-origin: left; transform: scaleX(0); }

/* ---------- CHAPTER RAIL ---------- */
.rail { position: fixed; right: clamp(14px, 2vw, 28px); top: 50%; transform: translateY(-50%); z-index: 40; display: flex; flex-direction: column; gap: 14px; }
.rail a { position: relative; display: block; width: 10px; height: 10px; border-radius: 50%; border: 1px solid var(--line-2); background: transparent; transition: all .35s var(--ease); }
.rail a span { position: absolute; right: 22px; top: 50%; transform: translate(8px, -50%); white-space: nowrap; opacity: 0; font: 600 .62rem 'Orbitron', sans-serif; letter-spacing: .2em; text-transform: uppercase; color: var(--text); transition: all .3s var(--ease); pointer-events: none; }
.rail a:hover span, .rail a.on span { opacity: 1; transform: translate(0, -50%); }
.rail a.on { background: var(--neon); border-color: var(--neon); box-shadow: 0 0 14px var(--neon); height: 26px; border-radius: 6px; }

/* ---------- SHARED ---------- */
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: .72rem; font-weight: 600; letter-spacing: .32em; text-transform: uppercase; color: var(--neon); }
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--neon); box-shadow: 0 0 10px var(--neon); animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .3; } }
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 12px; height: 52px; padding: 0 26px; border-radius: 8px; overflow: hidden;
  font-size: .82rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: #fff;
  background: var(--neon); box-shadow: 0 0 28px var(--neon-glow), inset 0 0 0 1px rgba(255,255,255,.15); transition: transform .3s var(--ease), box-shadow .3s;
}
.btn::after { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.45) 50%, transparent 70%); transform: translateX(-120%); transition: transform .7s var(--ease); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 0 44px var(--neon); }
.btn:hover::after { transform: translateX(120%); }
.btn.ghost { color: var(--text); background: var(--glass); border: 1px solid var(--line-2); box-shadow: none; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.btn.ghost:hover { border-color: var(--neon); color: var(--neon); }
.btn.big { height: 64px; padding: 0 36px; font-size: .95rem; }
.btn i { transition: transform .3s var(--ease); }
.btn:hover i.fa-arrow-right { transform: translateX(4px); }

main { position: relative; z-index: 2; }
.chapter { position: relative; min-height: 120vh; display: flex; align-items: center; padding: 120px clamp(20px, 6vw, 96px); }
.chapter[data-side="right"] { justify-content: flex-end; }

/* ---------- HERO ---------- */
.hero { min-height: 100vh; min-height: 100svh; align-items: center; padding-top: calc(var(--head-h) + 20px); padding-bottom: 150px; cursor: grab; touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.hero.dragging { cursor: grabbing; }
.hero-copy { position: relative; max-width: 700px; cursor: auto; }
.hero-title { margin: 20px 0 22px; font-weight: 900; font-size: clamp(2.6rem, 5.8vw, 6rem); line-height: .92; letter-spacing: -.01em; text-transform: uppercase; }
.hero-title .line { display: block; }
.hero-title .outline { color: transparent; -webkit-text-stroke: 2px var(--neon); text-shadow: 0 0 40px var(--neon-glow); }
.hero-title .outline { --d: .1s; }
html.go .hero-title .split-text.outline .char { animation: charIn .8s var(--ease) calc(var(--d) + var(--ci) * 45ms) forwards, flicker 5s linear calc(2.4s + var(--ci) * 90ms) infinite; }
@keyframes flicker { 0%, 92%, 100% { opacity: 1; } 93% { opacity: .35; } 95% { opacity: 1; } 96% { opacity: .5; } }
.lead { max-width: 500px; font-size: 1.22rem; color: var(--dim); }
html[data-theme="light"] .lead { color: #3f3c52; }
.hero-actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 14px; }

.hud-frame { position: absolute; inset: calc(var(--head-h) + 14px) clamp(14px, 2vw, 28px) 18px; pointer-events: none; }
.hud-frame i { position: absolute; width: 26px; height: 26px; border: 0 solid var(--neon); opacity: .8; }
.hud-frame i:nth-child(1) { top: 0; left: 0; border-top-width: 2px; border-left-width: 2px; }
.hud-frame i:nth-child(2) { top: 0; right: 0; border-top-width: 2px; border-right-width: 2px; }
.hud-frame i:nth-child(3) { bottom: 0; left: 0; border-bottom-width: 2px; border-left-width: 2px; }
.hud-frame i:nth-child(4) { bottom: 0; right: 0; border-bottom-width: 2px; border-right-width: 2px; }

.spec-hud {
  position: absolute; right: clamp(56px, 7vw, 120px); top: calc(var(--head-h) + 46px); width: 270px; padding: 20px 22px; cursor: auto;
  background: var(--glass); border: 1px solid var(--line); border-radius: 12px; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.spec-hud::before { content: ""; position: absolute; left: -1px; top: 18px; bottom: 18px; width: 2px; background: var(--neon); box-shadow: 0 0 12px var(--neon); }
.spec-hud .name { margin: 6px 0 14px; font: 800 1.3rem 'Orbitron', sans-serif; min-height: 1.4em; }
.spec-hud dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding: 12px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.spec-hud dt, .perf dt { font-size: .66rem; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); }
.spec-hud dd, .perf dd { font-size: .85rem; color: var(--dim); }
.spec-hud dd b, .perf dd b { font: 700 1.15rem 'Orbitron', sans-serif; color: var(--text); }
.spec-hud .price { display: flex; justify-content: space-between; align-items: baseline; margin-top: 12px; }
.spec-hud .price small { font-size: .72rem; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); }
.spec-hud .price b { font: 800 1.3rem 'Orbitron', sans-serif; color: var(--neon); text-shadow: 0 0 16px var(--neon-glow); }

.drag-hint { position: absolute; right: clamp(56px, 7vw, 120px); bottom: 150px; display: flex; align-items: center; gap: 10px; font: 600 .66rem 'Orbitron', sans-serif; letter-spacing: .22em; text-transform: uppercase; color: var(--dim); pointer-events: none; }
.drag-hint i { color: var(--neon); animation: sway 2.4s ease-in-out infinite; }
@keyframes sway { 50% { transform: translateX(6px); } }

.model-rail { position: absolute; left: clamp(20px, 6vw, 96px); right: clamp(56px, 7vw, 120px); bottom: 40px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; cursor: auto; }
.model-rail button {
  position: relative; text-align: left; padding: 14px 16px 16px; border-radius: 10px; overflow: hidden;
  background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  display: grid; grid-template-columns: auto 1fr; column-gap: 12px; align-items: baseline; transition: border-color .3s, background .3s, transform .3s var(--ease);
}
.model-rail button:hover { border-color: var(--line-2); transform: translateY(-3px); }
.model-rail em { grid-row: span 2; font: 600 .7rem 'Orbitron', sans-serif; font-style: normal; color: var(--dim); }
.model-rail b { font-size: .92rem; letter-spacing: .06em; }
.model-rail small { font-size: .82rem; color: var(--dim); }
.model-rail .bar { position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: var(--neon); box-shadow: 0 0 10px var(--neon); transform-origin: left; transform: scaleX(0); }
.model-rail [aria-selected="true"] { border-color: var(--neon); background: linear-gradient(180deg, rgba(188,19,254,.16), var(--glass)); }
.model-rail [aria-selected="true"] em { color: var(--neon); }
.model-rail [aria-selected="true"] .bar { transform: scaleX(var(--p, 1)); }

/* ---------- TICKER ---------- */
.ticker { position: relative; z-index: 2; overflow: hidden; padding: 16px 0; border-block: 1px solid var(--line); background: var(--glass); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.ticker-track { display: flex; width: max-content; animation: marquee 32s linear infinite; }
.ticker span { padding: 0 34px; font: 800 1rem 'Orbitron', sans-serif; letter-spacing: .2em; text-transform: uppercase; color: transparent; -webkit-text-stroke: 1px var(--line-2); white-space: nowrap; }
.ticker span:nth-child(3n+1) { color: var(--neon); -webkit-text-stroke: 0; text-shadow: 0 0 14px var(--neon-glow); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- CHAPTER PANELS ---------- */
.panel {
  position: relative; width: min(480px, 100%); padding: 34px 32px 30px; border-radius: 14px;
  background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(16px) saturate(1.2); -webkit-backdrop-filter: blur(16px) saturate(1.2);
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
}
html[data-theme="light"] .panel { box-shadow: 0 30px 80px rgba(60,30,110,.14); }
.panel::before, .panel::after { content: ""; position: absolute; width: 22px; height: 22px; border: 0 solid var(--neon); }
.panel::before { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; border-top-left-radius: 14px; }
.panel::after { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; border-bottom-right-radius: 14px; }
.panel .num { position: absolute; top: -52px; right: 18px; font-weight: 900; font-size: 5.6rem; line-height: 1; color: transparent; -webkit-text-stroke: 1px var(--neon); opacity: .55; pointer-events: none; }
.panel h2 { margin: 12px 0 14px; font-weight: 800; font-size: clamp(1.9rem, 3.4vw, 2.8rem); line-height: 1.05; text-transform: uppercase; }
.panel p { color: var(--dim); font-size: 1.08rem; }
html[data-theme="light"] .panel p { color: #3f3c52; }

/* about */
.checklist { list-style: none; display: grid; gap: 14px; margin-top: 22px; }
.checklist li { display: grid; grid-template-columns: 40px 1fr; gap: 12px; align-items: start; }
.checklist i { display: grid; place-items: center; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line-2); color: var(--neon); background: rgba(188,19,254,.08); }
.checklist b { display: block; font-size: 1.05rem; }
.checklist span { display: block; color: var(--dim); font-size: .95rem; line-height: 1.35; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--line); }
.stats dt { font: 600 .58rem 'Orbitron', sans-serif; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); }
.stats dd { font: 800 1.6rem 'Orbitron', sans-serif; color: var(--neon); text-shadow: 0 0 14px var(--neon-glow); }

/* ---------- ENGINE ROOM ---------- */
.engine { --amber: #ffb020; --red: #ff3b5c; --ok: #2bff88; padding-top: 28px; padding-bottom: 24px; transition: box-shadow .3s, border-color .3s; }
html[data-theme="light"] .engine { --amber: #d98200; --red: #d81b45; --ok: #0f9d58; }
.engine h2 { font-size: clamp(1.9rem, 3vw, 2.6rem); }
.engine .how { font-size: 1rem; }
.engine.running { box-shadow: 0 30px 80px rgba(0,0,0,.35), 0 0 calc(var(--throb, 0) * 70px) var(--neon-glow); }
.engine.maxed { border-color: var(--red); }
.engine.maxed.running { box-shadow: 0 30px 80px rgba(0,0,0,.35), 0 0 calc(18px + var(--throb, 0) * 90px) rgba(255,59,92,.45); }
.en-top { display: flex; align-items: center; gap: 14px; margin-top: 16px; }
.en-car { flex: 1; min-width: 0; line-height: 1.25; }
.en-car b { display: block; font-size: 1.05rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.en-car small { display: block; color: var(--dim); font-size: .88rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.vol { display: flex; align-items: center; gap: 8px; flex: none; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--neon); cursor: pointer; }
.vol em { width: 2.6em; font: 800 .66rem 'Orbitron', sans-serif; font-style: normal; text-align: right; color: var(--text); }
.engine.maxed .vol { border-color: var(--red); color: var(--red); }
.engine.maxed .vol em { color: var(--red); text-shadow: 0 0 10px var(--red); animation: shiftBlink .5s steps(1) infinite; }
.vol input { -webkit-appearance: none; appearance: none; width: 96px; height: 6px; border-radius: 3px; background: linear-gradient(90deg, var(--neon) var(--v, 70%), var(--line-2) var(--v, 70%)); cursor: pointer; }
.engine.maxed .vol input { background: linear-gradient(90deg, var(--neon), var(--red)); }
.vol input::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 3px var(--neon), 0 0 12px var(--neon); }
.vol input::-moz-range-thumb { width: 14px; height: 14px; border: 0; border-radius: 50%; background: #fff; box-shadow: 0 0 0 3px var(--neon), 0 0 12px var(--neon); }

.gauge { position: relative; margin: 12px auto 0; max-width: 280px; }
.gauge svg { display: block; width: 100%; height: auto; overflow: visible; }
.gauge path { fill: none; stroke-linecap: round; }
.gauge .track { stroke: var(--line-2); stroke-width: 8; }
.gauge .redline { stroke: var(--red); stroke-width: 8; opacity: .8; }
.gauge .ticks line { stroke: var(--dim); stroke-width: 1.5; }
.gauge .ticks text { fill: var(--dim); font: 700 8px 'Orbitron', sans-serif; text-anchor: middle; }
.gauge .needle { stroke: var(--neon); stroke-width: 3; stroke-linecap: round; filter: drop-shadow(0 0 4px var(--neon)); }
.gauge .hub { fill: var(--neon); }
.limit-light { position: absolute; left: 50%; top: 56%; transform: translateX(-50%); padding: 3px 10px; border-radius: 6px; font: 800 .58rem 'Orbitron', sans-serif; letter-spacing: .22em; text-transform: uppercase; color: var(--dim); border: 1px solid var(--line-2); opacity: .5; }
.limit-light.on { opacity: 1; color: #fff; background: var(--red); border-color: var(--red); box-shadow: 0 0 22px var(--red); }
@keyframes shiftBlink { 50% { opacity: .35; } }
.pops { position: absolute; inset: -10% -6%; pointer-events: none; }
.pops span { position: absolute; font: 900 1.1rem 'Orbitron', sans-serif; color: var(--amber); text-shadow: 0 0 12px var(--amber), 0 0 2px #fff; transform: translate(-50%, -50%) rotate(var(--r)) scale(var(--s)); animation: popOut .65s var(--ease) forwards; }
@keyframes popOut { 0% { opacity: 0; transform: translate(-50%, -50%) rotate(var(--r)) scale(calc(var(--s) * .4)); } 15% { opacity: 1; transform: translate(-50%, -50%) rotate(var(--r)) scale(calc(var(--s) * 1.15)); } 100% { opacity: 0; transform: translate(-50%, -90%) rotate(var(--r)) scale(var(--s)); } }
.readouts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 6px; text-align: center; }
.readouts b { display: block; font: 800 1.5rem 'Orbitron', sans-serif; font-variant-numeric: tabular-nums; }
.readouts small { font: 600 .56rem 'Orbitron', sans-serif; letter-spacing: .2em; text-transform: uppercase; color: var(--dim); }
.meter { display: flex; gap: 3px; height: 10px; margin-top: 10px; }
.meter i { flex: 1; border-radius: 2px; background: var(--line); transition: background .06s, box-shadow .06s; }
.meter i.on { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.meter i.a.on { background: var(--amber); box-shadow: 0 0 8px var(--amber); }
.meter i.r.on { background: var(--red); box-shadow: 0 0 10px var(--red); }

.rev-btn { width: 100%; justify-content: center; margin-top: 16px; user-select: none; -webkit-user-select: none; touch-action: none; -webkit-touch-callout: none; }
.rev-btn.held { transform: scale(.98); box-shadow: 0 0 54px var(--neon); }
.engine.maxed .rev-btn.held { background: var(--red); box-shadow: 0 0 60px var(--red); }
.en-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; }
.en-actions button { position: relative; display: flex; align-items: center; justify-content: center; gap: 8px; height: 44px; border-radius: 8px; border: 1px solid var(--line-2); background: rgba(255,255,255,.03); font-weight: 600; user-select: none; -webkit-user-select: none; touch-action: none; transition: border-color .2s, background .2s, box-shadow .2s, transform .15s; }
.en-actions button i { color: var(--neon); }
.en-actions button:hover { border-color: var(--neon); }
.en-actions button:active, .en-actions button.on { transform: scale(.96); border-color: var(--neon); background: rgba(188,19,254,.18); box-shadow: 0 0 18px var(--neon-glow); }
.en-actions [data-en-act="burnout"].on i { color: var(--amber); animation: shiftBlink .2s steps(1) infinite; }
.en-actions kbd { position: absolute; top: 4px; right: 6px; font: 700 .5rem 'Orbitron', sans-serif; color: var(--dim); opacity: .7; }
.en-models { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 12px; }
.en-models button { padding: 6px 11px; border-radius: 7px; border: 1px solid var(--line-2); font-weight: 600; font-size: .88rem; color: var(--dim); transition: border-color .25s, color .25s, background .25s; }
.en-models button:hover { border-color: var(--neon); color: var(--text); }
.en-models button.on { color: #fff; background: var(--neon); border-color: var(--neon); }

/* short laptop screens: the button labels carry the instructions */
@media (max-height: 820px) and (min-width: 761px) {
  .engine .how { display: none; }
  .gauge { max-width: 250px; }
}

/* ---------- THE LAB ---------- */
.panel.wide { width: min(700px, 100%); }
.lab-grid { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 22px 0 26px; }
.lab-grid li { padding: 14px; border-radius: 10px; border: 1px solid var(--line); background: rgba(255,255,255,.03); transition: border-color .3s, transform .3s var(--ease); }
.lab-grid li:hover { border-color: var(--neon); transform: translateY(-3px); }
.lab-grid i { color: var(--neon); font-size: 1.1rem; }
.lab-grid b { display: block; margin-top: 8px; font-size: 1rem; }
.lab-grid span { display: block; color: var(--dim); font-size: .88rem; line-height: 1.35; }

/* panel entrance */
.js .chapter .panel > * { opacity: 0; transform: translateY(26px); filter: blur(6px); transition: opacity .7s var(--ease), transform .7s var(--ease), filter .7s var(--ease); }
.js .chapter .panel { opacity: 0; transform: translateX(-30px) scale(.98); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.js .chapter[data-side="right"] .panel { transform: translateX(30px) scale(.98); }
.js .chapter.in .panel, .js .chapter.in .panel > * { opacity: 1; transform: none; filter: none; }
.js .chapter.in .panel > .num { opacity: .55; }
.chapter.in .panel > :nth-child(2) { transition-delay: .08s; } .chapter.in .panel > :nth-child(3) { transition-delay: .14s; }
.chapter.in .panel > :nth-child(4) { transition-delay: .2s; } .chapter.in .panel > :nth-child(n+5) { transition-delay: .26s; }

/* ---------- FOOTER ---------- */
.site-footer { position: relative; z-index: 2; padding: 48px clamp(20px, 6vw, 96px) 28px; background: var(--glass-strong); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-top: 1px solid var(--line); }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 30px; }
.footer-grid p { margin-top: 10px; max-width: 380px; color: var(--dim); }
.maker { display: grid; gap: 4px; justify-items: start; }
.maker .eyebrow { color: var(--neon); font-size: .7rem; letter-spacing: .24em; text-transform: uppercase; }
.maker b { font: 800 1.35rem 'Orbitron', sans-serif; letter-spacing: .04em; margin-top: 4px; }
.maker span { color: var(--dim); }
.maker .contact-link { display: inline-flex; align-items: center; gap: 10px; margin-top: 10px; padding: 9px 16px; border: 1px solid var(--line-2); border-radius: 999px; font-weight: 600; transition: border-color .25s, color .25s, box-shadow .25s; }
.maker .contact-link i { color: var(--neon); font-size: 1.1rem; }
.maker .contact-link:hover { border-color: var(--neon); box-shadow: 0 0 18px var(--neon-glow); }
.footer-bottom { margin-top: 34px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: var(--dim); font-size: .95rem; }
.text-link { color: var(--neon); font-weight: 600; }

/* ---------- INTRO (after boot) ---------- */
.split-text .char { display: inline-block; opacity: 0; transform: translateY(.5em) rotateX(-70deg); filter: blur(8px); }
.split-text .word { display: inline-block; white-space: nowrap; }
.split-text .space { display: inline-block; width: .28em; }
html.go .hero .split-text .char { animation: charIn .8s var(--ease) forwards; animation-delay: calc(var(--d, 0s) + var(--ci) * 45ms); }
@keyframes charIn { to { opacity: 1; transform: none; filter: none; } }
.js .intro { opacity: 0; transform: translateY(20px); }
html.go .intro { animation: introIn .9s var(--ease) forwards; animation-delay: var(--d, .2s); }
@keyframes introIn { to { opacity: 1; transform: none; } }
.glitch { animation: glitch .4s steps(1); }
@keyframes glitch { 0% { text-shadow: 3px 0 #ff2bd6, -3px 0 #5b00ff; } 33% { text-shadow: -3px 0 #fff, 3px 0 var(--neon); } 66% { text-shadow: 2px 0 #5b00ff, -2px 0 #ff2bd6; } }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1100px) {
  .site-nav { display: none; }
  .spec-hud { top: auto; bottom: 150px; right: clamp(20px, 6vw, 96px); width: 240px; }
  .drag-hint { display: none; }
}
@media (max-width: 760px) {
  :root { --head-h: 60px; }
  body { font-size: 17px; }
  .brand span:not(.logo) { display: none; }
  .theme-toggle .theme-label, .lab-btn .label { display: none; }
  .theme-toggle, .lab-btn { padding: 0 13px; }
  .rail { display: none; }
  .world-shade, body[data-side="right"] .world-shade {
    background: linear-gradient(0deg, rgba(var(--shade), .92) 0%, rgba(var(--shade), .55) 42%, rgba(var(--shade), 0) 70%);
  }
  body[data-chapter="hero"] .world-shade { background: linear-gradient(180deg, rgba(var(--shade), .85) 0%, rgba(var(--shade), .2) 45%, rgba(var(--shade), 0) 60%, rgba(var(--shade), .7) 100%); }
  .chapter { min-height: 115svh; align-items: flex-end; padding: 90px 16px 48px; }
  .chapter[data-side="right"] { justify-content: flex-start; }
  .hero { align-items: flex-start; padding: calc(var(--head-h) + 22px) 16px 0; min-height: 100svh; }
  .hero-title { font-size: clamp(2.5rem, 13vw, 3.6rem); margin: 14px 0 14px; }
  .hero-title .outline { -webkit-text-stroke-width: 1.5px; }
  .lead { font-size: 1.05rem; }
  .hero-actions { margin-top: 22px; }
  .btn { height: 48px; padding: 0 20px; font-size: .74rem; }
  .spec-hud { display: none; }
  .hud-frame { display: none; }
  .model-rail { left: 0; right: 0; bottom: 22px; display: flex; overflow-x: auto; padding: 0 16px 4px; scroll-snap-type: x mandatory; scrollbar-width: none; }
  .model-rail::-webkit-scrollbar { display: none; }
  .model-rail button { flex: 0 0 auto; min-width: 138px; scroll-snap-align: start; }
  .panel { padding: 24px 20px 20px; }
  .panel h2 { font-size: 1.6rem; margin: 8px 0 10px; }
  .panel h2 br { display: none; }
  .panel p { font-size: .98rem; }
  .stats dd { font-size: 1.25rem; }
  .lab-grid { grid-template-columns: 1fr 1fr; }
  .lab-grid li { padding: 11px; }
  .engine .how { display: none; }
  .en-top { margin-top: 10px; gap: 10px; }
  .en-car small { font-size: .8rem; }
  .vol { padding: 5px 8px; gap: 6px; }
  .vol input { width: 64px; }
  .gauge { max-width: 210px; margin-top: 6px; }
  .readouts b { font-size: 1.2rem; }
  .rev-btn { margin-top: 12px; }
  .en-actions kbd { display: none; }
  .en-models { gap: 4px; }
  .en-models button { padding: 5px 7px; font-size: .8rem; }
  .panel .num { font-size: 4rem; top: -38px; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .split-text .char, .js .intro { opacity: 1; transform: none; filter: none; }
}