/* The home page only: reveal on scroll, the hero lap, and each section in the order it appears. */

/* ---------- reveal on scroll */
html.js [data-reveal] { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease-out), transform 1s var(--ease-out); transition-delay: var(--d, 0ms) }
html.js [data-reveal].in { opacity: 1; transform: none }
/* the mask each word slides out of: room above for Thai vowels and tone marks, below for tails like g, y, p */
.split .w { display: inline-block; overflow: hidden; vertical-align: top; padding-block: .32em .16em; margin-block: -.32em -.16em }
.split .w > span { display: inline-block; transform: translateY(108%); transition: transform 1s var(--ease-out); transition-delay: calc(var(--i) * 55ms + var(--d, 0ms)) }
.split.in .w > span, html:not(.js) .split .w > span { transform: none }

/* ---------- hero: one real lap of Monza, drawn live */
.hero { position: relative; min-height: 100svh; display: grid; align-items: center; padding-block: 110px 70px; overflow: hidden }
.hero__lap { position: absolute; inset: 0; z-index: 0 }
.hero__lap canvas { width: 100%; height: 100%; display: block }
.hero::after { content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: linear-gradient(90deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 82%, transparent) 38%, transparent 70%),
              linear-gradient(0deg, var(--bg) 0%, transparent 22%) }
.hero__in { position: relative; z-index: 1; width: 100% }
.hero__text { max-width: 620px }
.lede { font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); margin: 24px 0 32px; max-width: 32em; text-wrap: pretty }
.lede strong { color: var(--ink); font-weight: 600 }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center }
.hero__note { color: var(--faint); font-size: 13px; margin-top: 14px }
.stats { display: flex; flex-wrap: wrap; gap: 34px; margin-top: 52px }
.stats div { display: grid; gap: 2px }
.stats b { font: 700 40px/1 var(--display) }
.stats span { color: var(--muted); font-size: 13.5px }

/* the dash beside the lap: what the car is doing at this instant */
.hud { position: absolute; z-index: 1; right: max(24px, calc((100vw - var(--wrap)) / 2 + 24px)); bottom: 70px; width: 270px;
  background: color-mix(in srgb, var(--panel) 72%, transparent); border: 1px solid var(--line-2); border-radius: 18px; padding: 16px 18px;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 20px 60px rgba(0, 0, 0, .25) }
.hud__top { display: flex; justify-content: space-between; align-items: baseline; color: var(--muted); font-size: 12px; letter-spacing: .06em; text-transform: uppercase }
.hud__speed { display: flex; align-items: baseline; gap: 10px; margin: 6px 0 10px }
.hud__speed b { font: 700 58px/1 var(--display); font-variant-numeric: tabular-nums; min-width: 2.6ch }
.hud__speed span { color: var(--muted); font-size: 13px }
.hud__speed .hud__gear { margin-left: auto; font: 700 44px/1 var(--display); color: var(--accent) }
.hud__bar { height: 6px; border-radius: 6px; background: var(--line); overflow: hidden; margin-top: 7px }
.hud__bar i { display: block; height: 100%; width: 0; border-radius: 6px; transition: width .1s linear }
.hud__bar--thr i { background: var(--throttle) } .hud__bar--brk i { background: var(--brake) }
.hud__corner { margin-top: 12px; min-height: 1.5em; font: 600 14px var(--body); color: var(--accent); transition: opacity .3s }
@media (max-width: 900px) {
  .hero { min-height: auto; padding-top: 96px; align-items: start }
  .hero__lap { position: relative; inset: auto; height: 300px; margin: -10px -16px 0; order: -1 }
  .hero::after { background: linear-gradient(0deg, var(--bg) 0%, transparent 30%) }
  .hud { position: relative; right: auto; bottom: auto; width: auto; margin-top: 28px }
  .stats { gap: 22px } .stats b { font-size: 32px }
}

/* ---------- marquee: every ACC circuit */
.marquee { position: relative; overflow: hidden; padding-block: 26px; border-block: 1px solid var(--line);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent) }
.marquee__label { text-align: center; color: var(--muted); font: 600 13px var(--body); letter-spacing: .1em; text-transform: uppercase; margin: 0 0 14px }
.marquee__row { display: flex; gap: 48px; width: max-content; animation: marquee 60s linear infinite }
.marquee:hover .marquee__row { animation-play-state: paused }
.marquee__row span { display: inline-flex; align-items: center; gap: 48px; font: 700 clamp(20px, 2.4vw, 30px)/1 var(--display); text-transform: uppercase; letter-spacing: .03em; color: var(--muted); white-space: nowrap }
.marquee__row span::after { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent) }
@keyframes marquee { to { transform: translateX(-50%) } }

/* ---------- brake boards: a scroll-driven scene */
.boards { height: 260vh; position: relative }
.boards__stick { position: sticky; top: 0; height: 100svh; display: grid; align-content: center; overflow: hidden }
.boards__grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 48px; align-items: center }
@media (max-width: 900px) { .boards { height: 230vh } .boards__grid { grid-template-columns: minmax(0, 1fr); gap: 22px } }
.steps-live { list-style: none; margin: 26px 0 0; padding: 0; display: grid; gap: 12px }
.steps-live li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 12px; align-items: start; padding: 14px 16px; border-radius: 14px;
  border: 1px solid var(--line); background: var(--panel); opacity: .38; transform: translateX(-6px);
  transition: opacity .5s var(--ease-out), transform .6s var(--spring), border-color .4s }
.steps-live li.on { opacity: 1; transform: none; border-color: color-mix(in srgb, var(--accent) 55%, var(--line)) }
.steps-live li i { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; font: 700 18px var(--display); font-style: normal; background: var(--accent-soft); color: var(--accent) }
.steps-live p { margin: 0; color: var(--muted); font-size: 15px }
.steps-live b { color: var(--ink); font-weight: 600 }
.scene { position: relative; border-radius: 22px; border: 1px solid var(--line); background: var(--panel); overflow: hidden }
.scene svg { display: block; width: 100%; height: auto }
.scene .sky { fill: var(--bg-2) }
.scene .road { fill: var(--raise) }
.scene .lane { stroke: var(--line-2); stroke-width: 3; stroke-dasharray: 22 18 }
.scene .kerb { fill: var(--line-2) }
.scene .post { fill: var(--faint) }
.scene .plate { fill: var(--board); transition: fill .4s }
.scene .plate-ink { fill: var(--board-ink); font: 700 30px var(--display) }
.scene .ring { fill: none; stroke: var(--accent); stroke-width: 4; opacity: 0; transition: opacity .5s; filter: drop-shadow(0 0 10px var(--accent)) }
.scene .ring.on { opacity: 1 }
.scene .ghost { fill: none; stroke: var(--brake); stroke-width: 3; stroke-dasharray: 6 6; opacity: 0; transition: opacity .5s }
.scene .ghost.on { opacity: .9 }
.scene .tag { font: 600 17px var(--body); opacity: 0; transition: opacity .5s }
.scene .tag.on { opacity: 1 }
.scene .tag--brake { fill: var(--brake) } .scene .tag--accent { fill: var(--accent) }
/* the car */
.scene .car-paint { fill: url(#paint) }
.scene .car-dark { fill: #0A0D0E; stroke: #0A0D0E }
.scene .car-wing { fill: #1C2428; stroke: var(--accent); stroke-width: 1.2 }
.scene .car-splitter { fill: var(--accent) }
.scene .car-glass { fill: #0A1416 }
.scene .car-glare { fill: none; stroke: rgba(255, 255, 255, .35); stroke-linecap: round }
.scene .car-stripe { fill: #E9EEEB; opacity: .85 }
.scene .car-roundel { fill: #E9EEEB }
.scene .car-number { fill: #0A0D0E; font: 700 14px var(--display) }
.scene .car-head { fill: #FFF8D6 }
.scene .car-tail { fill: #5A1A14; transition: fill .2s }
.scene .car-tail.on { fill: #FF4A3A; filter: drop-shadow(0 0 6px #FF4A3A) drop-shadow(0 0 14px #FF4A3A) }
.scene .car-arch { fill: #0A0D0E }
.scene .car-tyre { fill: #121619; stroke: #2B363B; stroke-width: 2 }
.scene .car-rim circle { fill: #9AA19D }
.scene .car-rim path { stroke: #3A4448; stroke-width: 1.6 }
.scene .car-shadow { fill: #000; opacity: .55 }
.scene .car-speed line { stroke: var(--accent); stroke-width: 2; stroke-linecap: round; opacity: 0; transition: opacity .3s }
.scene .car-speed.on line { opacity: .55 }
.scene .corner { fill: none; stroke: var(--line-2); stroke-width: 26 }
.scene__caption { padding: 12px 18px 16px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line) }

/* ---------- the app, tab by tab */
/* one bar of tabs; a pill slides to the chosen one and fills from left to right while it is on screen */
.app-tabs { position: relative; display: inline-flex; flex-wrap: wrap; gap: 2px; margin: 34px 0 22px; padding: 4px;
  border: 1px solid var(--line-2); border-radius: 14px; background: var(--panel) }
.app-tabs__pill { position: absolute; top: 0; left: 0; border-radius: 10px; background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 40%, transparent); overflow: hidden; pointer-events: none;
  transition: transform .6s var(--spring), width .6s var(--spring), height .6s var(--spring) }
.app-tabs__pill i { position: absolute; left: 10px; right: 10px; bottom: 5px; height: 2px; border-radius: 2px; background: var(--accent); transform: scaleX(0); transform-origin: left }
.app-tabs__pill.run i { animation: tabtime var(--dwell, 6s) linear forwards }
.app-tabs.paused .app-tabs__pill i { animation-play-state: paused }
@keyframes tabtime { to { transform: scaleX(1) } }
.app-tabs button { position: relative; z-index: 1; border: 0; background: none; color: var(--muted); font: 600 14.5px var(--body);
  padding: 9px 16px; border-radius: 10px; cursor: pointer; transition: color .3s }
.app-tabs button:hover, .app-tabs button[aria-selected="true"] { color: var(--ink) }
.window { position: relative; border-radius: 16px; border: 1px solid var(--line-2); background: #0D1012; overflow: hidden;
  box-shadow: 0 40px 120px rgba(0, 0, 0, .35), var(--glow); transform: perspective(1600px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform .8s var(--ease-out) }
.window__bar { display: flex; align-items: center; gap: 7px; height: 34px; padding: 0 14px; background: #151A1D; border-bottom: 1px solid #283034 }
.window__bar i { width: 11px; height: 11px; border-radius: 50%; background: #283034 }
.window__bar span { margin-left: 10px; color: #6D7478; font: 500 12px var(--body) }
.window__shots { position: relative; aspect-ratio: 1440 / 780 }
/* a new screen wipes in from the side its tab sits on, led by a line of light; the old one drifts back and dims */
.window__shots { position: relative; aspect-ratio: 1440 / 780; overflow: hidden }
.window__shots img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top left; visibility: hidden }
.window__shots img.is-on { visibility: visible; z-index: 2 }
.window__shots img.is-off { visibility: visible; z-index: 1; animation: shot-out 1s var(--ease-in-out) both }
.window__shots[data-dir="1"] img.is-on.enter { animation: shot-in-right 1s var(--ease-in-out) both }
.window__shots[data-dir="-1"] img.is-on.enter { animation: shot-in-left 1s var(--ease-in-out) both }
@keyframes shot-in-right { from { clip-path: inset(0 0 0 100%); transform: translateX(4%) } to { clip-path: inset(0); transform: none } }
@keyframes shot-in-left { from { clip-path: inset(0 100% 0 0); transform: translateX(-4%) } to { clip-path: inset(0); transform: none } }
@keyframes shot-out { to { transform: scale(.96); filter: brightness(.45) } }
.window__wipe { position: absolute; top: 0; bottom: 0; width: 3px; z-index: 3; opacity: 0; pointer-events: none;
  background: var(--accent-2); box-shadow: 0 0 24px 4px var(--accent), 0 0 80px 10px color-mix(in srgb, var(--accent) 40%, transparent) }
.window__shots[data-dir="1"] .window__wipe.go { animation: wipe-right 1s var(--ease-in-out) both }
.window__shots[data-dir="-1"] .window__wipe.go { animation: wipe-left 1s var(--ease-in-out) both }
@keyframes wipe-right { 0% { left: 100%; opacity: 1 } 85% { opacity: 1 } 100% { left: 0; opacity: 0 } }
@keyframes wipe-left { 0% { left: 0; opacity: 1 } 85% { opacity: 1 } 100% { left: 100%; opacity: 0 } }
.app-caption { transition: opacity .35s }
.app-caption.swap { opacity: 0 }
.app-caption { margin-top: 18px; color: var(--muted); min-height: 3.4em; max-width: 52em }

/* ---------- why: one real corner, the chain behind one piece of advice */
.why { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 56px; align-items: start }
@media (max-width: 900px) { .why { grid-template-columns: minmax(0, 1fr); gap: 28px } }
.chain { display: grid; gap: 14px; position: relative }
.chain::before { content: ""; position: absolute; left: 21px; top: 30px; bottom: 30px; width: 2px; background: linear-gradient(var(--accent), var(--line)) }
.link { position: relative; display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 14px; padding: 16px 18px 16px 0 }
.link__dot { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--panel); border: 2px solid var(--accent); color: var(--accent); z-index: 1 }
.link__dot svg { width: 20px; height: 20px }
.link__card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 16px 18px }
.link__card small { display: block; color: var(--faint); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 4px }
.link__card p { margin: 0 }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px }
.chip { font-size: 12.5px; font-weight: 600; padding: 3px 9px; border-radius: 7px; background: color-mix(in srgb, var(--brake) 16%, transparent); color: var(--brake) }
.chip--warn { background: color-mix(in srgb, var(--coast) 18%, transparent); color: var(--coast) }
.big-loss { font: 700 54px/1 var(--display); color: var(--brake) }
.meter { margin-top: 10px; height: 10px; border-radius: 10px; background: var(--line); overflow: hidden; position: relative }
.meter i { position: absolute; inset: 0 auto 0 0; width: 0; background: linear-gradient(90deg, var(--brake), var(--coast)); border-radius: 10px; transition: width 1.6s var(--ease-out) }
.in .meter i { width: var(--to) }
.meter-legend { display: flex; justify-content: space-between; color: var(--faint); font-size: 12.5px; margin-top: 6px }

/* ---------- the setup to load: try it */
.pick { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; align-items: center }
@media (max-width: 900px) { .pick { grid-template-columns: minmax(0, 1fr); gap: 26px } }
.pit { background: var(--panel); border: 1px solid var(--line-2); border-radius: 22px; padding: 24px; box-shadow: var(--glow) }
.pit__head { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; letter-spacing: .06em; text-transform: uppercase }
.pit__load { font: 700 clamp(28px, 3.4vw, 40px)/1.05 var(--display); margin: 12px 0 4px; overflow-wrap: anywhere }
.pit__load span { display: inline-block; transition: transform .5s var(--spring), opacity .3s }
.pit__load span.flip { transform: translateY(-40%); opacity: 0 }
.pit__why { color: var(--accent); font-weight: 600; margin: 0 0 18px }
.files { list-style: none; margin: 0 0 20px; padding: 0; display: grid; gap: 6px }
.files li { display: flex; justify-content: space-between; align-items: center; padding: 9px 12px; border-radius: 10px; border: 1px solid var(--line);
  font: 500 14px var(--mono); color: var(--muted); transition: border-color .35s, color .35s, background-color .35s, transform .45s var(--spring) }
.files li.on { border-color: var(--accent); color: var(--ink); background: var(--accent-soft); transform: translateX(6px) }
.files li.on::after { content: "Load"; font: 600 12px var(--body); color: var(--accent) }
html[data-lang="th"] .files li.on::after { content: "โหลด" }
.controls { display: grid; gap: 14px }
.temp { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 14px; align-items: center }
.temp label { font-weight: 600; font-size: 14px }
.temp output { font: 700 26px var(--display); min-width: 3.4ch; text-align: right; color: var(--ink) }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 6px; border-radius: 6px; background: linear-gradient(90deg, #6EA8E8, var(--throttle), var(--coast), var(--brake)); outline: none }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 24px; height: 24px; border-radius: 50%; background: var(--panel); border: 3px solid var(--accent); cursor: grab; transition: transform .3s var(--spring) }
input[type="range"]::-webkit-slider-thumb:active { transform: scale(1.2); cursor: grabbing }
input[type="range"]::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: var(--panel); border: 3px solid var(--accent) }
.toggle { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-weight: 600; font-size: 14px; user-select: none }
.toggle input { position: absolute; opacity: 0; width: 1px; height: 1px }
.toggle .track { width: 44px; height: 26px; border-radius: 99px; background: var(--line-2); position: relative; transition: background-color .3s }
.toggle .knob { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--panel); box-shadow: 0 1px 4px rgba(0, 0, 0, .3); transition: transform .45s var(--spring) }
.toggle input:checked + .track { background: #6EA8E8 }
.toggle input:checked + .track .knob { transform: translateX(18px) }
.toggle input:focus-visible + .track { outline: 2px solid var(--accent); outline-offset: 3px }

/* ---------- everything else, in a grid */
.bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; margin-top: 40px }
.tile { grid-column: span 2; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 24px; position: relative; overflow: hidden;
  transition: transform .6s var(--spring), border-color .4s }
.tile:hover { transform: translateY(-4px); border-color: var(--line-2) }
.tile--wide { grid-column: span 3 }
.tile p { margin: 0; color: var(--muted); font-size: 15px }
.tile svg.ico { width: 30px; height: 30px; color: var(--accent); margin-bottom: 16px }
@media (max-width: 900px) { .bento { grid-template-columns: minmax(0, 1fr) } .tile, .tile--wide { grid-column: auto } }
.wave { display: flex; gap: 3px; align-items: center; height: 28px; margin-top: 16px }
.wave i { width: 4px; border-radius: 4px; background: var(--accent); height: 30%; animation: wave 1.2s var(--ease-in-out) infinite; animation-delay: calc(var(--k) * -90ms) }
@keyframes wave { 50% { height: 100% } }
.lang-flip { display: inline-grid; margin-top: 14px; font: 700 26px var(--display) }
.lang-flip span { grid-area: 1 / 1; animation: flip 6s var(--ease-in-out) infinite; color: var(--ink) }
.lang-flip span + span { animation-delay: -3s }
@keyframes flip { 0%, 40% { opacity: 1; transform: none } 50%, 90% { opacity: 0; transform: translateY(-40%) } 100% { opacity: 1; transform: none } }

/* ---------- privacy: five switches, every one off */
.privacy { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 56px; align-items: center }
@media (max-width: 900px) { .privacy { grid-template-columns: minmax(0, 1fr); gap: 26px } }
.switches { list-style: none; margin: 0; padding: 22px; display: grid; gap: 4px; background: var(--panel); border: 1px solid var(--line); border-radius: 20px }
.switches li { display: flex; align-items: center; gap: 14px; padding: 12px 6px; border-bottom: 1px solid var(--line); font-weight: 500 }
.switches li:last-child { border-bottom: 0 }
.switches .track { width: 44px; height: 26px; border-radius: 99px; background: var(--accent); position: relative; flex: none; transition: background-color .4s }
.switches .knob { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--panel); transform: translateX(18px);
  transition: transform .55s var(--spring); transition-delay: calc(var(--k) * 140ms + 300ms) }
.switches .track { transition-delay: calc(var(--k) * 140ms + 300ms) }
.in .switches .knob, .switches.in .knob { transform: none }
.in .switches .track, .switches.in .track { background: var(--line-2) }
.switches small { margin-left: auto; color: var(--faint); font-size: 12.5px }

/* ---------- coming soon */
.soon { text-align: center; display: grid; justify-items: center }
.soon .sub { margin-inline: auto }
.soon__badge { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 22px; padding: 7px 14px; border-radius: 99px;
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line)); background: var(--accent-soft); color: var(--accent); font: 600 13.5px var(--body) }
.soon__badge i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 var(--accent); animation: soon-pulse 1.8s var(--ease-out) infinite }
@keyframes soon-pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 70%, transparent) } 100% { box-shadow: 0 0 0 12px transparent } }
.soon .h2 { font-size: clamp(56px, 9vw, 120px) }

@media (prefers-reduced-motion: reduce) {
  html.js [data-reveal] { opacity: 1; transform: none }
  .split .w > span { transform: none }
  .boards { height: auto }
  .boards__stick { position: relative; height: auto; padding-block: 80px }
}