/* =========================================================================
   INFINITE DRIVE — showcase site
   Aesthetic: night-highway. Warm asphalt near-black, hazard-orange accent,
   editorial lowercase serif section heads (a nod to the reference template),
   mono instrument numerals. Committed single dark theme by design.
   ========================================================================= */

/* ----- fonts ----- */
@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700;800&family=Instrument+Serif:ital@0;1&family=Space+Mono:wght@400;700&display=swap');

/* ----- tokens ----- */
:root {
  /* asphalt & hazard palette */
  --asphalt:    #121011;   /* base ground, warm-biased black          */
  --asphalt-2:  #191615;   /* raised surface                          */
  --asphalt-3:  #221d1b;   /* elevated / hover                        */
  --asphalt-4:  #2c2523;   /* borders on dark cards                   */

  --ink:        #f4efe7;   /* primary text                            */
  --muted:      #a89f94;   /* secondary text (warm concrete grey)     */
  --faint:      #6b635b;   /* tertiary / captions                     */

  --flare:      #ec5a24;   /* hazard / brake-light orange — the accent*/
  --flare-hi:   #ff7d47;   /* brighter orange for glows               */
  --signal:     #e9b949;   /* road-marking amber, used sparingly      */
  --cool:       #5f7f97;   /* cold atmospheric horizon                */

  --line:       rgba(244, 239, 231, 0.10);
  --line-2:     rgba(244, 239, 231, 0.06);

  /* type */
  --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --sans:  'Archivo', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono:  'Space Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  /* rhythm */
  --pad: clamp(1.25rem, 5vw, 6rem);
  --maxw: 1240px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ----- reset-ish ----- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important;
      transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  background: var(--asphalt);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.075rem);
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  /* subtle asphalt grain + warm vignette */
  background-image:
    radial-gradient(120% 80% at 50% -10%, rgba(236, 90, 36, 0.10), transparent 55%),
    radial-gradient(90% 60% at 100% 8%, rgba(95, 127, 151, 0.07), transparent 60%);
  background-attachment: fixed;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* asphalt grain overlay */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.5;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
}

/* =========================================================================
   layout helpers
   ========================================================================= */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.section { position: relative; z-index: 2; padding-block: clamp(4.5rem, 10vw, 9rem); }
.section--tight { padding-block: clamp(3rem, 7vw, 5.5rem); }

/* editorial section header: mono eyebrow + big lowercase serif w/ period */
.head { display: flex; flex-direction: column; gap: 0.9rem; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--flare);
  display: inline-flex; align-items: center; gap: 0.75rem;
}
.eyebrow::before {
  content: "";
  width: 1.6rem; height: 1px;
  background: var(--flare);
  display: inline-block;
}
.head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.6rem, 8vw, 5.6rem);
  line-height: 0.95;
  letter-spacing: -0.01em;
  text-transform: lowercase;
  margin: 0;
  text-wrap: balance;
  color: var(--ink);
}
.head h2 .dot { color: var(--flare); }
.head p { max-width: 60ch; color: var(--muted); margin: 0.4rem 0 0; }

/* dashed road-line divider */
/* ---- animated road divider (traffic driven by script.js) ---- */
.roadline { position: relative; z-index: 2; height: 70px; border: 0; margin: 0;
  overflow: hidden; background: #0c0a0a;                 /* dark asphalt */
  border-top: 3px solid rgba(244, 239, 231, 0.82);
  border-bottom: 3px solid rgba(244, 239, 231, 0.82);
  box-sizing: border-box; }
/* faint asphalt sheen */
.roadline::after { content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), transparent 34%, rgba(0,0,0,0.22)); }
/* dashed centre line (static — it's painted on the road) */
.roadline__centre { position: absolute; left: 0; right: 0; top: 50%; height: 3px; transform: translateY(-50%);
  z-index: 1; opacity: 0.8;
  background: repeating-linear-gradient(90deg, var(--signal) 0 30px, transparent 30px 64px); }
.road__car { position: absolute; left: 0; top: 0; z-index: 2; will-change: transform; }
.road__car img { display: block; height: 24px; width: auto;
  filter: drop-shadow(0 2px 3px rgba(0,0,0,0.5)); }
.road__car.flip img { transform: scaleX(-1); }         /* face right (base sprite faces left) */

/* =========================================================================
   top nav
   ========================================================================= */
.nav {
  position: sticky; top: 0; z-index: 60;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--asphalt) 78%, transparent);
  border-bottom: 1px solid var(--line-2);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.nav__in { display: flex; align-items: center; justify-content: space-between;
  height: 64px; }
.brand { display: inline-flex; align-items: baseline; gap: 0.5ch;
  font-family: var(--mono); font-weight: 700; letter-spacing: 0.02em;
  font-size: 0.95rem; text-transform: uppercase; }
.brand b { color: var(--flare); font-weight: 700; }
.brand .idx { color: var(--faint); font-weight: 400; margin-left: 0.4ch; font-size: 0.7rem; letter-spacing: 0.2em; }
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2.2rem); }
.nav__links a {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--muted);
  transition: color 0.2s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links .navlink { position: relative; }
.nav__links .navlink::after { content: ""; position: absolute; left: 0; bottom: -6px;
  height: 1px; width: 0; background: var(--flare); transition: width 0.25s var(--ease); }
.nav__links .navlink:hover::after { width: 100%; }
.nav .hide-sm { display: inline; }

/* pill button */
.pill {
  --pc: var(--flare);
  position: relative;
  display: inline-flex; align-items: center; gap: 0.6ch;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em;
  text-transform: uppercase; font-weight: 700;
  padding: 0.82em 1.25em; border-radius: 100px;
  background: var(--pc); color: #160b04;
  border: 1px solid var(--pc);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s, color 0.2s;
  box-shadow: 0 0 0 0 rgba(236, 90, 36, 0.5);
}
/* invisible hover/hit region extends 8px past the visual box, so the -2px lift
   can never move the edge out from under the cursor (that was the flicker) */
.pill::after { content: ""; position: absolute; inset: -8px; border-radius: inherit; }
.pill:hover { transform: translateY(-2px); color: var(--ink);
  box-shadow: 0 12px 30px -8px rgba(236, 90, 36, 0.6); }
.pill--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.pill--ghost:hover { transform: translateY(-2px); border-color: var(--flare); color: var(--flare); box-shadow: none; }

/* nav pill: out-specify ".nav__links a" — dark & legible at rest, cream/white on hover */
.nav__links a.pill { color: #160b04; }
.nav__links a.pill:hover { color: var(--ink); }
.pill svg { width: 0.8em; height: 0.8em; }

/* =========================================================================
   hero
   ========================================================================= */
.hero { position: relative; z-index: 2; overflow: hidden;
  min-height: min(94svh, 900px); display: flex; align-items: center;
  padding-block: clamp(3rem, 8vw, 5rem); }

/* receding perspective road */
.hero__road { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.hero__road::before { /* horizon glow */
  content: ""; position: absolute; left: 50%; top: 34%; transform: translate(-50%, -50%);
  width: 90vw; height: 55vh;
  background: radial-gradient(ellipse at center, rgba(236,90,36,0.22), rgba(233,185,73,0.07) 35%, transparent 66%);
  filter: blur(8px);
}
.hero__grid { position: absolute; left: 50%; bottom: -6%; transform: translateX(-50%);
  width: 240vw; height: 78vh; z-index: 0;
  background-image:
    linear-gradient(rgba(244,239,231,0.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,239,231,0.07) 1px, transparent 1px);
  background-size: 5.2vw 5.2vw;
  transform-origin: bottom center;
  transform: translateX(-50%) perspective(60vh) rotateX(74deg);
  mask-image: linear-gradient(to top, #000 8%, transparent 72%);
  -webkit-mask-image: linear-gradient(to top, #000 8%, transparent 72%);
}
/* animated centre lane dashes */
/* solid road-edge (shoulder) lines — a wide box whose left/right borders
   converge under the same perspective, framing the dashed centre line */
.hero__shoulders { position: absolute; left: 50%; bottom: 0; z-index: 1;
  width: 20vw; height: 62vh;
  border-left: 0.45vw solid rgba(244, 239, 231, 0.5);
  border-right: 0.45vw solid rgba(244, 239, 231, 0.5);
  transform-origin: bottom center;
  transform: translateX(-50%) perspective(50vh) rotateX(76deg);
  mask-image: linear-gradient(to top, #000 4%, transparent 60%);
  -webkit-mask-image: linear-gradient(to top, #000 4%, transparent 60%);
}
.hero__lane { position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
  width: 0.6vw; height: 62vh; z-index: 2;
  /* dash period = 20vh (dash 10vh + gap 10vh) — animation shifts exactly one period so it never cuts */
  background: repeating-linear-gradient(to top, var(--signal) 0 10vh, transparent 10vh 20vh);
  transform-origin: bottom center;
  transform: translateX(-50%) perspective(50vh) rotateX(76deg);
  mask-image: linear-gradient(to top, #000 0%, transparent 62%);
  -webkit-mask-image: linear-gradient(to top, #000 0%, transparent 62%);
  opacity: 0.85;
  animation: laneflow 1.5s linear infinite;
}
@keyframes laneflow { from { background-position-y: 20vh; } to { background-position-y: 0; } }

.hero__in { position: relative; z-index: 3; display: grid;
  grid-template-columns: 1.05fr 0.95fr; gap: clamp(1.5rem, 4vw, 3rem); align-items: center; width: 100%; }

.hero__tag { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.26em;
  text-transform: uppercase; color: var(--flare); display: inline-flex; gap: 0.7rem; align-items: center;
  margin-bottom: 1.4rem; }
.hero__tag::before { content: ""; width: 2rem; height: 1px; background: var(--flare); }

.hero h1 { margin: 0; font-family: var(--sans); font-weight: 800;
  font-size: clamp(3.1rem, 11vw, 8.2rem); line-height: 0.86; letter-spacing: -0.035em;
  text-transform: uppercase; }
.hero h1 .l2 { display: block; color: transparent;
  -webkit-text-stroke: 1.4px var(--ink); }
.hero h1 .l2 em { font-style: normal; -webkit-text-stroke: 1.4px var(--flare); color: transparent; }
.hero h1 .pd { -webkit-text-stroke: 0; color: var(--flare); }

/* inline code */
code { font-family: var(--mono); font-size: 0.85em; color: var(--flare);
  background: var(--asphalt-3); border: 1px solid var(--asphalt-4);
  padding: 0.08em 0.4em; border-radius: 4px; }
.head p code, .pcard p code { background: color-mix(in srgb, var(--flare) 12%, transparent); border-color: transparent; }
.hero__sub { max-width: 52ch; margin: 1.6rem 0 2rem;
  display: flex; flex-direction: column; gap: 0.85rem; }
.hero__sub p { margin: 0; color: var(--muted); font-size: 1rem; }
.hero__sub .hero__lead { color: var(--ink); font-size: 1.22rem; line-height: 1.4;
  font-weight: 500; letter-spacing: -0.005em; }
.hero__sub b { color: var(--ink); font-weight: 600; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.85rem; align-items: center; }

/* hero car */
.hero__car { position: relative; transform: scale(1.34); transform-origin: center; }
.hero__car img { width: 100%; height: auto; object-fit: contain; filter: drop-shadow(0 40px 40px rgba(0,0,0,0.6)); animation: hover-car 7s ease-in-out infinite; }
.hero__car::after { /* ground shadow */
  content: ""; position: absolute; left: 50%; bottom: 4%; transform: translateX(-50%);
  width: 62%; height: 5%; background: radial-gradient(ellipse, rgba(0,0,0,0.65), transparent 70%);
  filter: blur(6px); }
@keyframes hover-car { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

/* hero stat strip */
.hero__stats { position: relative; z-index: 3; display: grid; grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  margin-top: clamp(2rem, 5vw, 3.5rem); }
.stat { padding: 1.4rem 1.5rem 0; text-align: center; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat__note { display: block; margin-top: 0.5rem; font-family: var(--mono);
  font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--cool);
  font-style: normal; }
.stat b { display: block; font-family: var(--mono); font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.5rem); line-height: 1; color: var(--ink);
  font-variant-numeric: tabular-nums; }
.stat b i { font-style: normal; color: var(--flare); }
.stat span { display: block; margin-top: 0.5rem; font-family: var(--mono);
  font-size: 0.66rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--faint); }

/* =========================================================================
   overview "the drive."
   ========================================================================= */
.manifesto { display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2.2rem, 5vw, 3.8rem) clamp(2.5rem, 6vw, 5rem); align-items: start; }
.mblock { border-top: 2px solid var(--flare); padding-top: 1.3rem; }
.mblock h3 { font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.55rem, 3.1vw, 2.15rem); line-height: 1.06; letter-spacing: -0.005em;
  text-transform: lowercase; margin: 0 0 1rem; text-wrap: balance; }
.mblock p { margin: 0 0 0.9rem; color: var(--muted); max-width: 52ch; }
.mblock p:last-child { margin-bottom: 0; }
.mblock b { color: var(--ink); font-weight: 600; }

/* =========================================================================
   physics.
   ========================================================================= */
.physics { background: var(--asphalt-2); border-block: 1px solid var(--line-2); }
.pgrid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1rem; }
.pcard { grid-column: span 4; background: var(--asphalt);
  border: 1px solid var(--asphalt-4); border-radius: 4px; padding: 1.6rem 1.5rem;
  position: relative; overflow: hidden;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease); }
.pcard:hover { transform: translateY(-4px); border-color: var(--flare); }
.pcard__n { font-family: var(--mono); font-size: 0.7rem; color: var(--faint);
  letter-spacing: 0.2em; }
.pcard h3 { font-family: var(--serif); font-weight: 400; font-size: 1.7rem; line-height: 1.05;
  margin: 0.5rem 0 0.6rem; text-transform: lowercase; }
.pcard p { margin: 0; color: var(--muted); font-size: 0.94rem; }
.pcard--wide { grid-column: span 6; }
.pcard--tall { grid-column: span 6; display: flex; flex-direction: column; justify-content: space-between; gap: 1.4rem; }

/* friction circle diagram */
.friction { display: grid; grid-template-columns: 168px 1fr; gap: 1.5rem; align-items: center; }
.friction__text p + p { margin-top: 0.7rem; }
.fc { width: 168px; height: 168px; position: relative; }
.fc svg { width: 100%; height: 100%; overflow: visible; }
.fc__label { position: absolute; font-family: var(--mono); font-size: 0.6rem;
  letter-spacing: 0.1em; color: var(--faint); text-transform: uppercase; }

/* tuning param chips */
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.4rem; }
.chip { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em;
  padding: 0.3em 0.7em; border: 1px solid var(--asphalt-4); border-radius: 100px;
  color: var(--muted); background: var(--asphalt-3); }
.chip b { color: var(--flare); font-weight: 700; }

/* driving-assists detail panel */
.assists { margin-top: 1rem; display: grid; grid-template-columns: 0.82fr 1.18fr;
  gap: clamp(1.5rem, 4vw, 3rem); padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--asphalt-4); border-radius: 6px;
  background: linear-gradient(180deg, var(--asphalt), var(--asphalt-2)); }
.assists__intro h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(1.7rem, 4vw, 2.2rem);
  text-transform: lowercase; margin: 0.4rem 0 0.7rem; line-height: 1; }
.assists__intro p { margin: 0; color: var(--muted); font-size: 0.95rem; max-width: 32ch; }
.assist-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; }
.assist { border-left: 2px solid var(--flare); padding-left: 1.1rem; }
.assist__body b { display: flex; align-items: center; gap: 0.6rem; font-family: var(--sans);
  font-weight: 700; color: var(--ink); margin-bottom: 0.25rem; }
.assist__body p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.assist__body p + p { margin-top: 0.6rem; }
@media (max-width: 720px) { .assists { grid-template-columns: 1fr; } }

/* =========================================================================
   the world.
   ========================================================================= */
.wgrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.wcard { position: relative; padding: 1.9rem; border: 1px solid var(--asphalt-4);
  border-radius: 4px; background: linear-gradient(180deg, var(--asphalt-2), var(--asphalt));
  overflow: hidden; transition: border-color 0.3s var(--ease); }
.wcard:hover { border-color: var(--line); }
.wcard::after { content: ""; position: absolute; right: -30px; top: -30px; width: 120px; height: 120px;
  border-radius: 50%; background: radial-gradient(circle, rgba(236,90,36,0.16), transparent 70%);
  opacity: 0; transition: opacity 0.4s var(--ease); }
.wcard:hover::after { opacity: 1; }
.wcard .ic { width: 40px; height: 40px; color: var(--flare); margin-bottom: 1.1rem; }
.wcard h3 { font-family: var(--serif); font-weight: 400; font-size: 1.9rem; text-transform: lowercase;
  margin: 0 0 0.6rem; line-height: 1; }
.wcard p { margin: 0; color: var(--muted); font-size: 0.96rem; max-width: 52ch; }
.wcard p + p { margin-top: 0.8rem; }
.wcard__tag { position: absolute; top: 1.5rem; right: 1.6rem; font-family: var(--mono);
  font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--faint); }

/* full-width world cards + island feature */
.wcard--wide { grid-column: 1 / -1; }
.wcard--wide p { max-width: 68ch; }
.wcard--feature { padding: clamp(1.9rem, 4vw, 3rem);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(95,127,151,0.14), transparent 55%),
    linear-gradient(180deg, var(--asphalt-2), var(--asphalt)); }
.wcard--feature::before { content: ""; position: absolute; left: 0; bottom: 0; right: 0; height: 3px;
  background: repeating-linear-gradient(90deg, var(--signal) 0 26px, transparent 26px 58px); opacity: 0.4; }
.wcard--feature h3 { font-size: clamp(2rem, 4vw, 2.9rem); margin-bottom: 0.9rem; }
.wcard--feature .ic { color: var(--cool); }

/* =========================================================================
   the garage.
   ========================================================================= */
.garage { background: var(--asphalt-2); border-block: 1px solid var(--line-2); }
.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2rem; }
.filter { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 0.5em 0.95em; border-radius: 100px; border: 1px solid var(--asphalt-4);
  background: transparent; color: var(--muted); cursor: pointer;
  transition: all 0.2s var(--ease); }
.filter:hover { color: var(--ink); border-color: var(--line); }
.filter.is-on { background: var(--flare); color: #150c07; border-color: var(--flare); font-weight: 700; }

.cars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.car {
  position: relative; border: 1px solid var(--asphalt-4); border-radius: 6px; overflow: hidden;
  background:
    radial-gradient(120% 80% at 50% 12%, rgba(95,127,151,0.10), transparent 60%),
    linear-gradient(180deg, var(--asphalt-3), var(--asphalt));
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  display: flex; flex-direction: column;
}
.car:hover { transform: translateY(-6px); border-color: var(--flare);
  box-shadow: 0 24px 50px -24px rgba(0,0,0,0.8); }
.car__stage { position: relative; aspect-ratio: 4/3; display: grid; place-items: center;
  padding: 1.2rem 1.2rem 0.4rem; }
.car__stage img { width: 100%; height: 100%; object-fit: contain;
  filter: drop-shadow(0 20px 18px rgba(0,0,0,0.55));
  transition: transform 0.4s var(--ease); }
.car:hover .car__stage img { transform: scale(1.06) translateY(-4px); }
.car__stage::after { content: ""; position: absolute; left: 50%; bottom: 10%; transform: translateX(-50%);
  width: 60%; height: 8%; background: radial-gradient(ellipse, rgba(0,0,0,0.6), transparent 70%);
  filter: blur(5px); transition: width 0.4s var(--ease); }
.car:hover .car__stage::after { width: 66%; }
.car__cls { position: absolute; top: 0.85rem; left: 0.95rem; font-family: var(--mono);
  font-size: 0.6rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--faint); }
.car__body { padding: 0.4rem 1.3rem 1.4rem; border-top: 1px solid var(--line-2); margin-top: auto; }
.car__name { font-family: var(--serif); font-weight: 400; font-size: 1.5rem; line-height: 1;
  margin: 0.6rem 0 0.15rem; }
.car__muse { font-family: var(--mono); font-size: 0.68rem; color: var(--faint); letter-spacing: 0.02em; }
.car__specs { display: flex; gap: 1.1rem; margin-top: 0.9rem; }
.car__specs div { display: flex; flex-direction: column; }
.car__specs b { font-family: var(--mono); font-weight: 700; font-size: 0.98rem;
  color: var(--ink); font-variant-numeric: tabular-nums; }
.car__specs span { font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--faint); margin-top: 0.15rem; }
.car__flag { position: absolute; top: 0.85rem; right: 0.95rem; font-family: var(--mono);
  font-size: 0.58rem; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.3em 0.6em;
  border-radius: 100px; background: var(--flare); color: #150c07; font-weight: 700; }
.car__flag--cool { background: transparent; color: var(--cool); border: 1px solid var(--cool); }

/* roster-extra strip */
.roster { margin-top: 1.6rem; padding: 1.5rem 1.6rem; border: 1px dashed var(--asphalt-4);
  border-radius: 6px; display: flex; flex-wrap: wrap; align-items: center; gap: 0.7rem 1rem; }
.roster b { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--muted); margin-right: 0.5rem; }
.roster .rchip { font-family: var(--mono); font-size: 0.74rem; color: var(--ink);
  padding: 0.3em 0.75em; border-radius: 100px; background: var(--asphalt-3); border: 1px solid var(--asphalt-4); }
.roster .rchip s { color: var(--faint); text-decoration: none; font-size: 0.6rem; letter-spacing: 0.1em; }

/* =========================================================================
   progress.
   ========================================================================= */
.timeline { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); }
.tl__col h3 { font-family: var(--mono); font-weight: 700; font-size: 0.78rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink); margin: 0 0 1.4rem; display: flex; align-items: center; gap: 0.7rem; }
.tl__col h3 .tick { width: 10px; height: 10px; border-radius: 50%; background: var(--flare); }
.tl__col--next h3 .tick { background: transparent; border: 2px solid var(--cool); }
.tl { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--asphalt-4); }
.tl li { position: relative; padding: 0 0 1.5rem 1.7rem; }
.tl li::before { content: ""; position: absolute; left: -5px; top: 0.45rem; width: 9px; height: 9px;
  border-radius: 50%; background: var(--flare); box-shadow: 0 0 0 4px var(--asphalt); }
.tl--next li::before { background: var(--asphalt); border: 2px solid var(--cool); }
.tl li b { display: block; color: var(--ink); font-weight: 600; }
.tl li span { color: var(--muted); font-size: 0.92rem; }

/* =========================================================================
   controls.
   ========================================================================= */
.controls { background: var(--asphalt-2); border-block: 1px solid var(--line-2); }
.ctrlgrid { display: grid; grid-template-columns: 0.82fr 1.18fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.ctrlgrid .drivedemo { position: sticky; top: 90px; }
.keys { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.6rem; }
.keycap { display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  padding: 1rem 0.6rem; border: 1px solid var(--asphalt-4); border-radius: 8px; background: var(--asphalt);
  transition: all 0.2s var(--ease); }
.keycap:hover { border-color: var(--flare); transform: translateY(-3px); }
.keycap kbd { font-family: var(--mono); font-weight: 700; font-size: 0.92rem; color: var(--ink);
  background: var(--asphalt-3); border: 1px solid var(--asphalt-4); border-bottom-width: 3px;
  border-radius: 6px; padding: 0.35em 0.7em; min-width: 2.2em; text-align: center; }
.keycap span { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); text-align: center; }
.keycap.wide { grid-column: span 2; }
.keycap.wide kbd { min-width: 100%; }
.ctrl-copy h3 { font-family: var(--serif); font-weight: 400; font-size: clamp(1.8rem, 4vw, 2.6rem);
  text-transform: lowercase; margin: 0 0 1rem; line-height: 1; }
.ctrl-copy p { color: var(--muted); margin: 0 0 1rem; max-width: 58ch; }
.ctrl-copy .ctrl-note { color: var(--faint); font-size: 0.92rem; }
.ctrl-copy .extra { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.2rem; }

/* animated throttle / brake demo */
.drivedemo { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
.pedals { display: flex; gap: 1.8rem; align-items: flex-end; }
.pedal { display: flex; flex-direction: column; align-items: center; gap: 0.7rem; }
.pedal__cap { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--faint); }
.pedal__track { width: 58px; height: 200px; background: var(--asphalt-3);
  border: 1px solid var(--asphalt-4); border-radius: 12px; position: relative; overflow: hidden;
  display: flex; align-items: flex-end; }
.pedal__track::before { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background-image: repeating-linear-gradient(to top, transparent 0 19px, rgba(244,239,231,0.05) 19px 20px); }
.pedal__fill { width: 100%; height: 0%; border-radius: 0 0 11px 11px; transition: height 0.3s ease; }
.pedal__fill--gas { background: linear-gradient(to top, #2f7a46, #58a56c);
  box-shadow: 0 0 24px rgba(74,160,105,0.40); }
.pedal__fill--brake { background: linear-gradient(to top, #b62f1e, #ef5a3a);
  box-shadow: 0 0 26px rgba(216,58,42,0.45); }
.demokeys { display: flex; gap: 0.6rem; flex-wrap: wrap; justify-content: center; }
.demokeys .keycap { padding: 0.85rem 0.8rem; min-width: 4.6rem;
  transition: background 0.12s var(--ease), border-color 0.12s var(--ease), transform 0.12s var(--ease); }
.demokeys .keycap:hover { transform: none; border-color: var(--asphalt-4); }
.keycap.is-down { background: var(--flare); border-color: var(--flare); transform: translateY(2px); }
.keycap.is-down kbd { background: rgba(0,0,0,0.16); color: #160b04; border-color: rgba(0,0,0,0.22);
  border-bottom-width: 1px; }
.keycap.is-down span { color: #2a1206; }
.demo__mode { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted); transition: color 0.25s var(--ease);
  text-align: center; }
.demo__mode.sport { color: var(--flare); }
.demo__mode.precision { color: #66b783; }

/* =========================================================================
   footer / CTA
   ========================================================================= */
.foot { position: relative; z-index: 2; text-align: center;
  padding-block: clamp(4rem, 9vw, 7rem); overflow: hidden; }
.foot::before { content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(70% 120% at 50% 120%, rgba(236,90,36,0.22), transparent 60%); }
.foot h2 { font-family: var(--sans); font-weight: 800; text-transform: uppercase;
  font-size: clamp(2.6rem, 9vw, 6.5rem); line-height: 0.9; letter-spacing: -0.03em; margin: 0 0 1.5rem; }
.foot h2 em { font-style: normal; color: transparent; -webkit-text-stroke: 1.3px var(--flare); }
.foot p { color: var(--muted); max-width: 42ch; margin: 0 auto 2rem; }
.foot__meta { margin-top: clamp(3rem, 7vw, 5rem); padding-top: 1.6rem; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--faint); }
.foot__meta a:hover { color: var(--flare); }

/* =========================================================================
   scroll reveal
   ========================================================================= */
.js [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
[data-reveal].in { opacity: 1; transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-delay="3"] { transition-delay: 0.24s; }

/* =========================================================================
   responsive
   ========================================================================= */
@media (max-width: 960px) {
  .hero__in { grid-template-columns: 1fr; }
  .hero__car { max-width: 460px; margin-inline: auto; order: -1; transform: scale(1.12); }
  .hero h1 { font-size: clamp(3rem, 15vw, 6rem); }
  .manifesto { grid-template-columns: 1fr; }
  .pcard, .pcard--wide, .pcard--tall { grid-column: span 6; }
  .wgrid { grid-template-columns: 1fr; }
  .cars { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: 1fr; }
  .ctrlgrid { grid-template-columns: 1fr; }
  .ctrlgrid .drivedemo { position: static; }
}
@media (max-width: 620px) {
  .nav__links .navlink { display: none; }
  .hero__stats { grid-template-columns: 1fr; }
  .stat { padding: 1.1rem 0 0; }
  .stat + .stat { border-left: 0; border-top: 1px solid var(--line); padding-top: 1.1rem; }
  .pgrid { grid-template-columns: 1fr; }
  .pcard, .pcard--wide, .pcard--tall { grid-column: auto; }
  .friction { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .cars { grid-template-columns: 1fr; }
  .keys { grid-template-columns: repeat(2, 1fr); }
  .head h2 { font-size: clamp(2.4rem, 13vw, 3.6rem); }
}