/* ==========================================================================
   CIHANG — product site
   Minimal, Apple-style layout. Light by default, dark via the nav toggle. Frosted-glass surfaces.
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --bg: #f5f4f1;
  --bg-alt: #ffffff;
  --bg-dark: #0c0c0d;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --muted-2: #86868b;
  --line: rgba(0, 0, 0, 0.08);
  --accent: #9a6544;          /* walnut */
  --accent-ink: #ffffff;
  --glass: rgba(255, 255, 255, 0.58);
  --glass-strong: rgba(255, 255, 255, 0.78);
  --glass-menu: rgb(250, 249, 247);
  --glass-line: rgba(255, 255, 255, 0.6);
  --bubble-user-bg: #1d1d1f;
  --bubble-user-ink: #f5f5f7;
  --bubble-bot-bg: rgba(0, 0, 0, 0.06);
  --bubble-bot-ink: #1d1d1f;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 12px 40px rgba(0,0,0,.06);
  --radius: 28px;
  --radius-s: 18px;
  --nav-h: 52px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Helvetica, Arial, sans-serif;
  /* the app inside the phone (v41): grouped-list look — grey screen, white cells, iOS-style segmented control */
  --app-bg: #f2f1ee;
  --app-cell: #ffffff;
  --seg: rgba(120, 120, 128, .14);
  --seg-on: #ffffff;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0c0c0d;
  --bg-alt: #161617;
  --bg-dark: #000000;
  --text: #f5f5f7;
  --muted: #a1a1a6;
  --muted-2: #86868b;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #d2a67f;
  --accent-ink: #1d1d1f;
  --glass: rgba(28, 28, 30, 0.55);
  --glass-strong: rgba(28, 28, 30, 0.8);
  --glass-menu: rgb(22, 22, 23);
  --glass-line: rgba(255, 255, 255, 0.12);
  --bubble-user-bg: #f5f5f7;
  --bubble-user-ink: #1d1d1f;
  --app-bg: #000000;
  --app-cell: #1c1c1e;
  --seg: rgba(120, 120, 128, .28);
  --seg-on: #636366;
  --bubble-bot-bg: rgba(255, 255, 255, 0.1);
  --bubble-bot-ink: #f5f5f7;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 40px rgba(0,0,0,.35);
  color-scheme: dark;
}

/* ---------- Reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color .35s ease, color .35s ease;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
figure { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, dl, dd { margin: 0; }
h1, h2, h3, h4 { text-wrap: balance; }
p, li, dd, figcaption, small, summary, .lede { text-wrap: pretty; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 100;
  padding: 10px 14px; background: var(--text); color: var(--bg); border-radius: 10px;
}
.skip:focus { top: 12px; }

/* ---------- Layout ---------- */
.container {
  width: min(1080px, 100% - 48px);
  margin-left: auto; margin-right: auto; margin-inline: auto;
}
.container--wide  { width: min(1400px, 100% - 48px); }
.container--narrow { width: min(760px, 100% - 48px); }

.section { padding-block: clamp(80px, 10vw, 140px); }
.section--alt  { background: var(--bg-alt); transition: background-color .35s ease; }
.section--dark { background: var(--bg-dark); color: #f5f5f7; }
.section--dark { --text: #f5f5f7; --muted: #a1a1a6; --line: rgba(255,255,255,.12); --glass: rgba(28,28,30,.55); --glass-line: rgba(255,255,255,.12); --accent: #d2a67f; }

.container + .container,
.container + .container--wide { margin-top: clamp(40px, 6vw, 72px); }

/* ---------- Glass ---------- */
.glass {
  background: var(--glass);
  -webkit-backdrop-filter: saturate(180%) blur(22px);
  backdrop-filter: saturate(180%) blur(22px);
  border: 1px solid var(--glass-line);
  box-shadow: var(--shadow);
}

/* ---------- Type ---------- */
.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}
.display {
  font-size: clamp(44px, 7.2vw, 88px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 700;
}
.headline {
  font-size: clamp(30px, 4.2vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 700;
  max-width: 24ch;
}
@media (max-width: 640px) { .br-lg { display: none; } }
.sub-headline {
  font-size: clamp(24px, 2.7vw, 31px);
  letter-spacing: -0.02em;
  font-weight: 700;
  margin-bottom: 28px;
}
.lede {
  font-size: clamp(18px, 1.6vw, 22px);
  line-height: 1.45;
  color: var(--muted);
  max-width: 62ch;
  margin-top: 22px;
  font-weight: 400;
}
.hero .lede { margin-left: auto; margin-right: auto; margin-inline: auto; }

/* ---------- Buttons ---------- */
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.hero .cta-row { justify-content: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 46px; padding: 0 22px; border-radius: 999px;
  font-weight: 500; font-size: 16px; letter-spacing: -0.01em;
  transition: transform .2s ease, background-color .2s ease, opacity .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); opacity: .9; }
.btn--primary { background: var(--text); color: var(--bg); }
.btn--ghost { border: 1px solid var(--line); background: var(--glass); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); }
.section--dark .btn--primary { background: #f5f5f7; color: #1d1d1f; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--glass-strong);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
  transition: background-color .35s ease;
}
.nav__inner {
  width: min(1080px, 100% - 48px); margin-left: auto; margin-right: auto; margin-inline: auto;
  height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.nav__brand { font-weight: 700; letter-spacing: .22em; font-size: 15px; }
.nav__links { display: flex; gap: 28px; font-size: 14px; color: var(--muted); }
.nav__links a { transition: color .2s ease; padding: 6px 0; }
.nav__links a:hover, .nav__links a.is-active { color: var(--text); }
.nav__actions { display: flex; align-items: center; gap: 6px; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 999px; border: 0; background: transparent;
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
  transition: background-color .2s ease;
}
.icon-btn:hover { background: var(--line); }
.icon-moon { display: none; }
:root[data-theme="dark"] .icon-sun { display: none; }
:root[data-theme="dark"] .icon-moon { display: block; }
.nav__menu { display: none; }
.nav__sheet-foot { display: none; }

@media (max-width: 820px) {
  .nav__menu { display: inline-flex; }
  .nav__links {
    position: absolute; left: 0; right: 0; top: var(--nav-h);
    flex-direction: column; gap: 0; padding: 8px 24px 16px;
    background: var(--glass-menu);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav__links a { padding: 12px 0; font-size: 17px; color: var(--text); border-bottom: 1px solid var(--line); }
  .nav__links a:last-child { border-bottom: 0; }
  .nav.is-open .nav__links { display: flex; }
}

/* ---------- Film (full-screen hero video) ---------- */
/* Edge-to-edge, one viewport tall. The 16:9 frame is cropped mostly from the top:
   main.js sets object-position so that at most ~4% of the frame is lost at the bottom,
   which keeps the captions burned into the film readable. */
.film { background: #000; }
.film__frame {
  position: relative; background: #000; overflow: hidden; width: 100%;
  height: calc(100vh - var(--nav-h));
  height: calc(100vh - var(--nav-h)); height: calc(100svh - var(--nav-h));
  min-height: 420px;
}
.film__frame video, .film__frame img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 85%; display: block; }
.video-controls {
  position: absolute; left: 24px; right: 24px; bottom: 22px; display: flex; align-items: center; gap: 12px; z-index: 2;
}
.video-time { color: #f5f5f7; font-size: 13px; font-variant-numeric: tabular-nums; text-shadow: 0 1px 2px rgba(0,0,0,.6); flex: none; min-width: 84px; }
.video-seek {
  -webkit-appearance: none; appearance: none; flex: 1; min-width: 0; height: 22px; margin: 0; background: transparent; cursor: pointer;
  --p: 0%;
}
.video-seek::-webkit-slider-runnable-track {
  height: 4px; border-radius: 999px;
  background: linear-gradient(90deg, #ffffff var(--p), rgba(255,255,255,.32) var(--p));
  box-shadow: 0 1px 2px rgba(0,0,0,.35);
}
.video-seek::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 14px; height: 14px; border-radius: 50%; background: #fff; margin-top: -5px;
  box-shadow: 0 1px 4px rgba(0,0,0,.45); transition: transform .15s ease;
}
.video-seek:hover::-webkit-slider-thumb, .video-seek:active::-webkit-slider-thumb { transform: scale(1.25); }
.video-seek::-moz-range-track { height: 4px; border-radius: 999px; background: rgba(255,255,255,.32); }
.video-seek::-moz-range-progress { height: 4px; border-radius: 999px; background: #fff; }
.video-seek::-moz-range-thumb { width: 14px; height: 14px; border: 0; border-radius: 50%; background: #fff; box-shadow: 0 1px 4px rgba(0,0,0,.45); }
.video-seek:focus-visible { outline: none; }
.video-seek:focus-visible::-webkit-slider-thumb { box-shadow: 0 0 0 4px rgba(255,255,255,.35); }
.vbtn {
  display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 14px;
  border-radius: 999px; cursor: pointer; font-size: 14px; font-weight: 500;
  color: #f5f5f7; background: rgba(28,28,30,.55); border: 1px solid rgba(255,255,255,.18);
  transition: transform .2s ease, background-color .2s ease;
}
.vbtn:hover { transform: translateY(-1px); background: rgba(28,28,30,.7); }
.vbtn svg { flex: none; }
#video-play { width: 40px; padding: 0; justify-content: center; }
.ic-sound, .ic-play { display: none; }
.vbtn[aria-pressed="true"] .ic-muted, #video-play[aria-pressed="true"] .ic-play { display: none; }
.vbtn[aria-pressed="true"] .ic-sound { display: block; }
#video-play[aria-pressed="false"] .ic-pause { display: none; }
#video-play[aria-pressed="false"] .ic-play { display: block; }
.film__cue {
  position: absolute; left: 50%; bottom: 58px; transform: translateX(-50%); z-index: 2;
  width: 40px; height: 40px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center;
  color: #fff; opacity: .85; animation: cue 2s ease-in-out infinite;
}
@keyframes cue { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 6px); } }
.film__intro { display: none; }
@media (max-width: 820px) {
  .film__frame { height: auto; aspect-ratio: 16 / 9; min-height: 0; }
  .film__frame video, .film__frame img { object-position: 50% 50%; }
  .film__cue { display: none; }
  .video-controls { left: 10px; right: 10px; bottom: 10px; gap: 8px; }
  .video-time { font-size: 11px; min-width: 66px; }
  .vbtn span { display: none; }
  #video-sound { width: 34px; padding: 0; justify-content: center; }
  .vbtn { height: 34px; padding: 0 12px; font-size: 13px; }
  #video-play { width: 34px; }
}

/* ---------- Buy ---------- */
.buy { padding-block: clamp(56px, 7vw, 96px) clamp(40px, 6vw, 80px); }
.buy__grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(28px, 4vw, 64px); align-items: start; }
.buy__gallery { position: sticky; top: calc(var(--nav-h) + 24px); }
.buy__main {
  border-radius: var(--radius); overflow: hidden; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow);
  aspect-ratio: 16 / 10;
}
.buy__main img { width: 100%; height: 100%; object-fit: cover; transition: opacity .35s ease; }
.buy__main img.is-fading { opacity: 0; }
.buy__thumbs { display: flex; gap: 10px; margin-top: 12px; }
.buy__thumbs button {
  width: 76px; height: 56px; padding: 0; border-radius: 12px; overflow: hidden; background: #fff; cursor: pointer;
  border: 1.5px solid var(--line); transition: border-color .2s ease, transform .2s ease;
}
.buy__thumbs button img { width: 100%; height: 100%; object-fit: cover; }
.buy__thumbs button:hover { transform: translateY(-1px); }
.buy__thumbs button.is-active { border-color: var(--text); }

.buy__title { font-size: clamp(40px, 5vw, 64px); letter-spacing: .04em; font-weight: 700; line-height: 1; }
.buy__sub { margin-top: 12px; color: var(--muted); font-size: 17px; max-width: 44ch; }
.buy__group { margin-top: 28px; }
.buy__group h3 { font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.buy__options { display: grid; gap: 10px; }
.opt {
  text-align: left; padding: 14px 16px; border-radius: 16px; border: 1.5px solid var(--line); background: var(--bg-alt);
  cursor: pointer; display: flex; flex-direction: column; gap: 3px; transition: border-color .2s ease, box-shadow .2s ease;
}
.opt strong { font-size: 16px; font-weight: 600; }
.opt span { font-size: 14px; color: var(--muted); line-height: 1.4; }
.opt:hover { border-color: rgba(0,0,0,.25); }
.opt.is-active { border-color: var(--text); box-shadow: 0 0 0 1px var(--text) inset; }
.buy__swatches { display: flex; gap: 10px; }
.swatch {
  display: inline-flex; align-items: center; gap: 10px; padding: 10px 14px 10px 10px; border-radius: 999px;
  border: 1.5px solid var(--line); background: var(--bg-alt); font-size: 14px; font-weight: 500; cursor: pointer;
}
.swatch.is-active { border-color: var(--text); }
.swatch i { width: 24px; height: 24px; border-radius: 50%; box-shadow: inset 0 0 0 1px rgba(0,0,0,.08); }
.swatch__cream { background: linear-gradient(135deg, #ebe5da 50%, #6b4a33 50%); }
.swatch__navy { background: linear-gradient(135deg, #262c34 50%, #6b4a33 50%); }
.swatch__titanium { background: linear-gradient(135deg, #6b6c6e 50%, #6b4a33 50%); }
@media (max-width: 640px) { .buy__swatches { flex-wrap: wrap; } }

.buy__includes { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 10px 18px; margin-top: 28px; padding-top: 22px; border-top: 1px solid var(--line); }
.buy__includes li { display: flex; align-items: baseline; gap: 10px; font-size: 14px; color: var(--muted); min-width: 0; }
.buy__includes li span { min-width: 0; }
.buy__includes strong { font-size: 18px; font-weight: 700; letter-spacing: -0.02em; color: var(--text); min-width: 66px; white-space: nowrap; flex-shrink: 0; }

.buy__price {
  margin-top: 26px; padding: 18px 18px 18px 22px; border-radius: 18px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.buy__price-text { display: flex; flex-direction: column; }
.buy__amount { font-size: 30px; font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; }
.buy__note { font-size: 13px; color: var(--muted); margin-top: 4px; }

@media (max-width: 900px) {
  .buy__grid { grid-template-columns: minmax(0, 1fr); }
  .buy__gallery { position: static; }
  .buy__includes { grid-template-columns: 1fr; }
}

/* ---------- Cards / media ---------- */
.card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.section--alt .card { background: var(--bg); }
.card img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }   /* photos and scene renders are 16:9, so nothing is cut */
.card--tall { background: #fff; }
.card--tall img { aspect-ratio: auto; height: auto; flex: 1 1 0; min-height: 0; object-fit: contain; object-position: 50% 50%; background: #fff; padding: 4% 4%; box-sizing: border-box; }
.card--tall figcaption { text-align: center; background: var(--bg); }
.card figcaption { padding: 18px 22px 22px; font-size: 15px; color: var(--muted); line-height: 1.45; }
.card figcaption strong { display: block; color: var(--text); font-weight: 600; margin-bottom: 4px; }

/* Spot card: a render with one highlighted part — thin outline, scan beam, pulse rings and a label */
.spot { position: relative; overflow: hidden; }
.spot__fx { position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.spot__beam { transform-box: view-box; animation: spotbeam 3.4s ease-in-out infinite alternate; filter: blur(3px); }
@keyframes spotbeam { from { transform: rotate(-7deg); } to { transform: rotate(7deg); } }
.spot__ring { fill: none; stroke: #8fe3d6; stroke-width: 3; opacity: 0; transform-box: fill-box; transform-origin: center; animation: lidarring 3.2s cubic-bezier(.2,.5,.3,1) infinite; filter: drop-shadow(0 0 4px rgba(143,227,214,.8)); }
.spot__ring--2 { animation-delay: 1.6s; }
.spot__core { fill: #c9fff6; filter: drop-shadow(0 0 8px #8fe3d6); }
.spot__tag {
  position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -100%);
  padding: 6px 11px 6px 9px; border-radius: 999px; font-size: 12.5px; font-weight: 600; letter-spacing: .01em; white-space: nowrap;
  color: #0f3d38; background: rgba(255,255,255,.88); border: 1px solid rgba(143,227,214,.9); box-shadow: 0 4px 14px rgba(0,0,0,.14);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.spot__tag::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #3fcdb9; margin-right: 7px; vertical-align: 1px; box-shadow: 0 0 6px #8fe3d6; }
.spot__tag::after { content: ""; position: absolute; left: 50%; top: 100%; width: 1.5px; height: 22px; background: rgba(63,205,185,.9); }
.split .card img { height: auto; }     /* the overlay is placed in image percentages, so the render must not be cropped */
@media (max-width: 700px) { .spot__tag { font-size: 11.5px; padding: 5px 9px 5px 8px; } .spot__tag::after { height: 16px; } }
@media (prefers-reduced-motion: reduce) { .spot__beam { animation: none; } .spot__ring { animation: none; opacity: .5; transform: scale(1.4); } .spot__ring--2 { display: none; } }

/* LiDAR card: the overhead render with a thin animated scan drawn on top */
.lidar { position: relative; overflow: hidden; }
.lidar__fx { position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.lidar__ring { fill: none; stroke: #8fe3d6; stroke-width: 2.5; opacity: 0; transform-box: fill-box; transform-origin: center; animation: lidarring 4.2s cubic-bezier(.2,.5,.3,1) infinite; filter: drop-shadow(0 0 4px rgba(143,227,214,.8)); }
.lidar__ring--2 { animation-delay: 1.4s; }
.lidar__ring--3 { animation-delay: 2.8s; }
.lidar__ring--s { stroke-width: 2; animation-duration: 3.2s; }
.lidar__ring--s.lidar__ring--2 { animation-delay: 1.6s; }
@keyframes lidarring { 0% { transform: scale(.18); opacity: .95; } 70% { opacity: .35; } 100% { transform: scale(2.6); opacity: 0; } }
.lidar__sweep { opacity: .9; animation: lidarsweep 5s linear infinite; filter: blur(4px); }
@keyframes lidarsweep { to { transform: rotate(360deg); } }
.lidar__glow { animation: lidarglow 2.5s ease-in-out infinite; }
@keyframes lidarglow { 50% { opacity: .45; } }
.lidar__core { fill: #c9fff6; filter: drop-shadow(0 0 6px #8fe3d6); }
@media (prefers-reduced-motion: reduce) {
  .lidar__ring { animation: none; opacity: .5; transform: scale(1.4); }
  .lidar__ring--2 { transform: scale(2); opacity: .3; } .lidar__ring--3 { display: none; }
  .lidar__sweep, .lidar__glow { animation: none; }
}

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr; } }

.stat-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  border-top: 1px solid var(--line); padding-top: 28px;
}
.stat__num { display: block; font-size: clamp(30px, 3.4vw, 44px); font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.stat__label { display: block; margin-top: 10px; font-size: 14px; color: var(--muted); }
@media (max-width: 640px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Fold demo ---------- */
.fold-demo { position: relative; }
.fold-stage {
  position: relative; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 16 / 9; background: #ffffff; box-shadow: var(--shadow);
  border: 1px solid var(--line);
}
.fold-img {
  position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transition: opacity .7s cubic-bezier(.4,0,.2,1);
}
.fold-img.is-active { opacity: 1; }

.fold-controls {
  position: absolute; left: 22px; right: 22px; bottom: 22px;
  display: flex; align-items: flex-end; justify-content: space-between; gap: 12px;
  pointer-events: none;
}
.fold-controls > * { pointer-events: auto; }

.fold-readout {
  display: flex; align-items: flex-end; gap: 16px;
  padding: 16px 18px; border-radius: var(--radius-s);
  color: var(--text);
}
.fold-bar {
  width: 10px; height: 88px; border-radius: 999px; background: var(--line); position: relative; overflow: hidden;
}
.fold-bar__fill {
  position: absolute; left: 0; right: 0; bottom: 0; height: 100%;
  background: var(--accent); border-radius: 999px;
  transition: height .8s cubic-bezier(.4,0,.2,1);
}
.fold-demo.is-folded .fold-bar__fill { height: 58%; }
.fold-readout__label { display: block; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.fold-readout__value { display: block; font-size: 28px; font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; font-variant-numeric: tabular-nums; }

.segmented {
  display: inline-flex; padding: 4px; border-radius: 999px; gap: 2px;
}
.segmented button {
  border: 0; background: transparent; padding: 9px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 500; cursor: pointer; color: var(--muted);
  transition: background-color .25s ease, color .25s ease;
}
.segmented button[aria-pressed="true"] { background: var(--text); color: var(--bg); }

@media (max-width: 640px) {
  .fold-stage { aspect-ratio: 4 / 3; border-radius: 20px; }
  .fold-controls { position: static; margin-top: 12px; align-items: center; }
  .fold-readout { padding: 10px 14px; gap: 12px; align-items: center; }
  .fold-bar { height: 44px; width: 8px; }
  .fold-readout__value { font-size: 20px; }
  .fold-readout__label { font-size: 11px; }
  .segmented button { padding: 8px 12px; font-size: 13px; }
}

/* ---------- Design section ---------- */
.design-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 18px; align-items: stretch; }
.design-side { display: flex; flex-direction: column; gap: 18px; }
.design-side .card img { aspect-ratio: 16 / 9; }
.material-list { border-radius: var(--radius); padding: 10px 26px; flex: 1; display: flex; flex-direction: column; justify-content: center; }
.material-list li { padding: 16px 0; border-bottom: 1px solid var(--line); }
.material-list li:last-child { border-bottom: 0; }
.material-list span { display: block; font-weight: 600; font-size: 16px; }
.material-list small { display: block; margin-top: 3px; font-size: 14px; color: var(--muted); line-height: 1.4; }
@media (max-width: 900px) {
  .design-grid { grid-template-columns: minmax(0, 1fr); }
  .card--tall img { aspect-ratio: 4 / 3; flex: none; padding: 3% 4%; }
}

/* ---------- Voice section ---------- */
.voice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 72px); align-items: center; }
@media (max-width: 900px) { .voice-grid { grid-template-columns: 1fr; } }

.chat {
  border-radius: var(--radius); padding: 22px; display: flex; flex-direction: column; gap: 10px;
}
.chat__head {
  display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted);
  padding-bottom: 14px; margin-bottom: 6px; border-bottom: 1px solid var(--line);
}
.chat__dot { width: 8px; height: 8px; border-radius: 50%; background: #4cd964; box-shadow: 0 0 0 4px rgba(76,217,100,.18); }
.wave { margin-left: auto; display: inline-flex; gap: 3px; align-items: center; height: 16px; }
.wave i { display: block; width: 3px; height: 6px; border-radius: 2px; background: var(--accent); animation: wave 1.1s ease-in-out infinite; }
.wave i:nth-child(2) { animation-delay: .15s; }
.wave i:nth-child(3) { animation-delay: .3s; }
.wave i:nth-child(4) { animation-delay: .45s; }
.wave i:nth-child(5) { animation-delay: .6s; }
@keyframes wave { 0%, 100% { height: 5px; } 50% { height: 16px; } }

.bubble {
  max-width: 82%; padding: 12px 16px; border-radius: 20px; font-size: 16px; line-height: 1.4;
  opacity: 0; transform: translateY(10px);
  transition: opacity .5s ease var(--d, 0s), transform .5s ease var(--d, 0s);
}
.chat.play .bubble { opacity: 1; transform: none; }
.bubble--user { align-self: flex-end; background: var(--bubble-user-bg); color: var(--bubble-user-ink); border-bottom-right-radius: 6px; }
.bubble--bot  { align-self: flex-start; background: var(--bubble-bot-bg); color: var(--bubble-bot-ink); border-bottom-left-radius: 6px; }

.feature-list { display: grid; gap: 26px; }
.feature h3 { font-size: 20px; font-weight: 600; letter-spacing: -0.015em; margin-bottom: 6px; }
.feature p { color: var(--muted); font-size: 16px; }

/* ---------- Plan rooms, halo and the app card (used by the demo) ---------- */
.navmap { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: clamp(16px, 2.2vw, 32px); align-items: start; }

.navmap__room {
  fill: rgba(255, 255, 255, 0); stroke: rgba(255, 255, 255, 0); stroke-width: 3;
  cursor: pointer; transition: fill .3s ease, stroke .3s ease;
}
.navmap__room:hover { fill: rgba(255, 255, 255, .18); }
.navmap__room.is-active {
  fill: rgba(255, 255, 255, .38); stroke: rgba(255, 255, 255, .85);
  filter: drop-shadow(0 0 14px rgba(255, 255, 255, .95)) drop-shadow(0 0 30px rgba(255, 255, 255, .6));
  animation: roomglow 2s ease-in-out infinite;
}
@keyframes roomglow { 50% { fill: rgba(255, 255, 255, .24); } }
@keyframes dash { to { stroke-dashoffset: -28; } }

/* Destination halo: three particle rings, brightest inside, radiating outward (yellow-white) */
.halo { opacity: 0; transition: opacity .4s ease; }
.halo.is-on { opacity: 1; }
.halo__ring {
  fill: none; stroke-linecap: round; transform-box: fill-box; transform-origin: center;
  stroke-dasharray: 1.5 7; filter: drop-shadow(0 0 5px #ffd36b) drop-shadow(0 0 10px #ffc24d);
}
.halo__ring--1 { stroke: #fffbe8; stroke-width: 3.5; }
.halo__ring--2 { stroke: #ffefb8; stroke-width: 3; }
.halo__ring--3 { stroke: #ffd98a; stroke-width: 2.5; }
.halo.is-on .halo__ring { animation: haloburst 2.4s ease-out infinite; }
.halo.is-on .halo__ring--2 { animation-delay: .5s; }
.halo.is-on .halo__ring--3 { animation-delay: 1s; }
@keyframes haloburst {
  0%   { transform: scale(.25); opacity: 1; }
  70%  { opacity: .55; }
  100% { transform: scale(1.6); opacity: 0; }
}

.navmap__legend {
  position: absolute; right: 2%; bottom: 3%; z-index: 2; padding: 12px 14px; border-radius: 14px;
  display: flex; flex-direction: column; gap: 8px; font-size: 12px; color: var(--text);
}

.phone {
  position: relative; height: var(--map-h, 640px); aspect-ratio: 1319 / 2718; flex: none;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,.18));
}
:root[data-theme="dark"] .phone__screen { background: #121213; }

.navmap__tele { display: grid; grid-template-columns: 1.25fr 1fr 1.15fr; gap: 6px; }
.tele { padding: 7px 8px; border-radius: 11px; background: var(--bg-alt); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.tele__label { font-size: 9px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.tele__value { display: flex; align-items: center; gap: 5px; font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; line-height: 1.2; }
.tele small { font-size: 9.5px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.batt { position: relative; display: inline-block; width: 19px; height: 10px; border: 1.5px solid var(--text); border-radius: 3px; flex: none; }
.batt::before { content: ""; position: absolute; left: 1px; top: 1px; bottom: 1px; width: calc(var(--lvl, 50%) - 2px); background: #4cd964; border-radius: 1.5px; transition: width .4s ease, background-color .3s ease; }
.batt::after { content: ""; position: absolute; right: -4px; top: 2px; width: 2px; height: 4px; background: var(--text); border-radius: 0 1px 1px 0; }
.batt.is-low::before { background: #ff9f0a; }
.batt.is-charging::before { background: #4cd964; animation: charge 1.2s ease-in-out infinite; }
@keyframes charge { 50% { opacity: .45; } }
.navmap__log { display: flex; flex-direction: column; gap: 6px; flex: 1; min-height: 48px; overflow-y: auto; padding: 2px 0; scrollbar-width: none; }
.navmap__log::-webkit-scrollbar { display: none; }
.msg { max-width: 90%; padding: 7px 10px; border-radius: 13px; font-size: 12px; line-height: 1.35; }
.msg--bot { align-self: flex-start; background: var(--bg-alt); border: 1px solid var(--line); color: var(--text); border-bottom-left-radius: 5px; }
.msg--user { align-self: flex-end; background: var(--bubble-user-bg); color: var(--bubble-user-ink); border-bottom-right-radius: 5px; }
.msg--typing { color: var(--muted); }
.msg--typing i { display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: currentColor; margin-right: 3px; animation: wave 1s ease-in-out infinite; }
.msg--typing i:nth-child(2) { animation-delay: .15s; }
.msg--typing i:nth-child(3) { animation-delay: .3s; }

.navmap__chips { display: flex; flex-wrap: wrap; gap: 5px; }
.navmap__chips button {
  height: 26px; padding: 0 10px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg-alt);
  color: var(--text); font: inherit; font-size: 11px; font-weight: 500; cursor: pointer; white-space: nowrap;
  transition: background-color .2s ease, border-color .2s ease;
}
.navmap__chips button:hover { border-color: var(--text); }
.navmap__chips button:first-child { background: var(--text); color: var(--bg); border-color: var(--text); }

.navmap__ask { display: flex; gap: 6px; }
.navmap__ask input {
  flex: 1; min-width: 0; height: 34px; padding: 0 12px; border-radius: 999px; font: inherit; font-size: 12px;
  border: 1px solid var(--line); background: var(--bg-alt); color: var(--text); outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.navmap__ask input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(154,101,68,.15); }
.navmap__ask input::placeholder { color: var(--muted-2); }
.navmap__ask button {
  width: 34px; height: 34px; border-radius: 999px; border: 0; flex: none; cursor: pointer;
  background: var(--text); color: var(--bg); display: inline-flex; align-items: center; justify-content: center;
}
.navmap__ask .navmap__mic { background: var(--bg-alt); color: var(--text); border: 1px solid var(--line); transition: background-color .2s ease, color .2s ease; }
.navmap__ask .navmap__mic:hover { border-color: var(--text); }
.navmap__ask .navmap__mic[aria-pressed="true"] { background: #ff3b30; color: #fff; border-color: #ff3b30; animation: micpulse 1.2s ease-in-out infinite; }
@keyframes micpulse { 50% { box-shadow: 0 0 0 7px rgba(255,59,48,.22); } }

@media (max-width: 1100px) {
  .navmap__tele { grid-template-columns: 1fr; gap: 4px; }
  .tele { flex-direction: row; align-items: center; gap: 8px; padding: 5px 8px; }
  .tele__label { min-width: 48px; }
  .tele small { display: none; }
  .lab__tele { gap: 0; }
  .lab__tele .tele { border-left: 0; border-top: 1px solid var(--line); padding: 8px 12px; }
  .lab__tele .tele:first-child { border-top: 0; }
}
@media (max-width: 820px) {
  .navmap__tele { grid-template-columns: 1.25fr 1fr 1.15fr; }
  .tele { flex-direction: column; align-items: stretch; }
  .tele small { display: block; }
  .navmap__log { min-height: 120px; }
}

/* full-width banner figure */
.banner { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--line); background: var(--bg-alt); }
.banner img { width: 100%; aspect-ratio: 21 / 9; object-fit: cover; }
.banner figcaption { padding: 18px 22px 22px; font-size: 15px; color: var(--muted); }
.banner figcaption strong { color: var(--text); font-weight: 600; margin-right: 6px; }
@media (max-width: 640px) { .banner img { aspect-ratio: 16 / 9; } }

/* ---------- Perception ---------- */
.split { display: grid; grid-template-columns: 1.15fr 1fr; gap: 18px; align-items: stretch; }
.split .card img { aspect-ratio: 16 / 9; }
.spec-list { border-radius: var(--radius); padding: 10px 26px; display: flex; flex-direction: column; justify-content: center; }
.spec-list > div { padding: 15px 0; border-bottom: 1px solid var(--line); }
.spec-list > div:last-child { border-bottom: 0; }
.spec-list dt { font-weight: 600; font-size: 16px; }
.spec-list dd { margin-top: 3px; font-size: 14px; color: var(--muted); line-height: 1.4; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

.ways { text-align: center; }
.ways__title { font-size: clamp(24px, 3vw, 32px); letter-spacing: -0.02em; font-weight: 700; margin-bottom: 26px; }
.ways__list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.way {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 26px 14px 22px; border-radius: var(--radius-s);
}
.way svg { width: 44px; height: 44px; color: var(--accent); margin-bottom: 14px; }
.way span { font-weight: 600; font-size: 16px; letter-spacing: -0.01em; }
.way small { display: block; margin-top: 4px; font-size: 13px; color: var(--muted); line-height: 1.35; }
@media (max-width: 900px) { .ways__list { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .ways__list { grid-template-columns: repeat(2, 1fr); gap: 10px; } .way { padding: 20px 10px 18px; } }

/* ---------- Specs ---------- */
.spec-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.spec { padding: 26px 24px 22px; border-radius: var(--radius-s); min-height: 150px; display: flex; flex-direction: column; justify-content: space-between; }
.spec__num { font-size: clamp(26px, 2.6vw, 36px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.05; font-variant-numeric: tabular-nums; }
.spec__label { margin-top: 18px; font-size: 14px; color: var(--muted); line-height: 1.35; }
@media (max-width: 900px) { .spec-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px) { .spec-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; } .spec { padding: 18px; min-height: 120px; } }


/* ---------- FAQ ---------- */
.faq { margin-top: 8px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; list-style: none; padding: 22px 44px 22px 0; position: relative;
  font-size: 19px; font-weight: 600; letter-spacing: -0.015em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 4px; top: 50%; width: 12px; height: 12px;
  border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: translateY(-70%) rotate(45deg); transition: transform .3s ease;
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(225deg); }
.faq p { padding: 0 0 24px; color: var(--muted); max-width: 64ch; font-size: 17px; }

/* ---------- Closing ---------- */
.closing { text-align: center; }
.closing__media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); aspect-ratio: 21 / 9; margin-bottom: clamp(40px, 6vw, 72px); }
.closing__media img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 640px) { .closing__media { aspect-ratio: 16 / 9; border-radius: 20px; } }
.closing .headline { margin-left: auto; margin-right: auto; margin-inline: auto; max-width: 20ch; }
.closing .cta-row { justify-content: center; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding-block: 36px; font-size: 13px; color: var(--muted); }
.footer__inner { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.footer__brand { font-weight: 700; letter-spacing: .22em; color: var(--text); font-size: 14px; }
.footer__by { margin-top: 6px; }
.footer__note { max-width: 44ch; }
.footer__links { display: flex; flex-wrap: wrap; gap: 4px 18px; font-weight: 500; }
.footer__links a { color: var(--muted); }
.footer__links a:hover { color: var(--text); }
@media (max-width: 720px) { .footer__inner { flex-direction: column; } }

/* ---------- Reveal on scroll ---------- */
.reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity .8s cubic-bezier(.2,.6,.2,1) var(--d, 0s), transform .8s cubic-bezier(.2,.6,.2,1) var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .bubble { opacity: 1; transform: none; transition: none; }
  .halo__ring, .navmap__room{ animation: none !important; }
  .wave i { animation: none; }
  .fold-img { transition: opacity .3s ease; }
}

/* ---------- Scroll-driven unfold sequence ---------- */
.unfold { height: 150vh; margin-top: 8px; }
.unfold__sticky { position: sticky; top: 0; height: 100vh; display: grid; place-items: center; }
.unfold__stage {
  position: relative; width: min(100%, calc((100vh - 150px) * 16 / 9)); aspect-ratio: 16 / 9; max-width: 100%;
  border-radius: var(--radius); overflow: hidden; background: #d9cdb8; box-shadow: var(--shadow); border: 1px solid var(--line);
}
.unfold__poster, .unfold__canvas { position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; width: 100%; height: 100%; display: block; object-fit: cover; }
.unfold__canvas { opacity: 0; transition: opacity .25s ease; }
.unfold.is-drawn .unfold__canvas { opacity: 1; }
.unfold__readout { position: absolute; left: 22px; bottom: 22px; }
.unfold__hint {
  position: absolute; right: 22px; bottom: 22px; display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 14px; border-radius: 999px; font-size: 13px; font-weight: 500; color: var(--text);
  transition: opacity .35s ease, transform .35s ease;
}
.unfold__hint svg { animation: hintbob 1.6s ease-in-out infinite; }
.unfold.is-scrolled .unfold__hint { opacity: 0; transform: translateY(6px); pointer-events: none; }
@keyframes hintbob { 0%, 100% { transform: translateY(-2px); } 50% { transform: translateY(3px); } }
@media (max-width: 820px) {
  .unfold { height: 135vh; }
  .unfold__stage { width: 100%; }
  .unfold__readout { left: 12px; bottom: 12px; padding: 10px 12px; gap: 10px; }
  .unfold__readout .fold-readout__value { font-size: 18px; }
  .unfold__readout .fold-bar { height: 48px; width: 8px; }
  .unfold__hint { right: 12px; bottom: 12px; }
}

/* ---------- Scroll-driven mapping (point cloud over the map demo) ----------
   #scan is a tall scroll track; the whole map demo (.navmap) sticks inside it while scan.js draws the
   point cloud on a canvas over the plan. --reveal (plan, legend, phone panel), --cloud (canvas) and
   --ui (readouts, captions) are set by scan.js from the scroll position. */
.scan { height: 370vh; margin-top: clamp(8px, 2vw, 20px); --reveal: 1; --cloud: 0; --ui: 1; --ui-steps: 1; }
.scan .navmap { position: sticky; top: calc(var(--nav-h) + 16px); }
.scan__stage { position: relative; max-width: calc((100vh - var(--nav-h) - 72px) * 1.518); margin-left: auto; margin-right: auto; margin-inline: auto; }
/* the drawing layer covers the whole demo on desktop (the app panel's column too) and just the stage on phones */
.scan__layer { position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; z-index: 3; pointer-events: none; }
.scan .navmap__plan, .scan .navmap__svg, .scan .navmap__legend { opacity: var(--reveal); }
.scan .phone { opacity: var(--reveal); transform: translateY(calc((1 - var(--reveal)) * 16px)); }
.scan__canvas { position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; width: 100%; height: 100%; display: block; opacity: var(--cloud); }
.scan__hud { position: absolute; left: 18px; top: 18px; z-index: 4; display: flex; gap: 18px; padding: 10px 16px; border-radius: 16px; opacity: var(--ui); }
.scan__hud > div { display: flex; flex-direction: column; min-width: 56px; }
.scan__hud strong { font-size: 17px; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; line-height: 1.15; }
.scan__k { font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.scan__tag { position: absolute; right: 18px; bottom: 18px; z-index: 4; display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 600; color: var(--text); opacity: var(--ui); }
.scan__tag i { width: 8px; height: 8px; border-radius: 50%; background: #ff3b30; box-shadow: 0 0 0 3px rgba(255,59,48,.2); animation: blink 1.2s ease-in-out infinite; }
.scan:not(.is-scrolled) .scan__tag { opacity: 0; }   /* the hint sits there first */
.scan.is-done .scan__tag i { background: #4cd964; box-shadow: 0 0 0 3px rgba(76,217,100,.22); animation: none; }
.scan__steps { position: absolute; left: 18px; bottom: 18px; z-index: 4; width: min(360px, calc(100% - 36px)); display: grid; align-items: end; opacity: var(--ui-steps); pointer-events: none; }
.scan__step { grid-area: 1 / 1; padding: 14px 18px; border-radius: 18px; opacity: 0; transform: translateY(8px); transition: opacity .35s ease, transform .35s ease; }
.scan__step.is-on { opacity: 1; transform: none; }
.scan__step strong { display: block; font-size: 17px; letter-spacing: -0.015em; margin-bottom: 3px; }
.scan__step span { display: block; font-size: 13.5px; color: var(--muted); line-height: 1.45; text-wrap: pretty; }
.scan__hint {
  position: absolute; right: 18px; bottom: 18px; z-index: 4; display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 500; color: var(--text); transition: opacity .35s ease, transform .35s ease;
}
.scan__hint svg { animation: hintbob 1.6s ease-in-out infinite; }
.scan.is-scrolled .scan__hint { opacity: 0; transform: translateY(6px); }
.scan__hud, .scan__tag, .scan__steps, .scan__hint { transition: opacity .3s ease; }
@media (max-width: 820px) {
  /* phones: only the stage sticks, inside its own track; the chips and the app card follow after it */
  .scan { height: auto; margin-top: 0; }
  .scan .navmap { position: static; }
  .scan__stage { position: sticky; top: calc(var(--nav-h) + 8px); max-width: none; height: min(calc(100vh - var(--nav-h) - 16px), 132vw); height: min(calc(100svh - var(--nav-h) - 16px), 132vw); overflow: hidden; }
  .scan__stage .navmap__stage { margin-left: 0; margin-right: 0; margin-inline: 0; }
  .scan__hud { left: 12px; top: 12px; gap: 12px; padding: 8px 12px; border-radius: 14px; }
  .scan__hud strong { font-size: 15px; }
  .scan__tag { left: 12px; right: auto; top: 70px; bottom: auto; font-size: 11.5px; padding: 6px 10px; gap: 7px; }
  .scan__tag i { width: 7px; height: 7px; }
  .scan__steps { left: 12px; bottom: 12px; width: calc(100% - 24px); }
  .scan__step { padding: 12px 14px; }
  .scan__step strong { font-size: 16px; }
  .scan__step span { font-size: 13px; }
  .scan__step:last-child span { display: none; }   /* the last caption sits over the small plan: title only */
  .scan__hint { display: none; }
}
@media (max-width: 700px) {
  .scan__stage { margin-left: -20px; margin-right: -20px; margin-inline: -20px; }
}

/* ---------- Lab: one plan, three ways (scan → send → drive) ---------- */
.lab__scan { height: 370vh; margin-top: clamp(8px, 2vw, 20px); --reveal: 1; --cloud: 0; --ui: 1; --ui-steps: 1; }
.lab__sticky { position: sticky; top: calc(var(--nav-h) + 16px); display: grid; grid-template-columns: minmax(0, 1fr) var(--phone-w, 340px); gap: clamp(16px, 2.2vw, 28px); align-items: center; }
.lab__track { min-width: 0; }
.lab__stage { position: relative; max-width: calc((100vh - var(--nav-h) - 72px) * 1.518); max-width: calc(var(--plan-h, calc(100vh - var(--nav-h) - 72px)) * 1.518); margin-left: auto; margin-right: auto; margin-inline: auto; }
.lab__plan { position: relative; aspect-ratio: 1791 / 1180; border-radius: var(--radius); overflow: hidden; }
.lab__svg { position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; width: 100%; height: 100%; display: block; background: #d9d2c5; opacity: var(--reveal); transition: opacity .25s ease; }
.lab__svg .outside { fill: #d9d2c5; }
.lab__svg .plan-img { image-rendering: auto; }
.lab__svg .navmap__room { pointer-events: all; }
.lab__svg.is-drive .navmap__room { pointer-events: none; }
.lab__svg .lab__route { fill: none; stroke: #fff; stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 18 14; opacity: 0; transition: opacity .3s ease; filter: drop-shadow(0 0 1.5px rgba(0,0,0,.55)) drop-shadow(0 1px 3px rgba(0,0,0,.25)); }
.lab__svg.is-driving .lab__route { opacity: .96; animation: dash 1s linear infinite; }
.lab__svg .lab__pin { cursor: pointer; opacity: 0; transition: opacity .45s ease var(--d, 0s); }
.lab__sticky.play .lab__pin { opacity: 1; }
.lab__svg .lab__pin rect { fill: rgba(255,255,255,.88); stroke: rgba(0,0,0,.08); stroke-width: 1.5; }
.lab__svg .lab__pin circle { fill: var(--accent); }
.lab__svg .lab__pin text { font: 500 24px/1 Inter, system-ui, sans-serif; fill: #1d1d1f; }
.lab__svg .lab__pin.is-active rect { fill: #1d1d1f; }
.lab__svg .lab__pin.is-active text { fill: #f5f5f7; }
.lab__svg .lab__pin.is-active circle { fill: #4cd964; }
.lab__svg .lab__pin.is-target rect { fill: #ffd98a; stroke: #e0a83a; }
.lab__svg .lab__pin.is-target circle { fill: #c4801f; }
.lab__svg .lab__dock rect { fill: #1d1d1f; }
.lab__svg .lab__dock path { fill: #4cd964; }
.lab__svg .lab__dock .dockpad__pulse { fill: none; stroke: #4cd964; stroke-width: 3; opacity: 0; }
.lab__svg .lab__dock.is-home .dockpad__pulse { animation: dockpulse 1.6s ease-out infinite; }
/* the app lives in a phone: a dark shell, a screen with a status bar and a home indicator, and the panel as the
   screen's content, scrolling inside the phone when it is taller than the screen (desktop: as tall as the plan) */
.lab__phone { position: relative; opacity: var(--reveal); transform: translateY(calc((1 - var(--reveal)) * 16px)); width: var(--phone-w, 340px); height: max(var(--plan-h, 700px), 560px); height: calc(var(--phone-w, 340px) / 0.478); padding: 10px; border-radius: calc(var(--phone-w, 340px) * 0.165); background: #1a1a1c; box-shadow: 0 24px 50px rgba(0,0,0,.28), inset 0 0 0 1.5px #4a4a4e, inset 0 0 0 3px #101011; }
/* side keys: action + volume on the left, power on the right (decorative) */
.lab__phone::before { content: ""; position: absolute; left: -3px; top: 17%; width: 3px; height: 10%; border-radius: 2px 0 0 2px; background: #2a2a2d; box-shadow: 0 calc(var(--phone-w, 340px) * 0.16) 0 #2a2a2d, 0 calc(var(--phone-w, 340px) * 0.30) 0 #2a2a2d; }
.lab__phone::after { content: ""; position: absolute; right: -3px; top: 24%; width: 3px; height: 13%; border-radius: 0 2px 2px 0; background: #2a2a2d; }
.lab__phone-screen { height: 100%; display: flex; flex-direction: column; border-radius: calc(var(--phone-w, 340px) * 0.165 - 10px); background: var(--app-bg); overflow: hidden; }
.lab__phone-bar { position: relative; flex: none; height: 48px; display: flex; align-items: center; justify-content: space-between; padding: 10px 24px 0; font-size: 14px; font-weight: 600; letter-spacing: -0.01em; }
.lab__phone-island { position: absolute; left: 50%; top: 11px; width: 88px; height: 26px; margin-left: -44px; border-radius: 999px; background: #0b0b0c; }
.lab__phone-status { display: inline-flex; align-items: center; gap: 2px; }
.lab__phone-status i { align-self: flex-end; margin-bottom: 1px; }
.lab__phone-status i + i { margin-left: 1.5px; }
.lab__phone-wifi { width: 17px; height: 17px; margin-left: 5px; }
.lab__phone-status i { width: 3px; border-radius: 1px; background: var(--text); }
.lab__phone-status i:nth-child(1) { height: 5px; } .lab__phone-status i:nth-child(2) { height: 7px; } .lab__phone-status i:nth-child(3) { height: 9px; } .lab__phone-status i:nth-child(4) { height: 11px; }
.lab__phone-status b { position: relative; width: 25px; height: 12px; margin-left: 6px; border-radius: 4px; border: 1.5px solid rgba(127,127,127,.55); box-shadow: inset 0 0 0 1.5px var(--app-bg), inset 0 0 0 20px var(--text); }
.lab__phone-status b::after { content: ""; position: absolute; right: -4.5px; top: 2.5px; width: 2px; height: 4px; border-radius: 0 2px 2px 0; background: rgba(127,127,127,.55); }
.lab__phone-home { flex: none; height: 22px; position: relative; }
/* app header: icon, wordmark + live status, bell */
.lab__app-head { display: flex; align-items: center; gap: 10px; padding: 2px 2px 0; }
.lab__app-icon { flex: none; width: 36px; height: 36px; border-radius: 11px; background: linear-gradient(160deg, #b5805a, #7d5034); color: #fff; display: inline-flex; align-items: center; justify-content: center; box-shadow: inset 0 1px 0 rgba(255,255,255,.25); }
.lab__app-icon svg { width: 22px; height: 22px; }
.lab__app-title { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.lab__app-title b { font-size: 15px; font-weight: 700; letter-spacing: .06em; line-height: 1.15; }
.lab__app-title .lab__status { min-height: 0; font-size: 12px; }
.lab__app-title .lab__status .drive__dot { width: 7px; height: 7px; }
.lab__app-title #lab-status-text { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lab__phone-home::after { content: ""; position: absolute; left: 50%; bottom: 7px; width: 120px; height: 5px; margin-left: -60px; border-radius: 999px; background: var(--text); opacity: .85; }
.lab__panel { flex: 1 1 auto; min-height: 0; overflow-y: auto; overscroll-behavior: contain; display: flex; flex-direction: column; gap: 10px; padding: 6px 14px 12px; background: var(--app-bg); scrollbar-width: none; }   /* iOS: no visible scrollbar; v42: rows are fixed and the conversation absorbs the rest, so nothing scrolls on desktop */
.lab__panel::-webkit-scrollbar { display: none; }
.lab__modes { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; padding: 2px; border-radius: 11px; background: var(--seg); }
.lab__mode { height: 34px; border: 0; border-radius: 9px; background: transparent; font: inherit; font-size: 13.5px; font-weight: 600; color: var(--muted); cursor: pointer; transition: background .2s ease, color .2s ease, box-shadow .2s ease; }
.lab__mode.is-active { background: var(--seg-on); color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,.10), 0 3px 8px rgba(0,0,0,.08); }
/* v40 — nudge towards "Drive it": the idle tab keeps a faint fill so it reads as a switch, and once the map is
   ready the joystick tab breathes with a walnut ring + a dot badge until the visitor has tried it once (.is-driven). */
.lab__mode:not(.is-active):hover { color: var(--text); }
.lab__scan.is-done:not(.is-driven) .lab__mode[data-mode="drive"]:not(.is-active) { position: relative; color: var(--accent); background: rgba(154, 101, 68, .12); animation: lab-nudge 2.4s ease-out infinite; }
.lab__scan.is-done:not(.is-driven) .lab__mode[data-mode="drive"]:not(.is-active)::after { content: ""; position: absolute; top: 4px; right: 6px; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 2px var(--app-bg); animation: lab-nudge-dot 2.4s ease-in-out infinite; }
@keyframes lab-nudge { 0% { box-shadow: 0 0 0 0 rgba(154, 101, 68, .5); } 55% { box-shadow: 0 0 0 9px rgba(154, 101, 68, 0); } 100% { box-shadow: 0 0 0 0 rgba(154, 101, 68, 0); } }
@keyframes lab-nudge-dot { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.45); opacity: .55; } }
@media (prefers-reduced-motion: reduce) { .lab__scan.is-done:not(.is-driven) .lab__mode[data-mode="drive"]:not(.is-active), .lab__scan.is-done:not(.is-driven) .lab__mode[data-mode="drive"]:not(.is-active)::after { animation: none; } }
.lab__send { display: flex; flex-direction: column; gap: 10px; flex: 1 1 auto; min-height: 0; }
.lab__rooms-list { display: flex; flex-wrap: wrap; gap: 8px; }
.lab__rooms-list button {
  height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid transparent; background: var(--app-cell);
  font: inherit; font-size: 14px; font-weight: 500; color: var(--text); cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.lab__rooms-list button::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.lab__rooms-list button.is-active { background: var(--text); color: var(--bg); border-color: var(--text); }
.lab__rooms-list button.is-active::before { background: #4cd964; }
/* the app card inside the panel (Send it): telemetry, conversation, quick commands, input, rooms */
.lab__tele { gap: 0; background: var(--app-cell); border-radius: 16px; box-shadow: 0 1px 2px rgba(0,0,0,.04); overflow: hidden; }
.lab__tele .tele { padding: 8px 10px; border-radius: 0; border: 0; border-left: 1px solid var(--line); background: transparent; }
.lab__tele .tele:first-child { border-left: 0; }
.lab__tele .tele__label { font-size: 9.5px; }
.lab__tele .tele__value { font-size: 14px; }
.lab__tele .tele small { font-size: 10px; letter-spacing: -0.01em; }
.lab__log { flex: 1 1 auto; min-height: 56px; max-height: none; gap: 6px; padding: 2px 0; }
.lab__log .msg { font-size: 13px; padding: 8px 12px; border-radius: 16px; max-width: 88%; }
.lab__log .msg--bot { background: var(--app-cell); border: 0; box-shadow: 0 1px 2px rgba(0,0,0,.04); border-bottom-left-radius: 6px; }
.lab__log .msg--user { background: var(--accent); color: #fff; border-bottom-right-radius: 6px; }
:root[data-theme="dark"] .lab__log .msg--user { color: #1d1d1f; }
/* quick commands: one row that scrolls sideways, bleeding to the screen edges (iOS suggestion chips) */
.lab__chips { flex: none; flex-wrap: nowrap; gap: 6px; overflow-x: auto; scrollbar-width: none; margin: 0 -14px; padding: 0 14px; -webkit-overflow-scrolling: touch; }
.lab__chips::-webkit-scrollbar { display: none; }
.lab__chips button { flex: none; height: 30px; padding: 0 11px; font-size: 12.5px; border-color: transparent; background: var(--app-cell); box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.lab__chips button:hover { border-color: var(--text); }
.lab__ask { flex: none; gap: 8px; }
.lab__ask input { height: 40px; font-size: 13.5px; border-color: transparent; background: var(--app-cell); box-shadow: 0 1px 2px rgba(0,0,0,.04); padding: 0 14px; }
.lab__ask button { width: 40px; height: 40px; }
.lab__ask .navmap__mic { background: var(--app-cell); border-color: transparent; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.lab__ask button[type="submit"] { background: var(--accent); color: #fff; }
:root[data-theme="dark"] .lab__ask button[type="submit"] { color: #1d1d1f; }
.lab__drive .drive__hud { gap: 8px; }
.lab__drive .drive__stat { background: var(--app-cell); border: 0; box-shadow: 0 1px 2px rgba(0,0,0,.04); border-radius: 14px; padding: 7px 10px; }
.lab__drive .drive__stat strong { font-size: 16px; }
/* the pad shrinks with the phone so Manual mode also fits one screen: panel height − the fixed rows (≈ 474 px incl. bezel/bar) */
.lab__drive .joy { --joy: clamp(116px, calc(var(--phone-w, 340px) / 0.478 - 474px), 172px); width: var(--joy); height: var(--joy); }
.lab__drive .joy__cross::before { height: calc(var(--joy) * 0.58); } .lab__drive .joy__cross::after { width: calc(var(--joy) * 0.58); }
.lab__drive .joy__ring { top: calc(var(--joy) * 0.1); right: calc(var(--joy) * 0.1); bottom: calc(var(--joy) * 0.1); left: calc(var(--joy) * 0.1); inset: calc(var(--joy) * 0.1); }
.lab__drive .joy__knob { width: calc(var(--joy) * 0.43); height: calc(var(--joy) * 0.43); margin: calc(var(--joy) * -0.215) 0 0 calc(var(--joy) * -0.215); }
.lab__drive .drive__keys { font-size: 11.5px; line-height: 1.45; }
.lab__drive .drive__reset { height: 36px; }
.lab__drive .switch { background: var(--app-cell); border-radius: 14px; padding: 8px 12px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
@media (min-width: 821px) and (max-width: 1150px), (min-width: 821px) and (max-height: 760px) { .lab__panel .drive__keys { display: none; } .lab__drive { gap: 8px; } .lab__drive .switch { padding: 6px 12px; } }
.lab__drive .drive__reset { align-self: stretch; background: var(--app-cell); border-color: transparent; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
.lab__rooms-list { flex: none; gap: 6px; }
.lab__rooms-list button { height: 30px; padding: 0 11px; font-size: 12.5px; gap: 6px; }
.lab__rooms-list button::before { width: 6px; height: 6px; }
.lab__scan.is-listening .lab__ask input { border-color: #ff3b30; }
.lab__scan.is-noassist .lab__plan { box-shadow: 0 0 0 2px rgba(255,90,95,.4); }
.lab__modes--float { display: none; position: absolute; right: 10px; top: 10px; z-index: 4; width: auto; grid-template-columns: auto auto; border-radius: 999px; opacity: 0; pointer-events: none; transition: opacity .3s ease; }
.lab__scan.is-done .lab__modes--float, .lab__scan.is-done .lab__mini { opacity: 1; pointer-events: auto; }
.lab__modes--float { padding: 3px; border-radius: 999px; }
.lab__modes--float .lab__mode { height: 30px; padding: 0 12px; font-size: 13px; border-radius: 999px; }
.lab__mini { display: none; position: absolute; left: 10px; top: 10px; z-index: 4; padding: 8px 12px; border-radius: 14px; max-width: 55%; opacity: 0; pointer-events: none; transition: opacity .3s ease; }
.lab__mini b { display: block; font-size: 15px; letter-spacing: -0.01em; }
.lab__mini span { display: block; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.lab__mini em { display: block; font-style: normal; font-size: 11.5px; color: var(--muted); margin-top: 2px; line-height: 1.3; }
.lab__drive { display: flex; flex-direction: column; gap: 10px; }
.lab__send[hidden], .lab__drive[hidden] { display: none !important; }
.lab__stage.is-bump { animation: drivebump .36s ease-out; }
.lab__drive .joy { margin: 2px auto 0; }
.lab__svg .label { font: 500 26px/1 Inter, system-ui, sans-serif; }
@media (max-width: 820px) {
  /* phones: the whole pair (stage above, app below) is pinned inside a tall track, and never taller than the
     screen — the app scrolls inside its card, so the plan stays in view while you tap rooms or drive */
  .lab__scan { height: 300vh; margin-top: 0; }
  .lab__sticky { position: sticky; top: calc(var(--nav-h) + 8px); display: flex; flex-direction: column; align-items: stretch; gap: 10px; max-height: calc(100vh - var(--nav-h) - 16px); max-height: calc(100svh - var(--nav-h) - 16px); }
  .lab__track { width: 100%; }
  .lab__track { height: auto; flex: none; }
  .lab__stage { position: relative; top: auto; max-width: none; height: min(calc(100vh - var(--nav-h) - 28px), 132vw); height: min(calc(100svh - var(--nav-h) - 28px), 132vw); overflow: hidden; }
  .lab__plan { border-radius: 0; }
  .lab__phone { flex: 1 1 auto; min-height: 0; width: auto; height: auto; padding: 0; border-radius: var(--radius); background: var(--app-bg); border: 1px solid var(--line); box-shadow: var(--shadow); transform: none; display: flex; flex-direction: column; }
  .lab__phone::before, .lab__phone::after { display: none; }
  .lab__phone-screen { border-radius: var(--radius); flex: 1 1 auto; min-height: 0; height: auto; }
  .lab__phone-bar, .lab__phone-home { display: none; }
  .lab__panel { padding: 10px 14px 12px; gap: 10px; }
  .lab__log { min-height: 110px; max-height: 150px; }
  .lab__drive .joy { --joy: 196px; }
  .lab__app-head { gap: 8px; }
  .lab__app-icon { width: 30px; height: 30px; border-radius: 9px; }
  .lab__app-icon svg { width: 18px; height: 18px; }
  .lab__app-title b { font-size: 13.5px; }
  .lab__svg .lab__pin text { display: none; }
  .lab__svg .lab__pin rect { display: none; }
  .lab__svg .lab__pin circle { r: 40; stroke: rgba(255,255,255,.92); stroke-width: 14; paint-order: stroke; }
  .lab__stage.is-drive .lab__mini { display: block; }
  /* while the camera zooms in onto the chair, the pad and the mini HUD wait, then fade in */
  .lab__stage .joy { transition: opacity .35s ease; }
  .lab__stage.is-zooming .joy, .lab__stage.is-zooming .lab__mini { opacity: 0 !important; }
  .lab__svg .lab__pin.is-active circle { stroke: #1d1d1f; }
  .lab__panel .drive__keys { display: none; }
  .lab__drive { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 8px; align-items: stretch; }
  .lab__drive .drive__hud { display: contents; }
  .lab__drive .switch { grid-column: 1 / 4; }
  .lab__drive .drive__reset { grid-column: 4 / -1; }
  .lab__drive > .joy { grid-column: 1 / -1; }   /* fallback only: JS moves the pad into the stage on phones */
  .lab__stage.is-drive .lab__plan { aspect-ratio: 4 / 5; }   /* the chase view needs a tall window on phones */
}
@media (max-width: 700px) {
  .lab__stage { margin-left: -20px; margin-right: -20px; margin-inline: -20px; }
}

/* ---------- Joystick demo ---------- */
.drive { margin-top: clamp(56px, 8vw, 96px); }
@keyframes drivebump {
  0% { transform: translate(0, 0); } 20% { transform: translate(-6px, 2px); } 40% { transform: translate(5px, -2px); }
  60% { transform: translate(-3px, 1px); } 80% { transform: translate(2px, 0); } 100% { transform: translate(0, 0); }
}
.drive__flash { position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; pointer-events: none; background: rgba(255,90,95,.28); opacity: 0; }
.drive__flash.is-on { animation: driveflash .5s ease-out; }
@keyframes driveflash { 0% { opacity: 1; } 100% { opacity: 0; } }
.drive__svg { display: block; width: 100%; height: 100%; touch-action: pan-y; }
.drive__svg .outside { fill: #d9d2c5; }
.drive__svg .mini { pointer-events: none; filter: drop-shadow(0 6px 10px rgba(0,0,0,.22)); }
.drive__svg .mini__frame { fill: rgba(255,255,255,.7); stroke: rgba(255,255,255,.9); stroke-width: 14; }
.drive__svg .mini use { opacity: .92; }
.drive__svg .mini__goal { fill: #ffd98a; stroke: #fff; stroke-width: 10; }
.drive__svg .mini__dot { fill: #1d1d1f; stroke: #fff; stroke-width: 8; }
.drive__svg .mini__nose { fill: #1d1d1f; }
.drive__svg .floor { fill: #e9e2d6; }
.drive__svg .floor--living { fill: url(#dplanks); }
.drive__svg .floor--bed { fill: url(#dplanks2); }
.drive__svg .floor--kitchen { fill: url(#dtiles); }
.drive__svg .floor--hall { fill: #e3dcd0; }
.drive__svg .rug { fill: rgba(190,170,140,.22); stroke: rgba(150,130,100,.25); stroke-width: 2; stroke-dasharray: 2 8; stroke-linecap: round; }
.drive__svg .walls { filter: drop-shadow(2px 3px 3px rgba(0,0,0,.22)); }
.drive__svg .wall { fill: #33302c; }
.drive__svg .door { fill: none; stroke: rgba(29,29,31,.22); stroke-width: 2; stroke-dasharray: 5 6; }
.drive__svg .door-leaf { stroke: rgba(29,29,31,.42); stroke-width: 4; stroke-dasharray: none; stroke-linecap: round; }
.drive__svg .furniture { filter: drop-shadow(0 3px 2px rgba(0,0,0,.10)); }
.drive__svg .wood { fill: #b28c67; stroke: #93704f; stroke-width: 2; }
.drive__svg .wood-dk { fill: #8f6b4b; }
.drive__svg .soft { fill: #f5f1ea; stroke: #d9d0c1; stroke-width: 2; }
.drive__svg .soft-dk { fill: #e7e0d3; }
.drive__svg .seam { fill: none; stroke: #ddd4c5; stroke-width: 2; }
.drive__svg .pillow { fill: #fff; stroke: #d9d0c1; stroke-width: 2; }
.drive__svg .duvet { fill: #dfe7ec; stroke: #c2ced7; stroke-width: 2; }
.drive__svg .grey { fill: #d5cec2; stroke: #bbb2a1; stroke-width: 2; }
.drive__svg .grey-dk { fill: #c1b8a8; stroke: #a89e8c; stroke-width: 2; }
.drive__svg .paper { fill: #fbf9f4; stroke: #d9d0c1; stroke-width: 1.5; }
.drive__svg .sink { fill: #eef0f2; stroke: #b3b9bf; stroke-width: 2; }
.drive__svg .ink { fill: #2a2a2c; }
.drive__svg .hob { fill: #3a3a3c; }
.drive__svg .hob-ring { fill: none; stroke: #9a9a9e; stroke-width: 1.5; }
.drive__svg .stool { fill: #a6764f; stroke: #85593a; stroke-width: 2; }
.drive__svg .pot { fill: #b98a65; }
.drive__svg .leaf { fill: #86b573; }
.drive__svg .leaf-dk { fill: #629553; }
.drive__svg .lamp { fill: #ffd98a; filter: drop-shadow(0 0 8px #ffe08f); }
.drive__svg .label { font: 500 22px/1 Inter, system-ui, sans-serif; fill: #7a7267; letter-spacing: .02em; transition: fill .3s ease; }
.drive__svg .label.is-on { fill: #c4801f; font-weight: 600; }
.drive__svg .dockpad { fill: rgba(98,210,111,0); stroke: rgba(29,29,31,.2); stroke-width: 2; stroke-dasharray: 6 6; transition: fill .3s ease, stroke .3s ease; }
.drive__svg .dockpad.is-home { fill: rgba(98,210,111,.14); stroke: #62d26f; stroke-dasharray: none; }
.drive__svg .dock { fill: #1d1d1f; }
.drive__svg .dock-bolt { fill: #62d26f; }
.drive__svg .dock-bolt.is-home { filter: drop-shadow(0 0 6px #62d26f); }
.drive__svg .scan { fill: url(#dscan); stroke: rgba(29,29,31,.10); stroke-width: 1; stroke-linejoin: round; }
.drive__svg .scan.is-near { fill: url(#dscanhot); stroke: rgba(255,159,67,.45); }
.drive__svg .scan--rear { opacity: .55; }
.drive__svg .dot { fill: rgba(29,29,31,.28); }
.drive__svg .dot.is-near { fill: #ff9f43; r: 4; }
.drive__svg .trail__dot { fill: #9a6544; }
.drive__svg .brake__ring { fill: none; stroke: #ff5a5f; stroke-width: 4; animation: brakepulse .75s ease-out forwards; }
@keyframes brakepulse { 0% { transform: scale(.5); opacity: .9; } 100% { transform: scale(2.2); opacity: 0; } }
.drive__svg .sensor-ring { fill: none; stroke: rgba(29,29,31,.12); stroke-width: 2; stroke-dasharray: 2 6; }
.drive__svg .sensor-ring.is-on { stroke: #ff9f43; stroke-dasharray: none; stroke-width: 3; }
.drive__svg .vac { filter: drop-shadow(0 4px 4px rgba(0,0,0,.28)); }
.drive__svg .vac__body { fill: #2b2b2e; }
.drive__svg .vac__ring { fill: none; stroke: rgba(255,255,255,.3); stroke-width: 2; }
.drive__svg .vac__bin { fill: #6e6e73; }
.drive__svg .vac__eye { fill: #62d26f; }
.drive__svg .vac.is-waiting .vac__eye { fill: #ff9f43; animation: vacblink 1s steps(1) infinite; }
@keyframes vacblink { 50% { opacity: .25; } }
.drive__svg .bot image { filter: drop-shadow(0 8px 8px rgba(0,0,0,.28)); }
.drive__svg .target { opacity: 0; transition: opacity .3s ease; }
.drive__svg .target.is-on { opacity: 1; }
.drive__svg .target circle { fill: none; stroke: #ffd98a; stroke-width: 3; filter: drop-shadow(0 0 6px #ffe9a8); animation: haloburst 2.4s ease-out infinite; }
.drive__svg .target circle:nth-child(2) { animation-delay: .5s; stroke: #ffefb8; }
.drive__svg .target circle:nth-child(3) { animation-delay: 1s; stroke: #fffbe8; }
.drive__svg .goal-zone { fill: rgba(255,255,255,.35); stroke: rgba(255,255,255,.9); stroke-width: 2; stroke-dasharray: 8 8; }
.drive__toast {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  padding: 22px 28px 20px; border-radius: 22px; text-align: center; min-width: 280px; max-width: min(92%, 420px); box-shadow: var(--shadow);
}
.drive__toast strong { display: block; font-size: 22px; letter-spacing: -0.02em; margin-bottom: 6px; text-wrap: balance; }
.drive__toast span { display: block; font-size: 14px; color: var(--muted); text-wrap: balance; }
.drive__toast small { display: block; font-size: 12px; color: var(--muted); margin-top: 8px; }
.drive__toast .btn { margin-top: 14px; }
.drive__toast-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.drive__toast .drive__stars, .drive__stars { display: flex; justify-content: center; gap: 3px; margin: 2px 0 8px; }
.drive__stars i { display: block; width: 16px; height: 16px; background: var(--line); clip-path: polygon(50% 0, 62% 35%, 100% 38%, 70% 60%, 80% 100%, 50% 76%, 20% 100%, 30% 60%, 0 38%, 38% 35%); }
.drive__stars--loop i:nth-child(3n) { margin-right: 7px; }
.drive__stars--loop i:last-child { margin-right: 0; }
.drive__stars i.is-on { background: #e0a83a; animation: starpop .5s cubic-bezier(.2,1.4,.4,1) both; }
.drive__stars i.is-on:nth-child(2) { animation-delay: .12s; } .drive__stars i.is-on:nth-child(3) { animation-delay: .24s; }
@keyframes starpop { 0% { transform: scale(0); } 100% { transform: scale(1); } }
.drive__hud { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.drive__stat { padding: 9px 11px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); min-width: 0; }
.drive__stat--3 { grid-column: span 3; }
.drive__stat--2 { grid-column: span 2; }
.drive__stat strong { display: block; font-size: 18px; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.drive__stat small { display: block; font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.drive__k { display: flex; justify-content: space-between; gap: 6px; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 2px; }
.drive__k em { font-style: normal; letter-spacing: 0; font-variant-numeric: tabular-nums; }
.drive__status { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); min-height: 20px; }
.drive__dot { width: 8px; height: 8px; border-radius: 50%; background: #9a9a9e; flex: none; transition: background .2s ease; }
.drive__status.is-driving .drive__dot { background: #62d26f; box-shadow: 0 0 0 4px rgba(98,210,111,.18); }
.drive__status.is-assist .drive__dot { background: #ff9f43; box-shadow: 0 0 0 4px rgba(255,159,67,.2); }
.drive__status.is-stopped .drive__dot { background: #ff5a5f; box-shadow: 0 0 0 4px rgba(255,90,95,.18); }

.joy {
  position: relative; width: 196px; height: 196px; margin: 2px auto 0; border-radius: 50%; touch-action: none; cursor: grab; user-select: none;
  background: radial-gradient(circle at 50% 42%, #f8f6f1, #e7e2d9 66%, #d8d1c5 100%);
  box-shadow: inset 0 2px 6px rgba(255,255,255,.9), inset 0 -10px 18px rgba(0,0,0,.09), 0 10px 24px rgba(0,0,0,.10);
  outline: none;
}
.joy:focus-visible { box-shadow: 0 0 0 3px var(--accent), inset 0 2px 6px rgba(255,255,255,.9); }
.joy.is-active { cursor: grabbing; }
.joy__ring { position: absolute; top: 20px; right: 20px; bottom: 20px; left: 20px; inset: 20px; border-radius: 50%; border: 1px dashed rgba(0,0,0,.16); }
.joy__arc {
  position: absolute; top: -8px; right: -8px; bottom: -8px; left: -8px; inset: -8px; border-radius: 50%; opacity: 0; pointer-events: none;
  background: conic-gradient(from calc(var(--ang, 0deg) - 40deg), transparent 0deg, #62d26f 40deg, transparent 80deg);
  -webkit-mask: radial-gradient(circle closest-side, transparent 0 calc(100% - 7px), #000 calc(100% - 6px)); mask: radial-gradient(circle closest-side, transparent 0 calc(100% - 7px), #000 calc(100% - 6px));
}
.joy__cross::before, .joy__cross::after { content: ""; position: absolute; left: 50%; top: 50%; background: rgba(0,0,0,.09); transform: translate(-50%, -50%); }
.joy__cross::before { width: 2px; height: 116px; }
.joy__cross::after { width: 116px; height: 2px; }
.joy__shade {
  position: absolute; left: 50%; top: 50%; width: 76px; height: 76px; margin: -38px 0 0 -38px; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, rgba(0,0,0,.45), rgba(0,0,0,0) 70%); opacity: .35; filter: blur(4px);
  transform: translate(0, 6px); transition: transform .22s cubic-bezier(.2,1.2,.4,1), opacity .22s ease;
}
.joy__knob {
  position: absolute; left: 50%; top: 50%; width: 74px; height: 74px; margin: -37px 0 0 -37px; border-radius: 50%;
  background: radial-gradient(circle at 36% 30%, #8f6848 0%, #5e4030 46%, #3b2719 100%);
  box-shadow: 0 2px 4px rgba(0,0,0,.25), inset 0 2px 4px rgba(255,255,255,.3), inset 0 -5px 10px rgba(0,0,0,.4);
  transition: transform .22s cubic-bezier(.2,1.2,.4,1);
  will-change: transform;
}
.joy__knob::after { content: ""; position: absolute; top: 9px; right: 9px; bottom: 9px; left: 9px; inset: 9px; border-radius: 50%; border: 1px solid rgba(255,255,255,.14); box-shadow: inset 0 0 0 1px rgba(0,0,0,.18); }
.joy.is-active .joy__knob, .joy.is-active .joy__shade { transition: none; }
.joy__knob i { position: absolute; left: 50%; top: 50%; width: 22px; height: 22px; margin: -11px 0 0 -11px; border-radius: 50%; background: radial-gradient(circle at 40% 35%, #2a2a2c, #0f0f10); box-shadow: inset 0 1px 2px rgba(255,255,255,.2); }

.switch { display: flex; align-items: center; gap: 10px; cursor: pointer; padding: 4px 2px; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; pointer-events: none; }
.switch__track { position: relative; flex: none; width: 42px; height: 26px; border-radius: 13px; background: rgba(120,120,128,.32); transition: background .2s ease; }
.switch__track::after { content: ""; position: absolute; top: 2px; left: 2px; width: 22px; height: 22px; border-radius: 50%; background: #fff; box-shadow: 0 2px 6px rgba(0,0,0,.25); transition: transform .2s cubic-bezier(.2,.8,.2,1); }
.switch input:checked + .switch__track { background: #62d26f; }
.switch input:checked + .switch__track::after { transform: translateX(16px); }
.switch input:focus-visible + .switch__track { box-shadow: 0 0 0 3px var(--accent); }
.switch__text { font-size: 13px; font-weight: 500; line-height: 1.3; }
.switch__text small { display: block; font-size: 11.5px; font-weight: 400; color: var(--muted); }
.drive__keys { font-size: 12.5px; color: var(--muted); text-align: center; line-height: 1.6; }
.drive__keys kbd { display: inline-block; min-width: 20px; padding: 1px 5px; margin: 0 1px; border-radius: 5px; border: 1px solid var(--line); background: var(--bg); font: 600 11px/1.5 Inter, system-ui, sans-serif; color: var(--text); }
.drive__reset { align-self: center; }
@media (max-width: 900px) {
  .drive__hud { grid-column: 1 / -1; grid-template-columns: repeat(12, 1fr); }
  .drive__hud .drive__stat--3 { grid-column: span 3; } .drive__hud .drive__stat--2 { grid-column: span 2; }
  .drive__status { grid-column: 1 / -1; }
  .joy { grid-row: span 3; }
  .drive__keys { text-align: left; }
}
@media (max-width: 700px) {
  /* phone: a taller scene with a camera that follows the chair, the joystick floating inside it */
  .drive { margin-top: 48px; }
  .lab__stage .joy{
    position: absolute; right: 12px; bottom: 12px; z-index: 3; width: 148px; height: 148px; margin: 0;
    background: radial-gradient(circle at 50% 42%, rgba(248,246,241,.92), rgba(231,226,217,.92) 66%, rgba(216,209,197,.92) 100%);
    box-shadow: inset 0 2px 6px rgba(255,255,255,.9), inset 0 -8px 14px rgba(0,0,0,.08), 0 10px 24px rgba(0,0,0,.18);
  }
  .lab__stage .joy__ring{ top: 14px; right: 14px; bottom: 14px; left: 14px; inset: 14px; }
  .lab__stage .joy__cross::before{ height: 88px; } .lab__stage .joy__cross::after{ width: 88px; }
  .lab__stage .joy__knob{ width: 56px; height: 56px; margin: -28px 0 0 -28px; }
  .lab__stage .joy__knob i{ width: 16px; height: 16px; margin: -8px 0 0 -8px; }
  .lab__stage .joy__shade{ width: 54px; height: 54px; margin: -27px 0 0 -27px; }
  .lab__stage .joy__arc{ top: -6px; right: -6px; bottom: -6px; left: -6px; inset: -6px; }
  .drive__toast { width: 86%; min-width: 0; padding: 16px 16px 14px; }
  .drive__toast strong { font-size: 18px; }
  .drive__toast span { font-size: 13px; }
  .drive__toast small { margin-top: 4px; }
  .drive__hud { display: contents; }
  .drive__hud .drive__stat--3 { grid-column: span 3; }
  .drive__hud .drive__stat--2 { grid-column: span 2; }
  .drive__stat { padding: 10px 12px; }
  .drive__stat strong { font-size: 19px; }
  .drive__k { font-size: 11px; }
  .drive__status { grid-column: 1 / -1; font-size: 13.5px; padding: 2px 4px; }   /* fallback only: JS moves the pad into the scene on phones */
  .switch { grid-column: 1 / 4; }
  .switch__text { font-size: 14px; }
  .drive__keys { display: none; }
  .drive__reset { grid-column: 4 / 7; justify-self: end; align-self: center; height: 40px; padding: 0 16px; font-size: 14px; white-space: nowrap; }
}
@media (prefers-reduced-motion: reduce) {
  .drive__svg .target circle, .drive__svg .brake__ring, .drive__svg .vac.is-waiting .vac__eye, .drive__stars i.is-on, .drive__flash.is-on{ animation: none; }
  .drive__svg .target circle { opacity: .7; }
}

/* Dock: clickable, shows charging state */
.navmap__dockpad { cursor: pointer; outline: none; }
@keyframes dockpulse { 0% { transform: scale(.6); opacity: .8; } 100% { transform: scale(2.4); opacity: 0; } }

/* ---------- Who it's for ---------- */
/* v43: "A day with CIHANG" — the picnic photo beside a vertical day, each moment tagged with the situation it serves
   (the four persona cards and the horizontal timeline were merged into this one block; no icons) */
.life { display: grid; grid-template-columns: 1.15fr 1fr; gap: 18px; align-items: stretch; }
.life__photo { display: flex; flex-direction: column; margin: 0; }
.life__photo img { aspect-ratio: 16 / 9; }
.life__day { list-style: none; margin: 0; padding: 6px 24px; display: flex; flex-direction: column; justify-content: space-between; border-radius: var(--radius); border: 1px solid var(--line); background: var(--bg-alt); box-shadow: var(--shadow); }
.life__day li { display: grid; grid-template-columns: 52px minmax(0, 1fr) auto; column-gap: 14px; align-items: center; padding: 12px 0; border-top: 1px solid var(--line); }
.life__day li:first-child { border-top: 0; }
.life__day time { font-size: 13px; font-weight: 600; letter-spacing: .04em; color: var(--accent); font-variant-numeric: tabular-nums; }
.life__day strong { display: block; font-size: 16px; letter-spacing: -0.01em; margin-bottom: 2px; text-wrap: balance; }
.life__day span { display: block; font-size: 13.5px; color: var(--muted); line-height: 1.45; text-wrap: pretty; }
.life__day em { font-style: normal; font-size: 12px; font-weight: 500; padding: 5px 10px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg); color: var(--text); white-space: nowrap; }


.orgs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.orgs .card img { aspect-ratio: 4 / 3; }   /* v44: tighter, taller crops — more photograph, less corridor */

@media (max-width: 1100px) { .life { grid-template-columns: 1fr; } .life__day { padding: 4px 20px; } }
@media (max-width: 1000px) { .orgs { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .life__day li { grid-template-columns: 50px minmax(0, 1fr); row-gap: 8px; } .life__day em { grid-column: 2; justify-self: start; } }

/* ==========================================================================
   Phone layout. Everything below 700 px is tuned for a thumb and a small screen:
   larger type, one column, the demos rebuilt, and a buy bar that follows you.
   ========================================================================== */

/* ---------- Languages ---------- */
.i18n-loading body { visibility: hidden; }
.lang { position: relative; }
.lang__btn { width: auto; padding: 0 9px 0 8px; gap: 5px; }
.lang__code { font-size: 11.5px; font-weight: 600; letter-spacing: .06em; }
.lang__menu { position: absolute; right: 0; top: calc(100% + 8px); min-width: 168px; padding: 6px; border-radius: 16px; display: grid; gap: 2px; z-index: 60; box-shadow: var(--shadow); }
.lang__menu[hidden] { display: none; }
.lang__item { text-align: left; padding: 9px 12px; border-radius: 10px; border: 0; background: transparent; font: inherit; font-size: 14px; color: var(--text); cursor: pointer; }
.lang__item:hover { background: rgba(0,0,0,.06); }
:root[data-theme="dark"] .lang__item:hover { background: rgba(255,255,255,.08); }
.lang__item.is-active { background: var(--text); color: var(--bg); }
.nav__sheet-langs { display: none; }
.lang__pill { height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg); font: inherit; font-size: 14px; color: var(--text); cursor: pointer; }
.lang__pill.is-active { background: var(--text); color: var(--bg); border-color: var(--text); }
/* CJK: system fonts with proper glyphs, and no negative tracking on headlines */
:root:lang(zh-CN) { --font: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans SC", sans-serif; }
:root:lang(ja) { --font: "Inter", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", "Noto Sans CJK JP", "Noto Sans JP", sans-serif; }
:root:lang(ko) { --font: "Inter", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans CJK KR", "Noto Sans KR", sans-serif; }
:root:lang(zh-CN) .headline, :root:lang(ja) .headline, :root:lang(ko) .headline,
:root:lang(zh-CN) .buy__title, :root:lang(ja) .buy__title, :root:lang(ko) .buy__title,
:root:lang(zh-CN) .film__title, :root:lang(ja) .film__title, :root:lang(ko) .film__title { letter-spacing: 0; }
:root:lang(zh-CN) .lede, :root:lang(ja) .lede, :root:lang(ko) .lede,
:root:lang(zh-CN) p, :root:lang(ja) p, :root:lang(ko) p { line-height: 1.7; }
:root:lang(ja) body, :root:lang(zh-CN) body, :root:lang(ko) body { word-break: normal; overflow-wrap: anywhere; }

/* ---------- Menu sheet (≤ 820px) ---------- */
@media (max-width: 820px) {
  .nav__links {
    /* the nav's backdrop-filter makes it the containing block, so the sheet is absolute and sized to the viewport */
    position: absolute; left: 0; right: 0; top: var(--nav-h);
    height: calc(100vh - var(--nav-h)); height: calc(100dvh - var(--nav-h));
    padding: 12px 24px calc(24px + env(safe-area-inset-bottom, 0px));
    border-bottom: 0; overflow-y: auto; -webkit-overflow-scrolling: touch;
  }
  .nav__links > a { padding: 14px 0; font-size: 28px; font-weight: 600; letter-spacing: -0.02em; color: var(--text); border-bottom: 1px solid var(--line); }
  .nav__links > a.is-active { color: var(--accent); }
  .nav__sheet-langs { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 22px; }
  .nav__sheet-foot { display: flex; gap: 10px; margin-top: auto; padding-top: 24px; }
  .nav__sheet-foot .btn { flex: 1; height: 50px; font-size: 16px; padding: 0 18px; border-bottom: 0; }
  .nav__sheet-foot .btn--primary { background: var(--text); color: var(--bg); }
  .nav.is-open .nav__links { display: flex; }
  body.menu-open { overflow: hidden; }
  .lang__code { display: none; }
  .lang__btn { width: 36px; padding: 0; }
}

/* ---------- Sticky buy bar (phones only) ---------- */
.buybar {
  position: fixed; left: 12px; right: 12px; bottom: calc(12px + env(safe-area-inset-bottom, 0px)); z-index: 40;
  display: none; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 10px 10px 18px; border-radius: 999px;
  transform: translateY(120%); opacity: 0; transition: transform .35s cubic-bezier(.2,.8,.2,1), opacity .3s ease;
}
.buybar.is-on { transform: none; opacity: 1; }
.buybar__text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.buybar__text strong { font-size: 19px; font-weight: 700; letter-spacing: -0.02em; }
.buybar__text span { font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.buybar .btn { height: 44px; padding: 0 22px; flex: none; }
@media (max-width: 700px) { .buybar { display: flex; } .buybar[hidden] { display: none; } }

.navmap__roomlist { display: none; }

@media (max-width: 700px) {
  :root { --radius: 22px; --radius-s: 16px; }
  .container, .container--wide, .container--narrow { width: min(100%, 100% - 40px); }
  .container + .container, .container + .container--wide { margin-top: 36px; }
  .section { padding-block: 64px; }
  .eyebrow { font-size: 12px; margin-bottom: 14px; }
  .headline { font-size: clamp(29px, 8.4vw, 36px); line-height: 1.1; letter-spacing: -0.028em; max-width: none; }
  .sub-headline { font-size: 24px; margin-bottom: 20px; }
  .lede { font-size: 17px; line-height: 1.5; margin-top: 16px; }
  .btn { height: 48px; font-size: 16px; }
  .card figcaption { padding: 16px 18px 18px; font-size: 15px; line-height: 1.45; }
  .card figcaption strong { font-size: 16px; }
  .stat-row { gap: 22px 18px; padding-top: 24px; }
  .stat__num { font-size: 30px; }
  .stat__label { font-size: 14px; margin-top: 6px; }

  /* Film: the video stays whole, the controls sit under it, then a short opener */
  .film { background: #0c0c0d; color: #f5f5f7; }
  .film__frame { display: flex; flex-direction: column; aspect-ratio: auto; height: auto; overflow: visible; }
  .film__frame video, .film__frame img { aspect-ratio: 16 / 9; height: auto; width: 100%; object-fit: cover; }
  .video-controls { position: static; padding: 12px 20px 0; gap: 10px; }
  .video-time { font-size: 12px; min-width: 74px; text-shadow: none; color: #a1a1a6; }
  .vbtn { height: 38px; }
  #video-sound, #video-play { width: 38px; }
  .film__intro { display: block; padding: 22px 20px 34px; }
  .film__eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: #d2a67f; margin: 0 0 10px; }
  .film__title { font-size: clamp(28px, 8.2vw, 34px); line-height: 1.12; letter-spacing: -0.025em; font-weight: 700; text-wrap: balance; max-width: 15ch; }
  .film__more { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-size: 15px; font-weight: 500; color: #a1a1a6; }
  .film__more svg { animation: cue 2s ease-in-out infinite; transform: none; }
  @keyframes cuephone { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(4px); } }
  .film__more svg { animation-name: cuephone; }

  /* Buy: kept short so the picture is never far above the price */
  .buy { padding-block: 40px 56px; }
  .buy__grid { gap: 20px; }
  .buy__main { aspect-ratio: 4 / 3; border-radius: 22px; }
  .buy__main img { object-fit: contain; background: #fff; }
  .buy__thumbs { gap: 8px; margin-top: 10px; }
  .buy__thumbs button { flex: 1; width: auto; height: 54px; border-radius: 12px; }
  .buy__title { font-size: 40px; }
  .buy__sub { font-size: 16px; margin-top: 8px; }
  .buy__group { margin-top: 18px; }
  .buy__group h3 { margin-bottom: 8px; }
  .buy__options { grid-template-columns: 1fr 1fr; gap: 8px; }
  .opt { padding: 12px 10px; border-radius: 14px; align-items: center; text-align: center; }
  .opt strong { font-size: 16px; }
  .opt span { display: none; }                      /* the price note below says what the version is for */
  .buy__swatches { gap: 8px; }
  .swatch { flex: 1; justify-content: center; font-size: 14.5px; padding: 8px 10px 8px 8px; gap: 8px; }
  .swatch__more { display: none; }
  .buy__includes { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 10px 12px; margin-top: 18px; padding-top: 16px; }
  .buy__includes li { gap: 8px; font-size: 13.5px; }
  .buy__includes strong { font-size: 17px; min-width: 52px; }
  /* long 'Offline' labels (Hors ligne, Sin conexión, オフライン, 오프라인): one column so the text beside them has room */
  :root:lang(fr) .buy__includes, :root:lang(es) .buy__includes, :root:lang(ja) .buy__includes, :root:lang(ko) .buy__includes { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .buy__price { margin-top: 18px; padding: 14px 14px 14px 18px; }
  .buy__amount { font-size: 28px; }
  .buy__price .btn { flex: 1; }

  /* Fold */
  .unfold { height: 130vh; }
  .unfold__stage { width: 100%; aspect-ratio: 3 / 2; border-radius: 22px; }
  .unfold__poster, .unfold__canvas { object-fit: cover; object-position: 15% 50%; }   /* 3:2 keeps the film caption and the chair whole */

  /* Design */
  .design-side { gap: 14px; }
  .material-list { padding: 4px 20px; }
  .material-list li { padding: 14px 0; }
  .material-list span { font-size: 16px; }
  .material-list small { font-size: 14px; }
  .banner figcaption { padding: 16px 18px 18px; font-size: 15px; }
  .banner figcaption strong { display: block; margin: 0 0 3px; font-size: 16px; }

  /* Voice */
  .chat { padding: 18px; border-radius: 22px; }
  .bubble { font-size: 16px; padding: 11px 15px; }
  .feature-list { gap: 22px; }
  .feature h3 { font-size: 19px; }
  .feature p { font-size: 16px; }

  /* Autonomy: the plan gets the whole width; rooms become dots plus a chip list; the app is a card */
  .navmap { gap: 14px; }
  :root[data-theme="dark"] .phone__screen { background: var(--bg); }
  .navmap__tele { grid-template-columns: 1.25fr 1fr 1.15fr; gap: 8px; }
  .tele { flex-direction: column; align-items: stretch; padding: 10px 12px; border-radius: 14px; }
  .tele__label { font-size: 10px; min-width: 0; }
  .tele__value { font-size: 16px; }
  .tele small { display: block; font-size: 11px; }
  .navmap__log { min-height: 64px; max-height: 160px; gap: 8px; }
  .msg { font-size: 14.5px; padding: 9px 13px; border-radius: 16px; max-width: 88%; }
  .navmap__chips { gap: 8px; }
  .navmap__chips button { height: 34px; padding: 0 14px; font-size: 13.5px; }
  .navmap__ask { gap: 8px; }
  .navmap__ask input { height: 44px; font-size: 16px; padding: 0 16px; }
  .navmap__ask button { width: 44px; height: 44px; }
  .navmap__ask button svg { width: 18px; height: 18px; }

  /* Perception */
  .split .card img { height: auto; }
  .spec-list { padding: 4px 20px; }
  .spec-list > div { padding: 13px 0; }
  .spec-list dt { font-size: 16px; }
  .spec-list dd { font-size: 14.5px; }
  .ways__title { font-size: 26px; margin-bottom: 18px; }
  .ways__list { display: flex; gap: 10px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 4px 20px 12px; margin: 0 -20px; scrollbar-width: none; }
  .ways__list::-webkit-scrollbar { display: none; }
  .way { flex: 0 0 44%; scroll-snap-align: start; padding: 22px 12px 20px; }
  .way svg { width: 40px; height: 40px; margin-bottom: 12px; }
  .way span { font-size: 16px; }
  .way small { font-size: 13.5px; }

  /* People */
  .life { gap: 14px; }
  .life__day { padding: 2px 18px; }
  .life__day li { padding: 13px 0; }
  .life__day strong { font-size: 17px; }
  .life__day span { font-size: 14.5px; }

  /* Specs: one line per number */
  .spec-grid { display: flex; flex-direction: column; gap: 0; border-top: 1px solid var(--line); }
  .spec-grid .spec.glass {
    flex-direction: row; align-items: baseline; justify-content: space-between; gap: 16px; min-height: 0;
    padding: 15px 2px; border-radius: 0; border: 0; border-bottom: 1px solid var(--line); background: none; box-shadow: none;
    -webkit-backdrop-filter: none; backdrop-filter: none;
  }
  .spec__num { font-size: 24px; white-space: nowrap; }
  .spec__label { margin-top: 0; font-size: 15px; text-align: right; max-width: 58%; }

  /* FAQ + closing */
  .faq summary { font-size: 17.5px; padding: 18px 40px 18px 0; }
  .faq p { font-size: 16.5px; padding-bottom: 20px; }
  .closing .cta-row { flex-direction: column; align-items: stretch; }
  .closing .cta-row .btn { width: 100%; }
  .footer { padding-block: 32px 40px; }
}

/* the point cloud could not start (very old browser): no scroll track, the plan and its controls just sit in the page */
.scan--off, .scan--off .lab__track { height: auto !important; }
.scan--off .lab__sticky, .scan--off .lab__stage { position: static !important; height: auto !important; top: auto !important; }
.scan--off .scan__layer { display: none; }

/* ---------- Older browser cores (no aspect-ratio: Chromium < 88, Safari < 15 — still common in some desktop browsers) ----------
   Boxes whose content is absolutely positioned would collapse to nothing; give them their height with padding instead. */
@supports not (aspect-ratio: 1 / 1) {
  .unfold__stage::before { content: ""; display: block; padding-top: 56.25%; }
  .lab__plan::before { content: ""; display: block; padding-top: 65.885%; }
  .film__frame { height: calc(100vh - var(--nav-h)); }
  .card img, .design-side .card img, .split .card img, .orgs .card img, .life__photo img { height: auto; }
  .banner img { height: auto; }
  @media (max-width: 700px) {
    .lab__stage.is-drive .lab__plan::before { padding-top: 125%; }
    .unfold__stage::before { padding-top: 66.667%; }
  }
}