:root {
    --bg: #FFFFFF;
    --soft: #F4F5F7;
    --soft-2: #ECEEF1;
    --ink: #0B0C0E;
    --ink-2: #3A3D42;
    --mute: #6E7178;
    --faint: #A3A6AD;
    --line: rgba(11, 12, 14, 0.09);
    --line-strong: rgba(11, 12, 14, 0.18);
    --steel: #4C6485;
    --radius: 22px;
    --font-display: 'Space Grotesk', -apple-system, system-ui, sans-serif;
    --font-sans: 'Inter', -apple-system, system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
    --ease: cubic-bezier(.2, .7, .2, 1);
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
  body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  img, video, canvas { display: block; max-width: 100%; }
  [hidden] { display: none !important; }
  a { color: inherit; }
  .wrap { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 40px; }

  .eyebrow {
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mute);
  }
  h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.03em; line-height: 1.02; }
  h2 { font-size: clamp(40px, 5.6vw, 76px); }
  .lead { font-size: clamp(17px, 1.5vw, 20px); color: var(--ink-2); max-width: 46ch; }
  .sec { padding: 140px 0; }
  .sec-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 40px; margin-bottom: 64px; }
  .sec-head .eyebrow { margin-bottom: 20px; }

  .btn {
    display: inline-flex; align-items: center; gap: 10px;
    font-family: var(--font-sans); font-size: 15px; font-weight: 500;
    text-decoration: none; white-space: nowrap;
    padding: 15px 26px; border-radius: 999px;
    border: 1px solid var(--ink);
    transition: background .25s, color .25s, transform .25s var(--ease);
  }
  .btn-dark { background: var(--ink); color: #fff; }
  .btn-dark:hover { background: #2A2D33; border-color: #2A2D33; }
  .btn-light { background: transparent; color: var(--ink); border-color: var(--line-strong); }
  .btn-light:hover { border-color: var(--ink); }
  /* Pre-order buttons (every .btn to /buy, marked by the script): a ring shows
     around the button on hover; a press pushes it in and sends the ring outward */
  .btn-ring { position: relative; --ring: var(--ink); }
  .btn-ring::after {
    content: ''; position: absolute; inset: -5px; border-radius: inherit; pointer-events: none;
    border: 1.5px solid var(--ring); opacity: 0; transform: scale(.94);
    transition: opacity .25s, transform .3s var(--ease);
  }
  .btn-ring:hover::after, .btn-ring:focus-visible::after { opacity: .3; transform: scale(1); }
  .btn-ring:active { transform: scale(.96); transition-duration: .08s; }
  .btn-ring.ping::after { animation: ring-out .6s var(--ease) forwards; }
  @keyframes ring-out {
    from { inset: -4px; opacity: .7; transform: scale(1); }
    to { inset: -20px; opacity: 0; transform: scale(1); }
  }
  .bundle.featured .btn-ring, .card.featured .btn-ring { --ring: #fff; }
  @media (prefers-reduced-motion: reduce) {
    .btn-ring:active { transform: none; }
    .btn-ring.ping::after { animation: none; }
  }
  .link-arrow { font-weight: 500; text-decoration: none; border-bottom: 1px solid var(--line-strong); padding-bottom: 2px; transition: border-color .25s; }
  .link-arrow:hover { border-color: var(--ink); }

  /* ---------- nav ---------- */
  nav {
    position: fixed; inset: 0 0 auto 0; z-index: 50;
    display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; column-gap: 28px;
    padding: 16px 40px;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    border-bottom: 1px solid transparent;
    transition: border-color .3s;
  }
  nav.scrolled { border-bottom-color: var(--line); }
  .brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--font-display); font-weight: 600; font-size: 17px; letter-spacing: -0.01em; }
  .brand img { height: 17px; width: auto; display: block; }
  .foot-logo img { height: 38px; }
  .nav-links { display: flex; gap: 44px; }
  .nav-links a { font-size: 16px; color: var(--ink-2); text-decoration: none; transition: color .2s; }
  .nav-links a:hover { color: var(--ink); }
  .nav-sensor { white-space: nowrap; }
  /* product menus: hover or keyboard focus drops a panel of that line's robots */
  .nav-links { align-items: center; }
  .nav-menu { position: relative; }
  .nav-top { display: inline-flex; align-items: center; gap: 6px; padding: 6px 0; }
  .nav-top::after {
    content: ''; width: 5px; height: 5px; margin-top: -3px;
    border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg); opacity: .55; transition: transform .2s var(--ease);
  }
  .nav-menu:hover .nav-top, .nav-menu:focus-within .nav-top { color: var(--ink); }
  .nav-menu:hover .nav-top::after, .nav-menu:focus-within .nav-top::after { transform: translateY(2px) rotate(225deg); }
  .nav-drop {
    position: absolute; top: 100%; left: 50%; z-index: 60;
    padding-top: 12px;                          /* keeps the hover alive between label and panel */
    transform: translate(-50%, 6px); opacity: 0; visibility: hidden; pointer-events: none;
    transition: opacity .18s, transform .25s var(--ease), visibility 0s .25s;
  }
  .nav-menu:hover .nav-drop, .nav-menu:focus-within .nav-drop {
    transform: translate(-50%, 0); opacity: 1; visibility: visible; pointer-events: auto;
    transition: opacity .18s, transform .25s var(--ease), visibility 0s;
  }
  .nav-drop-inner {
    min-width: 340px; padding: 8px; display: grid; gap: 2px;
    background: #fff; border: 1px solid var(--line); border-radius: 16px;
    box-shadow: 0 24px 48px -20px rgba(11, 12, 14, .28);
  }
  .nav-links .nav-item {
    display: grid; grid-template-columns: 56px 1fr auto; align-items: center; gap: 14px;
    padding: 8px 14px 8px 8px; border-radius: 10px; color: var(--ink); transition: background .15s;
  }
  .nav-links .nav-item:hover, .nav-links .nav-item:focus-visible { background: var(--soft); }
  .nav-item img { width: 56px; height: 56px; border-radius: 8px; object-fit: cover; background: var(--soft); }
  .nav-item b { display: block; font-family: var(--font-display); font-size: 15px; font-weight: 500; letter-spacing: -0.01em; }
  .nav-item small { display: block; font-size: 12px; color: var(--mute); white-space: nowrap; }
  .nav-item em { font-style: normal; font-family: var(--font-mono); font-size: 12px; color: var(--ink-2); }
  .nav-links .nav-more { padding: 10px 14px 8px; font-size: 13px; color: var(--steel); border-top: 1px solid var(--line); margin-top: 4px; }
  .nav-right { justify-self: end; display: flex; align-items: center; gap: 18px; }
  .nav-note { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--mute); }
  .nav-cart { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--ink); border: 1px solid var(--line-strong); border-radius: 999px; padding: 9px 12px 9px 16px; transition: border-color .2s; }
  .nav-cart:hover { border-color: var(--ink); }
  .nav-cart span { min-width: 20px; height: 20px; border-radius: 999px; background: var(--ink); color: #fff; font-size: 12px; display: inline-flex; align-items: center; justify-content: center; padding: 0 6px; }
  nav .btn { padding: 10px 20px; font-size: 14px; }

  /* ---------- hero ---------- */
  .hero { padding: 132px 0 40px; }
  .hero-grid { display: grid; grid-template-columns: 1fr 1.08fr; gap: 56px; align-items: center; }
  .hero h1 { font-size: clamp(56px, 8.4vw, 116px); letter-spacing: -0.045em; line-height: .94; margin: 22px 0 28px; }
  .hero .lead { margin-bottom: 40px; }
  .hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 26px; }
  .hero-page-links { display: none; }
  .hero-fine { font-size: 13px; color: var(--mute); }
  .hero-fine b { color: var(--ink-2); font-weight: 500; }
  /* backer: Founders, Inc.'s mark and name */
  .backed { display: inline-flex; align-items: center; gap: 9px; padding: 8px 16px 8px 14px; border: 1px solid var(--line); border-radius: 999px; background: #fff; font-size: 13px; color: var(--mute); }
  .backed img { width: 13px; height: 15px; }
  .backed b { color: var(--ink); font-weight: 600; }
  .hero .backed { margin-top: 28px; }

  /* keep the build tabs above the fold on short laptop screens */
  .hero-visual { width: min(100%, calc(100vh - 230px)); min-width: 380px; justify-self: end; }
  .stage { position: relative; aspect-ratio: 1; border-radius: 28px; overflow: hidden; background: var(--soft); }
  .stage img {
    position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
    opacity: 0; transform: scale(1.035);
    transition: opacity .9s var(--ease), transform 1.6s var(--ease);
  }
  .stage img.on { opacity: 1; transform: scale(1); }
  /* an arm's nominal / peak load, over its photo (catalog `load`) */
  .load-tag {
    position: absolute; left: 22px; top: 20px; z-index: 2; display: flex;
    background: rgba(255,255,255,.82); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  }
  .load-tag div { padding: 9px 14px 10px; }
  .load-tag div + div { border-left: 1px solid var(--line); }
  .load-tag small { display: block; font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--mute); }
  .load-tag b { display: block; margin-top: 2px; font-family: var(--font-display); font-size: 22px; font-weight: 600; letter-spacing: -.02em; color: var(--ink); }
  .stage .load-tag { top: auto; bottom: 20px; }
  @media (max-width: 560px) { .load-tag div { padding: 7px 11px 8px; } .load-tag b { font-size: 18px; } }
  .stage-tag {
    position: absolute; left: 22px; top: 20px;
    font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--ink-2); background: rgba(255,255,255,.72); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    padding: 7px 12px; border-radius: 999px;
  }
  /* tabs share the row by label length, so "Humanoid Arm" stays on one line */
  .forms { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
  .forms .form-tab { flex: 1 1 auto; white-space: nowrap; }
  .form-tab {
    appearance: none; border: 1px solid var(--line); background: #fff; cursor: pointer;
    border-radius: 14px; padding: 12px 14px; text-align: left; font: inherit; color: var(--ink);
    position: relative; overflow: hidden; transition: border-color .25s;
  }
  .stage .ribbon { width: 168px; height: 168px; }
  .stage .ribbon span { top: 38px; right: -50px; width: 226px; font-size: 12px; font-weight: 600; letter-spacing: .16em; padding: 10px 0; }
  /* forest green, not red: red is kept for early-bird savings */
  .stage .ribbon.edu span { background: #1F4D3A; }
  .form-tab:hover { border-color: var(--line-strong); }
  .form-tab .n { display: block; font-size: 14px; font-weight: 500; }
  .form-tab .p { display: block; font-family: var(--font-mono); font-size: 12px; color: var(--mute); margin-top: 2px; }
  .form-tab::after { content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 0; background: var(--ink); }
  .form-tab.on { border-color: var(--ink); }
  .form-tab.on::after { animation: tabfill var(--dwell, 4s) linear forwards; }
  .forms.paused .form-tab.on::after { animation: none; width: 100%; }
  @keyframes tabfill { to { width: 100%; } }

  .ticker { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-top: 72px; }
  .ticker .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
  .ticker div.cell { padding: 26px 0; border-left: 1px solid var(--line); padding-left: 24px; }
  .ticker div.cell:first-child { border-left: none; padding-left: 0; }
  .ticker .big { font-family: var(--font-display); font-size: 30px; font-weight: 600; letter-spacing: -0.03em; }
  .ticker .small { font-size: 13px; color: var(--mute); }

  /* ---------- transform (scroll-scrubbed frames) ---------- */
  .transform { position: relative; height: 340vh; }
  .transform-pin { position: sticky; top: 0; height: 100vh; display: flex; align-items: center; overflow: hidden; }
  .transform-grid { display: grid; grid-template-columns: 0.8fr 1.6fr; gap: 40px; align-items: center; width: 100%; }
  .transform h2 { margin: 18px 0 40px; }
  .steps { position: relative; min-height: 190px; }
  .step { position: absolute; inset: 0 auto auto 0; opacity: 0; transform: translateY(14px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
  .step.on { opacity: 1; transform: none; }
  .step .k { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; color: var(--steel); text-transform: uppercase; margin-bottom: 12px; }
  .step h3 { font-size: 30px; margin-bottom: 12px; }
  .step p { color: var(--ink-2); max-width: 36ch; }
  .progress { height: 2px; background: var(--line); margin-top: 36px; max-width: 320px; }
  .progress i { display: block; height: 100%; width: 0; background: var(--ink); }
  .seq-box { position: relative; aspect-ratio: 16 / 9; }
  .seq-box canvas { width: 100%; height: 100%; }

  /* ---------- scenes ---------- */
  .scenes { background: var(--ink); color: #fff; }
  .scenes .lead { color: #C4C7CD; }
  .player { position: relative; aspect-ratio: 16 / 9; border-radius: 26px; overflow: hidden; background: #1B1D21; }
  .player video { width: 100%; height: 100%; object-fit: cover; }
  .player-tag { position: absolute; left: 18px; top: 16px; font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-2); background: rgba(255,255,255,.78); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); padding: 6px 10px; border-radius: 999px; }
  .chapters { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 14px; }
  .chapters button {
    appearance: none; cursor: pointer; text-align: left; font: inherit; color: #fff;
    background: #16181B; border: 1px solid rgba(255,255,255,.08); border-radius: 14px; padding: 14px 16px 16px;
    position: relative; overflow: hidden; transition: border-color .25s, background .25s;
  }
  .chapters button:hover { border-color: rgba(255,255,255,.22); }
  .chapters button.on { background: #202328; border-color: rgba(255,255,255,.3); }
  .chapters .n { display: block; font-size: 15px; font-weight: 500; }
  .chapters .d { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: #9A9EA6; margin-top: 3px; }
  .chapters i { position: absolute; left: 0; bottom: 0; height: 2px; width: 0; background: #fff; }

  /* ---------- robots explorer ---------- */
  .tabs { display: inline-flex; gap: 4px; padding: 4px; border-radius: 999px; background: var(--soft); margin-bottom: 40px; flex-wrap: wrap; }
  .tabs button {
    appearance: none; border: 0; background: transparent; cursor: pointer; font: inherit; font-size: 14px; font-weight: 500;
    padding: 10px 20px; border-radius: 999px; color: var(--ink-2); transition: background .25s, color .25s, box-shadow .25s;
  }
  .tabs button.on { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08), 0 0 0 1px var(--line); }
  .robot { display: grid; grid-template-columns: 1.15fr 1fr; gap: 64px; align-items: start; }
  .gallery-main { aspect-ratio: 1; border-radius: 28px; overflow: hidden; background: var(--soft); }
  .gallery-main { position: relative; }
  .gallery-main img, .gallery-main video { width: 100%; height: 100%; object-fit: cover; transition: opacity .35s; }
  .thumbs button.vid { position: relative; }
  .thumbs button.vid::after { content: ''; position: absolute; left: 50%; top: 50%; transform: translate(-40%, -50%); border-left: 12px solid #fff; border-top: 8px solid transparent; border-bottom: 8px solid transparent; filter: drop-shadow(0 1px 3px rgba(0,0,0,.5)); }
  .thumbs { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; margin-top: 10px; }
  .thumbs button { appearance: none; border: 1px solid transparent; padding: 0; cursor: pointer; border-radius: 14px; overflow: hidden; background: var(--soft); aspect-ratio: 1; transition: border-color .2s; }
  .thumbs button.on { border-color: var(--ink); }
  .thumbs img { width: 100%; height: 100%; object-fit: cover; }
  .robot-info { padding-top: 10px; }
  .robot-info h3 { font-size: clamp(40px, 4.4vw, 60px); margin: 14px 0 12px; }
  .robot-info .tagline { font-size: 19px; color: var(--ink-2); margin-bottom: 30px; max-width: 34ch; }
  .price-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; padding: 22px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .price-row .amt { font-family: var(--font-display); font-size: 44px; font-weight: 600; letter-spacing: -0.03em; }
  .price-row .alt { font-size: 14px; color: var(--mute); }
  .specs { list-style: none; margin: 8px 0 32px; }
  .specs li { display: grid; grid-template-columns: 130px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  .specs .k { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--mute); padding-top: 2px; }
  .specs small { display: block; color: var(--mute); font-size: 13px; }
  .robot-ctas { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
  .robot-note { font-size: 13px; color: var(--mute); margin-top: 16px; }

  /* ---------- bundles ---------- */
  .bundle-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  .bundle {
    display: flex; flex-direction: column; overflow: hidden;
    border: 1px solid var(--line); border-radius: var(--radius); background: #fff;
    transition: border-color .25s, transform .4s var(--ease), box-shadow .4s var(--ease);
  }
  .bundle:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: 0 18px 40px -24px rgba(11,12,14,.25); }
  .bundle-media { position: relative; display: grid; grid-template-columns: 1fr 1fr; aspect-ratio: 16 / 9; background: var(--soft); }
  .bundle-media img { width: 100%; height: 100%; object-fit: cover; min-width: 0; }
  .bundle-media .swap {
    position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
    width: 52px; height: 52px; border-radius: 50%; background: #fff; color: var(--ink);
    display: grid; place-items: center; font-size: 22px; box-shadow: 0 6px 20px rgba(11,12,14,.14);
  }
  .bundle-body { padding: 26px 28px 28px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
  .bundle-top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
  .bundle h4 { font-family: var(--font-display); font-size: 28px; font-weight: 600; letter-spacing: -0.02em; }
  .swapline { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--steel); }
  .bundle .sub { color: var(--ink-2); font-size: 15px; max-width: 46ch; }
  .bundle .price { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin: 8px 0 16px; }
  .bundle .price b { font-family: var(--font-display); font-size: 38px; font-weight: 600; letter-spacing: -0.03em; }
  .bundle .price s { color: var(--faint); font-size: 17px; }
  .bundle .price .fine { margin-left: auto; font-size: 13px; color: var(--mute); }
  .bundle .btn { margin-top: auto; justify-content: center; }
  .bundle.featured { background: var(--ink); color: #fff; border-color: var(--ink); }
  .bundle.featured .sub { color: #C4C7CD; }
  .bundle.featured .swapline { color: #A9BBD3; }
  .bundle.featured .price s { color: #6E7178; }
  .bundle.featured .price .fine { color: #9A9EA6; }
  .bundle.featured .btn-dark { background: #fff; color: var(--ink); border-color: #fff; }
  .bundle.featured .btn-dark:hover { background: #E4E6EA; }
  .price-row .was { color: var(--faint); font-size: 20px; }
  .bundle-media.one { grid-template-columns: 1fr; }
  /* red corner ribbon; the card's rounded overflow clips its ends */
  .ribbon { position: absolute; top: 0; right: 0; width: 132px; height: 132px; overflow: hidden; z-index: 2; pointer-events: none; }
  .ribbon span {
    position: absolute; top: 27px; right: -42px; width: 172px; transform: rotate(45deg);
    background: #D92D20; color: #fff; text-align: center;
    font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase;
    padding: 7px 0; box-shadow: 0 6px 14px -6px rgba(0,0,0,.4);
  }
  .bundle .price em.save { font-style: normal; font-size: 13px; font-weight: 600; color: #D92D20; }
  .bundle.featured .price em.save { color: #FF7A6E; }
  .bundle.wide { grid-column: 1 / -1; }
  /* the full-width All-in-One: a letterbox crop of the group shot, kept on the robots */
  .bundle.wide .bundle-media.one { aspect-ratio: 21 / 9; overflow: hidden; }   /* hidden: else the 16:9 photo stretches the box back to 16:9 */
  .bundle.wide .bundle-media.one img { position: absolute; inset: 0; object-position: center 70%; }
  .bundle-media.four { grid-template-columns: repeat(4, 1fr); aspect-ratio: 32 / 9; }
  .bundle-media.four .swap { width: 42px; height: 42px; font-size: 18px; }
  .bundle-media.four .s1 { left: 25%; }
  .bundle-media.four .s3 { left: 75%; }
  .bundle.wide .bundle-body { flex-direction: row; align-items: flex-end; gap: 36px; padding: 30px 32px 32px; }
  .bundle.wide .wide-text { flex: 1; }
  .bundle.wide .price { margin: 0; }
  .bundle.wide .price .fine { margin-left: 4px; }
  .bundle.wide .btn { margin-top: 0; min-width: 200px; }

  /* ---------- pricing ---------- */
  .pricing { border-top: 1px solid var(--line); }
  .group-label { display: flex; align-items: center; gap: 14px; margin: 0 0 20px; }
  .group-label .pill { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--steel); background: #EEF2F7; border-radius: 999px; padding: 5px 10px; }
  .cards { display: grid; gap: 16px; }
  .cards.singles { grid-template-columns: repeat(4, 1fr); margin-bottom: 64px; }
  .cards.bundles { grid-template-columns: repeat(3, 1fr); }
  .card {
    position: relative; display: flex; flex-direction: column;
    border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden;
    transition: border-color .25s, transform .4s var(--ease), box-shadow .4s var(--ease);
  }
  .card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: 0 18px 40px -24px rgba(11,12,14,.25); }
  .card-media { aspect-ratio: 4 / 3.2; background: var(--soft); overflow: hidden; display: grid; }
  .card-media img { width: 100%; height: 100%; object-fit: cover; }
  .card-media.duo { grid-template-columns: 1fr 1fr; }
  .card-media.quad { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; }
  .card-media.quad img, .card-media.duo img { min-height: 0; }
  .card-body { padding: 24px 24px 26px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
  .card .num { font-family: var(--font-mono); font-size: 12px; color: var(--faint); }
  .card h4 { font-family: var(--font-display); font-size: 24px; font-weight: 600; letter-spacing: -0.02em; }
  .card .sub { font-size: 14px; color: var(--mute); }
  .card .price { display: flex; align-items: baseline; gap: 10px; margin: 14px 0 4px; }
  .card .price b { font-family: var(--font-display); font-size: 32px; font-weight: 600; letter-spacing: -0.03em; }
  .card .price s { color: var(--faint); font-size: 16px; }
  .card .fine { font-size: 13px; color: var(--mute); min-height: 20px; }
  .card ul { list-style: none; margin: 14px 0 22px; font-size: 14px; color: var(--ink-2); }
  .card li { padding: 7px 0 7px 22px; position: relative; border-top: 1px solid var(--line); }
  .card li::before { content: ''; position: absolute; left: 2px; top: 15px; width: 10px; height: 6px; border-left: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); transform: rotate(-45deg); }
  .card .btn { margin-top: auto; justify-content: center; }
  .card.featured { background: var(--ink); color: #fff; border-color: var(--ink); }
  .card.featured .sub, .card.featured .fine, .card.featured .num { color: #9A9EA6; }
  .card.featured ul { color: #D7D9DE; }
  .card.featured li { border-top-color: rgba(255,255,255,.12); }
  .card.featured li::before { border-color: #fff; }
  .card.featured .price s { color: #6E7178; }
  .card.featured .btn-dark { background: #fff; color: var(--ink); border-color: #fff; }
  .card.featured .btn-dark:hover { background: #E4E6EA; }
  .card.featured .card-media { background: #1B1D21; }
  .badge { position: absolute; top: 14px; right: 14px; z-index: 2; font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; background: #fff; color: var(--ink); padding: 6px 10px; border-radius: 999px; box-shadow: 0 0 0 1px var(--line); }

  .terms-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 64px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
  .terms-strip div { padding: 26px 24px; border-left: 1px solid var(--line); }
  .terms-strip div:first-child { border-left: none; }
  .terms-strip b { display: block; font-family: var(--font-display); font-size: 19px; font-weight: 600; letter-spacing: -0.01em; margin-bottom: 6px; }
  .terms-strip span { font-size: 14px; color: var(--mute); }
  .pricing-foot { margin-top: 22px; font-size: 14px; color: var(--mute); }
  .pricing-foot a { color: var(--ink); }

  /* ---------- sensor pack ---------- */
  .sensor-teaser { border-top: 1px solid var(--line); }
  .sensor-teaser-grid {
    display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: center; gap: clamp(32px, 5vw, 72px);
  }
  .sensor-teaser h2 { margin: 18px 0 24px; }
  .sensor-teaser .lead { margin-bottom: 32px; }
  .sensor-teaser img {
    width: 100%; aspect-ratio: 3 / 2; object-fit: cover;
    border-radius: var(--radius); background: var(--soft);
  }

  /* ---------- platform ---------- */
  .platform { background: var(--soft); }
  .pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .pillar { background: #fff; border-radius: var(--radius); padding: 34px 30px 36px; }
  .pillar .k { font-family: var(--font-mono); font-size: 12px; color: var(--faint); margin-bottom: 40px; }
  .pillar h3 { font-size: 26px; margin-bottom: 12px; letter-spacing: -0.02em; }
  .pillar p { color: var(--ink-2); font-size: 15px; margin-bottom: 22px; }
  .chips { display: flex; flex-wrap: wrap; gap: 6px; }
  .chips span { font-family: var(--font-mono); font-size: 11px; letter-spacing: .04em; color: var(--ink-2); border: 1px solid var(--line); border-radius: 999px; padding: 5px 10px; }

  .labs { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
  .labs-card { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 44px 40px; display: flex; flex-direction: column; justify-content: space-between; gap: 40px; }
  .labs-card h3 { font-size: clamp(32px, 3.2vw, 44px); }
  .labs-card p { color: #C4C7CD; max-width: 40ch; margin-top: 16px; }
  .labs-card .btn-dark { background: #fff; color: var(--ink); border-color: #fff; align-self: flex-start; }
  .labs-card .btn-dark:hover { background: #E4E6EA; }
  .labs-list { background: #fff; border-radius: var(--radius); padding: 18px 40px; }
  .labs-list div { display: grid; grid-template-columns: 34px 1fr; gap: 10px; padding: 22px 0; border-bottom: 1px solid var(--line); }
  .labs-list div:last-child { border-bottom: none; }
  .labs-list .k { font-family: var(--font-mono); font-size: 12px; color: var(--faint); padding-top: 3px; }
  .labs-list b { display: block; font-weight: 600; margin-bottom: 2px; }
  .labs-list span { color: var(--mute); font-size: 14px; }

  /* ---------- final cta ---------- */
  .final { padding: 120px 0 140px; text-align: center; }
  .final h2 { font-size: clamp(48px, 7vw, 104px); letter-spacing: -0.045em; margin: 18px 0 22px; }
  .final .lead { margin: 0 auto 40px; }
  .final .hero-ctas { justify-content: center; }

  /* ---------- footer ---------- */
  footer { border-top: 1px solid var(--line); padding: 64px 0 40px; font-size: 14px; }
  .foot-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; margin-bottom: 56px; }
  .foot-grid h5 { font-family: var(--font-mono); font-size: 11px; font-weight: 400; letter-spacing: .1em; text-transform: uppercase; color: var(--mute); margin-bottom: 16px; }
  .foot-grid ul { list-style: none; }
  .foot-grid li { margin-bottom: 10px; }
  .foot-grid a { text-decoration: none; color: var(--ink-2); }
  .foot-grid a:hover { color: var(--ink); }
  .foot-grid p { color: var(--mute); max-width: 32ch; margin-top: 16px; }
  .foot-grid .backed { margin-top: 22px; color: var(--mute); }
  .foot-bottom { display: flex; justify-content: space-between; gap: 20px; color: var(--mute); font-size: 13px; border-top: 1px solid var(--line); padding-top: 24px; }

  /* ---------- reveal ---------- */
  .reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
  .reveal.in { opacity: 1; transform: none; }
  @media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .stage img { transition: none; }
    html { scroll-behavior: auto; }
  }

  /* ---------- responsive ---------- */
  /* the product menus need the room: the deposit note goes first (the hero
     says it too), then the labs link, so the product links fit */
  @media (max-width: 1760px) { .nav-note { display: none; } }
  @media (max-width: 1360px) { .nav-links { gap: 34px; } }
  @media (max-width: 1280px) { .nav-links > a:not(.nav-sensor, .nav-team) { display: none; } }
  @media (max-width: 1100px) {
    .cards.singles { grid-template-columns: repeat(2, 1fr); }
    .terms-strip { grid-template-columns: repeat(2, 1fr); }
    .terms-strip div:nth-child(3) { border-left: none; }
    .terms-strip div:nth-child(n+3) { border-top: 1px solid var(--line); }
    .nav-note { display: none; }
  }
  @media (min-width: 901px) and (max-width: 1100px) {
    nav { padding-inline: 22px; column-gap: 18px; }
    nav .brand img { height: 15px; }
    .nav-links { gap: 20px; }
    .nav-right { gap: 8px; }
    nav .btn { padding-inline: 13px; }
  }
  @media (max-width: 900px) {
    .wrap { padding: 0 20px; }
    nav { padding: 12px 20px; grid-template-columns: minmax(0, 1fr) auto; column-gap: 16px; }
    nav .brand img { max-width: 100%; object-fit: contain; object-position: left; }
    .nav-links { display: none; }
    .sec { padding: 96px 0; }
    .sec-head { flex-direction: column; align-items: flex-start; gap: 20px; margin-bottom: 40px; }
    .hero { padding-top: 104px; }
    .hero-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero-page-links { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-bottom: 20px; }
    .hero-visual { width: 100%; min-width: 0; }
    .ticker { margin-top: 48px; }
    .ticker .wrap { grid-template-columns: repeat(2, 1fr); }
    .ticker div.cell:nth-child(3) { border-left: none; padding-left: 0; }
    .ticker div.cell:nth-child(n+3) { border-top: 1px solid var(--line); }
    .ticker .big { font-size: 24px; }
    .transform { height: 300vh; }
    .transform-grid { grid-template-columns: 1fr; gap: 12px; }
    .transform h2 { margin: 12px 0 16px; font-size: 38px; }
    .steps { min-height: 150px; order: 2; }
    .step h3 { font-size: 22px; }
    .progress { margin-top: 8px; }

    .chapters { grid-template-columns: repeat(5, minmax(108px, 1fr)); overflow-x: auto; scrollbar-width: none; }
    .chapters button { padding: 12px 12px 14px; }
    .player { border-radius: 18px; }

    .robot { grid-template-columns: 1fr; gap: 36px; }
    .specs li { grid-template-columns: 100px 1fr; }
    .cards.bundles, .bundle-grid { grid-template-columns: 1fr; }
    .bundle-media.four { grid-template-columns: repeat(2, 1fr); aspect-ratio: 1; }
    .bundle-media.four .s1, .bundle-media.four .s3 { display: none; }
    .bundle.wide .bundle-body { flex-direction: column; align-items: stretch; gap: 10px; padding: 22px 20px 24px; }
    .bundle.wide .bundle-media.one { aspect-ratio: 16 / 9; }
    .bundle.wide .price { margin: 8px 0 16px; }
    .bundle-body { padding: 22px 20px 24px; }

    .sensor-teaser-grid, .pillars, .labs { grid-template-columns: 1fr; }

    .labs-card, .labs-list { padding-left: 26px; padding-right: 26px; }
    .foot-grid { grid-template-columns: 1fr 1fr; }
    .foot-grid > div:first-child { grid-column: 1 / -1; }
  }
  @media (max-width: 600px) {
    .cards.singles { grid-template-columns: 1fr; }
    .terms-strip { grid-template-columns: 1fr; }
    .terms-strip div { border-left: none !important; border-top: 1px solid var(--line); }
    .terms-strip div:first-child { border-top: none; }
    .hero-ctas .btn { flex: 1 1 auto; justify-content: center; }
    .foot-bottom { flex-direction: column; }
    nav { padding-inline: 16px; column-gap: 12px; }
    nav .btn { padding: 8px 12px; font-size: 12px; }
    .nav-right { gap: 8px; }
    .nav-cart { padding: 7px 8px; gap: 5px; font-size: 12px; }
  }

/* ANTLAB brand assets preserve the original wordmark proportions. */
.brand img { height: 19px; }
.foot-logo img { height: 40px; }
.preview-note { color: var(--mute); font-size: 11px; margin-top: 48px; max-width: 65ch; }
:focus-visible { outline: 2px solid #4C6485; outline-offset: 5px; }
dialog { position: fixed; margin: auto; width: min(520px, calc(100% - 40px)); padding: 48px; border: 1px solid var(--line); border-radius: 24px; background: #fff; color: var(--ink); }
dialog::backdrop { background: rgba(11,12,14,.34); backdrop-filter: blur(5px); }
dialog h2 { font-size: 48px; margin: 24px 0; }
dialog p { margin: 16px 0; color: var(--ink-2); }
dialog .contact-small { font-size: 13px; color: var(--mute); }
dialog .dialog-done { margin-top: 16px; cursor: pointer; }
.dialog-close { position: absolute; right: 18px; top: 12px; border: 0; background: none; font-size: 28px; cursor: pointer; color: var(--ink); }
@media(max-width:600px) { dialog { padding: 32px; } dialog h2 { font-size: 40px; } }