/* ============================================================
   Compact Series — Apple-style dark glassmorphism
   ============================================================ */

@font-face {
  font-family: "Coolvetica";
  src: url("assets/fonts/Coolvetica-Rg.otf") format("opentype");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --edge: clamp(16px, 4.2vw, 48px);
  --font-ui: "Inter", system-ui, -apple-system, sans-serif;
  --font-display: "Coolvetica", "Inter", system-ui, sans-serif;
  --white: #ffffff;
  --ink: #0c1014;
  --brand: #1b74b8;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-hover: cubic-bezier(0.25, 0.8, 0.25, 1);

  /* dark frosted glass */
  --glass-bg: linear-gradient(
    155deg,
    rgba(255, 255, 255, 0.14) 0%,
    rgba(255, 255, 255, 0.05) 48%,
    rgba(255, 255, 255, 0.08) 100%
  );
  --glass-border: 1px solid rgba(255, 255, 255, 0.22);
  --glass-shadow:
    0 12px 40px rgba(0, 0, 0, 0.28),
    0 2px 8px rgba(0, 0, 0, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04);
  --glass-blur: blur(28px) saturate(1.4);
  --glass-radius: 24px;

  --glass-dark-bg: rgba(8, 12, 16, 0.42);
  --glass-dark-border: 1px solid rgba(255, 255, 255, 0.16);
  --glass-dark-shadow:
    0 14px 44px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);

  --glass-white-bg: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.82) 0%,
    rgba(255, 255, 255, 0.62) 100%
  );
  --glass-white-border: 1px solid rgba(255, 255, 255, 0.7);
  --glass-white-shadow:
    0 10px 32px rgba(0, 0, 0, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  overflow: hidden;
  background: #05070a;
  color: var(--white);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

button { cursor: pointer; border: none; background: none; color: inherit; }
a.btn { text-decoration: none; }
a.btn-glass-white,
a.btn-glass-white:visited,
a.btn-glass-white:hover,
a.btn-glass-white:active {
  color: var(--ink);
}
a.btn-glass-dark,
a.btn-glass-dark:visited,
a.btn-glass-dark:hover,
a.btn-glass-dark:active {
  color: var(--white);
}

/* ---------- background video + scrim ---------- */

#bg-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  object-fit: cover;
  object-position: center 42%;
  z-index: 0;
  opacity: 1;
  background: #05070a url("assets/hero-poster.jpg") center 42% / cover no-repeat;
  transition: filter 0.8s ease;
  filter: none;
}

#bg-video.is-ready { filter: none; }

.scrim {
  position: fixed;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to bottom,
      rgba(0, 0, 0, 0.28) 0%,
      rgba(0, 0, 0, 0.06) 18%,
      transparent 40%,
      transparent 62%,
      rgba(0, 0, 0, 0.22) 82%,
      rgba(0, 0, 0, 0.38) 100%);
  pointer-events: none;
}

/* ---------- shared glass panel ---------- */

.glass-panel {
  background: var(--glass-bg);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--glass-radius);
  box-shadow: var(--glass-shadow);
  transition:
    transform 0.28s var(--ease-hover),
    box-shadow 0.28s var(--ease-hover),
    background 0.28s var(--ease-hover),
    border-color 0.28s var(--ease-hover);
}

.glass-panel:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.34);
  box-shadow:
    0 18px 52px rgba(0, 0, 0, 0.32),
    0 4px 12px rgba(0, 0, 0, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.36);
}

.callout.glass-panel:hover {
  border-color: rgba(255, 255, 255, 0.28);
}

/* ---------- header ---------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px var(--edge);
}

@media (max-width: 900px) {
  .site-header {
    top: 0;
    padding: max(14px, env(safe-area-inset-top, 0px)) var(--edge) 10px;
  }
}

.logo img {
  height: 34px;
  display: block;
  filter: brightness(0) invert(1) drop-shadow(0 2px 10px rgba(0, 0, 0, 0.35));
}

.site-nav {
  display: flex;
  align-items: center;
}

/* ---------- buttons ---------- */

.btn {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 14px 26px;
  white-space: nowrap;
  transition:
    transform 0.28s var(--ease-hover),
    background 0.28s var(--ease-hover),
    box-shadow 0.28s var(--ease-hover),
    border-color 0.28s var(--ease-hover),
    color 0.28s var(--ease-hover);
}

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-glass-dark {
  background: var(--glass-dark-bg);
  color: var(--white);
  -webkit-backdrop-filter: blur(22px) saturate(1.35);
  backdrop-filter: blur(22px) saturate(1.35);
  border: var(--glass-dark-border);
  box-shadow: var(--glass-dark-shadow);
}
.btn-glass-dark:hover {
  background: rgba(8, 12, 16, 0.58);
  border-color: rgba(255, 255, 255, 0.28);
  box-shadow:
    0 16px 44px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.btn-glass-white {
  background-color: rgba(255, 255, 255, 0.9);
  background-image: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.95) 0%,
    rgba(255, 255, 255, 0.72) 100%
  );
  color: var(--ink);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  backdrop-filter: blur(24px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: var(--glass-white-shadow);
}
.btn-glass-white:hover {
  background-color: #fff;
  background-image: linear-gradient(
    160deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(255, 255, 255, 0.86) 100%
  );
  transform: translateY(-2px);
  box-shadow:
    0 14px 40px rgba(0, 0, 0, 0.22),
    0 0 0 1px rgba(255, 255, 255, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 1);
}

/* nav: Inter sentence case + arrow-inside-circle */
.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-transform: none;
  padding: 6px 6px 6px 18px;
}

.nav-short { display: none; }

.nav-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(12, 16, 20, 0.92);
  color: var(--white);
  display: grid;
  place-items: center;
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  transition: transform 0.28s var(--ease-hover), background 0.28s;
}

.btn-nav:hover .nav-arrow {
  transform: translate(1px, -1px);
  background: #000;
}

.btn-explore {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px 14px 24px;
}

.cta-arrow {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: grid;
  place-items: center;
  transition: transform 0.28s var(--ease-hover), background 0.28s;
}

.btn-explore:hover .cta-arrow {
  transform: translate(1px, -1px);
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}

/* ---------- shared type ---------- */

.label {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.78);
}

.headline {
  font-weight: 800;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  text-shadow: 0 4px 28px rgba(0, 0, 0, 0.35);
}

.headline span { display: block; }

/* ---------- panels ---------- */

.panel {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  z-index: 10;
  padding: calc(90px) var(--edge) var(--edge);
  visibility: hidden;
  pointer-events: none;
}

.panel.is-active {
  visibility: visible;
  pointer-events: auto;
}

.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
  transition-delay: var(--d, 0s);
}

.panel.is-active .reveal {
  opacity: 1;
  transform: translateY(0);
}

.panel.is-leaving .reveal {
  opacity: 0;
  transform: translateY(-24px);
  transition-duration: 0.35s;
  transition-delay: 0s;
}

.panel .reveal:nth-of-type(1) { --d: 0.15s; }
.panel .reveal:nth-of-type(2) { --d: 0.25s; }
.panel .reveal:nth-of-type(3) { --d: 0.35s; }
.panel .reveal:nth-of-type(4) { --d: 0.45s; }

/* ============ SECTION 1 — HERO ============ */

.panel-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: max(28px, env(safe-area-inset-bottom, 0px));
}

.hero-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: min(100%, 520px);
  container-type: inline-size;
  container-name: hero;
}

.hero-titles {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(16px, 4.2vw, 24px);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.88);
  text-shadow:
    0 2px 16px rgba(0, 0, 0, 0.4);
}

.hero-title {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: clamp(42px, 11vw, 120px);
  line-height: 0.95;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  white-space: nowrap;
  text-shadow:
    0 6px 40px rgba(0, 0, 0, 0.45);
}

.hero-ctas {
  display: flex;
  gap: 12px;
  margin-top: clamp(20px, 4vh, 36px);
}

.hero-stack .scroll-hint { margin-top: clamp(18px, 3vh, 28px); }

.scroll-hint {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  animation: hint-bob 2.4s ease-in-out infinite;
}

@keyframes hint-bob {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50%      { transform: translateY(6px); opacity: 0.95; }
}

/* ============ SECTION 2 — TECHNOLOGY ============ */

.panel-tech {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.tech-left {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 52%;
}

.feature-card {
  align-self: center;
  width: min(360px, 44vw);
  padding: 10px 22px;
  max-height: 80vh;
  overflow: hidden;
  transition:
    max-height 0.45s var(--ease-out),
    opacity 0.35s var(--ease-out),
    padding 0.35s var(--ease-out),
    border-width 0.35s var(--ease-out),
    box-shadow 0.35s var(--ease-out);
}

.tech-features {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  align-self: center;
}

.tech-collapse {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  place-items: center;
  color: var(--white);
  background: rgba(8, 12, 16, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.22);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  backdrop-filter: blur(18px) saturate(1.3);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  transition:
    transform 0.28s var(--ease-hover),
    background 0.28s var(--ease-hover),
    border-color 0.28s var(--ease-hover);
}

.tech-collapse svg {
  transition: transform 0.35s var(--ease-out);
}

.tech-collapse:hover {
  background: rgba(8, 12, 16, 0.58);
  border-color: rgba(255, 255, 255, 0.34);
  transform: translateY(-1px);
}

.feature {
  padding: 4px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.feature:last-child { border-bottom: none; }

.feature-head {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 14px 2px;
  text-align: left;
  cursor: pointer;
  color: inherit;
  border-radius: 8px;
  transition: opacity 0.25s var(--ease-hover);
}

.feature-head:hover { opacity: 0.85; }

.feature-num {
  flex: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(145deg, #2a8fd0, #1563a0);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  display: grid;
  place-items: center;
  box-shadow:
    0 4px 14px rgba(27, 116, 184, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transition: transform 0.25s var(--ease-hover), box-shadow 0.25s var(--ease-hover);
}

.feature.is-open .feature-num,
.feature-head:hover .feature-num {
  transform: scale(1.06);
  box-shadow:
    0 6px 18px rgba(27, 116, 184, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.feature-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.feature-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s var(--ease-out);
}

.feature-body > p {
  overflow: hidden;
  min-height: 0;
  margin: 0;
  padding: 0 2px 0 52px;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: rgba(255, 255, 255, 0.82);
  opacity: 0;
  transition:
    opacity 0.28s var(--ease-out),
    padding-bottom 0.35s var(--ease-out);
}

.feature.is-open .feature-body {
  grid-template-rows: 1fr;
}

.feature.is-open .feature-body > p {
  opacity: 1;
  padding-bottom: 14px;
}

/* ============ SECTION 3 — EXPLODED VIEW ============ */

.gallery-anchor {
  position: absolute;
  left: var(--edge);
  bottom: var(--edge);
  top: unset;
  right: auto;
  z-index: 5;
  margin: 0;
  transform: none;
}

.gallery-card {
  width: clamp(280px, 28vw, 360px);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  border-radius: 14px;
  display: block;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hotspot-layer {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  /* left/top/width/height synced to the video object-fit box in script.js */
}

.hotspot-group {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
  pointer-events: auto;
  z-index: 1;
}

.hotspot-group.is-open { z-index: 4; }

.hotspot {
  position: relative;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  cursor: pointer;
  color: inherit;
  background: transparent;
  border: none;
  padding: 0;
}

.hotspot-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--white);
  box-shadow:
    0 0 0 6px rgba(255, 255, 255, 0.22),
    0 0 18px rgba(255, 255, 255, 0.55),
    0 2px 8px rgba(0, 0, 0, 0.25);
  animation: hotspot-pulse 2.2s ease-in-out infinite;
  transition: transform 0.25s var(--ease-hover), box-shadow 0.25s var(--ease-hover);
}

.hotspot:hover .hotspot-dot,
.hotspot-group.is-open .hotspot-dot,
.hotspot-group:focus-within .hotspot-dot {
  transform: scale(1.15);
  box-shadow:
    0 0 0 8px rgba(255, 255, 255, 0.28),
    0 0 24px rgba(255, 255, 255, 0.7),
    0 2px 10px rgba(0, 0, 0, 0.28);
}

@keyframes hotspot-pulse {
  0%, 100% { box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.2), 0 0 16px rgba(255, 255, 255, 0.45), 0 2px 8px rgba(0, 0, 0, 0.25); }
  50% { box-shadow: 0 0 0 10px rgba(255, 255, 255, 0.12), 0 0 26px rgba(255, 255, 255, 0.65), 0 2px 8px rgba(0, 0, 0, 0.25); }
}

.callout {
  position: absolute;
  left: calc(100% + 16px);
  top: 50%;
  transform: translate(8px, -50%);
  /* Match reference: portrait frosted card, title on top, photo below */
  width: 260px;
  padding: 24px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  z-index: 2;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  border-radius: 32px;
  background: rgba(40, 48, 42, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow:
    0 18px 50px rgba(0, 0, 0, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.28);
  -webkit-backdrop-filter: blur(28px) saturate(1.25);
  backdrop-filter: blur(28px) saturate(1.25);
  transition:
    opacity 0.28s var(--ease-out),
    transform 0.28s var(--ease-out),
    visibility 0.28s;
}

/* Hover = preview; .is-open = pinned by click */
.hotspot-group:hover:not(.is-hover-locked) .callout,
.hotspot-group.is-open .callout {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(0, -50%);
}

.callout-title {
  flex: none;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0;
  padding: 0;
  text-align: left;
}

.callout img {
  width: 100%;
  aspect-ratio: 4 / 3;
  height: auto;
  object-fit: cover;
  object-position: center;
  border-radius: 20px;
  display: block;
  flex: none;
}

.callout-nozzle,
.callout-pump,
.callout-digester,
.callout-internal-pump {
  width: 260px;
}

.arch-cta {
  position: absolute;
  right: var(--edge);
  bottom: var(--edge);
  z-index: 6;
}

/* ---------- responsive — mobile 9:16 composition ---------- */

@media (max-width: 900px) {
  .panel-hero {
    /* leave the mid-frame open for the product */
    justify-content: flex-end;
    padding-top: calc(120px + env(safe-area-inset-top, 0px));
  }

  .hero-stack {
    width: 100%;
    max-width: 100%;
    padding-inline: 0;
  }

  .hero-titles {
    width: 100%;
  }

  .hero-eyebrow {
    font-size: clamp(13px, 3.4vw, 16px);
    letter-spacing: 0.08em;
  }

  .hero-title {
    font-size: 8.2cqw;
    letter-spacing: -0.05em;
    max-width: 100%;
  }

  .site-header {
    gap: 8px;
  }

  .logo {
    flex: none;
    min-width: 0;
    max-width: 42%;
    overflow: visible;
  }

  .logo img {
    height: 20px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    object-position: left center;
  }

  .site-nav {
    flex: none;
    margin-left: auto;
  }

  .site-nav .btn-nav {
    font-size: 12px;
    padding: 4px 4px 4px 12px;
    gap: 6px;
  }

  .nav-full { display: inline; }
  .nav-short { display: none; }

  .nav-arrow { width: 24px; height: 24px; flex: none; }

  .panel-tech {
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
    gap: 20px;
    padding-top: calc(64px + env(safe-area-inset-top, 0px));
    padding-bottom: max(24px, env(safe-area-inset-bottom));
  }

  .tech-left {
    max-width: 100%;
    padding-top: 0;
  }

  .tech-features {
    align-self: stretch;
    width: 100%;
    gap: 8px;
  }

  .feature-card {
    align-self: stretch;
    width: auto;
    padding: 6px 18px;
  }

  .feature-head { padding: 12px 2px; gap: 12px; }
  .feature-title { font-size: 15px; }
  .feature-num { width: 34px; height: 34px; }
  .feature-body > p {
    font-size: 13px;
    padding-left: 46px;
  }
  .feature.is-open .feature-body > p { padding-bottom: 12px; }

  .gallery-anchor {
    display: block;
    left: var(--edge);
    top: calc(56px + env(safe-area-inset-top, 0px));
    bottom: auto;
  }

  .gallery-card {
    width: clamp(118px, 32vw, 148px);
    padding: 3px;
    border-radius: 10px;
    border-width: 1px;
  }

  .gallery-card img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: 7px;
    box-shadow: none;
  }

  .arch-cta {
    left: 0;
    right: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    bottom: max(48px, calc(28px + env(safe-area-inset-bottom, 0px)));
  }

  .callout {
    width: 190px;
    padding: 16px 14px 14px;
    border-radius: 22px;
    gap: 10px;
  }
  .callout-title { font-size: 15px; }
  .callout img { border-radius: 14px; }
  .callout-nozzle,
  .callout-pump,
  .callout-digester,
  .callout-internal-pump { width: 190px; }

  /* Right-side hotspots — open callout to the left on phones */
  .hotspot-group-pump .callout,
  .hotspot-group-nozzle .callout {
    left: auto;
    right: calc(100% + 12px);
    transform: translate(-8px, -50%);
  }

  .hotspot-group-pump:hover:not(.is-hover-locked) .callout,
  .hotspot-group-pump.is-open .callout,
  .hotspot-group-nozzle:hover:not(.is-hover-locked) .callout,
  .hotspot-group-nozzle.is-open .callout {
    transform: translate(0, -50%);
  }

  /* Clear the top-left gallery card on phones */
  .hotspot-group-pump:hover:not(.is-hover-locked) .callout,
  .hotspot-group-pump.is-open .callout {
    top: calc(50% + 110px);
    transform: translate(0, -50%);
  }

  /* Internal Pump Chamber — open below the dot so it stays on-screen */
  .hotspot-group-internal-pump .callout {
    left: 50%;
    right: auto;
    top: calc(100% + 10px);
    transform: translate(-50%, 8px);
  }

  .hotspot-group-internal-pump:hover:not(.is-hover-locked) .callout,
  .hotspot-group-internal-pump.is-open .callout {
    transform: translate(-50%, 0);
  }

  .btn { padding: 12px 18px; font-size: 11px; }

  .btn-explore {
    padding: 12px 12px 12px 20px;
  }
}

@media (max-width: 640px) {
  :root { --edge: 14px; }

  .logo img {
    height: 18px;
  }

  .nav-full { display: none; }
  .nav-short { display: inline; }

  .cta-arrow { width: 26px; height: 26px; }

  /* Collapse control — phones only */
  .tech-collapse {
    display: grid;
  }

  .panel-tech.is-collapsed .tech-collapse svg {
    transform: rotate(180deg);
  }

  .panel-tech.is-collapsed .feature-card {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin: 0;
    border-width: 0;
    overflow: hidden;
    pointer-events: none;
    box-shadow: none;
  }

  .panel-tech.is-collapsed .tech-features {
    gap: 0;
  }

  .arch-cta {
    bottom: max(64px, calc(44px + env(safe-area-inset-bottom, 0px)));
  }

  .callout {
    width: 168px;
    padding: 14px 12px 12px;
    border-radius: 20px;
    gap: 8px;
  }
  .callout-title { font-size: 13px; }
  .callout img { border-radius: 12px; aspect-ratio: 4 / 3; }
  .callout-nozzle,
  .callout-pump,
  .callout-digester,
  .callout-internal-pump { width: 168px; }
}

/* Prefer taller phone frames — push titles lower, product owns center */
@media (max-width: 640px) and (min-aspect-ratio: 9/19) {
  .panel-hero { padding-bottom: max(40px, env(safe-area-inset-bottom)); }
  .hero-ctas { margin-top: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-hint { animation: none; }
  .hotspot-dot { animation: none; }
}