/* ============================================================
   Pulse — Whoop-inspired fitness intelligence style system
   Refs: WHOOP.com, Garmin India, Bevel (Mobbin)
   Reusable template — paraphrase for other verticals
   ============================================================ */

:root {
  --black: #000000;
  --gray-950: #0a0a0a;
  --gray-900: #111111;
  --gray-800: #1a1a1a;
  --gray-200: #e8e8e8;
  --gray-100: #f2f2f2;
  --white: #ffffff;
  --pulse-violet: #5B4EFF;
  --pulse-violet-dark: #4338CA;
  --strain: #FF6700;
  --recovery: #00DC82;
  --sleep: #0091FF;
  --font: "Inter", system-ui, sans-serif;
  --nav-h: 56px;
  --announce-h: 36px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(91, 78, 255, 0.4); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }

/* Announcement — Whoop purple bar */
.announce {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 300;
  height: var(--announce-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(90deg, var(--pulse-violet-dark), var(--pulse-violet));
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* Nav — Whoop uppercase black */
.nav {
  position: fixed;
  top: var(--announce-h);
  left: 0;
  right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(16px, 4vw, 32px);
  background: var(--black);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.logo {
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: 0.12em;
}

.nav-links { display: flex; gap: clamp(16px, 3vw, 32px); }

.nav-links a {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--white); }

.nav.nav-scrolled {
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span { display: block; width: 20px; height: 1.5px; background: var(--white); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 28px;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}

.btn:hover { transform: scale(1.02); }

.btn-join {
  background: linear-gradient(135deg, var(--pulse-violet-dark), var(--pulse-violet));
  color: var(--white);
}

.btn-sm { padding: 10px 20px; font-size: 0.6875rem; }

.btn-hero {
  background: var(--white);
  color: var(--black);
  padding: 16px 40px;
  font-size: 0.8125rem;
}

.btn-dark {
  background: var(--black);
  color: var(--white);
  gap: 10px;
}

.btn-dark span::before { content: ""; }

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--white);
  width: 100%;
}

.kicker {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pulse-violet);
  margin-bottom: 12px;
}

.kicker--dark { color: var(--black); }

.h2 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 16px;
}

.h2--light { color: var(--white); }

.body {
  font-size: 1.0625rem;
  color: rgba(255,255,255,0.65);
  max-width: 48ch;
}

.body--light { color: rgba(255,255,255,0.6); }
.body.center { margin-inline: auto; text-align: center; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.visible { opacity: 1; transform: none; }

/* ── Hero — Whoop black macro ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--announce-h) + var(--nav-h) + 48px) 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, #1a1520 0%, var(--black) 70%);
}

.hero-band {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 55% 45%, rgba(91,78,255,0.15) 0%, transparent 40%),
    linear-gradient(135deg, transparent 30%, rgba(255,255,255,0.03) 50%, transparent 70%);
}

.hero-band::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(480px, 70vw);
  height: min(200px, 30vw);
  background: linear-gradient(180deg, #222 0%, #0a0a0a 40%, #111 100%);
  border-radius: 100px;
  box-shadow:
    0 40px 80px rgba(0,0,0,0.8),
    inset 0 2px 0 rgba(255,255,255,0.08),
    inset 0 -20px 40px rgba(0,0,0,0.5);
}

.hero-band::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: #0d0d0d;
  border-radius: 50%;
  border: 2px solid #333;
  z-index: 2;
  box-shadow: inset 0 0 20px rgba(91,78,255,0.3);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 32px;
}

/* ── Metrics — Bevel three columns ── */
.metrics {
  background: var(--white);
  color: var(--black);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
}

.metrics-head {
  max-width: 1100px;
  margin: 0 auto 48px;
  text-align: center;
}

.metrics-head .h2 { color: var(--black); }
.metrics-head .body { color: #666; margin-inline: auto; }

.metrics-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.metric-card {
  background: linear-gradient(180deg, #eef4ff 0%, #f8faff 100%);
  border-radius: 16px;
  padding: 28px 24px;
  transition: transform 0.35s var(--ease), box-shadow 0.35s;
}

.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.metric-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.metric-card p {
  font-size: 0.875rem;
  color: #555;
  margin-bottom: 20px;
  line-height: 1.5;
}

.phone-mock {
  background: #111;
  border-radius: 24px;
  padding: 12px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.2);
}

.mock-screen {
  background: #fafafa;
  border-radius: 16px;
  padding: 16px;
  min-height: 180px;
  position: relative;
}

.mock-strain { background: #fff; }
.mock-sleep { background: #0d1117; color: #fff; }
.mock-recovery {
  background: linear-gradient(180deg, #87CEEB 0%, #e8f4fc 40%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.mock-score {
  font-size: 2rem;
  font-weight: 800;
  color: var(--strain);
}

.mock-score--recovery {
  position: absolute;
  font-size: 1.25rem;
  color: var(--black);
}

.mock-chart { width: 100%; margin-top: 8px; }

.sleep-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 80px;
  margin-bottom: 12px;
}

.sleep-bars span {
  flex: 1;
  border-radius: 2px;
  min-height: 4px;
}

.mock-sleep-need {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
}

.recovery-ring { width: 100px; height: 100px; }

/* ── Dashboard — live demo ── */
.dashboard {
  background: var(--gray-900);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
  border-block: 1px solid rgba(255,255,255,0.06);
}

.dashboard-inner {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.dashboard-rings {
  display: flex;
  justify-content: center;
  gap: clamp(24px, 5vw, 48px);
  margin: 40px 0;
  flex-wrap: wrap;
}

.ring-wrap {
  position: relative;
  width: 120px;
  height: 120px;
}

.ring-wrap svg { width: 100%; height: 100%; }

.ring-val {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
}

.ring-label {
  display: block;
  margin-top: 8px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}

.ring-strain .ring-val { color: var(--strain); }
.ring-recovery .ring-val { color: var(--recovery); }
.ring-sleep .ring-val { color: var(--sleep); }

.dashboard-sliders {
  max-width: 400px;
  margin: 0 auto;
  text-align: left;
}

.dashboard-sliders label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
}

.dashboard-sliders input[type="range"] {
  accent-color: var(--pulse-violet);
  cursor: pointer;
}

.dashboard-readout {
  margin-top: 20px;
  padding: 16px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
  font-size: 0.9375rem;
  color: var(--recovery);
  text-align: center;
}

/* ── Different — Whoop product ── */
.different {
  background: var(--black);
  padding-top: clamp(64px, 10vw, 100px);
}

.different-head {
  padding: 0 clamp(16px, 4vw, 32px) 48px;
}

.different-head .h2 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  max-width: 900px;
}

.different-product {
  background: var(--gray-200);
  padding: clamp(64px, 12vw, 120px) 24px;
  text-align: center;
}

.product-visual {
  margin-bottom: 32px;
  perspective: 800px;
}

.band-3d {
  display: inline-block;
  transform: rotateX(12deg) rotateY(-8deg);
  transition: transform 0.4s var(--ease);
}

.product-visual:hover .band-3d {
  transform: rotateX(8deg) rotateY(8deg) scale(1.05);
}

.band-body {
  width: min(360px, 80vw);
  height: 80px;
  background: linear-gradient(180deg, #2a2a2a, #0a0a0a);
  border-radius: 40px;
  box-shadow: 0 24px 48px rgba(0,0,0,0.3);
}

.band-sensor {
  width: 64px;
  height: 64px;
  margin: -72px auto 0;
  background: #111;
  border-radius: 50%;
  border: 3px solid #333;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--pulse-violet);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.different-product .btn-hero { color: var(--black); }

/* ── Sports — Garmin grid ── */
.sports {
  background: var(--white);
  color: var(--black);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
}

.sports-head { max-width: 600px; margin-bottom: 32px; }
.sports-head .body { color: #666; }

.sport-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 12px;
  max-width: 1100px;
  margin-bottom: 24px;
}

.sport-chip {
  padding: 16px 12px;
  border: 1px solid #ddd;
  border-radius: 12px;
  background: var(--white);
  text-align: center;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 600;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.sport-chip:hover { transform: translateY(-2px); }

.sport-chip.is-active {
  border-color: var(--black);
  background: var(--black);
  color: var(--white);
}

.sport-chip span { display: block; font-size: 1.5rem; margin-bottom: 6px; }

.sport-detail {
  max-width: 1100px;
  padding: 24px;
  background: var(--gray-100);
  border-radius: 12px;
}

.sport-detail h3 { font-size: 1.25rem; margin-bottom: 12px; }
.sport-detail ul { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.sport-detail li {
  font-size: 0.8125rem;
  padding: 6px 12px;
  background: var(--white);
  border-radius: 999px;
  border: 1px solid #ddd;
}

/* ── Flat lay ── */
.flatlay {
  background: var(--gray-100);
  color: var(--black);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
  text-align: center;
}

.flatlay .h2 { color: var(--black); }
.flatlay .body { color: #666; margin-bottom: 24px; }

.flatlay-scene {
  margin-top: 48px;
  min-height: 280px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flatlay-ring-demo {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.flatlay-ring {
  width: 100px;
  height: 100px;
  position: relative;
}

/* ── Membership ── */
.membership {
  background: var(--white);
  color: var(--black);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
}

.membership-inner { max-width: 1000px; margin: 0 auto; text-align: center; }

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 40px;
  text-align: left;
}

.tier-card {
  border: 1px solid #ddd;
  border-radius: 16px;
  padding: 28px 24px;
  position: relative;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.tier-card--featured {
  border-color: var(--pulse-violet);
  box-shadow: 0 16px 40px rgba(91,78,255,0.15);
}

.tier-card.is-selected {
  border-color: var(--black);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.tier-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--pulse-violet);
  color: var(--white);
  padding: 4px 12px;
  border-radius: 999px;
}

.tier-card h3 { font-size: 1.125rem; margin-bottom: 8px; }

.tier-price {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.tier-price span { font-size: 1rem; font-weight: 500; color: #666; }

.tier-card ul {
  list-style: none;
  margin-bottom: 20px;
  font-size: 0.875rem;
  color: #555;
}

.tier-card li {
  padding: 6px 0;
  border-bottom: 1px solid #eee;
}

.tier-selected {
  margin-top: 24px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--pulse-violet);
}

/* ── Ecosystem — Garmin cards ── */
.ecosystem {
  background: var(--black);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
  border-top: 1px solid rgba(255,255,255,0.06);
}

.eco-head { text-align: center; margin-bottom: 40px; }

.eco-grid {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.eco-card {
  padding: 24px 16px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  text-align: center;
  transition: border-color 0.25s, background 0.25s;
}

.eco-card:hover {
  border-color: rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.03);
}

.eco-icon { font-size: 1.75rem; display: block; margin-bottom: 12px; }
.eco-card h3 { font-size: 0.9375rem; margin-bottom: 6px; }
.eco-card p { font-size: 0.75rem; color: rgba(255,255,255,0.5); }

/* ── Footer ── */
.footer {
  padding: 40px clamp(16px, 4vw, 32px);
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-logo {
  font-weight: 800;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.footer-ref { font-size: 0.75rem; color: rgba(255,255,255,0.4); margin-bottom: 8px; }
.footer-ref a { color: var(--pulse-violet); text-decoration: underline; }
.footer-note { font-size: 0.6875rem; color: rgba(255,255,255,0.3); }

/* ── Marquee ── */
.marquee {
  background: var(--gray-900);
  border-block: 1px solid rgba(255,255,255,0.06);
  padding: 14px 0;
  overflow: hidden;
}

.marquee-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: marquee 28s linear infinite;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}

.marquee-track span { white-space: nowrap; }
.marquee-dot { color: var(--pulse-violet); }

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ── Cutout placeholders (GPT image slots) ── */
.cutout-slot { position: relative; width: 100%; }
.cutout-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 24px 48px rgba(0,0,0,0.35));
}
.cutout-slot:has(.cutout-img:not([hidden])) .cutout-placeholder { display: none; }
.cutout-slot:has(.cutout-img:not([hidden])) .exploded-fallback-band { display: none; }

.cutout-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  border: 1px dashed rgba(255,255,255,0.2);
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
  text-align: center;
  min-height: 80px;
}

.cutout-placeholder--center { min-height: 200px; aspect-ratio: 2/1; }
.cutout-placeholder--part { min-height: 100px; aspect-ratio: 1; }
.cutout-placeholder--flatlay { min-height: 200px; aspect-ratio: 16/9; max-width: 480px; margin-inline: auto; }

.cutout-badge {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pulse-violet);
}

.cutout-label {
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.4);
  font-family: ui-monospace, monospace;
}

.cutout-copy {
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 12px;
  border: 1px solid rgba(91,78,255,0.4);
  border-radius: 999px;
  background: rgba(91,78,255,0.1);
  color: var(--pulse-violet);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.cutout-copy:hover { background: rgba(91,78,255,0.2); }
.cutout-copy.copied { background: rgba(0,220,130,0.15); border-color: var(--recovery); color: var(--recovery); }

.science .cutout-placeholder,
.flatlay .cutout-placeholder {
  border-color: rgba(0,0,0,0.12);
  background: rgba(0,0,0,0.03);
}
.flatlay .cutout-label { color: #888; }

/* ── Exploded view ── */
.exploded {
  position: relative;
  background: var(--black);
}

.exploded-scroll-spacer { height: 220vh; }

.exploded-pin {
  position: sticky;
  top: calc(var(--announce-h) + var(--nav-h));
  min-height: calc(100vh - var(--announce-h) - var(--nav-h));
  display: flex;
  flex-direction: column;
  padding: clamp(32px, 5vw, 64px) clamp(16px, 4vw, 32px);
  background: radial-gradient(ellipse 70% 50% at 50% 50%, #15101f 0%, var(--black) 65%);
}

.exploded-inner {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.exploded-copy code {
  font-size: 0.8125em;
  color: var(--pulse-violet);
  background: rgba(91,78,255,0.12);
  padding: 2px 6px;
  border-radius: 4px;
}

.exploded-steps {
  list-style: none;
  margin-top: 28px;
}

.exploded-steps li {
  padding: 12px 0 12px 16px;
  border-left: 2px solid rgba(255,255,255,0.1);
  margin-bottom: 4px;
  transition: border-color 0.3s, opacity 0.3s;
  opacity: 0.45;
}

.exploded-steps li.is-active {
  border-left-color: var(--pulse-violet);
  opacity: 1;
}

.exploded-steps strong {
  display: block;
  font-size: 0.9375rem;
  margin-bottom: 2px;
}

.exploded-steps span {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.5);
}

.exploded-stage {
  position: relative;
  aspect-ratio: 1;
  max-height: min(520px, 70vh);
  margin-inline: auto;
  width: 100%;
}

.exploded-glow {
  position: absolute;
  inset: 20%;
  background: radial-gradient(circle, rgba(91,78,255,0.25) 0%, transparent 70%);
  pointer-events: none;
  animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.exploded-part {
  position: absolute;
  transition: transform 0.15s linear, opacity 0.3s;
  will-change: transform;
}

.exploded-part--center {
  inset: 25% 15%;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
}

.exploded-fallback-band {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.band-body--stage {
  width: 100%;
  max-width: 320px;
  height: 72px;
  background: linear-gradient(180deg, #2a2a2a, #0a0a0a);
  border-radius: 36px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.band-sensor--stage {
  width: 56px;
  height: 56px;
  margin-top: -64px;
  background: #111;
  border-radius: 50%;
  border: 3px solid #333;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--pulse-violet);
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.exploded-part--sensor { width: 28%; top: 8%; left: 5%; z-index: 6; }
.exploded-part--battery { width: 26%; top: 12%; right: 2%; z-index: 4; }
.exploded-part--pcba { width: 30%; bottom: 18%; left: 0; z-index: 3; }
.exploded-part--strap { width: 32%; bottom: 8%; right: 5%; z-index: 2; }

.exploded-callout {
  display: block;
  margin-top: 8px;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
  color: var(--pulse-violet);
  opacity: 0;
  transition: opacity 0.3s;
}

.exploded-part.is-visible .exploded-callout { opacity: 1; }

.exploded-scrub {
  max-width: 400px;
  margin: 24px auto 0;
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
}

.exploded-scrub input { flex: 1; accent-color: var(--pulse-violet); cursor: pointer; }
.exploded-scrub-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  min-width: 100px;
  text-align: right;
}

/* ── How it works ── */
.howworks {
  background: var(--white);
  color: var(--black);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
}

.howworks-head { max-width: 600px; margin-bottom: 48px; }

.howworks-sticky {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.howworks-visual {
  position: sticky;
  top: calc(var(--announce-h) + var(--nav-h) + 32px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.how-ring {
  position: relative;
  width: 200px;
  height: 200px;
}

.how-ring svg { width: 100%; height: 100%; }

.how-ring-num {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--black);
}

.how-canvas {
  width: 100%;
  max-width: 320px;
  border-radius: 12px;
  background: var(--gray-100);
}

.howworks-steps { list-style: none; }

.how-step {
  padding: 32px 0;
  border-bottom: 1px solid #eee;
  opacity: 0.35;
  transform: translateX(0);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.how-step.is-active {
  opacity: 1;
  transform: translateX(8px);
}

.how-step-num {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--pulse-violet);
}

.how-step h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 8px 0;
}

.how-step p { font-size: 0.9375rem; color: #666; max-width: 36ch; }

/* ── Science ── */
.science {
  background: var(--gray-900);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
  border-block: 1px solid rgba(255,255,255,0.06);
}

.science-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.sensor-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0;
}

.sensor-chip {
  padding: 8px 14px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: transparent;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.sensor-chip.is-active,
.sensor-chip:hover {
  border-color: var(--pulse-violet);
  background: rgba(91,78,255,0.15);
}

.sensor-readout {
  display: grid;
  gap: 12px;
}

.sensor-readout div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  font-size: 0.875rem;
}

.sensor-readout dt { color: rgba(255,255,255,0.45); }
.sensor-readout dd { font-weight: 600; }

.science-band {
  position: relative;
  width: min(360px, 100%);
  margin: 0 auto;
}

.science-band-body {
  height: 88px;
  background: linear-gradient(180deg, #2a2a2a, #0a0a0a);
  border-radius: 44px;
  box-shadow: 0 24px 48px rgba(0,0,0,0.4);
}

.sensor-hotspot {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
  width: 28px;
  height: 28px;
  border: 2px solid var(--pulse-violet);
  border-radius: 50%;
  background: rgba(91,78,255,0.2);
  cursor: pointer;
  animation: hotspot-pulse 2s ease-in-out infinite;
}

.sensor-hotspot.is-active {
  background: var(--pulse-violet);
  box-shadow: 0 0 20px rgba(91,78,255,0.6);
}

@keyframes hotspot-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(91,78,255,0.4); }
  50% { box-shadow: 0 0 0 12px rgba(91,78,255,0); }
}

.hrv-panel {
  margin-top: 24px;
  padding: 16px;
  background: rgba(0,0,0,0.4);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
}

.hrv-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 12px;
}

.hrv-value { color: var(--recovery); font-size: 1rem; }
.hrv-canvas { width: 100%; height: 120px; display: block; }

/* ── Intelligence ── */
.intelligence {
  background: linear-gradient(180deg, var(--white) 0%, var(--gray-100) 100%);
  color: var(--black);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
}

.intelligence-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.intel-feed {
  margin-top: 24px;
  min-height: 80px;
  font-size: 0.9375rem;
  color: #444;
  font-style: italic;
}

.intelligence-card {
  background: var(--black);
  border-radius: 20px;
  padding: 28px;
  color: var(--white);
  box-shadow: 0 24px 60px rgba(0,0,0,0.15);
}

.intel-mock-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 12px;
}

.intel-mock-text {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 20px;
}

.intel-mock-bars {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.intel-mock-bars span {
  display: block;
  height: 6px;
  width: var(--w);
  background: var(--c);
  border-radius: 999px;
  animation: bar-grow 1s var(--ease) backwards;
}

.intel-mock-bars span:nth-child(2) { animation-delay: 0.1s; }
.intel-mock-bars span:nth-child(3) { animation-delay: 0.2s; }

@keyframes bar-grow {
  from { width: 0; }
}

/* ── App preview ── */
.app-preview {
  background: var(--gray-100);
  color: var(--black);
  padding: clamp(64px, 10vw, 100px) 0;
  overflow: hidden;
}

.app-preview-head {
  padding: 0 clamp(16px, 4vw, 32px);
  max-width: 600px;
  margin-bottom: 40px;
}

.app-scroll-wrap {
  padding-left: clamp(16px, 4vw, 32px);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.app-scroll-wrap::-webkit-scrollbar { display: none; }

.app-scroll {
  display: flex;
  gap: 20px;
  padding-bottom: 16px;
  padding-right: 32px;
}

.app-screen {
  flex: 0 0 min(260px, 75vw);
  scroll-snap-align: start;
}

.app-screen-inner {
  background: #111;
  color: #fff;
  border-radius: 28px;
  padding: 20px 16px;
  min-height: 420px;
  border: 8px solid #222;
  box-shadow: 0 20px 40px rgba(0,0,0,0.12);
  position: relative;
  overflow: hidden;
}

.app-screen-inner header {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 16px;
}

.app-screen--home { background: #fafafa; color: #111; }
.app-screen--home header { color: #888; }
.app-screen--sleep { background: #0d1117; }
.app-screen--recovery {
  background: linear-gradient(180deg, #87CEEB 0%, #e8f4fc 50%);
  color: #111;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.app-screen--coach { background: #1a1520; }

.app-screen-cap {
  display: block;
  margin-top: 12px;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: #666;
}

.app-rings-mini {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 24px 0;
}

.app-rings-mini .mini-ring {
  width: 64px;
  height: 64px;
  position: relative;
}

.app-insight {
  text-align: center;
  font-size: 0.8125rem;
  color: #666;
}

.app-big-num {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  text-align: center;
  margin: 24px 0;
}

.app-big-num--strain { color: var(--strain); }
.app-big-num--sleep { color: var(--sleep); }
.app-big-num--recovery { color: var(--recovery); position: relative; z-index: 1; margin-top: -80px; }

.app-recovery-ring { width: 120px; margin: 16px auto 0; }

.app-sleep-stages {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 100px;
  margin-top: 24px;
}

.app-sleep-stages span {
  flex: 1;
  border-radius: 2px;
  background: var(--sleep);
  opacity: 0.7;
}

.app-coach-list {
  list-style: none;
  font-size: 0.875rem;
  line-height: 2;
  color: rgba(255,255,255,0.8);
}

/* ── Specs ── */
.specs {
  background: var(--white);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
}

.specs-inner { max-width: 900px; margin: 0 auto; text-align: center; }

.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 40px 0 48px;
  text-align: center;
}

.spec-card {
  padding: 24px 16px;
  border: 1px solid #eee;
  border-radius: 12px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s;
}

.spec-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.06);
}

.spec-icon { font-size: 1.5rem; display: block; margin-bottom: 12px; }
.spec-card h3 { font-size: 1rem; margin-bottom: 6px; }
.spec-card p { font-size: 0.75rem; color: #666; }

.compare-table-wrap { overflow-x: auto; text-align: left; }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.compare-table th,
.compare-table td {
  padding: 14px 16px;
  border-bottom: 1px solid #eee;
}

.compare-table th { font-weight: 700; }
.compare-highlight { background: rgba(91,78,255,0.06); font-weight: 600; }

/* ── Testimonials ── */
.testimonials {
  background: var(--black);
  padding: clamp(64px, 10vw, 100px) clamp(16px, 4vw, 32px);
  text-align: center;
}

.testimonials-head { margin-bottom: 40px; }

.testimonial-track {
  max-width: 640px;
  margin: 0 auto;
  min-height: 140px;
  position: relative;
}

.testimonial-card {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.testimonial-card.is-active {
  opacity: 1;
  transform: none;
  position: relative;
}

.testimonial-card p {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 20px;
}

.testimonial-card footer {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.45);
}

.testimonial-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
}

.testimonial-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.2);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s, transform 0.2s;
}

.testimonial-dot.is-active {
  background: var(--pulse-violet);
  transform: scale(1.2);
}

/* ── Flatlay enhanced ── */
.flatlay-cutout { margin-bottom: 32px; }

/* ── CTA band ── */
.cta-band {
  background: radial-gradient(ellipse 80% 80% at 50% 100%, #1a1520 0%, var(--black) 60%);
  padding: clamp(80px, 12vw, 120px) 24px;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.cta-band .h2 { margin-bottom: 28px; }

/* ── Hero canvas ── */
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.6;
}

/* Metric card active state */
.metric-card.is-highlight {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 24px 48px rgba(91,78,255,0.12);
}

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 160ms; }

.reveal-stagger.visible > * {
  opacity: 1;
  transform: none;
}

@media (max-width: 900px) {
  .metrics-grid, .tier-grid { grid-template-columns: 1fr; }
  .eco-grid { grid-template-columns: repeat(2, 1fr); }
  .exploded-inner,
  .science-inner,
  .intelligence-inner,
  .howworks-sticky { grid-template-columns: 1fr; }
  .exploded-scroll-spacer { height: 160vh; }
  .howworks-visual { position: relative; top: 0; }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links, .nav .btn-join { display: none; }
  .nav-toggle { display: flex; }
  .nav.is-open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    padding: 24px;
    background: var(--black);
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
}