:root {
  --bg: #0c0c0c;
  --panel: rgba(22, 22, 22, 0.82);
  --ink: #f4efe8;
  --muted: #b5aba0;
  --rust: #c2693d;
  --sand: #e4d7c6;
  --line: rgba(255, 255, 255, 0.1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Outfit", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(194,105,61,.24), transparent 20%),
    linear-gradient(180deg, #121212 0%, #0c0c0c 58%, #171412 100%);
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--progress, 0%);
  height: 4px;
  z-index: 30;
  background: linear-gradient(90deg, var(--sand), var(--rust));
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
}

.noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .06;
  background-image: radial-gradient(circle, rgba(255,255,255,.95) 1px, transparent 1px);
  background-size: 4px 4px;
}

.hero-wrap, .wrap {
  width: min(1240px, calc(100% - 36px));
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 28px 0 24px;
}

.brand, h1, h2, h3 {
  font-family: "Sora", sans-serif;
  margin: 0;
}

.brand { text-transform: uppercase; letter-spacing: .08em; font-size: .88rem; }
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.nav-links a { color: var(--muted); text-decoration: none; }

.hero-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 24px;
  align-items: center;
  min-height: calc(100vh - 90px);
}

.hero-copy { padding: 30px 0; }
.eyebrow, .mini-tag {
  display: inline-block;
  margin: 0 0 14px;
  font-size: .76rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  font-weight: 700;
}
.eyebrow { color: var(--rust); }
.mini-tag { color: var(--rust); }

h1 {
  font-size: clamp(3.6rem, 8vw, 7rem);
  line-height: .84;
  max-width: 760px;
}

p { line-height: 1.85; color: var(--muted); }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 24px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 154px;
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}
.primary { background: var(--rust); color: white; }
.secondary { border: 1px solid var(--line); color: white; background: transparent; }

.hero-stage {
  position: relative;
  min-height: 720px;
  border-radius: 36px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #111;
}

.hero-card {
  position: absolute;
  inset: 0;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity .7s ease, transform 1.1s ease;
  background-size: cover;
  background-position: center;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,.12), rgba(0,0,0,.82));
}

.hero-card > * { position: relative; z-index: 1; }
.hero-card.active { opacity: 1; transform: scale(1); }
.scene-one { background-image: url("https://images.unsplash.com/photo-1517836357463-d25dfeac3438?auto=format&fit=crop&w=1600&q=80"); }
.scene-two { background-image: url("https://images.unsplash.com/photo-1518611012118-696072aa579a?auto=format&fit=crop&w=1600&q=80"); }
.scene-three { background-image: url("https://images.unsplash.com/photo-1517838277536-f5f99be501cd?auto=format&fit=crop&w=1600&q=80"); }

.hero-card span {
  display: inline-block;
  margin-bottom: 10px;
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: #f1d7c1;
}

.hero-card strong {
  font-family: "Sora", sans-serif;
  font-size: clamp(2rem, 4vw, 3rem);
}

main section { padding: 86px 0; }
.story-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.story-grid article,
.plan,
.zone-copy {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.story-grid strong {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--rust);
}

.zone-panel {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: 22px;
  align-items: center;
  margin-bottom: 28px;
}

.zone-panel.reverse { grid-template-columns: .98fr 1.02fr; }
.zone-panel.reverse .zone-image { order: 2; }
.zone-panel.reverse .zone-copy { order: 1; }

.zone-image {
  min-height: 480px;
  border-radius: 32px;
  background-size: cover;
  background-position: center;
  box-shadow: 0 24px 60px rgba(0,0,0,.28);
}

.zone-a { background-image: url("https://images.unsplash.com/photo-1517836357463-d25dfeac3438?auto=format&fit=crop&w=1400&q=80"); }
.zone-b { background-image: url("https://images.unsplash.com/photo-1518611012118-696072aa579a?auto=format&fit=crop&w=1400&q=80"); }
.zone-c { background-image: url("https://images.unsplash.com/photo-1517838277536-f5f99be501cd?auto=format&fit=crop&w=1400&q=80"); }

.zone-copy h3 { font-size: clamp(2.1rem, 5vw, 4rem); line-height: .92; }

.plans {
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,0));
}

.plan-shell {
  display: grid;
  grid-template-columns: .84fr 1.16fr;
  gap: 24px;
  align-items: start;
}

.plan-copy {
  position: sticky;
  top: 22px;
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.plan {
  padding: 28px;
  border-radius: 28px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(0,0,0,.18);
}

.plan h3 { font-size: clamp(2.2rem, 4vw, 3.6rem); line-height: .95; }
.plan h3 span { font-size: 1rem; }
.plan-name { color: var(--rust); letter-spacing: .16em; text-transform: uppercase; font-size: .82rem; font-weight: 800; }
.featured { background: linear-gradient(180deg, rgba(194,105,61,.2), rgba(255,255,255,.05)); }

.bmi-section {
  background: linear-gradient(180deg, rgba(194,105,61,.08), rgba(255,255,255,0));
}

.bmi-shell {
  display: grid;
  grid-template-columns: .84fr 1.16fr;
  gap: 24px;
  align-items: start;
}

.bmi-card {
  padding: 30px;
  border-radius: 30px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.05);
  box-shadow: 0 18px 40px rgba(0,0,0,.18);
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field-grid.single {
  grid-template-columns: 1fr;
}

.field {
  display: grid;
  gap: 8px;
  color: var(--sand);
  font-size: .92rem;
}

.field input,
.field select {
  width: 100%;
  min-height: 56px;
  padding: 0 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--ink);
  font: inherit;
}

.field input::placeholder {
  color: rgba(244,239,232,.42);
}

.submit-button {
  margin-top: 18px;
  border: 0;
  cursor: pointer;
}

.bmi-result {
  min-height: 72px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--sand);
}

.bmi-result strong {
  display: block;
  margin-bottom: 8px;
  color: white;
  font-family: "Sora", sans-serif;
}

.signup-screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s ease;
  z-index: 40;
}

.signup-screen.is-open {
  opacity: 1;
  pointer-events: auto;
}

.signup-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8,8,8,.72);
  backdrop-filter: blur(10px);
}

.signup-panel {
  position: relative;
  width: min(760px, 100%);
  padding: 32px;
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(18,18,18,.92), rgba(27,20,18,.96));
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 36px 90px rgba(0,0,0,.38);
}

.signup-panel h2 {
  margin-top: 6px;
}

.signup-form {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.close-signup {
  position: absolute;
  top: 18px;
  right: 18px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
}

.reveal {
  transform: translateY(28px);
  opacity: 0;
  transition: transform .55s ease, opacity .55s ease;
}

.reveal.show {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 960px) {
  .hero-grid,
  .story-grid,
  .zone-panel,
  .plan-shell,
  .plan-grid,
  .bmi-shell,
  .field-grid {
    grid-template-columns: 1fr;
  }
  .zone-panel.reverse .zone-image,
  .zone-panel.reverse .zone-copy {
    order: initial;
  }
  .plan-copy {
    position: relative;
    top: 0;
  }
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-stage {
    min-height: 480px;
  }
}