/* ==========================================================================
   NUTRINITY • Premium Bio-Tech Wellness Digital Experience
   Design System: Obsidian, Emerald, Ivory & Dynamic Cellular Atmospheres
   ========================================================================== */

/* --- Custom Properties & Design Tokens --- */
:root {
  /* Brand Base Palette */
  --bg-deep: #050806;
  --bg-surface: #0a100c;
  --bg-card: rgba(16, 26, 20, 0.65);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);
  
  --emerald-primary: #00df82;
  --emerald-glow: rgba(0, 223, 130, 0.35);
  --emerald-dark: #022b1c;
  --emerald-soft: #a7f3d0;
  
  --ivory-white: #f5f8f5;
  --text-muted: #8e9e94;
  --text-subtle: #57685e;
  
  --border-glass: rgba(0, 223, 130, 0.15);
  --border-subtle: rgba(255, 255, 255, 0.08);
  
  /* Dynamic Product World Variables (Mutated by JS per Product) */
  --world-primary: #00df82;
  --world-accent: #10b981;
  --world-glow: rgba(0, 223, 130, 0.3);
  --world-glow-soft: rgba(0, 223, 130, 0.08);
  --world-surface: #08130d;
  --world-gradient: linear-gradient(135deg, rgba(0, 223, 130, 0.18) 0%, rgba(2, 43, 28, 0.05) 100%);
  
  /* Typography */
  --font-display: 'Syne', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Space Grotesk', monospace;
  
  /* Transitions & Animation Easing */
  --ease-cinematic: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --trans-fast: 0.25s var(--ease-cinematic);
  --trans-med: 0.5s var(--ease-cinematic);
  --trans-slow: 0.85s var(--ease-cinematic);
  
  /* Elevation & Shadows */
  --shadow-glow: 0 0 35px var(--world-glow);
  --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
  --shadow-elevated: 0 30px 60px -10px rgba(0, 0, 0, 0.9);
}

/* Theme Variation Classes for Switching Worlds */
body.theme-immune {
  --world-primary: #00df82;
  --world-accent: #059669;
  --world-glow: rgba(0, 223, 130, 0.32);
  --world-glow-soft: rgba(0, 223, 130, 0.08);
  --world-surface: #06150e;
  --world-gradient: linear-gradient(135deg, rgba(0, 223, 130, 0.2) 0%, rgba(3, 46, 29, 0.1) 100%);
}

body.theme-probiotic {
  --world-primary: #ff8542;
  --world-accent: #fb7185;
  --world-glow: rgba(255, 133, 66, 0.32);
  --world-glow-soft: rgba(255, 133, 66, 0.08);
  --world-surface: #170d0a;
  --world-gradient: linear-gradient(135deg, rgba(255, 133, 66, 0.2) 0%, rgba(251, 113, 133, 0.1) 100%);
}

body.theme-vision {
  --world-primary: #00d4ff;
  --world-accent: #3b82f6;
  --world-glow: rgba(0, 212, 255, 0.32);
  --world-glow-soft: rgba(0, 212, 255, 0.08);
  --world-surface: #07111c;
  --world-gradient: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(59, 130, 246, 0.1) 100%);
}

/* --- Global Reset & Foundation --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-deep);
  color: var(--ivory-white);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-deep);
  color: var(--ivory-white);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--trans-slow);
}

::selection {
  background: var(--world-primary);
  color: #000;
}

/* Subtle Film Grain Texture Overlay */
.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Background Ambient Canvas for 3D particles & World Shift */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* Dynamic Radial Aura */
.ambient-aura {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90vw;
  height: 90vh;
  background: radial-gradient(circle at center, var(--world-glow-soft) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  transition: background var(--trans-slow);
}

/* --- Custom Cursor --- */
.custom-cursor {
  position: fixed;
  width: 36px;
  height: 36px;
  border: 1px solid var(--world-primary);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s, border-color 0.4s, background-color 0.2s, transform 0.08s ease-out;
  z-index: 10000;
  display: none;
  mix-blend-mode: exclusion;
}

.custom-cursor-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  background-color: var(--world-primary);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 10001;
  display: none;
  transition: background-color 0.4s, transform 0.03s;
}

@media (hover: hover) and (pointer: fine) {
  .custom-cursor, .custom-cursor-dot {
    display: block;
  }
}

.cursor-hover {
  width: 64px;
  height: 64px;
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

/* --- Container & Grid System --- */
.container {
  width: 100%;
  max-width: 1380px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
}

.container-wide {
  max-width: 1560px;
}

/* --- Typography --- */
h1, h2, h3, h4, .font-display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ivory-white);
  line-height: 1.15;
}

.font-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 15%, var(--world-primary) 85%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: background var(--trans-med);
}

.outline-text {
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.35);
  transition: -webkit-text-stroke 0.3s;
}

.outline-text:hover {
  -webkit-text-stroke: 1px var(--world-primary);
}

/* Section Header Typography */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--world-primary);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  backdrop-filter: blur(12px);
  transition: border-color var(--trans-med), color var(--trans-med);
}

.section-tag .tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--world-primary);
  box-shadow: 0 0 10px var(--world-primary);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.section-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  margin-bottom: 1.25rem;
}

.section-desc {
  font-size: clamp(1rem, 1.3vw, 1.2rem);
  color: var(--text-muted);
  max-width: 680px;
  font-weight: 300;
  line-height: 1.7;
}

/* --- Buttons & Interactive Pills --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--trans-med);
  position: relative;
  overflow: hidden;
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--world-primary);
  color: #040906;
  box-shadow: 0 4px 25px var(--world-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 35px var(--world-glow);
  filter: brightness(1.1);
}

.btn-glass {
  background: var(--bg-glass);
  color: var(--ivory-white);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(16px);
}

.btn-glass:hover {
  background: var(--bg-glass-hover);
  border-color: var(--world-primary);
  transform: translateY(-2px);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* --- Navigation Bar --- */
.navbar {
  position: fixed;
  top: 1.5rem;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: transform var(--trans-med);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: rgba(10, 16, 12, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  max-width: 1340px;
  margin: 0 auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transition: border-color var(--trans-med);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  text-decoration: none;
}

.nav-logo-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.95);
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  transition: transform var(--trans-fast), box-shadow var(--trans-fast);
}

.nav-logo-badge:hover {
  transform: scale(1.04);
  box-shadow: 0 0 15px var(--world-primary);
}

.nav-logo-img {
  height: 26px;
  width: auto;
  display: block;
}

.brand-text-block {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #fff;
  line-height: 1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--world-primary);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--trans-fast);
  position: relative;
  padding: 0.3rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 1.5px;
  background: var(--world-primary);
  transition: width var(--trans-fast);
}

.nav-link:hover, .nav-link.active {
  color: #fff;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Sound Wave Ambient Toggle */
.sound-toggle-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  transition: all var(--trans-fast);
}

.sound-toggle-btn:hover {
  color: #fff;
  border-color: var(--world-primary);
}

.sound-bars {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 12px;
}

.sound-bar {
  width: 2px;
  height: 3px;
  background: var(--text-subtle);
  border-radius: 1px;
  transition: all 0.2s;
}

.sound-toggle-btn.playing .sound-bar {
  background: var(--world-primary);
  animation: sound-anim 1.2s infinite ease-in-out alternate;
}

.sound-toggle-btn.playing .sound-bar:nth-child(1) { animation-delay: 0.1s; height: 8px; }
.sound-toggle-btn.playing .sound-bar:nth-child(2) { animation-delay: 0.3s; height: 12px; }
.sound-toggle-btn.playing .sound-bar:nth-child(3) { animation-delay: 0.2s; height: 6px; }
.sound-toggle-btn.playing .sound-bar:nth-child(4) { animation-delay: 0.4s; height: 10px; }

@keyframes sound-anim {
  0% { height: 2px; }
  100% { height: 12px; }
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 0.5rem;
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 8, 6, 0.97);
  backdrop-filter: blur(30px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--trans-med);
}

.mobile-nav-drawer.active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: #fff;
  text-decoration: none;
  transition: color var(--trans-fast);
}

.mobile-nav-link:hover {
  color: var(--world-primary);
}

.mobile-nav-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
}

/* --- Hero Section --- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  overflow: hidden;
  z-index: 2;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  align-items: center;
  gap: 3rem;
  position: relative;
}

.hero-content {
  position: relative;
  z-index: 3;
}

.hero-logo-lockup {
  display: inline-flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 2rem;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(16px);
}

.hero-logo-img {
  height: 38px;
  width: auto;
  filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.4));
  background: #ffffff;
  padding: 4px 10px;
  border-radius: 8px;
}

.hero-logo-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--emerald-soft);
  letter-spacing: 0.1em;
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  line-height: 1.05;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.hero-lead {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  color: var(--text-muted);
  font-weight: 300;
  max-width: 580px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-bottom: 3.5rem;
}

/* Live Telemetry Bar in Hero */
.hero-telemetry-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  padding: 1.2rem 1.8rem;
  background: rgba(16, 26, 20, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 20px;
  backdrop-filter: blur(20px);
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.telemetry-val {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
}

.telemetry-val span {
  color: var(--world-primary);
}

.telemetry-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--text-subtle);
  text-transform: uppercase;
}

/* Hero 3D Stage / Rotating Cellular Biological Entity */
.hero-visual-stage {
  position: relative;
  width: 100%;
  height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#hero-3d-canvas {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  cursor: grab;
}

#hero-3d-canvas:active {
  cursor: grabbing;
}

/* Floating Biological Badges around 3D core */
.floating-bio-card {
  position: absolute;
  padding: 0.6rem 1.1rem;
  background: rgba(10, 16, 12, 0.75);
  border: 1px solid var(--border-glass);
  border-radius: 14px;
  backdrop-filter: blur(16px);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  animation: float-slow 6s ease-in-out infinite alternate;
  pointer-events: none;
}

.bio-card-1 {
  top: 15%;
  right: -5%;
  animation-delay: 0s;
}

.bio-card-2 {
  bottom: 18%;
  left: -8%;
  animation-delay: -3s;
}

@keyframes float-slow {
  0% { transform: translateY(0px) rotate(0deg); }
  100% { transform: translateY(-16px) rotate(1.5deg); }
}

.bio-card-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(0, 223, 130, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--world-primary);
}

.bio-card-text {
  display: flex;
  flex-direction: column;
}

.bio-card-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-subtle);
  letter-spacing: 0.08em;
}

.bio-card-value {
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
}

/* Hero Quick Navigation Pillows */
.hero-product-pills {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-pill-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: all var(--trans-fast);
}

.hero-pill-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--world-primary);
  color: #fff;
  transform: translateY(-2px);
}

.hero-pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.pill-dot-immune { background: #00df82; box-shadow: 0 0 8px #00df82; }
.pill-dot-probiotic { background: #ff8542; box-shadow: 0 0 8px #ff8542; }
.pill-dot-vision { background: #00d4ff; box-shadow: 0 0 8px #00d4ff; }

/* --- Section 2: Brand / Wellness Philosophy --- */
.philosophy-section {
  padding: 8rem 0;
  position: relative;
  z-index: 2;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: center;
}

.pillar-cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.pillar-card {
  display: flex;
  gap: 1.5rem;
  padding: 1.8rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  backdrop-filter: blur(16px);
  transition: all var(--trans-med);
  position: relative;
  overflow: hidden;
}

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: transparent;
  transition: background var(--trans-fast);
}

.pillar-card:hover {
  border-color: var(--world-primary);
  transform: translateX(8px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
}

.pillar-card:hover::before {
  background: var(--world-primary);
}

.pillar-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--world-primary);
  opacity: 0.7;
}

.pillar-content h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.pillar-content p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Interactive Cellular Absorption Graphic / Canvas */
.cellular-viz-container {
  position: relative;
  background: rgba(10, 16, 12, 0.7);
  border: 1px solid var(--border-glass);
  border-radius: 28px;
  padding: 2.5rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-elevated);
}

#absorption-canvas {
  width: 100%;
  height: 380px;
  border-radius: 16px;
  background: radial-gradient(circle at center, rgba(0, 223, 130, 0.08) 0%, #030805 85%);
  display: block;
}

.viz-overlay-data {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.viz-metric-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-subtle);
  text-transform: uppercase;
}

.viz-metric-val {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--emerald-soft);
}

/* --- Section 3: The Product Universe (The Digital Exhibition) --- */
.universe-section {
  padding: 8rem 0;
  position: relative;
  z-index: 2;
  transition: background var(--trans-slow);
}

.exhibition-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3.5rem;
}

/* World Selector Tabs (Immune, Probiotic, Vision) */
.world-selector-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.world-tab-btn {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1.8rem;
  background: rgba(16, 26, 20, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  transition: all var(--trans-med);
  backdrop-filter: blur(16px);
  position: relative;
}

.world-tab-btn:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.world-tab-btn.active {
  color: #fff;
  background: var(--bg-surface);
  border-color: var(--world-primary);
  box-shadow: 0 0 25px var(--world-glow);
}

.world-tab-icon {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  transition: transform var(--trans-fast);
}

.world-tab-btn.active .world-tab-icon {
  transform: scale(1.3);
}

.tab-icon-immune { background: #00df82; box-shadow: 0 0 8px #00df82; }
.tab-icon-probiotic { background: #ff8542; box-shadow: 0 0 8px #ff8542; }
.tab-icon-vision { background: #00d4ff; box-shadow: 0 0 8px #00d4ff; }

/* The Exhibition Showcase Stage */
.exhibition-stage {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 3.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 32px;
  padding: 3rem;
  backdrop-filter: blur(28px);
  box-shadow: var(--shadow-elevated);
  position: relative;
  overflow: hidden;
  transition: border-color var(--trans-med), box-shadow var(--trans-med);
}

.exhibition-stage::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--world-gradient);
  pointer-events: none;
  opacity: 0.35;
  transition: opacity var(--trans-slow);
}

/* Gallery Display Container (Left) */
.gallery-viewport {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  z-index: 2;
}

/* Main Active Specimen Image Frame */
.specimen-frame {
  position: relative;
  width: 100%;
  height: 520px;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.04) 0%, rgba(0, 0, 0, 0.6) 80%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: crosshair;
  transition: border-color var(--trans-med);
}

.specimen-frame:hover {
  border-color: var(--world-primary);
}

.main-specimen-img {
  max-width: 85%;
  max-height: 85%;
  object-fit: contain;
  transition: transform 0.4s var(--ease-cinematic), opacity 0.3s ease;
  filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.8));
  user-select: none;
  -webkit-user-drag: none;
}

/* Interactive Magnifier / Zoom Lens */
.zoom-loupe {
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 2px solid var(--world-primary);
  box-shadow: 0 0 25px var(--world-glow), inset 0 0 20px rgba(0,0,0,0.6);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.85);
  transition: opacity 0.2s, transform 0.2s;
  background-repeat: no-repeat;
  z-index: 10;
  backdrop-filter: blur(1px);
}

.specimen-frame:hover .zoom-loupe.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* Navigation Controls over Specimen Frame */
.gallery-nav-controls {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 1rem;
  pointer-events: none;
  z-index: 5;
}

.gallery-ctrl-btn {
  pointer-events: auto;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(10, 16, 12, 0.8);
  border: 1px solid var(--border-subtle);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--trans-fast);
  backdrop-filter: blur(12px);
}

.gallery-ctrl-btn:hover {
  background: var(--world-primary);
  color: #040906;
  border-color: var(--world-primary);
  transform: scale(1.1);
  box-shadow: 0 0 20px var(--world-glow);
}

/* Specimen Info Bar Under Image */
.specimen-info-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.5rem;
}

.slide-counter-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--world-primary);
}

.slide-counter-badge span {
  color: var(--text-subtle);
}

.slide-caption-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.btn-inspect-modal {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: color var(--trans-fast);
}

.btn-inspect-modal:hover {
  color: var(--world-primary);
}

/* Thumbnail Strip (All 5 Real Product Assets) */
.thumbnail-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.85rem;
}

.thumb-item {
  position: relative;
  height: 80px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem;
  transition: all var(--trans-fast);
}

.thumb-item:hover {
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

.thumb-item.active {
  border-color: var(--world-primary);
  box-shadow: 0 0 15px var(--world-glow);
  background: rgba(255, 255, 255, 0.06);
}

.thumb-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform var(--trans-fast);
}

.thumb-item:hover img {
  transform: scale(1.08);
}

/* Right Details Dossier Panel */
.specimen-dossier {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  z-index: 2;
}

.specimen-header {
  margin-bottom: 1.5rem;
}

.specimen-code-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--world-primary);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.specimen-name {
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.1;
  margin-bottom: 0.6rem;
}

.specimen-tagline {
  font-size: 1.05rem;
  color: var(--emerald-soft);
  font-weight: 400;
  margin-bottom: 1rem;
}

.specimen-summary {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.8rem;
}

/* Quick Specifications Grid */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.spec-cell {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 0.85rem 1rem;
}

.spec-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.2rem;
}

.spec-val {
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
}

/* Dossier Interactive Tabs */
.dossier-tab-headers {
  display: flex;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 1.25rem;
  gap: 1.5rem;
}

.dossier-tab-btn {
  background: none;
  border: none;
  padding: 0.5rem 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  position: relative;
  transition: color var(--trans-fast);
}

.dossier-tab-btn::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--world-primary);
  transition: width var(--trans-fast);
}

.dossier-tab-btn.active {
  color: #fff;
}

.dossier-tab-btn.active::after {
  width: 100%;
}

.dossier-tab-content {
  min-height: 140px;
  margin-bottom: 2rem;
}

.dossier-tab-pane {
  display: none;
  animation: fadeIn 0.3s ease;
}

.dossier-tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.ingredient-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.ing-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  font-size: 0.78rem;
  color: var(--emerald-soft);
  transition: all var(--trans-fast);
}

.ing-chip:hover {
  background: rgba(0, 223, 130, 0.12);
  border-color: var(--world-primary);
  color: #fff;
}

/* Dossier Actions */
.dossier-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* --- Section 4: Interactive Product Experience (Bio-Molecular Lab) --- */
.lab-section {
  padding: 8rem 0;
  position: relative;
  z-index: 2;
}

.lab-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-glass);
  border-radius: 32px;
  padding: 3.5rem;
  position: relative;
  overflow: hidden;
}

.lab-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.lab-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3rem;
  align-items: center;
}

.lab-controls {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.lab-formula-card {
  padding: 1.5rem;
  background: rgba(16, 26, 20, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--trans-med);
  position: relative;
}

.lab-formula-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.lab-formula-card.active {
  border-color: var(--world-primary);
  background: rgba(0, 223, 130, 0.05);
  box-shadow: 0 0 25px var(--world-glow-soft);
}

.lab-formula-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.lab-formula-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.lab-potency-bar-bg {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  margin-top: 0.8rem;
  overflow: hidden;
}

.lab-potency-bar-fill {
  height: 100%;
  background: var(--world-primary);
  border-radius: 2px;
  transition: width 0.8s var(--ease-cinematic);
}

/* Simulation Canvas */
.lab-sim-stage {
  position: relative;
  height: 450px;
  background: #030604;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  overflow: hidden;
}

#lab-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.sim-hud {
  position: absolute;
  top: 1.2rem;
  left: 1.2rem;
  right: 1.2rem;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}

.sim-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(10, 16, 12, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--world-primary);
  backdrop-filter: blur(8px);
}

/* --- Section 5: Science / Formula Standards --- */
.science-section {
  padding: 8rem 0;
  position: relative;
  z-index: 2;
}

.science-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.science-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.science-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 2.2rem 1.8rem;
  backdrop-filter: blur(16px);
  transition: all var(--trans-med);
  position: relative;
  overflow: hidden;
}

.science-card:hover {
  border-color: var(--world-primary);
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
}

.science-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(0, 223, 130, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--world-primary);
  margin-bottom: 1.5rem;
  font-size: 1.4rem;
  border: 1px solid var(--border-glass);
}

.science-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.science-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Section 6: Brand Story & Heritage --- */
.story-section {
  padding: 8rem 0;
  position: relative;
  z-index: 2;
}

.story-card-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  background: linear-gradient(145deg, rgba(16, 26, 20, 0.7) 0%, rgba(5, 8, 6, 0.9) 100%);
  border: 1px solid var(--border-glass);
  border-radius: 36px;
  padding: 4.5rem;
  backdrop-filter: blur(30px);
  box-shadow: var(--shadow-elevated);
}

.story-content h2 {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  margin-bottom: 1.5rem;
}

.story-content p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.story-visual-mosaic {
  position: relative;
  height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.story-center-emblem {
  position: relative;
  z-index: 2;
  text-align: center;
}

.story-emblem-badge {
  background: rgba(255, 255, 255, 0.95);
  padding: 1.5rem 2rem;
  border-radius: 24px;
  box-shadow: 0 0 50px var(--emerald-glow);
  display: inline-block;
  margin-bottom: 1.5rem;
}

.story-emblem-img {
  height: 70px;
  width: auto;
  display: block;
}

.story-orbit-ring {
  position: absolute;
  border: 1px dashed rgba(0, 223, 130, 0.25);
  border-radius: 50%;
  pointer-events: none;
  animation: orbit-rotate 30s linear infinite;
}

.ring-1 { width: 360px; height: 360px; }
.ring-2 { width: 440px; height: 440px; border-color: rgba(255, 255, 255, 0.08); animation-direction: reverse; animation-duration: 45s; }

@keyframes orbit-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* --- Section 7: Final CTA & Private Concierge --- */
.contact-section {
  padding: 8rem 0 6rem;
  position: relative;
  z-index: 2;
}

.contact-box {
  background: radial-gradient(circle at top right, rgba(0, 223, 130, 0.12) 0%, rgba(10, 16, 12, 0.85) 60%);
  border: 1px solid var(--border-glass);
  border-radius: 36px;
  padding: 4.5rem;
  backdrop-filter: blur(30px);
  box-shadow: var(--shadow-elevated);
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}

.contact-info h2 {
  font-size: clamp(2.2rem, 3.8vw, 3.2rem);
  margin-bottom: 1.2rem;
}

.contact-info p {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.concierge-features {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.concierge-feat-item {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.concierge-feat-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0, 223, 130, 0.15);
  color: var(--world-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.concierge-feat-text {
  font-size: 0.92rem;
  color: #fff;
}

/* Interactive Concierge Form */
.concierge-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-subtle);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: all var(--trans-fast);
  outline: none;
}

.form-select option {
  background: #0a100c;
  color: #fff;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--world-primary);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 15px var(--world-glow-soft);
}

.form-textarea {
  min-height: 110px;
  resize: vertical;
}

.form-feedback {
  padding: 0.8rem 1.2rem;
  border-radius: 12px;
  font-size: 0.88rem;
  display: none;
}

.form-feedback.success {
  display: block;
  background: rgba(0, 223, 130, 0.15);
  border: 1px solid var(--world-primary);
  color: #fff;
}

/* --- Global Footer --- */
.site-footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #030504;
  position: relative;
  z-index: 2;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: #fff;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color var(--trans-fast);
}

.footer-links a:hover {
  color: var(--world-primary);
}

.footer-disclaimer-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 2.5rem;
}

.footer-disclaimer-box p {
  font-size: 0.75rem;
  color: var(--text-subtle);
  line-height: 1.6;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-subtle);
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  flex-wrap: wrap;
  gap: 1rem;
}

.back-to-top-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: color var(--trans-fast);
}

.back-to-top-btn:hover {
  color: var(--world-primary);
}

/* --- Fullscreen Inspection Lightbox Modal --- */
.lightbox-modal {
  position: fixed;
  inset: 0;
  background: rgba(3, 6, 4, 0.95);
  backdrop-filter: blur(30px);
  z-index: 100000;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--trans-med);
}

.lightbox-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.lightbox-title {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 0.08em;
  color: #fff;
}

.lightbox-close-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.lightbox-close-btn:hover {
  background: var(--world-primary);
  color: #040906;
}

.lightbox-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 2rem;
  overflow: hidden;
}

.lightbox-img {
  max-width: 90%;
  max-height: 85vh;
  object-fit: contain;
  filter: drop-shadow(0 20px 50px rgba(0,0,0,0.9));
  transition: transform 0.3s ease;
  user-select: none;
}

.lightbox-ctrl-prev, .lightbox-ctrl-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(10, 16, 12, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.lightbox-ctrl-prev:hover, .lightbox-ctrl-next:hover {
  background: var(--world-primary);
  color: #040906;
}

.lightbox-ctrl-prev { left: 2rem; }
.lightbox-ctrl-next { right: 2rem; }

/* --- Responsive Media Queries --- */
@media (max-width: 1200px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-visual-stage {
    height: 480px;
  }
  .exhibition-stage {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding: 2rem;
  }
  .specimen-frame {
    height: 440px;
  }
  .science-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .story-card-wrap {
    grid-template-columns: 1fr;
    padding: 3rem;
  }
  .contact-box {
    grid-template-columns: 1fr;
    padding: 3rem;
  }
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }
  .nav-links, .sound-toggle-btn, .nav-actions .btn-primary {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-section {
    padding: 7rem 0 3rem;
  }
  .hero-title {
    font-size: 2.4rem;
  }
  .hero-telemetry-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1rem;
  }
  .hero-visual-stage {
    height: 380px;
  }
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .cellular-viz-container {
    padding: 1.5rem;
  }
  #absorption-canvas {
    height: 280px;
  }
  .specimen-frame {
    height: 340px;
  }
  .thumbnail-strip {
    grid-template-columns: repeat(5, 1fr);
    gap: 0.4rem;
  }
  .thumb-item {
    height: 60px;
  }
  .lab-grid {
    grid-template-columns: 1fr;
  }
  .lab-container {
    padding: 1.8rem;
  }
  .science-grid {
    grid-template-columns: 1fr;
  }
  .story-card-wrap {
    padding: 2rem;
  }
  .contact-box {
    padding: 2rem;
  }
  .form-group-row {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .lightbox-ctrl-prev { left: 0.5rem; }
  .lightbox-ctrl-next { right: 0.5rem; }
}