/* 
  TARUUMA Airflow Systems - Premium Apple-Inspired Design System
  Author: Antigravity Code Assistant
*/

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Variables & Design Tokens --- */
:root {
  /* Color System */
  --bg-primary: #F5F5F7;
  --bg-secondary: #FFFFFF;
  --card-bg: #FBFBFD;
  --text-primary: #1D1D1F;
  --text-secondary: #6E6E73;
  --divider: #D2D2D7;
  --accent-blue: #0066CC;
  --accent-blue-hover: #004999;
  
  /* Soft Product Surface Tints */
  --surface-industrial: #E9EEF2;
  --surface-domestic: #FFFFFF;
  --surface-freshair: #FBFBFD;
  --surface-exhaust: #DDE3EA;
  --surface-mancooler: #E2E6EA;
  --surface-axial: #EEF3F6;

  /* Typography Scale */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Animations */
  --apple-ease: cubic-bezier(0.28, 0.11, 0.32, 1);
  --transition-slow: all 0.8s var(--apple-ease);
  --transition-medium: all 0.4s var(--apple-ease);
  --transition-fast: all 0.2s var(--apple-ease);
}

/* --- Base Reset --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  overflow-x: hidden;
  line-height: 1.5;
}

/* --- Navigation --- */
.nav-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 52px;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(210, 210, 217, 0.4);
  z-index: 1000;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: var(--transition-medium);
}

.nav-content {
  width: 100%;
  max-width: 1024px;
  padding: 0 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  text-decoration: none;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-brand span {
  font-weight: 300;
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--text-secondary);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 400;
  letter-spacing: -0.01em;
  transition: var(--transition-fast);
}

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

.nav-cta {
  font-size: 12px;
  color: var(--accent-blue);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-fast);
}

.nav-cta:hover {
  color: var(--accent-blue-hover);
  text-decoration: underline;
}

.nav-hamburger {
  display: none;
}

/* --- Hero Section --- */
.hero-section {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 120px 0 60px 0;
  background-color: var(--bg-secondary);
  text-align: center;
  position: relative;
  overflow: hidden;
  perspective: 1000px;
}

/* Premium B2B Grid Backdrop with Radial Masking */
.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 102, 204, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 102, 204, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 85%);
  mask-image: radial-gradient(circle at center, black 40%, transparent 85%);
  z-index: 1;
  pointer-events: none;
}

.hero-tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 24px;
  display: inline-block;
  background-color: rgba(0, 102, 204, 0.06);
  padding: 6px 16px;
  border-radius: 980px;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1.2s var(--apple-ease) forwards;
  position: relative;
  z-index: 2;
}

.hero-heading {
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--text-primary);
  max-width: 1000px;
  margin-bottom: 24px;
  padding: 0 22px;
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 1.2s var(--apple-ease) forwards;
  position: relative;
  z-index: 2;
}

.hero-subheading {
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 400;
  color: var(--text-secondary);
  max-width: 700px;
  line-height: 1.45;
  margin-bottom: 35px;
  padding: 0 22px;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1.2s var(--apple-ease) 0.2s forwards;
  position: relative;
  z-index: 2;
}

.hero-ctas {
  display: flex;
  gap: 24px;
  margin-bottom: 60px;
  padding: 0 22px;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1.2s var(--apple-ease) 0.4s forwards;
  position: relative;
  z-index: 2;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: var(--bg-secondary);
  padding: 12px 28px;
  border-radius: 980px;
  font-size: 17px;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition-medium);
}

.btn-primary:hover {
  background-color: var(--accent-blue-hover);
}

.btn-link {
  color: var(--accent-blue);
  font-size: 17px;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-medium);
}

.btn-link::after {
  content: '→';
  transition: transform 0.2s ease;
}

.btn-link:hover {
  color: var(--accent-blue-hover);
}

.btn-link:hover::after {
  transform: translateX(4px);
}

.hero-visual-wrapper {
  width: 90%;
  max-width: 1000px;
  margin-top: 50px;
  position: relative;
  z-index: 2;
  perspective: 1000px;
}

.hero-visual-glow {
  position: absolute;
  top: -8%;
  left: -4%;
  width: 108%;
  height: 116%;
  background: radial-gradient(circle at center, rgba(0, 102, 204, 0.16) 0%, rgba(0, 102, 204, 0) 70%);
  filter: blur(40px);
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.95);
  animation: heroFadeInScale 1.6s var(--apple-ease) 0.5s forwards, glowFloat 6s ease-in-out infinite 2.2s;
}

.hero-visual-container {
  width: 100%;
  position: relative;
  border-radius: 36px;
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.18), 0 10px 20px rgba(0, 0, 0, 0.08);
  border: none;
  opacity: 0;
  transform: scale(0.96);
  animation: heroFadeInScale 1.6s var(--apple-ease) 0.5s forwards, heroFloat 6s ease-in-out infinite 2.2s;
  /* Fix Webkit rounding clipping bugs */
  transform-style: preserve-3d;
  will-change: transform;
  z-index: 2;
}

.hero-visual {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  mix-blend-mode: normal;
  border-radius: inherit;
}

/* Animations */
@keyframes heroFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroFadeInScale {
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes heroFloat {
  0%, 100% {
    transform: scale(1) translateY(0) rotateX(0deg) rotateY(0deg);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.18), 0 10px 20px rgba(0, 0, 0, 0.08);
  }
  50% {
    transform: scale(1) translateY(-12px) rotateX(1deg) rotateY(-0.5deg);
    box-shadow: 0 45px 90px rgba(0, 0, 0, 0.22), 0 15px 35px rgba(0, 0, 0, 0.1);
  }
}

@keyframes glowFloat {
  0%, 100% {
    transform: scale(1) translateY(0);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.06) translateY(-8px);
    opacity: 1;
  }
}

/* --- Section Formatting --- */
.section {
  padding: 140px 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--bg-primary);
}

.section-white {
  background-color: var(--bg-secondary);
}

.section-content {
  width: 100%;
  max-width: 1024px;
}

.section-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 12px;
  text-align: center;
}

.section-heading {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 20px;
}

.section-intro {
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 400;
  color: var(--text-secondary);
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px auto;
  line-height: 1.5;
}

/* --- Scroll Reveal Utilities --- */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: var(--transition-slow);
}

.reveal-on-scroll.active {
  opacity: 1;
  transform: translateY(0);
}

/* --- Product Lineup Section --- */
.lineup-cta-container {
  text-align: center;
  margin-top: -30px;
  margin-bottom: 60px;
}

.lineup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

/* Premium Product Card */
.product-card {
  border-radius: 32px;
  padding: 40px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(210, 210, 217, 0.4);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.01);
  transition: var(--transition-medium);
  cursor: pointer;
}

/* Surface styles */
.surface-industrial { background-color: var(--surface-industrial); }
.surface-domestic { background-color: var(--bg-secondary); border: 1px solid var(--divider); }
.surface-freshair { background-color: var(--surface-freshair); }
.surface-exhaust { background-color: var(--surface-exhaust); }
.surface-mancooler:hover { background-color: var(--surface-mancooler); }
.surface-mancooler { background-color: var(--surface-mancooler); }
.surface-axial { background-color: var(--surface-axial); }

.product-card-top {
  z-index: 2;
}

.product-card-meta {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.product-card-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.2;
}

.product-card-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.4;
  max-width: 280px;
}

.product-card-visual-wrapper {
  flex-grow: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px 0;
  z-index: 1;
  position: relative;
}

.product-card-image {
  max-height: 220px;
  max-width: 100%;
  object-fit: contain;
  transition: var(--transition-medium);
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.05));
  mix-blend-mode: multiply;
}

.product-card-shadow {
  position: absolute;
  bottom: 15px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 12px;
  background: radial-gradient(ellipse, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0) 70%);
  border-radius: 50%;
  transition: var(--transition-medium);
}

.product-card-bottom {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  z-index: 2;
  width: 100%;
}

.product-card-bottom .product-card-meta {
  order: 1;
  margin-bottom: 0;
}

.product-card-bottom .card-links {
  order: 2;
  display: flex;
  gap: 20px;
}

.link-chevron {
  font-size: 14px;
  color: var(--accent-blue);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.link-chevron::after {
  content: '›';
  font-size: 18px;
  line-height: 1;
  transition: transform 0.2s ease;
}

.link-chevron:hover {
  color: var(--accent-blue-hover);
}

.link-chevron:hover::after {
  transform: translateX(3px);
}

/* Card Hover Dynamics */
.product-card:hover {
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.04);
  transform: translateY(-4px);
}

.product-card:hover .product-card-image {
  transform: scale(1.04) translateY(-5px);
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.08));
}

.product-card:hover .product-card-shadow {
  width: 65%;
  transform: translateX(-50%) scale(1.05);
  background: radial-gradient(ellipse, rgba(0,0,0,0.12) 0%, rgba(0,0,0,0) 70%);
}

/* --- Category Feature Sections --- */
.feature-split {
  display: flex;
  align-items: center;
  gap: 80px;
  margin-top: 40px;
}

.feature-split-reverse {
  flex-direction: row-reverse;
}

.feature-image-panel {
  flex: 1;
  border-radius: 28px;
  padding: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  min-height: 480px;
}

.feature-image-panel img {
  max-width: 90%;
  max-height: 380px;
  object-fit: contain;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.08));
  mix-blend-mode: multiply;
}

.feature-image-shadow {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 20px;
  background: radial-gradient(ellipse, rgba(0,0,0,0.12) 0%, rgba(0,0,0,0) 70%);
  border-radius: 50%;
}

.feature-info-panel {
  flex: 1;
}

.feature-subtitle {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.feature-title {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 20px;
}

.feature-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 32px;
}

.feature-bullets {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.bullet-item {
  display: flex;
  gap: 12px;
}

.bullet-icon {
  color: var(--accent-blue);
  font-weight: 700;
}

.bullet-text {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.4;
}

.feature-split-buttons {
  margin-top: 36px;
  display: flex;
  gap: 24px;
}

/* --- Interactive Model Detail Modal --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 2000;
  display: none;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: opacity 0.4s var(--apple-ease);
}

.modal-container {
  width: 90%;
  max-width: 960px;
  height: 85vh;
  background-color: var(--bg-secondary);
  border-radius: 36px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transform: scale(0.95) translateY(30px);
  transition: transform 0.4s var(--apple-ease);
}

.modal-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--bg-primary);
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 18px;
  color: var(--text-primary);
  z-index: 10;
  transition: var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--divider);
}

.modal-body {
  flex-grow: 1;
  overflow-y: auto;
  padding: 60px;
}

.modal-header {
  margin-bottom: 40px;
}

.modal-meta {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-blue);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.modal-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.modal-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 640px;
}

.modal-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.modal-visual-panel {
  background-color: var(--bg-primary);
  border-radius: 24px;
  padding: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 320px;
  position: relative;
}

.modal-visual-panel img {
  height: auto;
  max-height: 280px;
  width: auto;
  max-width: 90%;
  object-fit: contain;
  mix-blend-mode: multiply;
}

/* --- Modal Visual Slider (CSS Scroll Snap Carousel) --- */
.modal-visual-slider {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 360px;
  background-color: var(--bg-primary);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.slider-viewport {
  width: 100%;
  height: 100%;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  display: flex;
}

.slider-viewport::-webkit-scrollbar {
  display: none;
}

.slider-track {
  display: flex;
  width: 100%;
  height: 100%;
}

.slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  scroll-snap-align: center;
  padding: 40px 60px;
  text-align: center;
  position: relative;
}

.slide img {
  height: auto;
  max-height: 280px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 15px 30px rgba(0,0,0,0.06));
  mix-blend-mode: multiply;
  transition: transform 0.4s var(--apple-ease);
}

.slide:hover img {
  transform: scale(1.03);
}

.slide-caption {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 16px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--divider);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 18px;
  color: var(--text-primary);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  transition: var(--transition-fast);
  z-index: 5;
  user-select: none;
}

.slider-arrow:hover {
  background-color: var(--bg-secondary);
  border-color: var(--text-secondary);
  transform: translateY(-50%) scale(1.05);
}

.arrow-left {
  left: 16px;
}

.arrow-right {
  right: 16px;
}

.slider-dots {
  position: absolute;
  bottom: 16px;
  display: flex;
  gap: 8px;
  z-index: 5;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--divider);
  cursor: pointer;
  transition: var(--transition-fast);
}

.slider-dot.active {
  background-color: var(--text-primary);
  transform: scale(1.2);
}

.modal-spec-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.modal-section-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--divider);
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.spec-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.spec-chip {
  background-color: var(--bg-primary);
  padding: 8px 16px;
  border-radius: 80px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.feature-checklist {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checklist-item {
  display: flex;
  gap: 10px;
  font-size: 15px;
  color: var(--text-primary);
}

.checklist-item::before {
  content: '✓';
  color: var(--accent-blue);
  font-weight: bold;
}

.modal-spec-table-wrapper {
  margin-top: 20px;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.spec-table th {
  padding: 12px 16px;
  border-bottom: 1px solid var(--divider);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.spec-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(210, 210, 217, 0.4);
  font-size: 14px;
  color: var(--text-primary);
}

.spec-table tr:last-child td {
  border-bottom: none;
}

.spec-table tr:hover td {
  background-color: var(--bg-primary);
}

.modal-action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--card-bg);
  padding: 24px 60px;
  border-top: 1px solid var(--divider);
}

.modal-action-text {
  font-size: 15px;
  color: var(--text-secondary);
}

/* Modal Open state via JS */
.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-overlay.active .modal-container {
  transform: scale(1) translateY(0);
}

/* --- Model Comparison Section --- */
.compare-container {
  margin-top: 40px;
}

.compare-selector {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}

.compare-btn {
  background-color: var(--bg-secondary);
  border: 1px solid var(--divider);
  padding: 10px 20px;
  border-radius: 980px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--text-secondary);
}

.compare-btn.active, .compare-btn:hover {
  background-color: var(--text-primary);
  color: var(--bg-secondary);
  border-color: var(--text-primary);
}

.compare-layout-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 320px));
  gap: 24px;
  justify-content: center;
}

.compare-col {
  background-color: var(--bg-secondary);
  border-radius: 24px;
  padding: 32px;
  border: 1px solid rgba(210, 210, 217, 0.4);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 440px;
  max-width: 320px;
  width: 100%;
  margin: 0 auto;
  transition: var(--transition-medium);
}

.compare-col:hover {
  border-color: var(--divider);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
}

.compare-col-header {
  border-bottom: 1px solid var(--divider);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.compare-cat-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.compare-model-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.compare-model-usage {
  font-size: 13px;
  color: var(--text-secondary);
  min-height: 38px;
}

.compare-specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
  flex-grow: 1;
}

.compare-spec-item {
  display: flex;
  flex-direction: column;
}

.compare-spec-label {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 2px;
}

.compare-spec-val {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 600;
}

.compare-cta-btn {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: none;
  border-radius: 980px;
  padding: 10px;
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-medium);
  text-decoration: none;
}

.compare-cta-btn:hover {
  background-color: var(--text-primary);
  color: var(--bg-secondary);
}

/* --- Manufacturing & Infrastructure Section --- */
.infrastructure-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.infrastructure-card {
  background-color: var(--card-bg);
  border-radius: 24px;
  padding: 40px;
  border: 1px solid rgba(210, 210, 217, 0.4);
}

.infrastructure-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.infrastructure-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 24px;
}

.infra-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.infra-tag {
  background-color: var(--bg-secondary);
  border: 1px solid rgba(210, 210, 217, 0.6);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-primary);
}

/* --- Certifications & Trust Section --- */
.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
  border-top: 1px solid var(--divider);
  padding-top: 60px;
}

.trust-item {
  text-align: center;
}

.trust-number {
  font-size: 48px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.trust-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.trust-desc {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 180px;
  margin: 0 auto;
}

.cert-logos-container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 60px;
  margin-top: 60px;
}

.cert-logo-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--divider);
  border-radius: 16px;
  padding: 20px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 180px;
}

.cert-logo-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  letter-spacing: 0.02em;
}

.cert-logo-sub {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Contact Section --- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  margin-top: 40px;
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 40px;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-detail-item {
  display: flex;
  gap: 16px;
}

.contact-detail-icon {
  color: var(--accent-blue);
  width: 24px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  margin-top: 2px;
}

.contact-detail-content h4 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.contact-detail-content p {
  font-size: 15px;
  color: var(--text-primary);
  line-height: 1.4;
}

.contact-detail-content p a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: var(--transition-fast);
}

.contact-detail-content p a:hover {
  color: var(--accent-blue-hover);
  text-decoration: underline;
}

.contact-form-panel {
  background-color: var(--bg-secondary);
  border-radius: 24px;
  padding: 40px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.04);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.form-label svg {
  color: var(--accent-blue);
  opacity: 0.85;
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  background-color: var(--bg-primary);
  border-radius: 12px;
  font-family: var(--font-main);
  font-size: 15px;
  color: var(--text-primary);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-input::placeholder {
  color: #A0A0A5;
  font-weight: 400;
}

.form-input:hover {
  border-color: rgba(0, 0, 0, 0.2);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-blue);
  background-color: var(--bg-secondary);
  box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.12), inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
  line-height: 1.5;
}

.form-submit-btn {
  background: linear-gradient(135deg, #0066CC, #0055B3);
  color: #FFFFFF;
  border: none;
  padding: 16px 32px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.2);
  letter-spacing: -0.01em;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.form-submit-btn:hover {
  background: linear-gradient(135deg, #0055B3, #004499);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 102, 204, 0.3);
}

.form-submit-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.2);
}

/* --- Footer --- */
.footer {
  background-color: var(--bg-primary);
  padding: 80px 22px 40px 22px;
  border-top: 1px solid var(--divider);
}

.footer-content {
  max-width: 1024px;
  margin: 0 auto;
}

.footer-top {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h5 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-col a:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--divider);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-secondary);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

/* --- Responsive Adjustments --- */
@media (max-width: 900px) {
  .feature-split {
    flex-direction: column;
    gap: 40px;
  }
  
  .feature-image-panel {
    width: 100%;
    min-height: 360px;
    padding: 30px;
  }

  .infrastructure-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .trust-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

@media (max-width: 768px) {
  /* Prevent horizontal overflow globally */
  body, html {
    overflow-x: hidden;
  }

  .section {
    padding: 60px 0;
  }

  .section-content {
    padding: 0 20px;
  }

  /* Navigation Overrides & Hamburger Menu */
  .nav-cta {
    margin-left: auto;
    margin-right: 16px;
    font-size: 13px;
    padding: 6px 14px;
    border: 1px solid rgba(0, 102, 204, 0.25);
    border-radius: 980px;
  }

  .nav-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 22px;
    height: 15px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 0;
  }

  .nav-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
  }

  .nav-hamburger.active span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }
  
  .nav-hamburger.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav-hamburger.active span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .nav-links {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 32px;
    padding: 80px 24px;
    z-index: 999;
    transform: translateY(-100%);
    transition: transform 0.4s cubic-bezier(0.28, 0.11, 0.32, 1);
    list-style: none;
  }

  .nav-links.active {
    transform: translateY(0);
  }

  .nav-links li a {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
  }

  .nav-links li a:hover {
    color: var(--accent-blue);
  }

  .nav-brand {
    font-size: 14px;
  }

  /* Hero Section: Responsive Ordering & Spacing */
  .hero-section {
    min-height: auto;
    padding: 100px 0 50px 0;
    display: flex;
    flex-direction: column;
    /* Soft, high-end radial light background to lift the page design */
    background: radial-gradient(circle at top, rgba(0, 102, 204, 0.05) 0%, rgba(255, 255, 255, 0) 75%), var(--bg-secondary);
  }

  .hero-tag {
    order: 1;
  }

  .hero-heading {
    order: 2;
    font-size: 34px;
    line-height: 1.15;
    letter-spacing: -0.03em;
    font-weight: 800;
    margin-bottom: 16px;
    padding: 0 16px;
  }

  .hero-subheading {
    order: 3;
    font-size: 15px;
    line-height: 1.45;
    margin-bottom: 28px;
    padding: 0 16px;
    color: var(--text-secondary);
  }

  /* Visual image container positioned above CTAs */
  .hero-visual-wrapper {
    order: 4;
    width: 92%;
    margin-top: 15px;
    margin-bottom: 30px;
  }

  .hero-visual-container {
    border-radius: 24px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
  }

  .hero-visual-glow {
    top: -5%;
    left: -5%;
    width: 110%;
    height: 110%;
    filter: blur(30px);
  }

  /* CTA buttons positioned below the visual image */
  .hero-ctas {
    order: 5;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 0 20px;
    margin-bottom: 10px;
  }

  .hero-ctas .btn-primary {
    width: 100%;
    max-width: 280px;
    padding: 14px 24px;
    font-size: 16px;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 8px 24px rgba(0, 102, 204, 0.12);
  }

  .hero-ctas .btn-link {
    width: 100%;
    max-width: 280px;
    padding: 12px 24px;
    font-size: 16px;
    justify-content: center;
    display: inline-flex;
  }

  /* Product Cards Grid Sizing */
  .lineup-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .product-card {
    padding: 24px;
    min-height: 450px;
    border-radius: 24px;
  }

  .product-card-title {
    font-size: 20px;
  }

  .product-card-desc {
    font-size: 13px;
  }

  /* Category Filter Selector - Horizontal Swipable Row */
  .compare-selector {
    justify-content: flex-start;
    overflow-x: auto;
    padding: 10px 20px;
    margin: 0 -20px 24px -20px;
    gap: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Hide scrollbars for clean UI */
  }

  .compare-selector::-webkit-scrollbar {
    display: none;
  }

  .compare-btn {
    flex-shrink: 0;
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 20px;
  }

  /* Comparison Model Columns */
  .compare-layout-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .compare-col {
    padding: 24px;
    border-radius: 20px;
    max-width: 100% !important; /* Let cards take full horizontal viewport space */
  }

  /* Statistics Row Sizing */
  .trust-strip {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px;
    margin-top: 40px;
    padding-top: 40px;
  }

  .trust-number {
    font-size: 32px;
    margin-bottom: 4px;
  }

  .trust-label {
    font-size: 11px;
  }

  .trust-desc {
    font-size: 12px;
    max-width: 100%;
  }

  /* Certification Logo Badges - Symmetrical Grid */
  .cert-logos-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 36px;
  }

  .cert-logo-box {
    min-width: 0;
    padding: 16px 20px;
    border-radius: 14px;
  }

  .cert-logo-name {
    font-size: 13px;
  }

  .cert-logo-sub {
    font-size: 10px;
    margin-top: 2px;
  }

  /* Form Layout (Stack input fields vertically) */
  .form-row {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 16px;
  }

  .form-group {
    margin-bottom: 16px;
  }

  .contact-form-panel {
    padding: 24px;
    border-radius: 20px;
  }

  /* Modal Layout & Left-Right Scroll Prevention */
  .modal-content-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .modal-body {
    padding: 24px;
    overflow-x: hidden; /* Lock horizontal layout shifts */
  }

  /* Table Horizontal Scrolling within the Spec Panel Card */
  .modal-spec-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 16px -4px 0 -4px;
  }

  .spec-table {
    min-width: 460px; /* Lock columns width so table remains highly readable */
  }

  /* Custom Modal Slider Padding Optimization */
  .slide {
    padding: 24px 16px; /* Free up space for product images */
  }

  .slide img {
    height: auto;
    max-height: 200px; /* Adjust height to prevent vertical modal expansion */
    width: auto;
    max-width: 100%;
    flex-shrink: 0;
  }

  .modal-visual-slider {
    min-height: 280px;
  }

  .modal-action-bar {
    padding: 16px 20px;
    flex-direction: column;
    gap: 16px;
    align-items: stretch;
    text-align: center;
  }

  .modal-action-bar .btn-primary {
    width: 100%;
  }

  /* Footer Layout */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-bottom-links {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
}

/* --- Apple Guided Tour Card & Collage --- */
.guided-tour-card {
  width: 100%;
  max-width: 900px;
  height: 400px;
  border-radius: 28px;
  position: relative;
  overflow: hidden;
  margin-top: 40px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.06);
}

.tour-bg-split {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  z-index: 1;
}

.tour-bg-left {
  flex: 1.1;
  background-color: #E9EEF2;
}

.tour-bg-right {
  flex: 0.9;
  background: linear-gradient(135deg, #F5A623 0%, #D86F15 100%);
}

.tour-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

.tour-presenter {
  height: 110%;
  width: auto;
  object-fit: contain;
  margin-right: -40px;
  transform: translateY(10px);
  filter: drop-shadow(0 10px 20px rgba(0,0,0,0.15));
  mix-blend-mode: multiply;
}

.tour-fan {
  height: 90%;
  width: auto;
  object-fit: contain;
  transform: translateY(10px) translateX(20px);
  filter: drop-shadow(0 15px 30px rgba(0,0,0,0.2));
  mix-blend-mode: multiply;
}

.tour-overlay-cta {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background-color: rgba(29, 29, 31, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--bg-secondary);
  padding: 10px 20px;
  border-radius: 980px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-medium);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.tour-overlay-cta:hover {
  background-color: var(--text-primary);
  transform: scale(1.02);
}

.play-icon-circle {
  width: 28px;
  height: 28px;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-left: 2px;
}

/* Full Width Collage */
.group-lineup-collage {
  width: 100%;
  max-width: 900px;
  margin: 80px auto 20px auto;
  text-align: center;
  position: relative;
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeIn 1.2s var(--apple-ease) 0.6s forwards;
}

.group-lineup-img {
  width: 100%;
  max-height: 480px;
  object-fit: contain;
  filter: drop-shadow(0 15px 30px rgba(0,0,0,0.08));
}

/* Floating WhatsApp Widget */
.whatsapp-float {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.3);
  z-index: 999;
  transition: var(--transition-medium);
  cursor: pointer;
  animation: whatsappPulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.08) translateY(-4px);
  background-color: #20BA5A;
  box-shadow: 0 14px 30px rgba(37, 211, 102, 0.4);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

@keyframes whatsappPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
  }
  .whatsapp-float svg {
    width: 26px;
    height: 26px;
  }
}