/* ==========================================================================
   EVSTRONG — DESIGN SYSTEM & CORE STYLES
   High-Voltage Protection. Built for EV Technicians.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800;900&family=Space+Grotesk:wght@500;600;700&display=swap');

:root {
  /* Color Palette - Dark Technical Foundation */
  --bg-primary: #080A0F;
  --bg-surface: #0E131C;
  --bg-surface-elevated: #151C28;
  --bg-card: rgba(18, 24, 35, 0.7);
  --bg-card-hover: rgba(26, 35, 52, 0.85);

  /* Technical Accent - High Voltage Orange (cables / interlocks) */
  --accent-orange: #FF5A1F;
  --accent-orange-hover: #FF7038;
  --accent-orange-glow: rgba(255, 90, 31, 0.25);
  --accent-orange-subtle: rgba(255, 90, 31, 0.1);

  /* High Voltage Electric Secondary & Yellow */
  --accent-blue: #00D2FF;
  --accent-blue-subtle: rgba(0, 210, 255, 0.12);
  --dielectric-yellow: #FFD200;
  --dielectric-yellow-subtle: rgba(255, 210, 0, 0.12);

  /* Text Hierarchy */
  --text-primary: #F3F4F6;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --text-inverse: #080A0F;

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.15);
  --border-accent: rgba(255, 90, 31, 0.4);
  --border-active: #FF5A1F;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Space Grotesk', 'SFMono-Regular', Consolas, monospace;

  /* Shadows & Elevations */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.75);
  --shadow-glow: 0 0 30px var(--accent-orange-glow);

  /* Layout & Spacing */
  --max-width: 1280px;
  --max-width-narrow: 960px;
  --header-height: 80px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Subtle Technical Grid Background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(255, 90, 31, 0.04) 0%, transparent 60%),
    linear-gradient(to right, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  pointer-events: none;
  z-index: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.15;
  color: #FFFFFF;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  text-transform: uppercase;
}

h2 {
  font-size: clamp(1.85rem, 3.5vw, 2.75rem);
  text-transform: uppercase;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.6rem);
}

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.65;
}

.mono {
  font-family: var(--font-mono);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-orange);
  margin-bottom: 1rem;
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--accent-orange);
  border-radius: 2px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
  position: relative;
  z-index: 1;
}

.container-narrow {
  max-width: var(--max-width-narrow);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(8, 10, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  transition: background var(--transition-normal), border-color var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(8, 10, 15, 0.95);
  border-bottom: 1px solid var(--border-medium);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  height: 38px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}

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

.nav-link.active::after,
.nav-link:hover::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-orange);
  box-shadow: 0 0 8px var(--accent-orange);
}

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

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--text-primary);
}

.mobile-toggle svg {
  width: 26px;
  height: 26px;
  stroke: var(--text-primary);
}

/* ==========================================================================
   BUTTONS & CTAS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-orange);
  color: #FFFFFF;
  box-shadow: 0 2px 14px var(--accent-orange-glow);
}

.btn-primary:hover {
  background: var(--accent-orange-hover);
  box-shadow: 0 4px 22px rgba(255, 90, 31, 0.45);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: #FFFFFF;
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #FFFFFF;
  transform: translateY(-1px);
}

.btn-outline-accent {
  background: transparent;
  color: var(--accent-orange);
  border: 1px solid var(--border-accent);
}

.btn-outline-accent:hover {
  background: var(--accent-orange-subtle);
  border-color: var(--accent-orange);
  color: #FFFFFF;
}

.btn-lg {
  padding: 1.05rem 2.2rem;
  font-size: 0.95rem;
}

.btn-sm {
  padding: 0.55rem 1rem;
  font-size: 0.8rem;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
  position: relative;
  padding-top: 3.5rem;
  padding-bottom: 5rem;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  z-index: 2;
}

.hero-title {
  margin-bottom: 1.5rem;
}

.hero-title .highlight {
  color: var(--accent-orange);
  display: block;
}

.hero-subtext {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 2.25rem;
  max-width: 560px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-bottom: 0;
}

.hero-assurance {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.assurance-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.assurance-item svg {
  color: var(--accent-orange);
  width: 15px;
  height: 15px;
}

.hero-visual {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-visual::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 110%;
  height: 110%;
  background: radial-gradient(circle, rgba(255, 90, 31, 0.09) 0%, transparent 65%);
  z-index: -1;
  pointer-events: none;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.85), 0 0 50px rgba(255, 90, 31, 0.08);
}

.hero-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.hero-image-wrapper:hover img {
  transform: scale(1.02);
}

/* Floating Technical Callouts */
.hero-badge-overlay {
  position: absolute;
  bottom: 20px;
  left: 20px;
  background: rgba(8, 10, 15, 0.88);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-accent);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 14px;
}

.hero-badge-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-orange-subtle);
  border: 1px solid var(--accent-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-orange);
}

.hero-badge-title {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 700;
  color: #FFFFFF;
  text-transform: uppercase;
}

.hero-badge-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-orange);
  letter-spacing: 0.05em;
}

/* ==========================================================================
   PRODUCT FACT BAR (Section 11)
   ========================================================================== */

.fact-bar-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  z-index: 5;
}

.fact-bar-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}

.fact-card {
  padding: 1.5rem 0.75rem;
  text-align: center;
  border-right: 1px solid var(--border-subtle);
  transition: background var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.fact-card:last-child {
  border-right: none;
}

.fact-card:hover {
  background: rgba(255, 255, 255, 0.02);
}

.fact-value {
  font-family: var(--font-heading);
  font-size: clamp(1.15rem, 1.45vw, 1.6rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #FFFFFF;
  margin-bottom: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  gap: 5px;
}

.fact-value .accent-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--accent-orange);
  flex-shrink: 0;
  display: inline-block;
}

.fact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ==========================================================================
   FLAGSHIP PRODUCT SECTION (Section 12)
   ========================================================================== */

.section-spacing {
  padding-block: 6.5rem;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}

.section-header.left-aligned {
  text-align: left;
  margin-inline: 0;
}

.section-subtext {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-top: 1rem;
}

.flagship-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.component-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.component-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 0 25px var(--accent-orange-subtle);
}

.component-card-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #0B0E14;
}

.component-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.component-card:hover .component-card-image img {
  transform: scale(1.05);
}

.component-index {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(8, 10, 15, 0.85);
  backdrop-filter: blur(8px);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-orange);
  border: 1px solid rgba(255, 90, 31, 0.3);
}

.component-card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.component-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #FFFFFF;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.component-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.component-specs {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.spec-pill {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

/* ==========================================================================
   PRODUCT FEATURES SECTION (Section 13)
   ========================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.feature-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2.25rem 1.75rem;
  position: relative;
  transition: all var(--transition-normal);
}

.feature-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--accent-orange);
  transition: width var(--transition-normal);
}

.feature-box:hover {
  border-color: var(--border-medium);
  background: var(--bg-surface-elevated);
  transform: translateY(-2px);
}

.feature-box:hover::before {
  width: 100%;
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-orange);
  margin-bottom: 1.5rem;
}

.feature-icon-wrapper svg {
  width: 24px;
  height: 24px;
}

.feature-title {
  font-size: 1.15rem;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  color: #FFFFFF;
}

.feature-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ==========================================================================
   WHY EV TECHNICIANS (Section 14)
   ========================================================================== */

.why-ev-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, #0B0E14 100%);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.why-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem 1.75rem;
  transition: all var(--transition-normal);
}

.why-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-md);
}

.why-card-number {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-orange);
  margin-bottom: 1rem;
}

.why-card-title {
  font-size: 1.15rem;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  color: #FFFFFF;
}

.why-card-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   APPLICATIONS SECTION (Section 15)
   ========================================================================== */

.apps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.app-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--border-subtle);
  background: #0B0E14;
  group: hover;
}

.app-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.app-card:hover img {
  transform: scale(1.06);
}

.app-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 10, 15, 0.1) 0%, rgba(8, 10, 15, 0.88) 85%);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-radius: inherit;
  transition: background var(--transition-fast);
}

.app-card:hover .app-card-overlay {
  background: linear-gradient(180deg, rgba(8, 10, 15, 0.2) 0%, rgba(8, 10, 15, 0.94) 75%);
}

.app-card-title {
  font-size: 1.2rem;
  font-weight: 800;
  text-transform: uppercase;
  color: #FFFFFF;
  margin-bottom: 0.35rem;
}

.app-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  opacity: 0.9;
}

/* ==========================================================================
   TECHNICIAN PHOTOGRAPHY SECTION (Section 16)
   ========================================================================== */

.tech-photo-section {
  position: relative;
  overflow: hidden;
}

.tech-banner-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: stretch;
}

.tech-banner-large {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  min-height: 480px;
}

.tech-banner-large img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tech-banner-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2.5rem;
  background: linear-gradient(180deg, transparent 0%, rgba(8, 10, 15, 0.92) 50%, rgba(8, 10, 15, 0.98) 100%);
}

.tech-banner-side {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.tech-sub-banner {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  flex: 1;
}

.tech-sub-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tech-sub-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(180deg, transparent 0%, rgba(8, 10, 15, 0.9) 70%);
}

/* ==========================================================================
   TECHNICAL SPECIFICATIONS TABLE (Section 18)
   ========================================================================== */

.specs-table-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

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

.specs-table th {
  background: rgba(255, 255, 255, 0.03);
  padding: 1.25rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
}

.specs-table td {
  padding: 1.15rem 2rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.98rem;
}

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

.specs-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.specs-spec-name {
  font-weight: 600;
  color: #FFFFFF;
  width: 45%;
}

.specs-spec-val {
  font-family: var(--font-mono);
  color: var(--accent-orange);
  font-weight: 600;
}

/* ==========================================================================
   WHAT'S IN THE KIT (Section 19)
   ========================================================================== */

.kit-breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.kit-item-row {
  display: grid;
  grid-template-columns: 120px 1.2fr 1fr;
  gap: 2.5rem;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  transition: border-color var(--transition-normal);
}

.kit-item-row:hover {
  border-color: var(--border-accent);
}

.kit-big-number {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 900;
  color: var(--accent-orange);
  line-height: 1;
}

.kit-item-info h3 {
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.kit-item-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  aspect-ratio: 4 / 3;
}

.kit-item-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   SIZING SELECTOR (Section 20)
   ========================================================================== */

.sizing-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
}

.size-selector-grid {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-block: 1.5rem;
}

.size-btn {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.size-btn:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}

.size-btn.active {
  background: var(--accent-orange);
  border-color: var(--accent-orange);
  color: #FFFFFF;
  box-shadow: 0 0 16px var(--accent-orange-glow);
}

.size-feedback-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-top: 1.5rem;
}

/* ==========================================================================
   STANDARDS SECTION (Section 21)
   ========================================================================== */

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

.standard-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  transition: all var(--transition-normal);
}

.standard-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
}

.standard-code {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-orange);
  margin-bottom: 0.75rem;
}

.standard-title {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.standard-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ==========================================================================
   SAFETY PROTOCOL SECTION (Section 22)
   ========================================================================== */

.safety-container {
  background: linear-gradient(135deg, rgba(255, 90, 31, 0.05) 0%, rgba(14, 19, 28, 0.8) 100%);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
}

.safety-rules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2.5rem;
}

.safety-rule-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.safety-rule-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--accent-orange-subtle);
  color: var(--accent-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.safety-rule-icon svg {
  width: 18px;
  height: 18px;
}

.safety-rule-title {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.35rem;
}

.safety-rule-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   B2B SECTION (Section 23)
   ========================================================================== */

.b2b-sectors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-block: 3rem;
}

.sector-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  transition: all var(--transition-normal);
}

.sector-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-surface-elevated);
}

.sector-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-orange);
  flex-shrink: 0;
}

.sector-icon svg {
  width: 22px;
  height: 22px;
}

.sector-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
  text-transform: uppercase;
}

/* ==========================================================================
   QUOTE & CONTACT FORMS (Section 24 & 27)
   ========================================================================== */

.form-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

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

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 0.82rem;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.form-control {
  background: #080A0F;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: #FFFFFF;
  font-size: 0.95rem;
  outline: none;
  transition: all var(--transition-fast);
}

.form-control:focus {
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 2px var(--accent-orange-glow);
}

.form-control option {
  background: #0E131C;
  color: #FFFFFF;
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-submit-row {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
}

.form-note {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Form Success State */
.form-success-banner {
  display: none;
  background: rgba(0, 210, 255, 0.08);
  border: 1px solid var(--accent-blue);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
}

.form-success-banner.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.form-success-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(0, 210, 255, 0.2);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

/* ==========================================================================
   FAQ ACCORDION (Section 25)
   ========================================================================== */

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--border-accent);
}

.faq-question-btn {
  width: 100%;
  padding: 1.5rem 2rem;
  background: transparent;
  border: none;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
}

.faq-question-btn svg {
  width: 20px;
  height: 20px;
  color: var(--accent-orange);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item.active .faq-question-btn svg {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
  padding-inline: 2rem;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding-bottom: 1.5rem;
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   FOOTER (Section 29)
   ========================================================================== */

.site-footer {
  background: #05070A;
  border-top: 1px solid var(--border-subtle);
  padding-top: 5rem;
  padding-bottom: 3rem;
  position: relative;
  z-index: 10;
}

.footer-top-cta {
  background: var(--bg-surface);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 5rem;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(4, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 1rem;
  max-width: 300px;
}

.footer-column-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #FFFFFF;
  margin-bottom: 1.25rem;
}

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

.footer-nav-list a {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.footer-nav-list a:hover {
  color: var(--accent-orange);
}

.footer-bottom-bar {
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ==========================================================================
   PRODUCT PAGE GALLERY (Section 17)
   ========================================================================== */

.product-detail-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: flex-start;
}

.gallery-main {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: #0B0E14;
  aspect-ratio: 4 / 3;
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-fast);
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-top: 1rem;
}

.thumb-btn {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid transparent;
  background: var(--bg-surface);
  cursor: pointer;
  padding: 0;
  transition: border-color var(--transition-fast);
}

.thumb-btn.active {
  border-color: var(--accent-orange);
}

.thumb-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Product Info Sidebar */
.product-info-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.product-spec-pills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-pill {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: #FFFFFF;
}

.product-pill.highlight {
  border-color: var(--border-accent);
  color: var(--accent-orange);
}

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

/* ==========================================================================
   RESPONSIVE DESIGN (Section 31)
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .fact-bar-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .flagship-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .apps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .standards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .safety-rules-grid {
    grid-template-columns: 1fr;
  }
  .b2b-sectors-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-detail-grid {
    grid-template-columns: 1fr;
  }
  .footer-links-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-top-cta {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }
  .usa-facility-grid {
    grid-template-columns: 1fr !important;
    gap: 2.5rem !important;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
  .main-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background: rgba(8, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 2rem 1.5rem;
    overflow-y: auto;
    z-index: 99;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 1.25rem;
  }
  .nav-link {
    font-size: 1.2rem;
  }
  .nav-actions {
    width: 100%;
    margin-top: 1.5rem;
  }
  .nav-actions .btn {
    width: 100%;
  }
  .mobile-toggle {
    display: block;
  }
  .fact-bar-grid {
    grid-template-columns: 1fr 1fr;
  }
  .fact-card:last-child {
    grid-column: 1 / -1;
  }
  .features-grid,
  .why-grid,
  .apps-grid,
  .standards-grid,
  .b2b-sectors-grid {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .tech-banner-grid {
    grid-template-columns: 1fr;
  }
  .kit-item-row {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .footer-links-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   PRICING & COMMERCE MODULE ($175 KIT)
   ========================================================================== */

.product-price-block {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: rgba(255, 90, 31, 0.06);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  margin-block: 0.75rem;
}

.price-main {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-currency {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-orange);
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1;
  color: #FFFFFF;
}

.price-period {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.price-status-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: #10B981;
  background: rgba(16, 185, 129, 0.1);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.status-indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10B981;
  box-shadow: 0 0 8px #10B981;
}

.product-quantity-selector {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.25rem;
  margin-block: 0.75rem;
}

.qty-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.qty-stepper {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.qty-btn {
  width: 38px;
  height: 38px;
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.qty-btn:hover {
  background: rgba(255, 90, 31, 0.15);
  color: var(--accent-orange);
}

.qty-stepper input {
  width: 48px;
  height: 38px;
  background: transparent;
  border: none;
  text-align: center;
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
}

.qty-total-display {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.qty-total-display strong {
  color: #FFFFFF;
  font-size: 1.15rem;
}

/* Donning Guide Layout */
.donning-guide-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.donning-steps-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.donning-step-item {
  display: flex;
  gap: 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color var(--transition-fast);
}

.donning-step-item:hover {
  border-color: var(--border-accent);
}

.donning-step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-orange-subtle);
  border: 1px solid var(--accent-orange);
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Quick Order Modal */
.order-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(4, 6, 10, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.order-modal-backdrop.active {
  display: flex;
  animation: fadeIn 0.25s ease;
}

.order-modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  max-width: 580px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.5rem;
  box-shadow: var(--shadow-lg), 0 0 50px var(--accent-orange-glow);
  position: relative;
}

.order-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
}

.order-modal-close:hover {
  color: #FFFFFF;
}