/* ============================================================
   EV BATTERY SAFETY — Page-Specific Styles
   Extends the base design system from styles.css
   ============================================================ */

/* ============================================================
   HERO — EV SPECIFIC
   ============================================================ */
.ev-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 80px;
  overflow: hidden;
}

.ev-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.ev-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.ev-hero__bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,12,16,0.92) 0%, rgba(10,12,16,0.7) 50%, rgba(10,12,16,0.85) 100%);
}

.ev-hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.ev-hero__glow {
  position: absolute;
  top: 20%;
  right: 10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,81,45,0.08) 0%, transparent 70%);
  filter: blur(80px);
  z-index: 0;
  animation: heroGlowPulse 6s ease-in-out infinite alternate;
}

@keyframes heroGlowPulse {
  0% { opacity: 0.5; transform: scale(1); }
  100% { opacity: 0.8; transform: scale(1.1); }
}

.ev-hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.ev-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.ev-hero__breadcrumb a {
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
}

.ev-hero__breadcrumb a:hover {
  color: var(--accent-heat-light);
}

.ev-hero__breadcrumb svg {
  width: 12px;
  height: 12px;
  color: var(--text-muted);
}

.ev-hero__breadcrumb span {
  color: var(--accent-heat-light);
}

.ev-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(232, 81, 45, 0.1);
  border: 1px solid rgba(232, 81, 45, 0.2);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--accent-heat-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.ev-hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-heat);
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.ev-hero__title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.ev-hero__subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 680px;
}

.ev-hero__metrics {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 40px;
  padding: 20px 28px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.ev-hero__metric {
  text-align: center;
}

.ev-hero__metric-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-heat);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.ev-hero__metric-label {
  font-size: 0.6875rem;
  color: var(--text-tertiary);
  margin-top: 4px;
  letter-spacing: 0.02em;
}

.ev-hero__metric-sep {
  width: 1px;
  height: 40px;
  background: var(--border-subtle);
}

.ev-hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ============================================================
   STICKY SECTION NAV
   ============================================================ */
.ev-section-nav {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(10, 12, 16, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0;
  transition: all var(--transition-base);
}

.ev-section-nav__inner {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.ev-section-nav__inner::-webkit-scrollbar {
  display: none;
}

.ev-section-nav__link {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  padding: 14px 16px;
  white-space: nowrap;
  transition: all var(--transition-fast);
  border-bottom: 2px solid transparent;
  letter-spacing: 0.01em;
}

.ev-section-nav__link:hover {
  color: var(--text-primary);
}

.ev-section-nav__link.active {
  color: var(--accent-heat-light);
  border-bottom-color: var(--accent-heat);
}

/* ============================================================
   CHALLENGE SECTION
   ============================================================ */
.ev-challenge__visual {
  margin: 48px 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.ev-challenge__visual img {
  width: 100%;
  display: block;
}

.ev-challenge__stages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.ev-stage {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: all var(--transition-base);
}

.ev-stage:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.ev-stage__number {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.ev-stage__indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-bottom: 16px;
}

.ev-stage__indicator--warning {
  background: #f59e0b;
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.3);
}

.ev-stage__indicator--danger {
  background: #ef4444;
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.3);
}

.ev-stage__indicator--critical {
  background: #dc2626;
  box-shadow: 0 0 16px rgba(220, 38, 38, 0.4);
  animation: criticalPulse 1.5s ease-in-out infinite;
}

@keyframes criticalPulse {
  0%, 100% { box-shadow: 0 0 16px rgba(220, 38, 38, 0.4); }
  50% { box-shadow: 0 0 24px rgba(220, 38, 38, 0.6); }
}

.ev-stage__title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.ev-stage__desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.ev-stage__metric {
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.ev-stage__metric-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-heat-light);
}

.ev-stage__metric-label {
  display: block;
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.ev-challenge__callout {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 28px 32px;
  background: rgba(232, 81, 45, 0.06);
  border: 1px solid rgba(232, 81, 45, 0.15);
  border-radius: var(--radius-lg);
}

.ev-challenge__callout-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-heat-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.ev-challenge__callout-content {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.ev-challenge__callout-content strong {
  color: var(--text-primary);
}

/* ============================================================
   WHY THIN MATTERS
   ============================================================ */
.ev-thin__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.ev-thin__points {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 32px;
}

.ev-thin__point {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.ev-thin__point-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.ev-thin__point h5 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.ev-thin__point p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.ev-thin__comparison {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.ev-thin__bar-group {
  margin-bottom: 20px;
}

.ev-thin__bar-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.ev-thin__bar {
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.ev-thin__bar--conventional {
  background: linear-gradient(90deg, #4b5563, #6b7280);
}

.ev-thin__bar--standard {
  background: linear-gradient(90deg, #6366f1, #818cf8);
}

.ev-thin__bar--levron {
  background: var(--gradient-heat);
  box-shadow: 0 0 20px rgba(232, 81, 45, 0.3);
}

.ev-thin__bar-note {
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-top: 24px;
  text-align: center;
  font-style: italic;
}

/* ============================================================
   SOLUTION OVERVIEW
   ============================================================ */
.ev-solution__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ev-solution__card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.ev-solution__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-heat);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.ev-solution__card:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.ev-solution__card:hover::before {
  opacity: 1;
}

.ev-solution__card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(232, 81, 45, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.ev-solution__card-icon svg {
  width: 22px;
  height: 22px;
  color: var(--accent-heat-light);
}

.ev-solution__card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.ev-solution__card p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.ev-solution__card-metric {
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 700;
  background: var(--gradient-heat);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ev-solution__card-metric span {
  font-size: 0.75rem;
  opacity: 0.7;
}

/* ============================================================
   PERFORMANCE CARDS
   ============================================================ */
.ev-perf__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.ev-perf__card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
}

.ev-perf__card:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-2px);
}

.ev-perf__card--highlight {
  grid-column: span 2;
  background: var(--gradient-heat-subtle);
  border-color: rgba(232, 81, 45, 0.15);
}

.ev-perf__card-header {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.ev-perf__card-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-heat);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.ev-perf__card-unit {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-top: 4px;
  margin-bottom: 16px;
}

.ev-perf__card-desc {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.ev-perf__card-detail {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent-heat-light);
  padding: 8px 12px;
  background: rgba(232, 81, 45, 0.06);
  border-radius: var(--radius-sm);
}

/* ============================================================
   COMPARISON TABLE OVERRIDE
   ============================================================ */
.ev-comparison__table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
}

.comparison__col--highlight {
  background: rgba(232, 81, 45, 0.06) !important;
  color: var(--accent-heat-light) !important;
}

.ev-comparison__note {
  margin-top: 24px;
  text-align: center;
}

.ev-comparison__note p {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ============================================================
   MATERIAL SCIENCE
   ============================================================ */
.ev-science__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.ev-science__blocks {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 32px;
}

.ev-science__block {
  padding: 24px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.ev-science__block:hover {
  border-color: rgba(232, 81, 45, 0.12);
}

.ev-science__block h5 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.ev-science__block p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.ev-science__visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.ev-science__visual img {
  width: 100%;
  display: block;
}

/* ============================================================
   INTEGRATION ZONES
   ============================================================ */
.ev-integration__visual {
  margin-bottom: 48px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.ev-integration__visual img {
  width: 100%;
  display: block;
}

.ev-integration__zones {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.ev-zone {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
}

.ev-zone:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.ev-zone__number {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--accent-heat-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.ev-zone__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.ev-zone__desc {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.ev-zone__specs {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ev-zone__specs span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* ============================================================
   FIRE & MOISTURE SECTION
   ============================================================ */
.ev-fire__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.ev-fire__visual {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.ev-fire__visual img {
  width: 100%;
  display: block;
}

.ev-fire__story {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 32px;
}

.ev-fire__story-block {
  padding: 24px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.ev-fire__story-block h5 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.ev-fire__story-block p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.ev-fire__story-metric {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.ev-fire__metric-highlight {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--accent-heat-light);
}

.ev-fire__metric-vs {
  font-size: 0.6875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ev-fire__metric-compare {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-tertiary);
}

/* ============================================================
   WHY LEVRON PILLARS
   ============================================================ */
.ev-why__pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.ev-why__pillar {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
}

.ev-why__pillar:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-3px);
}

.ev-why__pillar-number {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-heat);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1;
}

.ev-why__pillar h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.ev-why__pillar p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ============================================================
   VALIDATION FLOW
   ============================================================ */
.ev-validation__flow {
  display: flex;
  gap: 0;
  position: relative;
}

.ev-validation__step {
  flex: 1;
  text-align: center;
  padding: 32px 20px;
  position: relative;
}

.ev-validation__step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-heat);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
  margin: 0 auto 20px;
  position: relative;
  z-index: 2;
}

.ev-validation__step-line {
  position: absolute;
  top: 55px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--border-medium);
  z-index: 1;
}

.ev-validation__step:last-child .ev-validation__step-line {
  display: none;
}

.ev-validation__step h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.ev-validation__step p {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ============================================================
   RESOURCE LIBRARY
   ============================================================ */
.ev-resources__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 64px;
}

.ev-resource {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
}

.ev-resource:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-2px);
}

.ev-resource__icon {
  font-size: 1.75rem;
  margin-bottom: 16px;
}

.ev-resource h5 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.ev-resource p {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.ev-resource__link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-heat-light);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}

.ev-resource__link:hover {
  color: var(--accent-heat);
}

/* ============================================================
   FAQ ACCORDION
   ============================================================ */
.ev-faq {
  max-width: 800px;
  margin: 0 auto;
}

.ev-faq__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  text-align: center;
}

.ev-faq__item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  overflow: hidden;
  transition: all var(--transition-base);
}

.ev-faq__item[open] {
  border-color: rgba(232, 81, 45, 0.15);
}

.ev-faq__item summary {
  padding: 18px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition-fast);
}

.ev-faq__item summary:hover {
  background: rgba(255, 255, 255, 0.02);
}

.ev-faq__item summary::-webkit-details-marker {
  display: none;
}

.ev-faq__item summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--accent-heat-light);
  flex-shrink: 0;
  margin-left: 16px;
  transition: transform var(--transition-fast);
}

.ev-faq__item[open] summary::after {
  content: '−';
}

.ev-faq__item p {
  padding: 0 24px 20px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ============================================================
   FINAL CTA BLOCK
   ============================================================ */
.ev-final-cta {
  position: relative;
  overflow: hidden;
}

.ev-final-cta__bg-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center top, rgba(232, 81, 45, 0.08) 0%, transparent 60%);
}

.ev-final-cta__paths {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.ev-cta-path {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px 28px 28px;
  text-align: center;
  transition: all var(--transition-base);
}

.ev-cta-path:hover {
  border-color: rgba(232, 81, 45, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-heat);
}

.ev-cta-path__icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(232, 81, 45, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.ev-cta-path__icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent-heat-light);
}

.ev-cta-path h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.ev-cta-path p {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* Active nav link */
.header__nav-link--active {
  color: var(--accent-heat-light) !important;
}

.nav-dropdown__link--active {
  color: var(--accent-heat-light) !important;
  background: rgba(232, 81, 45, 0.06);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .ev-perf__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ev-perf__card--highlight {
    grid-column: span 2;
  }

  .ev-integration__zones {
    grid-template-columns: repeat(2, 1fr);
  }

  .ev-why__pillars {
    grid-template-columns: repeat(2, 1fr);
  }

  .ev-final-cta__paths {
    grid-template-columns: repeat(2, 1fr);
  }

  .ev-validation__flow {
    flex-direction: column;
    gap: 0;
  }

  .ev-validation__step-line {
    display: none !important;
  }

  .ev-validation__step {
    text-align: left;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    gap: 20px;
    align-items: flex-start;
  }

  .ev-validation__step-number {
    margin: 0;
    flex-shrink: 0;
  }
}

@media (max-width: 768px) {
  .ev-challenge__stages {
    grid-template-columns: 1fr;
  }

  .ev-thin__grid,
  .ev-science__grid,
  .ev-fire__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .ev-solution__grid {
    grid-template-columns: 1fr;
  }

  .ev-perf__grid {
    grid-template-columns: 1fr;
  }

  .ev-perf__card--highlight {
    grid-column: span 1;
  }

  .ev-integration__zones {
    grid-template-columns: 1fr;
  }

  .ev-why__pillars {
    grid-template-columns: 1fr;
  }

  .ev-resources__grid {
    grid-template-columns: 1fr;
  }

  .ev-final-cta__paths {
    grid-template-columns: 1fr;
  }

  .ev-hero__metrics {
    flex-direction: column;
    gap: 16px;
  }

  .ev-hero__metric-sep {
    width: 60px;
    height: 1px;
  }

  .ev-hero__actions {
    flex-direction: column;
  }

  .ev-hero__actions .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .ev-hero__title {
    font-size: 2rem;
  }

  .ev-hero__badge {
    font-size: 0.5625rem;
  }
}