/* ============================================================
   ENERGY STORAGE SYSTEMS INDUSTRY — Page-Specific Styles
   Extends the base design system from styles.css
   ESS-specific palette: graphite black, deep steel gray,
   battery-tech blue-gray, thermal amber, infrastructure green-blue
   ============================================================ */

/* --- ESS-Specific Custom Properties --- */
:root {
  --essi-blue: #2563EB;
  --essi-blue-light: #3B82F6;
  --essi-blue-gray: #475569;
  --essi-green: #10B981;
  --essi-teal: #0D9488;
  --essi-amber: #F59E0B;
  --essi-orange: #EA580C;
  --essi-red: #DC2626;
  --essi-gradient: linear-gradient(135deg, #1E293B 0%, #334155 100%);
  --essi-gradient-warm: linear-gradient(135deg, #EA580C 0%, #F59E0B 100%);
  --essi-bg-card: rgba(30, 41, 59, 0.4);
}

/* ============================================================
   1. HERO — ESS INDUSTRY
   ============================================================ */
.essi-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  padding-bottom: 80px;
  overflow: hidden;
  background-color: var(--bg-body);
}

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

.essi-hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(71, 85, 105, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(71, 85, 105, 0.05) 1px, transparent 1px);
  background-size: 80px 80px;
}

/* Thermal field background effect */
.essi-hero__thermal-field {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.essi-hero__heat-zone {
  position: absolute;
  top: 15%;
  left: -5%;
  width: 40%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(234,88,12,0.06) 0%, transparent 70%);
  filter: blur(80px);
  animation: essiPulse 10s ease-in-out infinite alternate;
}

.essi-hero__barrier-zone {
  position: absolute;
  top: 25%;
  left: 30%;
  width: 35%;
  height: 50%;
  background: radial-gradient(ellipse, rgba(71,85,105,0.08) 0%, transparent 70%);
  filter: blur(80px);
  animation: essiPulse 12s ease-in-out infinite alternate-reverse;
}

.essi-hero__safe-zone {
  position: absolute;
  top: 20%;
  right: -5%;
  width: 35%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(16,185,129,0.04) 0%, transparent 70%);
  filter: blur(80px);
  animation: essiPulse 11s ease-in-out infinite alternate;
}

@keyframes essiPulse {
  0% { transform: scale(1) translate(0, 0); opacity: 0.8; }
  100% { transform: scale(1.1) translate(20px, -20px); opacity: 1; }
}

.essi-hero__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.essi-hero__content {
  position: relative;
  z-index: 2;
}

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

.essi-hero__breadcrumb a { color: var(--text-tertiary); transition: color var(--transition-fast); }
.essi-hero__breadcrumb a:hover { color: var(--essi-blue-light); }
.essi-hero__breadcrumb svg { width: 12px; height: 12px; color: var(--text-muted); }
.essi-hero__breadcrumb span { color: var(--essi-blue-light); }

.essi-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(71, 85, 105, 0.15);
  border: 1px solid rgba(71, 85, 105, 0.3);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.essi-hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--essi-amber);
  animation: essiDotPulse 2s ease-in-out infinite;
}

@keyframes essiDotPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 8px rgba(245,158,11,0.4); }
  50% { opacity: 0.4; box-shadow: none; }
}

.essi-hero__title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
}

.essi-hero__title em {
  font-style: normal;
  background: var(--gradient-heat);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.essi-hero__subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 620px;
}

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

/* ESS Container Hero Visual */
.essi-hero__visual {
  position: relative;
  z-index: 2;
}

.essi-container-diagram {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(10px);
  position: relative;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.essi-cd__roof {
  height: 12px;
  background: var(--essi-gradient);
  border-radius: 4px 4px 0 0;
  margin-bottom: 4px;
  border: 1px solid var(--border-subtle);
}

.essi-cd__body {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: rgba(30,41,59,0.5);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
}

.essi-cd__rack {
  flex: 1;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
}

.essi-cd__rack-label {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-align: center;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.essi-cd__module {
  height: 24px;
  background: rgba(71,85,105,0.2);
  border-radius: 2px;
  border: 1px solid rgba(71,85,105,0.4);
  position: relative;
  overflow: hidden;
}

.essi-cd__module--danger {
  background: rgba(234,88,12,0.15);
  border-color: rgba(234,88,12,0.4);
}

.essi-cd__module--danger::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(234,88,12,0.4) 0%, transparent 80%);
  animation: essiHeatRadiate 2s infinite alternate;
}

@keyframes essiHeatRadiate {
  0% { opacity: 0.5; transform: scale(0.9); }
  100% { opacity: 1; transform: scale(1.1); }
}

.essi-cd__rack-barrier {
  width: 6px;
  background: var(--essi-gradient-warm);
  border-radius: 3px;
  box-shadow: 0 0 10px rgba(245,158,11,0.2);
  position: relative;
}

.essi-cd__rack-barrier::after {
  content: 'THERMAL BARRIER';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-90deg);
  font-family: var(--font-mono);
  font-size: 0.4rem;
  color: var(--accent-heat-light);
  white-space: nowrap;
  letter-spacing: 0.1em;
  font-weight: bold;
}

.essi-cd__base {
  height: 8px;
  background: var(--essi-gradient);
  border-radius: 0 0 4px 4px;
  margin-top: 4px;
  border: 1px solid var(--border-subtle);
}

.essi-cd__thermal-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(90deg, rgba(234,88,12,0.1) 0%, transparent 40%, rgba(16,185,129,0.05) 100%);
  mix-blend-mode: color-dodge;
  border-radius: var(--radius-xl);
}

/* Micro-summary strip */
.essi-hero__strip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-top: 48px;
  padding: 20px 32px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.essi-hero__strip-item { text-align: center; }

.essi-hero__strip-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.essi-hero__strip-value span {
  font-size: 0.8rem;
  color: var(--essi-amber);
}

.essi-hero__strip-label {
  font-size: 0.625rem;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: 0.02em;
}

.essi-hero__strip-div {
  width: 1px;
  height: 36px;
  background: var(--border-subtle);
}

/* ============================================================
   2. STICKY NAV
   ============================================================ */
.essi-nav {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(10,12,16,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

.essi-nav__inner {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 16px;
}

.essi-nav__inner::-webkit-scrollbar { display: none; }

.essi-nav__link {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-tertiary);
  padding: 14px 12px;
  white-space: nowrap;
  transition: all var(--transition-fast);
  border-bottom: 2px solid transparent;
  letter-spacing: 0.01em;
}

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

.essi-nav__link.active {
  color: var(--essi-amber);
  border-bottom-color: var(--essi-amber);
}

.essi-nav__cta {
  margin-left: auto;
  padding: 8px 0;
  flex-shrink: 0;
}

/* ============================================================
   3. ESS CHALLENGES
   ============================================================ */
.essi-challenges__map {
  margin-bottom: 48px;
}

.essi-challenge-diagram {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 40px;
}

.essi-cd-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.essi-cd-box {
  background: var(--essi-bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  transition: all var(--transition-base);
}

.essi-cd-box:hover {
  border-color: rgba(245,158,11,0.2);
  transform: translateY(-4px);
}

.essi-cd-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--essi-amber);
}

.essi-cd-icon svg { width: 24px; height: 24px; }

.essi-cd-box h4 {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.essi-cd-box p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============================================================
   4. SAFETY & RELIABILITY
   ============================================================ */
.essi-safety__diagram {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.essi-scenario {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.essi-scenario--bad { border-color: rgba(220,38,38,0.2); }
.essi-scenario--good { border-color: rgba(16,185,129,0.2); }

.essi-scenario-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

.essi-scenario--bad .essi-scenario-header { color: var(--essi-red); }
.essi-scenario--good .essi-scenario-header { color: var(--essi-green); }

.essi-scenario-flow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.essi-flow-box {
  flex: 1;
  background: rgba(255,255,255,0.05);
  border-radius: 4px;
  padding: 16px 8px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.essi-flow-box--danger {
  background: rgba(220,38,38,0.1);
  color: var(--essi-red);
  border: 1px solid rgba(220,38,38,0.3);
}

.essi-flow-arrow {
  color: var(--border-medium);
}
.essi-flow-arrow--danger {
  color: var(--essi-red);
}

.essi-flow-barrier {
  width: 8px;
  height: 60px;
  background: var(--essi-gradient-warm);
  border-radius: 4px;
  box-shadow: 0 0 12px rgba(245,158,11,0.3);
}

.essi-scenario-outcome {
  margin-top: 24px;
  padding: 12px;
  border-radius: 4px;
  font-size: 0.8125rem;
  text-align: center;
  font-weight: 500;
}

.essi-scenario--bad .essi-scenario-outcome { background: rgba(220,38,38,0.05); color: var(--essi-red); }
.essi-scenario--good .essi-scenario-outcome { background: rgba(16,185,129,0.05); color: var(--essi-green); }

.essi-safety__pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.essi-pillar {
  background: var(--bg-tertiary);
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  display: flex;
  gap: 16px;
}

.essi-pillar-icon {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--essi-blue-light);
  flex-shrink: 0;
}

.essi-pillar-content h4 {
  font-size: 1rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

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

/* ============================================================
   5. WHY THIN MATTERS
   ============================================================ */
.essi-thin__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.essi-thin__points {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.essi-thin__point {
  display: flex;
  gap: 16px;
}

.essi-thin__point-icon {
  color: var(--essi-amber);
  margin-top: 4px;
}

.essi-thin__point h5 {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.essi-thin__point p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.essi-thin__visual {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 32px;
}

.essi-bar-group {
  margin-bottom: 16px;
}
.essi-bar-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.essi-bar {
  height: 24px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: white;
  font-weight: 600;
}
.essi-bar--thick { background: var(--essi-blue-gray); }
.essi-bar--thin { background: var(--essi-gradient-warm); }

/* ============================================================
   6. CONTAINMENT STRATEGY
   ============================================================ */
.essi-strategy__diagram {
  margin-bottom: 48px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.essi-layer {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 32px;
  transition: all var(--transition-base);
}

.essi-layer:hover {
  border-color: rgba(245,158,11,0.2);
  transform: translateX(8px);
}

.essi-layer-zone {
  width: 60px;
  height: 60px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--essi-amber);
  flex-shrink: 0;
}

.essi-layer-content {
  flex: 1;
}

.essi-layer-content h4 {
  font-size: 1.125rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.essi-layer-content p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   7. PRODUCT FIT
   ============================================================ */
.essi-products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.essi-product-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;
}

.essi-product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--essi-amber);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.essi-product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(245,158,11,0.3);
}

.essi-product-card:hover::before {
  transform: scaleX(1);
}

.essi-product-icon {
  color: var(--essi-amber);
  margin-bottom: 16px;
}

.essi-product-icon svg { width: 32px; height: 32px; }

.essi-product-card h4 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.essi-product-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.essi-product-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--essi-blue-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.essi-product-link:hover { color: var(--essi-amber); }

/* ============================================================
   8. PERFORMANCE HIGHLIGHTS
   ============================================================ */
.essi-perf__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.essi-perf-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.essi-perf-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.essi-perf-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--essi-amber);
  line-height: 1.1;
  margin-bottom: 4px;
}

.essi-perf-unit {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.essi-perf-desc {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* ============================================================
   9. COMPARISON
   ============================================================ */
.essi-comparison__table-wrap {
  overflow-x: auto;
  background: var(--bg-tertiary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-medium);
}

.essi-table {
  width: 100%;
  border-collapse: collapse;
}

.essi-table th,
.essi-table td {
  padding: 16px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.875rem;
}

.essi-table th {
  background: rgba(255,255,255,0.02);
  color: var(--text-primary);
  font-weight: 600;
  white-space: nowrap;
}

.essi-table td {
  color: var(--text-secondary);
}

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

.essi-table td:nth-child(2) {
  background: rgba(245,158,11,0.05);
  color: var(--text-primary);
  font-weight: 500;
}

/* ============================================================
   10. SCIENCE TO INFRASTRUCTURE
   ============================================================ */
.essi-flow-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: center;
}

.essi-flow-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.essi-flow-item {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  padding: 20px;
  border-radius: var(--radius-lg);
  text-align: center;
}

.essi-flow-item h5 {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.essi-flow-item p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.essi-flow-divider svg {
  width: 32px;
  height: 32px;
  color: var(--border-medium);
}

/* ============================================================
   11. COLLABORATION MODEL
   ============================================================ */
.essi-timeline {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin-top: 48px;
}

.essi-timeline::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--border-medium);
  z-index: 0;
}

.essi-step {
  position: relative;
  z-index: 1;
  width: 200px;
  text-align: center;
}

.essi-step-icon {
  width: 50px;
  height: 50px;
  background: var(--bg-body);
  border: 2px solid var(--border-medium);
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-weight: 700;
  transition: all var(--transition-base);
}

.essi-step:hover .essi-step-icon {
  border-color: var(--essi-amber);
  color: var(--essi-amber);
  background: rgba(245,158,11,0.1);
}

.essi-step h5 {
  font-size: 0.875rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.essi-step p {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ============================================================
   12. APPLICATION LANDSCAPE
   ============================================================ */
.essi-app-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.essi-app-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.essi-app-card h4 {
  font-size: 1.125rem;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.essi-app-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   13. WHY LEVRON AEROGEL
   ============================================================ */
/* Standard grid inherited from globals, local tweaks if needed */

/* ============================================================
   14. RESOURCE HUB
   ============================================================ */
.essi-resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.essi-resource {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition-base);
}

.essi-resource:hover {
  border-color: var(--essi-amber);
  transform: translateY(-2px);
}

.essi-resource h5 {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 8px;
}

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

.essi-resource-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--essi-amber);
  text-decoration: none;
}

/* ============================================================
   15. FINAL CTA
   ============================================================ */
.essi-cta {
  background: var(--essi-bg-card);
  border-top: 1px solid var(--border-medium);
  padding: 80px 0;
  text-align: center;
}

.essi-cta-paths {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 40px;
}

/* ============================================================
   RESPONSIVE DESIGN (Media Queries)
   ============================================================ */
@media (max-width: 1024px) {
  .essi-hero__layout,
  .essi-thin__layout,
  .essi-safety__diagram,
  .essi-flow-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .essi-products__grid,
  .essi-cd-grid {
    grid-template-columns: 1fr;
  }
  .essi-timeline {
    flex-direction: column;
    gap: 32px;
  }
  .essi-timeline::before {
    display: none;
  }
  .essi-step {
    width: 100%;
    display: flex;
    text-align: left;
    align-items: center;
    gap: 20px;
  }
  .essi-step-icon {
    margin: 0;
  }
  .essi-app-grid {
    grid-template-columns: 1fr;
  }
}