:root {
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-subtle: #f1f5f9;
  --bg-soft: #eff6ff;
  --text: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  --navy: #0b1f3a;
  --navy-mid: #132f54;
  --accent: #0284c7;
  --accent-hover: #0369a1;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --success: #047857;
  --success-bg: #ecfdf5;
  --warning: #b45309;
  --warning-bg: #fffbeb;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 12px 32px -8px rgba(11, 31, 58, 0.1), 0 2px 6px rgba(11, 31, 58, 0.04);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  font-variant-numeric: tabular-nums;
}

h1, h2, h3, h4 {
  font-family: "Plus Jakarta Sans", "Inter", sans-serif;
  margin: 0 0 0.65rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--navy);
}

p {
  margin: 0 0 1rem;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.hidden {
  display: none !important;
}

/* Barra superior institucional */
.top-bar {
  background: var(--navy);
  color: #cbd5e1;
  font-size: 0.8rem;
  padding: 9px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.top-bar-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.dot-live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.22);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
  gap: 16px;
}

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

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: linear-gradient(145deg, #ffffff 0%, #eff6ff 100%);
  border: 1px solid #cbd5e1;
  box-shadow: var(--shadow-sm);
  display: grid;
  place-items: center;
  color: var(--navy);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-text strong {
  font-family: "Plus Jakarta Sans", sans-serif;
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.logo-text small {
  font-size: 0.72rem;
  color: var(--text-light);
  font-weight: 500;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
}

.main-nav a {
  position: relative;
  padding: 4px 0;
  transition: color 0.15s ease;
}

.main-nav a:hover {
  color: var(--navy);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text);
  display: block;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
  font-family: inherit;
  text-align: center;
}

.btn-sm {
  padding: 9px 15px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 13px 24px;
  font-size: 0.96rem;
}

.btn-full {
  width: 100%;
  padding: 12px 18px;
}

.btn-primary {
  background: var(--navy);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(11, 31, 58, 0.16);
}

.btn-primary:hover {
  background: var(--navy-mid);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(11, 31, 58, 0.2);
}

.btn-secondary {
  background: var(--accent);
  color: #ffffff;
}

.btn-secondary:hover {
  background: var(--accent-hover);
}

.btn-outline {
  background: #ffffff;
  color: var(--navy);
  border-color: var(--border-strong);
}

.btn-outline:hover {
  border-color: var(--navy);
  background: var(--bg-alt);
}

/* Hero con retícula técnica sutil */
.hero {
  padding: 64px 0 76px;
  background-color: #fbfcfe;
  background-image:
    radial-gradient(circle at 85% 12%, rgba(2, 132, 199, 0.08), transparent 44%),
    linear-gradient(to right, rgba(148, 163, 184, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
  background-size: auto, 34px 34px, 34px 34px;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.24fr 0.92fr;
  gap: 44px;
  align-items: center;
}

.eyebrow-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #ffffff;
  color: var(--navy);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  margin-bottom: 18px;
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.hero h1 {
  font-size: clamp(2.05rem, 3.5vw, 2.95rem);
  font-weight: 800;
  margin-bottom: 18px;
  color: var(--navy);
}

.text-accent {
  color: var(--accent);
}

.hero-lead {
  font-size: 1.07rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  max-width: 60ch;
}

.hero-highlights {
  display: grid;
  gap: 12px;
  margin-bottom: 30px;
}

.hero-highlights li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text);
}

.check-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  background: var(--bg-soft);
  border: 1px solid #bfdbfe;
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-top: 1px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-trust-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.trust-cell strong {
  display: block;
  font-size: 0.88rem;
  color: var(--navy);
}

.trust-cell span {
  font-size: 0.8rem;
  color: var(--text-light);
}

/* Ficha técnica lateral Hero */
.hero-panel {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.panel-header {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  color: #ffffff;
  padding: 24px 26px;
}

.panel-top-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.panel-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  background: rgba(255, 255, 255, 0.14);
  padding: 4px 10px;
  border-radius: 999px;
}

.panel-status {
  font-size: 0.72rem;
  font-weight: 600;
  color: #7dd3fc;
}

.panel-header h2 {
  color: #ffffff;
  font-size: 1.25rem;
  margin-bottom: 4px;
}

.panel-header p {
  margin: 0;
  font-size: 0.84rem;
  color: #cbd5e1;
}

.panel-specs {
  padding: 20px 26px;
  display: grid;
  gap: 12px;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--border);
  font-size: 0.87rem;
}

.spec-row span {
  color: var(--text-muted);
}

.spec-row strong {
  text-align: right;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  color: var(--navy);
}

.highlight-row strong {
  color: var(--accent);
}

.panel-footer {
  padding: 0 26px 26px;
}

.panel-note {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 0.83rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

/* Pilares */
.pillars-section {
  padding: 54px 0;
  background: #ffffff;
}

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

.pillar-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.pillar-card:hover {
  border-color: #cbd5e1;
  box-shadow: var(--shadow-md);
}

.pillar-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--bg-soft);
  border: 1px solid #bfdbfe;
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 14px;
}

.pillar-card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.pillar-card p {
  margin: 0;
  font-size: 0.89rem;
  color: var(--text-muted);
}

/* Encabezados de sección */
.section-kicker {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.section-header h2 {
  font-size: clamp(1.65rem, 2.6vw, 2.15rem);
  font-weight: 800;
}

.section-header p {
  max-width: 680px;
  color: var(--text-muted);
  margin: 0;
}

.section-header.centered {
  flex-direction: column;
  align-items: center;
  text-align: center;
}

/* Catálogo */
.catalog-section {
  padding: 72px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.catalog-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 15px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: #ffffff;
  color: var(--text-muted);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.16s ease;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--navy);
  color: #ffffff;
  border-color: var(--navy);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.product-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.product-card.featured-reactor {
  border-top: 3px solid var(--accent);
}

.card-model-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.model-sku {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-subtle);
  padding: 3px 8px;
  border-radius: 5px;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 14px;
}

.power-badge {
  font-family: "Plus Jakarta Sans", sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.02em;
}

.power-badge small {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 500;
}

.stock-pill {
  font-size: 0.73rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
}

.stock-ok {
  background: var(--success-bg);
  color: var(--success);
}

.stock-last {
  background: var(--warning-bg);
  color: var(--warning);
}

.stock-out {
  background: var(--danger-bg);
  color: var(--danger);
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tech-pill {
  font-size: 0.73rem;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: 6px;
  background: var(--bg-alt);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.tech-pill.reactor-pill {
  background: var(--bg-soft);
  color: var(--navy);
  border-color: #93c5fd;
}

.tech-pill.shipping-pill {
  background: var(--success-bg);
  color: var(--success);
  border-color: #a7f3d0;
}

.card-specs {
  display: grid;
  gap: 8px;
  padding: 14px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 14px;
  font-size: 0.85rem;
}

.card-specs div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.card-specs span {
  color: var(--text-light);
}

.card-specs strong {
  text-align: right;
  color: var(--text);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.card-price-block {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.price-value {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.42rem;
  font-weight: 700;
  color: var(--navy);
}

.price-consult {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--navy);
}

.price-caption {
  font-size: 0.75rem;
  color: var(--text-light);
  text-align: right;
}

.card-actions {
  display: grid;
  gap: 8px;
}

.catalog-banners-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.custom-power-banner {
  background: #ffffff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--navy);
  border-radius: var(--radius);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.custom-power-banner.allies-banner {
  border-left-color: var(--accent);
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
}

.custom-power-banner strong {
  display: block;
  font-size: 0.98rem;
  color: var(--navy);
  margin-bottom: 3px;
}

.custom-power-banner p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Reactor AC */
.reactor-section {
  padding: 76px 0;
  background: #ffffff;
}

.reactor-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 40px;
  align-items: center;
}

.reactor-info h2 {
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  font-weight: 800;
}

.reactor-info > p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.reactor-benefits {
  display: grid;
  gap: 16px;
}

.benefit-item {
  border-left: 3px solid var(--accent);
  padding-left: 16px;
}

.benefit-item strong {
  display: block;
  margin-bottom: 2px;
  font-size: 0.96rem;
  color: var(--navy);
}

.benefit-item p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.reactor-diagram-card {
  background: var(--navy);
  border: 1px solid var(--navy-mid);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.diagram-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.diagram-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: #f8fafc;
}

.diagram-code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  padding: 3px 8px;
  border-radius: 5px;
}

.architecture-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Selector */
.selector-section {
  padding: 76px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.selector-layout {
  display: grid;
  grid-template-columns: 1.32fr 0.88fr;
  gap: 28px;
  align-items: start;
}

.selector-form,
.selector-summary {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.selector-summary {
  position: sticky;
  top: 94px;
  box-shadow: var(--shadow-md);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

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

.form-group label {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--navy);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.91rem;
  color: var(--text);
  background: #ffffff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.14);
}

.tech-alert {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 500;
}

.tech-alert.warning {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #fecaca;
}

.tech-alert.info {
  background: var(--bg-soft);
  color: var(--navy);
  border: 1px solid #bfdbfe;
}

.summary-badge {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--success-bg);
  color: var(--success);
  margin-bottom: 12px;
}

.summary-badge.incompatible {
  background: var(--danger-bg);
  color: var(--danger);
}

.selector-summary h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.sum-price {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
}

.summary-list {
  display: grid;
  gap: 9px;
  padding: 14px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 18px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.summary-note {
  margin: 12px 0 0;
  font-size: 0.78rem;
  color: var(--text-light);
  text-align: center;
}

/* Cuestionario de Parametrización */
.param-section {
  padding: 76px 0;
  background: #ffffff;
}

.param-quick-photo-box {
  background: linear-gradient(135deg, #f0f9ff 0%, #ffffff 100%);
  border: 1px solid #bae6fd;
  border-radius: var(--radius);
  padding: 26px 30px;
  margin-bottom: 24px;
  display: grid;
  grid-template-columns: 1.45fr 0.85fr;
  gap: 28px;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.param-quick-badge {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  background: #e0f2fe;
  color: var(--accent-hover);
  margin-bottom: 8px;
}

.param-quick-info h3 {
  font-size: 1.18rem;
  margin-bottom: 6px;
}

.param-quick-info p {
  font-size: 0.91rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.param-quick-steps {
  display: grid;
  gap: 6px;
  font-size: 0.87rem;
  color: var(--navy-mid);
  margin: 0;
}

.param-quick-cta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
}

.param-quick-cta small {
  font-size: 0.79rem;
  color: var(--text-light);
  line-height: 1.4;
}

.param-collapse {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-alt);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.param-collapse-summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  background: #ffffff;
  transition: background 0.15s ease;
}

.param-collapse-summary::-webkit-details-marker {
  display: none;
}

.param-collapse-summary:hover {
  background: #f8fafc;
}

.param-collapse-title {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.param-collapse-title strong {
  font-family: "Plus Jakarta Sans", sans-serif;
  font-size: 1.05rem;
  color: var(--navy);
}

.param-collapse-title span:last-child {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.param-collapse-action {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-hover);
  background: var(--bg-soft);
  border: 1px solid #bae6fd;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.param-collapse[open] .param-collapse-summary {
  border-bottom: 1px solid var(--border);
}

.param-collapse[open] .param-collapse-action {
  background: #e2e8f0;
  border-color: #cbd5e1;
  color: var(--navy);
}

.param-card {
  background: var(--bg-alt);
  padding: 28px;
}

.param-form-badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 999px;
  background: #e2e8f0;
  color: var(--navy);
  margin-bottom: 4px;
}

.param-id-row {
  display: grid;
  grid-template-columns: 1.2fr 1.1fr 0.9fr;
  gap: 16px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  margin-bottom: 20px;
}

.param-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.param-block {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin: 0;
  display: grid;
  gap: 14px;
}

.param-block legend {
  font-family: "Plus Jakarta Sans", sans-serif;
  font-weight: 700;
  font-size: 0.94rem;
  color: var(--navy);
  padding: 0 8px;
}

.param-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.param-disclaimer {
  flex: 1;
  min-width: 260px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.param-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.form-status-banner {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
}

.form-status-banner.success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid #a7f3d0;
}

.form-status-banner.error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #fecaca;
}

/* Proceso y Garantía */
.process-section {
  padding: 76px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 30px;
}

.step-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.step-num {
  font-family: "JetBrains Mono", monospace;
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  background: var(--bg-soft);
  border: 1px solid #bfdbfe;
  color: var(--navy);
  font-weight: 700;
  font-size: 0.82rem;
  margin-bottom: 14px;
}

.step-card h3 {
  font-size: 1rem;
}

.step-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.payments-warranty-box {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 32px;
  box-shadow: var(--shadow-sm);
}

.pw-col h3 {
  font-size: 1.06rem;
  margin-bottom: 14px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.tag-list li {
  background: var(--bg-soft);
  color: var(--navy);
  border: 1px solid #bfdbfe;
  padding: 6px 13px;
  border-radius: 999px;
  font-size: 0.83rem;
  font-weight: 600;
}

.small-muted {
  font-size: 0.84rem;
  color: var(--text-light);
  margin: 0;
}

.clean-list {
  display: grid;
  gap: 9px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.clean-list li::before {
  content: "▪ ";
  color: var(--accent);
  font-weight: 700;
}

/* FAQ */
.faq-section {
  padding: 72px 0;
  background: #ffffff;
}

.faq-container {
  max-width: 860px;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  background: var(--bg-alt);
  transition: border-color 0.15s ease;
}

.faq-item[open] {
  background: #ffffff;
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--navy);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--accent);
  font-weight: 600;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item p {
  margin: 12px 0 0;
  font-size: 0.91rem;
  color: var(--text-muted);
}

/* Footer */
.site-footer {
  background: var(--navy);
  color: #cbd5e1;
  padding: 52px 0 26px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 1fr;
  gap: 32px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand {
  display: block;
  font-family: "Plus Jakarta Sans", sans-serif;
  color: #ffffff;
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.footer-role {
  color: #7dd3fc;
  font-weight: 500;
}

.site-footer h4 {
  color: #ffffff;
  font-size: 0.96rem;
  margin-bottom: 12px;
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 20px;
  font-size: 0.82rem;
  color: #94a3b8;
  text-align: center;
}

/* Botón flotante WhatsApp */
.floating-wa {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 50;
  background: #15803d;
  color: #ffffff;
  padding: 12px 18px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.24);
  transition: transform 0.16s ease, background 0.16s ease;
}

.floating-wa:hover {
  transform: translateY(-2px);
  background: #166534;
}

/* Responsive */
@media (max-width: 980px) {
  .hero-grid,
  .reactor-grid,
  .selector-layout,
  .payments-warranty-box,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .selector-summary {
    position: static;
  }

  .pillars-grid,
  .process-steps,
  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .catalog-banners-grid,
  .param-quick-photo-box,
  .param-grid,
  .param-id-row {
    grid-template-columns: 1fr;
  }

  .param-collapse-summary {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 720px) {
  .top-bar-right,
  .hide-mobile {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    padding: 18px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    box-shadow: var(--shadow-md);
  }

  .main-nav.open {
    display: flex;
  }

  .pillars-grid,
  .catalog-grid,
  .process-steps,
  .form-grid,
  .hero-trust-strip {
    grid-template-columns: 1fr;
  }

  .floating-wa span {
    display: none;
  }

  .floating-wa {
    padding: 14px;
  }
}