/* ============================================================
   page-food-barrier-film.css
   LayerQuestar — Food Barrier Film Production Line Solution Page
   Prefix: fbf-
   Version: 1.0
   Rules:
     - No :root{} — all tokens from Global.css
     - No hardcoded colors or spacing — var() only
     - No !important
     - Light-surface components (.cred-item etc.) forbidden in .section-dark
   ============================================================ */

/* ============================================================
   S1 — HERO
   ============================================================ */
.fbf-hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

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

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

.fbf-hero__overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 15%, rgba(215, 25, 32, .22), transparent 32%),
    radial-gradient(circle at 85% 25%, rgba(255, 255, 255, .05), transparent 34%),
    linear-gradient(135deg, rgba(11, 13, 16, .96) 0%, rgba(23, 26, 31, .88) 55%, rgba(36, 39, 46, .82) 100%);
}

.fbf-hero__inner {
  position: relative;
  z-index: 1;
  padding: var(--sp-8) var(--sp-5);
  width: 100%;
}

.fbf-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  background: rgba(215, 25, 32, .15);
  border: 1px solid rgba(215, 25, 32, .35);
  border-radius: 100px;
  padding: 6px var(--sp-2);
  margin-bottom: var(--sp-3);
}

.fbf-hero__eyebrow-label {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--brand-mid);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.fbf-hero__title {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: #fff;
  line-height: 1.12;
  max-width: 760px;
  margin: 0 0 var(--sp-3);
}

.fbf-hero__title em {
  font-style: normal;
  color: var(--brand-mid);
}

.fbf-hero__subtitle {
  font-size: var(--text-md);
  color: rgba(255, 255, 255, .70);
  max-width: 600px;
  line-height: 1.65;
  margin: 0 0 var(--sp-5);
}

/* Trust Bar */
.fbf-hero__trust {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
  padding: var(--sp-3) var(--sp-4);
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .10);
  border-radius: var(--r-lg);
  max-width: 780px;
}

.fbf-hero__trust-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 120px;
}

.fbf-hero__trust-val {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-lg);
  font-weight: 500;
  color: #fff;
  line-height: 1.2;
}

.fbf-hero__trust-val span {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, .55);
  font-weight: 400;
}

.fbf-hero__trust-label {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, .50);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.fbf-hero__divider {
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, .12);
  flex-shrink: 0;
}

/* CTA Group */
.fbf-hero__cta-group {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

/* ============================================================
   S2 — FOOD CATEGORY SELECTOR
   ============================================================ */
.fbf-selector {
  padding: var(--sp-7) var(--sp-5);
}

.fbf-selector__tabs {
  display: flex;
  gap: var(--sp-2);
  justify-content: center;
  margin-bottom: var(--sp-5);
  flex-wrap: wrap;
}

.fbf-selector__tab {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-3);
  border: 1.5px solid var(--gray-100);
  border-radius: var(--r-lg);
  background: #fff;
  cursor: pointer;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-600);
  transition: all .22s ease;
  font-family: 'DM Sans', system-ui, sans-serif;
}

.fbf-selector__tab:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: var(--brand-subtle);
}

.fbf-selector__tab.is-active {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
}

.fbf-selector__tab-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Panel */
.fbf-selector__panel {
  display: none;
}

.fbf-selector__panel.is-active {
  display: block;
}

.fbf-selector__panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  align-items: start;
}

.fbf-selector__panel-img {
  border-radius: var(--r-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.fbf-selector__panel-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.fbf-selector__panel-body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.fbf-selector__panel-tag {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--brand);
  background: var(--brand-tint);
  border-radius: 100px;
  padding: 4px var(--sp-2);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.fbf-selector__panel-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--gray-800);
  line-height: 1.2;
  margin: 0;
}

.fbf-selector__panel-desc {
  font-size: var(--text-base);
  color: var(--gray-600);
  line-height: 1.65;
  margin: 0;
}

/* Spec pills row */
.fbf-selector__specs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
}

.fbf-selector__spec-pill {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--gray-800);
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 100px;
  padding: 4px 12px;
}

/* Shelf life bar */
.fbf-selector__shelf {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--r-md);
  padding: var(--sp-3);
}

.fbf-selector__shelf-label {
  font-size: var(--text-sm);
  color: var(--gray-400);
  margin-bottom: var(--sp-1);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.fbf-selector__shelf-row {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: 6px;
}

.fbf-selector__shelf-row:last-child {
  margin-bottom: 0;
}

.fbf-selector__shelf-name {
  font-size: var(--text-sm);
  color: var(--gray-600);
  width: 120px;
  flex-shrink: 0;
}

.fbf-selector__shelf-track {
  flex: 1;
  height: 8px;
  background: var(--gray-100);
  border-radius: 100px;
  overflow: hidden;
}

.fbf-selector__shelf-fill {
  height: 100%;
  border-radius: 100px;
  background: var(--brand);
}

.fbf-selector__shelf-fill--before {
  background: var(--gray-200);
}

.fbf-selector__shelf-days {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-800);
  width: 60px;
  text-align: right;
  flex-shrink: 0;
}

.fbf-selector__panel-cta {
  margin-top: var(--sp-1);
}

/* ============================================================
   S3 — THE COMPLETE LINE (SVG Panels)
   ============================================================ */
.fbf-line {
  padding: var(--sp-7) var(--sp-5);
}

.fbf-line__panels {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
  margin-top: var(--sp-5);
}

.fbf-line__panel {
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .10);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.fbf-line__panel-header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  background: rgba(255, 255, 255, .03);
}

.fbf-line__panel-badge {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--brand-mid);
  background: rgba(215, 25, 32, .15);
  border: 1px solid rgba(215, 25, 32, .30);
  border-radius: 100px;
  padding: 3px 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.fbf-line__panel-title {
  font-size: var(--text-md);
  font-weight: 700;
  color: #fff;
  margin: 0;
}

.fbf-line__panel-sub {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, .45);
  margin-left: auto;
  white-space: nowrap;
}

.fbf-line__svg-wrap {
  padding: var(--sp-4);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.fbf-line__svg-wrap svg {
  display: block;
  min-width: 900px;
}

/* ============================================================
   S4 — BARRIER STRUCTURE GUIDE
   ============================================================ */
.fbf-guide {
  padding: var(--sp-7) var(--sp-5);
}

/* OTR Reference Table */
.fbf-guide__otr-table-wrap {
  overflow-x: auto;
  margin-bottom: var(--sp-5);
  border-radius: var(--r-lg);
  border: 1px solid var(--gray-100);
}

.fbf-guide__otr-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  min-width: 700px;
}

.fbf-guide__otr-table thead tr {
  background: var(--charcoal);
}

.fbf-guide__otr-table thead th {
  padding: var(--sp-2) var(--sp-3);
  text-align: left;
  font-size: var(--text-xs);
  font-weight: 700;
  color: rgba(255, 255, 255, .70);
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.fbf-guide__otr-table tbody tr {
  border-bottom: 1px solid var(--gray-100);
  transition: background .18s ease;
}

.fbf-guide__otr-table tbody tr:last-child {
  border-bottom: none;
}

.fbf-guide__otr-table tbody tr:hover {
  background: var(--brand-subtle);
}

.fbf-guide__otr-table tbody td {
  padding: var(--sp-2) var(--sp-3);
  color: var(--gray-800);
  vertical-align: middle;
}

.fbf-guide__otr-table tbody td:first-child {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--gray-800);
}

.fbf-guide__otr-badge {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 100px;
}

.fbf-guide__otr-badge--high {
  background: var(--green-bg);
  color: var(--green-fg);
}

.fbf-guide__otr-badge--med {
  background: var(--amber-bg);
  color: var(--amber-fg);
}

/* Layer Function Cards */
.fbf-guide__layers-title {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--gray-800);
  margin: 0 0 var(--sp-3);
}

.fbf-guide__layer-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
}

.fbf-guide__layer-card {
  border-radius: var(--r-lg);
  border: 1px solid var(--gray-100);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-card);
  transition: transform .22s ease, box-shadow .22s ease;
}

.fbf-guide__layer-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.fbf-guide__layer-card-top {
  padding: var(--sp-2) var(--sp-2) var(--sp-1);
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.fbf-guide__layer-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.fbf-guide__layer-dot--pe    { background: #607d8b; }
.fbf-guide__layer-dot--tie   { background: var(--brand); }
.fbf-guide__layer-dot--pa    { background: #3b82f6; }
.fbf-guide__layer-dot--evoh  { background: #166534; }

.fbf-guide__layer-code {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--gray-800);
}

.fbf-guide__layer-card-body {
  padding: 0 var(--sp-2) var(--sp-2);
}

.fbf-guide__layer-name {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--gray-800);
  margin: 0 0 4px;
}

.fbf-guide__layer-desc {
  font-size: var(--text-xs);
  color: var(--gray-600);
  line-height: 1.55;
  margin: 0;
}

/* EVOH Humidity Warning Box */
.fbf-guide__evoh-note {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
  background: var(--amber-bg);
  border: 1px solid rgba(146, 64, 14, .20);
  border-radius: var(--r-lg);
  padding: var(--sp-3) var(--sp-4);
  margin-bottom: var(--sp-5);
}

.fbf-guide__evoh-note-icon {
  flex-shrink: 0;
  color: var(--amber-fg);
  margin-top: 2px;
}

.fbf-guide__evoh-note-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--amber-fg);
  margin: 0 0 4px;
}

.fbf-guide__evoh-note-text {
  font-size: var(--text-sm);
  color: var(--amber-fg);
  line-height: 1.6;
  margin: 0;
}

/* Shelf Life Mapping Table */
.fbf-guide__shelf-table-wrap {
  overflow-x: auto;
  border-radius: var(--r-lg);
  border: 1px solid var(--gray-100);
}

.fbf-guide__shelf-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  min-width: 680px;
}

.fbf-guide__shelf-table thead tr {
  background: var(--charcoal);
}

.fbf-guide__shelf-table thead th {
  padding: var(--sp-2) var(--sp-3);
  text-align: left;
  font-size: var(--text-xs);
  font-weight: 700;
  color: rgba(255, 255, 255, .70);
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.fbf-guide__shelf-table tbody tr {
  border-bottom: 1px solid var(--gray-100);
}

.fbf-guide__shelf-table tbody tr:last-child {
  border-bottom: none;
}

.fbf-guide__shelf-table tbody tr:hover {
  background: var(--gray-50);
}

.fbf-guide__shelf-table tbody td {
  padding: var(--sp-2) var(--sp-3);
  color: var(--gray-800);
  vertical-align: middle;
}

/* ============================================================
   S5 — CONFIGURATION COMPARISON
   ============================================================ */
.fbf-configs {
  padding: var(--sp-7) var(--sp-5);
}

.fbf-configs__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

.fbf-configs__card {
  border-radius: var(--r-lg);
  border: 1.5px solid var(--gray-100);
  background: #fff;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.fbf-configs__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
  border-color: var(--brand);
}

.fbf-configs__card--featured {
  border-color: var(--brand);
  position: relative;
}

.fbf-configs__card-header {
  padding: var(--sp-3) var(--sp-4);
  background: var(--graphite);
}

.fbf-configs__card-badge {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--brand-mid);
  letter-spacing: .06em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}

.fbf-configs__card-title {
  font-size: var(--text-lg);
  font-weight: 800;
  color: #fff;
  margin: 0;
  line-height: 1.25;
}

.fbf-configs__card-body {
  padding: var(--sp-3) var(--sp-4);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.fbf-configs__spec-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: var(--sp-1);
  border-bottom: 1px solid var(--gray-100);
  gap: var(--sp-2);
}

.fbf-configs__spec-row:last-of-type {
  border-bottom: none;
}

.fbf-configs__spec-key {
  font-size: var(--text-sm);
  color: var(--gray-400);
  flex-shrink: 0;
}

.fbf-configs__spec-val {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-800);
  text-align: right;
}

.fbf-configs__card-footer {
  padding: var(--sp-2) var(--sp-4) var(--sp-3);
  border-top: 1px solid var(--gray-100);
}

/* ============================================================
   S6 — DOWNSTREAM LINE
   ============================================================ */
.fbf-downstream {
  padding: var(--sp-7) var(--sp-5);
}

.fbf-downstream__svg-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: var(--sp-5) 0;
  padding: var(--sp-4);
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .10);
  border-radius: var(--r-lg);
}

.fbf-downstream__svg-wrap svg {
  display: block;
  min-width: 860px;
}

.fbf-downstream__legend {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
  margin-bottom: var(--sp-5);
  padding: var(--sp-3) var(--sp-4);
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--r-md);
}

.fbf-downstream__legend-item {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  white-space: nowrap;
}

.fbf-downstream__legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

.fbf-downstream__legend-dot--lq {
  background: var(--brand);
}

.fbf-downstream__legend-dot--3p {
  background: rgba(255, 255, 255, .25);
  border: 1px dashed rgba(255, 255, 255, .50);
}

.fbf-downstream__legend-text {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, .65);
}

.fbf-downstream__cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

/* Dark-surface supply card (NOT .cred-item — forbidden in section-dark) */
.fbf-downstream__supply-card {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--r-lg);
  padding: var(--sp-4);
}

.fbf-downstream__supply-card-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: #fff;
  margin: 0 0 var(--sp-2);
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.fbf-downstream__supply-card-title-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-mid);
  flex-shrink: 0;
}

.fbf-downstream__supply-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.fbf-downstream__supply-list li {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, .65);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-1);
  line-height: 1.55;
}

.fbf-downstream__supply-list li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .35);
  flex-shrink: 0;
  margin-top: 7px;
}

/* ============================================================
   S7 — WHY LAYERQUESTAR FOR BARRIER FILM
   ============================================================ */
.fbf-why {
  padding: var(--sp-7) var(--sp-5);
}

.fbf-why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

.fbf-why__card {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--r-lg);
  padding: var(--sp-4);
  box-shadow: var(--shadow-card);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.fbf-why__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
  border-color: var(--brand);
}

.fbf-why__card-icon {
  width: 40px;
  height: 40px;
  background: var(--brand-tint);
  border-radius: var(--r-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand);
  margin-bottom: var(--sp-2);
}

.fbf-why__card-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-800);
  margin: 0 0 var(--sp-1);
}

.fbf-why__card-desc {
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: 1.6;
  margin: 0;
}

.fbf-why__card-spec {
  display: inline-block;
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--brand);
  background: var(--brand-tint);
  border-radius: 100px;
  padding: 3px 10px;
  margin-top: var(--sp-1);
}

/* Compliance Note */
.fbf-why__compliance {
  margin-top: var(--sp-5);
  padding: var(--sp-4);
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--r-lg);
}

.fbf-why__compliance-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-800);
  margin: 0 0 var(--sp-2);
}

.fbf-why__compliance-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-2);
}

.fbf-why__compliance-item {
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--r-md);
  padding: var(--sp-2);
  text-align: center;
}

.fbf-why__compliance-reg {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-800);
  display: block;
  margin-bottom: 4px;
}

.fbf-why__compliance-region {
  font-size: var(--text-xs);
  color: var(--gray-400);
}

/* ============================================================
   S8 — FAQ
   ============================================================ */
.fbf-faq {
  padding: var(--sp-7) var(--sp-5);
}

.fbf-faq__list {
  max-width: 820px;
  margin: var(--sp-5) auto 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.fbf-faq__item {
  border: 1px solid var(--gray-100);
  border-radius: var(--r-lg);
  background: #fff;
  overflow: hidden;
  transition: border-color .2s ease;
}

.fbf-faq__item:hover {
  border-color: var(--gray-200);
}

.fbf-faq__item[open] {
  border-color: var(--brand);
}

.fbf-faq__q {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  cursor: pointer;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-800);
  transition: color .2s ease;
  user-select: none;
}

.fbf-faq__q::-webkit-details-marker { display: none; }
summary.fbf-faq__q { list-style: none; }

.fbf-faq__item[open] .fbf-faq__q {
  color: var(--brand);
}

.fbf-faq__chevron {
  flex-shrink: 0;
  color: var(--gray-400);
  transition: transform .25s ease;
}

.fbf-faq__item[open] .fbf-faq__chevron {
  transform: rotate(180deg);
  color: var(--brand);
}

.fbf-faq__a {
  padding: 0 var(--sp-4) var(--sp-3);
  border-top: 1px solid var(--gray-100);
}

.fbf-faq__a p {
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: 1.7;
  margin: var(--sp-2) 0 0;
}

.fbf-faq__a p:first-child {
  margin-top: var(--sp-2);
}

summary:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ============================================================
   S9 — FINAL CTA
   ============================================================ */
.fbf-cta {
  padding: var(--sp-8) var(--sp-5);
  text-align: center;
}

.fbf-cta__inner {
  max-width: 640px;
  margin: 0 auto;
}

.fbf-cta__eyebrow {
  font-family: 'DM Mono', monospace;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--brand-mid);
  letter-spacing: .10em;
  text-transform: uppercase;
  display: block;
  margin-bottom: var(--sp-2);
}

.fbf-cta__title {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: #fff;
  line-height: 1.15;
  margin: 0 0 var(--sp-3);
}

.fbf-cta__sub {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, .65);
  line-height: 1.65;
  margin: 0 0 var(--sp-5);
}

.fbf-cta__btn-group {
  display: flex;
  justify-content: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
  margin-bottom: var(--sp-4);
}

.fbf-cta__trust-row {
  display: flex;
  justify-content: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.fbf-cta__trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, .55);
}

.fbf-cta__trust-item svg {
  color: var(--brand-mid);
  flex-shrink: 0;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 960px) {
  .fbf-hero__title { font-size: var(--text-3xl); }
  .fbf-hero__trust { max-width: 100%; }
  .fbf-hero__divider { display: none; }
  .fbf-hero__trust-item { min-width: 80px; }

  .fbf-selector__panel-grid { grid-template-columns: 1fr; }
  .fbf-selector__panel-img { aspect-ratio: 16/9; }

  .fbf-guide__layer-grid { grid-template-columns: repeat(3, 1fr); }
  .fbf-configs__grid { grid-template-columns: 1fr; }
  .fbf-why__grid { grid-template-columns: 1fr 1fr; }
  .fbf-why__compliance-grid { grid-template-columns: repeat(2, 1fr); }
  .fbf-downstream__cols { grid-template-columns: 1fr; }

  .fbf-cta__title { font-size: var(--text-2xl); }
}

@media (max-width: 600px) {
  .fbf-hero__title { font-size: var(--text-2xl); }
  .fbf-hero__cta-group { flex-direction: column; align-items: stretch; }
  .fbf-selector__tabs { flex-direction: column; }
  .fbf-guide__layer-grid { grid-template-columns: 1fr 1fr; }
  .fbf-why__grid { grid-template-columns: 1fr; }
  .fbf-why__compliance-grid { grid-template-columns: 1fr 1fr; }
  .fbf-cta__btn-group { flex-direction: column; align-items: center; }
}

@media (prefers-reduced-motion: reduce) {
  .fbf-configs__card,
  .fbf-why__card,
  .fbf-guide__layer-card,
  .fbf-faq__chevron,
  .fbf-faq__item,
  .fbf-selector__tab { transition: none; }
}