/* ============================================================================
   Leopack FIBC — Clean Architectural Light Mode & Large High-Contrast Typography
   ========================================================================== */

:root {
  /* --- Light Mode Engineering Palette --- */
  --sc-canvas:         #F8FAFC; /* Clean industrial off-white ground */
  --sc-surface:        #FFFFFF; /* Pure white crisp card surface */
  --sc-surface-elev:   #F1F5F9; /* Elevated surface / hover tone */
  --sc-surface-subtle: #F8FAFC;
  --sc-ink:            #0F172A; /* Deep slate / high-contrast graphite ink */
  --sc-ink-soft:       #334155; /* Crisp, highly readable charcoal body text */
  --sc-ink-muted:      #64748B; /* Monospace labels & metadata */
  
  --sc-accent:         #2563EB; /* Precision Engineering Blue (AAA accessible on light) */
  --sc-accent-hover:   #1D4ED8;
  --sc-accent-ink:     #FFFFFF; /* Pure white text on blue buttons */
  --sc-accent-soft:    rgba(37, 99, 235, 0.08);
  --sc-accent-border:  rgba(37, 99, 235, 0.25);

  --sc-line:           #E2E8F0; /* Clean light gray borders */
  --sc-line-strong:    #CBD5E1;
  --sc-grid-guide:     rgba(15, 23, 42, 0.04); /* Subtle engineering grid */

  /* --- Typography Families --- */
  --sc-font-display:   "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --sc-font-text:      "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --sc-font-mono:      "Geist Mono", SFMono-Regular, Consolas, monospace;

  /* Custom Elevation & Radii */
  --sc-r-sm:           6px;
  --sc-r-md:           12px;
  --sc-r-lg:           18px;
  --sc-panel-shadow:   0 12px 36px -10px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
  --sc-hover-shadow:   0 20px 40px -12px rgba(15, 23, 42, 0.12);

  /* Fluid Spacing & Constraints */
  --sc-section-pad:    clamp(4rem, 6vw, 7rem);
  --sc-maxw:           88rem;
  --sc-gutter:         clamp(1.5rem, 5vw, 4.5rem);
}

/* Base Resets */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-size: 16px; }

body {
  background-color: var(--sc-canvas);
  color: var(--sc-ink);
  font-family: var(--sc-font-text);
  font-size: 1.08rem;
  line-height: 1.65;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* Background Technical Blueprint Grid */
.tech-grid-bg {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, var(--sc-grid-guide) 1px, transparent 1px),
    linear-gradient(to bottom, var(--sc-grid-guide) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

/* --- Persistent Top Masthead --- */
.site-masthead {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 5.25rem;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--sc-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sc-gutter);
  z-index: 200;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.03);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  text-decoration: none;
}

.brand-logo-img {
  height: 2.25rem;
  width: auto;
  object-fit: contain;
  display: block;
}

.brand-tagline {
  font-family: var(--sc-font-mono);
  font-size: 0.82rem;
  color: var(--sc-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-left: 1.25rem;
  border-left: 1px solid var(--sc-line);
  font-weight: 500;
  display: none;
}

@media (min-width: 960px) {
  .brand-tagline { display: block; }
}

.folio-readout {
  display: none;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--sc-font-mono);
  font-size: 0.82rem;
  color: var(--sc-ink-muted);
}

@media (min-width: 1100px) {
  .folio-readout { display: flex; }
}

.folio-readout .chapter-pill {
  background: var(--sc-surface-elev);
  border: 1px solid var(--sc-line);
  padding: 0.25rem 0.75rem;
  border-radius: var(--sc-r-sm);
  color: var(--sc-accent);
  font-weight: 700;
}

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

.btn-rfq-top {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--sc-accent);
  color: var(--sc-accent-ink);
  font-family: var(--sc-font-display);
  font-weight: 700;
  font-size: 0.92rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--sc-r-sm);
  text-decoration: none;
  transition: transform 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.btn-rfq-top:hover {
  background: var(--sc-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
}

/* Floating Chapter Navigation Dock (Right) */
.chapter-dock {
  position: fixed;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  display: none;
  flex-direction: column;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--sc-line);
  padding: 1rem 0.65rem;
  border-radius: 24px;
  backdrop-filter: blur(12px);
  box-shadow: var(--sc-panel-shadow);
}

@media (min-width: 1400px) {
  .chapter-dock { display: flex; }
}

.dock-item {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  position: relative;
}

.dock-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--sc-line-strong);
  transition: transform 160ms ease, background-color 160ms ease;
}

.dock-label {
  position: absolute;
  right: 28px;
  background: var(--sc-surface);
  border: 1px solid var(--sc-line-strong);
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
  color: var(--sc-ink);
  font-family: var(--sc-font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateX(8px);
  transition: opacity 160ms ease, transform 160ms ease;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.dock-item:hover .dock-label {
  opacity: 1;
  transform: translateX(0);
}

.dock-item.active .dock-dot {
  background: var(--sc-accent);
  transform: scale(1.6);
}

/* --- Chapter Sections --- */
.chapter-section {
  position: relative;
  z-index: 1;
  padding: var(--sc-section-pad) 0;
  border-bottom: 1px solid var(--sc-line);
  scroll-margin-top: 5.5rem;
}

.chapter-inner {
  max-width: var(--sc-maxw);
  margin: 0 auto;
  padding: 0 var(--sc-gutter);
}

.chapter-folio-header {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--sc-font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sc-accent);
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.chapter-folio-header .separator {
  color: var(--sc-ink-muted);
}

.chapter-title {
  font-family: var(--sc-font-display);
  font-size: clamp(2.1rem, 1.7rem + 1.8vw, 3.1rem);
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: var(--sc-ink);
  margin: 0 0 1.25rem 0;
  max-width: 48ch;
  font-weight: 800;
}

.chapter-lead {
  font-size: clamp(1.12rem, 1.05rem + 0.35vw, 1.32rem);
  color: var(--sc-ink-soft);
  max-width: 66ch;
  line-height: 1.65;
  margin: 0 0 3rem 0;
}

/* --- CHAPTER 01: Hero Spread --- */
.hero-spread {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: center;
  margin-bottom: 3.5rem;
}

@media (min-width: 1024px) {
  .hero-spread {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4rem;
  }
}

.hero-copy {
  display: flex;
  flex-direction: column;
}

.enterprise-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sc-font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--sc-accent-soft);
  color: var(--sc-accent);
  border: 1px solid var(--sc-accent-border);
  padding: 0.4rem 0.9rem;
  border-radius: var(--sc-r-sm);
  width: fit-content;
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
}

.hero-title {
  font-family: var(--sc-font-display);
  font-size: clamp(2.3rem, 1.8rem + 2.5vw, 3.8rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: var(--sc-ink);
  margin: 0 0 1.5rem 0;
  max-width: 24ch;
  font-weight: 800;
}

.hero-description {
  font-size: clamp(1.15rem, 1.05rem + 0.35vw, 1.35rem);
  color: var(--sc-ink-soft);
  line-height: 1.65;
  max-width: 54ch;
  margin: 0;
}

/* Prominent Full-Width Metric Cards */
.hero-metric-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .hero-metric-cards {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
}

.metric-card {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-md);
  padding: 1.75rem 1.6rem;
  box-shadow: var(--sc-panel-shadow);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.metric-card:hover {
  transform: translateY(-3px);
  border-color: var(--sc-accent);
  box-shadow: var(--sc-hover-shadow);
}

.metric-accent-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--sc-accent);
}

.metric-val {
  font-family: var(--sc-font-mono);
  font-size: clamp(1.55rem, 1.35rem + 0.45vw, 1.95rem);
  font-weight: 800;
  color: var(--sc-ink);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.metric-label {
  font-family: var(--sc-font-mono);
  font-size: 0.82rem;
  color: var(--sc-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.6rem;
  line-height: 1.35;
  font-weight: 700;
}

/* Bigger & Majestic Hero Visual Display */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.hero-bag-display {
  position: relative;
  width: 100%;
  max-width: 580px;
  min-height: 520px;
  border-radius: var(--sc-r-lg);
  background: radial-gradient(circle at center, rgba(37, 99, 235, 0.08) 0%, rgba(241, 245, 249, 0.95) 75%);
  padding: 2.5rem;
  border: 1px solid var(--sc-line);
  box-shadow: var(--sc-panel-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-bag-img {
  width: 100%;
  height: auto;
  max-height: 480px;
  object-fit: contain;
  filter: drop-shadow(0 24px 36px rgba(15, 23, 42, 0.16));
  display: block;
}

/* Callout markers over hero bag */
.spec-pin {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #FFFFFF;
  border: 1px solid var(--sc-line-strong);
  padding: 0.5rem 1rem;
  border-radius: var(--sc-r-sm);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.1);
  font-family: var(--sc-font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--sc-ink);
  white-space: nowrap;
  pointer-events: auto;
  z-index: 10;
}

.spec-pin .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sc-accent);
}

.pin-top-right { top: 6%; right: -2%; }
.pin-mid-left { top: 48%; left: -5%; }
.pin-bottom-right { bottom: 5%; right: 2%; }

@media (max-width: 768px) {
  .spec-pin { position: static; margin-top: 0.5rem; display: flex; }
  .hero-bag-display { padding: 1.5rem; min-height: 380px; }
}

/* --- CHAPTER 02: Architectural Forms Grid --- */
.forms-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

@media (min-width: 640px) {
  .forms-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1100px) {
  .forms-grid { grid-template-columns: repeat(3, 1fr); }
}

.form-card {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-md);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--sc-panel-shadow);
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.form-card:hover {
  transform: translateY(-4px);
  border-color: var(--sc-accent);
  box-shadow: var(--sc-hover-shadow);
}

.form-badge {
  font-family: var(--sc-font-mono);
  font-size: 0.78rem;
  color: var(--sc-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.form-title {
  font-family: var(--sc-font-display);
  font-size: 1.5rem;
  color: var(--sc-ink);
  margin: 0 0 0.75rem 0;
  line-height: 1.25;
  font-weight: 800;
}

.form-desc {
  font-size: 1rem;
  color: var(--sc-ink-soft);
  margin: 0 0 1.5rem 0;
  line-height: 1.6;
  flex-grow: 1;
}

.form-schematic {
  width: 100%;
  height: 200px;
  background: #F8FAFC;
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  padding: 0.5rem;
}

.form-specs-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--sc-line);
  padding-top: 1.25rem;
  font-family: var(--sc-font-mono);
  font-size: 0.82rem;
  color: var(--sc-ink-muted);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-specs-list li {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.form-specs-list li span:last-child {
  color: var(--sc-ink);
  font-weight: 700;
  text-align: right;
}

/* --- CHAPTER 03: Electrostatic Safety Matrix --- */
.matrix-container {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-md);
  box-shadow: var(--sc-panel-shadow);
  overflow-x: auto;
}

.matrix-table {
  width: 100%;
  min-width: 750px;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.98rem;
}

.matrix-table th {
  background: var(--sc-surface-elev);
  padding: 1.15rem 1.35rem;
  font-family: var(--sc-font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sc-ink-muted);
  border-bottom: 1px solid var(--sc-line-strong);
  font-weight: 700;
}

.matrix-table td {
  padding: 1.35rem 1.35rem;
  border-bottom: 1px solid var(--sc-line);
  color: var(--sc-ink-soft);
  vertical-align: middle;
  line-height: 1.55;
}

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

.matrix-table tr:hover td {
  background: rgba(241, 245, 249, 0.6);
}

.type-tag {
  display: inline-block;
  font-family: var(--sc-font-mono);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--sc-r-sm);
  background: var(--sc-surface-elev);
  border: 1px solid var(--sc-line-strong);
  color: var(--sc-ink);
  white-space: nowrap;
}

.type-tag.conductive {
  background: var(--sc-accent-soft);
  border-color: var(--sc-accent);
  color: var(--sc-accent);
}

/* --- CHAPTER 04: The Quality Floor (THE PEAK) --- */
.peak-stage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .peak-stage {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}

.peak-visual-box {
  position: relative;
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-lg);
  padding: 2.5rem;
  overflow: hidden;
  box-shadow: var(--sc-panel-shadow);
}

.peak-bag-cutout {
  width: 100%;
  max-height: 420px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 16px 30px rgba(15, 23, 42, 0.1));
}

.destructive-test-overlay {
  margin-top: 1.75rem;
  background: var(--sc-surface-elev);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-sm);
  padding: 1.25rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  font-family: var(--sc-font-mono);
  text-align: center;
}

.test-stat {
  display: flex;
  flex-direction: column;
}

.test-stat .big {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--sc-accent);
  white-space: nowrap;
}

.test-stat .sub {
  font-size: 0.74rem;
  color: var(--sc-ink-muted);
  text-transform: uppercase;
  margin-top: 0.25rem;
  line-height: 1.35;
  font-weight: 600;
}

.quality-pillars {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.pillar-item {
  background: var(--sc-surface);
  border-left: 4px solid var(--sc-accent);
  padding: 1.35rem 1.6rem;
  border-radius: 0 var(--sc-r-sm) var(--sc-r-sm) 0;
  border-top: 1px solid var(--sc-line);
  border-right: 1px solid var(--sc-line);
  border-bottom: 1px solid var(--sc-line);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.03);
}

.pillar-item h4 {
  font-family: var(--sc-font-display);
  font-size: 1.22rem;
  color: var(--sc-ink);
  margin: 0 0 0.5rem 0;
  line-height: 1.3;
  font-weight: 700;
}

.pillar-item p {
  font-size: 0.98rem;
  color: var(--sc-ink-soft);
  margin: 0;
  line-height: 1.6;
}

/* --- CHAPTER 05: Client Proof & Hubs --- */
.client-logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 3rem;
}

@media (min-width: 640px) {
  .client-logo-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1024px) {
  .client-logo-grid { grid-template-columns: repeat(7, 1fr); }
}

.client-logo-card {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-sm);
  padding: 0.85rem 1.25rem;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.client-logo-card:hover {
  transform: translateY(-3px);
  border-color: var(--sc-accent);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.client-logo-card img {
  max-width: 100%;
  max-height: 42px;
  object-fit: contain;
  transition: transform 160ms ease;
}

.client-logo-card:hover img {
  transform: scale(1.04);
}

.global-hub-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

@media (min-width: 768px) {
  .global-hub-split { grid-template-columns: 1fr 1fr; }
}

.hub-card {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-md);
  padding: 2rem;
  box-shadow: var(--sc-panel-shadow);
}

.hub-card h3 {
  font-family: var(--sc-font-display);
  font-size: 1.5rem;
  color: var(--sc-ink);
  margin: 0 0 0.35rem 0;
  font-weight: 800;
}

.hub-card .hub-region {
  font-family: var(--sc-font-mono);
  font-size: 0.8rem;
  color: var(--sc-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.hub-address {
  font-family: var(--sc-font-mono);
  font-size: 0.92rem;
  color: var(--sc-ink-soft);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.hub-contacts {
  font-family: var(--sc-font-mono);
  font-size: 0.92rem;
  color: var(--sc-ink);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-weight: 600;
}

.hub-contacts a {
  color: var(--sc-ink);
  text-decoration: none;
}

.hub-contacts a:hover {
  color: var(--sc-accent);
}

/* --- CHAPTER 06: Simulator & RFQ Layout --- */
.sim-rfq-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-lg);
  padding: 3rem;
  box-shadow: var(--sc-panel-shadow);
}

@media (min-width: 1024px) {
  .sim-rfq-wrapper {
    grid-template-columns: 1.18fr 0.82fr;
    gap: 3.5rem;
  }
}

.simulator-pane {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sim-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--sc-line);
  padding-bottom: 1rem;
}

.sim-header h3 {
  font-family: var(--sc-font-display);
  font-size: 1.35rem;
  color: var(--sc-ink);
  margin: 0;
  font-weight: 800;
}

.sim-schematic-canvas {
  width: 100%;
  height: 560px;
  background: #F8FAFC;
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.schematic-svg {
  width: 96%;
  height: 96%;
}

.sim-telemetry-tray {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  background: var(--sc-surface-elev);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-sm);
  padding: 1rem 1.25rem;
  font-family: var(--sc-font-mono);
}

.telemetry-node {
  display: flex;
  flex-direction: column;
}

.telemetry-node .tel-label {
  font-size: 0.74rem;
  color: var(--sc-ink-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.telemetry-node .tel-val {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--sc-accent);
  white-space: nowrap;
}

.sim-controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.control-group label {
  font-family: var(--sc-font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--sc-ink-muted);
  letter-spacing: 0.05em;
  font-weight: 700;
}

.control-select, .control-input {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line-strong);
  color: var(--sc-ink);
  padding: 0.75rem 0.85rem;
  border-radius: var(--sc-r-sm);
  font-family: var(--sc-font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.control-select:focus, .control-input:focus {
  border-color: var(--sc-accent);
  box-shadow: 0 0 0 3px var(--sc-accent-soft);
}

/* RFQ Form Side */
.rfq-pane {
  background: var(--sc-surface-elev);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-md);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
}

.rfq-pane h3 {
  font-family: var(--sc-font-display);
  font-size: 1.45rem;
  color: var(--sc-ink);
  margin: 0 0 0.6rem 0;
  line-height: 1.25;
  font-weight: 800;
}

.rfq-pane p {
  font-size: 0.95rem;
  color: var(--sc-ink-soft);
  margin: 0 0 1.75rem 0;
  line-height: 1.6;
}

.rfq-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-row label {
  font-family: var(--sc-font-mono);
  font-size: 0.78rem;
  color: var(--sc-ink-muted);
  text-transform: uppercase;
  font-weight: 700;
}

.form-input, .form-textarea {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line-strong);
  color: var(--sc-ink);
  padding: 0.75rem 0.95rem;
  border-radius: var(--sc-r-sm);
  font-family: var(--sc-font-text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.form-input:focus, .form-textarea:focus {
  border-color: var(--sc-accent);
  box-shadow: 0 0 0 3px var(--sc-accent-soft);
}

.form-textarea {
  resize: vertical;
  min-height: 85px;
}

.btn-submit-rfq {
  background: var(--sc-accent);
  color: var(--sc-accent-ink);
  border: none;
  font-family: var(--sc-font-display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  padding: 0.95rem 1.75rem;
  border-radius: var(--sc-r-sm);
  cursor: pointer;
  margin-top: 0.75rem;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
  transition: background-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.btn-submit-rfq:hover {
  background: var(--sc-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* Colophon / Engineering Footer */
.site-colophon {
  background: #0F172A; /* High-contrast dark navy footer */
  border-top: 1px solid var(--sc-line);
  padding: 4.5rem var(--sc-gutter) 3rem;
  font-family: var(--sc-font-mono);
  font-size: 0.82rem;
  color: #94A3B8;
}

.colophon-grid {
  max-width: var(--sc-maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 3rem;
}

.colophon-col h5 {
  font-size: 0.82rem;
  color: #F8FAFC;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 1rem 0;
  font-weight: 700;
}

.colophon-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.colophon-col a {
  color: #94A3B8;
  text-decoration: none;
  transition: color 160ms ease;
}

.colophon-col a:hover {
  color: var(--sc-accent);
}

.legal-bar {
  max-width: var(--sc-maxw);
  margin: 3rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.78rem;
}

/* Toast Message */
.rfq-success-toast {
  display: none;
  padding: 1.25rem;
  background: #F0FDF4;
  border: 1px solid #86EFAC;
  border-radius: var(--sc-r-sm);
  color: #166534;
  font-family: var(--sc-font-mono);
  font-size: 0.88rem;
  margin-top: 1.25rem;
}

/* Safe animation defaults */
[data-sc-in] {
  opacity: 1;
}

/* RFQ Form 100% Width Stacked Fix */
.rfq-form {
  display: flex !important;
  flex-direction: column !important;
  gap: 1.25rem !important;
  width: 100% !important;
}

.form-row,
.form-field {
  display: flex !important;
  flex-direction: column !important;
  gap: 0.45rem !important;
  width: 100% !important;
}

.form-row label,
.form-field label {
  font-family: var(--sc-font-mono) !important;
  font-size: 0.74rem !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.05em !important;
  color: var(--sc-ink-muted) !important;
  display: block !important;
  width: 100% !important;
}

.form-input,
.form-textarea,
.form-select,
.rfq-form select {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
  background: #FFFFFF !important;
  border: 1px solid var(--sc-line) !important;
  color: var(--sc-ink) !important;
  font-family: var(--sc-font-body) !important;
  font-size: 0.95rem !important;
  font-weight: 500 !important;
  padding: 0.85rem 1.1rem !important;
  border-radius: var(--sc-r-sm) !important;
  outline: none !important;
  display: block !important;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04) !important;
  transition: border-color var(--sc-t-fast), box-shadow var(--sc-t-fast) !important;
}

.form-input:focus,
.form-textarea:focus,
.rfq-form select:focus {
  border-color: var(--sc-accent) !important;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12) !important;
}

.form-textarea {
  resize: vertical !important;
  min-height: 95px !important;
  line-height: 1.5 !important;
}

.btn-submit-rfq {
  width: 100% !important;
  display: block !important;
  background: var(--sc-accent) !important;
  color: #FFFFFF !important;
  font-family: var(--sc-font-display) !important;
  font-size: 1rem !important;
  font-weight: 800 !important;
  letter-spacing: 0.04em !important;
  text-transform: uppercase !important;
  padding: 1.1rem 1.75rem !important;
  border-radius: var(--sc-r-sm) !important;
  border: none !important;
  cursor: pointer !important;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35) !important;
  transition: transform var(--sc-t-fast), background var(--sc-t-fast), box-shadow var(--sc-t-fast) !important;
  margin-top: 0.5rem !important;
  text-align: center !important;
}

.btn-submit-rfq:hover {
  background: #1D4ED8 !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.45) !important;
}

/* Colophon Link List Bullets Removal */
.colophon-col ul {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 0.65rem !important;
}

.colophon-col li {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.colophon-col a {
  color: #94A3B8 !important;
  text-decoration: none !important;
}

.colophon-col a:hover {
  color: var(--sc-accent) !important;
}

.footer-logo-img {
  height: 2.8rem !important;
  width: auto !important;
  max-width: 220px !important;
  object-fit: contain !important;
  margin-bottom: 0.5rem !important;
  display: block !important;
}


/* ============================================================================
   SCROLLCRAFT ANIMATIONS & KINETIC MICRO-INTERACTIONS
   ========================================================================== */

/* 1. Global Scroll Progress Timeline Bar */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, #2563EB, #3B82F6);
  z-index: 1000;
  transition: width 80ms cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.6);
}

/* 2. Hero Floating Bag & Dynamic Spec Pins */
@keyframes bagFloat {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-8px) rotate(0.3deg);
  }
}

.hero-bag-display img {
  animation: bagFloat 6s ease-in-out infinite !important;
  will-change: transform;
}

@keyframes radarPulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(37, 99, 235, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
  }
}

.spec-pin {
  transition: transform 200ms var(--sc-ease-out), box-shadow 200ms var(--sc-ease-out), border-color 200ms var(--sc-ease-out) !important;
  cursor: default;
}

.spec-pin:hover {
  transform: scale(1.04) translateY(-2px) !important;
  border-color: var(--sc-accent) !important;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.12) !important;
}

.spec-pin::before {
  animation: radarPulse 2.4s cubic-bezier(0.24, 0, 0.38, 1) infinite !important;
}

/* 3. Metric Cards Interactive Lift */
.metric-card {
  transition: transform 220ms var(--sc-ease-out), box-shadow 220ms var(--sc-ease-out), border-color 220ms var(--sc-ease-out) !important;
  position: relative;
  overflow: hidden;
}

.metric-card:hover {
  transform: translateY(-4px) !important;
  border-color: var(--sc-accent) !important;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08) !important;
}

/* 4. Portfolio Filter Pills (Chapter 02) */
.forms-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 2rem;
}

.filter-pill {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  color: var(--sc-ink-muted);
  font-family: var(--sc-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.55rem 1.15rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 160ms var(--sc-ease-out);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03);
}

.filter-pill:hover {
  border-color: var(--sc-accent);
  color: var(--sc-ink);
  transform: translateY(-1px);
}

.filter-pill.active {
  background: #0F172A;
  border-color: #0F172A;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

/* 5. 6-Card Portfolio Interactive States */
.form-card {
  transition: transform 240ms var(--sc-ease-out), box-shadow 240ms var(--sc-ease-out), border-color 240ms var(--sc-ease-out), opacity 240ms ease !important;
  display: flex;
  flex-direction: column;
}

.form-card:hover {
  transform: translateY(-6px) !important;
  border-color: var(--sc-accent) !important;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08) !important;
}

.form-card:hover .form-schematic img {
  transform: scale(1.05);
}

.form-schematic img {
  transition: transform 300ms var(--sc-ease-out) !important;
}

.form-card.hidden {
  display: none !important;
}

/* 6. Electrostatic Matrix Interactive Rows */
.electro-row {
  transition: background 180ms ease, transform 180ms var(--sc-ease-out);
}

.electro-row:hover {
  background: rgba(37, 99, 235, 0.04) !important;
}

/* 7. Scroll-Triggered Reveal Animations */
.sc-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.sc-reveal.sc-in {
  opacity: 1;
  transform: translateY(0);
}


/* Chapter 06: Streamlined 3-Column Simulator Grid & Single-Row Telemetry */
.sim-telemetry-tray,
.sim-telemetry-tray.tray-4col {
  display: grid !important;
  grid-template-columns: repeat(2, 1fr) !important;
  gap: 0.75rem !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  margin: 0 !important;
  width: 100% !important;
}

@media (min-width: 900px) {
  .sim-telemetry-tray,
  .sim-telemetry-tray.tray-4col {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 0.85rem !important;
  }
}

.telemetry-node {
  background: var(--sc-surface-elev) !important;
  border: 1px solid var(--sc-line) !important;
  border-radius: var(--sc-r-sm) !important;
  padding: 1.1rem 0.9rem !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 0.35rem !important;
  position: relative !important;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03) !important;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease !important;
}

.tel-label {
  font-family: var(--sc-font-mono) !important;
  font-size: 0.68rem !important;
  color: var(--sc-ink-muted) !important;
  text-transform: uppercase !important;
  letter-spacing: 0.06em !important;
  font-weight: 700 !important;
  white-space: nowrap !important;
}

.tel-val {
  font-family: var(--sc-font-mono) !important;
  font-size: 1.15rem !important;
  font-weight: 800 !important;
  color: var(--sc-ink) !important;
  letter-spacing: -0.02em !important;
  line-height: 1.2 !important;
}

.sim-controls-grid {
  display: grid !important;
  grid-template-columns: 1fr !important;
  gap: 1.25rem !important;
  width: 100% !important;
}

@media (min-width: 600px) {
  .sim-controls-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (min-width: 960px) {
  .sim-controls-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }
}

.control-group {
  display: flex !important;
  flex-direction: column !important;
  gap: 0.45rem !important;
  width: 100% !important;
}

.control-group label {
  font-family: var(--sc-font-mono) !important;
  font-size: 0.72rem !important;
  font-weight: 700 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.05em !important;
  color: var(--sc-ink-muted) !important;
  display: block !important;
}

.control-select {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
  background: #FFFFFF !important;
  border: 1px solid var(--sc-line) !important;
  color: var(--sc-ink) !important;
  font-family: var(--sc-font-body) !important;
  font-size: 0.92rem !important;
  font-weight: 500 !important;
  padding: 0.8rem 1rem !important;
  border-radius: var(--sc-r-sm) !important;
  outline: none !important;
  cursor: pointer !important;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04) !important;
  transition: border-color var(--sc-t-fast), box-shadow var(--sc-t-fast) !important;
  appearance: auto !important;
}

.control-select:focus {
  border-color: var(--sc-accent) !important;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12) !important;
}


/* ============================================================================
   CHAPTER 06: DEDICATED TECHNICAL RFQ & INQUIRY FORM
   ========================================================================== */
.rfq-container-card {
  max-width: 920px;
  margin: 0 auto 3rem auto;
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-lg);
  padding: 3rem clamp(1.5rem, 4vw, 3.5rem);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
}

.rfq-main-form {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  width: 100%;
}

.rfq-form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
  width: 100%;
}

@media (min-width: 680px) {
  .rfq-form-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.4rem 1.6rem;
  }
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  width: 100%;
}

.form-field label {
  font-family: var(--sc-font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--sc-ink-muted);
}

.form-field .form-input,
.form-field .form-textarea,
.form-field select {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
  background: #FFFFFF !important;
  border: 1px solid var(--sc-line) !important;
  color: var(--sc-ink) !important;
  font-family: var(--sc-font-body) !important;
  font-size: 0.95rem !important;
  font-weight: 500 !important;
  padding: 0.85rem 1.15rem !important;
  border-radius: var(--sc-r-sm) !important;
  outline: none !important;
  display: block !important;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03) !important;
  transition: border-color var(--sc-t-fast), box-shadow var(--sc-t-fast) !important;
}

.form-field .form-input:focus,
.form-field .form-textarea:focus,
.form-field select:focus {
  border-color: var(--sc-accent) !important;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12) !important;
}

.form-field .form-textarea {
  resize: vertical !important;
  min-height: 105px !important;
  line-height: 1.55 !important;
}

.btn-submit-rfq {
  width: 100% !important;
  display: block !important;
  background: var(--sc-accent) !important;
  color: #FFFFFF !important;
  font-family: var(--sc-font-display) !important;
  font-size: 1.05rem !important;
  font-weight: 800 !important;
  letter-spacing: 0.04em !important;
  text-transform: uppercase !important;
  padding: 1.2rem 2rem !important;
  border-radius: var(--sc-r-sm) !important;
  border: none !important;
  cursor: pointer !important;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35) !important;
  transition: transform var(--sc-t-fast), background var(--sc-t-fast), box-shadow var(--sc-t-fast) !important;
  margin-top: 0.5rem !important;
  text-align: center !important;
}

.btn-submit-rfq:hover {
  background: #1D4ED8 !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.45) !important;
}

.rfq-assurance-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--sc-line);
}

.assurance-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--sc-font-mono);
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--sc-ink-muted);
}

.assurance-item svg {
  flex-shrink: 0;
}

.rfq-success-toast {
  display: none;
  background: #F0FDF4;
  border: 1px solid #BBF7D0;
  border-radius: var(--sc-r-sm);
  padding: 1.25rem 1.5rem;
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: #166534;
  line-height: 1.6;
  box-shadow: 0 4px 12px rgba(22, 101, 52, 0.08);
}

/* 3 Quick Desks Cards Below Form */
.direct-desks-grid {
  max-width: 920px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .direct-desks-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.desk-card {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.02);
}

.desk-tag {
  font-family: var(--sc-font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--sc-accent);
}

.desk-card h4 {
  font-family: var(--sc-font-display);
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--sc-ink);
  margin: 0 0 0.25rem 0;
}

.desk-card p {
  font-size: 0.85rem;
  color: var(--sc-ink-muted);
  line-height: 1.45;
  margin: 0;
}

.desk-card a {
  color: var(--sc-ink);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--sc-t-fast);
}

.desk-card a:hover {
  color: var(--sc-accent);
}


/* ============================================================================
   ENLARGED HEADER & FOOTER LOGOS
   ========================================================================== */
.brand-logo-img {
  height: 2.5rem !important;
  width: auto !important;
  max-width: 220px !important;
  object-fit: contain !important;
  display: block !important;
}

.footer-logo-img {
  height: 4.4rem !important;
  width: auto !important;
  max-width: 360px !important;
  object-fit: contain !important;
  margin-bottom: 0.75rem !important;
  display: block !important;
}


/* ============================================================================
   CHAPTER 02: MODULAR COMPONENT ANATOMY & SUB-SYSTEMS
   ========================================================================== */
.anatomy-nav-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 2.75rem;
}

.anatomy-tab {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  color: var(--sc-ink-muted);
  font-family: var(--sc-font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.6rem 1.25rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 160ms var(--sc-ease-out);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03);
}

.anatomy-tab:hover {
  border-color: var(--sc-accent);
  color: var(--sc-ink);
  transform: translateY(-1px);
}

.anatomy-tab.active {
  background: #0F172A;
  border-color: #0F172A;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.anatomy-group {
  margin-bottom: 3.5rem;
  transition: opacity 220ms ease;
}

.anatomy-group.hidden {
  display: none !important;
}

.anatomy-group-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--sc-line);
  padding-bottom: 0.75rem;
  margin-bottom: 1.75rem;
}

.group-heading {
  font-family: var(--sc-font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--sc-ink);
  letter-spacing: -0.01em;
  margin: 0;
}

.group-count {
  font-family: var(--sc-font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--sc-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Sub-Systems Grid (Inlets, Outlets, Covers, Lifting) */
.subsystems-grid {
  display: grid;
  gap: 1.5rem;
  width: 100%;
}

.subsystems-grid.grid-4col {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .subsystems-grid.grid-4col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .subsystems-grid.grid-4col {
    grid-template-columns: repeat(4, 1fr);
  }
}

.subsystems-grid.grid-3col {
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .subsystems-grid.grid-3col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .subsystems-grid.grid-3col {
    grid-template-columns: repeat(3, 1fr);
  }
}

.subsystem-card {
  background: var(--sc-surface);
  border: 1px solid var(--sc-line);
  border-radius: var(--sc-r-md);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
  transition: transform 220ms var(--sc-ease-out), border-color 220ms var(--sc-ease-out), box-shadow 220ms var(--sc-ease-out);
}

.subsystem-card:hover {
  transform: translateY(-5px);
  border-color: var(--sc-accent);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.07);
}

.subsystem-schematic {
  height: 165px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  padding: 0.5rem;
}

.subsystem-schematic img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 280ms var(--sc-ease-out);
}

.subsystem-card:hover .subsystem-schematic img {
  transform: scale(1.08);
}

.subsystem-title {
  font-family: var(--sc-font-display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--sc-ink);
  margin: 0 0 0.45rem 0;
}

.subsystem-desc {
  font-size: 0.88rem;
  color: var(--sc-ink-muted);
  line-height: 1.5;
  margin: 0 0 1.25rem 0;
  flex-grow: 1;
}

.subsystem-tag {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--sc-font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--sc-ink);
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid var(--sc-line);
  padding: 0.3rem 0.65rem;
  border-radius: var(--sc-r-sm);
}

.subsystem-card:hover .subsystem-tag {
  background: rgba(37, 99, 235, 0.08);
  border-color: rgba(37, 99, 235, 0.25);
  color: var(--sc-accent);
}


/* ============================================================================
   EXPANDED WIDE RFQ FORM & DIRECT DESKS (Full Container Width)
   ========================================================================== */
.rfq-container-card {
  max-width: var(--sc-container) !important;
  width: 100% !important;
  box-sizing: border-box !important;
  margin: 0 auto 3rem auto !important;
  background: var(--sc-surface) !important;
  border: 1px solid var(--sc-line) !important;
  border-radius: var(--sc-r-lg) !important;
  padding: 3.5rem clamp(1.5rem, 5vw, 4.5rem) !important;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04) !important;
}

.rfq-main-form {
  display: flex !important;
  flex-direction: column !important;
  gap: 2rem !important;
  width: 100% !important;
}

.rfq-form-grid {
  display: grid !important;
  grid-template-columns: 1fr !important;
  gap: 1.6rem 2.2rem !important;
  width: 100% !important;
}

@media (min-width: 768px) {
  .rfq-form-grid {
    grid-template-columns: 1fr 1fr !important;
  }
}

.direct-desks-grid {
  max-width: var(--sc-container) !important;
  width: 100% !important;
  box-sizing: border-box !important;
  margin: 0 auto !important;
  display: grid !important;
  grid-template-columns: 1fr !important;
  gap: 1.5rem !important;
}

@media (min-width: 768px) {
  .direct-desks-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }
}


/* ============================================================================
   STANDARDIZED SCHEMATIC CONTAINERS & CARD BALANCING
   ========================================================================== */
.form-schematic,
.subsystem-schematic {
  height: 220px !important;
  width: 100% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin-bottom: 1.25rem !important;
  padding: 0.5rem !important;
  box-sizing: border-box !important;
}

.form-schematic img,
.subsystem-schematic img {
  max-width: 100% !important;
  max-height: 100% !important;
  width: auto !important;
  height: auto !important;
  object-fit: contain !important;
  filter: drop-shadow(0 2px 6px rgba(15, 23, 42, 0.06)) !important;
  transition: transform 280ms var(--sc-ease-out) !important;
}

.subsystem-card:hover .subsystem-schematic img,
.form-card:hover .form-schematic img {
  transform: scale(1.06) !important;
}


/* ============================================================================
   COMPREHENSIVE MOBILE & TABLET RESPONSIVENESS OVERHAUL (< 1024px & < 768px)
   ========================================================================== */

@media (max-width: 1024px) {
  .chapter-dock {
    display: none !important;
  }
}

@media (max-width: 768px) {
  :root {
    --sc-gutter: 1.25rem;
    --sc-section-pad: 3.5rem;
  }

  html, body {
    overflow-x: hidden !important;
    width: 100% !important;
    position: relative;
  }

  /* --- Top Masthead --- */
  .site-masthead {
    height: 4.25rem !important;
    padding: 0 1rem !important;
    gap: 0.5rem !important;
    background: rgba(255, 255, 255, 0.96) !important;
  }

  .brand-lockup {
    gap: 0.5rem !important;
  }

  .brand-logo-img {
    height: 2.05rem !important;
    max-width: 145px !important;
  }

  .brand-tagline {
    display: none !important;
  }

  .folio-readout {
    display: none !important;
  }

  .btn-rfq-top {
    padding: 0.45rem 0.8rem !important;
    font-size: 0.75rem !important;
    gap: 0.35rem !important;
    white-space: nowrap !important;
  }

  .btn-rfq-top svg {
    width: 12px !important;
    height: 12px !important;
  }

  /* --- Chapter Section Container Spacing & Anchor Offsets --- */
  .chapter-section {
    padding: 3.5rem 0 !important;
    scroll-margin-top: 4.5rem !important;
  }

  #standard {
    padding-top: 6.25rem !important;
    padding-bottom: 2.5rem !important;
  }

  .chapter-inner {
    padding: 0 1.25rem !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .chapter-folio-header {
    font-size: 0.72rem !important;
    flex-wrap: wrap !important;
    gap: 0.35rem !important;
    margin-bottom: 0.85rem !important;
  }

  .chapter-title {
    font-size: 1.85rem !important;
    line-height: 1.2 !important;
    margin-bottom: 1rem !important;
    max-width: 100% !important;
  }

  .chapter-lead {
    font-size: 1.0rem !important;
    line-height: 1.55 !important;
    margin-bottom: 2rem !important;
    max-width: 100% !important;
  }

  /* --- Chapter 01: Hero Spread --- */
  .hero-spread {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
    margin-bottom: 2.25rem !important;
    width: 100% !important;
  }

  .hero-copy {
    width: 100% !important;
    max-width: 100% !important;
  }

  .enterprise-tag {
    font-size: 0.75rem !important;
    padding: 0.35rem 0.75rem !important;
    margin-bottom: 1rem !important;
  }

  .hero-title {
    font-size: 2.15rem !important;
    line-height: 1.15 !important;
    max-width: 100% !important;
    margin-bottom: 1.15rem !important;
  }

  .hero-description {
    font-size: 1.02rem !important;
    line-height: 1.6 !important;
    max-width: 100% !important;
  }

  /* Hero Bag Stage & Responsive Callout Pins */
  .hero-visual {
    width: 100% !important;
    max-width: 100% !important;
  }

  .hero-bag-display {
    min-height: auto !important;
    height: auto !important;
    padding: 1.5rem 1rem !important;
    max-width: 100% !important;
    width: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    gap: 0.75rem !important;
    box-sizing: border-box !important;
  }

  .hero-bag-img {
    max-height: 270px !important;
    width: auto !important;
    max-width: 100% !important;
    margin-bottom: 0.5rem !important;
  }

  .spec-pin {
    position: static !important;
    width: 100% !important;
    max-width: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    margin: 0 !important;
    font-size: 0.75rem !important;
    padding: 0.45rem 0.85rem !important;
    white-space: normal !important;
    box-sizing: border-box !important;
    transform: none !important;
    border-radius: var(--sc-r-sm) !important;
  }

  .spec-pin .dot {
    flex-shrink: 0 !important;
  }

  /* Hero Quad Metrics */
  .hero-metric-cards {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.85rem !important;
    width: 100% !important;
  }

  .metric-card {
    padding: 1.25rem 1rem !important;
  }

  .metric-val {
    font-size: 1.35rem !important;
    letter-spacing: -0.01em !important;
  }

  .metric-label {
    font-size: 0.7rem !important;
    margin-top: 0.35rem !important;
  }

  /* --- Chapter 02: Architectural Forms & Component Anatomy --- */
  .anatomy-nav-bar {
    display: flex !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    gap: 0.6rem !important;
    width: 100% !important;
    margin-bottom: 1.75rem !important;
    padding: 0.25rem 0 0.65rem 0 !important;
    scrollbar-width: none !important;
  }

  .anatomy-nav-bar::-webkit-scrollbar {
    display: none !important;
  }

  .anatomy-tab {
    padding: 0.5rem 0.95rem !important;
    font-size: 0.74rem !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
  }

  .anatomy-group-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.35rem !important;
    margin-bottom: 1.25rem !important;
    padding-bottom: 0.65rem !important;
  }

  .group-heading {
    font-size: 1.25rem !important;
  }

  .forms-grid,
  .subsystems-grid,
  .grid-3col,
  .grid-4col {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
    width: 100% !important;
  }

  .form-card,
  .subsystem-card {
    padding: 1.5rem 1.2rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .form-schematic,
  .subsystem-schematic {
    height: 200px !important;
    margin-bottom: 1rem !important;
  }

  .form-title,
  .subsystem-title {
    font-size: 1.2rem !important;
  }

  /* --- Chapter 03: Electrostatic Table Matrix --- */
  .matrix-container {
    width: 100% !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    border-radius: var(--sc-r-md) !important;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04) !important;
    margin-top: 1.5rem !important;
    box-sizing: border-box !important;
  }

  .matrix-table {
    min-width: 600px !important;
    width: 100% !important;
  }

  .matrix-table th,
  .matrix-table td {
    padding: 0.85rem 0.75rem !important;
    font-size: 0.78rem !important;
  }

  /* --- Chapter 04: Quality Floor & Proof Testing --- */
  .peak-stage {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
    width: 100% !important;
  }

  .peak-visual-box {
    padding: 1.5rem 1rem !important;
    min-height: auto !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .peak-bag-cutout {
    max-height: 260px !important;
    width: 100% !important;
    object-fit: contain !important;
  }

  .destructive-test-overlay {
    position: static !important;
    width: 100% !important;
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 0.5rem !important;
    margin-top: 1.25rem !important;
    padding: 0.85rem 0.5rem !important;
    background: rgba(15, 23, 42, 0.04) !important;
    box-sizing: border-box !important;
  }

  .test-stat {
    text-align: center !important;
  }

  .test-stat .big {
    font-size: 1.15rem !important;
  }

  .test-stat .sub {
    font-size: 0.62rem !important;
    line-height: 1.2 !important;
  }

  .quality-pillars {
    gap: 0.85rem !important;
    width: 100% !important;
  }

  .pillar-item {
    padding: 1.25rem 1.1rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .pillar-item h4 {
    font-size: 1.05rem !important;
  }

  .pillar-item p {
    font-size: 0.92rem !important;
  }

  /* --- Chapter 05: Global Logistics Hubs --- */
  .global-hub-split {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
    width: 100% !important;
  }

  .hub-card {
    padding: 1.5rem 1.2rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .hub-card h3 {
    font-size: 1.25rem !important;
  }

  /* --- Chapter 06: RFQ Engine Form --- */
  .rfq-container-card {
    padding: 1.75rem 1.2rem !important;
    border-radius: var(--sc-r-md) !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .rfq-form-grid {
    grid-template-columns: 1fr !important;
    gap: 1.15rem !important;
    width: 100% !important;
  }

  .form-field {
    width: 100% !important;
  }

  .form-input,
  .form-textarea {
    font-size: 16px !important; /* Critical for iOS: prevents auto-zoom viewport jumping */
    padding: 0.85rem 0.9rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .form-field label {
    font-size: 0.74rem !important;
  }

  .btn-submit-rfq {
    width: 100% !important;
    font-size: 0.88rem !important;
    padding: 1.05rem 1.25rem !important;
    justify-content: center !important;
    text-align: center !important;
  }

  .rfq-assurance-strip {
    flex-direction: column !important;
    gap: 0.75rem !important;
    align-items: flex-start !important;
    margin-top: 1.5rem !important;
    padding-top: 1.25rem !important;
  }

  .assurance-item {
    font-size: 0.75rem !important;
  }

  /* --- Colophon Footer --- */
  .site-colophon {
    padding: 3.5rem 1.25rem 2.5rem !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .colophon-grid {
    grid-template-columns: 1fr !important;
    gap: 2.25rem !important;
    width: 100% !important;
  }

  .footer-logo-img {
    height: 3.4rem !important;
    max-width: 260px !important;
  }

  .legal-bar {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.65rem !important;
    margin-top: 2rem !important;
    padding-top: 1.5rem !important;
    font-size: 0.75rem !important;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.9rem !important;
  }

  .chapter-title {
    font-size: 1.65rem !important;
  }

  .hero-metric-cards {
    grid-template-columns: 1fr !important;
  }

  .destructive-test-overlay {
    grid-template-columns: 1fr !important;
    gap: 0.65rem !important;
  }
}