/* ==========================================================================
   VANTA S-01 — Design Token System & Base Reset
   Aesthetic Direction: Alpine Monolith & Coachbuilt Sanctuary
   ========================================================================== */

:root {
  /* Core Palette (6 Intentional Tokens) */
  --bg-slate: #12161A;         /* Nocturnal Slate — Deep mineral canvas */
  --bg-titanium: #1B2127;      /* Milled Titanium — Architectural bays */
  --bg-atelier-day: #DFE3E6;   /* Alpine Fog — High-contrast daylight studio chapter */
  --text-limestone: #ECEAE4;   /* Limestone Mist — Primary light text */
  --text-pewter: #969EA7;      /* Pewter Alloy — Secondary prose & tolerances */
  --accent-amber: #C88A4B;     /* Anodized Amber — Warm tungsten/bronze highlight */

  /* Supporting Structural Tones */
  --border-subtle: rgba(236, 234, 228, 0.11);
  --border-strong: rgba(236, 234, 228, 0.22);
  --day-text-primary: #14181D;
  --day-text-secondary: #454E57;
  --day-surface: #E9ECEE;
  --day-border: rgba(20, 24, 29, 0.14);

  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout & Spacing */
  --container-max: 1360px;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);
  --section-space: clamp(5rem, 10vw, 8.5rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-slate);
  color: var(--text-limestone);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-slate);
  color: var(--text-limestone);
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
input {
  font: inherit;
  color: inherit;
}

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

/* Accessibility Focus */
:focus-visible {
  outline: 2px solid var(--accent-amber);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent-amber);
  color: var(--bg-slate);
  padding: 0.6rem 1.1rem;
  font-weight: 600;
  z-index: 999;
}

.skip-link:focus {
  top: 1rem;
}

/* ==========================================================================
   Typography Scale (The Elements of Typographic Style)
   ========================================================================== */

.hero-headline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3.1rem, 6.2vw, 5.6rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--text-limestone);
  max-width: 14ch;
}

.section-headline {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.4rem, 4.4vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--text-limestone);
  max-width: 18ch;
}

.section-headline-dark {
  color: var(--day-text-primary);
}

.hero-kicker,
.section-tag {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--accent-amber);
  margin-bottom: 0.75rem;
  letter-spacing: 0.01em;
}

.section-tag-dark {
  color: #8F5B22;
}

.body-prose {
  font-size: clamp(1.02rem, 1.15vw, 1.125rem);
  line-height: 1.68;
  color: var(--text-pewter);
  max-width: 62ch;
}

.body-prose + .body-prose {
  margin-top: 1.25rem;
}

.body-prose-dark {
  color: var(--day-text-secondary);
}

/* ==========================================================================
   Buttons & Controls
   ========================================================================== */

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.65rem;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 2px;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease;
}

.btn-primary {
  background-color: var(--text-limestone);
  color: var(--bg-slate);
  border: 1px solid var(--text-limestone);
}

.btn-primary:hover {
  background-color: var(--accent-amber);
  border-color: var(--accent-amber);
  color: #0E1114;
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-limestone);
  border: 1px solid var(--border-strong);
}

.btn-ghost:hover {
  border-color: var(--text-limestone);
  background-color: rgba(236, 234, 228, 0.05);
}

.btn-compact {
  padding: 0.55rem 1.15rem;
  font-size: 0.875rem;
}

.btn-full {
  width: 100%;
  padding: 1rem 1.75rem;
  font-size: 1rem;
}

/* ==========================================================================
   Site Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(18, 22, 26, 0.86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text-limestone);
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.02em;
  line-height: 1;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}

.nav-link {
  font-size: 0.9375rem;
  color: var(--text-pewter);
  transition: color 160ms ease;
}

.nav-link:hover {
  color: var(--text-limestone);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.build-availability {
  font-size: 0.8125rem;
  color: var(--text-pewter);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.build-availability::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-amber);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  padding-top: clamp(2.5rem, 5vw, 4.5rem);
  padding-bottom: var(--section-space);
  border-bottom: 1px solid var(--border-subtle);
}

.hero-container,
.section-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.hero-editorial {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 4vw, 4.5rem);
  align-items: end;
  margin-bottom: clamp(2.25rem, 4vw, 3.5rem);
}

.hero-lead {
  font-size: clamp(1.05rem, 1.25vw, 1.2rem);
  line-height: 1.62;
  color: var(--text-pewter);
  margin-bottom: 1.75rem;
  max-width: 54ch;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hero-stage {
  margin-bottom: 2.25rem;
}

.hero-image-frame {
  position: relative;
  border-radius: 3px;
  overflow: hidden;
  background-color: var(--bg-titanium);
  border: 1px solid var(--border-subtle);
  aspect-ratio: 16 / 8.6;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 54%;
  animation: heroReveal 1.1s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes heroReveal {
  from {
    opacity: 0;
    transform: scale(1.025);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.hero-lighting-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(18, 22, 26, 0.12) 0%,
    rgba(18, 22, 26, 0) 45%,
    rgba(18, 22, 26, 0.72) 100%
  );
  pointer-events: none;
}

.hero-caption-pill {
  position: absolute;
  bottom: 1.25rem;
  left: 1.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.9rem;
  background: rgba(18, 22, 26, 0.82);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  color: var(--text-pewter);
}

.status-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-amber);
}

.hero-ledger {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.ledger-item {
  padding: 1.5rem 1.5rem 1.5rem 0;
  border-right: 1px solid var(--border-subtle);
}

.ledger-item:nth-child(n+2) {
  padding-left: 1.5rem;
}

.ledger-item:last-child {
  border-right: none;
  padding-right: 0;
}

.ledger-term {
  font-size: 0.875rem;
  color: var(--text-pewter);
  margin-bottom: 0.35rem;
}

.ledger-value {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 3vw, 2.75rem);
  line-height: 1.05;
  color: var(--text-limestone);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.35rem;
}

.ledger-value .unit {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--accent-amber);
}

.ledger-note {
  font-size: 0.8125rem;
  color: var(--text-pewter);
}

/* ==========================================================================
   Vehicle Introduction Section
   ========================================================================== */

.intro-section {
  padding: var(--section-space) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.intro-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}

.intro-narrative .section-headline {
  margin-bottom: 1.5rem;
}

.dimension-schematic {
  margin-top: 2.5rem;
  padding: 1.5rem;
  background-color: var(--bg-titanium);
  border: 1px solid var(--border-subtle);
}

.dim-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0;
  font-size: 0.9rem;
}

.dim-row + .dim-row {
  border-top: 1px solid rgba(236, 234, 228, 0.06);
}

.dim-label {
  color: var(--text-pewter);
}

.dim-dots {
  flex: 1;
  border-bottom: 1px dotted rgba(150, 158, 167, 0.28);
}

.dim-measure {
  color: var(--text-limestone);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.intro-figure {
  margin-bottom: 2rem;
}

.intro-image-wrap {
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-titanium);
  aspect-ratio: 16 / 10;
}

.intro-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure-caption {
  margin-top: 0.85rem;
  font-size: 0.84rem;
  color: var(--text-pewter);
  line-height: 1.5;
}

.intro-callout-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.callout-block {
  padding: 1.5rem;
  background-color: var(--bg-titanium);
  border-left: 2px solid var(--accent-amber);
}

.callout-title {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-limestone);
  margin-bottom: 0.5rem;
}

.callout-copy {
  font-size: 0.92rem;
  color: var(--text-pewter);
  line-height: 1.6;
}

/* ==========================================================================
   Performance & Telemetry Workbench
   ========================================================================== */

.telemetry-section {
  padding: var(--section-space) 0;
  background: linear-gradient(180deg, var(--bg-slate) 0%, #151A20 100%);
  border-bottom: 1px solid var(--border-subtle);
}

.telemetry-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: end;
  margin-bottom: 2.75rem;
}

.telemetry-intro {
  font-size: 1.05rem;
  color: var(--text-pewter);
  max-width: 54ch;
  justify-self: end;
}

.telemetry-workbench {
  border: 1px solid var(--border-strong);
  background-color: var(--bg-titanium);
}

.regime-controls {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--border-subtle);
}

.regime-tab {
  background: transparent;
  border: none;
  border-right: 1px solid var(--border-subtle);
  padding: 1.25rem 1.4rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: background-color 160ms ease;
}

.regime-tab:last-child {
  border-right: none;
}

.regime-tab:hover {
  background-color: rgba(236, 234, 228, 0.04);
}

.regime-tab.is-active {
  background-color: rgba(200, 138, 75, 0.12);
  box-shadow: inset 0 -2px 0 var(--accent-amber);
}

.regime-name {
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--text-limestone);
}

.regime-speed {
  font-size: 0.8125rem;
  color: var(--text-pewter);
  font-variant-numeric: tabular-nums;
}

.telemetry-display {
  display: grid;
  grid-template-columns: 7fr 5fr;
  border-bottom: 1px solid var(--border-subtle);
}

.aero-diagram-bay {
  padding: 2rem;
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.diagram-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-pewter);
  margin-bottom: 1rem;
}

.diagram-Clearance {
  padding: 0.3rem 0.7rem;
  background-color: var(--bg-slate);
  border: 1px solid var(--border-subtle);
  color: var(--text-limestone);
  font-variant-numeric: tabular-nums;
}

.svg-wind-tunnel {
  background-color: var(--bg-slate);
  border: 1px solid var(--border-subtle);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.wind-tunnel-svg {
  width: 100%;
  height: auto;
}

#svg-chassis-group,
#svg-front-splitter,
#svg-rear-foil,
#svg-rear-diffuser {
  transition: transform 420ms cubic-bezier(0.22, 1, 0.36, 1);
}

.diagram-footnote {
  font-size: 0.92rem;
  color: var(--text-pewter);
  line-height: 1.58;
}

.telemetry-metrics-column {
  display: grid;
  grid-template-rows: repeat(4, 1fr);
}

.metric-card {
  padding: 1.35rem 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.metric-card:last-child {
  border-bottom: none;
}

.metric-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.metric-title {
  font-size: 0.875rem;
  color: var(--text-pewter);
}

.metric-sub {
  font-size: 0.8125rem;
  color: var(--accent-amber);
  font-variant-numeric: tabular-nums;
}

.metric-big-number {
  font-family: var(--font-display);
  font-size: 2.25rem;
  line-height: 1.05;
  color: var(--text-limestone);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.6rem;
}

.metric-big-number .unit {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-pewter);
}

.metric-bar-track {
  width: 100%;
  height: 4px;
  background-color: rgba(236, 234, 228, 0.1);
  overflow: hidden;
}

.metric-bar-fill {
  height: 100%;
  background-color: var(--accent-amber);
  transition: width 380ms cubic-bezier(0.22, 1, 0.36, 1);
}

.performance-footer-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background-color: var(--bg-slate);
}

.perf-stat {
  padding: 1.35rem 1.75rem;
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.perf-stat:last-child {
  border-right: none;
}

.perf-stat-value {
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--text-limestone);
  font-variant-numeric: tabular-nums;
}

.perf-stat-label {
  font-size: 0.8125rem;
  color: var(--text-pewter);
}

/* ==========================================================================
   Design Philosophy & Material Atelier (High-Contrast Daylight Section)
   ========================================================================== */

.philosophy-section {
  padding: var(--section-space) 0;
  background-color: var(--bg-atelier-day);
  color: var(--day-text-primary);
}

.philosophy-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 4vw, 4.5rem);
  align-items: end;
  margin-bottom: 3.25rem;
}

.atelier-showcase {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 2.5rem;
  align-items: stretch;
  margin-bottom: 3.5rem;
}

.cabin-stage {
  height: 100%;
}

.cabin-image-wrapper {
  position: relative;
  height: 100%;
  min-height: 440px;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--day-border);
  background-color: #1A1F24;
}

.cabin-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: filter 320ms ease;
}

.cabin-swatch-overlay {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 1rem;
  background: rgba(20, 24, 29, 0.86);
  backdrop-filter: blur(8px);
  color: var(--text-limestone);
  font-size: 0.84rem;
}

.swatch-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: #B67641;
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.atelier-controls-panel {
  background-color: var(--day-surface);
  border: 1px solid var(--day-border);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.atelier-panel-title {
  font-family: var(--font-display);
  font-size: 1.9rem;
  font-weight: 400;
  color: var(--day-text-primary);
  margin-bottom: 0.35rem;
}

.atelier-panel-subtitle {
  font-size: 0.92rem;
  color: var(--day-text-secondary);
  margin-bottom: 1.5rem;
}

.material-selector-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 1.5rem;
}

.material-option {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  padding: 0.9rem 1rem;
  background-color: #F4F6F7;
  border: 1px solid var(--day-border);
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.material-option:hover {
  border-color: #7D8790;
}

.material-option.is-selected {
  background-color: #14181D;
  color: var(--text-limestone);
  border-color: #14181D;
}

.material-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.swatch-leather {
  background: radial-gradient(circle at 30% 30%, #C8844B, #8B4F22);
}

.swatch-eucalyptus {
  background: radial-gradient(circle at 30% 30%, #594A42, #2B231F);
}

.swatch-titanium {
  background: linear-gradient(135deg, #B8C0C8 0%, #687078 50%, #9CA4AC 100%);
}

.swatch-mineral {
  background: radial-gradient(circle at 30% 30%, #37414A, #151A1F);
}

.material-meta {
  display: flex;
  flex-direction: column;
}

.material-name {
  font-size: 0.9375rem;
  font-weight: 600;
}

.material-origin {
  font-size: 0.8rem;
  opacity: 0.78;
}

.material-detail-box {
  padding-top: 1.25rem;
  border-top: 1px solid var(--day-border);
}

.material-detail-quote {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--day-text-secondary);
  margin-bottom: 0.9rem;
}

.material-spec-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--day-text-primary);
  font-variant-numeric: tabular-nums;
}

.philosophy-tenets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--day-border);
}

.tenet-heading {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 400;
  color: var(--day-text-primary);
  margin-bottom: 0.5rem;
}

.tenet-body {
  font-size: 0.95rem;
  color: var(--day-text-secondary);
  line-height: 1.62;
}

/* ==========================================================================
   Solid-State Architecture & Blueprint Section
   ========================================================================== */

.architecture-section {
  padding: var(--section-space) 0;
  background-color: var(--bg-slate);
  border-bottom: 1px solid var(--border-subtle);
}

.architecture-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: end;
  margin-bottom: 3rem;
}

.architecture-sub {
  font-size: 1.02rem;
  color: var(--text-pewter);
  max-width: 54ch;
  justify-self: end;
}

.blueprint-explorer {
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-titanium);
}

.blueprint-canvas-wrap {
  padding: 2rem;
  background-color: #0F1317;
  border-bottom: 1px solid var(--border-subtle);
}

.blueprint-svg {
  width: 100%;
  height: auto;
}

.bp-subsystem {
  opacity: 0.42;
  transition: opacity 240ms ease;
}

.bp-subsystem.is-highlighted {
  opacity: 1;
}

.bp-hotspot {
  cursor: pointer;
}

.architecture-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.arch-card {
  background: transparent;
  border: none;
  border-right: 1px solid var(--border-subtle);
  padding: 1.6rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background-color 160ms ease;
}

.arch-card:last-child {
  border-right: none;
}

.arch-card:hover {
  background-color: rgba(236, 234, 228, 0.03);
}

.arch-card.is-active {
  background-color: rgba(200, 138, 75, 0.1);
  box-shadow: inset 0 2px 0 var(--accent-amber);
}

.arch-card-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.arch-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-limestone);
}

.arch-card-metric {
  font-size: 0.82rem;
  color: var(--accent-amber);
  font-variant-numeric: tabular-nums;
}

.arch-card-desc {
  font-size: 0.88rem;
  color: var(--text-pewter);
  line-height: 1.55;
}

/* ==========================================================================
   Commissioning & Reservation Section
   ========================================================================== */

.commission-section {
  padding: var(--section-space) 0;
  background-color: var(--bg-slate);
}

.commission-layout {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: start;
}

.commission-narrative .section-headline {
  margin-bottom: 1.25rem;
}

.commission-terms {
  margin-top: 2.5rem;
  border-top: 1px solid var(--border-subtle);
}

.term-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.92rem;
}

.term-row dt {
  color: var(--text-pewter);
}

.term-row dd {
  color: var(--text-limestone);
  font-weight: 500;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.commission-form-card {
  background-color: var(--bg-titanium);
  border: 1px solid var(--border-strong);
  padding: clamp(1.75rem, 3.5vw, 3rem);
}

.form-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  margin-bottom: 0.35rem;
}

.form-subtitle {
  font-size: 0.92rem;
  color: var(--text-pewter);
  margin-bottom: 2rem;
}

.form-fieldset {
  border: none;
  margin-bottom: 1.75rem;
}

.fieldset-legend {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-limestone);
  margin-bottom: 0.75rem;
}

.spec-radio-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.spec-choice {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.15rem;
  background-color: var(--bg-slate);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.spec-choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.spec-choice.is-active {
  border-color: var(--accent-amber);
  background-color: rgba(200, 138, 75, 0.08);
}

.spec-choice-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
}

.spec-choice-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-limestone);
}

.spec-choice-price {
  font-size: 0.85rem;
  color: var(--accent-amber);
  font-variant-numeric: tabular-nums;
}

.spec-choice-detail {
  font-size: 0.8rem;
  color: var(--text-pewter);
  line-height: 1.45;
}

.atelier-pill-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

.pill-choice {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 0.5rem;
  background-color: var(--bg-slate);
  border: 1px solid var(--border-subtle);
  font-size: 0.88rem;
  cursor: pointer;
  text-align: center;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.pill-choice input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.pill-choice.is-active {
  border-color: var(--accent-amber);
  background-color: rgba(200, 138, 75, 0.12);
  color: var(--text-limestone);
}

.form-fields-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.15rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}

.field-label {
  font-size: 0.84rem;
  color: var(--text-pewter);
}

.field-input {
  padding: 0.8rem 0.95rem;
  background-color: var(--bg-slate);
  border: 1px solid var(--border-subtle);
  color: var(--text-limestone);
  font-size: 0.9375rem;
  border-radius: 2px;
}

.field-input::placeholder {
  color: rgba(150, 158, 167, 0.45);
}

.field-input:focus {
  border-color: var(--accent-amber);
  outline: none;
}

.form-error {
  color: #E5886E;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.form-legal {
  margin-top: 0.85rem;
  font-size: 0.8rem;
  color: var(--text-pewter);
  line-height: 1.5;
}

/* Confirmation Receipt View */
.reservation-confirmation {
  padding: 1rem 0;
}

.confirmation-badge {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  background-color: rgba(200, 138, 75, 0.16);
  border: 1px solid var(--accent-amber);
  color: var(--accent-amber);
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

.confirmation-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 400;
  margin-bottom: 0.75rem;
}

.confirmation-body {
  font-size: 0.98rem;
  color: var(--text-pewter);
  margin-bottom: 1.75rem;
}

.confirmation-receipt {
  background-color: var(--bg-slate);
  border: 1px solid var(--border-subtle);
  padding: 1.25rem;
  margin-bottom: 1.75rem;
}

.receipt-row {
  display: flex;
  justify-content: space-between;
  padding: 0.55rem 0;
  font-size: 0.9rem;
}

.receipt-row + .receipt-row {
  border-top: 1px solid var(--border-subtle);
}

.receipt-row dt {
  color: var(--text-pewter);
}

.receipt-row dd {
  color: var(--text-limestone);
  font-weight: 500;
}

/* ==========================================================================
   Site Footer
   ========================================================================== */

.site-footer {
  padding: 4rem 0 2.5rem;
  background-color: #0D1013;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-pewter);
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.5fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-address {
  margin-top: 1rem;
  line-height: 1.65;
}

.footer-col-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-limestone);
  margin-bottom: 0.85rem;
}

.footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-list a:hover {
  color: var(--text-limestone);
}

.footer-homologation {
  line-height: 1.6;
}

.footer-bottom {
  padding-top: 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.back-to-top {
  color: var(--text-limestone);
}

/* ==========================================================================
   Responsive Breakpoints & Reduced Motion
   ========================================================================== */

@media (max-width: 1080px) {
  .hero-editorial,
  .intro-grid,
  .telemetry-header,
  .telemetry-display,
  .philosophy-intro-grid,
  .atelier-showcase,
  .architecture-header,
  .commission-layout {
    grid-template-columns: 1fr;
  }

  .telemetry-intro,
  .architecture-sub {
    justify-self: start;
  }

  .aero-diagram-bay {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }

  .telemetry-metrics-column {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
  }

  .architecture-cards {
    grid-template-columns: 1fr 1fr;
  }

  .arch-card:nth-child(2) {
    border-right: none;
  }

  .arch-card:nth-child(1),
  .arch-card:nth-child(2) {
    border-bottom: 1px solid var(--border-subtle);
  }
}

@media (max-width: 760px) {
  .primary-nav,
  .build-availability {
    display: none;
  }

  .hero-ledger,
  .regime-controls,
  .performance-footer-strip,
  .philosophy-tenets,
  .architecture-cards,
  .spec-radio-grid,
  .atelier-pill-row,
  .form-fields-grid,
  .footer-grid,
  .intro-callout-pair,
  .telemetry-metrics-column {
    grid-template-columns: 1fr;
  }

  .ledger-item {
    padding: 1.15rem 0;
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }

  .ledger-item:nth-child(n+2) {
    padding-left: 0;
  }

  .regime-tab,
  .perf-stat,
  .arch-card {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }

  .hero-image-frame {
    aspect-ratio: 16 / 11;
  }

  .hero-caption-pill {
    position: static;
    width: 100%;
    border: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}