/* ==========================================================================
   SOVERIX GATE — Sovereign Black Marble & 24K Cast Brass Visual System
   Zero-Slop Institutional Architecture | GPU-Composited | Tabular Numerics
   ========================================================================== */

:root {
  /* Obsidian Marble Elevation Ramp (60% Dominant Surface) */
  --bg-canvas: #07090D;
  --bg-surface-1: #0D1117;
  --bg-surface-2: #131922;
  --bg-surface-3: #19212D;
  --bg-glass: rgba(13, 17, 23, 0.86);

  /* Specular Brass Hairlines (30% Structural Framing) */
  --border-subtle: rgba(206, 168, 98, 0.14);
  --border-hairline: rgba(206, 168, 98, 0.24);
  --border-strong: rgba(212, 175, 55, 0.54);
  --border-emerald: rgba(46, 204, 143, 0.34);

  /* 24K Cast Brass & Telemetry Accents (10% Conversion Focus) */
  --brass-primary: #D4AF37;
  --brass-bright: #E5C158;
  --brass-muted: #CEA862;
  --brass-wash: rgba(212, 175, 55, 0.08);
  --brass-wash-strong: rgba(212, 175, 55, 0.15);
  --ink-on-brass: #07090D;

  /* Semantic Telemetry */
  --emerald-nsw: #2ECC8F;
  --emerald-wash: rgba(46, 204, 143, 0.10);
  --crimson-alert: #E06C75;

  /* High-Contrast WCAG AA+ Typography */
  --text-primary: #F4F1EA;
  --text-secondary: #BDB7AA;
  --text-muted: #8E887B;

  /* Bespoke Editorial Font Stacks */
  --font-display: 'Cormorant Garamond', 'Noto Sans SC', 'Noto Sans Thai', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', 'Noto Sans SC', 'Noto Sans Thai', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Noto Sans SC', 'Noto Sans Thai', ui-monospace, SFMono-Regular, monospace;

  /* Spatial 8pt Rhythm & Containers */
  --container-max: 1280px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Tactile Spring & Ease Curves */
  --ease-out-expo: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-ambient: 0 24px 64px rgba(0, 0, 0, 0.62), 0 1px 0 rgba(229, 193, 88, 0.12) inset;
  --shadow-elevated: 0 32px 80px rgba(0, 0, 0, 0.78), 0 1px 0 rgba(229, 193, 88, 0.22) inset;
}

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

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

body {
  background-color: var(--bg-canvas);
  background-image:
    radial-gradient(ellipse 80% 50% at 75% -10%, rgba(212, 175, 55, 0.07), transparent 65%),
    radial-gradient(ellipse 60% 45% at 12% 18%, rgba(206, 168, 98, 0.045), transparent 60%),
    linear-gradient(180deg, #07090D 0%, #090C12 45%, #07090D 100%);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: clip;
  position: relative;
}

/* Subtle Architectural Grid Vein Overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, rgba(206, 168, 98, 0.028) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(206, 168, 98, 0.028) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 24%, rgba(0, 0, 0, 0.85), transparent 82%);
  -webkit-mask-image: radial-gradient(circle at 50% 24%, rgba(0, 0, 0, 0.85), transparent 82%);
}

/* Multi-Script Typography Calibration (TH, ZH, RU) */
html[lang="th"] {
  line-height: 1.72;
}

html[lang="th"] .display-headline,
html[lang="th"] .section-title,
html[lang="th"] .mandate-title {
  font-family: 'Noto Sans Thai', var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.005em;
  line-height: 1.36;
}

html[lang="zh"] .display-headline,
html[lang="zh"] .section-title,
html[lang="zh"] .mandate-title {
  font-family: 'Noto Sans SC', var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.32;
}

html[lang="ru"] .display-headline,
html[lang="ru"] .section-title {
  line-height: 1.12;
}

/* Tabular Numerics Discipline */
.tabular,
.mono-num,
input[type="number"],
.fee-band,
.metric-val,
.calc-num,
.comparison-table td {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1, "zero" 1;
}

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

button,
input,
select,
textarea {
  font-family: inherit;
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
  position: relative;
  z-index: 1;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   1. Top Sovereign Corridor Telemetry Bar
   ========================================================================== */
.corridor-bar {
  background-color: #05070A;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 12px;
  position: relative;
  z-index: 30;
}

.corridor-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 38px;
  padding-block: 6px;
  flex-wrap: wrap;
}

.corridor-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--emerald-nsw);
  box-shadow: 0 0 0 3px rgba(46, 204, 143, 0.18);
  display: inline-block;
  flex-shrink: 0;
  animation: pulseBeacon 2.8s var(--ease-out-expo) infinite;
}

@keyframes pulseBeacon {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.28);
    opacity: 0.65;
  }
}

.corridor-domains {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.domain-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: color 180ms var(--ease-out-expo), border-color 180ms var(--ease-out-expo), background-color 180ms var(--ease-out-expo);
}

.domain-pill:hover {
  color: var(--brass-bright);
  border-color: var(--border-hairline);
}

.domain-pill.is-primary {
  color: var(--brass-primary);
  border-color: var(--border-hairline);
  background-color: var(--brass-wash);
}

/* ==========================================================================
   2. Sticky Institutional Header & Instant <16ms Language Switcher
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-hairline);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 76px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.brand-crest {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: linear-gradient(145deg, rgba(212, 175, 55, 0.14), rgba(13, 17, 23, 0.92));
  color: var(--brass-primary);
  flex-shrink: 0;
}

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

.brand-name {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.14em;
  line-height: 1.05;
  color: var(--text-primary);
  text-transform: uppercase;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--brass-muted);
  text-transform: uppercase;
  margin-top: 3px;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  padding-block: 8px;
  position: relative;
  transition: color 180ms var(--ease-out-expo);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 1px;
  background-color: var(--brass-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 200ms var(--ease-out-expo);
}

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

.nav-link:hover::after {
  transform: scaleX(1);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-switcher {
  display: inline-flex;
  align-items: center;
  background-color: var(--bg-surface-1);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  min-width: 40px;
  min-height: 34px;
  padding-inline: 8px;
  border-radius: 3px;
  cursor: pointer;
  transition: background-color 150ms var(--ease-out-expo), color 150ms var(--ease-out-expo), transform 150ms var(--ease-out-expo);
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn.is-active {
  background-color: var(--brass-primary);
  color: var(--ink-on-brass);
  font-weight: 600;
}

/* Institutional Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 11px 20px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: transform 180ms var(--ease-out-expo), background-color 180ms var(--ease-out-expo), border-color 180ms var(--ease-out-expo), color 180ms var(--ease-out-expo), opacity 180ms var(--ease-out-expo);
}

.btn:active {
  transform: scale(0.985);
}

.btn-brass {
  background: linear-gradient(180deg, var(--brass-bright) 0%, var(--brass-primary) 100%);
  color: var(--ink-on-brass);
  border-color: var(--brass-bright);
  box-shadow: 0 8px 24px rgba(212, 175, 55, 0.18);
}

.btn-brass:hover {
  background: linear-gradient(180deg, #F0CF68 0%, #DFB93E 100%);
  transform: translate3d(0, -1px, 0);
}

.btn-outline {
  background-color: rgba(19, 25, 34, 0.72);
  color: var(--text-primary);
  border-color: var(--border-hairline);
}

.btn-outline:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-surface-3);
  color: var(--brass-bright);
  transform: translate3d(0, -1px, 0);
}

.btn-sm {
  min-height: 40px;
  padding: 8px 14px;
  font-size: 12.5px;
}

.mobile-nav-toggle {
  display: none;
  appearance: none;
  background-color: var(--bg-surface-1);
  border: 1px solid var(--border-hairline);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  place-items: center;
  cursor: pointer;
}

/* ==========================================================================
   3. Hero Viewport & First-Screen Interactive Gate Calculator
   ========================================================================== */
.hero-section {
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(56px, 7vw, 96px);
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.eyebrow-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border-hairline);
  background-color: var(--brass-wash);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-bright);
  margin-bottom: 20px;
}

.display-headline {
  font-family: var(--font-display);
  font-size: clamp(2.45rem, 4.3vw, 4.05rem);
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: -0.022em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-lead {
  font-size: clamp(1rem, 1.15vw, 1.125rem);
  color: var(--text-secondary);
  line-height: 1.68;
  max-width: 60ch;
  margin-bottom: 28px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.metric-slab {
  background-color: var(--bg-surface-1);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.metric-val {
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  font-weight: 600;
  color: var(--brass-primary);
  line-height: 1.15;
  margin-bottom: 4px;
}

.metric-label {
  font-size: 12px;
  line-height: 1.4;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.corridor-footnote {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12.5px;
  color: var(--text-muted);
  border-left: 2px solid var(--brass-primary);
  padding-left: 12px;
}

/* Interactive Gate Calculator Terminal */
.calc-terminal {
  background: linear-gradient(180deg, var(--bg-surface-2) 0%, var(--bg-surface-1) 100%);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-elevated);
  overflow: hidden;
  animation: heroEnter 520ms var(--ease-out-expo) both;
}

@keyframes heroEnter {
  from {
    opacity: 0;
    transform: translate3d(0, 14px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

.calc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 22px;
  background-color: rgba(7, 9, 13, 0.72);
  border-bottom: 1px solid var(--border-hairline);
}

.calc-header-title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--brass-bright);
}

.calc-live-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--emerald-nsw);
  background-color: var(--emerald-wash);
  border: 1px solid var(--border-emerald);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.calc-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.calc-field-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.calc-row-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 14px;
}

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

.field-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.field-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
}

.field-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--brass-bright);
  background-color: var(--brass-wash);
  border: 1px solid var(--border-hairline);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.select-control,
.input-control,
.textarea-control {
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  font-size: 16px; /* Prevents iOS Safari auto-zoom */
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 160ms var(--ease-out-expo), background-color 160ms var(--ease-out-expo);
}

@media (min-width: 960px) {
  .select-control,
  .input-control,
  .textarea-control {
    font-size: 14px;
  }
}

.select-control:focus,
.input-control:focus,
.textarea-control:focus {
  border-color: var(--brass-primary);
  background-color: #0A0E15;
}

.range-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 44px;
  padding: 8px 12px;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 5px;
  background: rgba(206, 168, 98, 0.22);
  border-radius: 99px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--brass-primary);
  border: 2px solid var(--bg-canvas);
  box-shadow: 0 0 0 2px var(--brass-primary);
  cursor: pointer;
  transition: transform 140ms var(--ease-out-expo);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.12);
}

.cif-presets {
  display: flex;
  gap: 6px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.preset-chip {
  appearance: none;
  background-color: var(--bg-surface-1);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 9px;
  min-height: 28px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 150ms var(--ease-out-expo), color 150ms var(--ease-out-expo), background-color 150ms var(--ease-out-expo);
}

.preset-chip:hover,
.preset-chip.is-active {
  color: var(--brass-bright);
  border-color: var(--border-strong);
  background-color: var(--brass-wash);
}

/* Real-Time Computed Output Slab */
.calc-results {
  background-color: rgba(7, 9, 13, 0.78);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.duty-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.duty-box {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-surface-1);
}

.duty-box.is-preferential {
  border-color: var(--border-emerald);
  background-color: rgba(46, 204, 143, 0.06);
}

.duty-box.is-mfn-active {
  border-color: var(--border-strong);
  background-color: var(--brass-wash);
}

.duty-caption {
  font-size: 11.5px;
  color: var(--text-muted);
  margin-bottom: 4px;
  display: block;
}

.duty-rate-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.duty-pct {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--text-primary);
}

.duty-box.is-preferential .duty-pct {
  color: var(--emerald-nsw);
}

.duty-usd {
  font-size: 12.5px;
  color: var(--text-secondary);
}

.treaty-note {
  font-family: var(--font-mono);
  font-size: 11px;
  margin-top: 6px;
  color: var(--emerald-nsw);
}

.duty-box.is-mfn-active .treaty-note {
  color: var(--brass-bright);
}

.tax-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding-block: 10px;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.tax-cell-label {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
}

.tax-cell-val {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2px;
  display: block;
}

.tax-cell-val.is-savings {
  color: var(--emerald-nsw);
}

.license-path-box {
  background-color: var(--bg-surface-2);
  border-left: 3px solid var(--brass-primary);
  padding: 10px 12px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.license-path-title {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--brass-muted);
  margin-bottom: 4px;
}

.license-path-val {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.48;
}

.timeline-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12.5px;
}

.timeline-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.timeline-k {
  font-size: 11px;
  color: var(--text-muted);
}

.timeline-v {
  font-weight: 600;
  color: var(--brass-bright);
}

.calc-cta-full {
  width: 100%;
}

/* ==========================================================================
   4. Section Architecture & Asymmetric Bento Grid (4 Core Mandates)
   ========================================================================== */
.section-block {
  padding-block: clamp(64px, 8vw, 112px);
  border-bottom: 1px solid var(--border-subtle);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: clamp(36px, 5vw, 56px);
  flex-wrap: wrap;
}

.section-head-copy {
  max-width: 720px;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brass-primary);
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.3vw, 3.1rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.section-desc {
  margin-top: 14px;
  font-size: 15.5px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Asymmetric 12-Col Bento Grid (5+7, 6+6 — NEVER 3 equal icon cards) */
.bento-mandates {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}

.mandate-card {
  background: linear-gradient(180deg, var(--bg-surface-2) 0%, var(--bg-surface-1) 100%);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 34px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 22px;
  box-shadow: var(--shadow-ambient);
  transition: transform 220ms var(--ease-out-expo), border-color 220ms var(--ease-out-expo);
}

.mandate-card:hover {
  transform: translate3d(0, -3px, 0);
  border-color: var(--border-strong);
}

.mandate-span-5 {
  grid-column: span 5;
}

.mandate-span-7 {
  grid-column: span 7;
}

.mandate-span-6 {
  grid-column: span 6;
}

.mandate-card.is-sovereign-retainer {
  border-color: var(--border-strong);
  background:
    radial-gradient(circle at 92% 8%, rgba(212, 175, 55, 0.11), transparent 52%),
    linear-gradient(180deg, #151C27 0%, #0D1117 100%);
}

.mandate-top {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mandate-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.mandate-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--brass-primary);
  letter-spacing: 0.06em;
}

.mandate-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  background-color: rgba(7, 9, 13, 0.65);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.mandate-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.1vw, 1.95rem);
  font-weight: 600;
  line-height: 1.18;
  color: var(--text-primary);
}

.fee-box {
  padding: 12px 16px;
  background-color: rgba(7, 9, 13, 0.66);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.fee-band {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  font-weight: 600;
  color: var(--brass-bright);
}

.fee-note {
  font-size: 12px;
  color: var(--text-muted);
}

/* Visual Pipeline Diagram inside Mandate 02 */
.fda-pipeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  padding: 12px;
  background-color: rgba(7, 9, 13, 0.55);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.pipe-step {
  padding: 8px 10px;
  background-color: var(--bg-surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  position: relative;
}

.pipe-step.is-final {
  border-color: var(--border-emerald);
  background-color: rgba(46, 204, 143, 0.06);
}

.pipe-idx {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--brass-muted);
  display: block;
}

.pipe-step.is-final .pipe-idx {
  color: var(--emerald-nsw);
}

.pipe-label {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2px;
  display: block;
  line-height: 1.3;
}

.scope-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.8px;
  color: var(--text-secondary);
  line-height: 1.55;
}

.scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background-color: var(--brass-primary);
  transform: rotate(45deg);
}

.mandate-footer {
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* ==========================================================================
   5. Execution Protocol & Three-Domain Infrastructure Ring
   ========================================================================== */
.protocol-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 36px;
}

.step-card {
  background-color: var(--bg-surface-1);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 200ms var(--ease-out-expo), border-color 200ms var(--ease-out-expo);
}

.step-card:hover {
  transform: translate3d(0, -2px, 0);
  border-color: var(--border-strong);
}

.step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--brass-primary);
}

.step-sla {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--emerald-nsw);
}

.step-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.step-body {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.58;
}

.ecosystem-ring {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 22px;
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
}

.eco-node {
  padding: 16px 18px;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.eco-domain {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--brass-bright);
}

.eco-role {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   6. Structural IOR Comparison Matrix & Shipment Gating Shield
   ========================================================================== */
.matrix-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-lg);
  background-color: var(--bg-surface-1);
  box-shadow: var(--shadow-ambient);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13.5px;
  line-height: 1.5;
}

.comparison-table th {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--text-primary);
  background-color: rgba(7, 9, 13, 0.8);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.comparison-table td:first-child {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--text-secondary);
}

.comparison-table td {
  color: var(--text-muted);
}

.comparison-table th.col-soverix,
.comparison-table td.col-soverix {
  background-color: rgba(212, 175, 55, 0.07);
  color: var(--text-primary);
  border-left: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
}

.comparison-table th.col-soverix {
  color: var(--brass-bright);
}

.gating-banner {
  margin-top: 24px;
  padding: 22px 26px;
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border-hairline);
  border-left: 3px solid var(--brass-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.gating-copy {
  max-width: 780px;
}

.gating-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.gating-text {
  font-size: 13.5px;
  color: var(--text-secondary);
}

/* ==========================================================================
   7. Statutory Compliance Bar & Institutional Footer
   ========================================================================== */
.statutory-section {
  padding-block: 48px 64px;
  background-color: #05070A;
}

.statutory-box {
  padding: 22px 24px;
  background-color: var(--bg-surface-1);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  margin-bottom: 40px;
}

.statutory-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-primary);
  margin-bottom: 12px;
  display: block;
}

.statutes-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.statute-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-secondary);
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
}

.statutory-note {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.55;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-muted);
  margin-bottom: 14px;
}

.footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 13.5px;
  color: var(--text-secondary);
}

.footer-list a:hover {
  color: var(--brass-bright);
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-muted);
}

/* ==========================================================================
   8. VIP Concierge Drawer ("Eva — International Trade Desk") & Floating Pill
   ========================================================================== */
.floating-desk-btn {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 45;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 18px;
  background-color: var(--bg-surface-2);
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  box-shadow: var(--shadow-elevated);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: transform 200ms var(--ease-out-expo), border-color 200ms var(--ease-out-expo), background-color 200ms var(--ease-out-expo);
}

.floating-desk-btn:hover {
  transform: translate3d(0, -2px, 0);
  background-color: var(--bg-surface-3);
  border-color: var(--brass-bright);
}

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background-color: rgba(4, 6, 10, 0.76);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms var(--ease-out-expo);
}

.drawer-backdrop.is-open {
  opacity: 1;
  pointer-events: auto;
}

.eva-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(540px, 100vw);
  z-index: 100;
  background-color: var(--bg-surface-1);
  border-left: 1px solid var(--border-strong);
  box-shadow: -24px 0 80px rgba(0, 0, 0, 0.85);
  display: flex;
  flex-direction: column;
  transform: translate3d(100%, 0, 0);
  transition: transform 260ms var(--ease-out-expo);
}

.eva-drawer.is-open {
  transform: translate3d(0, 0, 0);
}

.drawer-head {
  padding: 20px 24px;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.drawer-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--emerald-nsw);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.drawer-title {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.15;
}

.drawer-sub {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.drawer-close {
  appearance: none;
  width: 44px;
  height: 44px;
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  display: grid;
  place-items: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 160ms var(--ease-out-expo), color 160ms var(--ease-out-expo);
}

.drawer-close:hover {
  border-color: var(--brass-primary);
  color: var(--brass-bright);
}

.drawer-body {
  padding: 22px 24px 32px;
  overflow-y: auto;
  flex: 1;
}

.rfq-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.rfq-row-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.textarea-control {
  min-height: 84px;
  resize: vertical;
}

.rfq-privacy {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.5;
}

.rfq-direct-bar {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--text-muted);
}

.rfq-direct-bar a {
  font-family: var(--font-mono);
  color: var(--brass-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Instant Confirmation Panel */
.rfq-confirmation {
  display: none;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
  background-color: var(--bg-surface-2);
  border: 1px solid var(--border-emerald);
  border-radius: var(--radius-md);
}

.rfq-confirmation.is-visible {
  display: flex;
}

.conf-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--emerald-nsw);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.conf-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

.conf-summary {
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.65;
  white-space: pre-wrap;
}

.conf-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ==========================================================================
   9. Responsive Breakpoints & Motion Accessibility
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .mandate-span-5,
  .mandate-span-7,
  .mandate-span-6 {
    grid-column: span 12;
  }

  .protocol-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ecosystem-ring,
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 960px) {
  .primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px var(--gutter);
    background-color: var(--bg-surface-1);
    border-bottom: 1px solid var(--border-strong);
  }

  .primary-nav.is-open {
    display: flex;
  }

  .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .mobile-nav-toggle {
    display: grid;
  }

  .header-cta-desktop {
    display: none;
  }

  .lang-btn {
    min-height: 40px;
    min-width: 42px;
  }
}

@media (max-width: 640px) {
  .corridor-domains {
    display: none;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .calc-row-split,
  .duty-comparison,
  .rfq-row-2,
  .protocol-steps {
    grid-template-columns: 1fr;
  }

  .tax-strip {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .fda-pipeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .floating-desk-btn {
    right: 16px;
    bottom: 16px;
    padding: 10px 14px;
  }
}

@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;
  }
}