/* ==========================================================================
   M.A.R.S. COMPANION LLC — Valuation Dossier (value.teduza.com)
   Palette: Imperial Burgundy, Silk Ivory & Champagne Vermeil
   ========================================================================== */

:root {
  --bg-canvas: #120509;
  --bg-surface: #1b080f;
  --bg-surface-elevated: #270d17;
  --bg-surface-soft: rgba(39, 13, 23, 0.56);
  --text-primary: #f6efe9;
  --text-secondary: #cbb5bc;
  --text-muted: #967b84;

  --accent-gold: #e0b983;
  --accent-gold-bright: #f2d4a7;
  --accent-gold-dim: rgba(224, 185, 131, 0.3);
  --accent-gold-wash: rgba(224, 185, 131, 0.08);
  --accent-crimson: #b83351;

  --border-hairline: rgba(246, 239, 233, 0.12);
  --border-strong: rgba(246, 239, 233, 0.24);

  /* 5-Pillar Jewel Swatches */
  --seg-1: #e0b983; /* 20 Owned UK IPO (45.3%) */
  --seg-2: #cc7a7f; /* MARS-001 Prototype (17.9%) */
  --seg-3: #a63a57; /* M.A.R.S. & V.E.N.U.S. Systems (14.1%) */
  --seg-4: #79223b; /* 6 Licensed UK IPO (12.3%) */
  --seg-5: #4f1526; /* Research Lab & Entity (10.4%) */

  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --container-max: 78rem;
  --gutter: clamp(1rem, 4vw, 3.25rem);
  --ease-atelier: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 190ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  font-weight: 400;
  letter-spacing: 0.01em;
  background-color: var(--bg-canvas);
  background-image:
    radial-gradient(ellipse 72% 46% at 50% -4%, rgba(114, 24, 52, 0.44), transparent 72%),
    radial-gradient(ellipse 46% 36% at 88% 24%, rgba(82, 16, 38, 0.28), transparent 70%);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  transition: opacity 200ms ease;
}

body.menu-open {
  overflow: hidden;
}

html.is-leaving body {
  opacity: 0;
}

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

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

h1,
h2,
h3,
h4,
p,
dl,
dd,
ul,
ol {
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 150;
  background: var(--accent-gold);
  color: var(--bg-canvas);
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
}

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

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Below-the-fold smooth scroll reveals */
html.js-enabled [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition:
    opacity 720ms var(--ease-atelier),
    transform 760ms var(--ease-atelier);
}

html.js-enabled [data-reveal].is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* ==========================================================================
   Floating Architectural Masthead (Redesigned Header)
   ========================================================================== */
.masthead-wrap {
  position: sticky;
  top: 0;
  z-index: 80;
  padding-top: 0.65rem;
  padding-inline: clamp(0.65rem, 3.5vw, 3.25rem);
  pointer-events: none;
}

@media (min-width: 1024px) {
  .masthead-wrap {
    padding-top: 1rem;
  }
}

.masthead {
  pointer-events: auto;
  max-width: var(--container-max);
  width: 100%;
  margin-inline: auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  min-height: 3.5rem;
  padding-inline: 0.75rem;
  overflow: hidden;
  background-color: rgba(24, 7, 13, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--accent-gold-dim);
  border-radius: 4px;
  box-shadow: 0 18px 42px rgba(6, 1, 3, 0.5);
}

@media (min-width: 1024px) {
  .masthead {
    gap: 1.75rem;
    min-height: 4.25rem;
    padding-inline: 1.5rem;
  }
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1.5px;
  background: linear-gradient(90deg, var(--accent-crimson), var(--accent-gold), var(--accent-gold-bright));
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

/* Zone 1: Single-line Brand Title */
.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  flex: 1 1 auto;
  min-height: 44px;
}

@media (min-width: 1024px) {
  .brand-link {
    flex: 0 0 auto;
    gap: 0.7rem;
  }
}

.brand-crest {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--accent-gold-dim);
  padding: 2px;
  background-color: #090306;
  flex-shrink: 0;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

@media (min-width: 480px) {
  .brand-crest {
    width: 30px;
    height: 30px;
  }
}

.brand-link:hover .brand-crest {
  transform: scale(1.06);
  border-color: var(--accent-gold);
}

.brand-name {
  font-family: var(--font-display);
  font-size: clamp(0.76rem, 3.35vw, 1.15rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  white-space: nowrap;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Zone 2: Numbered Editorial Chapter Nav */
.primary-nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}

.primary-nav a {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  padding-block: 0.45rem;
  transition: color var(--transition-fast);
}

.nav-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-gold);
  opacity: 0.8;
}

.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1.5px;
  background-color: var(--accent-gold);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 240ms var(--ease-atelier);
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: var(--text-primary);
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after {
  transform: scaleX(1);
}

/* Zone 3: Single Framed Language Switcher Action */
.header-action {
  display: none;
  align-items: center;
  flex-shrink: 0;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  background-color: rgba(18, 5, 9, 0.7);
}

.lang-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.35rem;
  min-height: 34px;
  padding-inline: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-radius: 2px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.lang-link[aria-current="page"] {
  background-color: var(--accent-gold);
  color: #16050a;
  font-weight: 600;
}

/* Mobile Menu Trigger Button */
.menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 38px;
  padding: 0.4rem 0.68rem;
  flex-shrink: 0;
  white-space: nowrap;
  border: 1px solid var(--accent-gold-dim);
  border-radius: 3px;
  background-color: var(--bg-surface-elevated);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-primary);
  transition: border-color var(--transition-fast);
}

.menu-toggle:hover {
  border-color: var(--accent-gold);
}

.menu-dots {
  display: grid;
  grid-template-columns: repeat(2, 4px);
  gap: 3px;
}

.menu-dots i {
  width: 4px;
  height: 4px;
  background-color: var(--accent-gold);
  display: block;
}

@media (min-width: 1024px) {
  .primary-nav {
    display: flex;
  }
  .header-action {
    display: flex;
  }
  .menu-toggle {
    display: none;
  }
}

/* ==========================================================================
   Right-Side Slide-Over Burgundy Curtain Drawer (Mobile)
   ========================================================================== */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: 90;
  background-color: rgba(8, 2, 4, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 260ms var(--ease-atelier), visibility 260ms;
}

.drawer-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.side-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(88vw, 24rem);
  z-index: 100;
  background: linear-gradient(175deg, #210912 0%, #110408 100%);
  border-left: 1px solid var(--accent-gold-dim);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.5rem 1.5rem 2rem;
  overflow-y: auto;
  transform: translate3d(100%, 0, 0);
  visibility: hidden;
  transition: transform 340ms var(--ease-atelier), visibility 340ms;
}

.side-drawer.is-open {
  transform: translate3d(0, 0, 0);
  visibility: visible;
}

@media (min-width: 1024px) {
  .drawer-backdrop,
  .side-drawer {
    display: none;
  }
}

.drawer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.15rem;
  border-bottom: 1px solid var(--border-hairline);
}

.drawer-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent-gold);
}

.drawer-close {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-hairline);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-primary);
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  margin-top: 1.25rem;
}

.drawer-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
  min-height: 52px;
  border-bottom: 1px solid var(--border-hairline);
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--text-primary);
}

.drawer-nav a span:last-child {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-gold);
}

.drawer-bottom {
  display: grid;
  gap: 1.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-hairline);
}

.drawer-langs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
}

.drawer-lang-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 46px;
  border: 1px solid var(--border-hairline);
  border-radius: 3px;
  background-color: var(--bg-surface);
  font-size: 0.875rem;
  font-weight: 500;
}

.drawer-lang-btn[aria-current="page"] {
  border-color: var(--accent-gold);
  background-color: var(--accent-gold);
  color: #16050a;
  font-weight: 600;
}

.drawer-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* ==========================================================================
   Hero — Monumental $5,300,000 Counter (Immediately Visible, Zero Veil)
   ========================================================================== */
.hero {
  padding-top: clamp(2.5rem, 5.5vw, 4.75rem);
  padding-bottom: clamp(3.5rem, 6.5vw, 5.5rem);
  border-bottom: 1px solid var(--border-hairline);
}

.hero-eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: clamp(0.7rem, 2vw, 0.78rem);
  letter-spacing: 0.06em;
  color: var(--accent-gold);
  margin-bottom: 2rem;
}

.hero-eyebrow .sep {
  color: var(--text-muted);
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4.5vw, 4rem);
  align-items: stretch;
}

@media (min-width: 980px) {
  .hero-split {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }
}

.hero-primary {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.valuation-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.65rem;
}

.counter-stage {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.65rem 1.35rem;
  margin-bottom: 1.15rem;
}

.valuation-figure {
  font-family: var(--font-display);
  font-size: clamp(3.15rem, 8.6vw, 6.65rem);
  line-height: 0.94;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  font-variant-numeric: lining-nums tabular-nums;
}

.valuation-figure.is-counting {
  color: var(--accent-gold-bright);
  transition: color 350ms ease;
}

.valuation-figure.is-settled {
  color: var(--text-primary);
  transition: color 600ms var(--ease-atelier);
}

.counter-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.currency-tag {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.06em;
  color: var(--accent-gold);
}

.replay-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 36px;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--accent-gold-dim);
  border-radius: 3px;
  background-color: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-gold);
  white-space: nowrap;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.replay-btn:hover {
  background-color: var(--bg-surface-elevated);
  border-color: var(--accent-gold);
}

/* Synchronized Hero Composition Meter (animates 0% -> 100% with counter) */
.hero-meter-wrap {
  margin-bottom: 1.75rem;
}

.hero-meter-track {
  width: 100%;
  height: 8px;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-hairline);
  border-radius: 2px;
  overflow: hidden;
  padding: 1px;
}

.hero-meter-fill {
  display: flex;
  width: 100%;
  height: 100%;
  gap: 2px;
  transform: scaleX(0);
  transform-origin: left center;
}

.hero-meter-seg {
  height: 100%;
  border-radius: 1px;
}

.hero-meter-caption {
  margin-top: 0.6rem;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.hero-summary {
  max-width: 58ch;
  font-size: clamp(0.96875rem, 1.3vw, 1.05rem);
  line-height: 1.74;
  color: var(--text-secondary);
}

/* Sovereign Asset Balance Dossier (Right Column) */
.dossier-card {
  background: linear-gradient(165deg, #210912 0%, #16060b 100%);
  border: 1px solid var(--accent-gold-dim);
  border-radius: 4px;
  padding: 0.45rem;
  display: flex;
}

.dossier-inner {
  width: 100%;
  border: 1px solid var(--border-hairline);
  padding: clamp(1.35rem, 2.8vw, 2rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
}

.dossier-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border-hairline);
}

.dossier-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--accent-gold);
}

.dossier-date {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
}

.dossier-rows {
  display: grid;
  gap: 0.85rem;
}

.dossier-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(246, 239, 233, 0.08);
}

.dossier-swatch {
  width: 8px;
  height: 8px;
  border-radius: 1px;
  transform: translateY(-1px);
}

.dossier-row dt {
  font-size: 0.84375rem;
  color: var(--text-secondary);
}

.dossier-row dd {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.dossier-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: 0.35rem;
}

.dossier-total-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-gold);
}

.dossier-total-val {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--accent-gold-bright);
  font-variant-numeric: lining-nums tabular-nums;
}

/* ==========================================================================
   Section Rhythm
   ========================================================================== */
.section {
  padding-block: clamp(3.75rem, 7.5vw, 6.5rem);
  border-bottom: 1px solid var(--border-hairline);
}

.section-header {
  max-width: 50rem;
  margin-bottom: clamp(2.25rem, 4.5vw, 3.25rem);
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--accent-gold);
  margin-bottom: 0.65rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.6vw, 2.85rem);
  line-height: 1.12;
  font-weight: 500;
  color: var(--text-primary);
  text-wrap: balance;
  margin-bottom: 0.9rem;
}

.section-intro {
  font-size: clamp(0.96875rem, 1.3vw, 1.05rem);
  color: var(--text-secondary);
  line-height: 1.72;
  max-width: 58ch;
}

/* ==========================================================================
   Section 01 — Interactive Master-Detail Asset Explorer
   ========================================================================== */
.allocation-shell {
  margin-bottom: 2.25rem;
}

.allocation-bar {
  display: flex;
  width: 100%;
  height: 16px;
  gap: 3px;
  margin-bottom: 0.9rem;
}

.alloc-seg {
  height: 100%;
  border-radius: 2px;
  transition: opacity 200ms ease, transform 220ms var(--ease-atelier);
}

.alloc-seg[data-seg="0"] { background-color: var(--seg-1); }
.alloc-seg[data-seg="1"] { background-color: var(--seg-2); }
.alloc-seg[data-seg="2"] { background-color: var(--seg-3); }
.alloc-seg[data-seg="3"] { background-color: var(--seg-4); }
.alloc-seg[data-seg="4"] { background-color: var(--seg-5); }

.alloc-seg:not(.is-active) {
  opacity: 0.48;
}

.alloc-seg.is-active {
  opacity: 1;
  transform: scaleY(1.22);
}

.explorer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  align-items: start;
}

@media (min-width: 960px) {
  .explorer-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 2.25rem;
  }
}

.pillar-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border-hairline);
}

.pillar-btn {
  width: 100%;
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 0.65rem 1.15rem;
  padding: 1.35rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-hairline);
  background-color: transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.pillar-btn:hover {
  background-color: var(--bg-surface);
}

.pillar-btn[aria-selected="true"] {
  background-color: var(--bg-surface-elevated);
  border-bottom-color: var(--accent-gold-dim);
}

.pillar-idx {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-gold);
}

.pillar-name {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.9vw, 1.32rem);
  font-weight: 500;
  line-height: 1.25;
  color: var(--text-primary);
}

.pillar-amt {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.pillar-pct {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-gold);
  min-width: 3.1rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Right Detail Folio Card */
.inspector-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--accent-gold-dim);
  border-radius: 4px;
  padding: clamp(1.5rem, 3.2vw, 2.5rem);
  display: grid;
  gap: 1.35rem;
}

@media (min-width: 960px) {
  .inspector-card {
    position: sticky;
    top: 6rem;
  }
}

.inspector-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-hairline);
}

.inspector-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-gold);
  letter-spacing: 0.05em;
}

.inspector-share {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.inspector-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.85rem);
  line-height: 1.05;
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: lining-nums tabular-nums;
}

.inspector-title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.2vw, 1.65rem);
  line-height: 1.22;
  font-weight: 500;
  color: var(--accent-gold-bright);
}

.inspector-desc {
  font-size: 0.96875rem;
  line-height: 1.72;
  color: var(--text-secondary);
}

.inspector-specs {
  display: grid;
  gap: 0.7rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-hairline);
}

.inspector-spec-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.84375rem;
}

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

.inspector-spec-row dd {
  font-family: var(--font-mono);
  color: var(--text-primary);
  text-align: right;
}

/* ==========================================================================
   Section 02 — 26 UK IPO Patent Specimen Grid
   ========================================================================== */
.registry-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.filter-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding: 0.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 3px;
}

.filter-tab {
  padding: 0.5rem 0.95rem;
  min-height: 40px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 2px;
  white-space: nowrap;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.filter-tab:hover {
  color: var(--text-primary);
}

.filter-tab[aria-pressed="true"] {
  background-color: var(--accent-gold);
  color: #16050a;
  font-weight: 600;
}

.registry-count {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.patent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  border-top: 1px solid var(--border-hairline);
  border-left: 1px solid var(--border-hairline);
}

.patent-cell {
  padding: 1.05rem 1.15rem;
  border-right: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  transition: background-color var(--transition-fast);
}

.patent-cell:hover {
  background-color: var(--bg-surface-elevated);
}

.patent-cell[hidden] {
  display: none;
}

.patent-id {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.patent-status {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.patent-cell[data-type="licensed"] .patent-id {
  color: var(--accent-gold);
}

/* ==========================================================================
   Section 03 — Methodology & Accordion FAQ
   ========================================================================== */
.method-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

@media (min-width: 920px) {
  .method-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }
}

.method-prose {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.76;
}

.method-prose strong {
  color: var(--text-primary);
}

.faq-list {
  border-top: 1px solid var(--border-hairline);
}

.faq-item {
  border-bottom: 1px solid var(--border-hairline);
}

.faq-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.25rem 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1.22rem;
  line-height: 1.3;
  font-weight: 500;
  color: var(--text-primary);
}

.faq-icon {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent-gold);
  flex-shrink: 0;
  transition: transform 240ms var(--ease-atelier);
}

.faq-item[data-open="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 300ms var(--ease-atelier);
}

.faq-item[data-open="true"] .faq-panel {
  grid-template-rows: 1fr;
}

.faq-answer {
  overflow: hidden;
}

.faq-answer p {
  padding-bottom: 1.35rem;
  font-size: 0.9375rem;
  line-height: 1.68;
  color: var(--text-secondary);
}

/* ==========================================================================
   Redesigned Colophon Footer (4-Cell Architectural Strip)
   ========================================================================== */
.site-footer {
  background-color: #0d0306;
  padding-top: clamp(3.5rem, 6.5vw, 5rem);
  padding-bottom: clamp(2rem, 4vw, 3rem);
}

.footer-monument {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.75rem 2.5rem;
  padding-bottom: 2.25rem;
  border-bottom: 1px solid var(--border-hairline);
}

.footer-identity {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-emblem {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--accent-gold-dim);
  padding: 3px;
  background-color: #090306;
  flex-shrink: 0;
}

.footer-title {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 600;
  color: var(--text-primary);
}

.footer-subtitle {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-gold);
}

.footer-ecosystem-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.5rem;
}

.footer-ecosystem-rail a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  white-space: nowrap;
  padding-block: 0.25rem;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.footer-ecosystem-rail a:hover {
  color: var(--accent-gold);
  border-bottom-color: var(--accent-gold);
}

.footer-ledger-strip {
  display: grid;
  grid-template-columns: 1fr;
  border-bottom: 1px solid var(--border-hairline);
}

@media (min-width: 720px) {
  .footer-ledger-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .footer-ledger-strip {
    grid-template-columns: repeat(4, 1fr);
  }
}

.footer-cell {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-hairline);
}

@media (min-width: 720px) {
  .footer-cell {
    padding: 1.75rem 1.5rem 1.75rem 0;
    border-bottom: none;
  }
}

.footer-cell-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--accent-gold);
  margin-bottom: 0.45rem;
}

.footer-cell-value {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--text-primary);
}

.footer-colophon {
  padding-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem 2rem;
}

.footer-disclaimer {
  max-width: 68ch;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.footer-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.back-top-btn {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding-inline: 0.85rem;
  border: 1px solid var(--border-hairline);
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.back-top-btn:hover {
  color: var(--accent-gold);
  border-color: var(--accent-gold-dim);
}