/* Rivi Goods Technical Archive — Master Stylesheet
 * Fonts: Arvo (Display), Cabin (Body), Lekton (Mono/Tabular)
 * Palette: Unbleached Cotton #F3EFE5 / #E6DFCE x Raw Indigo #1B2945 x Copper Rivet #B91C1C x Veg-Tan Amber #9A5B13
 */

@font-face {
  font-family: 'Arvo';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/arvo-400-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Arvo';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/arvo-400-italic.woff2') format('woff2');
}

@font-face {
  font-family: 'Arvo';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/fonts/arvo-700-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Cabin';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/cabin-400-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Cabin';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/fonts/cabin-500-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Cabin';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/fonts/cabin-600-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Cabin';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/fonts/cabin-700-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Lekton';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/lekton-400-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Lekton';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/lekton-400-italic.woff2') format('woff2');
}

@font-face {
  font-family: 'Lekton';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/fonts/lekton-700-normal.woff2') format('woff2');
}

:root {
  --bg-canvas: #F3EFE5;
  --bg-surface: #E6DFCE;
  --bg-elevated: #FAF7F0;
  --ink-primary: #1B2945;
  --ink-secondary: #2F3E5C;
  --ink-muted: #505D75;
  --signal-copper: #B91C1C;
  --signal-copper-soft: #FDE8E8;
  --signal-amber: #9A5B13;
  --signal-amber-soft: #FEF3C7;
  --rule-strong: #1B2945;
  --rule-hair: #C8BCA4;

  --font-display: 'Arvo', Georgia, serif;
  --font-body: 'Cabin', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Lekton', 'Courier New', monospace;

  --editorial-width: 76rem;
  --content-width: 49rem;
  --rail-width: 18.5rem;
  --grid-gap: 3.5rem;
  --container-pad: 1.5rem;
}

@media (min-width: 768px) {
  :root {
    --container-pad: 2.25rem;
  }
}

@media (min-width: 1280px) {
  :root {
    --container-pad: 3rem;
  }
}

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

html {
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--ink-primary);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--signal-copper);
}

:focus-visible {
  outline: 2px solid var(--signal-copper);
  outline-offset: 2px;
}

.rv-skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink-primary);
  color: var(--bg-elevated);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-weight: 700;
  z-index: 100;
}

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

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

/* Header & Two-Tier Navigation */
.rv-header {
  background-color: var(--bg-canvas);
  border-bottom: 2px solid var(--rule-strong);
}

.rv-topbar {
  width: 100%;
  max-width: var(--editorial-width);
  margin-inline: auto;
  padding: 0.9rem var(--container-pad);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--rule-hair);
}

.rv-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink-primary);
}

.rv-brand-mark {
  display: inline-block;
  width: 0.85rem;
  height: 0.85rem;
  background: var(--bg-elevated);
  border: 2px solid var(--ink-primary);
  border-right: 3px solid var(--signal-copper);
}

.rv-brand-sub {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-muted);
  font-weight: 400;
}

.rv-nav-primary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
}

.rv-nav-link {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--ink-secondary);
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.rv-nav-link:hover,
.rv-nav-link.is-active {
  color: var(--signal-copper);
  border-bottom-color: var(--signal-copper);
}

.rv-desk-strip {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--rule-hair);
}

.rv-desk-strip-inner {
  width: 100%;
  max-width: var(--editorial-width);
  margin-inline: auto;
  padding: 0.55rem var(--container-pad);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.35rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.rv-desk-label {
  color: var(--signal-amber);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.rv-desk-link {
  color: var(--ink-primary);
  text-decoration: none;
}

.rv-desk-link:hover {
  color: var(--signal-copper);
  text-decoration: underline;
}

/* Blueprint Loom Work-Order Hero */
.rv-hero {
  padding-block: 2.5rem 2.75rem;
  border-bottom: 1px solid var(--rule-hair);
  background-image:
    linear-gradient(to right, rgba(27, 41, 69, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 41, 69, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
}

.rv-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 960px) {
  .rv-hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.75rem;
  }
}

.rv-kicker {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--signal-amber);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.65rem;
}

.rv-h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.6vw, 2.95rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.025em;
  text-wrap: balance;
  margin: 0 0 1rem;
  color: var(--ink-primary);
}

.rv-dek {
  font-size: 1.125rem;
  line-height: 1.62;
  color: var(--ink-secondary);
  max-width: 44rem;
  margin: 0 0 1.5rem;
}

.rv-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 1.75rem;
}

.rv-btn-primary {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  background-color: var(--signal-copper);
  color: var(--bg-elevated);
  border: 1.5px solid var(--signal-copper);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.1s ease;
}

.rv-btn-primary:hover {
  background-color: var(--ink-primary);
  border-color: var(--ink-primary);
  color: var(--bg-elevated);
}

.rv-btn-primary:active {
  transform: translateY(1px);
}

.rv-btn-secondary {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.65rem 1.2rem;
  background-color: var(--bg-elevated);
  color: var(--ink-primary);
  border: 1.5px solid var(--ink-primary);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.rv-btn-secondary:hover {
  background-color: var(--bg-surface);
  color: var(--signal-copper);
  border-color: var(--signal-copper);
}

/* Loom Work-Order Specification Ticket */
.rv-loom-ticket {
  background-color: var(--bg-elevated);
  border-top: 3px solid var(--ink-primary);
  border-bottom: 2px solid var(--ink-primary);
  border-left: 4px solid var(--signal-copper);
  padding: 1rem 1.2rem;
}

.rv-ticket-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 0.55rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule-hair);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-primary);
}

.rv-ticket-code {
  color: var(--signal-copper);
  font-variant-numeric: tabular-nums;
}

.rv-ticket-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem 1rem;
}

@media (max-width: 640px) {
  .rv-ticket-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.rv-ticket-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}

.rv-ticket-val {
  display: block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ink-primary);
}

.rv-plate-frame {
  background-color: var(--bg-elevated);
  border: 1px solid var(--ink-primary);
  padding: 0.55rem;
}

.rv-plate-caption {
  padding: 0.65rem 0.25rem 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--ink-secondary);
  border-top: 1px solid var(--rule-hair);
  margin-top: 0.55rem;
}

/* Band Sections */
.rv-band {
  padding-block: 2.75rem;
  border-bottom: 1px solid var(--rule-hair);
}

.rv-band-ledger {
  background-color: var(--bg-surface);
}

.rv-section-title {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.4vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.22;
  margin: 0 0 0.65rem;
  color: var(--ink-primary);
}

.rv-section-lead {
  font-size: 1.05rem;
  color: var(--ink-secondary);
  max-width: var(--content-width);
  margin: 0 0 1.5rem;
}

/* Guide Spec Grid & Sticky Rail */
.rv-masthead-sub {
  padding-block: 2rem 1.75rem;
  border-bottom: 2px solid var(--rule-strong);
  background-color: var(--bg-surface);
}

.rv-breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--ink-muted);
  margin: 0 0 0.6rem;
}

.rv-breadcrumb a {
  color: var(--ink-secondary);
  text-decoration: none;
}

.rv-breadcrumb a:hover {
  color: var(--signal-copper);
  text-decoration: underline;
}

.rv-byline {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
  margin: 0.75rem 0 0;
}

.rv-spec-grid {
  width: 100%;
  max-width: var(--editorial-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--rail-width);
  gap: var(--grid-gap);
  margin-top: 2.25rem;
  margin-bottom: 3.5rem;
  align-items: start;
}

@media (max-width: 1024px) {
  .rv-spec-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }
}

.rv-prose {
  min-width: 0;
  max-width: var(--content-width);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink-primary);
}

.rv-prose h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 2.25rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule-hair);
}

.rv-prose h3 {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 700;
  margin: 1.5rem 0 0.5rem;
  color: var(--ink-primary);
}

.rv-prose p {
  margin: 0 0 1.15rem;
}

.rv-prose ul, .rv-prose ol {
  margin: 0 0 1.25rem;
  padding-left: 1.35rem;
}

.rv-prose li {
  margin-bottom: 0.45rem;
}

.rv-rail {
  position: sticky;
  top: 1.5rem;
  border-top: 2px solid var(--ink-primary);
  padding-top: 1rem;
  font-size: 0.9375rem;
}

@media (max-width: 1024px) {
  .rv-rail {
    position: static;
  }
}

.rv-rail-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--signal-amber);
  margin: 0 0 0.65rem;
}

.rv-rail-list {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
}

.rv-rail-list li {
  border-bottom: 1px solid var(--rule-hair);
}

.rv-rail-list a {
  display: block;
  padding: 0.5rem 0;
  text-decoration: none;
  color: var(--ink-secondary);
  font-weight: 500;
}

.rv-rail-list a:hover {
  color: var(--signal-copper);
}

.rv-rail-cta {
  display: block;
  padding: 0.85rem 1rem;
  background-color: var(--bg-elevated);
  border: 1.5px solid var(--ink-primary);
  border-left: 4px solid var(--signal-copper);
  text-decoration: none;
  margin-bottom: 1.5rem;
}

.rv-rail-cta-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--signal-copper);
}

.rv-rail-cta-text {
  display: block;
  font-weight: 700;
  color: var(--ink-primary);
  margin-top: 0.2rem;
}

/* GEO Link-Free Answer Capsule */
.rv-answer-capsule {
  background-color: var(--bg-elevated);
  border-left: 4px solid var(--signal-copper);
  border-top: 1px solid var(--rule-hair);
  border-right: 1px solid var(--rule-hair);
  border-bottom: 1px solid var(--rule-hair);
  padding: 1.15rem 1.35rem;
  margin-bottom: 1.75rem;
}

.rv-capsule-label {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--signal-copper);
  margin-bottom: 0.45rem;
}

.answer-box {
  font-size: 1.03rem;
  line-height: 1.62;
  color: var(--ink-primary);
  margin: 0;
}

/* Booktabs Three-Line Tables & Defensive CSS */
.table-responsive-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0;
}

table.rv-booktabs {
  width: 100%;
  border-collapse: collapse;
  border-top: 2px solid var(--rule-strong);
  border-bottom: 2px solid var(--rule-strong);
  font-size: 0.9375rem;
  line-height: 1.48;
  font-variant-numeric: tabular-nums;
  background-color: var(--bg-elevated);
}

table.rv-booktabs thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-primary);
  background-color: var(--bg-surface);
  border-bottom: 1.5px solid var(--rule-strong);
  padding: 0.7rem 0.85rem;
}

table.rv-booktabs tbody td {
  padding: 0.72rem 0.85rem;
  border-bottom: 1px solid var(--rule-hair);
  vertical-align: top;
  color: var(--ink-secondary);
}

table.rv-booktabs tbody tr:last-child td {
  border-bottom: none;
}

:is(.rv-badge, .rv-badge-copper, .rv-badge-amber):not(td):not(th) {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid var(--ink-primary);
  color: var(--ink-primary);
  background-color: var(--bg-canvas);
  white-space: nowrap;
}

:is(.rv-badge-copper):not(td):not(th) {
  border-color: var(--signal-copper);
  color: var(--signal-copper);
  background-color: var(--signal-copper-soft);
}

:is(.rv-badge-amber):not(td):not(th) {
  border-color: var(--signal-amber);
  color: var(--signal-amber);
  background-color: var(--signal-amber-soft);
}

/* Interactive Raw Denim Soak Shrinkage & Oz/yd2 Calculator */
.rv-calc-shell {
  background-color: var(--bg-elevated);
  border-top: 3px solid var(--ink-primary);
  border-bottom: 2px solid var(--ink-primary);
  border-left: 1px solid var(--rule-hair);
  border-right: 1px solid var(--rule-hair);
  padding: 1.5rem;
  margin-block: 1.5rem;
}

.rv-calc-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.75rem 1.5rem;
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--rule-hair);
}

.rv-calc-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0;
  color: var(--ink-primary);
}

.rv-calc-reset {
  min-height: 44px;
  padding: 0.45rem 0.95rem;
  background: var(--bg-surface);
  color: var(--ink-primary);
  border: 1.5px solid var(--ink-primary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
}

.rv-calc-reset:hover {
  border-color: var(--signal-copper);
  color: var(--signal-copper);
}

.rv-calc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

@media (max-width: 900px) {
  .rv-calc-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.5rem;
  }
}

.rv-control-block {
  margin-bottom: 1.25rem;
}

.rv-control-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--ink-primary);
  margin-bottom: 0.5rem;
}

.rv-choice-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.rv-choice-btn {
  min-height: 44px;
  padding: 0.5rem 0.9rem;
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  border: 1.5px solid var(--rule-hair);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.12s ease, border-color 0.12s ease;
}

.rv-choice-btn:hover {
  border-color: var(--ink-primary);
}

.rv-choice-btn.is-active {
  background-color: var(--ink-primary);
  color: var(--bg-elevated);
  border-color: var(--ink-primary);
}

.rv-stepper-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

@media (max-width: 540px) {
  .rv-stepper-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.rv-stepper-row {
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--ink-primary);
  background-color: var(--bg-canvas);
}

.rv-step-btn {
  min-width: 44px;
  min-height: 44px;
  background-color: var(--bg-surface);
  color: var(--ink-primary);
  border: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  cursor: pointer;
}

.rv-step-btn:hover {
  background-color: var(--ink-primary);
  color: var(--bg-elevated);
}

.rv-num-input {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  border: none;
  border-left: 1px solid var(--rule-hair);
  border-right: 1px solid var(--rule-hair);
  background-color: var(--bg-elevated);
  color: var(--ink-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: center;
  padding: 0.35rem 0.25rem;
}

/* Verdict Panel */
.rv-verdict-card {
  background-color: var(--bg-canvas);
  border: 1px solid var(--rule-hair);
  padding: 1.25rem;
}

.rv-verdict-tier {
  border-left: 5px solid var(--ink-primary);
  background-color: var(--bg-elevated);
  padding: 0.9rem 1rem;
  margin-bottom: 1.15rem;
}

.rv-verdict-tier.is-critical {
  border-left-color: var(--signal-copper);
}

.rv-verdict-tier.is-urgent {
  border-left-color: var(--signal-amber);
}

.rv-verdict-tier.is-safe {
  border-left-color: var(--ink-primary);
}

.rv-verdict-status {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--signal-copper);
  margin-bottom: 0.25rem;
}

.rv-verdict-tier.is-urgent .rv-verdict-status {
  color: var(--signal-amber);
}

.rv-verdict-tier.is-safe .rv-verdict-status {
  color: var(--ink-primary);
}

.rv-verdict-summary {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.5;
  color: var(--ink-primary);
}

.rv-readout-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.rv-readout-cell {
  background-color: var(--bg-elevated);
  border-bottom: 1.5px solid var(--ink-primary);
  padding: 0.65rem 0.75rem;
}

.rv-readout-k {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.rv-readout-v {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--ink-primary);
}

.rv-calc-note {
  font-size: 0.875rem;
  color: var(--ink-secondary);
  margin: 0;
}

/* Vector SVG Diagrams (No inline style, CSS-token driven) */
.rv-diagram-figure {
  margin: 1.75rem 0;
  background-color: var(--bg-elevated);
  border: 1px solid var(--ink-primary);
  padding: 1rem;
}

.rv-diagram {
  width: 100%;
  height: auto;
  display: block;
}

.rv-svg-bg {
  fill: #FAF7F0;
}

.rv-svg-panel {
  fill: #F3EFE5;
  stroke: #1B2945;
  stroke-width: 1.5;
}

.rv-svg-warp {
  fill: #1B2945;
}

.rv-svg-weft {
  fill: #E6DFCE;
  stroke: #1B2945;
  stroke-width: 1.25;
}

.rv-svg-selvedge {
  fill: #B91C1C;
}

.rv-svg-amber {
  fill: #9A5B13;
}

.rv-svg-line {
  stroke: #1B2945;
  stroke-width: 1.5;
  fill: none;
}

.rv-svg-line-copper {
  stroke: #B91C1C;
  stroke-width: 2.25;
  fill: none;
}

.rv-svg-title {
  font-family: 'Arvo', Georgia, serif;
  font-size: 15px;
  font-weight: 700;
  fill: #1B2945;
}

.rv-svg-label {
  font-family: 'Lekton', monospace;
  font-size: 12px;
  font-weight: 700;
  fill: #1B2945;
}

.rv-svg-muted {
  font-family: 'Lekton', monospace;
  font-size: 11px;
  fill: #505D75;
}

.rv-diagram-caption {
  margin: 0.75rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-secondary);
}

/* Editorial Two-Column Index & Media Figures */
.rv-index-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 2.25rem;
}

@media (max-width: 768px) {
  .rv-index-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

.rv-dossier-entry {
  border-top: 2px solid var(--ink-primary);
  padding-top: 1rem;
}

.rv-dossier-meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--signal-amber);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.rv-dossier-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 0.45rem;
  line-height: 1.28;
}

.rv-dossier-title a {
  text-decoration: none;
}

.rv-dossier-title a:hover {
  text-decoration: underline;
}

.rv-figure-inline {
  margin: 1.75rem 0;
  border: 1px solid var(--ink-primary);
  background-color: var(--bg-elevated);
  padding: 0.55rem;
}

/* Historical Archive Ledger & Silent Disclosure */
.rv-archive-ledger {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--ink-primary);
}

.rv-archive-card {
  background-color: var(--bg-elevated);
  border-left: 4px solid var(--signal-amber);
  border-top: 1px solid var(--rule-hair);
  border-right: 1px solid var(--rule-hair);
  border-bottom: 1px solid var(--rule-hair);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.rv-archive-path {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--signal-amber);
  margin-bottom: 0.35rem;
}

.ref-disclosure {
  background-color: var(--bg-surface);
  border: 1px solid var(--rule-hair);
  padding: 0.85rem 1.1rem;
  margin-top: 1.25rem;
}

.ref-disclosure summary {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink-primary);
  cursor: pointer;
}

.ref-disclosure p {
  margin: 0.75rem 0 0;
  font-size: 0.9375rem;
}

/* FAQ List */
.rv-faq-list {
  margin-top: 1.5rem;
}

.rv-faq-item {
  border-top: 1px solid var(--rule-hair);
  padding-block: 1rem;
}

.rv-faq-item:last-child {
  border-bottom: 1px solid var(--rule-hair);
}

.rv-faq-q {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--ink-primary);
}

.faq-a {
  margin: 0;
  color: var(--ink-secondary);
}

.faq-src {
  margin: 0.45rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-muted);
}

/* Clean 3-Column Universal Footer (Zero Telemetry Noise) */
.rv-footer {
  background-color: var(--ink-primary);
  color: var(--bg-canvas);
  padding-block: 2.5rem 2rem;
}

.rv-footer a {
  color: var(--bg-canvas);
}

.rv-footer a:hover {
  color: var(--bg-surface);
}

.rv-footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid rgba(243, 239, 229, 0.25);
}

@media (max-width: 768px) {
  .rv-footer-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.5rem;
  }
}

.rv-footer-heading {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.65rem;
}

.rv-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.rv-footer-links li {
  margin-bottom: 0.4rem;
}

.rv-footer-bottom {
  padding-top: 1.15rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  font-size: 0.875rem;
  color: var(--bg-surface);
}

/* 404 Rescue Container */
.rv-not-found {
  padding-block: 3.5rem;
  max-width: var(--content-width);
}

/* Reduced Motion & Print */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

@media print {
  .rv-header, .rv-desk-strip, .rv-footer, .rv-rail, .rv-hero-actions, .rv-calc-reset {
    display: none;
  }
  body {
    background: #FFFFFF;
    color: #000000;
  }
  .rv-spec-grid {
    display: block;
    margin: 0;
    padding: 0;
  }
}