:root {
  /* Vintage / Retro Colour Palette */
  --color-bg: #f5eedb; /* Warm vintage parchment paper */
  --color-surface: #fffdfa; /* Aged cardstock surface */
  --color-surface-subtle: #eae0c8; /* Vintage Manila ledger folder */
  --color-surface-warm: #f0e6ce; /* Warm antique book paper */
  --color-surface-tint: #fcf9f2;

  --color-ink: #231c16; /* Deep printer's typewriter charcoal ink */
  --color-ink-muted: #574b3f; /* Vintage sepia brown */
  --color-ink-faint: #8a7b6c; /* Faded archival notation tone */
  
  --color-border: #cfc1a5; /* Aged page border */
  --color-border-dark: #231c16; /* Sharp retro linework border */
  --color-border-dash: #9a8a78; /* Perforated docket dashed tone */

  --color-retro-rust: #b64326; /* Retro terracotta / cinnabar stamp ink */
  --color-retro-rust-hover: #9c3319;
  --color-retro-mustard: #cf8a28; /* 1960s-70s warm ochre / vintage mustard */
  --color-retro-mustard-light: #ecd5a0;
  --color-retro-teal: #1f4e5b; /* Retro petroleum teal / ledger cloth */
  --color-retro-olive: #2e4938; /* British library dark green */
  --color-retro-cream: #faf5e8;

  --color-navy: #192a34; /* Deep retro petroleum slate */
  --color-racing-green: #244131;
  --color-burgundy: #b64326;
  --color-gold: #cf8a28;
  --color-gold-soft: #e2a84a;
  --color-focus: #b64326;
  --color-card-frame: #dfd2b5;

  /* Typography */
  --font-serif: "Baskerville", "Baskerville Old Face", "Bookman Old Style", "Georgia", "Garamond", serif;
  --font-sans: "Courier New", Courier, ui-monospace, Menlo, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Courier New", Courier, ui-monospace, "Cascadia Code", monospace;

  /* Spacers */
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;
  --space-64: 64px;

  /* Geometry & 3D Tactile Hard Shadows */
  --radius-none: 0px;
  --retro-3d-btn: 2px 2px 0 var(--color-border-dark);
  --retro-3d-btn-hover: 3px 3px 0 var(--color-border-dark);
  --retro-3d-card: 0 6px 0 var(--color-border-dark), 0 12px 24px rgba(35, 28, 22, 0.12);
  --retro-3d-card-hover: 0 10px 0 var(--color-retro-rust), 0 18px 30px rgba(182, 67, 38, 0.22);
  --retro-shadow-sm: 2px 2px 0 var(--color-border-dark);
  --retro-shadow-md: 4px 4px 0 var(--color-border-dark);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg);
  color: var(--color-ink);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-serif);
  line-height: 1.65;
  background-color: var(--color-bg);
  background-image: radial-gradient(#d8ccb3 0.75px, transparent 0.75px);
  background-size: 18px 18px;
  color: var(--color-ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--color-ink);
  line-height: 1.25;
  font-weight: 700;
  overflow-wrap: anywhere;
}

h1 {
  font-size: clamp(2.1rem, 4.2vw + 0.8rem, 3.35rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.6rem, 2.5vw + 0.5rem, 2.3rem);
  letter-spacing: -0.015em;
  margin-bottom: var(--space-16);
}

h3 {
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-8);
}

p, li, blockquote {
  font-size: 1.05rem;
  color: var(--color-ink);
  overflow-wrap: anywhere;
}

p + p {
  margin-top: var(--space-16);
}

a {
  color: var(--color-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
  overflow-wrap: anywhere;
}

a:hover {
  color: var(--color-retro-rust);
  text-decoration-color: var(--color-retro-rust);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-retro-rust);
  outline-offset: 2px;
}

/* =========================================================
   NATURAL SCROLLING SITE HEADER
   ========================================================= */
.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-border-dark);
  box-shadow: 0 2px 8px rgba(35, 28, 22, 0.08);
}

.site-header::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-retro-rust);
  pointer-events: none;
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  min-height: 50px;
  padding: 6px var(--space-24);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
}

.brand-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--color-ink);
  flex-shrink: 0;
}

.brand-mark {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border: 1.5px solid var(--color-border-dark);
  display: grid;
  place-items: center;
  background-color: var(--color-retro-mustard);
  box-shadow: 1.5px 1.5px 0 var(--color-border-dark);
}

.brand-text-stack {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-ink);
  line-height: 1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-muted);
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.74rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--color-ink);
  letter-spacing: 0.04em;
  padding: 4px 7px;
  position: relative;
  text-transform: uppercase;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: all 0.12s ease;
}

.nav-link:hover {
  color: var(--color-retro-rust);
  background-color: var(--color-surface-warm);
  border-color: var(--color-border);
}

.nav-link.is-active {
  color: var(--color-retro-rust);
  background-color: var(--color-surface-warm);
  border-color: var(--color-border-dark);
  box-shadow: 1px 1px 0 var(--color-border-dark);
}

.nav-actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* =========================================================
   COMPACT, TACTILE & REFINED BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--radius-none);
  border: 1.5px solid var(--color-border-dark);
  box-shadow: var(--retro-3d-btn);
  position: relative;
  transition: transform 0.1s ease, box-shadow 0.1s ease, background-color 0.12s ease;
  transform: translate(0, 0);
  line-height: 1.2;
  white-space: nowrap;
}

.btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--retro-3d-btn-hover);
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: 0 0 0 var(--color-border-dark);
}

/* Small, Sharp & Better Text Button Variant */
.btn-slim {
  padding: 3px 9px;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  line-height: 1.25;
  border-width: 1.25px;
  box-shadow: 1.5px 1.5px 0 var(--color-border-dark);
}

.btn-slim:hover {
  transform: translate(-1px, -1px);
  box-shadow: 2.5px 2.5px 0 var(--color-border-dark);
}

.btn-slim:active {
  transform: translate(1px, 1px);
  box-shadow: 0.5px 0.5px 0 var(--color-border-dark);
}

.btn-primary {
  background-color: var(--color-retro-rust);
  color: #ffffff;
  border-color: var(--color-border-dark);
}

.btn-primary:hover {
  background-color: var(--color-retro-rust-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--color-surface-subtle);
  color: var(--color-ink);
  border-color: var(--color-border-dark);
}

.btn-secondary:hover {
  background-color: var(--color-retro-mustard-light);
  color: var(--color-ink);
}

/* Polished Catalogue Menu Toggle */
.menu-toggle {
  display: none;
  align-items: center;
  gap: 6px;
  background: var(--color-surface-warm);
  border: 1.25px solid var(--color-border-dark);
  box-shadow: 1.5px 1.5px 0 var(--color-border-dark);
  padding: 3px 8px;
  color: var(--color-ink);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  line-height: 1.2;
  transition: transform 0.1s ease, background-color 0.12s ease, box-shadow 0.1s ease;
}

.menu-toggle::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 8px;
  background: repeating-linear-gradient(
    to bottom,
    var(--color-ink),
    var(--color-ink) 1.5px,
    transparent 1.5px,
    transparent 3.5px
  );
  vertical-align: middle;
}

.menu-toggle:hover {
  background: var(--color-surface-subtle);
  transform: translate(-1px, -1px);
  box-shadow: 2.5px 2.5px 0 var(--color-border-dark);
}

.menu-toggle:active {
  transform: translate(1px, 1px);
  box-shadow: 0.5px 0.5px 0 var(--color-border-dark);
}

.main-content {
  flex: 1 0 auto;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--space-24);
  width: 100%;
}

.section-padding {
  padding-top: var(--space-64);
  padding-bottom: var(--space-64);
}

/* =========================================================
   EDITORIAL HERO & 3D MONOGRAPH ARTIFACT
   ========================================================= */
.editorial-hero {
  border-bottom: 2px solid var(--color-border-dark);
  padding: var(--space-48) 0;
  background-color: var(--color-surface);
  position: relative;
  overflow: hidden;
}

.editorial-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 23px,
    rgba(207, 193, 165, 0.4) 23px,
    rgba(207, 193, 165, 0.4) 24px
  );
  pointer-events: none;
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-40);
  align-items: center;
}

.retro-kicker-bar {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
  flex-wrap: wrap;
}

.retro-stamp-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background-color: var(--color-retro-rust);
  color: #ffffff;
  padding: 3px 8px;
  border: 1px solid var(--color-border-dark);
  box-shadow: 2px 2px 0 var(--color-border-dark);
  text-transform: uppercase;
  transform: perspective(400px) rotateX(2deg);
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  font-weight: 700;
}

.hero-heading {
  margin-bottom: var(--space-20);
  text-shadow: 1px 1px 0 rgba(255, 255, 255, 0.8);
}

.hero-lead {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  line-height: 1.65;
  color: var(--color-ink-muted);
  margin-bottom: var(--space-24);
}

.hero-cta-group {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.hero-cta-group .btn {
  padding: 7px 16px;
  font-size: 0.8rem;
}

/* 3D Visual Artifacts Column */
.hero-visual-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
}

/* --- 3D INTERACTIVE MONOGRAPH FOLIO --- */
.book-3d-stage {
  perspective: 1200px;
  width: 100%;
  display: flex;
  justify-content: center;
  padding: var(--space-16) 0 var(--space-8);
}

.book-3d {
  width: 250px;
  height: 160px;
  position: relative;
  transform-style: preserve-3d;
  transform: rotateY(-22deg) rotateX(16deg) rotateZ(-2deg);
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
  cursor: pointer;
}

.book-3d-stage:hover .book-3d {
  transform: rotateY(-8deg) rotateX(6deg) rotateZ(0deg) translate3d(0, -6px, 15px);
}

/* Front Cover of 3D Book */
.book-cover-front {
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #244131 0%, #162a1f 100%);
  border: 2px solid #101c15;
  box-shadow: inset 2px 2px 0 #3a684f, inset -2px -2px 0 #0d1610;
  padding: 12px;
  transform: translateZ(16px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: #eeddbb;
  border-radius: 0 4px 4px 0;
}

.book-cover-frame {
  border: 1px solid rgba(207, 138, 40, 0.7);
  outline: 1px dashed rgba(207, 138, 40, 0.4);
  outline-offset: -3px;
  height: 100%;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.book-cover-vol {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-retro-mustard-light);
  text-transform: uppercase;
}

.book-cover-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.25;
  color: #fffaf0;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}

.book-cover-sub {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  color: #dfd2b5;
  text-transform: uppercase;
  border-top: 1px solid rgba(207, 138, 40, 0.4);
  padding-top: 4px;
}

/* 3D Pages Thickness */
.book-pages-side {
  position: absolute;
  top: 3px;
  right: -24px;
  width: 26px;
  height: 154px;
  background: repeating-linear-gradient(
    90deg,
    #fcf8ec,
    #fcf8ec 2px,
    #ece2c7 2px,
    #ece2c7 4px
  );
  transform: rotateY(90deg) translateZ(-12px);
  border: 1px solid #c4b699;
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.2);
}

.book-pages-top {
  position: absolute;
  top: -24px;
  left: 4px;
  width: 242px;
  height: 26px;
  background: repeating-linear-gradient(
    0deg,
    #fcf8ec,
    #fcf8ec 2px,
    #ede3c9 2px,
    #ede3c9 4px
  );
  transform: rotateX(90deg) translateZ(12px);
  border: 1px solid #c4b699;
}

.book-spine-3d {
  position: absolute;
  top: 0;
  left: -28px;
  width: 30px;
  height: 160px;
  background: linear-gradient(90deg, #101c15 0%, #244131 40%, #2e4938 75%, #182e21 100%);
  transform: rotateY(-90deg) translateZ(14px);
  border: 1.5px solid #0d1610;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.5);
}

.book-spine-text {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  color: var(--color-retro-mustard-light);
  transform: rotate(-90deg);
  white-space: nowrap;
  letter-spacing: 0.12em;
  font-weight: 700;
}

.book-shadow-3d {
  position: absolute;
  width: 270px;
  height: 140px;
  background: rgba(35, 28, 22, 0.35);
  transform: translateZ(-25px) translateY(35px) rotateX(90deg);
  filter: blur(14px);
  pointer-events: none;
}

/* Retro Index Filing Card in Hero */
.hero-stats-panel {
  border: 2px solid var(--color-border-dark);
  background-color: var(--color-surface-warm);
  padding: var(--space-20);
  box-shadow: var(--retro-3d-card);
  position: relative;
  transform: perspective(600px) rotateX(1deg);
}

.stats-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px dashed var(--color-border-dark);
  padding-bottom: var(--space-8);
  margin-bottom: var(--space-12);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-ink-muted);
}

.stats-card-tag {
  background-color: var(--color-retro-mustard);
  color: var(--color-ink);
  padding: 2px 6px;
  border: 1px solid var(--color-border-dark);
  box-shadow: 1.5px 1.5px 0 var(--color-border-dark);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-12);
}

.stat-item {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border-dark);
  padding: 10px;
  box-shadow: 2px 2px 0 var(--color-border-dark);
  position: relative;
  transition: transform 0.15s ease;
}

.stat-item:hover {
  transform: translate3d(-2px, -2px, 0);
  box-shadow: 4px 4px 0 var(--color-border-dark);
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-retro-rust);
  line-height: 1;
}

.stat-label {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.3;
}

.stats-panel-footer {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px dotted var(--color-border-dash);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-ink-faint);
  text-transform: uppercase;
}

/* Section Header - Retro Filing Drawer */
.section-header {
  border-bottom: 2px solid var(--color-border-dark);
  padding-bottom: var(--space-16);
  margin-bottom: var(--space-32);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--space-16);
  position: relative;
}

.section-label-retro {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-retro-rust);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.section-subtitle {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--color-ink-muted);
  font-size: 1.05rem;
}

.header-retro-meta {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.vintage-indicator {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border-dark);
  padding: 3px 8px;
  font-weight: 700;
  box-shadow: 2px 2px 0 var(--color-border-dark);
}

.ref-badge {
  background-color: var(--color-retro-teal);
  color: #ffffff;
  border: 1px solid var(--color-border-dark);
  padding: 3px 8px;
  font-weight: 700;
  box-shadow: 2px 2px 0 var(--color-border-dark);
}

/* =========================================================
   3D RETRO ROW CARDS SYSTEM
   ========================================================= */
.curated-row-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-20);
}

.retro-row-card {
  display: flex;
  flex-direction: row;
  background-color: var(--color-surface);
  border: 2px solid var(--color-border-dark);
  box-shadow: var(--retro-3d-card);
  position: relative;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  min-width: 0;
  transform: perspective(800px) translateZ(0);
}

.retro-row-card:hover {
  transform: perspective(800px) translate3d(-3px, -4px, 8px);
  box-shadow: var(--retro-3d-card-hover);
}

/* 3D Cylindrical Book Spine Tab */
.card-spine-tab {
  flex-shrink: 0;
  width: 86px;
  background: linear-gradient(90deg, #d8ccb3 0%, #f0e6ce 35%, #faf5e8 60%, #eae0c8 100%);
  border-right: 2px dashed var(--color-border-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-8);
  text-align: center;
  gap: 4px;
  box-shadow: inset -2px 0 5px rgba(0, 0, 0, 0.07);
}

.spine-shelf-label {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.spine-num {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-retro-rust);
  text-shadow: 1px 1px 0 #fff;
}

.spine-code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  background-color: var(--color-border-dark);
  color: var(--color-surface);
  padding: 2px 6px;
  text-transform: uppercase;
  margin-top: 4px;
  box-shadow: 1.5px 1.5px 0 rgba(0, 0, 0, 0.2);
}

.spine-dot {
  color: var(--color-border-dash);
  font-size: 0.85rem;
}

.spine-dept {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-retro-teal);
}

/* Main Content & Meta Layout in Row */
.retro-row-card .framed-card-content {
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: var(--space-20);
  padding: var(--space-20) var(--space-24);
  align-items: center;
  background-color: var(--color-surface);
  min-width: 0;
}

.card-main-info {
  min-width: 0;
}

.card-tag-row {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-retro-rust);
  background-color: var(--color-surface-warm);
  border: 1px solid var(--color-border);
  padding: 2px 8px;
  box-shadow: 1px 1px 0 var(--color-border-dark);
}

.card-date-stamp {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-ink-faint);
  letter-spacing: 0.05em;
}

.retro-row-card .card-title {
  font-size: 1.35rem;
  margin-bottom: 6px;
  line-height: 1.3;
}

.retro-row-card .card-title a {
  text-decoration: none;
  color: var(--color-ink);
  transition: color 0.15s ease;
}

.retro-row-card .card-title a:hover {
  color: var(--color-retro-rust);
  text-decoration: underline;
  text-decoration-thickness: 2px;
}

.retro-row-card .card-excerpt {
  font-size: 0.98rem;
  color: var(--color-ink-muted);
  line-height: 1.55;
  margin-bottom: 0;
}

/* Action and Bibliographic Column in Row */
.retro-row-card .card-meta-box {
  border-left: 2px dashed var(--color-border);
  padding-left: var(--space-20);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-12);
  height: 100%;
}

.card-author-stack {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.meta-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-ink-faint);
  font-weight: 700;
}

.retro-row-card .card-meta-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-retro-teal);
  line-height: 1.4;
}

.retro-row-card .card-action-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 12px;
  background-color: var(--color-surface-warm);
  border: 1.25px solid var(--color-border-dark);
  box-shadow: 1.5px 1.5px 0 var(--color-border-dark);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-ink);
  transition: transform 0.1s ease, box-shadow 0.1s ease, background-color 0.12s ease;
}

.retro-row-card .card-action-link:hover {
  background-color: var(--color-retro-rust);
  color: #ffffff;
  transform: translate(-1px, -1px);
  box-shadow: 2.5px 2.5px 0 var(--color-border-dark);
}

.link-arrow {
  margin-left: 6px;
  font-size: 0.95rem;
  line-height: 1;
}

/* Secondary Editorial Feature Section - Vintage Ledger */
.methodology-feature {
  background-color: var(--color-surface-warm);
  border-top: 2px solid var(--color-border-dark);
  border-bottom: 2px solid var(--color-border-dark);
}

.stamp-verified-box {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-retro-rust);
  border: 2px solid var(--color-retro-rust);
  padding: 4px 10px;
  transform: perspective(300px) rotateZ(-2deg) rotateX(4deg);
  box-shadow: 2px 2px 0 rgba(182, 67, 38, 0.25);
  display: inline-block;
}

.editorial-columns {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-24);
}

.editorial-col {
  background-color: var(--color-surface);
  border: 2px solid var(--color-border-dark);
  padding: var(--space-20);
  box-shadow: var(--retro-3d-card);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease;
}

.editorial-col:hover {
  transform: perspective(600px) translateY(-3px);
}

.column-number-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  background-color: var(--color-retro-mustard);
  color: var(--color-ink);
  padding: 3px 8px;
  border: 1px solid var(--color-border-dark);
  box-shadow: 1.5px 1.5px 0 var(--color-border-dark);
  width: fit-content;
  margin-bottom: var(--space-12);
}

.column-title {
  font-size: 1.2rem;
  margin-bottom: var(--space-12);
  border-bottom: 1.5px solid var(--color-border);
  padding-bottom: var(--space-8);
}

.column-text {
  font-size: 0.95rem;
  color: var(--color-ink-muted);
  line-height: 1.6;
}

/* Article & Topic Details Layout (Shelf Pages) */
.editorial-article-header {
  padding: var(--space-48) 0 var(--space-32);
  border-bottom: 2px solid var(--color-border-dark);
  background-color: var(--color-surface);
  position: relative;
}

.breadcrumb-nav {
  margin-bottom: var(--space-16);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  color: var(--color-ink-faint);
  text-transform: uppercase;
}

.breadcrumb-nav a {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 700;
}

.breadcrumb-nav a:hover {
  color: var(--color-retro-rust);
  text-decoration: underline;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
  align-items: center;
  margin-top: var(--space-20);
  padding-top: var(--space-16);
  border-top: 2px dashed var(--color-border-dark);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ink-muted);
}

.meta-pill {
  background-color: var(--color-retro-mustard);
  color: var(--color-ink);
  padding: 3px 8px;
  border: 1px solid var(--color-border-dark);
  box-shadow: 1.5px 1.5px 0 var(--color-border-dark);
  text-transform: uppercase;
  font-weight: 700;
  font-size: 0.74rem;
}

.article-body-layout {
  display: grid;
  grid-template-columns: 2.2fr 1fr;
  gap: var(--space-40);
  padding: var(--space-48) 0;
}

.article-content {
  background-color: var(--color-surface);
  border: 2px solid var(--color-border-dark);
  padding: var(--space-32);
  box-shadow: var(--retro-3d-card);
}

.article-content h2 {
  margin-top: var(--space-32);
  border-bottom: 2px solid var(--color-border-dark);
  padding-bottom: var(--space-8);
}

.article-content h2:first-of-type {
  margin-top: 0;
}

.article-content h3 {
  margin-top: var(--space-24);
}

.article-content ul, 
.article-content ol {
  margin: var(--space-16) 0 var(--space-24) var(--space-24);
}

.article-content li {
  margin-bottom: var(--space-8);
}

.citation-callout {
  border-left: 6px solid var(--color-retro-rust);
  background-color: var(--color-surface-warm);
  border-top: 1.5px solid var(--color-border-dark);
  border-right: 1.5px solid var(--color-border-dark);
  border-bottom: 1.5px solid var(--color-border-dark);
  padding: var(--space-20);
  margin: var(--space-32) 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.12rem;
  line-height: 1.6;
  box-shadow: var(--retro-shadow-sm);
}

.citation-cite {
  display: block;
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-retro-teal);
  margin-top: var(--space-12);
  text-transform: uppercase;
}

/* Comparison Tables - Retro Bookkeeping Ledger */
.comparison-table-wrapper {
  overflow-x: auto;
  margin: var(--space-32) 0;
  border: 2px solid var(--color-border-dark);
  box-shadow: var(--retro-shadow-sm);
}

.editorial-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
  background-color: var(--color-surface);
}

.editorial-table th,
.editorial-table td {
  padding: var(--space-12) var(--space-16);
  border: 1px solid var(--color-border-dark);
}

.editorial-table th {
  background-color: var(--color-surface-subtle);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.editorial-table tbody tr:nth-child(even) {
  background-color: var(--color-surface-tint);
}

/* Sidebar Widgets - Index Card Filing Style */
.sidebar-sticky-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-20);
}

.sidebar-widget {
  background-color: var(--color-surface-warm);
  border: 2px solid var(--color-border-dark);
  padding: var(--space-20);
  box-shadow: var(--retro-3d-card);
}

.sidebar-widget-title {
  font-size: 0.95rem;
  border-bottom: 2px dashed var(--color-border-dark);
  padding-bottom: var(--space-8);
  margin-bottom: var(--space-12);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-retro-rust);
}

.criteria-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
}

.criteria-item strong {
  display: block;
  font-size: 0.92rem;
  color: var(--color-ink);
  font-family: var(--font-mono);
}

.criteria-item span {
  font-size: 0.88rem;
  color: var(--color-ink-muted);
}

/* Contact & Forms - Vintage Registry Desk */
.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-40);
}

.form-group {
  margin-bottom: var(--space-20);
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.form-label-req {
  color: var(--color-retro-rust);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 10px var(--space-12);
  border: 2px solid var(--color-border-dark);
  background-color: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 1.02rem;
  border-radius: var(--radius-none);
  box-shadow: 2px 2px 0 var(--color-border);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-retro-rust);
  box-shadow: 3px 3px 0 var(--color-border-dark);
}

.form-input.is-invalid,
.form-textarea.is-invalid {
  border-color: var(--color-retro-rust);
  background-color: #fff4f1;
}

.form-error {
  color: var(--color-retro-rust);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  margin-top: var(--space-4);
  display: none;
}

.form-error.is-visible {
  display: block;
}

.form-status {
  padding: var(--space-16);
  margin-bottom: var(--space-20);
  border: 2px solid transparent;
  display: none;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.form-status.is-visible {
  display: block;
}

.form-status.is-success {
  background-color: #eaf4ed;
  border-color: var(--color-retro-olive);
  color: var(--color-retro-olive);
  box-shadow: var(--retro-shadow-sm);
}

.static-map-box {
  background-color: var(--color-surface);
  border: 2px solid var(--color-border-dark);
  padding: var(--space-20);
  box-shadow: var(--retro-3d-card);
  position: relative;
  overflow: hidden;
}

.map-svg-render {
  width: 100%;
  height: 220px;
  background-color: #ede7da;
  border: 2px solid var(--color-border-dark);
  margin-bottom: var(--space-16);
  box-shadow: inset 1px 1px 4px rgba(0, 0, 0, 0.1);
}

/* Site Footer - Deep Petrol Archive Docket */
.site-footer {
  background-color: var(--color-navy);
  color: #efece5;
  border-top: 4px solid var(--color-retro-mustard);
  padding-top: var(--space-48);
  padding-bottom: var(--space-32);
  margin-top: auto;
  position: relative;
}

.site-footer a {
  color: #ffffff;
}

.site-footer a:hover {
  color: var(--color-retro-mustard);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-32);
  padding-bottom: var(--space-32);
  border-bottom: 1px dashed rgba(255, 255, 255, 0.2);
}

.footer-brand h4 {
  color: #ffffff;
  font-size: 1.3rem;
  margin-bottom: var(--space-12);
  letter-spacing: 0.02em;
}

.footer-desc {
  font-size: 0.88rem;
  color: #c9cbce;
  line-height: 1.6;
  margin-bottom: var(--space-20);
}

.footer-heading {
  color: var(--color-retro-mustard);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: var(--space-12);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-nav a {
  color: #d8dade;
  text-decoration: none;
  font-size: 0.88rem;
  font-family: var(--font-serif);
}

.footer-nav a:hover {
  color: var(--color-retro-mustard);
  text-decoration: underline;
}

.footer-address {
  font-style: normal;
  font-size: 0.84rem;
  color: #c9cbce;
  line-height: 1.6;
  font-family: var(--font-mono);
}

.footer-bottom {
  padding-top: var(--space-20);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-16);
  font-size: 0.78rem;
  color: #9ea4ab;
  font-family: var(--font-mono);
}

/* Cookie Banner - Retro Notice Ticket */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border-top: 3px solid var(--color-border-dark);
  box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.15);
  padding: var(--space-16) var(--space-24);
  z-index: 999;
}

.cookie-banner[hidden] {
  display: none !important;
}

.cookie-banner-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
}

.cookie-banner-text {
  flex: 1 1 500px;
  font-size: 0.88rem;
  color: var(--color-ink);
}

.cookie-banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.cookie-banner-actions .btn {
  padding: 4px 10px;
  font-size: 0.72rem;
}

/* =========================================================
   RESPONSIVE ADJUSTMENTS
   ========================================================= */
@media (max-width: 1024px) {
  .hero-layout,
  .article-body-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-32);
  }

  .retro-row-card .framed-card-content {
    grid-template-columns: 1fr 190px;
  }

  .editorial-columns {
    grid-template-columns: 1fr;
    gap: var(--space-20);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

/* Collapse navigation comfortably at standard tablet threshold */
@media (max-width: 960px) {
  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 2px solid var(--color-border-dark);
    padding: var(--space-16) var(--space-24);
    box-shadow: 0 8px 18px rgba(35, 28, 22, 0.15);
    flex-direction: column;
    align-items: flex-start;
    z-index: 1001;
  }

  .site-nav.is-visible {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 4px;
  }

  .nav-link {
    display: block;
    padding: 7px 10px;
    font-size: 0.82rem;
    border-bottom: 1px dotted var(--color-border);
  }

  .nav-link.is-active {
    border-color: var(--color-border-dark);
  }
}

@media (max-width: 860px) {
  .retro-row-card {
    flex-direction: column;
  }

  .card-spine-tab {
    width: 100%;
    flex-direction: row;
    justify-content: space-between;
    border-right: none;
    border-bottom: 2px dashed var(--color-border-dark);
    padding: var(--space-8) var(--space-16);
    box-shadow: inset 0 -2px 5px rgba(0, 0, 0, 0.05);
  }

  .spine-shelf-label {
    display: none;
  }

  .spine-num {
    font-size: 1.4rem;
  }

  .retro-row-card .framed-card-content {
    grid-template-columns: 1fr;
    padding: var(--space-16);
  }

  .retro-row-card .card-meta-box {
    border-left: none;
    border-top: 1.5px dashed var(--color-border);
    padding-left: 0;
    padding-top: var(--space-16);
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 4px var(--space-16);
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

  .section-padding {
    padding-top: var(--space-32);
    padding-bottom: var(--space-32);
  }

  .article-content {
    padding: var(--space-20);
  }
}

@media (max-width: 580px) {
  .brand-sub {
    display: none;
  }

  .brand-name {
    font-size: 0.96rem;
  }

  .container {
    padding: 0 var(--space-16);
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .retro-row-card .card-meta-box {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-12);
  }

  .retro-row-card .card-action-link {
    width: 100%;
  }

  .cookie-banner-actions {
    flex-direction: column;
    width: 100%;
  }

  .cookie-banner-actions button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
  .book-3d {
    transform: none !important;
  }
}