/* ============================================================================
   Ancient Measures shared stylesheet
   ---------------------------------------------------------------------------
   This is the single deployable style source for every v4 page. It follows
   the Knowledge Base order: tokens, foundations, layout, components, then
   responsive and print overrides. Keep page-specific styling in semantic
   classes here; do not add inline style attributes to HTML.
   ============================================================================ */

/* ========== 1. DESIGN TOKENS ============================================== */

:root {
  --midnight: #14162b;
  --midnight-2: #1e223d;
  --parchment: #f6f1e7;
  --paper: #fffdf8;
  --ink: #202238;
  --ink-deep: #14162b;
  --muted: #666879;
  --gold: #d4af37;
  --gold-dark: #8f6c16;
  --aged-gold: #c8a951;
  --oxblood: #8b2d2b;
  --slate: #4a7c9b;
  --line: rgba(32, 34, 56, 0.16);
  --shadow: 0 18px 55px rgba(20, 22, 43, 0.12);
  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Source Sans 3", "Ancient Measures Source Fallback", Georgia, serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
  --measure: 74rem;
}

/* Metrics-adjusted local fallback for Source Sans 3. Values derive from the
   fonts' x-height and OS/2 typo metrics, measured on 2026-08-09. */
@font-face {
  font-family: "Ancient Measures Source Fallback";
  src: local("Georgia");
  size-adjust: 99.25%;
  ascent-override: 103.18%;
  descent-override: 40.30%;
  line-gap-override: 0%;
}

/* Guarded Traditional Chinese subset: 中國度量衡史吳承洛尺寸丈斤兩.
   The browser does not fetch this WOFF2 unless one of these codepoints renders. */
@font-face {
  font-family: "Noto Serif TC";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("https://fonts.gstatic.com/l/font?kit=XLYgIZb5bJNDGYxLBibeHZ0BhnIcZ53Uwia3tJoX2i_MoYeUHZ4RAYH1E0RMEwyBnjlc0EUZDm2QjahThJrWoQ&skey=dafe25338141b30f&v=v36") format("woff2");
  unicode-range: U+4E08, U+4E2D, U+5169, U+53F2, U+5433, U+570B, U+5BF8, U+5C3A, U+5EA6, U+627F, U+65A4, U+6D1B, U+8861, U+91CF;
}

.source-list .orig,
blockquote.pull .orig {
  font-family: "Noto Serif TC", var(--serif);
}

/* ========== 2. FOUNDATIONS AND ACCESSIBILITY ============================= */

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--parchment);
  font-family: var(--sans);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
a {
  color: var(--gold-dark);
  text-underline-offset: 0.2em;
}
a:hover {
  color: var(--oxblood);
}
img,
svg {
  max-width: 100%;
}
button,
input,
select {
  font: inherit;
}
button,
select {
  cursor: pointer;
}
:focus-visible {
  outline: 3px solid var(--slate);
  outline-offset: 3px;
}
.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.5rem;
  left: 0.5rem;
  transform: translateY(-160%);
  background: white;
  color: var(--ink);
  padding: 0.65rem 1rem;
}
.skip-link:focus {
  transform: none;
}

/* ========== 3. SITE HEADER AND NAVIGATION ================================ */

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  color: var(--parchment);
  background: rgba(20, 22, 43, 0.96);
  border-bottom: 1px solid rgba(212, 175, 55, 0.35);
  backdrop-filter: blur(14px);
}
.nav-shell {
  width: min(calc(100% - 2rem), var(--measure));
  min-height: 4.6rem;
  margin: auto;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: white;
  text-decoration: none;
  white-space: nowrap;
}
.brand-mark {
  width: 2.1rem;
  height: 2.1rem;
  color: var(--gold);
}
.site-footer .brand-mark {
  transform: translateY(0.42rem);
}
.brand-copy {
  font-family: var(--serif);
  font-size: 1.28rem;
  letter-spacing: 0.02em;
}
.brand-copy small {
  display: block;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.53rem;
  line-height: 1;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.nav-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 0.35rem;
  color: white;
  background: transparent;
  padding: 0.5rem 0.7rem;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.15rem;
  margin-left: auto;
}
.site-nav a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.84rem;
  font-weight: 650;
  text-decoration: none;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--gold);
}
.site-nav a.nav-tool {
  color: var(--gold);
}
.site-nav a.nav-tool:hover,
.site-nav a.nav-tool[aria-current="page"] {
  color: rgba(255, 255, 255, 0.8);
}
.nav-cta {
  border: 1px solid var(--gold);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
}

/* ========== 4. HOME HERO ================================================== */

.hero {
  position: relative;
  overflow: hidden;
  color: var(--parchment);
  background: var(--midnight);
}
.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10%;
  opacity: 0.33;
  background:
    radial-gradient(
      circle at 74% 30%,
      rgba(74, 124, 155, 0.65),
      transparent 24%
    ),
    repeating-radial-gradient(
      circle at 74% 40%,
      transparent 0 38px,
      rgba(212, 175, 55, 0.22) 39px 40px
    );
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -3rem 38%;
  height: 18rem;
  border: 1px solid rgba(212, 175, 55, 0.5);
  transform: skew(-28deg);
  opacity: 0.35;
}
.hero-grid {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 2rem), var(--measure));
  min-height: 38rem;
  margin: auto;
  padding: 3rem 0 2.25rem;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(20rem, 0.88fr);
  align-items: start;
  gap: 4rem;
}
.kicker {
  margin: 0 0 0.8rem;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.section-index-link {
  color: var(--gold);
}
h1,
h2,
h3,
h4 {
  margin: 0 0 0.65em;
  font-family: var(--serif);
  line-height: 1.04;
  text-wrap: balance;
}
h1 {
  max-width: 12ch;
  font-size: clamp(3.4rem, 8vw, 7rem);
  font-weight: 500;
  letter-spacing: -0.04em;
}
h2 {
  font-size: clamp(2.1rem, 4.5vw, 3.8rem);
  font-weight: 550;
}
h3 {
  font-size: clamp(1.35rem, 2vw, 1.75rem);
}
.hero .lede {
  max-width: 41rem;
  margin-bottom: 0;
  color: rgba(246, 241, 231, 0.78);
  font-family: var(--serif);
  font-size: clamp(1.22rem, 2.2vw, 1.55rem);
  line-height: 1.28;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.7rem;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.85rem;
  border: 1px solid var(--gold);
  border-radius: 0.25rem;
  padding: 0.65rem 1rem;
  color: var(--midnight);
  background: var(--gold);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}
.button:hover {
  color: var(--midnight);
  background: #e5c557;
}
.button.secondary {
  color: var(--parchment);
  background: transparent;
}
.button.secondary:hover {
  color: white;
  background: rgba(255, 255, 255, 0.08);
}
.hero-figure {
  position: relative;
  min-height: 26rem;
  display: grid;
  place-items: start center;
}
.pyramid-orbit {
  width: min(30rem, 88vw);
  aspect-ratio: 1;
  animation: breathe 8s ease-in-out infinite;
}
@keyframes breathe {
  50% {
    transform: translateY(-0.5rem);
  }
}
.measure-strip {
  position: absolute;
  right: 0;
  bottom: 2rem;
  left: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid rgba(212, 175, 55, 0.35);
  background: rgba(20, 22, 43, 0.8);
}
.measure-strip div {
  padding: 0.75rem;
  border-right: 1px solid rgba(212, 175, 55, 0.25);
}
.measure-strip div:last-child {
  border-right: 0;
}
.measure-strip strong {
  display: block;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.92rem;
}
.measure-strip span {
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.68rem;
}

/* ========== 5. PAGE HEROES AND SHARED LAYOUT ============================= */

.page-hero {
  color: var(--parchment);
  background: var(--midnight);
  border-bottom: 1px solid rgba(212, 175, 55, 0.4);
}
.page-hero-inner {
  width: min(calc(100% - 2rem), var(--measure));
  margin: auto;
  padding: 3rem 0 2.25rem;
}
.page-hero h1 {
  max-width: 18ch;
  margin-bottom: 0.32em;
  font-size: clamp(3rem, 7vw, 5.8rem);
}
.page-hero .kicker {
  margin-bottom: 0.5rem;
}
.page-hero .lede {
  max-width: 48rem;
  color: rgba(246, 241, 231, 0.76);
  font-family: var(--serif);
  font-size: 1.35rem;
}
.breadcrumbs {
  margin-bottom: 0.8rem;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.75rem;
}
.breadcrumbs a {
  color: var(--gold);
}

/* Keep the primary menu-level page headers on one shared vertical rhythm. */
.converter-page > main > .section:first-of-type {
  padding: 2.75rem 0 0;
}
.converter-page .tool-panel .eyebrow {
  margin-bottom: 0.65rem;
}

.section {
  padding: 3.25rem 0;
}
.section-action {
  margin-top: 1.5rem;
}
.section-action.spacious {
  margin-top: 2rem;
}
.swap-button {
  margin-bottom: 1rem;
}
.table-scroll {
  overflow-x: auto;
}
.section.tight {
  padding: 1.25rem 0 0.85rem;
}
.converter-page > main > .section.tight {
  padding-top: 0;
  padding-bottom: 1.25rem;
}
.converter-page .callout {
  margin-top: 0;
}
.section.dark {
  color: var(--parchment);
  background: var(--midnight);
}
.section.blue {
  color: white;
  background: var(--slate);
}
.shell {
  width: min(calc(100% - 2rem), var(--measure));
  margin: auto;
}
.narrow {
  width: min(calc(100% - 2rem), 49rem);
  margin: auto;
}
.section-head {
  max-width: 46rem;
  margin-bottom: 2.5rem;
}
.section-head p {
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.2rem;
}
.dark .section-head p {
  color: rgba(255, 255, 255, 0.7);
}
.eyebrow {
  color: var(--oxblood);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}
.dark .eyebrow {
  color: var(--gold);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}
.card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  padding: 1.55rem;
  background: rgba(255, 255, 255, 0.58);
  box-shadow: 0 8px 25px rgba(20, 22, 43, 0.05);
}
.card p {
  color: var(--muted);
}
.card-link {
  color: inherit;
  text-decoration: none;
}
.card-link:hover h3 {
  color: var(--oxblood);
}
.card .meta {
  color: var(--gold-dark);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.feature-card {
  min-height: 18rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: white;
  background: var(--midnight-2);
  border-color: rgba(212, 175, 55, 0.3);
}
.feature-card p {
  color: rgba(255, 255, 255, 0.65);
}
.feature-card .meta {
  color: var(--gold);
}
.feature-card .button {
  align-self: flex-start;
  margin-top: auto;
}
.dark .card:not(.feature-card) {
  color: var(--ink);
  background: var(--paper);
}
.dark .card:not(.feature-card) p {
  color: var(--muted);
}

/* ========== 6. CONVERTER COMPONENTS ====================================== */

.tool-wrap {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(22rem, 1.1fr);
  gap: 1.4rem;
  align-items: stretch;
}
.tool-panel,
.result-panel {
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.result-panel {
  position: sticky;
  top: 6rem;
  color: var(--parchment);
  background: var(--midnight);
  border-color: rgba(212, 175, 55, 0.35);
}
.field {
  margin-bottom: 1rem;
}
.field label {
  display: block;
  margin-bottom: 0.38rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.field input,
.field select {
  width: 100%;
  min-height: 3.1rem;
  border: 1px solid #bbb9b0;
  border-radius: 0.3rem;
  padding: 0.6rem 0.75rem;
  color: var(--ink);
  background: white;
  font-variant-numeric: tabular-nums lining-nums;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.result-number {
  margin: 0.25rem 0;
  color: var(--gold);
  font-family: var(--mono);
  font-size: clamp(2.3rem, 6vw, 4.7rem);
  line-height: 1;
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums lining-nums;
}
.result-unit {
  color: rgba(255, 255, 255, 0.7);
  font-family: var(--serif);
  font-size: 1.35rem;
}
.result-note {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.67);
  font-size: 0.82rem;
}
.result-note a {
  color: var(--gold);
}
.status {
  min-height: 1.5rem;
  font-size: 0.8rem;
}
.copy-status {
  color: var(--gold);
}
.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}
.formula-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1rem;
}
.metric-box-wide {
  grid-column: 1 / -1;
}
.formula-grid > .metric-box:not(.metric-box-wide) {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}
/* The dodecahedron has long measurements and units within compact cards. */
.dodecahedron-results .formula-grid > .metric-box:not(.metric-box-wide) strong {
  font-size: clamp(1.15rem, 1.55vw, 1.55rem);
  line-height: 1.1;
}.formula-grid > .metric-box:not(.metric-box-wide) strong {
  color: var(--gold);
  font-size: clamp(2.1rem, 2.6vw, 2.85rem);
  line-height: 0.92;
}
.metric-box {
  padding: 1rem;
  border: 1px solid rgba(212, 175, 55, 0.25);
  background: rgba(255, 255, 255, 0.04);
}
.metric-box span {
  display: block;
  color: rgba(255, 255, 255, 0.56);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.metric-box strong {
  display: block;
  margin-top: 0.3rem;
  color: white;
  font-family: var(--mono);
  font-size: 1.05rem;
  font-variant-numeric: tabular-nums lining-nums;
}
.metric-box small {
  display: block;
  min-height: 1.1rem;
  margin-top: 0.35rem;
  color: rgba(246, 241, 231, 0.62);
  font-size: 0.66rem;
  line-height: 1.45;
}

/* Pyramid selector and the proportioned profile reuse the homepage's
   gold-line infographic language while keeping the calculation legible. */
.pyramid-selector h2,
.pyramid-results h2 {
  margin-bottom: 1rem;
}
.pyramid-selector .button {
  margin-top: 0.5rem;
}
.pyramid-selection-summary {
  margin: 1.25rem 0;
  padding: 1rem;
  border: 1px solid var(--line);
  background: rgba(212, 175, 55, 0.06);
}
.pyramid-selection-summary p {
  margin: 0.45rem 0 0;
}
.pyramid-selection-summary .pyramid-name {
  margin-top: 0;
  color: var(--midnight);
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 700;
}
.pyramid-results-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}
.pyramid-results-head #pyramid-result-badge {
  flex: 0 0 auto;
  max-width: none;
  border: 1px solid #e7c75c;
  padding: 0.38rem 0.72rem;
  color: var(--ink-deep);
  background: var(--gold);
  box-shadow: 0 4px 14px rgba(212, 175, 55, 0.18);
  text-align: center;
  white-space: nowrap;
}
.pyramid-profile-figure {
  margin: 1rem 0 1.25rem;
  overflow: hidden;
  border: 1px solid rgba(212, 175, 55, 0.28);
  background: rgba(255, 255, 255, 0.018);
}
.pyramid-profile {
  display: block;
  width: 100%;
  height: auto;
  color: var(--gold);
}
.pyramid-profile .profile-rings {
  opacity: 0.16;
  stroke-width: 1;
}
.pyramid-profile .profile-construction {
  opacity: 0.55;
}
.pyramid-profile .profile-shape {
  fill: none;
  stroke: var(--gold);
  stroke-linejoin: round;
  stroke-width: 2.6;
  opacity: 0.22;
}
.pyramid-profile .profile-dimensions,
.pyramid-profile .profile-labels,
.pyramid-profile .profile-nodes {
  opacity: 0;
}
.pyramid-profile.has-selection .profile-shape,
.pyramid-profile.has-selection .profile-dimensions,
.pyramid-profile.has-selection .profile-labels,
.pyramid-profile.has-selection .profile-nodes {
  opacity: 1;
}
.pyramid-profile .profile-dimensions {
  fill: none;
  stroke: rgba(212, 175, 55, 0.55);
  stroke-width: 1;
}
.pyramid-profile .profile-nodes {
  fill: var(--gold);
}
.pyramid-profile .profile-labels {
  fill: var(--parchment);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.015em;
}
.pyramid-profile #pyramid-profile-base {
  text-anchor: middle;
}
.pyramid-profile #pyramid-profile-angle-label {
  fill: var(--gold);
}
.pyramid-profile .profile-empty {
  fill: rgba(246, 241, 231, 0.5);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-anchor: middle;
  text-transform: uppercase;
}
.pyramid-profile .profile-empty[hidden] {
  display: none;
}
.pyramid-profile-figure figcaption {
  padding: 0.75rem 1rem;
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  color: rgba(246, 241, 231, 0.62);
  font-size: 0.7rem;
  line-height: 1.5;
}
.pyramid-pattern-note {
  margin-top: 1rem;
  padding: 1rem;
  border-top: 1px solid rgba(212, 175, 55, 0.3);
  background: rgba(212, 175, 55, 0.06);
}
.pyramid-pattern-note p:last-child {
  margin-bottom: 0;
  color: rgba(246, 241, 231, 0.82);
  font-size: 0.86rem;
}

/* ========== 7. EVIDENCE, CARDS, AND RESEARCH CONTENT ==================== */

.evidence-key {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.3rem 0;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-radius: 999px;
  padding: 0.28rem 0.58rem;
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.badge.measured {
  color: #173447;
  background: #dbeaf2;
}
.badge.interpretation {
  color: #6f201f;
  background: #f4dedd;
}
.badge.derived {
  color: #604a0f;
  background: #f2e7be;
}
.callout {
  margin: 2rem 0;
  border-left: 4px solid var(--slate);
  padding: 1rem 1.2rem;
  background: #e8f0f3;
}
.callout.theory {
  border-left-color: var(--oxblood);
  background: #f5e7e4;
}
.callout strong {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--serif);
  font-size: 1.25rem;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 17rem;
  gap: 4rem;
  align-items: start;
}
.prose {
  font-family: var(--serif);
  font-size: 1.16rem;
}
.prose h2 {
  margin-top: 2.1em;
  font-size: 2.25rem;
}
.prose h3 {
  margin-top: 1.8em;
}
.prose p {
  margin: 0 0 1.25em;
}
.prose li {
  margin-bottom: 0.55rem;
}
.prose .mono,
.mono {
  font-family: var(--mono);
}
.article-aside {
  position: sticky;
  top: 6rem;
  border-top: 3px solid var(--gold);
  padding-top: 1rem;
  font-size: 0.8rem;
}
.article-aside h2 {
  font-size: 1.35rem;
}
.article-aside ul {
  padding-left: 1rem;
}
.article-aside li {
  margin-bottom: 0.65rem;
}
.source-list {
  padding-left: 1.2rem;
}
.source-list li {
  margin-bottom: 0.7rem;
  overflow-wrap: anywhere;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  font-variant-numeric: tabular-nums lining-nums;
}
.data-table th,
.data-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0.45rem;
  text-align: left;
  vertical-align: top;
}
.data-table th {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ========== 8. INTERACTIVE GEOMETRY STUDIES ============================== */

.giza-intro {
  max-width: 48rem;
  margin-bottom: 2.5rem;
}
.giza-intro h2 {
  max-width: 16ch;
}
.giza-intro p:last-child {
  max-width: 44rem;
  color: rgba(246, 241, 231, 0.76);
  font-family: var(--serif);
  font-size: 1.2rem;
}
.giza-stage {
  display: grid;
  grid-template-columns: 1.06fr 0.94fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.giza-diagram {
  margin: 0;
  border: 1px solid rgba(212, 175, 55, 0.36);
  background:
    radial-gradient(
      circle at 50% 42%,
      rgba(74, 124, 155, 0.26),
      transparent 55%
    ),
    var(--midnight-2);
}
.giza-diagram svg {
  display: block;
  width: 100%;
  height: auto;
  padding: clamp(1rem, 3vw, 1.8rem);
}
.giza-diagram figcaption {
  padding: 0.9rem 1.1rem;
  border-top: 1px solid rgba(212, 175, 55, 0.22);
  color: rgba(246, 241, 231, 0.72);
  font-size: 0.78rem;
}
.giza-controls {
  color: var(--parchment);
}
.giza-controls h3 {
  max-width: 15ch;
  margin-top: 0.7rem;
  font-size: clamp(2rem, 4vw, 3.35rem);
}
.giza-selected-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}
.giza-selected-head .kicker {
  margin: 0;
}
.giza-result {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.8rem;
  margin: 1rem 0 0.75rem;
}
.giza-result-value {
  color: var(--gold);
  font-family: var(--mono);
  font-size: clamp(2.7rem, 5vw, 4.35rem);
  line-height: 1;
}
.giza-result-unit {
  color: rgba(246, 241, 231, 0.78);
  font-family: var(--serif);
  font-size: 1.25rem;
}
.giza-model-note {
  max-width: 38rem;
  margin-bottom: 0.6rem;
  font-size: 1rem;
}
.giza-difference {
  margin: 0;
  color: #f2cf67;
  font-family: var(--mono);
  font-size: 0.82rem;
}
.giza-reference-note {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.25rem 0 1.5rem;
  border-block: 1px solid rgba(246, 241, 231, 0.16);
  padding: 0.85rem 0;
  color: rgba(246, 241, 231, 0.68);
  font-size: 0.75rem;
}
.giza-reference-note strong {
  color: var(--parchment);
  font-family: var(--mono);
  font-weight: 650;
  text-align: right;
}
.model-selector {
  margin: 0;
  border: 0;
  padding: 0;
}
.model-selector legend {
  margin-bottom: 0.65rem;
  color: var(--parchment);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.model-options {
  display: grid;
  gap: 0.55rem;
}
.model-option {
  position: relative;
  display: block;
  cursor: pointer;
}
.model-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}
.model-option span {
  display: grid;
  grid-template-columns: minmax(7rem, 0.55fr) minmax(0, 1fr);
  align-items: center;
  gap: 0.8rem;
  min-height: 3.7rem;
  border: 1px solid rgba(246, 241, 231, 0.24);
  border-radius: 0.35rem;
  padding: 0.65rem 0.8rem;
  background: rgba(255, 255, 255, 0.035);
}
.model-option strong {
  color: var(--parchment);
  font-family: var(--serif);
  font-size: 1.12rem;
}
.model-option small {
  color: rgba(246, 241, 231, 0.68);
  font-size: 0.72rem;
}
.model-option:hover span {
  border-color: rgba(212, 175, 55, 0.65);
  background: rgba(212, 175, 55, 0.06);
}
.model-option input:checked + span {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.12);
  box-shadow: inset 4px 0 0 var(--gold);
}
.model-option input:focus-visible + span {
  outline: 3px solid var(--slate);
  outline-offset: 3px;
}
.theory-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}
.theory-card {
  border: 1px solid rgba(32, 34, 56, 0.14);
  border-top: 4px solid var(--oxblood);
  padding: 1.35rem;
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.12);
}
.theory-card h3 {
  color: var(--ink);
}
.theory-card p {
  color: #505262;
}
.theory-card strong {
  color: #6f201f;
  font-family: var(--mono);
}
.theory-card.measured-card {
  border-top-color: var(--slate);
}
.theory-card.measured-card strong {
  color: #244e67;
}
.theory-card[data-active="true"] {
  border-color: var(--gold);
  box-shadow:
    0 0 0 2px var(--gold),
    0 14px 34px rgba(0, 0, 0, 0.2);
}

/* ========== 9. MONUMENT AND TEMPLE COMPONENTS ============================ */

.monument-figure {
  margin: 2.6rem 0 3rem;
  border: 1px solid rgba(212, 175, 55, 0.38);
  color: var(--parchment);
  background: var(--midnight-2);
  box-shadow: 0 16px 38px rgba(20, 22, 43, 0.16);
}
.monument-figure-head {
  padding: clamp(1.25rem, 3vw, 2rem);
  background: radial-gradient(
    circle at 92% 8%,
    rgba(74, 124, 155, 0.2),
    transparent 42%
  );
}
.monument-figure-head .badge {
  margin-bottom: 0.85rem;
}
.monument-figure-head .eyebrow {
  margin-bottom: 0.3rem;
  color: var(--gold);
}
.monument-figure-head h2 {
  max-width: 18ch;
  margin: 0 0 0.7rem;
  color: var(--parchment);
  font-size: clamp(1.9rem, 4vw, 3rem);
}
.monument-figure-head > p:last-child {
  max-width: 46rem;
  margin: 0;
  color: rgba(246, 241, 231, 0.74);
  font-family: var(--serif);
  font-size: 1.05rem;
}
.monument-diagram {
  border-block: 1px solid rgba(212, 175, 55, 0.22);
  background:
    radial-gradient(
      circle at 50% 45%,
      rgba(74, 124, 155, 0.17),
      transparent 58%
    ),
    #101226;
}
.monument-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}
.monument-diagram .diagram-line-gold,
.monument-diagram .diagram-line-slate,
.monument-diagram .diagram-line-muted,
.monument-diagram .diagram-line-theory {
  fill: none;
  vector-effect: non-scaling-stroke;
}
.monument-diagram .diagram-line-gold {
  stroke: var(--gold);
  stroke-width: 2.5;
}
.monument-diagram .diagram-line-slate {
  stroke: #74a8c5;
  stroke-width: 2;
}
.monument-diagram .diagram-line-muted {
  stroke: rgba(246, 241, 231, 0.48);
  stroke-width: 1.5;
}
.monument-diagram .diagram-line-theory {
  stroke: #c86560;
  stroke-width: 2.5;
  stroke-dasharray: 8 7;
}
.monument-diagram .diagram-fill-gold {
  fill: rgba(212, 175, 55, 0.18);
  stroke: var(--gold);
  stroke-width: 2;
}
.monument-diagram .diagram-fill-slate {
  fill: rgba(74, 124, 155, 0.2);
  stroke: #74a8c5;
  stroke-width: 1.5;
}
.monument-diagram .diagram-dimension {
  stroke-width: 1.4;
}
.monument-diagram .diagram-axis {
  stroke-width: 3.5;
}
.monument-diagram .diagram-column-gold {
  fill: rgba(212, 175, 55, 0.28);
  stroke: var(--gold);
  stroke-width: 1.5;
}
.monument-diagram .diagram-label,
.monument-diagram .diagram-value {
  fill: rgba(246, 241, 231, 0.78);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.monument-diagram .diagram-value {
  fill: var(--gold);
  font-size: 25px;
  font-weight: 750;
  letter-spacing: 0;
}
.monument-diagram .diagram-theory-text {
  fill: #e7a19d;
}
.monument-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.monument-metric {
  padding: 1rem 1.1rem;
  border-right: 1px solid rgba(246, 241, 231, 0.14);
}
.monument-metric:last-child {
  border-right: 0;
}
.monument-metric span,
.monument-metric small {
  display: block;
}
.monument-metric span {
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.monument-metric strong {
  display: block;
  margin: 0.35rem 0 0.25rem;
  color: var(--parchment);
  font-family: var(--mono);
  font-size: 1.05rem;
}
.monument-metric small {
  color: rgba(246, 241, 231, 0.62);
  font-family: var(--sans);
  font-size: 0.68rem;
  line-height: 1.45;
}
.monument-figure figcaption {
  padding: 0.85rem 1.1rem;
  border-top: 1px solid rgba(246, 241, 231, 0.14);
  color: rgba(246, 241, 231, 0.62);
  font-family: var(--sans);
  font-size: 0.7rem;
  line-height: 1.5;
}
.monument-figure figcaption span {
  display: block;
  margin-top: 0.25rem;
}
.monument-figure figcaption a {
  color: #f0cf67;
}

.selection-note {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(20rem, 1.15fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  margin-bottom: 3rem;
}
.selection-note h2 {
  max-width: 15ch;
}
.selection-note > p {
  margin: 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 1.2rem;
}
.temple-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.temple-card {
  display: grid;
  grid-template-columns: 6.8rem minmax(0, 1fr);
  min-height: 20rem;
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.58);
  box-shadow: 0 10px 28px rgba(20, 22, 43, 0.07);
  text-decoration: none;
}
.temple-card:hover {
  color: var(--ink);
  border-color: var(--gold-dark);
  background: var(--paper);
  transform: translateY(-2px);
}
.temple-rank {
  display: grid;
  place-items: start center;
  padding-top: 1.3rem;
  color: var(--gold-dark);
  background: rgba(212, 175, 55, 0.12);
  font-family: var(--mono);
  font-size: 1.45rem;
  font-weight: 800;
}
.temple-card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.3rem 1.4rem 1.4rem;
}
.temple-location {
  margin: 0.7rem 0 0.2rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.temple-card-body > strong {
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  line-height: 1.05;
}
.temple-summary {
  margin: 0.75rem 0 1.2rem;
  color: #505262;
}
.temple-detail {
  display: grid;
  grid-template-columns: 7.3rem minmax(0, 1fr);
  gap: 0.6rem;
  width: 100%;
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 0.65rem;
  color: #505262;
  font-size: 0.75rem;
}
.temple-detail + .temple-detail {
  margin-top: 0.55rem;
}
.temple-detail b {
  color: var(--gold-dark);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.feature-link {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 2rem;
  border: 1px solid rgba(212, 175, 55, 0.4);
  padding: clamp(1.2rem, 3vw, 2rem);
  color: var(--parchment);
  background: rgba(255, 255, 255, 0.04);
  text-decoration: none;
}
.feature-link:hover {
  color: white;
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.08);
}
.feature-link small {
  display: block;
  color: var(--gold);
  font-family: var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}
.feature-link strong {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 4vw, 2.8rem);
  line-height: 1.05;
}
.site-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
}
.site-facts > div {
  padding: 1.1rem;
  border-right: 1px solid var(--line);
}
.site-facts > div:last-child {
  border-right: 0;
}
.site-facts span {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--gold-dark);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.site-facts strong {
  display: block;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1.2;
}
.site-facts small {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 400;
  line-height: 1.4;
}

/* ========== 10. SITE FOOTER ============================================== */

.site-footer {
  color: rgba(255, 255, 255, 0.7);
  background: #0d0f20;
  border-top: 3px solid var(--gold);
}
.footer-grid {
  width: min(calc(100% - 2rem), var(--measure));
  margin: auto;
  padding: 3.5rem 0;
  display: grid;
  grid-template-columns: minmax(18rem, 1.5fr) repeat(2, minmax(10rem, 1fr));
  gap: 2rem;
}
.site-footer h2 {
  color: white;
  font-size: 1.25rem;
}
.footer-links {
  padding-top: 0.15rem;
}
.site-footer a {
  display: block;
  margin: 0.4rem 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.78rem;
  text-decoration: none;
}
.site-footer a:hover {
  color: var(--gold);
}
.footer-note {
  width: min(calc(100% - 2rem), var(--measure));
  margin: auto;
  padding: 1rem 0 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.68rem;
}

/* ========== 11. RESPONSIVE OVERRIDES ===================================== */

@media (max-width: 900px) {
  .nav-toggle {
    display: block;
  }
  .site-nav {
    display: none;
    position: absolute;
    inset: 4.6rem 0 auto;
    align-items: stretch;
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 1rem 1rem;
    background: var(--midnight);
    border-bottom: 1px solid var(--gold);
  }
  .site-nav.open {
    display: flex;
  }
  .site-nav a {
    padding: 0.75rem;
  }
  .hero-grid,
  .tool-wrap,
  .giza-stage,
  .article-layout {
    grid-template-columns: 1fr;
  }
  .hero-grid {
    padding-top: 3.5rem;
    gap: 1rem;
  }
  .hero-figure {
    min-height: 22rem;
    place-items: center;
  }
  .result-panel,
  .article-aside {
    position: static;
  }
  .converter-page .result-panel {
    min-height: 35rem;
  }
  .grid-4,
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .theory-cards {
    grid-template-columns: 1fr;
  }
  .giza-controls {
    max-width: 42rem;
  }
  .selection-note {
    grid-template-columns: 1fr;
    align-items: start;
  }
  .temple-grid {
    grid-template-columns: 1fr;
  }
  .site-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .monument-metrics {
    grid-template-columns: 1fr;
  }
  .monument-metric {
    border-right: 0;
    border-bottom: 1px solid rgba(246, 241, 231, 0.14);
  }
  .monument-metric:last-child {
    border-bottom: 0;
  }
  .site-facts > div:nth-child(2) {
    border-right: 0;
  }
  .site-facts > div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 620px) {
  .brand-copy small {
    display: none;
  }
  .hero-grid {
    min-height: auto;
    padding: 1.9rem 0 1.25rem;
    gap: 0.3rem;
  }
  .hero-copy {
    display: contents;
  }
  .hero .kicker {
    margin-bottom: 0.45rem;
  }
  .hero h1 {
    margin-bottom: 0.35em;
    line-height: 0.93;
  }
  .hero .lede {
    font-size: clamp(1.1rem, 4.7vw, 1.22rem);
    line-height: 1.18;
  }
  .hero-figure {
    order: 1;
    min-height: 14rem;
  }
  .pyramid-orbit {
    width: min(22rem, 78vw);
  }
  .pyramid-profile .profile-labels {
    font-size: 12px;
  }
  .hero-actions {
    order: 2;
  }
  .measure-strip {
    bottom: 0;
  }
  .grid-2,
  .grid-3,
  .grid-4,
  .field-row,
  .formula-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .pyramid-results-head {
    flex-direction: column;
  }
  .section {
    padding: 2.75rem 0;
  }
  .page-hero-inner {
    padding: 2.25rem 0 1.8rem;
  }
  .data-table {
    display: block;
    overflow-x: auto;
  }
  .model-option span {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }
  .giza-reference-note {
    display: grid;
  }
  .giza-reference-note strong {
    text-align: left;
  }
  .temple-card {
    grid-template-columns: 5rem minmax(0, 1fr);
  }
  .temple-card-body {
    padding: 1rem;
  }
  .temple-detail {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }
  .feature-link {
    align-items: start;
    flex-direction: column;
  }
  .site-facts {
    grid-template-columns: 1fr;
  }
  .site-facts > div,
  .site-facts > div:nth-child(2) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .site-facts > div:last-child {
    border-bottom: 0;
  }
}

/* ========== 18. TEMPLE STUDY LEAD ====================================== */

/* Applied by the shared script to individual temple studies. The index and
   the Stonehenge replacement route deliberately do not receive this layout. */
.temple-study-page .article-layout {
  grid-template-columns: minmax(0, 1fr);
}

.temple-study-page .prose {
  align-items: start;
  column-gap: clamp(1.25rem, 3vw, 2.5rem);
  display: grid;
  grid-template-columns: minmax(14rem, 0.78fr) minmax(0, 1.72fr);
}

.temple-study-page .prose > * {
  grid-column: 1 / -1;
}

.temple-study-page .prose > .site-facts {
  align-self: stretch;
  box-shadow: none;
  display: grid;
  grid-column: 1;
  grid-row: 1;
  grid-template-columns: 1fr;
  grid-template-rows: repeat(4, minmax(0, 1fr));
  margin: 0;
  min-height: 0;
}

.temple-study-page .site-facts > div,
.temple-study-page .site-facts > div:nth-child(2) {
  border-bottom: 1px solid var(--line);
  border-right: 0;
  padding: 1rem;
}

.temple-study-page .site-facts > div:last-child {
  border-bottom: 0;
}

.temple-study-page .site-facts strong {
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.18;
}

.temple-study-page .prose > .monument-figure {
  align-self: start;
  grid-column: 2;
  grid-row: 1;
  margin: 0;
}

.temple-study-page .prose > .kit-pyramid-card {
  justify-self: center;
  max-width: 34rem;
  width: 100%;
}

.kit-pyramid-card {
  background: #0e1022;
  border: 1px solid rgba(212, 175, 55, 0.42);
  box-shadow: 0 16px 38px rgba(20, 22, 43, 0.16);
  color: #ece7d9;
  padding: 9px;
}

.kit-pyramid-card-inner {
  border: 1px solid rgba(163, 158, 196, 0.2);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: clamp(1rem, 2.2vw, 1.35rem);
}

.kit-pyramid-meta,
.kit-pyramid-measures {
  color: #8f89b3;
  display: flex;
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 600;
  justify-content: space-between;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.kit-pyramid-meta strong { color: #ecc56e; }

.kit-pyramid-graphic {
  align-items: center;
  display: flex;
  justify-content: center;
  padding: 0.6rem 0 0.25rem;
}

.kit-pyramid-graphic svg {
  display: block;
  height: auto;
  max-width: 19rem;
  width: min(100%, 19rem);
}

.kit-pyramid-graphic .kit-ring {
  fill: none;
  stroke: rgba(212, 169, 76, 0.18);
}

.kit-pyramid-graphic .kit-ticks {
  fill: none;
  stroke: rgba(212, 169, 76, 0.35);
}

.kit-pyramid-graphic .kit-inner-ring {
  fill: none;
  stroke: rgba(163, 158, 196, 0.2);
  stroke-dasharray: 2 6;
}

.kit-pyramid-graphic .kit-profile,
.kit-pyramid-graphic .kit-dimension {
  fill: none;
  stroke: #d4a94c;
  stroke-linejoin: round;
}

.kit-pyramid-graphic .kit-profile { stroke-width: 2.2; }
.kit-pyramid-graphic .kit-dimension { stroke-width: 1.2; }
.kit-pyramid-graphic .kit-axis { stroke: #8f89b3; stroke-dasharray: 3 5; }
.kit-pyramid-graphic text {
  fill: #8f89b3;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.09em;
}

.kit-pyramid-card h2 {
  color: #ece7d9;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.04;
  margin: 0.35rem 0 1rem;
}

.kit-pyramid-measures { gap: 0.75rem; }
.kit-pyramid-measures span { display: grid; gap: 0.25rem; }
.kit-pyramid-measures b { color: #ecc56e; font-size: 0.65rem; }

.kit-pyramid-card-footer {
  border-top: 1px solid rgba(163, 158, 196, 0.18);
  color: #c6bff0;
  font-family: var(--mono);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-top: 0.8rem;
  padding-top: 0.65rem;
  text-transform: uppercase;
}

.kit-pyramid-card-footer span {
  border: 1px solid rgba(143, 134, 201, 0.55);
  display: inline-block;
  padding: 0.25rem 0.45rem;
}

@media (max-width: 48rem) {
  .temple-study-page .prose {
    display: flex;
    flex-direction: column;
  }

  .temple-study-page .prose > .site-facts,
  .temple-study-page .prose > .monument-figure {
    align-self: auto;
    display: block;
    margin-bottom: 2rem;
    width: 100%;
  }

  .temple-study-page .site-facts > div,
  .temple-study-page .site-facts > div:nth-child(2) {
    padding: 1rem;
  }
}

/* ========== 15. PRIVACY-SAFE ANALYTICS CHOICE ============================ */

.analytics-choice {
  align-items: center;
  background: var(--midnight);
  border-top: 2px solid var(--gold);
  bottom: 0;
  box-shadow: 0 -10px 30px rgba(10, 12, 28, 0.24);
  color: var(--paper);
  display: flex;
  gap: 1.5rem;
  justify-content: space-between;
  left: 0;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  position: fixed;
  right: 0;
  z-index: 1000;
}

.analytics-choice strong {
  color: var(--gold);
  font-family: var(--serif);
  font-size: 1.15rem;
}

.analytics-choice p {
  margin: 0.3rem 0 0;
  max-width: 52rem;
}

.analytics-choice-actions {
  align-items: center;
  display: flex;
  flex: 0 0 auto;
  gap: 0.75rem;
}

.analytics-choice-actions .button {
  margin: 0;
  white-space: nowrap;
}

.analytics-choice-actions a {
  color: var(--paper);
  white-space: nowrap;
}

@media (max-width: 760px) {
  .analytics-choice {
    align-items: stretch;
    flex-direction: column;
    gap: 0.8rem;
  }

  .analytics-choice-actions {
    align-items: stretch;
    flex-wrap: wrap;
  }
}

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

/* ========== 12. PRINT ====================================================== */

@media print {
  .site-header,
  .site-footer,
  .hero-actions,
  .button,
  .nav-toggle {
    display: none !important;
  }
  body {
    color: black;
    background: white;
  }
  .page-hero,
  .hero,
  .result-panel {
    color: black;
    background: white;
  }
  .section {
    padding: 1rem 0;
  }
  a {
    color: black;
    text-decoration: none;
  }
}

/* ========== 13. UNIT CATALOGUE ===========================================
   Later v3 additions remain grouped here so they do not get lost among base
   component rules during a hand edit.
   ============================================================================ */
/* v3 three-converter unit catalogue */
.unit-catalogue-section + .unit-catalogue-section {
  margin-top: 4rem;
}
.unit-catalogue-section .section-head {
  margin-bottom: 1.5rem;
}
.unit-catalogue-section .section-head p:last-child {
  max-width: 48rem;
}
.temple-rank.unit-symbol {
  padding: 1.3rem 0.4rem 0;
  overflow-wrap: anywhere;
  text-align: center;
  font-size: clamp(0.78rem, 1.4vw, 1.15rem);
  line-height: 1.15;
}
@media (max-width: 620px) {
  .temple-rank.unit-symbol {
    padding-inline: 0.25rem;
    font-size: 0.75rem;
  }
}

/* ========== 14. TREASURE CALCULATOR ======================================
   Composition and optional user-priced melt value. These values must never
   be presented as historic purchasing power or collector value.
   ============================================================================ */
/* Treasure: composition, coinage and optional user-priced melt value. */
.treasure-hero {
  background-image:
    radial-gradient(
      circle at 82% 28%,
      rgba(212, 175, 55, 0.18),
      transparent 28%
    ),
    linear-gradient(135deg, var(--midnight), #20233f);
}
.treasure-tool {
  align-items: start;
}
.treasure-tool details {
  margin: 1rem 0 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  padding: 0.85rem 1rem;
  background: rgba(212, 175, 55, 0.055);
}
.treasure-tool summary {
  cursor: pointer;
  color: var(--ink-deep);
  font-weight: 750;
}
.treasure-tool .microcopy {
  margin: 0.65rem 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.treasure-result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  margin: 1rem 0 1.35rem;
}
.treasure-result-grid > div {
  min-height: 5.3rem;
  padding: 0.8rem;
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 0.35rem;
  background: rgba(255, 255, 255, 0.04);
}
.treasure-result-grid span {
  display: block;
  margin-bottom: 0.35rem;
  color: rgba(246, 241, 231, 0.68);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.treasure-result-grid strong {
  display: block;
  color: var(--parchment);
  font-family: var(--mono);
  font-size: clamp(0.92rem, 2vw, 1.15rem);
  line-height: 1.35;
}
.treasure-result-grid .treasure-value {
  grid-column: 1 / -1;
  border-color: rgba(212, 175, 55, 0.5);
}
.treasure-page [hidden] {
  display: none !important;
}
@media (max-width: 640px) {
  .treasure-result-grid {
    grid-template-columns: 1fr;
  }
  .treasure-result-grid .treasure-value {
    grid-column: auto;
  }
}

/* ========== 15. UNIT-DOSSIER SOURCE ENRICHMENT =========================== */
/* unit-enrichment-v1 */
.unit-enrichment {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line);
}
.unit-enrichment > h2:first-child {
  margin-top: 0;
}
.unit-source-quotes {
  display: grid;
  gap: 1rem;
  margin: 1.25rem 0;
}
.unit-source-quote {
  margin: 0;
  padding: 1rem 1.15rem;
  border-left: 3px solid var(--gold);
  background: var(--paper);
}
.unit-source-quote p {
  margin: 0 0 0.45rem;
  font-family: var(--serif);
  font-size: 1.16rem;
  line-height: 1.35;
}
.unit-source-quote cite {
  display: block;
  font-size: 0.86rem;
  font-style: normal;
  color: var(--muted);
}
.unit-source-quote cite span {
  color: var(--ink);
}
.unit-source-gap,
.unit-quote-intro {
  padding: 0.85rem 1rem;
  background: var(--paper);
  border-left: 3px solid var(--slate);
  font-size: 0.95rem;
}

/* ========== V5 UNIT STORY SYSTEM ========== */

.unit-story-strip {
  position: relative;
  z-index: 2;
  margin-top: -1px;
  background: var(--paper);
}

.unit-story-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transform: translateY(1.5rem);
}

.unit-story-grid > div {
  min-width: 0;
  padding: 1rem 1.1rem;
  border-right: 1px solid var(--line);
}

.unit-story-grid > div:last-child {
  border-right: 0;
}

.unit-story-grid span,
.unit-story-grid small {
  display: block;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-deep);
}

.unit-story-grid strong {
  display: block;
  margin-top: .3rem;
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.2;
}

.unit-story-grid small {
  margin-top: .35rem;
  color: var(--muted);
  letter-spacing: .04em;
  text-transform: none;
}

.unit-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(18rem, .95fr);
  gap: 2rem;
  margin: 2rem 0 3rem;
  padding: 1.5rem;
  color: var(--parchment);
  background: var(--midnight);
  border: 1px solid color-mix(in srgb, var(--gold) 48%, transparent);
}

.unit-spotlight h2 {
  margin-top: .25rem;
  color: var(--parchment);
}

.unit-spotlight p,
.unit-spotlight a {
  color: color-mix(in srgb, var(--parchment) 86%, transparent);
}

.unit-spotlight a {
  text-decoration-color: var(--gold);
}

.unit-spotlight .eyebrow {
  color: var(--gold);
}

.unit-basis-line {
  padding-top: .9rem;
  border-top: 1px solid color-mix(in srgb, var(--gold) 32%, transparent);
  font-size: .92rem;
}

.unit-relation-list {
  display: grid;
  gap: .45rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.unit-relation-list li {
  display: grid;
  grid-template-columns: 4.5rem 1fr auto;
  gap: .7rem;
  align-items: baseline;
  padding: .5rem 0;
  border-top: 1px solid color-mix(in srgb, var(--parchment) 14%, transparent);
}

.unit-relation-list span {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--slate-blue);
}

.unit-relation-list strong {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--gold);
}

.unit-no-peer {
  margin-top: 1rem;
  font-size: .9rem;
  color: var(--muted);
}

.unit-infographic {
  margin: 0;
  align-self: stretch;
  background:
    radial-gradient(circle at center, color-mix(in srgb, var(--slate-blue) 14%, transparent), transparent 65%),
    repeating-radial-gradient(circle at center, transparent 0 38px, color-mix(in srgb, var(--gold) 12%, transparent) 39px 40px);
  border: 1px solid color-mix(in srgb, var(--gold) 30%, transparent);
}

.unit-infographic figcaption {
  padding: .75rem 1rem 1rem;
  font-size: .82rem;
  line-height: 1.45;
  color: color-mix(in srgb, var(--parchment) 72%, transparent);
}

.unit-viz {
  display: block;
  width: 100%;
  height: auto;
  min-height: 16rem;
}

.unit-viz-grid,
.unit-viz-primary,
.unit-viz-cycle {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.unit-viz-grid {
  stroke: color-mix(in srgb, var(--slate-blue) 54%, transparent);
  stroke-width: 1;
}

.unit-viz-primary,
.unit-viz-cycle {
  stroke: var(--gold);
  stroke-width: 3;
}

.unit-viz-cycle {
  transform: rotate(-90deg);
  transform-origin: 320px 142px;
  stroke-linecap: round;
}

.unit-viz-point,
.unit-viz-fill {
  fill: var(--gold);
}

.unit-viz-area {
  fill: color-mix(in srgb, var(--slate-blue) 58%, transparent);
  stroke: var(--slate-blue);
}

.unit-viz-ghost {
  fill: color-mix(in srgb, var(--parchment) 10%, transparent);
  stroke: var(--slate-blue);
}

.unit-viz-label,
.unit-viz-note {
  font-family: var(--mono);
  fill: var(--parchment);
}

.unit-viz-label {
  font-size: 16px;
  font-weight: 600;
}

.unit-viz-note {
  font-size: 12px;
  fill: color-mix(in srgb, var(--parchment) 66%, transparent);
}

.unit-viz-centre {
  text-anchor: middle;
}

@media (max-width: 760px) {
  .unit-story-grid {
    grid-template-columns: 1fr 1fr;
  }

  .unit-story-grid > div:nth-child(2) {
    border-right: 0;
  }

  .unit-story-grid > div:nth-child(-n+2) {
    border-bottom: 1px solid var(--line);
  }

  .unit-spotlight {
    grid-template-columns: 1fr;
    padding: 1.1rem;
  }

  .unit-relation-list li {
    grid-template-columns: 4.5rem 1fr;
  }

  .unit-relation-list strong {
    grid-column: 2;
  }
}

@media (max-width: 430px) {
  .unit-story-grid {
    grid-template-columns: 1fr;
    transform: translateY(1rem);
  }

  .unit-story-grid > div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .unit-story-grid > div:last-child {
    border-bottom: 0;
  }
}


/* ========== V5 AUTHORSHIP AND CONTACT ==================================== */

.author-card {
  margin: 2rem 0 2.4rem;
  padding: clamp(1.35rem, 4vw, 2.25rem);
  border: 1px solid rgba(212, 175, 55, 0.52);
  border-top: 3px solid var(--gold);
  border-radius: 0.55rem;
  color: rgba(246, 241, 231, 0.84);
  background: linear-gradient(135deg, #14162b, #20233f);
  box-shadow: var(--shadow);
}
.author-card h2 {
  margin-top: 0.35rem;
  color: var(--parchment);
}
.author-card .eyebrow {
  margin-bottom: 0.45rem;
  color: var(--gold);
}
.author-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}
.author-card .button {
  text-decoration: none;
}
.linkedin-button svg {
  width: 1.05rem;
  height: 1.05rem;
}
@media (max-width: 480px) {
  .author-card-actions .button {
    width: 100%;
  }
}

/* v7 primary information architecture ----------------------------------- */
.site-nav {
  align-items: stretch;
  gap: 0.3rem;
}

.site-nav .nav-tool,
.nav-library-link {
  align-items: center;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.05;
  min-height: 3.15rem;
  min-width: 4.8rem;
  padding: 0.45rem 0.55rem;
  text-align: center;
}

.nav-library {
  position: relative;
}

.nav-library-link {
  color: inherit;
  text-decoration: none;
}

.nav-library-link:hover,
.nav-library-link:focus-visible,
.nav-library-link[aria-current="page"] {
  color: var(--accent);
}

.nav-library-menu {
  background: var(--ink-deep);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, transparent);
  box-shadow: 0 1rem 2rem rgb(0 0 0 / 28%);
  display: none;
  gap: 0.2rem;
  min-width: 17rem;
  padding: 0.55rem;
  position: absolute;
  right: 0;
  top: calc(100% + 0.2rem);
  z-index: 20;
}

.nav-library:hover .nav-library-menu,
.nav-library:focus-within .nav-library-menu {
  display: grid;
}

.nav-library-menu a {
  display: block;
  padding: 0.52rem 0.65rem;
  text-align: left;
}

.nav-library-menu .nav-library-heading {
  color: var(--accent);
  font-weight: 700;
}

.nav-library-group {
  border-bottom: 1px solid rgb(255 255 255 / 14%);
  display: grid;
  padding-bottom: 0.35rem;
}

.nav-library-group a:not(.nav-library-heading) {
  font-size: 0.82rem;
  padding-left: 1.1rem;
}

@media (max-width: 1180px) {
  .site-nav .nav-tool,
  .nav-library-link {
    min-width: 4.2rem;
    padding-inline: 0.35rem;
  }
}

@media (max-width: 760px) {
  .site-nav {
    align-items: stretch;
    gap: 0;
  }

  .site-nav .nav-tool,
  .nav-library-link {
    align-items: flex-start;
    flex-direction: row;
    gap: 0.28rem;
    justify-content: flex-start;
    min-height: 0;
    padding: 0.75rem 1rem;
    width: 100%;
  }

  .nav-library-menu {
    background: transparent;
    border: 0;
    box-shadow: none;
    display: grid;
    min-width: 0;
    padding: 0 0 0.7rem 0.75rem;
    position: static;
  }

  .nav-library-menu a {
    padding-block: 0.42rem;
  }
}

/* v7 Study Library index-card alignment fix ---------------------------- */
.library-index-grid .temple-card {
  position: relative;
  grid-template-columns: minmax(0, 1fr);
  min-height: 14rem;
}

.library-index-grid .temple-card-body {
  grid-column: 1;
  min-width: 0;
  width: 100%;
  /* Keep every card heading below the absolute badge, at every breakpoint. */
  padding-top: 3.7rem;
}

.library-index-grid .badge {
  position: absolute;
  top: 1.3rem;
  right: 1.4rem;
}

.library-index-grid .temple-summary {
  max-width: 42ch;
}

@media (max-width: 760px) {
  .library-index-grid .temple-card {
    min-height: 0;
  }
}



/* ========== 14. BUILD LOG TIMELINE ======================================== */

.blog-entry-count {
  color: var(--gold-dark);
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  margin: -0.5rem 0 0;
  text-transform: uppercase;
}

.build-log-timeline {
  max-width: 58rem;
  padding-bottom: 1rem;
  position: relative;
}

.build-log-timeline::before {
  background: linear-gradient(var(--gold), var(--aged-gold));
  bottom: 1rem;
  content: "";
  left: 2rem;
  position: absolute;
  top: 0;
  width: 2px;
}

.timeline-entry {
  display: grid;
  gap: 1.1rem;
  grid-template-columns: 4rem minmax(0, 1fr);
  margin-bottom: 1.5rem;
  position: relative;
}

.timeline-marker {
  align-items: center;
  background: var(--midnight);
  border: 2px solid var(--gold);
  border-radius: 50%;
  color: var(--gold);
  display: flex;
  font-size: 1.1rem;
  height: 4rem;
  justify-content: center;
  position: relative;
  width: 4rem;
  z-index: 1;
}

.timeline-card {
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: 0 10px 30px rgba(20, 22, 43, 0.08);
  padding: 1.45rem 1.55rem;
}

.timeline-card h2 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.05;
  margin: 0 0 0.55rem;
}

.timeline-card h2 a {
  color: var(--ink-deep);
  text-decoration: none;
}

.timeline-card h2 a:hover,
.timeline-card h2 a:focus-visible {
  color: var(--oxblood);
}

.timeline-card p {
  color: var(--muted);
  margin-bottom: 0.8rem;
}

.timeline-date {
  color: var(--gold-dark) !important;
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin: 0 0 0.45rem !important;
  text-transform: uppercase;
}

.timeline-link {
  font-weight: 700;
  text-decoration-thickness: 1px;
}

@media (max-width: 620px) {
  .build-log-timeline::before {
    left: 1.25rem;
  }

  .timeline-entry {
    gap: 0.8rem;
    grid-template-columns: 2.5rem minmax(0, 1fr);
  }

  .timeline-marker {
    font-size: 0.85rem;
    height: 2.5rem;
    width: 2.5rem;
  }

  .timeline-card {
    padding: 1.15rem;
  }
}
/* ========== 23. ARTICLE PROGRAMME EVIDENCE COMPONENTS ================== */

.fn-ref {
  font-family: var(--mono);
  font-size: 0.68em;
  line-height: 0;
  white-space: nowrap;
}

.fn-ref a {
  color: var(--gold-dark);
  text-decoration: none;
}

.fn-ref a:hover,
.fn-ref a:focus-visible {
  color: var(--oxblood);
  text-decoration: underline;
}

.source-list li:target {
  background: var(--paper);
  border-left: 3px solid var(--gold);
  padding: 0.55rem 0.75rem;
}

blockquote.pull {
  background: var(--paper);
  border-left: 4px solid var(--gold);
  color: var(--ink-deep);
  font-family: var(--serif);
  font-size: 1.2rem;
  font-style: italic;
  margin: 2rem 0;
  padding: 1.25rem 1.5rem;
}

blockquote.pull footer {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-style: normal;
}

.evidence-box {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 5px solid var(--slate);
  margin: 2rem 0;
  padding: clamp(1.1rem, 3vw, 1.75rem);
}

.evidence-box-gap {
  border-left-color: var(--oxblood);
}

.evidence-box h2 {
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  margin: 0.2rem 0 0.75rem;
}

.dual-scale-bar {
  background: var(--ink-deep);
  border: 1px solid var(--gold);
  color: var(--parchment);
  margin: 2rem 0;
  padding: clamp(1rem, 3vw, 1.6rem);
}

.dual-scale-bar figcaption {
  margin-bottom: 1.25rem;
}

.dual-scale-axis {
  display: grid;
  gap: 0.75rem;
}

.dual-scale-row {
  align-items: center;
  display: grid;
  font-family: var(--mono);
  font-size: 0.72rem;
  gap: 0.75rem;
  grid-template-columns: auto minmax(0, 1fr) auto;
}

.dual-scale-row b {
  border: 2px solid var(--gold);
  color: var(--parchment);
  padding: 0.65rem 0.8rem;
  text-align: center;
}

.dual-scale-row-metric b {
  border-color: var(--slate);
  border-style: dashed;
}

.dual-scale-note {
  color: var(--parchment);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  margin: 1rem 0 0;
  text-transform: uppercase;
}

.dimension-table {
  background: var(--paper);
  border: 1px solid var(--line);
  box-sizing: border-box;
  margin: 2rem 0;
  max-width: 100%;
  padding: 0.35rem 0.8rem 0.8rem;
  width: 100%;
}

.dimension-table caption {
  color: var(--ink-deep);
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
  padding: 0.8rem 0;
  text-align: left;
}

.stadion-track-model .monument-diagram {
  background: var(--ink-deep);
}

.am-temple-plan {
  margin-block: 2rem;
}

.am-pyramid-set,
.am-temple-section {
  margin-block: 2rem;
}

.am-pyramid-set .monument-diagram svg,
.am-temple-section .monument-diagram svg {
  display: block;
  height: auto;
  max-width: 100%;
}

.stadion-track-model .monument-diagram svg {
  display: block;
  margin: 0 auto;
}

@media (prefers-color-scheme: dark) {
  .evidence-box,
  .dimension-table,
  blockquote.pull,
  .source-list li:target {
    background: var(--midnight-2);
    color: var(--parchment);
  }

  .evidence-box h2,
  .dimension-table caption {
    color: var(--parchment);
  }
}

@media (max-width: 30rem) {
  .dual-scale-row {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .dual-scale-row > span {
    display: none;
  }

  .dimension-table {
    padding-inline: 0.35rem;
  }
}