:root {
  --ink: #172126;
  --ink-2: #26373d;
  --paper: #f8f5ec;
  --surface: #fffdf7;
  --line: #d7cdb9;
  --lapis: #245c73;
  --cypress: #3e6b57;
  --pomegranate: #9b2f3d;
  --copper: #b66a35;
  --gold: #d7a842;
  --muted: #667078;
  --shadow: 0 18px 55px rgba(23, 33, 38, 0.14);
  --radius: 8px;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(36, 92, 115, 0.08), transparent 28%, rgba(155, 47, 61, 0.06)),
    var(--paper);
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
}

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

.skip-link {
  position: absolute;
  inset-inline-start: 1rem;
  inset-block-start: 0.5rem;
  transform: translateY(-150%);
  background: var(--ink);
  color: white;
  padding: 0.5rem 0.75rem;
  z-index: 20;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem clamp(1rem, 4vw, 3rem);
  background: rgba(248, 245, 236, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1rem, 2vw, 1.25rem);
  text-decoration: none;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  border: 2px solid var(--lapis);
  background:
    linear-gradient(45deg, transparent 43%, var(--gold) 44%, var(--gold) 56%, transparent 57%),
    linear-gradient(-45deg, transparent 43%, var(--cypress) 44%, var(--cypress) 56%, transparent 57%);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav a,
.button,
.nav-toggle,
.track-filters button,
.atlas-layer button {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.58rem 0.8rem;
  text-decoration: none;
  color: var(--ink);
  background: transparent;
  font: inherit;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"],
.track-filters button:hover,
.track-filters button:focus-visible,
.track-filters button.is-active {
  border-color: var(--lapis);
  background: rgba(36, 92, 115, 0.1);
}

.nav-toggle {
  display: none;
  border-color: var(--line);
}

.home-hero,
.era-hero,
.page-hero {
  min-height: min(760px, calc(100vh - 64px));
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(360px, 1.18fr);
  align-items: center;
  gap: clamp(1.4rem, 4vw, 4rem);
  padding: clamp(2rem, 6vw, 5rem) clamp(1rem, 5vw, 5rem);
  border-bottom: 1px solid var(--line);
}

.era-hero,
.page-hero {
  min-height: auto;
  grid-template-columns: minmax(0, 760px);
  background: linear-gradient(135deg, rgba(62, 107, 87, 0.12), rgba(215, 168, 66, 0.08));
}

.hero-copy,
.section,
.site-footer {
  max-width: 1180px;
  margin: 0 auto;
}

h1,
h2,
h3 {
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.1;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 500;
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 3.4rem);
  font-weight: 500;
}

h3 {
  margin: 1.25rem 0 0.4rem;
  font-size: clamp(1.2rem, 2vw, 1.55rem);
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--pomegranate);
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.08em;
}

.lede {
  max-width: 62ch;
  font-size: clamp(1.18rem, 2vw, 1.55rem);
  color: var(--ink-2);
}

.hero-actions,
.meta-row,
.status-strip,
.control-bar,
.key-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-color: var(--line);
  background: var(--surface);
  box-shadow: 0 4px 18px rgba(23, 33, 38, 0.08);
}

.button.primary {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}

.hero-visual,
.atlas-map,
.road-stage {
  border: 1px solid rgba(23, 33, 38, 0.18);
  background: var(--ink);
  box-shadow: var(--shadow);
}

.section {
  padding: clamp(2rem, 6vw, 5rem) clamp(1rem, 4vw, 2rem);
}

.section + .section {
  border-top: 1px solid rgba(215, 205, 185, 0.82);
}

.section-heading {
  max-width: 850px;
}

.status-strip {
  justify-content: center;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}

.status-strip span,
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.22rem 0.6rem;
  background: rgba(255, 253, 247, 0.82);
  font-size: 0.83rem;
  font-weight: 650;
}

.badge-provisional,
.badge-queued {
  color: #703f00;
  background: #fff1ca;
  border-color: #e7c56b;
}

.badge-verified {
  color: #104b35;
  background: #dff3e8;
  border-color: #9acfb5;
}

.badge-status {
  color: var(--lapis);
  border-color: rgba(36, 92, 115, 0.35);
}

.era-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.7rem;
  padding: 0;
  margin: 2rem 0 0;
}

.era-tile {
  min-height: 172px;
  display: grid;
  align-content: space-between;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.era-tile:hover,
.era-tile:focus-visible {
  transform: translateY(-2px);
  border-color: var(--lapis);
  box-shadow: 0 12px 28px rgba(23, 33, 38, 0.12);
}

.era-order {
  color: var(--pomegranate);
  font-weight: 800;
}

.era-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.18rem;
  line-height: 1.2;
}

.era-dates,
.muted,
.module-note {
  color: var(--muted);
  font-size: 0.94rem;
}

.timeline-module {
  max-width: none;
}

.timeline-module > * {
  max-width: 1180px;
  margin-inline: auto;
}

.control-bar {
  margin: 1.5rem auto;
}

.timeline-search,
.site-search {
  width: min(100%, 420px);
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.65rem 0.85rem;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}

.track-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.timeline-board {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.74);
}

.timeline-row,
.timeline-axis {
  min-width: 1250px;
  display: grid;
  grid-template-columns: 130px minmax(1120px, 1fr);
  border-bottom: 1px solid rgba(215, 205, 185, 0.75);
}

.timeline-row:last-child {
  border-bottom: 0;
}

.timeline-track-label {
  padding: 0.8rem;
  color: var(--muted);
  text-transform: capitalize;
  font-weight: 700;
}

.timeline-lane {
  position: relative;
  min-height: 92px;
  border-inline-start: 1px solid rgba(215, 205, 185, 0.75);
}

.timeline-axis-lane {
  position: relative;
  min-height: 52px;
  border-inline-start: 1px solid rgba(215, 205, 185, 0.75);
}

.axis-tick {
  position: absolute;
  inset-block-start: 0.7rem;
  inset-inline-start: calc(var(--x) * 1%);
  color: var(--muted);
  font-size: 0.76rem;
}

.axis-tick::before {
  content: "";
  position: absolute;
  inset-block-start: -0.55rem;
  inset-inline-start: 50%;
  width: 1px;
  height: 0.55rem;
  background: rgba(102, 112, 120, 0.55);
}

.axis-tick span {
  display: block;
  transform: translateX(-50%);
  white-space: nowrap;
}

.timeline-item,
.timeline-band {
  position: absolute;
  text-decoration: none;
  color: var(--ink);
}

.timeline-item {
  inset-block-start: calc(var(--lane-row) * 68px + 12px);
  inset-inline-start: calc(var(--x) * 1%);
  width: min(15rem, 15%);
  padding-inline-start: 14px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: 0.35rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--pomegranate);
}

.timeline-item span,
.timeline-band span {
  display: block;
  font-size: 0.8rem;
  line-height: 1.2;
}

.timeline-item small {
  color: var(--muted);
  font-size: 0.72rem;
}

.timeline-band {
  inset-block-start: calc(var(--event-rows) * 68px + var(--lane-row) * 30px + 12px);
  inset-inline-start: calc(var(--x) * 1%);
  width: calc(var(--w) * 1%);
  min-width: 56px;
  height: 20px;
  border-radius: 999px;
  padding: 0 0.45rem;
  background: rgba(36, 92, 115, 0.28);
  border: 1px solid rgba(36, 92, 115, 0.45);
  overflow: hidden;
  white-space: nowrap;
}

[dir="rtl"] .timeline-item,
[dir="rtl"] .timeline-band {
  inset-inline-start: auto;
  inset-inline-end: calc(var(--x) * 1%);
}

[dir="rtl"] .axis-tick {
  inset-inline-start: auto;
  inset-inline-end: calc(var(--x) * 1%);
}

.uncertainty-approx,
.uncertainty-range {
  filter: saturate(0.82);
}

.uncertainty-disputed {
  outline: 2px dashed var(--pomegranate);
  outline-offset: 2px;
}

.atlas-layout,
.interaction-layout,
.evidence-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: clamp(1rem, 3vw, 2rem);
  align-items: start;
}

.atlas-svg {
  display: block;
  width: 100%;
  min-height: 360px;
}

.svg-region {
  fill: rgba(255, 253, 247, 0.74);
  font: 700 18px system-ui;
}

.map-node circle {
  fill: var(--gold);
  stroke: var(--ink);
  stroke-width: 2;
}

.map-node.is-focus circle {
  fill: var(--pomegranate);
  stroke: white;
}

.map-node text {
  fill: #fffdf7;
  font: 700 15px system-ui;
  paint-order: stroke;
  stroke: rgba(23, 33, 38, 0.8);
  stroke-width: 3px;
}

.map-place-list {
  margin-block-start: 0.85rem;
  border: 1px solid rgba(215, 205, 185, 0.75);
  border-radius: var(--radius);
  background: rgba(255, 253, 247, 0.82);
  padding: 0.85rem;
}

.map-place-list h3 {
  margin-block: 0 0.45rem;
  font-size: 0.95rem;
}

.map-place-list ul,
.connection-group ul {
  display: grid;
  gap: 0.45rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.map-place-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: 0.86rem;
}

.map-place-list li:target,
.connection-group li:target {
  outline: 3px solid var(--pomegranate);
  outline-offset: 3px;
  border-radius: var(--radius);
}

.atlas-layer {
  border-bottom: 1px solid var(--line);
}

.atlas-layer button {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  border-radius: 0;
  border-bottom: 0;
}

.layer-detail {
  display: none;
  padding: 0 0.8rem 1rem;
}

.atlas-layer.is-active .layer-detail {
  display: block;
}

.narrative {
  max-width: 860px;
}

.narrative p,
.narrative li,
.narrative blockquote {
  font-size: 1.05rem;
}

.narrative blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border-inline-start: 4px solid var(--pomegranate);
  background: rgba(155, 47, 61, 0.08);
}

.road-stage {
  padding: 1rem;
}

.road-stage svg {
  display: block;
  width: 100%;
}

.road-path {
  fill: none;
  stroke: var(--gold);
  stroke-width: 12;
  stroke-linecap: round;
  stroke-dasharray: 16 18;
}

.road-node circle {
  fill: #fffdf7;
  stroke: var(--pomegranate);
  stroke-width: 4;
}

.road-node.gap circle {
  fill: var(--gold);
  stroke-dasharray: 4 5;
}

.road-node text {
  fill: white;
  font: 700 18px system-ui;
}

.relay-pulses circle {
  fill: var(--pomegranate);
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(0.8); opacity: 0.25; }
  50% { transform: scale(1.6); opacity: 0.9; }
}

.interaction-panel,
.source-card,
.evidence-card,
.search-result {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem;
}

.interaction-panel label,
.interaction-panel fieldset {
  display: grid;
  gap: 0.45rem;
  margin: 1rem 0;
}

.interaction-panel input[type="range"] {
  width: 100%;
}

.road-output {
  display: block;
  min-height: 56px;
  border: 1px solid rgba(62, 107, 87, 0.35);
  border-radius: var(--radius);
  padding: 0.8rem;
  background: rgba(62, 107, 87, 0.09);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border: 1px solid var(--line);
  padding: 0.55rem;
  vertical-align: top;
}

.evidence-grid,
.sense-grid,
.connection-grid,
.bibliography-list,
.search-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.connection-group {
  border-block-start: 2px solid var(--line);
  padding-block-start: 0.75rem;
}

.connection-group li {
  border: 1px solid rgba(215, 205, 185, 0.75);
  border-radius: var(--radius);
  padding: 0.75rem;
  background: rgba(255, 253, 247, 0.7);
}

.connection-group p {
  margin-block: 0.35rem 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.card-kicker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 750;
  text-transform: uppercase;
}

.source-card h3,
.search-result h3 {
  margin-top: 0.4rem;
}

.media-locked {
  background: linear-gradient(135deg, #fffdf7, #fff3d1);
}

.cite-button {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(36, 92, 115, 0.08);
  color: var(--lapis);
  padding: 0.25rem 0.55rem;
  font: inherit;
  cursor: pointer;
}

.citation-popover {
  position: absolute;
  z-index: 30;
  width: min(320px, calc(100vw - 2rem));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 0.8rem;
  display: none;
}

.citation-popover.is-visible {
  display: block;
}

.citation-popover-header {
  display: flex;
  justify-content: flex-end;
}

.citation-popover-close {
  min-width: 34px;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(36, 92, 115, 0.08);
  color: var(--ink);
  cursor: pointer;
}

.text-link {
  color: var(--lapis);
  font-weight: 800;
}

.key {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.5rem 0.7rem;
  background: var(--surface);
}

.site-footer {
  padding: 2rem clamp(1rem, 4vw, 2rem);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

:focus-visible {
  outline: 3px solid var(--pomegranate);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

@media (max-width: 840px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    inset-inline: 1rem;
    inset-block-start: calc(100% + 0.5rem);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.6rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
  }

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

  .home-hero,
  .atlas-layout,
  .interaction-layout,
  .evidence-grid {
    grid-template-columns: 1fr;
  }

  .home-hero {
    min-height: auto;
    padding-top: 2rem;
  }

  .hero-visual {
    order: -1;
  }

  .timeline-row {
    grid-template-columns: 96px 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}