:root {
  color-scheme: light;
  --page: rgb(255, 253, 249);
  --surface-soft: #f1f2ef;
  --ink: #20282d;
  --ink-soft: #39414d;
  --secondary: #6d6d6d;
  --line: #d1d1d1;
  --line-strong: #9f9f9f;
  --accent: #2f5f7f;
  --accent-soft: #d1dfe4;
  --gray-blue: #abb8c3;
  --current: #0f766e;
  --danger: #a12a2a;
  --danger-soft: #ead0d0;
  --label-width: 190px;
  --axis-height: 64px;
  --row-height: 62px;
  --region-height: 34px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-weight: 400;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

button,
select,
input {
  font: inherit;
}

button,
select,
a,
input {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent);
}

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

#detail-title:focus {
  outline: none;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  transform: translateY(-180%);
  padding: 0.65rem 0.9rem;
  border-radius: 0;
  background: var(--ink);
  color: var(--page);
}

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

.site-header {
  position: relative;
  z-index: 40;
  height: 53px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 17px;
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
}

.dp-navbar-brand {
  color: var(--ink);
  font-weight: 400;
  text-decoration: none;
  text-transform: uppercase;
}

.dp-navbar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.site-header nav a {
  color: var(--secondary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.site-header nav a:hover,
.site-header nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: currentColor;
}

.dp-navbar-menu {
  display: none;
}

.dp-project-header {
  width: min(1480px, calc(100% - 34px));
  margin: 0 auto;
  padding: 14px 0 18px;
}

.dp-project-header h1,
.dp-project-header .project-name {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-size: inherit;
  text-decoration: none;
}

.wordmark img {
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .dp-navbar-links {
    display: none;
  }


  .dp-navbar-menu {
    position: relative;
    display: block;
  }

  .dp-navbar-menu summary {
    width: 36px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    list-style: none;
    cursor: pointer;
    border: 1px solid var(--line);
  }

  .dp-navbar-menu summary::-webkit-details-marker {
    display: none;
  }

  .dp-navbar-menu nav {
    position: absolute;
    z-index: 1;
    top: calc(100% + 4px);
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 160px;
    padding: 12px 16px;
    background: var(--page);
    border: 1px solid var(--line);
  }
}

main {
  overflow: clip;
}

.explorer,
footer {
  width: min(1480px, calc(100% - 34px));
  margin-inline: auto;
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--secondary);
  font-size: 0.76rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.1;
}

h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(2.1rem, 4.5vw, 4.6rem);
}

h2 {
  margin: 0;
  font-size: clamp(1.35rem, 2vw, 1.8rem);
}

h3 {
  margin: 0.2rem 0 0.5rem;
  font-size: 1.2rem;
}


.explorer {
  padding: 0 0 38px;
}



select {
  width: 100%;
  min-height: 42px;
  padding: 0 36px 0 11px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--page);
  color: var(--ink);
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
}

.story-jumps {
  margin: 4px 0 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-soft);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.story-jumps > div {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.preset-button {
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--page);
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 400;
}

.preset-button:hover,
.preset-button[aria-pressed="true"] {
  border-color: var(--gray-blue);
  background: var(--accent-soft);
  color: var(--ink);
}

.snapshot-control {
  display: grid;
  grid-template-columns: auto minmax(160px, 1fr) auto;
  gap: 24px;
  align-items: center;
  margin: 16px 0 4px;
}

.snapshot-title {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 1.35rem;
  white-space: nowrap;
}

#snapshot-year-output {
  min-width: 5.2em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

#snapshot-year {
  width: 100%;
  accent-color: var(--accent);
}

#snapshot-summary {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.error-message {
  margin: 1rem 0;
  padding: 1rem;
  border-left: 4px solid var(--danger);
  background: var(--danger-soft);
}

.desktop-timeline {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--page) 70%, transparent);
}

.sticky-ruler {
  position: sticky;
  z-index: 20;
  top: 64px;
  height: 0;
  display: grid;
  grid-template-columns: var(--label-width) minmax(0, 1fr);
  pointer-events: none;
}

.sticky-ruler-label,
.sticky-ruler-window {
  height: var(--axis-height);
  border-bottom: 1px solid var(--line-strong);
  background: var(--page);
}

.sticky-ruler-label {
  padding: 0 12px 12px;
  display: flex;
  align-items: flex-end;
  border-right: 1px solid var(--line-strong);
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sticky-ruler-window {
  overflow: hidden;
}

.sticky-axis-layer {
  position: relative;
  height: var(--axis-height);
  will-change: transform;
}

.timeline-grid {
  display: grid;
  grid-template-columns: var(--label-width) minmax(0, 1fr);
  min-height: 0;
}

.label-column {
  position: relative;
  z-index: 6;
  padding-top: var(--axis-height);
  border-right: 1px solid var(--line-strong);
  background: var(--page);
}

.label-row,
.label-region {
  padding: 0 12px;
  display: flex;
  align-items: center;
}

.label-row {
  height: var(--row-height);
  border-top: 1px solid color-mix(in srgb, var(--line) 62%, transparent);
}

.label-row button {
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  line-height: 1.15;
  font-weight: 400;
}

.label-row button:hover,
.label-row button[aria-pressed="true"] {
  color: var(--accent);
}

.label-row small {
  display: block;
  margin-top: 4px;
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 500;
}

.label-row .current-indicator small::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-left: 6px;
  border-radius: 50%;
  background: var(--current);
  vertical-align: 0.02em;
}

.label-region {
  width: 100%;
  height: var(--region-height);
  gap: 6px;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
  line-height: 1.15;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.plot-scroller {
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-color: var(--line-strong) var(--surface-soft);
  scrollbar-width: auto;
}

.plot-canvas {
  position: relative;
  min-width: 100%;
}

.axis-layer {
  position: absolute;
  z-index: 5;
  inset: 0 0 auto;
  height: var(--axis-height);
  border-bottom: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--page) 92%, transparent);
}

.axis-tick {
  position: absolute;
  bottom: 0;
  height: 100%;
  border-left: 1px solid var(--line);
}

.axis-tick span {
  position: absolute;
  bottom: 12px;
  left: 7px;
  color: var(--ink-soft);
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.lane-layer {
  position: absolute;
  inset: var(--axis-height) 0 auto;
}

.plot-region {
  position: absolute;
  left: 0;
  right: 0;
  height: var(--region-height);
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface-soft) 52%, transparent);
}

.plot-row {
  position: absolute;
  left: 0;
  right: 0;
  height: var(--row-height);
  border-top: 1px solid color-mix(in srgb, var(--line) 62%, transparent);
}

.phase-segment,
.rule-segment,
.reign-mark,
.relationship-button {
  position: absolute;
  margin: 0;
  cursor: pointer;
}

.phase-segment {
  z-index: 1;
  top: 8px;
  height: 24px;
  min-width: 3px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line-strong);
}

.phase-segment.current {
  background: color-mix(in srgb, var(--current) 10%, var(--surface-soft));
}

.rule-segment {
  z-index: 2;
  top: 11px;
  height: 18px;
  min-width: 2px;
  overflow: hidden;
  padding: 0;
  border: 0;
  border-left: 3px solid var(--house-color);
  border-radius: 0;
  padding-left: 5px;
  background: color-mix(in srgb, var(--house-color) 34%, var(--page));
  color: var(--ink);
  text-overflow: ellipsis;
  font-size: 0.65rem;
  font-weight: 400;
  line-height: 18px;
  text-align: left;
  white-space: nowrap;
}

.reign-duration {
  position: absolute;
  z-index: 2;
  top: 40px;
  height: 2px;
  min-width: 2px;
  background: var(--ink-soft);
  opacity: 0.55;
}

.reign-mark {
  z-index: 4;
  top: 35px;
  width: 11px;
  height: 11px;
  padding: 0;
  transform: translateX(-50%);
  border: 2px solid var(--page);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 1px var(--line-strong);
}

.reign-mark.importance-3 {
  width: 13px;
  height: 13px;
  top: 34px;
  background: var(--accent);
}

.reign-label {
  position: absolute;
  z-index: 3;
  top: 49px;
  transform: translateX(-50%);
  color: var(--ink-soft);
  font-size: 0.64rem;
  line-height: 1;
  pointer-events: none;
  white-space: nowrap;
}

.relationship-layer {
  position: absolute;
  z-index: 3;
  top: var(--axis-height);
  left: 0;
  overflow: visible;
  pointer-events: none;
}

.relationship-layer path {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.4;
  opacity: 0.6;
  vector-effect: non-scaling-stroke;
}

.relationship-layer .personal_union,
.relationship-layer .dynastic_union,
.relationship-layer .composite_monarchy,
.relationship-layer .union_framework {
  stroke-dasharray: 5 4;
}

.relationship-layer .partition,
.relationship-layer .conquest,
.relationship-layer .dissolution {
  stroke: var(--ink-soft);
  stroke-dasharray: 2 4;
}

.relationship-layer .restoration {
  stroke-dasharray: 8 3 2 3;
}

.relationship-layer.has-selection > g:not(.is-selected) {
  opacity: 0.2;
}

.relationship-layer .is-selected path:not(.relationship-hit) {
  stroke: var(--accent);
  stroke-width: 3;
  opacity: 1;
}

.relationship-controls-layer {
  position: absolute;
  z-index: 7;
  top: var(--axis-height);
  left: 0;
  pointer-events: none;
}

.relationship-button {
  width: 18px;
  height: 18px;
  padding: 0;
  transform: translate(-50%, -50%);
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--page);
  color: var(--accent);
  display: grid;
  place-items: center;
  pointer-events: auto;
}

.relationship-button svg,
.legend-marker svg {
  display: block;
  width: 12px;
  height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.25;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

.relationship-button:hover,
.relationship-button:focus-visible {
  background: var(--accent-soft);
}

.relationship-button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--page);
}

.relationship-layer .relationship-hit {
  stroke: transparent;
  stroke-width: 10;
  stroke-dasharray: none;
  pointer-events: stroke;
  cursor: pointer;
}

.relationship-tooltip {
  position: fixed;
  inset: auto;
  margin: 0;
  width: min(360px, calc(100vw - 24px));
  max-height: calc(100vh - 24px);
  overflow: auto;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  background: var(--page);
  color: var(--ink);
  box-shadow: 0 4px 16px #20282d1f;
  font-size: 0.82rem;
  line-height: 1.5;
  white-space: pre-line;
}

.relationship-tooltip::first-line {
  color: var(--accent);
  font-weight: 600;
}

.crosshair {
  position: absolute;
  z-index: 4;
  top: 0;
  width: 1px;
  border-left: 2px solid var(--accent);
  pointer-events: none;
}

.crosshair span {
  position: sticky;
  top: 7px;
  display: block;
  width: max-content;
  transform: translateX(-50%);
  padding: 3px 7px;
  border-radius: 0;
  background: var(--accent);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}

.legend {
  display: grid;
  gap: 16px;
  margin: 16px 0;
  color: var(--ink-soft);
  font-size: 0.76rem;
}

.legend-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  align-items: center;
}

.legend-heading {
  flex: 0 0 122px;
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.legend-group span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend-line {
  display: inline-block;
  width: 32px;
  border-top: 2px solid var(--accent);
}

.legend-line.personal {
  border-top-style: dashed;
}

.legend-line.rupture {
  border-top-color: var(--ink-soft);
  border-top-style: dotted;
}

.legend-bar {
  display: inline-block;
  width: 32px;
  height: 14px;
}

.legend-bar.phase {
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line-strong);
}

.legend-bar.house {
  border-left: 3px solid #9a3b32;
  background: linear-gradient(90deg,
    color-mix(in srgb, #9a3b32 34%, var(--page)) 0 33%,
    color-mix(in srgb, #295f73 34%, var(--page)) 0 66%,
    color-mix(in srgb, #526f3d 34%, var(--page)) 0);
}

.legend-reign {
  position: relative;
  display: inline-block;
  width: 28px;
  height: 13px;
  background: linear-gradient(color-mix(in srgb, var(--ink-soft) 55%, transparent), color-mix(in srgb, var(--ink-soft) 55%, transparent)) center / 100% 2px no-repeat;
}

.legend-reign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  transform: translate(-50%, -50%);
  border: 2px solid var(--page);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 1px var(--line-strong);
}

.legend-reign.major::after {
  width: 9px;
  height: 9px;
  background: var(--accent);
}

.legend-now {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--current);
}

.legend-marker {
  display: inline-grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: 50%;
  background: var(--page);
  color: var(--accent);
}

.detail-toggle {
  position: fixed;
  z-index: 45;
  right: 18px;
  bottom: 18px;
  width: auto;
  min-height: 44px;
  padding: 8px 12px;
  display: grid;
  grid-template-columns: auto;
  gap: 0;
  align-items: center;
  border: 1px solid var(--gray-blue);
  border-radius: 0;
  background: var(--accent-soft);
  color: var(--ink);
  cursor: pointer;
  text-align: left;
}

.detail-toggle:hover {
  border-color: var(--ink-soft);
}

.detail-toggle span {
  color: var(--ink-soft);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-toggle strong {
  overflow: hidden;
  font-size: 0.82rem;
  font-weight: 400;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-panel {
  position: fixed;
  left: auto;
  height: calc(100vh - 36px);
  max-width: none;
  z-index: 50;
  top: 18px;
  right: 18px;
  bottom: 18px;
  width: min(420px, calc(100vw - 36px));
  min-height: 0;
  margin: 0;
  padding: 16px;
  display: grid;
  grid-template-columns: 1fr;
  align-content: start;
  gap: 20px;
  overflow-y: auto;
  /* Reserve the scrollbar's width on both sides so the content stays centred. */
  scrollbar-gutter: stable both-edges;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--page);
  box-shadow: 0 8px 40px #20282d1a;
  opacity: 0;
  visibility: hidden;
  transform: translateX(calc(100% + 36px));
  transition: transform 160ms ease, opacity 160ms ease;
}

.detail-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.detail-panel-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.detail-close {
  min-height: 40px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--page);
  color: var(--ink);
  font-weight: 400;
  cursor: pointer;
}

.detail-close:hover {
  border-color: var(--ink-soft);
}

.detail-type {
  margin: 0;
  color: var(--secondary);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-dates {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

#detail-copy {
  max-width: 680px;
  margin-bottom: 0;
  white-space: pre-line;
}

.detail-secondary ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.detail-secondary li + li {
  margin-top: 0.45rem;
}

.source-links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 0.78rem;
}

.source-links a {
  color: var(--accent);
}

.mobile-timeline {
  display: none;
}

footer {
  padding: 30px 0 54px;
  display: flex;
  justify-content: space-between;
  gap: 30px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.82rem;
}

footer p {
  margin: 0;
}

.article-page {
  width: min(820px, calc(100% - 48px));
  margin: 0 auto;
  padding: 42px 0 72px;
}

.article-page header {
  margin-bottom: 2.8rem;
}

.article-page h1 {
  font-size: clamp(2.1rem, 5vw, 4.6rem);
}

.article-page .dek {
  margin-top: 1.5rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.article-page h2 {
  margin: 3.2rem 0 0.8rem;
  font-size: 1.5rem;
}

.article-page h3 {
  margin-top: 2.4rem;
  font-size: 1.15rem;
}

.article-page p,
.article-page li {
  font-size: 0.96rem;
}

.article-page .note,
.article-page table {
  font-size: 0.9rem;
}

.article-page .note {
  margin: 2rem 0;
  padding: 1.2rem 1.4rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
}

.article-page table {
  width: 100%;
  border-collapse: collapse;
}

.article-page th,
.article-page td {
  padding: 0.8rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.article-page code {
  padding: 0.1em 0.3em;
  border-radius: 0;
  background: var(--surface-soft);
  font-size: 0.88em;
}

@media (max-width: 760px) {
  :root {
    --label-width: 128px;
  }

  body {
    background: var(--page);
  }

  .explorer,
  footer,
  .dp-project-header {
    width: min(100% - 30px, 1440px);
  }

  h1 {
    font-size: clamp(2.1rem, 12vw, 3.45rem);
  }


  .story-jumps {
    align-items: flex-start;
    flex-direction: column;
  }

  .story-jumps > div {
    width: 100%;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .preset-button {
    flex: 1 1 0;
    min-width: 0;
    padding: 0;
  }

  .desktop-timeline {
    display: none;
  }

  .mobile-timeline {
    display: block;
    margin: 12px -15px 0;
  }

  .mobile-timeline > .status-line {
    padding: 0 15px;
  }

  /* Full-bleed so the chart cannot show through the gutters beside the sticky toolbar. */
  .explore-toolbar {
    margin: 0 -15px;
    padding: 0 15px;
  }

  .column-header {
    position: sticky;
    z-index: 20;
    top: 64px;
    height: 128px;
    overflow: hidden;
    border-bottom: 1px solid var(--line-strong);
    background: var(--page);
  }

  .column-header::before {
    content: "Year";
    position: absolute;
    z-index: 1;
    inset: 0 auto 0 0;
    width: 52px;
    padding: 0 8px 8px 0;
    display: flex;
    align-items: flex-end;
    border-right: 1px solid var(--line-strong);
    background: var(--page);
    color: var(--ink-soft);
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .column-header-track {
    position: relative;
    height: 100%;
    will-change: transform;
  }

  .column-region {
    position: absolute;
    top: 0;
    height: 20px;
    padding: 4px 4px 0;
    overflow: hidden;
    border-left: 1px solid var(--line-strong);
    color: var(--accent);
    font-size: 0.56rem;
    letter-spacing: 0.06em;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
  }

  .column-label {
    position: absolute;
    bottom: 0;
    width: 36px;
    height: 104px;
    padding: 6px 0;
    overflow: hidden;
    border: 0;
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    font-size: 0.72rem;
    line-height: 36px;
    text-align: start;
    text-overflow: ellipsis;
    white-space: nowrap;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
  }

  .column-label.current-indicator {
    color: var(--current);
  }

  .vertical-scroller {
    overflow-x: auto;
    overflow-y: hidden;
    border-bottom: 1px solid var(--line);
    scrollbar-color: var(--line-strong) var(--surface-soft);
  }

  .vertical-chart {
    position: relative;
    background: color-mix(in srgb, var(--page) 72%, transparent);
  }

  .column-axis {
    position: sticky;
    z-index: 8;
    left: 0;
    width: 52px;
    height: 100%;
    border-right: 1px solid var(--line-strong);
    background: var(--page);
  }

  .column-tick,
  .column-crosshair-label {
    position: absolute;
    right: 6px;
    transform: translateY(-50%);
    color: var(--ink-soft);
    font-size: 0.62rem;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }

  .column-crosshair-label {
    right: 2px;
    padding: 2px 4px;
    background: var(--accent);
    color: #fff;
  }

  .column-gridline {
    position: absolute;
    left: 52px;
    right: 0;
    border-top: 1px solid color-mix(in srgb, var(--line) 62%, transparent);
  }

  .column-crosshair {
    position: absolute;
    z-index: 6;
    left: 52px;
    right: 0;
    border-top: 2px solid var(--accent);
    pointer-events: none;
  }

  .column-lane {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 36px;
    border-left: 1px solid color-mix(in srgb, var(--line) 62%, transparent);
  }

  .column-lane.region-start {
    border-left-color: var(--line-strong);
  }

  .vertical-phase,
  .vertical-rule,
  .vertical-reign,
  .vertical-reign-duration,
  .vertical-chart .relationship-button {
    position: absolute;
    margin: 0;
    padding: 0;
    border-radius: 0;
  }

  .vertical-phase {
    z-index: 1;
    width: 22px;
    border: 0;
    border-right: 1px solid var(--line-strong);
    background: var(--surface-soft);
    cursor: pointer;
  }

  .vertical-phase.current {
    background: color-mix(in srgb, var(--current) 10%, var(--surface-soft));
  }

  .vertical-rule {
    z-index: 2;
    width: 16px;
    overflow: hidden;
    border: 0;
    border-top: 3px solid var(--house-color);
    background: color-mix(in srgb, var(--house-color) 34%, var(--page));
    color: var(--ink);
    cursor: pointer;
    font-size: 0.6rem;
    line-height: 16px;
    text-align: start;
    text-overflow: ellipsis;
    white-space: nowrap;
    writing-mode: vertical-rl;
  }

  .vertical-reign-duration {
    z-index: 2;
    width: 2px;
    transform: translateX(-50%);
    background: var(--ink-soft);
    opacity: 0.55;
  }

  .vertical-reign {
    z-index: 4;
    width: 11px;
    height: 11px;
    transform: translate(-50%, -50%);
    border: 2px solid var(--page);
    border-radius: 50%;
    background: var(--ink);
    box-shadow: 0 0 0 1px var(--line-strong);
    cursor: pointer;
  }

  .vertical-reign.importance-3 {
    background: var(--accent);
  }

  .column-links {
    top: 0;
    z-index: 3;
  }

  .vertical-chart .relationship-button {
    z-index: 5;
    border-radius: 50%;
  }

  .legend {
    margin-top: 20px;
  }

  .legend-group {
    gap: 10px 18px;
  }

  .legend-heading {
    flex-basis: 100%;
  }

  .detail-toggle {
    left: auto;
    right: 10px;
    bottom: 10px;
    width: auto;
  }

  .detail-panel {
    height: auto;
    top: auto;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    max-height: min(72vh, 640px);
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    transform: translateY(calc(100% + 12px));
  }

  .detail-panel.is-open {
    transform: translateY(0);
  }

  footer {
    flex-direction: column;
  }

  .article-page {
    width: min(100% - 30px, 820px);
  }

  .article-page table {
    display: block;
    overflow-x: auto;
  }
}


[hidden] { display: none !important; }
.explore-toolbar { position: sticky; top: 0; z-index: 30; display: grid; align-items: center; height: 64px; background: var(--page); border-bottom: 1px solid var(--line); }
.search-control { position: relative; display: grid; gap: 6px; min-width: 0; }
.search-panel { position: absolute; z-index: 1; top: calc(100% + 4px); left: 0; right: 0; max-height: min(420px, 60vh); overflow: auto; border: 1px solid var(--line-strong); background: var(--page); box-shadow: 0 6px 20px #20282d1f; }
#search-results { margin: 0; padding: 4px; list-style: none; }
#search-results [role="option"] { display: grid; gap: 3px; padding: 10px 12px; cursor: pointer; }
#search-results [role="option"]:hover, #search-results [aria-selected="true"] { background: var(--accent-soft); }
#search-results strong { font-size: 0.9rem; font-weight: 600; }
#search-results span { font-size: 0.78rem; color: var(--ink-soft); }
#search-status { margin: 0; padding: 12px 16px; font-size: 0.82rem; }
.sr-only { position: absolute; top: 0; left: 0; width: 1px; height: 1px; padding: 0 !important; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.search-match { outline: 3px solid var(--accent); outline-offset: 4px; }
.label-region.search-match { outline-offset: -3px; }
input[type="search"] { width: 100%; min-width: 0; min-height: 42px; border: 1px solid var(--line); padding: 8px 10px; border-radius: 0; background: var(--page); color: var(--ink); }
.status-line { margin: 4px 0 8px; color: var(--ink-soft); font-size: 0.78rem; }
.axis-tick:last-child span { left: auto; right: 6px; }
.detail-panel h3 { margin: 0 0 10px; font-size: 0.88rem; font-weight: 600; }
.detail-panel p, .detail-panel li { font-size: 0.9rem; }
.detail-panel a { color: var(--accent); overflow-wrap: anywhere; }
.detail-panel ul { padding-left: 18px; }
.detail-panel section, .background-sources { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); }
.detail-panel section:empty { display: none; }
.wikipedia-context { background: var(--surface-soft); padding: 16px; }
.detail-panel .attribution { font-size: 0.74rem; color: var(--ink-soft); }
.background-sources summary { cursor: pointer; font-size: 0.82rem; }
.quality-counts { display: flex; flex-wrap: wrap; gap: 16px 32px; padding: 20px 0; border-block: 1px solid var(--line); }
.quality-counts > div { display: flex; flex-direction: column; }
.quality-counts dd { order: -1; margin: 0; font-size: 1.8rem; font-variant-numeric: tabular-nums; }
.quality-group { margin: 18px 0; padding: 14px; border: 1px solid var(--line); }
.quality-group summary { cursor: pointer; font-weight: 600; }
.quality-group li { margin: 12px 0; overflow-wrap: anywhere; }
@media (max-width: 960px) { .snapshot-control { grid-template-columns: auto minmax(0, 1fr); } #snapshot-summary { grid-column: 1 / -1; } }
@media (max-width: 760px) { .snapshot-control { grid-template-columns: 1fr; gap: 8px; } }

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}
.legend .status-line { margin: 0; }

.label-region::before { content: ""; flex: none; width: 5px; height: 5px; margin: 0 3px; border-right: 1.5px solid; border-bottom: 1.5px solid; transform: translateY(-2px) rotate(45deg); transition: transform 120ms ease; }
.label-region[aria-expanded="false"]::before { transform: rotate(-45deg); }
.label-region:hover { color: var(--ink); background: var(--surface-soft); }