/* Layout: full-bleed terrain map; era seal card top-left, event ledger right, timeline rail along the bottom. */
:root {
  --bg: #e9eeec;
  --panel: rgba(247, 249, 248, 0.92);
  --panel-solid: #f7f9f8;
  --ink: #1b2226;
  --muted: #5b6a70;
  --rule: rgba(27, 34, 38, 0.12);
  --jade: #2c7a68;
  --jade-soft: rgba(44, 122, 104, 0.14);
  --cinnabar: #b93a26;
  --cinnabar-ink: #fff6f2;
  --shadow: 0 6px 24px rgba(20, 30, 35, 0.16);
  --font-display: "Noto Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --font-body: "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-data: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #101416;
    --panel: rgba(21, 26, 29, 0.9);
    --panel-solid: #151a1d;
    --ink: #e5ebe9;
    --muted: #96a5aa;
    --rule: rgba(229, 235, 233, 0.14);
    --jade: #63c2a9;
    --jade-soft: rgba(99, 194, 169, 0.16);
    --cinnabar: #e8664f;
    --cinnabar-ink: #1a0d0a;
    --shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #101416;
  --panel: rgba(21, 26, 29, 0.9);
  --panel-solid: #151a1d;
  --ink: #e5ebe9;
  --muted: #96a5aa;
  --rule: rgba(229, 235, 233, 0.14);
  --jade: #63c2a9;
  --jade-soft: rgba(99, 194, 169, 0.16);
  --cinnabar: #e8664f;
  --cinnabar-ink: #1a0d0a;
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 14px/1.45 var(--font-body);
  overflow: hidden;
}
#app { position: relative; height: 100%; }
#map { position: absolute; inset: 0; z-index: 0; }

.panel {
  background: var(--panel);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--rule);
  border-radius: 10px;
  box-shadow: var(--shadow);
}

/* Era card */
.era {
  position: absolute;
  top: 16px; left: 16px;
  width: min(360px, calc(100% - 32px));
  padding: 14px 16px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 14px;
  z-index: 2;
}
.seal {
  grid-row: span 3;
  width: 56px; height: 56px;
  display: grid; place-items: center;
  background: var(--cinnabar);
  color: var(--cinnabar-ink);
  font: 700 36px/1 var(--font-display);
  border-radius: 6px;
  box-shadow: inset 0 0 0 3px var(--cinnabar), inset 0 0 0 4px var(--cinnabar-ink);
}
.era-name { margin: 0; font: 600 17px/1.2 var(--font-body); text-wrap: balance; }
.era-zh { font: 500 14px/1.2 var(--font-display); color: var(--muted); }
.era-year {
  font: 500 26px/1.1 var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.era-year small { font-size: 12px; color: var(--muted); letter-spacing: 0.08em; margin-left: 4px; }
.era-summary { grid-column: 1 / -1; margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.era-snap { grid-column: 1 / -1; margin: 6px 0 0; font-size: 12px; font-weight: 500; color: var(--jade); }
.era-note { grid-column: 1 / -1; margin: 4px 0 0; font-size: 11px; color: var(--muted); font-style: italic; }
.seal.double { font-size: 21px; letter-spacing: -0.02em; }

.chip {
  appearance: none;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--ink);
  font: 500 12px/1 var(--font-body);
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
}
.chip[aria-pressed="true"] { background: var(--jade-soft); border-color: var(--jade); color: var(--jade); }
.chip:focus-visible, .ev:focus-visible, .play:focus-visible, input[type=range]:focus-visible { outline: 2px solid var(--jade); outline-offset: 2px; }

/* Event ledger */
.ledger {
  position: absolute;
  top: 16px; right: 16px;
  max-height: calc(100% - 136px);
  width: 340px;
  display: flex; flex-direction: column;
  z-index: 2;
  overflow: hidden;
}
.ledger-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 8px;
  padding: 12px 16px 10px;
  border-bottom: 1px solid var(--rule);
}
.ledger-head h2 { margin: 0; font: 600 13px/1 var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; }
.ledger-head span { color: var(--muted); font-size: 12px; }
.ledger-toggle { display: none; }
.ev-list { list-style: none; margin: 0; padding: 4px 0; overflow-y: auto; min-height: 0; }
.ev {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 2px 10px;
  width: 100%;
  text-align: left;
  border: 0; background: transparent; color: inherit;
  padding: 8px 16px;
  cursor: pointer;
  font: inherit;
}
.ev:hover { background: var(--jade-soft); }
.ev-year { font: 500 12px/1.45 var(--font-data); font-variant-numeric: tabular-nums; color: var(--cinnabar); }
.ev-title { font-weight: 500; min-width: 0; }
.ev-sub { grid-column: 2; font-size: 12px; line-height: 1.3; color: var(--muted); }
.ev-sub:lang(zh-CN) { font: 13px/1.3 var(--font-display); }
.ev.minor .ev-title { font-weight: 400; }
.ev.minor .ev-year { color: var(--muted); }
.ev.future { opacity: 0.45; }
.ev.future .ev-year { color: var(--muted); }
.ev.selected { background: var(--jade-soft); box-shadow: inset 3px 0 0 var(--jade); }
.ev-detail { grid-column: 2; margin-top: 6px; display: grid; gap: 6px; }
.ev-detail p { margin: 0; font-size: 13px; }
.ev-more { color: var(--jade); font-size: 12px; font-weight: 500; }

/* Story view: the longer account of one event, inside the ledger */
.story { overflow-y: auto; min-height: 0; padding: 0 18px 16px; }
.story-nav {
  position: sticky; top: 0; z-index: 1;
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0; margin-bottom: 4px;
  background: var(--panel-solid); border-bottom: 1px solid var(--rule);
}
.story-step { display: flex; gap: 4px; }
.story-meta { display: flex; gap: 10px; align-items: center; margin-top: 10px; }
.story-meta .when { font: 500 12px/1 var(--font-data); color: var(--cinnabar); font-variant-numeric: tabular-nums; }
.cat {
  font: 600 10px/1 var(--font-body); letter-spacing: 0.08em; text-transform: uppercase;
  padding: 4px 7px; border-radius: 4px; background: var(--jade-soft); color: var(--jade);
}
.cat-war { background: rgba(185, 58, 38, 0.12); color: var(--cinnabar); }
.story-head h3 { margin: 8px 0 2px; font: 700 21px/1.25 var(--font-display); text-wrap: balance; }
.story-sub { color: var(--muted); font-size: 13px; }
.story-sub:lang(zh-CN) { font: 500 15px/1.3 var(--font-display); }
.story-place {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 8px;
  appearance: none; border: 0; background: transparent; padding: 0; cursor: pointer;
  font: 500 12px/1.3 var(--font-body); color: var(--jade); text-align: left;
}
.story-place i { width: 7px; height: 7px; background: var(--cinnabar); transform: rotate(45deg); flex: none; }
.story-place:hover { text-decoration: underline; }
.story-lede { margin: 12px 0 0; font-weight: 500; font-size: 14px; }
.story-body p { margin: 10px 0 0; font-size: 14px; line-height: 1.65; }
html:lang(zh-CN) .story-body p, html:lang(zh-CN) .story-lede { font-size: 15px; line-height: 1.8; }
.story-body .muted { color: var(--muted); }
.story blockquote {
  margin: 14px 0 0; padding: 10px 14px;
  border-left: 3px solid var(--cinnabar); background: rgba(185, 58, 38, 0.06); border-radius: 0 6px 6px 0;
}
.story blockquote p { margin: 0; }
.story .q-zh { font: 500 15px/1.7 var(--font-display); }
.story .q-en { margin-top: 4px; font-size: 13px; color: var(--muted); font-style: italic; }
.story cite { display: block; margin-top: 6px; font-size: 11px; color: var(--muted); font-style: normal; }
.story h4 { margin: 0 0 4px; font: 600 11px/1 var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.why { margin-top: 16px; padding: 10px 12px; border-radius: 6px; background: var(--jade-soft); }
.why p { margin: 4px 0 0 !important; }
.people { margin-top: 16px; }
.people ul { list-style: none; margin: 6px 0 0; padding: 0; display: grid; gap: 6px; }
.people li { display: grid; gap: 1px; font-size: 13px; }
.people b { font: 600 14px/1.3 var(--font-display); }
.people li > span { color: var(--muted); font-size: 12px; }
.story-links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 16px !important; font-size: 12px !important; }
.story-links a { color: var(--jade); }

/* Timeline rail */
.rail {
  position: absolute;
  left: 16px; right: 16px; bottom: 16px;
  padding: 10px 16px 12px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 4px 14px;
  align-items: center;
  z-index: 3;
}
.play {
  grid-row: span 2;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--rule);
  background: var(--panel-solid);
  color: var(--ink);
  cursor: pointer;
  display: grid; place-items: center;
}
.play svg { width: 16px; height: 16px; fill: currentColor; }
.track { position: relative; min-width: 0; }
.bands { position: relative; height: 22px; }
.band {
  position: absolute; top: 0; bottom: 4px;
  appearance: none; background: transparent; color: var(--muted);
  border: 0; border-left: 1px solid var(--rule); border-radius: 0;
  padding: 0 0 0 3px; margin: 0;
  text-align: left;
  white-space: nowrap; overflow: hidden;
  cursor: pointer;
}
.band:hover { background: var(--jade-soft); }
.band:focus-visible { outline: 2px solid var(--jade); outline-offset: -2px; }
.band b { font: 600 13px/18px var(--font-display); color: var(--ink); }
.band.current { background: var(--jade-soft); }
.band.current { color: var(--jade); }
.band.current b { color: var(--jade); }
.ticks { position: absolute; left: 0; right: 0; top: 22px; height: 8px; pointer-events: none; }
.tick {
  position: absolute; top: 0; width: 2px; height: 8px; margin-left: -1px; padding: 0; border: 0;
  background: var(--cinnabar); opacity: 0.55; border-radius: 1px; pointer-events: auto; cursor: pointer;
}
.tick.l2 { height: 6px; top: 2px; opacity: 0.45; background: var(--ink); }
.tick.l3 { height: 4px; top: 4px; opacity: 0.4; background: var(--ink); }
[data-zoom="era"] .tick, [data-zoom="decades"] .tick { width: 3px; }
.tick:hover { opacity: 1; transform: scaleY(1.4); }
.band.snap { border-left-color: var(--rule); }
.band.snap span { font: 500 10px/18px var(--font-data); color: var(--muted); font-variant-numeric: tabular-nums; }
.band.snap.era-start { border-left: 2px solid var(--jade); }
.band.snap.current { background: var(--jade-soft); }
.band.snap.current span { color: var(--jade); }

/* Timeline zoom */
.zoom { grid-column: 3; grid-row: 1 / span 2; display: flex; align-items: center; gap: 4px; }
.zbtn {
  width: 28px; height: 28px; border-radius: 50%;
  border: 1px solid var(--rule); background: var(--panel-solid); color: var(--ink);
  font: 500 16px/1 var(--font-body); cursor: pointer; display: grid; place-items: center; padding: 0;
}
.zbtn:disabled { opacity: 0.35; cursor: default; }
.zbtn:not(:disabled):hover { border-color: var(--jade); color: var(--jade); }
.zbtn[hidden] { display: none; }
.zlevel { min-width: 52px; text-align: center; font: 600 12px/1 var(--font-body); color: var(--jade); }
input[type=range] { width: 100%; margin: 6px 0 0; accent-color: var(--jade); }
.scale-hint { font-family: var(--font-body); }
.scale {
  grid-column: 2;
  display: flex; justify-content: space-between;
  font: 11px/1 var(--font-data); color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* Map markers */
.mk-event { width: 18px; height: 18px; display: grid; place-items: center; cursor: pointer; }
.mk-event i {
  position: relative;
  width: 12px; height: 12px;
  background: var(--cinnabar);
  border: 2px solid var(--cinnabar-ink);
  transform: rotate(45deg);
  box-shadow: 0 1px 4px rgba(0,0,0,.35);
  transition: transform .2s;
}
.mk-event.minor i { width: 9px; height: 9px; border-width: 1.5px; background: #8a5a3a; }
.mk-event.past i { opacity: 0.55; transform: rotate(45deg) scale(0.75); }
.mk-event.active i { transform: rotate(45deg) scale(1.35); opacity: 1; }
.mk-event.active i::after {
  content: ""; position: absolute; inset: -8px;
  border: 2px solid var(--cinnabar); border-radius: 2px;
  animation: ping 1.6s ease-out infinite;
}
@keyframes ping { from { opacity: .9; transform: scale(.6); } to { opacity: 0; transform: scale(1.6); } }
.mk-place { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.mk-place i { width: 6px; height: 6px; border-radius: 50%; background: #1b2226; border: 1.5px solid #f4f2ea; }
.mk-place.capital i { width: 9px; height: 9px; border-radius: 2px; background: #b93a26; border: 2px solid #f4f2ea; box-shadow: 0 0 0 1px #1b2226; }
.mk-place.capital span { font-size: 13px; }
.mk-place.r-secondary i { width: 8px; height: 8px; background: #f4f2ea; border: 2px solid #b93a26; }
.mk-place.r-port i { background: #1f6f9a; }
.mk-place.r-frontier i { width: 8px; height: 8px; border-radius: 1px; background: #6a3a1e; transform: rotate(45deg); }
.mk-place.r-frontier span { color: #5a2a12; }
.mk-place span, .mk-polity {
  font: 600 12px/1.1 var(--font-display);
  color: #1b2226;
  text-shadow: 0 0 3px #f4f2ea, 0 0 3px #f4f2ea, 0 0 6px #f4f2ea;
  white-space: nowrap;
}
.mk-place em { font: 500 10px var(--font-body); font-style: normal; color: #3d4a50; }
.mk-polity { pointer-events: none; text-align: center; font-weight: 500; color: #3d4a50; font-size: 12px; letter-spacing: 0.04em; }
.mk-polity.focus { font-size: 26px; color: #1f5c4e; letter-spacing: 0.3em; }
.mk-polity small { display: block; font: 500 10px var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; }
.mk-polity.focus small { font-size: 11px; letter-spacing: 0.16em; }
.mk-polity.neighbour { font-size: 15px; color: #3a3046; letter-spacing: 0.06em; }
.mk-polity.neighbour small { font-size: 9px; }
.mk-polity.focus.state { font-size: 18px; letter-spacing: 0.08em; color: #1d2a2e; }
.mk-polity.focus.state.minor { font-size: 13px; letter-spacing: 0; }
.mk-polity.focus.state small { font-size: 9px; letter-spacing: 0.06em; }
.mk-polity.minor small { display: none; }
/* English labels: the English name leads, the Chinese name sits small underneath. */
html:lang(en) .mk-polity { font-family: var(--font-body); letter-spacing: 0.02em; }
html:lang(en) .mk-polity.focus { font-size: 17px; letter-spacing: 0.06em; text-transform: uppercase; }
html:lang(en) .mk-polity.focus.state { font-size: 13px; letter-spacing: 0.03em; text-transform: none; font-weight: 600; }
html:lang(en) .mk-polity.neighbour { font-size: 12px; }
html:lang(en) .mk-polity small { font: 500 11px var(--font-display); text-transform: none; letter-spacing: 0.04em; }
html:lang(en) .mk-polity.minor small { display: none; }

.note { margin: 0; padding: 10px 16px 12px; border-top: 1px solid var(--rule); font-size: 11px; color: var(--muted); }
.maplibregl-ctrl-bottom-left { bottom: 108px; left: 6px; }

@media (prefers-reduced-motion: reduce) {
  .mk-event.active i::after { animation: none; }
}

/* Phone: compact era bar (tools and layers behind a button), ledger as a bottom sheet above the timeline. */
.era-more { display: none; }
#app { height: 100dvh; }
@media (max-width: 720px) {
  .era {
    top: calc(8px + env(safe-area-inset-top)); left: 8px; width: calc(100% - 16px);
    padding: 8px 10px; gap: 0 10px; box-sizing: border-box;
  }
  .seal { width: 38px; height: 38px; font-size: 24px; grid-row: span 2; box-shadow: inset 0 0 0 2px var(--cinnabar), inset 0 0 0 3px var(--cinnabar-ink); }
  .seal.double { font-size: 14px; }
  .era-name { font-size: 15px; }
  .era-zh { display: none; }
  .era-year { font-size: 18px; }
  .era-ruler { font-size: 12px; margin-top: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .era-summary, .era-note, .note, .era-snap { display: none; }
  .era-more { display: inline-block; position: absolute; top: 8px; right: 10px; }
  .era-more[aria-expanded="true"] { background: var(--jade-soft); border-color: var(--jade); color: var(--jade); }
  .era:not(.open) .era-layers { display: none; }
  .era.open { max-height: calc(100dvh - var(--rail-h, 120px) - 40px); overflow-y: auto; }
  .era.open .era-summary, .era.open .era-snap { display: block; }
  .era-layers .chip { padding: 7px 10px; font-size: 13px; }
  .maplibregl-ctrl-bottom-left, .maplibregl-ctrl-bottom-right { display: none; }

  .rail {
    left: 8px; right: 8px; bottom: calc(8px + env(safe-area-inset-bottom));
    padding: 6px 10px 8px; gap: 2px 8px; grid-template-columns: auto 1fr auto;
  }
  .play { width: 36px; height: 36px; grid-row: 1; }
  .band b { font-size: 11px; }
  .scale { display: none; }
  .zoom { grid-column: 3; grid-row: 1; gap: 2px; }
  #pan-prev, #pan-next { display: none; }
  .zlevel { min-width: 34px; font-size: 11px; }
  .zbtn { width: 30px; height: 30px; }

  .ledger {
    top: auto; left: 8px; right: 8px; width: auto;
    bottom: calc(var(--rail-h, 64px) + 14px + env(safe-area-inset-bottom));
    max-height: calc(100dvh - var(--rail-h, 64px) - 110px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
  }
  .ledger:not(.collapsed) { height: 52dvh; }
  .ledger-head { padding: 8px 12px 6px; align-items: center; }
  .ledger.collapsed .ledger-head { border-bottom: 0; }
  .ledger.collapsed .ev-list, .ledger.collapsed .story, .ledger.collapsed .ev-filter,
  .ledger.collapsed .rulers { display: none; }
  .ledger-toggle { display: inline-block; }

  .atlas-pop { max-width: calc(100vw - 24px) !important; }
}
/* Overlay layers */
/* Layer switches, one row per kind: map, power, war, travel, culture. */
.era-layers { grid-column: 1 / -1; display: grid; gap: 6px; margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--rule); }
/* The row label hangs in a left gutter so wrapped chips line up under the first chip. */
.lg { position: relative; display: flex; flex-wrap: wrap; align-items: center; gap: 5px; padding-left: 4.4em; }
.lg > span { position: absolute; left: 0; top: 8px; font: 600 11px/1 var(--font-body); color: var(--muted); }
html:lang(zh-CN) .lg { padding-left: 2.9em; }
html:lang(zh-CN) .lg > span { letter-spacing: 0.1em; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.lang-switch { position: absolute; top: 12px; right: 12px; display: flex; border: 1px solid var(--rule); border-radius: 999px; overflow: hidden; }
.lang-switch button { appearance: none; border: 0; background: transparent; color: var(--muted); font: 600 11px/1 var(--font-body); padding: 5px 8px; cursor: pointer; }
.lang-switch button + button { border-left: 1px solid var(--rule); }
.lang-switch button[aria-pressed="true"] { background: var(--jade); color: #fff; }
.era-name { padding-right: 80px; }
.chip.layer[aria-pressed="true"] { background: rgba(185, 58, 38, 0.1); border-color: var(--cinnabar); color: var(--cinnabar); }
.era-ruler { grid-column: 1 / -1; margin: 6px 0 0; font: 600 13px/1.35 var(--font-display); color: var(--ink); }

.mk-polity .ruler {
  display: block; margin-top: 2px;
  font: 600 11px/1.2 var(--font-display); letter-spacing: 0.02em; text-transform: none;
  color: #7a2a1c;
}
.mk-polity.focus .ruler { font-size: 13px; letter-spacing: 0.04em; }
.mk-polity .ruler em { font-style: normal; font-weight: 500; color: #5b4a44; font-size: 0.9em; }
html:lang(en) .mk-polity .ruler { font-family: var(--font-body); font-weight: 600; }

/* Battle card, standing over the war site */
.mk-army {
  box-sizing: border-box; width: 272px; padding: 8px 10px 9px; cursor: pointer;
  background: var(--panel-solid); color: var(--ink);
  border: 1px solid var(--rule); border-top: 3px solid var(--cinnabar); border-radius: 8px;
  box-shadow: var(--shadow); font: 12px/1.35 var(--font-body);
}
.mk-army.selected { width: 302px; }
.mk-army::after {
  content: ""; position: absolute; left: 50%; bottom: -7px; width: 12px; height: 12px; margin-left: -6px;
  background: var(--panel-solid); border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); transform: rotate(45deg);
}
.army-title { display: flex; justify-content: space-between; gap: 8px; font: 700 14px/1.25 var(--font-display); margin-bottom: 6px; }
.army-title span { font: 500 11px/1.6 var(--font-data); color: var(--cinnabar); white-space: nowrap; }
.sides { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.side { min-width: 0; }
.side + .side { border-left: 1px solid var(--rule); padding-left: 8px; }
.sides .side:nth-child(3) { grid-column: 1 / -1; border-left: 0; padding-left: 0; border-top: 1px solid var(--rule); padding-top: 6px; }
.side-head { display: flex; align-items: baseline; justify-content: space-between; gap: 4px; }
.side-head b { font: 600 13px/1.25 var(--font-display); }
.side .res { font: 700 10px/1 var(--font-body); padding: 3px 5px; border-radius: 3px; background: var(--rule); color: var(--muted); white-space: nowrap; }
.side.won .res { background: var(--cinnabar); color: var(--cinnabar-ink); }
.side .cmd { margin-top: 3px; font-weight: 500; }
.side .troops { margin-top: 2px; font-family: var(--font-data); font-size: 11px; }
.side .troops span, .army-losses span { font-family: var(--font-body); color: var(--muted); }
.units { display: flex; flex-wrap: wrap; gap: 3px; margin-top: 4px; }
.unit { font-size: 10px; line-height: 1; padding: 3px 5px; border-radius: 3px; background: var(--jade-soft); color: var(--jade); }
.unit.u-navy { background: rgba(42, 127, 176, 0.15); color: #2a7fb0; }
.unit.u-cavalry { background: rgba(160, 125, 90, 0.18); color: #8a6436; }
.strength { display: flex; height: 6px; margin-top: 7px; border-radius: 3px; overflow: hidden; gap: 2px; }
.strength i { display: block; min-width: 4px; background: #9aa6aa; }
.strength i.won { background: var(--cinnabar); }
.army-losses, .army-note { margin: 6px 0 0; font-size: 11px; }
.army-note { color: var(--muted); font-style: italic; }
.forces { margin-top: 16px; padding: 10px 12px; border: 1px solid var(--rule); border-left: 3px solid var(--cinnabar); border-radius: 6px; }
.forces .sides { margin-top: 6px; }
.story .forces p { margin: 6px 0 0; font-size: 11px; line-height: 1.4; }

/* Routes */
.mk-route {
  max-width: 180px; padding: 3px 7px; cursor: pointer; white-space: normal;
  font: 600 11px/1.3 var(--font-display); color: #fff;
  background: #2f5f8a; border-radius: 4px; box-shadow: 0 1px 4px rgba(0,0,0,.3);
}
.mk-route.static { cursor: default; }
.mk-route b { display: block; font: 600 9px/1.2 var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; opacity: 0.85; }
.mk-route.k-campaign { background: #b93a26; }
.mk-route.k-trade { background: #9a6f1e; }
.mk-route.k-canal { background: #2a7fb0; }
.mk-route.k-wall { background: #5a4636; }
.mk-arrow { width: 0; height: 0; border-left: 7px solid transparent; border-right: 7px solid transparent; border-bottom: 14px solid #2f5f8a; pointer-events: none; }
.mk-arrow.k-campaign { border-bottom-color: #b93a26; }

@media (max-width: 720px) {
  /* Battle cards shrink to their title until tapped. */
  .mk-army { width: 170px; padding: 6px 8px; }
  .mk-army .army-title { margin-bottom: 0; font-size: 13px; }
  .mk-army:not(.selected) > :not(.army-title) { display: none; }
  .mk-army.selected { width: min(260px, calc(100vw - 40px)); }
  .mk-army .army-note { display: none; }
}
.maplibregl-marker.mk-army { z-index: 5; }
.maplibregl-marker.mk-route { z-index: 2; }

/* People, capitals, faith, inventions */
.mk-person, .mk-capital, .mk-faith, .mk-invention { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.mk-person i, .mk-faith i, .mk-invention i {
  flex: none; display: grid; place-items: center; font-style: normal;
  width: 20px; height: 20px; border-radius: 50%;
  font: 700 11px/1 var(--font-display); color: #fff; background: #6a4f8a; border: 1.5px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.35);
}
.mk-person span, .mk-capital span, .mk-faith span, .mk-invention span {
  font: 600 11px/1.15 var(--font-display); color: #1b2226; white-space: nowrap;
  text-shadow: 0 0 3px #f4f2ea, 0 0 3px #f4f2ea, 0 0 6px #f4f2ea;
}
.mk-person small, .mk-capital small { display: block; font: 500 9px/1.2 var(--font-body); color: #4d5a60; }
.mk-person.f-poet i, .mk-person.f-writer i { background: #9e4a6e; }
.mk-person.f-thinker i, .mk-person.f-scholar i { background: #6a4f8a; }
.mk-person.f-historian i { background: #7d6b4a; }
.mk-person.f-scientist i, .mk-person.f-engineer i, .mk-person.f-physician i { background: #2f7f8a; }
.mk-person.f-artist i { background: #b0805f; }
.mk-person.f-religious i { background: #b8862b; }
.mk-person.f-explorer i { background: #2f5f8a; }
.mk-capital i { font-style: normal; font-size: 18px; line-height: 1; color: #c9a227; text-shadow: 0 0 2px #3a2a00, 0 1px 3px rgba(0,0,0,.5); }
.mk-capital span { font-size: 12px; }
.mk-faith i { border-radius: 4px; background: #b8862b; }
.mk-faith.k-daoist i { background: #4f7f5a; }
.mk-faith.k-confucian i { background: #8a4f3a; }
.mk-faith.k-islam i { background: #2f7f6a; }
.mk-faith.k-christian i { background: #4a5f9a; }
.mk-faith.k-thought i { background: #6a4f8a; }
.mk-invention i { background: #2a7fb0; font-size: 12px; }
.mk-faith.old i, .mk-invention.old i { width: 8px; height: 8px; font-size: 0; opacity: 0.5; border-width: 1px; box-shadow: none; }

.atlas-pop .maplibregl-popup-content {
  background: var(--panel-solid); color: var(--ink); border-radius: 8px; padding: 10px 12px; box-shadow: var(--shadow);
  font: 13px/1.45 var(--font-body);
}
.atlas-pop .maplibregl-popup-tip { border-top-color: var(--panel-solid); border-bottom-color: var(--panel-solid); }
.atlas-pop .maplibregl-popup-close-button { color: var(--muted); font-size: 16px; }
.atlas-pop h4 { margin: 2px 0 4px; font: 700 16px/1.25 var(--font-display); }
.atlas-pop h4 span { font: 500 12px var(--font-body); color: var(--muted); }
.atlas-pop p { margin: 4px 0 0; }
.atlas-pop .pc-kind { font: 600 10px/1.2 var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; color: var(--cinnabar); }
.atlas-pop .pc-works b { font-size: 11px; color: var(--muted); margin-right: 4px; }
.atlas-pop .pc-meta { font-size: 12px; color: var(--muted); }
.atlas-pop a { color: var(--jade); margin-left: 6px; }
.atlas-pop blockquote { margin: 6px 0 0; padding: 4px 8px; border-left: 3px solid var(--cinnabar); font: 500 13px/1.6 var(--font-display); }
.atlas-pop blockquote em { display: block; font: italic 12px/1.4 var(--font-body); color: var(--muted); }

.pop-chart { grid-column: 1 / -1; margin-top: 8px; }
.pop-head { display: flex; justify-content: space-between; gap: 8px; font-size: 12px; }
.pop-head b { font-weight: 600; }
.pop-head span { font-family: var(--font-data); font-size: 11px; color: var(--muted); }
.pop-chart svg { display: block; width: 100%; height: 54px; margin-top: 2px; }
.pop-area { fill: var(--jade-soft); }
.pop-line { fill: none; stroke: var(--jade); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.pop-pt { fill: var(--jade); }
.pop-pt.estimate { fill: var(--panel-solid); stroke: var(--jade); stroke-width: 1.2; }
.pop-pt.on { fill: var(--cinnabar); }
.pop-now { stroke: var(--cinnabar); stroke-width: 1; stroke-dasharray: 2 2; vector-effect: non-scaling-stroke; }
@media (max-width: 720px) { .pop-chart { display: none; } }

/* Landscape names */
.mk-geo {
  pointer-events: none; white-space: nowrap;
  font: 500 12px/1 var(--font-display); letter-spacing: 0.25em;
  text-shadow: 0 0 3px rgba(250, 248, 240, .9), 0 0 6px rgba(250, 248, 240, .8);
}
.mk-geo.g-river, .mk-geo.g-lake { color: #2f6a8a; font-style: italic; letter-spacing: 0.1em; font-size: 11px; }
.mk-geo.g-sea { color: #3d6f8c; letter-spacing: 0.6em; font-size: 13px; }
.mk-geo.g-mountain { color: #6b4a2e; font-weight: 700; }
.mk-geo.g-plain { color: #4d6e35; }
.mk-geo.g-plateau, .mk-geo.g-desert, .mk-geo.g-corridor { color: #7a5a3a; font-size: 13px; letter-spacing: 0.4em; }
html:lang(en) .mk-geo { font-family: var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; font-size: 10px; }
html:lang(en) .mk-geo.g-river, html:lang(en) .mk-geo.g-lake { text-transform: none; font-size: 11px; }

/* Decluttering: folded markers, hidden labels, "+N" badges and their list */
.maplibregl-marker.dc-hide { visibility: hidden; pointer-events: none; }
.dc-nolabel > span { visibility: hidden; }
.mk-geo.dc-nolabel { visibility: hidden; }
.dc-nolabel:hover > span { visibility: visible; }
.maplibregl-marker:has(.dc-more) { z-index: 3; }
.dc-more {
  position: absolute; left: -10px; top: -15px; z-index: 1;
  min-width: 16px; height: 16px; padding: 0 4px; border-radius: 8px;
  display: grid; place-items: center; cursor: pointer; visibility: visible;
  font: 700 10px/1 var(--font-body); color: #fff; background: #1b2226; border: 1.5px solid #f4f2ea;
  box-shadow: 0 1px 3px rgba(0,0,0,.4);
}
.mk-event .dc-more { left: -8px; top: -12px; }
.dc-list { list-style: none; margin: 6px 0 0; padding: 0; max-height: 260px; overflow-y: auto; }
.dc-list button {
  display: flex; align-items: center; gap: 8px; width: 100%; padding: 5px 4px; border: 0; border-radius: 6px;
  background: none; text-align: left; cursor: pointer; font: 500 13px/1.25 var(--font-display); color: inherit;
}
.dc-list button:hover { background: rgba(31, 92, 78, 0.1); }
.dc-list small { display: block; font: 500 10px var(--font-body); color: var(--muted); }
.dc-ico { flex: none; width: 22px; height: 22px; display: grid; place-items: center; }
.dc-ico i { position: static; }
.dc-ico.old i { width: 12px; height: 12px; font-size: 0; }

/* Satellite look: light names with a dark halo read better on imagery */
.sat .mk-geo { color: #f4f1e6; text-shadow: 0 0 3px rgba(10, 20, 15, .9), 0 0 6px rgba(10, 20, 15, .6); }
.sat .mk-geo.g-river, .sat .mk-geo.g-lake, .sat .mk-geo.g-sea { color: #c9ecf7; }
.sat .mk-geo.g-mountain { color: #fff2d8; }

/* Passes (关隘) */
.mk-pass { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.mk-pass i {
  flex: none; display: grid; place-items: center; width: 20px; height: 20px; border-radius: 3px;
  font: 700 12px/1 var(--font-display); font-style: normal; color: #f4f2ea; background: #4a3b30;
  border: 1.5px solid #e8dcc0; box-shadow: 0 1px 4px rgba(0,0,0,.4);
}
.mk-pass.k-wall i { background: #6b4a2e; }
.mk-pass.k-gate i { background: #3d4f5c; }
.mk-pass span {
  font: 700 11px/1.15 var(--font-display); color: #2b2018; white-space: nowrap;
  text-shadow: 0 0 3px #f4f2ea, 0 0 3px #f4f2ea, 0 0 6px #f4f2ea;
}
.atlas-pop .pc-battles { margin: 2px 0 0; padding: 0; list-style: none; font-size: 13px; }
.atlas-pop .pc-battles span { font: 500 11px var(--font-mono, monospace); color: var(--cinnabar); margin-right: 4px; }

/* Ledger tabs and the ruler list */
.ledger-tabs { display: flex; gap: 2px; }
.ledger-tabs .tab {
  border: 0; background: none; cursor: pointer; padding: 2px 8px 4px; margin: -2px 0;
  font: 600 13px/1 var(--font-body); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
  border-bottom: 2px solid transparent;
}
.ledger-tabs .tab[aria-selected="true"] { color: inherit; border-bottom-color: var(--cinnabar); }
.ledger-tabs .tab:first-child { padding-left: 0; }
.rulers { overflow-y: auto; min-height: 0; padding: 8px 0 6px; }
.rulers[hidden] { display: none; }
.rl-pick { display: flex; align-items: center; gap: 8px; padding: 8px 16px 6px; margin-top: -8px; font-size: 12px; color: var(--muted); position: sticky; top: -8px; z-index: 2; background: var(--panel-solid); border-bottom: 1px solid var(--rule); }
.rl-pick select {
  flex: 1; min-width: 0; padding: 5px 8px; border-radius: 6px; border: 1px solid var(--rule);
  background: var(--panel-solid); color: inherit; font: 500 14px var(--font-display);
}
.rl-hint { margin: 6px 16px 4px; font-size: 11px; color: var(--muted); }
.rl-empty { margin: 12px 16px; color: var(--muted); font-size: 13px; }
.rl-list { list-style: none; margin: 0; padding: 0; }
.rl {
  display: grid; grid-template-columns: 72px 1fr auto; gap: 1px 10px; align-items: baseline;
  width: 100%; padding: 7px 16px; border: 0; background: none; color: inherit; text-align: left; cursor: pointer; font: inherit;
}
.rl:hover { background: var(--jade-soft); }
.rl-years { grid-row: span 2; font: 500 11px/1.35 var(--font-data); font-variant-numeric: tabular-nums; color: var(--cinnabar); }
.rl-name { font: 600 14px/1.3 var(--font-display); }
.rl-sub { grid-column: 2; font-size: 12px; color: var(--muted); }
.rl-len { grid-column: 3; grid-row: 1; font-size: 11px; color: var(--muted); }
.rl.future { opacity: 0.5; }
.rl.current { background: var(--jade-soft); box-shadow: inset 3px 0 0 var(--jade); }
.rl.scoped { box-shadow: inset 3px 0 0 var(--cinnabar); }
.zlevel.scoped { color: var(--cinnabar); font-family: var(--font-display); max-width: 9em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Official roads (官道) */
.mk-road {
  cursor: pointer; white-space: nowrap; font: 600 11px/1 var(--font-display); letter-spacing: 0.15em; color: #4a3424;
  padding: 2px 6px; border-radius: 3px; background: rgba(243, 233, 207, 0.82); border: 1px solid rgba(74, 52, 36, 0.35);
}
.mk-road.k-imperial { color: #8a2f1c; }
.mk-road.k-trade { color: #7a5a1e; font-style: italic; }
.mk-road.dc-nolabel { visibility: hidden; }
html:lang(en) .mk-road { font-family: var(--font-body); letter-spacing: 0.02em; }

/* Landscape names: upright along north-south ranges; finer names smaller */
.mk-geo.vertical { text-align: center; letter-spacing: 0; line-height: 1.3; }
.mk-geo.detail { font-size: 11px; letter-spacing: 0.18em; }
.mk-geo.g-mountain.detail { font-size: 12px; }
.sat .mk-geo.g-mountain { color: #ffd98a; font-weight: 700; text-shadow: 0 0 2px #1d1408, 0 0 4px rgba(29, 20, 8, .9), 0 0 8px rgba(29, 20, 8, .6); }
.sat .mk-geo.g-plain, .sat .mk-geo.g-plateau, .sat .mk-geo.g-desert, .sat .mk-geo.g-corridor { color: #fff3d6; }

/* Elite groups (豪族/士人集团) */
.mk-clan { display: flex; align-items: center; gap: 4px; cursor: pointer; white-space: nowrap; }
.mk-clan i {
  width: 18px; height: 18px; border-radius: 4px; display: grid; place-items: center; font: 600 11px/1 var(--font-display); font-style: normal;
  color: #fff; background: var(--c); box-shadow: 0 0 0 1.5px rgba(255, 255, 255, 0.85);
}
.mk-clan span {
  font: 600 12px/1 var(--font-display); color: var(--c); padding: 2px 5px; border-radius: 3px;
  background: rgba(250, 246, 236, 0.88); border: 1px dashed var(--c);
}
html:lang(en) .mk-clan span { font-family: var(--font-body); }

/* City card: events that happened there */
.atlas-pop .pc-events { max-height: 190px; overflow-y: auto; margin-bottom: 6px; }
.atlas-pop .pc-events button {
  all: unset; display: block; width: 100%; box-sizing: border-box; cursor: pointer; padding: 3px 4px; border-radius: 3px; line-height: 1.35;
}
.atlas-pop .pc-events button:hover, .atlas-pop .pc-events button:focus-visible { background: var(--jade-soft); }
.atlas-pop .pc-events button:not(.now) { color: var(--muted); }
.atlas-pop .pc-events button.sel { box-shadow: inset 3px 0 0 var(--cinnabar); }

/* Cards (popups) always sit above map labels, some of which carry their own z-index. */
.maplibregl-popup { z-index: 10; }

/* 名人 tab: people alive this year marked, those already dead slightly faded, not yet born dimmed */
.rl.pp.current { background: none; box-shadow: inset 3px 0 0 var(--jade); }
.rl.pp:not(.current):not(.future) { opacity: 0.75; }
.rl.pp .rl-sub { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pp-groups { display: flex; flex-wrap: wrap; gap: 4px; padding: 8px 16px 6px; margin-top: -8px; position: sticky; top: -8px; z-index: 2; background: var(--panel-solid); border-bottom: 1px solid var(--rule); }
.pp-groups .chip { font-size: 11px; padding: 2px 8px; }
.mk-person.f-general i { background: #8a2f1c; }
.mk-person.f-statesman i { background: #1f5c4e; }

/* Great Walls (长城) */
.mk-wall { color: #5a4030; border-color: rgba(90, 64, 48, 0.5); background: rgba(239, 226, 194, 0.9); }

/* Event filter: detail level and category tags */
.ev-filter { padding: 8px 16px 8px; border-bottom: 1px solid var(--rule); display: grid; gap: 6px; }
.ev-filter[hidden] { display: none; }
.ef-levels { display: inline-flex; justify-self: start; border: 1px solid var(--rule); border-radius: 6px; overflow: hidden; }
.ef-levels button { appearance: none; border: 0; background: transparent; color: var(--muted); font: 600 12px/1 var(--font-body); padding: 5px 12px; cursor: pointer; }
.ef-levels button + button { border-left: 1px solid var(--rule); }
.ef-levels button[aria-pressed="true"] { background: var(--jade); color: #fff; }
.ef-cats { display: flex; flex-wrap: wrap; gap: 4px; }
.ef-cats .chip { font-size: 11px; padding: 2px 8px; }
.cat-reform { background: rgba(47, 111, 176, 0.12); color: #2f6fb0; }
.cat-rebellion { background: rgba(160, 64, 120, 0.12); color: #a04078; }
.story-tags { display: flex; flex-wrap: wrap; gap: 4px; margin: 0 0 10px; }
.story-tags .chip { font-size: 12px; padding: 2px 8px; }
.story-tags .tag-city { color: var(--cinnabar); }
.ef-country { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); }
.ef-country select { flex: 1; min-width: 0; padding: 4px 8px; border-radius: 6px; border: 1px solid var(--rule); background: var(--panel-solid); color: inherit; font: 500 13px var(--font-display); }

@media (max-width: 720px) {
  .lang-switch { top: 10px; right: 84px; }
  .era-more { width: 68px; text-align: center; }
  .era-name { padding-right: 160px; }
  .era-name { padding-right: 150px; }
  html:lang(en) .lg { padding-left: 0; }
  html:lang(en) .lg > span { position: static; width: 100%; }
  .ev-filter { padding: 6px 12px; gap: 5px; }
  .ef-cats { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .ef-cats .chip { flex: none; }
}

/* Drag preview over the timeline */
.scrub-tag {
  position: absolute; bottom: calc(100% + 10px); transform: translateX(-50%); z-index: 5; pointer-events: none;
  background: var(--ink); color: var(--panel-solid); border-radius: 8px; padding: 6px 10px; white-space: nowrap;
  font: 500 13px/1.3 var(--font-body); box-shadow: var(--shadow); text-align: center;
}
.scrub-tag[hidden] { display: none; }
.scrub-tag b { font: 700 16px/1.2 var(--font-display); }
.scrub-tag span { font-family: var(--font-data); font-variant-numeric: tabular-nums; }
.scrub-tag small { display: block; max-width: 220px; white-space: normal; font-size: 11px; opacity: 0.8; }
.scrub-tag::after { content: ""; position: absolute; left: 50%; bottom: -5px; margin-left: -5px; border: 5px solid transparent; border-bottom: 0; border-top-color: var(--ink); }
.band.scrub { background: var(--jade-soft); }
.band.scrub b { color: var(--jade); }
.bands { touch-action: none; }
@media (max-width: 720px) {
  .bands { height: 28px; }
  .band b { line-height: 24px; }
  .ticks { top: 28px; }
  input[type=range] { height: 28px; margin-top: 8px; }
}
.band.tight > * { visibility: hidden; }
.band.era-band { overflow: visible; padding: 0; }
.band.era-band > b { position: absolute; top: 0; left: 50%; transform: translateX(-50%); white-space: nowrap; }
/* Bands whose label was dropped also lose their divider, so a crowded rail shows only the named periods. */
.band.era-band.tight { border-left-color: transparent; }
@media (max-width: 720px) {
  /* Phone, whole-history view: no event ticks; the drag tag does the rest. */
  [data-zoom="all"] .ticks { display: none; }
  [data-zoom="all"] .bands { height: 26px; }
}

/* The track scrolls sideways when it is wider than the rail (phones, whole-history view). */
.track-view { min-width: 0; overflow-x: auto; overflow-y: hidden; scrollbar-width: none; }
.track-view::-webkit-scrollbar { display: none; }
@media (max-width: 720px) {
  [data-zoom="all"] .track { touch-action: none; }
  [data-zoom="all"] input[type=range] { pointer-events: none; }
  /* Fade the edges so it reads as a strip that continues off-screen. */
  [data-zoom="all"] .track-view { mask-image: linear-gradient(90deg, transparent, #000 14px, #000 calc(100% - 14px), transparent); }
}