:root {
  --paper: #f3eee4;
  --paper2: #ebe4d6;
  --ink: #2b2622;
  --ink2: #5d554c;
  --muted: #8d847a;
  --verm: #b5452f;
  --gold: #c6952b;
  --jade: #2f7d4a;
  --teal: #1f7a85;
  --hair: rgba(43, 38, 34, 0.12);
  --shadow: 0 10px 30px rgba(43, 38, 34, 0.14), 0 1px 2px rgba(43, 38, 34, 0.08);
  --serif: 'Songti SC', 'Noto Serif SC', 'STSong', 'SimSun', serif;
  --sans: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --kai: 'STKaiti', 'Kaiti SC', 'KaiTi', var(--serif);
  --u: 1;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--sans); color: var(--ink); overflow: hidden;
  background: radial-gradient(1200px 600px at 20% -10%, rgba(255, 250, 240, .9), transparent 60%), var(--paper);
}
button { font: inherit; cursor: pointer; }
a { color: var(--verm); }
.hidden { display: none !important; }

#shell { height: 100vh; height: 100dvh; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; }

/* ---------- header ---------- */
#nav {
  position: relative; z-index: 30; display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 7px 16px; border-bottom: 1px solid var(--hair); background: rgba(243, 238, 228, .92); backdrop-filter: blur(6px);
}
.brand { display: flex; align-items: baseline; gap: 10px; white-space: nowrap; }
.brand .seal { font-family: Georgia, 'Times New Roman', var(--serif); font-style: italic; font-weight: 700; font-size: 25px; color: var(--verm); line-height: 1; letter-spacing: .04em; }
.brand .sub { font-family: var(--serif); font-size: 12px; color: var(--ink2); letter-spacing: .06em; }
.brand .sub em { font-style: normal; color: var(--muted); margin-left: 6px; }
.tools { display: flex; align-items: center; gap: 6px; overflow-x: auto; scrollbar-width: none; }
.chip {
  display: inline-flex; align-items: center; gap: 5px; padding: 5px 11px; border-radius: 999px; white-space: nowrap;
  border: 1px solid rgba(43, 38, 34, .16); background: rgba(255, 255, 255, .6); color: var(--ink); font-size: 13px; text-decoration: none;
  transition: .15s;
}
.chip:hover { border-color: var(--verm); color: var(--verm); }
.chip.link { color: var(--ink2); font-size: 12.5px; }
.chip.toggle input { accent-color: var(--verm); margin: 0; }
.chip.toggle.fix input { accent-color: var(--jade); }
.chip.toggle.ref input { accent-color: var(--teal); }
.chip.toggle:has(input:checked) { background: #fff; font-weight: 600; }
.chip.err:has(input:checked) { border-color: var(--verm); color: var(--verm); }
.chip.fix:has(input:checked) { border-color: var(--jade); color: var(--jade); }
.chip.ref:has(input:checked) { border-color: var(--teal); color: var(--teal); }
.divider { width: 1px; height: 18px; background: rgba(43, 38, 34, .16); margin: 0 2px; flex-shrink: 0; }
.pop {
  position: absolute; top: calc(100% + 6px); right: 16px; width: 300px; padding: 10px 12px; z-index: 50;
  background: rgba(251, 248, 241, .98); border: 1px solid rgba(181, 69, 47, .32); border-radius: 12px; box-shadow: var(--shadow);
}
.pop-h { font-size: 11px; color: var(--muted); letter-spacing: .08em; margin: 4px 0 6px; }
.pop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px; font-size: 13px; margin-bottom: 8px; }
.pop-grid input { accent-color: var(--verm); }

/* ---------- body ---------- */
#body { display: grid; grid-template-columns: minmax(0, 1fr) 372px; min-height: 0; }
#stage { position: relative; overflow: hidden; background: #e7e0d3; touch-action: none; }
#map { width: 100%; height: 100%; display: block; cursor: grab; user-select: none; }
#map.dragging { cursor: grabbing; }

/* map styles */
.vs { vector-effect: non-scaling-stroke; }
#g-provinces path { fill: none; stroke: #9d917e; stroke-width: .7px; stroke-dasharray: 3 3; opacity: .55; }
#g-provinces text { font-size: calc(var(--u) * 11px); fill: #8d847a; text-anchor: middle; }
#g-rivers path.r { fill: none; stroke: #7fa2ad; stroke-linecap: round; stroke-linejoin: round; opacity: .85; }
#g-rivers path.l { fill: #c9dbdc; stroke: #7fa2ad; stroke-width: .5px; }
#g-rivers text { font-family: var(--kai); font-size: calc(var(--u) * 12px); fill: #4e7f8c; letter-spacing: .2em; }
#g-polities path { stroke-width: 1px; stroke-linejoin: round; }
#g-polities path.main { stroke-width: 2px; }
#g-regions path { fill: none; stroke: #6d4a35; stroke-width: 1.2px; stroke-dasharray: 6 3 1.5 3; opacity: .8; }
#g-prefs path { fill: none; stroke: #7d6a58; stroke-width: .55px; opacity: .55; }
#g-corridors path.wall { fill: none; stroke: #8b5a2b; stroke-width: 2.2px; stroke-dasharray: 1.5 2.5; stroke-linecap: round; }
#g-corridors path.road { fill: none; stroke: #b07a2a; stroke-width: 1.4px; stroke-dasharray: 6 4; }
#g-corridors path.canal { fill: none; stroke: #2e6f9e; stroke-width: 2px; }
#g-corridors path.sea { fill: none; stroke: #2e6f9e; stroke-width: 1.2px; stroke-dasharray: 2 4; }
#g-corridors text { font-size: calc(var(--u) * 10.5px); fill: #7a5228; font-family: var(--serif); }
#g-hover path { fill: rgba(181, 69, 47, .10); stroke: var(--verm); stroke-width: 1.6px; pointer-events: none; }
#g-hover path.pref { fill: rgba(198, 149, 43, .16); stroke: var(--gold); }

#g-labels text { paint-order: stroke; stroke: rgba(246, 241, 230, .9); stroke-linejoin: round; pointer-events: none; text-anchor: middle; dominant-baseline: middle; }
#g-labels .pl-main { font-family: var(--kai); font-size: calc(var(--u) * 30px); fill: #6b2a1c; stroke-width: calc(var(--u) * 4px); letter-spacing: .25em; opacity: .82; }
#g-labels .pl-nb { font-family: var(--serif); font-size: calc(var(--u) * 12.5px); fill: #5a4e43; stroke-width: calc(var(--u) * 3px); }
#g-labels .rg { font-family: var(--serif); font-weight: 700; font-size: calc(var(--u) * 13px); fill: #6d4a35; stroke-width: calc(var(--u) * 3px); letter-spacing: .1em; }
#g-labels .pf { font-family: var(--serif); font-size: calc(var(--u) * 10.5px); fill: #6a5a4a; stroke-width: calc(var(--u) * 2.5px); }
#g-labels .fixed { fill: var(--jade) !important; font-weight: 700; }
#g-labels .fixed-del { fill: #a99c8d !important; text-decoration: line-through; }

#g-settles text { font-family: var(--serif); font-size: calc(var(--u) * 12px); fill: #2b2622; paint-order: stroke; stroke: rgba(246, 241, 230, .95); stroke-width: calc(var(--u) * 3px); pointer-events: none; }
#g-settles text.cap { font-weight: 700; font-size: calc(var(--u) * 13px); fill: #7a1f12; }
#g-settles text.fixed { fill: var(--jade); font-weight: 700; }
#g-settles .dot { fill: #fff; stroke: #2b2622; stroke-width: 1.2px; cursor: pointer; }
#g-settles .dot.cap { fill: var(--verm); stroke: #fff; }
#g-settles .dot.fixed { fill: var(--jade); stroke: #fff; }
#g-ref .rp { fill: var(--teal); opacity: .8; cursor: pointer; }
#g-ref text { font-size: calc(var(--u) * 10px); fill: var(--teal); paint-order: stroke; stroke: rgba(246, 241, 230, .95); stroke-width: calc(var(--u) * 2.5px); pointer-events: none; }
#g-milestones .ms { fill: var(--gold); stroke: #fff; stroke-width: 1.2px; cursor: pointer; }
#g-milestones .ms.on { fill: var(--verm); }
#g-milestones .ring { fill: none; stroke: var(--verm); stroke-width: 1.5px; animation: pulse 1.8s ease-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes pulse { 0% { opacity: .9; transform: scale(.6); } 100% { opacity: 0; transform: scale(2.4); } }
#g-errata .em { cursor: pointer; }
#g-errata .em circle.o { fill: rgba(181, 69, 47, .14); stroke: var(--verm); stroke-width: 1.6px; }
#g-errata .em text { font-family: var(--kai); fill: var(--verm); font-size: calc(var(--u) * 12px); text-anchor: middle; dominant-baseline: central; pointer-events: none; }
#g-errata .em.lv-待核 circle.o { stroke: #8a6d1f; fill: rgba(198, 149, 43, .16); }
#g-errata .em.sel circle.o { stroke-width: 3px; fill: rgba(181, 69, 47, .3); }
#g-errata line.mv { stroke: var(--jade); stroke-width: 1.6px; stroke-dasharray: 4 3; }
#g-errata circle.right { fill: var(--jade); stroke: #fff; stroke-width: 1.2px; }
#g-errata text.lb { font-size: calc(var(--u) * 10.5px); fill: var(--verm); paint-order: stroke; stroke: rgba(246, 241, 230, .95); stroke-width: calc(var(--u) * 2.5px); pointer-events: none; }

.tip {
  position: absolute; z-index: 20; max-width: 300px; pointer-events: none; padding: 8px 10px; border-radius: 10px; font-size: 12.5px; line-height: 1.55;
  background: rgba(251, 248, 241, .97); border: 1px solid rgba(43, 38, 34, .15); box-shadow: var(--shadow);
}
.tip b { font-family: var(--serif); font-size: 14px; }
.tip .k { color: var(--muted); margin-right: 4px; }
.tip .e { color: var(--verm); }
.zoom-ctl { position: absolute; left: 12px; top: 12px; display: flex; flex-direction: column; gap: 4px; z-index: 10; }
.zoom-ctl button { width: 32px; height: 32px; border-radius: 8px; border: 1px solid rgba(43, 38, 34, .18); background: rgba(255, 255, 255, .85); font-size: 16px; }
.zoom-ctl button:hover { color: var(--verm); border-color: var(--verm); }
.legend {
  position: absolute; left: 12px; bottom: 12px; z-index: 10; padding: 7px 10px; border-radius: 10px; font-size: 11.5px; color: var(--ink2);
  background: rgba(251, 248, 241, .9); border: 1px solid var(--hair); display: flex; flex-wrap: wrap; gap: 4px 12px; max-width: 520px;
}
.legend i { display: inline-block; width: 18px; height: 0; vertical-align: middle; margin-right: 4px; border-top: 2px solid; }
.legend .sw { width: 10px; height: 10px; border-radius: 50%; border: none; display: inline-block; margin-right: 4px; vertical-align: -1px; }
.scs { position: absolute; right: 12px; bottom: 12px; z-index: 10; background: rgba(251, 248, 241, .95); border: 1px solid #a89f90; border-radius: 8px; padding: 4px 6px; text-align: center; }
.scs-t { font-family: var(--serif); font-size: 12px; font-weight: 700; }
.scs-n { font-size: 9px; color: var(--muted); width: 104px; line-height: 1.3; }

/* ---------- pane ---------- */
#pane { border-left: 1px solid var(--hair); background: rgba(251, 248, 241, .9); display: flex; flex-direction: column; min-height: 0; }
.tabs { display: flex; border-bottom: 1px solid var(--hair); padding: 0 8px; }
.tab { flex: 1; border: none; background: none; padding: 10px 0 8px; font-size: 14px; color: var(--ink2); border-bottom: 2px solid transparent; }
.tab.on { color: var(--verm); border-color: var(--verm); font-weight: 700; }
.tab b { display: inline-block; min-width: 20px; padding: 0 5px; border-radius: 10px; background: var(--verm); color: #fff; font-size: 11px; font-weight: 600; }
.tabbody { flex: 1; overflow-y: auto; padding: 14px 16px 18px; }
.dyn-head { display: flex; gap: 12px; align-items: center; }
.dyn-badge { width: 54px; height: 54px; border-radius: 12px; color: #fff; display: grid; place-items: center; font-family: var(--kai); font-size: 22px; flex-shrink: 0; box-shadow: var(--shadow); }
#dyn-title { font-family: var(--serif); font-size: 22px; }
.dyn-seat { font-size: 12px; color: var(--muted); margin-top: 3px; }
.phase { margin-top: 12px; font-family: var(--serif); font-size: 14.5px; line-height: 1.6; color: #4a2a1e; background: #fff; border-left: 3px solid var(--verm); padding: 8px 10px; border-radius: 0 8px 8px 0; }
.phase-note { font-size: 11.5px; color: var(--muted); margin-top: 6px; }
.summary { font-size: 13px; line-height: 1.75; color: var(--ink2); }
.sec-h { font-size: 11.5px; color: var(--muted); letter-spacing: .1em; margin: 12px 0 6px; }
.polity-list { display: flex; flex-wrap: wrap; gap: 5px; }
.polity-list span { font-size: 12px; padding: 2px 8px; border-radius: 999px; background: #fff; border: 1px solid var(--hair); }
.polity-list span i { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 4px; }
.polity-list span.main { font-weight: 700; border-color: var(--verm); }

.event-list .ev { display: grid; grid-template-columns: 62px 1fr; gap: 8px; padding: 8px 6px; border-bottom: 1px dashed var(--hair); cursor: pointer; border-radius: 6px; }
.event-list .ev:hover { background: #fff; }
.event-list .ev.on { background: #fff4ea; }
.event-list .ev .y { font-family: var(--serif); font-weight: 700; color: var(--verm); font-size: 13px; }
.event-list .ev .h { font-size: 13px; line-height: 1.55; }
.event-list .ev .s { font-size: 11.5px; color: var(--muted); }
.event-list .ev.err .h::after { content: ' ⚠'; color: var(--verm); }

.err-intro { font-size: 12px; color: var(--ink2); line-height: 1.6; }
.err-filter { display: flex; flex-wrap: wrap; gap: 4px 12px; margin: 8px 0 6px; }
.err-filter input { accent-color: var(--verm); }
.err-legend { font-size: 11px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 4px 6px; align-items: center; }
.lv { font-style: normal; display: inline-block; font-size: 11px; padding: 0 6px; border-radius: 4px; color: #fff; margin-left: 4px; }
.lv-高 { background: #b5452f; } .lv-中 { background: #d27a2c; } .lv-低 { background: #8d847a; } .lv-待核 { background: #b08d2a; }
.err-list { margin-top: 10px; }
.err { background: #fff; border: 1px solid var(--hair); border-radius: 10px; padding: 9px 11px; margin-bottom: 8px; cursor: pointer; transition: .15s; }
.err:hover { border-color: rgba(181, 69, 47, .5); }
.err.sel { border-color: var(--verm); box-shadow: 0 0 0 2px rgba(181, 69, 47, .15); }
.err .t { font-weight: 700; font-size: 13.5px; line-height: 1.45; }
.err .t .id { font-family: ui-monospace, Menlo, monospace; font-size: 11px; color: var(--muted); font-weight: 400; margin-right: 4px; }
.err .meta { font-size: 11px; color: var(--muted); margin: 3px 0 5px; }
.err .row { font-size: 12.3px; line-height: 1.6; margin-top: 3px; }
.err .row .k { display: inline-block; font-size: 11px; padding: 0 5px; border-radius: 3px; margin-right: 4px; }
.err .row .k.now { background: #f6e1db; color: #8a2f1e; }
.err .row .k.fix { background: #dcefe2; color: #1f5c35; }
.err .src { font-size: 11px; margin-top: 5px; color: var(--muted); }
.err .src a { margin-right: 8px; }
.err-empty { font-size: 13px; color: var(--muted); padding: 20px 0; text-align: center; }

/* ---------- timeline ---------- */
#timeline { border-top: 1px solid var(--hair); background: rgba(243, 238, 228, .96); padding: 8px 16px 6px; }
.tl-row { display: flex; align-items: center; gap: 8px; }
.tl-btn { width: 32px; height: 32px; border-radius: 50%; border: 1px solid rgba(43, 38, 34, .18); background: #fff; color: var(--ink); flex-shrink: 0; }
.tl-btn:hover { color: var(--verm); border-color: var(--verm); }
.tl-year { position: relative; width: 112px; text-align: center; flex-shrink: 0; }
#year-text { font-family: var(--serif); font-weight: 700; font-size: 19px; color: var(--verm); cursor: text; }
#year-input { display: none; width: 100px; font-size: 16px; text-align: center; }
.tl-year.editing #year-text { display: none; }
.tl-year.editing #year-input { display: inline-block; }
.tl-track { position: relative; flex: 1; height: 46px; }
.bands { position: absolute; left: 0; right: 0; top: 2px; height: 18px; display: flex; border-radius: 4px; overflow: hidden; }
.bands div { height: 100%; font-size: 11px; color: #fff; display: flex; align-items: center; justify-content: center; overflow: hidden; white-space: nowrap; cursor: pointer; opacity: .78; border-right: 1px solid rgba(255, 255, 255, .5); font-family: var(--serif); }
.bands div:hover, .bands div.on { opacity: 1; }
.bands div.err-dyn { box-shadow: inset 0 -3px 0 #fff3; }
#slider { position: absolute; left: 0; right: 0; top: 18px; width: 100%; margin: 0; accent-color: var(--verm); }
.ticks { position: absolute; left: 0; right: 0; top: 36px; height: 10px; font-size: 9.5px; color: var(--muted); }
.ticks span { position: absolute; transform: translateX(-50%); }
.credit { font-size: 10.5px; color: var(--muted); margin-top: 3px; text-align: center; }

@media (max-width: 900px) {
  #body { grid-template-columns: 1fr; grid-template-rows: minmax(0, 1fr) 40vh; }
  #pane { border-left: none; border-top: 1px solid var(--hair); }
  .brand .sub { display: none; }
  .legend { display: none; }
}