:root {
  --paper: #ffffff;
  --ink: #111111;
  --ink-2: #555555;
  --ink-3: #767676;
  --rule: #111111;
  --rule-soft: #e2e2e2;
  --wash: #f4f4f2;
  --blue: #1f3fd9;
  --hue: #c2410c;
  --fell: #c2410c;
  --flat: #b9b9b9;
  --rose: #4d4d4d;
  --sans: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --side: 340px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.5 var(--sans);
}
a { color: var(--blue); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; }

.layout {
  display: grid;
  grid-template-columns: var(--side) minmax(0, 1fr);
  min-height: calc(100vh - var(--appnav-h, 0px));
  border-top: 4px solid var(--hue);
}

/* ---------- side column ---------- */
.side {
  border-right: 1px solid var(--rule-soft);
  background: var(--paper);
}
.side-inner {
  position: sticky;
  top: var(--appnav-h, 0px);
  max-height: calc(100vh - var(--appnav-h, 0px));
  overflow-y: auto;
  padding: 24px 22px 32px;
}
.title { font-size: 28px; line-height: 1.1; margin: 0 0 12px; }
.lede { margin: 0 0 20px; color: var(--ink-2); }

.side h2 { font-size: 13px; margin: 22px 0 8px; color: var(--ink); }

.search { position: relative; }
.search label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 6px; }
.search input {
  width: 100%;
  font: inherit;
  padding: 9px 10px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
}
.results {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--ink);
  border-top: 0;
  max-height: 280px;
  overflow-y: auto;
  position: absolute;
  left: 0; right: 0;
  z-index: 5;
  background: var(--paper);
}
.results[hidden] { display: none; }
.results li { padding: 7px 10px; cursor: pointer; font-size: 14px; display: flex; justify-content: space-between; gap: 10px; }
.results li small { color: var(--ink-3); font-variant-numeric: tabular-nums; white-space: nowrap; }
.results li[aria-selected="true"], .results li:hover { background: var(--wash); }

.readout { margin-top: 18px; border-top: 1px solid var(--ink); padding-top: 12px; }
.readout h3 { font-size: 18px; margin: 0 0 2px; line-height: 1.2; }
.readout .code { color: var(--ink-3); font-size: 13px; margin: 0 0 12px; }
.facts { margin: 0; display: grid; grid-template-columns: 1fr; gap: 10px; }
.facts div { border-bottom: 1px solid var(--rule-soft); padding-bottom: 8px; }
.facts dt { font-size: 12px; color: var(--ink-2); }
.facts dd { margin: 2px 0 0; font-size: 15px; font-variant-numeric: tabular-nums; }
.facts dd b { font-size: 18px; }
.facts dd .sub { display: block; font-size: 12px; color: var(--ink-3); }
.up { color: var(--ink); }
.down { color: var(--hue); }

.seg { display: flex; border: 1px solid var(--ink); }
.seg button {
  flex: 1;
  font: inherit;
  font-size: 13px;
  padding: 6px 4px;
  border: 0;
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
}
.seg button + button { border-left: 1px solid var(--ink); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

.key { list-style: none; padding: 0; margin: 0; font-size: 13px; color: var(--ink-2); }
.key li { display: flex; align-items: center; gap: 8px; margin: 4px 0; }
.dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; flex: none; }
.dot.fell { background: var(--fell); }
.dot.flat { background: var(--flat); }
.dot.rose { background: var(--rose); }
.note { font-size: 13px; color: var(--ink-2); margin: 8px 0; }

/* ---------- main ---------- */
.main { min-width: 0; padding: 20px 28px 40px; }
.panel-h { font-size: 20px; margin: 0 0 4px; }
.panel-sub { margin: 0 0 10px; color: var(--ink-2); font-size: 14px; max-width: 70ch; }

.scatter-wrap { position: relative; }
#scatter { display: block; width: 100%; height: min(72vh, 680px); min-height: 360px; touch-action: manipulation; }
#scatter text { font-family: var(--sans); fill: var(--ink-2); font-size: 12px; }
#scatter .axis-title { fill: var(--ink); font-size: 12px; font-weight: 700; }
#scatter .grid { stroke: var(--rule-soft); }
#scatter .base { stroke: var(--ink); }
#scatter .pt { stroke: #fff; stroke-width: 0.6; fill-opacity: 0.78; cursor: pointer; }
#scatter .pt.fell { fill: var(--fell); }
#scatter .pt.flat { fill: var(--flat); }
#scatter .pt.rose { fill: var(--rose); }
#scatter .pt.none { fill: #dcdcdc; }
#scatter .pt.dim { fill-opacity: 0.25; }
#scatter .sel-ring { fill: none; stroke: var(--blue); stroke-width: 2.5; pointer-events: none; }
#scatter .sel-label { fill: var(--blue); font-weight: 700; font-size: 13px; paint-order: stroke; stroke: #fff; stroke-width: 4px; stroke-linejoin: round; }
#scatter .strip { fill: var(--wash); }

.tip {
  position: absolute;
  pointer-events: none;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 7px 9px;
  font-size: 13px;
  line-height: 1.35;
  max-width: 260px;
  z-index: 3;
}
.tip[hidden] { display: none; }
.tip b { display: block; margin-bottom: 2px; }
.tip span { display: block; color: var(--ink-2); font-variant-numeric: tabular-nums; }

.bins { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin: 28px 0 8px; }
.bins h3 { font-size: 15px; margin: 0 0 4px; }
.bins p { margin: 0 0 8px; font-size: 13px; color: var(--ink-2); }
.bins svg { width: 100%; display: block; }
.bins svg text { font-family: var(--sans); font-size: 12px; fill: var(--ink-2); font-variant-numeric: tabular-nums; }
.bins svg .lab { fill: var(--ink); }
.bins svg .bar-down { fill: var(--fell); }
.bins svg .bar-up { fill: var(--rose); }
.bins svg .zero { stroke: var(--ink); }

/* ---------- tasks ---------- */
.tasks { margin-top: 36px; border-top: 1px solid var(--ink); padding-top: 16px; }
.task-summary { display: flex; flex-wrap: wrap; gap: 18px; margin: 4px 0 14px; font-size: 13px; color: var(--ink-2); }
.task-summary b { color: var(--ink); font-size: 15px; }
.task-head, .task {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 130px 150px 120px;
  gap: 14px;
  align-items: start;
}
.task-head { font-size: 12px; color: var(--ink-2); border-bottom: 1px solid var(--ink); padding: 0 0 6px; font-weight: 700; }
.task { border-bottom: 1px solid var(--rule-soft); padding: 9px 0; font-size: 14px; }
.task .txt small { display: block; color: var(--ink-3); font-size: 12px; margin-top: 2px; }
.chip { display: inline-block; font-size: 12px; padding: 1px 6px; border: 1px solid var(--ink); white-space: nowrap; }
.chip.e1 { background: var(--ink); color: var(--paper); }
.chip.e2 { background: var(--wash); }
.chip.e0 { border-color: var(--rule-soft); color: var(--ink-3); }
.chip.na { border-style: dashed; color: var(--ink-3); border-color: var(--ink-3); }
.hum { display: block; font-size: 12px; color: var(--ink-3); margin-top: 3px; }
.ubar { height: 8px; background: var(--wash); position: relative; margin-top: 6px; }
.ubar i { position: absolute; left: 0; top: 0; bottom: 0; background: var(--hue); }
.uval { font-variant-numeric: tabular-nums; font-size: 13px; }
.uval.muted { color: var(--ink-3); }
.split { display: flex; height: 8px; margin-top: 6px; background: var(--wash); }
.split .a { background: var(--ink); }
.split .g { background: #a9a9a9; }
.splitv { font-size: 12px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.more { margin: 14px 0 0; font: inherit; font-size: 14px; padding: 7px 12px; border: 1px solid var(--ink); background: var(--paper); cursor: pointer; }
.loading { color: var(--ink-3); }
.mlab { display: none; color: var(--ink-2); font-size: 12px; }

/* ---------- notes & sources ---------- */
.after { border-top: 1px solid var(--ink); padding: 24px 28px 56px; display: grid; grid-template-columns: var(--side) minmax(0, 1fr); gap: 28px; }
.after h2 { font-size: 18px; margin: 0 0 10px; }
.after-body { max-width: 78ch; }
.after-body h3 { font-size: 15px; margin: 22px 0 6px; }
.after-body p, .after-body li { color: var(--ink-2); font-size: 14px; }
.after-body ol { padding-left: 20px; }
.after-body li { margin-bottom: 8px; }

@media (max-width: 980px) {
  .task-head { display: none; }
  .task { grid-template-columns: 1fr 1fr; }
  .task .txt { grid-column: 1 / -1; }
  .task .use { grid-column: 1 / -1; }
  .bins { grid-template-columns: 1fr; }
  .mlab { display: inline; }
}

@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
  .side { border-right: 0; border-bottom: 1px solid var(--rule-soft); }
  .side-inner { position: static; max-height: none; padding: 20px 16px 20px; }
  .main { padding: 16px 16px 32px; }
  #scatter { height: 440px; min-height: 0; }
  .after { grid-template-columns: 1fr; padding: 20px 16px 48px; }
}