:root {
  --line: #dfe4e1;
  --ink: #171a18;
  --muted: #5c6560;
  --green: #176b52;
  --soft: #eef3f0;
}
/* ---- interactive DTap scatter (Figure 3) ---- */
.dtap-chart-wrap {
  margin: 38px 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px 18px 14px;
  background: #fff;
  box-shadow: 0 4px 24px rgba(23, 26, 24, 0.04);
}
.dtap-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
  font-size: 0.88rem;
}
.dtap-controls span {
  color: var(--muted);
  margin-right: 4px;
}
.dtap-ctrl {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  padding: 5px 14px;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  transition:
    background-color 160ms ease,
    border-color 160ms ease,
    color 160ms ease;
}
.dtap-ctrl:hover {
  border-color: #a5aca8;
}
.dtap-ctrl.active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.dtap-ctrl:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
.dtap-canvas-box {
  position: relative;
  height: 480px;
  width: 100%;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #eef1ef;
}
.dtap-y-caption {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 6px 0 10px;
}
.dtap-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 10px;
  font-size: 0.82rem;
}
.dtap-legend-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 40px;
  margin-top: 12px;
}
.dtap-legend-block {
  margin-top: 0;
}
.dtap-legend-title {
  font-size: 0.78rem;
  color: var(--ink);
  font-weight: 700;
  margin: 0 0 6px;
}
.dtap-legend-title span {
  color: var(--muted);
  font-weight: 400;
  margin-left: 6px;
}
.dtap-leg-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.dtap-leg-item.dtap-leg-sed {
  font-weight: 700;
}
.dtap-leg-badge {
  width: 22px;
  height: 22px;
  object-fit: contain;
}
.dtap-leg-nodef {
  display: inline-flex;
  width: 20px;
  height: 20px;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 50%;
}
.dtap-leg-pareto {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid #0d9488;
  box-sizing: border-box;
}
.dtap-leg-frontier {
  display: inline-block;
  width: 22px;
  height: 0;
  border-top: 2px dashed #0d9488;
  vertical-align: middle;
}
.dtap-leg-hint {
  color: var(--muted);
}
.dtap-callout {
  margin-top: 10px;
  font-size: 0.85rem;
  color: #3f4743;
  padding: 8px 12px;
  background: #edf7f2;
  border-left: 3px solid var(--green);
  border-radius: 0 4px 4px 0;
}
.dtap-chart-wrap figcaption {
  margin-top: 14px;
}
.dtap-canvas-box {
  height: 400px;
}
.dtap-chart-wrap {
  padding: 12px 10px 10px;
}
.dtap-legend-row {
  gap: 8px 20px;
}
.dtap-chart-wrap {
  animation: none;
}