.intro-page header {
  align-items: flex-start;
}

.intro-page .header-title {
  align-items: flex-start;
}

.intro-title-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.intro-kicker {
  font-size: 11px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  color: var(--muted);
}

.intro-sub {
  margin-top: 4px;
}

.intro-card .bd {
  gap: 10px;
}

.intro-directions-layout {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.intro-directions-video {
  flex: 0 0 340px;
  max-width: 340px;
}

.intro-video-shell {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: rgba(15, 23, 42, 0.4);
  box-shadow: 0 12px 22px rgba(0, 0, 0, 0.25);
}

.intro-video-shell iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

@media (max-width: 900px) {
  .intro-directions-layout {
    flex-direction: column;
  }

  .intro-directions-video {
    max-width: none;
    width: 100%;
  }
}

.intro-page .frame .bd {
  max-height: none;
  overflow: visible;
}

.intro-page input[type="range"] {
  touch-action: pan-x;
}

.intro-map {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.intro-map-btn {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  padding: 10px 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
  color: var(--text);
  transition: transform 0.12s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.intro-map-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.25);
  transform: translateY(-1px);
}

.intro-map-btn.is-complete {
  border-color: rgba(122, 255, 199, 0.7);
  box-shadow: 0 0 0 2px rgba(122, 255, 199, 0.25);
}

.intro-map-title {
  font-size: 13px;
  font-weight: 650;
}

.intro-map-progress {
  font-size: 11px;
  color: var(--muted);
}

.intro-directions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.intro-sections {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.topic-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.topic-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
}

.topic-card.is-locked {
  opacity: 0.6;
}

.topic-toggle {
  width: 100%;
  background: transparent;
  border: 0;
  color: var(--text);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  text-align: left;
}

.topic-toggle:disabled {
  cursor: not-allowed;
}

.topic-toggle:focus-visible {
  outline: 2px solid rgba(122, 162, 255, 0.6);
  outline-offset: 2px;
}

.topic-title {
  font-size: 14px;
  font-weight: 650;
}

.topic-meta {
  font-size: 11px;
  color: var(--muted);
  margin-top: 4px;
}

.topic-status {
  font-size: 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 8px;
  text-transform: uppercase;
  letter-spacing: 0.2px;
  font-weight: 600;
}

.topic-status.is-locked {
  color: var(--muted);
}

.topic-status.is-ready {
  color: var(--accent);
  border-color: rgba(122, 162, 255, 0.4);
  background: rgba(122, 162, 255, 0.12);
}

.topic-status.is-complete {
  color: var(--ok);
  border-color: rgba(122, 255, 199, 0.35);
  background: rgba(122, 255, 199, 0.12);
}

.topic-body {
  padding: 0 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.topic-body[hidden] {
  display: none;
}

.topic-intro {
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
}

.topic-explain {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.topic-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.topic-info-block {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.12);
}

.topic-info-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  font-weight: 700;
}

.topic-info-text {
  font-size: 12px;
  color: var(--text);
  line-height: 1.5;
  margin-top: 4px;
}

.topic-info-more {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.topic-info-more[hidden] {
  display: none;
}

.learn-more-btn {
  margin-top: 6px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-size: 12px;
  cursor: pointer;
}

.learn-more-btn:hover {
  text-decoration: underline;
}

.topic-try {
  font-size: 12px;
  color: var(--text);
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(122, 162, 255, 0.08);
}

.topic-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) minmax(260px, 1fr);
  gap: 14px;
  align-items: start;
}

.topic-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.topic-widget {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 200px;
  max-width: 100%;
  overflow-x: hidden;
}

.topic-widget-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.topic-widget-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-transform: uppercase;
  color: var(--muted);
}

.topic-widget-controls {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.topic-widget-controls .btn {
  padding: 6px 10px;
  font-size: 11px;
  opacity: 0.75;
}

.topic-widget-body {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 12px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.12);
  flex: 1 1 auto;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  box-sizing: border-box;
}

.topic-widget-body *,
.topic-widget-body *::before,
.topic-widget-body *::after {
  box-sizing: border-box;
}

.topic-widget-body canvas,
.topic-widget-body svg,
.topic-widget-body img,
.topic-widget-body table {
  max-width: 100%;
}

.topic-widget-legend {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-widget-note {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(122, 162, 255, 0.35);
  background: rgba(15, 23, 42, 0.35);
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.topic-widget-legend.is-hidden {
  display: none;
}

.topic-widget-legend-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--muted);
  font-weight: 700;
}

.topic-widget-legend-items {
  display: grid;
  gap: 6px;
}

.topic-widget-legend[data-topic-id="t11"] .topic-widget-legend-items {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.topic-widget-legend-empty {
  font-size: 11px;
  color: var(--muted);
}

.widget-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text);
}

.widget-legend-swatch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.widget-legend-swatch.is-empty {
  background: rgba(255, 255, 255, 0.08);
}

.widget-legend-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.topic-widget-controls .btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.widget-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 11px;
  color: var(--muted);
}

.widget-control {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 140px;
}

.widget-control.is-disabled {
  opacity: 0.5;
}

.widget-label {
  font-size: 11px;
  color: var(--muted);
}

.widget-select {
  font-size: 12px;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.16);
  color: var(--text);
}

.widget-controls input[type="range"] {
  accent-color: var(--accent);
  touch-action: pan-x;
  pointer-events: auto;
  width: 100%;
}

.demo-widget {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.demo-widget-canvas {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--plot-bg);
}

.demo-widget-controls {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 11px;
  color: var(--muted);
}

.demo-widget-label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.demo-widget-label input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  touch-action: pan-x;
  pointer-events: auto;
}

.demo-widget-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 11px;
  color: var(--text);
}

.demo-widget-stat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.demo-widget-swatch {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

.demo-widget-swatch.is-true {
  background: rgba(255, 179, 71, 0.9);
}

.demo-widget-swatch.is-sample {
  background: rgba(122, 255, 199, 0.9);
}

.demo-widget-swatch.is-primary {
  background: rgba(122, 162, 255, 0.85);
}

.demo-widget-swatch.is-secondary {
  background: rgba(122, 255, 199, 0.85);
}

.demo-widget-swatch.is-error {
  background: rgba(255, 122, 122, 0.8);
}

.demo-widget-stat-label {
  color: var(--muted);
}

.demo-widget-stat-value {
  font-weight: 650;
}

.types-widget {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.types-card-column,
.types-bin-column {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.types-title {
  font-size: 12px;
  font-weight: 650;
  color: var(--muted);
  margin-bottom: 6px;
}

.types-card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.types-card {
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  font-size: 12px;
  cursor: grab;
}

.types-card.is-correct {
  border-color: rgba(122, 255, 199, 0.5);
  background: rgba(122, 255, 199, 0.12);
}

.types-card.is-wrong {
  border-color: rgba(255, 122, 122, 0.5);
  background: rgba(255, 122, 122, 0.1);
}

.types-bin-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
}

.types-bin {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 8px;
  background: rgba(0, 0, 0, 0.12);
  min-height: 120px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.types-bin.is-over {
  border-color: rgba(122, 162, 255, 0.6);
  background: rgba(122, 162, 255, 0.08);
}

.types-bin-title {
  font-size: 11px;
  color: var(--muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.types-bin-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.types-bin-tag {
  font-size: 11px;
  padding: 4px 6px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
}

.types-bin-tag.is-correct {
  border-color: rgba(122, 255, 199, 0.5);
  color: var(--ok);
}

.types-bin-tag.is-wrong {
  border-color: rgba(255, 122, 122, 0.5);
  color: var(--bad);
}

.viz-widget,
.central-widget,
.variability-widget,
.dist-widget,
.prob-widget,
.cond-widget,
.sampling-widget,
.samplingdist-widget,
.sampleerror-widget,
.ci-widget,
.hypothesis-widget,
.pvalue-widget,
.power-widget,
.effect-widget,
.corr-widget,
.regression-widget,
.causation-widget,
.ttest-widget,
.anova-widget,
.chisq-widget,
.assumption-widget,
.nonparam-widget,
.multiples-widget {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.viz-chart {
  position: relative;
}

.viz-canvas,
.central-canvas,
.variability-canvas,
.dist-canvas,
.prob-canvas,
.cond-canvas,
.sampling-canvas,
.samplingdist-canvas,
.sampleerror-canvas,
.ci-canvas,
.hypothesis-canvas,
.pvalue-canvas,
.power-canvas,
.effect-canvas,
.corr-canvas,
.regression-canvas,
.residual-canvas,
.causation-canvas,
.ttest-canvas,
.anova-canvas,
.chisq-canvas,
.nonparam-canvas,
.multiples-canvas {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--plot-bg);
}

.cond-matrix {
  width: 100%;
}

.cond-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  color: var(--text);
}

.cond-table th,
.cond-table td {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: center;
}

.cond-table thead th {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--muted);
}

.cond-table tbody th {
  text-align: left;
  color: var(--muted);
  font-weight: 600;
}

.cond-table .cond-total-row th,
.cond-table .cond-total-row td {
  font-weight: 600;
  color: var(--muted);
}

.cond-table .cond-highlight {
  border-color: rgba(122, 162, 255, 0.5);
  background: rgba(122, 162, 255, 0.12);
  color: var(--text);
}

.cond-table .cond-numerator {
  border-color: rgba(122, 255, 199, 0.6);
  background: rgba(122, 255, 199, 0.14);
  color: var(--ok);
  font-weight: 650;
}

.cond-meter {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cond-meter-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
}

.cond-meter-bar {
  height: 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.cond-meter-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(122, 255, 199, 0.85), rgba(122, 162, 255, 0.85));
  transition: width 0.2s ease;
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.compare-panel {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
  background: rgba(0, 0, 0, 0.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.compare-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--muted);
  font-weight: 700;
}

.compare-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 11px;
  color: var(--text);
}

.compare-metric {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.compare-swatch {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  border: 1px solid rgba(15, 23, 42, 0.35);
  flex: 0 0 auto;
}

.compare-label {
  color: var(--muted);
}

.compare-value {
  font-weight: 650;
}

.residual-canvas {
  height: 120px;
}

.causation-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  align-items: start;
}

.causal-chart {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chisq-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  align-items: start;
}

.chisq-table-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chisq-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  color: var(--text);
}

.chisq-table th,
.chisq-table td {
  border: 1px solid var(--border);
  padding: 6px;
  text-align: center;
}

.chisq-table th {
  color: var(--muted);
  font-weight: 600;
}

.chisq-cell {
  width: 100%;
  border: 0;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  padding: 6px;
  border-radius: 8px;
  font-size: 11px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.chisq-cell.is-selected {
  outline: 2px solid rgba(122, 162, 255, 0.6);
}

.chisq-cell:focus-visible {
  outline: 2px solid rgba(122, 162, 255, 0.6);
  outline-offset: 2px;
}

.chisq-exp {
  color: var(--muted);
  font-size: 10px;
}

.chisq-detail {
  font-size: 11px;
  color: var(--muted);
}

.assumption-meter {
  height: 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.assumption-meter-fill {
  height: 100%;
  width: 0%;
  background: rgba(255, 122, 122, 0.7);
  transition: width 0.2s ease;
}

.assumption-warnings {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.assumption-alert {
  font-size: 11px;
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.causal-diagram {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.12);
}

.causal-svg {
  width: 100%;
  height: 120px;
}

.causal-node {
  fill: rgba(15, 23, 42, 0.6);
  stroke: var(--border);
}

.causal-label {
  font-size: 10px;
  fill: var(--text);
}

.causal-link {
  stroke: rgba(122, 162, 255, 0.75);
  stroke-width: 2;
  marker-end: url(#arrowhead);
}

.causal-diagram.is-randomized .confounder-treatment {
  opacity: 0.2;
  stroke-dasharray: 4 4;
}

.causal-diagram.is-no-confounder .confounder-node,
.causal-diagram.is-no-confounder .confounder-link {
  opacity: 0.25;
}

.viz-tooltip {
  position: absolute;
  padding: 6px 8px;
  border-radius: 8px;
  font-size: 11px;
  background: rgba(15, 23, 42, 0.95);
  color: #f8fafc;
  border: 1px solid rgba(122, 162, 255, 0.3);
  pointer-events: none;
}

.viz-tooltip.hidden {
  display: none;
}

.variability-stats,
.dist-labels,
.prob-stats,
.sampling-stats,
.sampleerror-stats,
.cond-stats,
.ci-stats,
.hypothesis-stats,
.pvalue-stats,
.power-stats,
.effect-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 11px;
  color: var(--text);
}

.variability-stat,
.dist-label,
.cond-stat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.cond-interpretation {
  font-size: 12px;
  color: var(--text);
  line-height: 1.5;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.12);
}

.hypothesis-interpretation {
  font-size: 12px;
  color: var(--text);
  line-height: 1.5;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.12);
}

.variability-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  font-size: 11px;
  color: var(--text);
}

.variability-table {
  display: grid;
  gap: 6px;
  font-size: 11px;
  color: var(--text);
}

.variability-table-row {
  display: grid;
  grid-template-columns: 72px 1fr repeat(2, minmax(90px, 1fr));
  gap: 8px;
  align-items: center;
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.variability-table-head {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.2px;
  color: var(--muted);
}

.variability-cell {
  display: flex;
  align-items: center;
  gap: 6px;
}

.variability-symbol {
  width: 38px;
  height: 14px;
  display: inline-block;
  position: relative;
  border-radius: 0;
  background: transparent;
  border: 0;
}

.variability-symbol.range::after {
  content: "";
  position: absolute;
  left: 4px;
  right: 4px;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
  background: rgba(122, 162, 255, 0.9);
}

.variability-symbol.iqr::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  top: 1px;
  bottom: 1px;
  border-radius: 0;
  background: rgba(122, 162, 255, 0.3);
}

.variability-symbol.mean::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 1px;
  bottom: 1px;
  width: 2px;
  transform: translateX(-50%);
  background: rgba(255, 179, 71, 0.9);
}

.variability-symbol.sd::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  top: 50%;
  height: 4px;
  transform: translateY(-50%);
  background: rgba(122, 162, 255, 0.7);
  box-shadow: 0 0 0 2px rgba(122, 162, 255, 0.25);
  border-radius: 999px;
}

.variability-group {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.variability-group-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.2px;
  color: var(--muted);
}

.variability-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.variability-row span:first-child {
  color: var(--muted);
}

.prob-note {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
  margin-top: 4px;
}

.intro-zoom {
  display: none;
  align-items: center;
  gap: 6px;
}

.intro-zoom-btn {
  min-width: 36px;
  padding: 6px 10px;
  font-size: 11px;
}

.intro-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
}

.intro-modal.hidden {
  display: none !important;
}

.intro-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 12, 24, 0.6);
}

.intro-modal-card {
  position: relative;
  z-index: 1;
  width: min(420px, 90vw);
  border-radius: 16px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(8, 12, 24, 0.98));
  padding: 18px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.intro-modal-title {
  font-size: 15px;
  font-weight: 700;
}

.intro-modal-text {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.5;
}

.intro-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.prob-btn-row,
.sampling-action-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.prob-outcomes {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.prob-outcome {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: rgba(148, 163, 184, 0.35);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 600;
  color: #0f172a;
  line-height: 1;
}

.prob-outcome.is-hit {
  background: rgba(122, 255, 199, 0.85);
}

.prob-outcome.is-miss {
  background: rgba(255, 179, 71, 0.8);
}

.prob-outcome.is-die {
  font-variant-numeric: tabular-nums;
}

.widget-value {
  margin-left: 6px;
  font-weight: 600;
  color: var(--text);
}

.samplingdist-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 11px;
  color: var(--muted);
}

.samplingdist-stat {
  padding: 4px 6px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.power-meter {
  height: 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.power-meter-fill {
  height: 100%;
  width: 0%;
  background: rgba(122, 255, 199, 0.7);
  transition: width 0.2s ease;
}

.effect-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.effect-badge {
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 11px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.effect-badge.is-pass {
  border-color: rgba(122, 255, 199, 0.5);
  background: rgba(122, 255, 199, 0.12);
  color: var(--ok);
}

.effect-badge.is-fail {
  border-color: rgba(255, 122, 122, 0.5);
  background: rgba(255, 122, 122, 0.12);
  color: var(--bad);
}

.demo-widget-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--muted);
}

.demo-widget-toggle input {
  accent-color: var(--accent);
}

.widget-control.is-disabled input,
.widget-control.is-disabled select {
  opacity: 0.6;
  cursor: not-allowed;
}

.topic-quiz {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.topic-quiz-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.topic-quiz-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.topic-quiz-meta {
  font-size: 11px;
  color: var(--muted);
}

.topic-quiz-status {
  font-size: 10px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  color: var(--muted);
}

.quiz-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.quiz-question {
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 10px;
  background: rgba(0, 0, 0, 0.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-prompt {
  font-size: 12px;
  font-weight: 650;
  color: var(--text);
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text);
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
}

.quiz-option input {
  accent-color: var(--accent);
}

.quiz-option.is-correct {
  border-color: rgba(122, 255, 199, 0.5);
  background: rgba(122, 255, 199, 0.12);
}

.quiz-option.is-wrong {
  border-color: rgba(255, 122, 122, 0.5);
  background: rgba(255, 122, 122, 0.1);
}

.quiz-feedback {
  font-size: 11px;
  color: var(--muted);
}

.quiz-feedback.is-correct {
  color: var(--ok);
}

.quiz-feedback.is-wrong {
  color: var(--bad);
}

.quiz-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.quiz-result {
  font-size: 12px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.quiz-result.is-pass {
  border-color: rgba(122, 255, 199, 0.5);
  background: rgba(122, 255, 199, 0.12);
  color: var(--ok);
}

.quiz-result.is-fail {
  border-color: rgba(255, 122, 122, 0.5);
  background: rgba(255, 122, 122, 0.1);
  color: var(--bad);
}

.quiz-result.is-warning {
  border-color: rgba(255, 179, 71, 0.6);
  background: rgba(255, 179, 71, 0.12);
  color: #ffb347;
}

.quiz-empty {
  font-size: 12px;
  color: var(--muted);
  padding: 8px 2px;
}

.topic-placeholder {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.12);
}

.topic-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.topic-lock-msg {
  font-size: 12px;
  color: var(--muted);
  padding: 0 14px 12px;
}

.intro-debug {
  border: 1px solid rgba(122, 162, 255, 0.35);
}

.intro-debug-row {
  flex-wrap: wrap;
  gap: 10px;
}

.intro-debug-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.intro-debug-toggle input {
  accent-color: var(--accent);
}

.intro-debug-label {
  font-size: 12px;
  color: var(--muted);
}

.intro-debug-input {
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
  color: var(--text);
  font-size: 12px;
  width: 120px;
}

.intro-debug-note {
  margin-top: 10px;
}

.performance-summary {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.performance-summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.performance-summary-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.performance-summary-meta {
  font-size: 11px;
  color: var(--muted);
}

.performance-summary-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.performance-summary-branding {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.2);
}

.performance-summary-brand {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.performance-summary-report-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.performance-summary-account {
  font-size: 12px;
  color: var(--muted);
}

.performance-summary-note {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.04);
}

.performance-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.performance-summary-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.12);
}

.performance-summary-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.performance-summary-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  margin-top: 4px;
}

.performance-summary-table-wrap {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow-x: auto;
  background: rgba(0, 0, 0, 0.12);
}

.performance-summary-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  color: var(--text);
  min-width: 520px;
}

.performance-summary-table th,
.performance-summary-table td {
  border-bottom: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

.performance-summary-table th {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--muted);
}

@media print {
  body.intro-print-summary header,
  body.intro-print-summary .intro-card,
  body.intro-print-summary .footer,
  body.intro-print-summary .topic-card:not(.is-performance-summary) {
    display: none !important;
  }

  body.intro-print-summary #introSections {
    padding: 0;
  }

  body.intro-print-summary .topic-card.is-performance-summary {
    border: none;
    background: transparent;
    box-shadow: none;
  }

  body.intro-print-summary .topic-card.is-performance-summary .topic-toggle {
    display: none;
  }

  body.intro-print-summary .topic-card.is-performance-summary .topic-body {
    display: block !important;
    padding: 0;
  }

  body.intro-print-summary .performance-summary-actions {
    display: none;
  }

  body.intro-print-summary .performance-summary-table {
    min-width: 0;
  }
}

@media (max-width: 900px) {
  header {
    flex-direction: column;
    align-items: flex-start;
  }
  .header-actions {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
  .topic-grid {
    grid-template-columns: 1fr;
  }
  .intro-zoom {
    display: inline-flex;
  }
}