:root {
  --m02-bg: #ffffff;
  --m02-surface: #ffffff;
  --m02-surface-soft: #eef3f8;
  --m02-border: #d7e0ea;
  --m02-text: #0f172a;
  --m02-text-secondary: #475569;
  --m02-muted: #64748b;
  --m02-accent: #2563eb;
  --m02-accent-strong: #5c4ff1;
  --m02-accent-soft: rgba(37, 99, 235, 0.12);
  --m02-accent-border: rgba(37, 99, 235, 0.3);
  --m02-focus-ring: rgba(91, 89, 240, 0.28);
  --m02-gold: #5b0080;
  --m02-gold-soft: rgba(191, 30, 161, 0.22);
  --m02-red: #b85c4c;
  --m02-blue: #4975a9;
  --m02-green: #2563eb;
  --m02-radius: 8px;
  --m02-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

body.quarto-dark,
body.dark {
  --m02-bg: #151411;
  --m02-surface: #1f1d18;
  --m02-surface-soft: #29261f;
  --m02-border: rgba(255, 253, 248, 0.14);
  --m02-text: #fffdf8;
  --m02-text-secondary: #d7d0c2;
  --m02-muted: #aaa08d;
  --m02-shadow: 0 18px 60px rgba(0, 0, 0, 0.25);
}

body:has(.m02-module-intro) {
  background: var(--m02-bg);
  color: var(--m02-text);
}

.m02-module-intro {
  max-width: 1180px;
  margin: 0 auto;
  padding: 3.5rem 1.25rem 4rem;
}

.m01-kw {
  font-weight: 700;
  color: var(--m02-accent);
  border-bottom: 1px dotted var(--m02-accent);
}

.m01-module-kicker {
  font-size: 0.78rem;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--m01-accent-primary);
  font-weight: 700;
  margin: 0 0 0.65rem;
}


.m02-lesson-header {
  border-bottom: 1px solid var(--m02-border);
  margin-bottom: 1.25rem;
  padding-bottom: 1.5rem;
}

.m02-lesson-kicker {
  color: var(--m02-accent-strong);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  margin-bottom: 0.65rem;
  text-transform: uppercase;
}

.m02-lesson-header h1 {
  color: var(--m02-text);
  font-size: clamp(2.1rem, 3.4vw, 3.4rem);
  line-height: 1.05;
  margin: 0;
}

.m02-lesson-header p {
  color: var(--m02-text-secondary);
  font-size: 1rem;
  line-height: 1.65;
  margin: 0.8rem 0 0;
  max-width: 920px;
}

.m02-lesson-nav {
  align-items: center;
  border-bottom: 1px solid var(--m02-border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 2.2rem;
  padding-bottom: 1rem;
}

.m02-lesson-nav a {
  color: var(--m02-accent-strong);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.m02-lesson-section {
  margin: 2.7rem 0;
}

.m02-lesson-section > h2 {
  color: var(--m02-text);
  font-size: 1.65rem;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.m02-social-question-title {
  color: var(--m02-text);
  font-size: clamp(1.45rem, 2.4vw, 2.2rem);
  line-height: 1.15;
  margin-inline: auto;
  max-width: 850px;
  text-align: center;
}

.m02-social-question-intro {
  color: var(--m02-text-secondary);
  font-size: 1rem;
  hyphens: auto;
  line-height: 1.7;
  margin: 1rem auto 0;
  max-width: 850px;
  text-align: justify;
  text-justify: inter-word;
}

.m02-sequence-flow {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.m02-flow-step {
  background: var(--m02-surface);
  border: 1px solid var(--m02-border);
  border-radius: var(--m02-radius);
  padding: 1.1rem;
}

.m02-flow-step h3 {
  color: var(--m02-text);
  font-size: 1rem;
  margin: 0 0 0.6rem;
}

.m02-flow-step p {
  color: var(--m02-text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0;
}

.m02-lab-breakout {
  box-sizing: border-box;
  margin-left: 50%;
  max-width: 100vw;
  transform: translateX(-50%);
  width: min(1380px, calc(100vw - 2.5rem));
}

.m02-lab-surface {
  background: var(--m02-surface-soft);
  border: 1px solid var(--m02-border);
  border-radius: var(--m02-radius);
  box-shadow: var(--m02-shadow);
  padding: 1.35rem;
}

.m02-lab-shell {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
}

.m02-lab-header {
  align-items: start;
  display: flex;
  gap: 1rem;
  grid-column: 1 / -1;
  justify-content: space-between;
}

.m02-lab-header h3 {
  color: var(--m02-text);
  font-size: 1.45rem;
  margin: 0 0 0.35rem;
}

.m02-lab-header p {
  color: var(--m02-text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0;
  max-width: 760px;
}

.m02-lab-sidebar,
.m02-lab-main,
.m02-explainer-section {
  background: var(--m02-surface);
  border: 1px solid var(--m02-border);
  border-radius: var(--m02-radius);
}

.m02-lab-sidebar {
  align-self: start;
  display: grid;
  gap: 1rem;
  grid-column: 1;
  grid-row: 2;
  padding: 1rem;
}

.m02-control-group {
  border-top: 1px solid var(--m02-border);
  padding-top: 0.9rem;
}

.m02-control-group:first-child {
  border-top: 0;
  padding-top: 0;
}

.m02-control-title {
  color: var(--m02-text);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  margin-bottom: 0.45rem;
  text-transform: uppercase;
}

.m02-button-row,
.m02-segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.m02-btn,
.m02-chip {
  align-items: center;
  background: var(--m02-surface);
  border: 1px solid var(--m02-border);
  border-radius: 999px;
  color: var(--m02-text);
  cursor: pointer;
  display: inline-flex;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
  min-height: 34px;
  padding: 0.35rem 0.7rem;
}

.m02-btn:hover,
.m02-chip:hover {
  background: var(--m02-accent-soft);
  border-color: var(--m02-accent-border);
}

.m02-btn:focus-visible,
.m02-chip:focus-visible {
  border-color: var(--m02-accent-border);
  outline: 3px solid var(--m02-focus-ring);
  outline-offset: 2px;
}

.m02-btn[aria-pressed="true"],
.m02-chip[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--m02-accent), var(--m02-accent-strong));
  border-color: transparent;
  color: #ffffff;
}

.m02-btn.m02-danger {
  border-color: rgba(184, 92, 76, 0.45);
  color: var(--m02-red);
}

.m02-check {
  align-items: center;
  color: var(--m02-text-secondary);
  display: flex;
  font-size: 0.9rem;
  gap: 0.45rem;
  margin-top: 0.45rem;
}

.m02-check input {
  accent-color: var(--m02-accent);
}

.m02-lab-main {
  display: grid;
  gap: 0.9rem;
  grid-column: 2;
  grid-row: 2;
  grid-template-rows: auto auto 1fr auto;
  min-width: 0;
  padding: 1rem;
}

.m02-stats-banner {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.m02-stat {
  background: var(--m02-surface-soft);
  border: 1px solid var(--m02-border);
  border-radius: var(--m02-radius);
  min-width: 0;
  padding: 0.6rem;
}

.m02-stat span {
  color: var(--m02-muted);
  display: block;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.m02-stat strong {
  color: var(--m02-text);
  display: block;
  font-size: clamp(0.9rem, 1.6vw, 1.15rem);
  margin-top: 0.2rem;
  overflow-wrap: anywhere;
}

.m02-panel-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: minmax(240px, 0.38fr) minmax(0, 0.62fr);
  min-height: 540px;
}

.m02-generator-panel,
.m02-chart-panel {
  background: var(--m02-bg);
  border: 1px solid var(--m02-border);
  border-radius: var(--m02-radius);
  min-width: 0;
  padding: 0.85rem;
}

.m02-generator-panel h4,
.m02-chart-panel h4 {
  color: var(--m02-text);
  font-size: 0.95rem;
  margin: 0 0 0.65rem;
}

.m02-dice-stage {
  align-items: center;
  display: grid;
  gap: 0.8rem;
  justify-items: center;
  min-height: 210px;
}

.m02-dice-row {
  display: flex;
  gap: 0.8rem;
}

.m02-die {
  background: #fffdf8;
  border: 2px solid var(--m02-text);
  border-radius: 12px;
  box-shadow: 0 8px 18px rgba(38, 35, 28, 0.16);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  height: 92px;
  padding: 12px;
  width: 92px;
}

.m02-pip {
  align-self: center;
  background: var(--m02-text);
  border-radius: 50%;
  height: 13px;
  justify-self: center;
  opacity: 0;
  width: 13px;
}

.m02-pip.is-on {
  opacity: 1;
}

.m02-sample-space {
  display: grid;
  gap: 0.42rem;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  width: 100%;
}

.m02-face-token,
.m02-matrix-cell {
  background: var(--m02-surface);
  border: 1px solid var(--m02-border);
  border-radius: 6px;
  color: var(--m02-text);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  min-height: 38px;
}

.m02-face-token.is-favorable,
.m02-matrix-cell.is-selected {
  background: var(--m02-gold-soft);
  border-color: var(--m02-gold);
}

.m02-face-token.is-current,
.m02-matrix-cell.is-current {
  outline: 3px solid var(--m02-focus-ring);
}

.m02-history-strip {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  min-height: 38px;
}

.m02-history-token {
  background: var(--m02-surface-soft);
  border: 1px solid var(--m02-border);
  border-radius: 999px;
  color: var(--m02-text);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.2rem 0.5rem;
}

.m02-matrix {
  display: grid;
  gap: 0.3rem;
  grid-template-columns: repeat(6, minmax(30px, 1fr));
}

.m02-population-plot {
  display: grid;
  gap: 3px;
  grid-template-columns: repeat(24, 1fr);
  margin-bottom: 0.9rem;
}

.m02-person-dot {
  aspect-ratio: 1;
  background: rgba(37, 99, 235, 0.35);
  border: 1px solid rgba(37, 99, 235, 0.55);
  border-radius: 50%;
}

.m02-person-dot.is-selected {
  background: var(--m02-gold);
  border-color: #7a5b18;
}

.m02-chart-svg {
  display: block;
  height: 350px;
  overflow: visible;
  width: 100%;
}

.m02-bar {
  cursor: pointer;
  fill: rgba(37, 99, 235, 0.78);
  stroke: rgba(36, 33, 28, 0.25);
}

.m02-bar-alt {
  fill: rgba(177, 134, 47, 0.78);
}

.m02-bar:hover,
.m02-bar:focus-visible,
.m02-point:hover,
.m02-point:focus-visible {
  outline: none;
  stroke: var(--m02-red);
  stroke-width: 2.5;
}

.m02-point {
  cursor: pointer;
  fill: var(--m02-accent);
  stroke: #fffdf8;
  stroke-width: 1.4;
}

.m02-point.is-selected {
  fill: var(--m02-gold);
  stroke: var(--m02-text);
  stroke-width: 2;
}

.m02-axis,
.m02-grid-line {
  stroke: var(--m02-border);
}

.m02-theory-line {
  stroke: var(--m02-gold);
  stroke-dasharray: 6 5;
  stroke-width: 2;
}

.m02-label,
.m02-axis-label {
  fill: var(--m02-text-secondary);
  font-size: 12px;
}

.m02-interpretation {
  background: var(--m02-surface-soft);
  border: 1px solid var(--m02-border);
  border-radius: var(--m02-radius);
  color: var(--m02-text-secondary);
  line-height: 1.55;
  padding: 0.8rem;
}

.m02-tour-panel {
  align-items: center;
  border-top: 1px solid var(--m02-border);
  display: flex;
  gap: 0.75rem;
  justify-content: space-between;
  padding-top: 0.8rem;
}

.m02-tour-panel p {
  color: var(--m02-text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
  margin: 0;
}

.m02-explainer-section {
  display: grid;
  gap: 1rem;
  grid-template-columns: 260px minmax(0, 1fr);
  padding: 1rem;
}

.m02-explainer-steps {
  display: grid;
  gap: 0.45rem;
}

.m02-explainer-step {
  align-items: center;
  background: transparent;
  border: 1px solid var(--m02-border);
  border-radius: 6px;
  color: var(--m02-text);
  cursor: pointer;
  display: flex;
  font: inherit;
  min-height: 56px;
  padding: 0.65rem;
  text-align: left;
}

.m02-explainer-step[aria-pressed="true"] {
  background: linear-gradient(135deg, var(--m02-accent), var(--m02-accent-strong));
  color: #ffffff;
}

.m02-explainer-stage {
  background: var(--m02-bg);
  border: 1px solid var(--m02-border);
  border-radius: var(--m02-radius);
  min-height: 280px;
  padding: 0.9rem;
}

.m02-formula-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.m02-formula-card {
  background: var(--m02-surface);
  border: 1px solid var(--m02-border);
  border-radius: var(--m02-radius);
  padding: 1rem;
}

.m02-formula-card h3 {
  color: var(--m02-text);
  font-size: 1rem;
  margin: 0 0 0.75rem;
}

.m02-formula-card p,
.m02-lesson-section p {
  color: var(--m02-text-secondary);
  line-height: 1.65;
}

.m02-lesson-footer-nav {
  align-items: center;
  border-top: 1px solid var(--m02-border);
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1rem;
}

.m02-lesson-footer-nav a {
  color: var(--m02-accent-strong);
  font-weight: 800;
  text-decoration: none;
}

@media (max-width: 900px) {
  .m02-lab-shell,
  .m02-panel-grid,
  .m02-explainer-section {
    grid-template-columns: 1fr;
  }

  .m02-lab-sidebar,
  .m02-lab-main {
    grid-column: auto;
    grid-row: auto;
  }

  .m02-stats-banner,
  .m02-formula-grid,
  .m02-sequence-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .m02-chart-svg {
    height: 320px;
  }
}

@media (max-width: 640px) {
  .m02-module-intro {
    padding: 2rem 1rem 3rem;
  }

  .m02-lab-surface {
    padding: 0.75rem;
  }

  .m02-lab-breakout {
    width: calc(100vw - 1rem);
  }

  .m02-lab-header,
  .m02-tour-panel,
  .m02-lesson-footer-nav {
    align-items: stretch;
    flex-direction: column;
  }

  .m02-stats-banner,
  .m02-formula-grid,
  .m02-sequence-flow {
    grid-template-columns: 1fr;
  }

  .m02-panel-grid {
    min-height: 0;
  }

  .m02-sample-space,
  .m02-matrix {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .m02-chart-svg {
    height: 300px;
  }

  .m02-population-plot {
    grid-template-columns: repeat(16, 1fr);
  }
}