:root {
  --mb-accent: #6366f1;
  --mb-accent-soft: rgba(99, 102, 241, 0.12);
  --mb-card-bg: var(--md-default-bg-color);
  --mb-card-border: var(--md-default-fg-color--lightest);
  --mb-radius: 12px;
  --md-typeset-font-size: 0.7rem;
  --md-typeset-line-height: 1.55;
}

.md-typeset h1 { font-size: 1.55em; }
.md-typeset h2 { font-size: 1.35em; }
.md-typeset h3 { font-size: 1.15em; }
.md-typeset h4 { font-size: 1.05em; }

/* inherit Material typography; only layout + color tweaks */
.md-typeset .hero {
  margin: 0 0 1.5rem;
  padding: 1.35rem 1.25rem;
  border-radius: var(--mb-radius);
  background: var(--mb-accent-soft);
  border: 1px solid var(--mb-card-border);
}

.md-typeset .hero h1 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.md-typeset .hero p {
  margin-bottom: 0.4rem;
  opacity: 0.88;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.65rem;
  margin: 1.25rem 0 1.75rem;
}

.stat-card {
  padding: 0.85rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--mb-card-border);
  background: var(--mb-card-bg);
}

.stat-card .label {
  font-size: 0.75rem;
  opacity: 0.65;
  margin-bottom: 0.15rem;
}

.stat-card .value {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--mb-accent);
}

.stat-card .sub {
  font-size: 0.8rem;
  opacity: 0.6;
  margin-top: 0.15rem;
}

.section-block {
  margin: 2.5rem 0 0.5rem;
  scroll-margin-top: 4rem;
}

.section-block > h2 {
  margin-bottom: 0.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--mb-card-border);
}

.section-block > p,
.section-block > .lead {
  margin-bottom: 0.75rem;
  opacity: 0.88;
}

.pipeline-step {
  margin: 0.5rem 0 1rem;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--mb-accent);
  background: var(--mb-accent-soft);
  border-radius: 0 8px 8px 0;
  font-size: 0.92rem;
}

.pipeline-step code {
  font-size: 0.85em;
}

.layout-compare {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.layout-box {
  padding: 1rem;
  border-radius: var(--mb-radius);
  border: 1px solid var(--mb-card-border);
  font-size: 0.9rem;
}

.layout-box h4 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.layout-box pre {
  margin: 0 0 0.75rem;
  padding: 0.65rem 0.75rem;
  border-radius: 6px;
  background: var(--md-code-bg-color);
  font-size: 0.82rem;
  overflow-x: auto;
}

.layout-box pre code {
  background: transparent;
  padding: 0;
  font-size: inherit;
}

.layout-box ol {
  margin: 0;
  padding-left: 1.25rem;
}

.layout-box li {
  margin-bottom: 0.35rem;
  line-height: 1.45;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 0.85rem;
  margin: 0.75rem 0 1.25rem;
}

.chart-grid.wide {
  grid-template-columns: 1fr;
}

.chart-card {
  padding: 0.85rem 1rem 0.5rem;
  border-radius: var(--mb-radius);
  border: 1px solid var(--mb-card-border);
  background: var(--mb-card-bg);
}

.chart-card h3 {
  margin: 0 0 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  opacity: 0.92;
}

.chart-takeaway {
  margin: 0 0 0.6rem;
  font-size: 0.82rem;
  line-height: 1.45;
  opacity: 0.72;
}

.section-links {
  margin: 0.5rem 0 1.5rem;
  font-size: 0.9rem;
  opacity: 0.85;
}

.bar-legend {
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  line-height: 1.5;
  opacity: 0.8;
}

.bar-legend li {
  margin-bottom: 0.3rem;
}

.bar-legend .swatch {
  display: inline-block;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 2px;
  margin-right: 0.4rem;
  vertical-align: middle;
}

.chart-note {
  margin: 0.5rem 0 1rem;
  font-size: 0.85rem;
  opacity: 0.72;
  font-style: italic;
}

.chart-card canvas {
  width: 100% !important;
  max-height: 260px;
}

.chart-card.tall canvas {
  max-height: 300px;
}

#env-pills .env-pill {
  display: inline-block;
  font-size: 0.78rem;
  padding: 0.15rem 0.55rem;
  margin: 0.2rem 0.35rem 0 0;
  border-radius: 5px;
  background: var(--md-default-fg-color--lightest);
  opacity: 0.9;
}

@media screen and (max-width: 768px) {
  .chart-grid { grid-template-columns: 1fr; }
}