/* ============================================================
   Celva Bio — Learn article (rich editorial body)
   Layered on top of learn.css. Reuses brand tokens from
   colors_and_type.css. Used by the long-form learn-*.html pages.
   ============================================================ */

.learn-article {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 32px 24px;
}

/* Tag row + lede */
.learn-article__tag {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); margin-top: 32px; margin-bottom: 14px;
}
.learn-article__tag strong { color: var(--accent-blue); font-weight: 600; }

.learn-lede {
  margin-bottom: 56px; padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.learn-lede h2 {
  font-family: var(--font-display); font-weight: 300;
  font-size: 32px; line-height: 1.2; letter-spacing: -0.005em;
  color: var(--ink); margin: 0 0 20px; max-width: 840px;
}
.learn-lede h2 em { font-style: italic; color: var(--accent-blue); font-weight: 300; }
.learn-lede p {
  font-size: 16px; line-height: 1.8; color: var(--ink-muted);
  margin: 0 0 18px; max-width: 780px;
}
.learn-lede p strong { color: var(--ink); font-weight: 500; }

/* Numbered section blocks (sidebar + content) */
.section-block {
  margin-bottom: 64px;
  display: grid; grid-template-columns: 240px 1fr; gap: 48px;
  align-items: start;
}
.section-block-num {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); position: sticky; top: 120px;
}
.section-block-num strong {
  display: block; font-family: var(--font-display); font-weight: 300;
  font-size: 32px; color: var(--accent-blue); letter-spacing: -0.01em;
  margin-top: 4px;
}
.section-block-content h3 {
  font-family: var(--font-display); font-weight: 400; font-size: 28px;
  line-height: 1.2; letter-spacing: -0.005em; color: var(--ink);
  margin: 0 0 18px;
}
.section-block-content h3 em { font-style: italic; color: var(--accent-blue); font-weight: 400; }
.section-block-content h4 {
  font-family: var(--font-display); font-weight: 500; font-size: 20px;
  color: var(--ink); margin: 22px 0 10px; letter-spacing: -0.005em;
}
.section-block-content p {
  font-size: 15px; line-height: 1.75; color: var(--ink-muted);
  margin: 0 0 14px;
}
.section-block-content p strong { color: var(--ink); font-weight: 500; }

/* Source flow diagram (allo vs auto pathways) */
.flow-diagram {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  margin: 32px 0 8px;
}
.flow-pathway {
  background: #fff; border: 1px solid var(--border);
  padding: 24px 26px 28px; border-radius: 2px; position: relative;
}
.flow-pathway--auto { border-top: 3px solid #B89A5A; }
.flow-pathway--allo { border-top: 3px solid var(--accent-blue); }
.flow-pathway__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  font-weight: 600; margin-bottom: 4px;
}
.flow-pathway--auto .flow-pathway__label { color: #7A6324; }
.flow-pathway--allo .flow-pathway__label { color: var(--accent-blue); }
.flow-pathway__title {
  font-family: var(--font-display); font-weight: 400; font-size: 22px;
  color: var(--ink); margin: 0 0 18px; letter-spacing: -0.005em;
}
.flow-pathway__title em { font-style: italic; color: var(--accent-blue); }
.flow-step {
  display: grid; grid-template-columns: 28px 1fr;
  gap: 10px; align-items: start;
  padding: 10px 0; border-top: 1px dotted var(--border);
}
.flow-step:first-of-type { border-top: none; }
.flow-step__num {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 11px; color: var(--ink-muted);
  padding-top: 2px; font-weight: 600;
}
.flow-step__text { font-size: 13px; line-height: 1.55; color: var(--ink-muted); }
.flow-step__text strong { color: var(--ink); font-weight: 500; display: block; margin-bottom: 2px; }

/* Property bars (allogeneic vs autologous metric comparison) */
.prop-bars { margin: 24px 0 8px; }
.prop-bars__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 14px; font-weight: 600;
}
.prop-bar {
  display: grid; grid-template-columns: 180px 1fr;
  gap: 16px; align-items: center;
  padding: 12px 0; border-bottom: 1px dotted var(--border);
}
.prop-bar:last-child { border-bottom: none; }
.prop-bar__name {
  font-size: 13px; color: var(--ink); font-weight: 500;
}
.prop-bar__name em { font-style: italic; color: var(--ink-muted); font-weight: 400; display: block; font-size: 11px; margin-top: 2px; }
.prop-bar__track {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px; height: 28px;
}
.prop-bar__cell {
  display: flex; align-items: center; padding: 0 12px;
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
}
.prop-bar__cell--auto { background: #FDF6E8; color: #7A6324; }
.prop-bar__cell--allo { background: rgba(124, 169, 209, 0.18); color: var(--accent-blue); }
.prop-bar__cell--strong { font-weight: 600; }

/* Quick-reference summary box (top of article) */
.quick-ref {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px;
  margin: 32px 0 8px;
}
.quick-ref__cell {
  background: #fff; border: 1px solid var(--border);
  padding: 18px 20px; border-radius: 2px;
}
.quick-ref__key {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 6px; font-weight: 600;
}
.quick-ref__val {
  font-family: var(--font-display); font-weight: 400; font-size: 22px;
  color: var(--ink); letter-spacing: -0.01em; line-height: 1.15;
  margin: 0 0 6px;
}
.quick-ref__val em { font-style: italic; color: var(--accent-blue); }
.quick-ref__note { font-size: 12px; line-height: 1.5; color: var(--ink-muted); margin: 0; }
@media (max-width: 720px) {
  .quick-ref { grid-template-columns: 1fr; gap: 12px; }
}

/* Immune diagram (MSC immunoprivilege visual) */
.immune-card {
  background: linear-gradient(180deg, #F8FAFC 0%, #fff 100%);
  border: 1px solid var(--border);
  padding: 28px 30px; border-radius: 2px; margin: 28px 0 8px;
}
.immune-card__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 14px; font-weight: 600;
}
.immune-card__title {
  font-family: var(--font-display); font-weight: 400; font-size: 22px;
  color: var(--ink); margin: 0 0 18px; letter-spacing: -0.005em;
}
.immune-card__title em { font-style: italic; color: var(--accent-blue); }
.immune-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.immune-prop {
  padding: 14px 18px; border-radius: 2px;
  background: #fff; border: 1px solid var(--border);
}
.immune-prop__name {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 6px; font-weight: 600;
}
.immune-prop__state {
  font-family: var(--font-display); font-style: italic;
  font-size: 17px; color: var(--accent-blue); margin-bottom: 6px;
}
.immune-prop__state--low { color: #B89A5A; }
.immune-prop__desc { font-size: 12px; line-height: 1.55; color: var(--ink-muted); margin: 0; }

/* Warning / aside card */
.warn-card {
  background: #FDF6E8; border-left: 3px solid #B89A5A;
  padding: 20px 26px; border-radius: 0 2px 2px 0; margin: 24px 0;
}
.warn-label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: #7A6324; font-weight: 600; margin-bottom: 8px;
}
.warn-text { font-size: 14px; line-height: 1.7; color: #5A4A1A; margin: 0; }
.warn-text strong { color: #3A2F10; font-weight: 500; }

/* Compare grid: A vs B */
.compare-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px;
  margin: 24px 0;
}
.compare-card {
  background: #fff; border: 1px solid var(--border);
  padding: 24px 26px; border-radius: 2px;
}
.compare-card--alt { border-top: 3px solid #B89A5A; }
.compare-card--pref { border-top: 3px solid var(--accent-blue); }
.compare-label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); font-weight: 600; margin-bottom: 6px;
}
.compare-card--alt .compare-label { color: #7A6324; }
.compare-card--pref .compare-label { color: var(--accent-blue); }
.compare-card h4 {
  font-family: var(--font-display); font-weight: 500; font-size: 20px;
  color: var(--ink); margin: 0 0 14px; letter-spacing: -0.005em;
}
.compare-card ul { list-style: none; padding: 0; margin: 0; }
.compare-card li {
  padding: 8px 0; border-bottom: 1px dotted var(--border);
  font-size: 13px; line-height: 1.55; color: var(--ink-muted);
}
.compare-card li:last-child { border-bottom: none; }

/* Checklist (consult questions) */
.learn-checklist {
  background: #fff; border: 1px solid var(--border);
  padding: 32px 36px; border-radius: 2px; margin: 32px 0;
}
.learn-checklist h4 {
  font-family: var(--font-display); font-weight: 500; font-size: 22px;
  color: var(--ink); margin: 0 0 16px; letter-spacing: -0.005em;
}
.learn-checklist h4 em { font-style: italic; color: var(--accent-blue); }
.learn-checklist ul { list-style: none; padding: 0; margin: 0; }
.learn-checklist li {
  padding: 11px 0 11px 30px; border-bottom: 1px dotted var(--border);
  position: relative; font-size: 14px; line-height: 1.65; color: var(--ink-muted);
}
.learn-checklist li:last-child { border-bottom: none; }
.learn-checklist li::before {
  content: ''; position: absolute; left: 0; top: 17px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--accent-ice); border: 2px solid var(--accent-blue);
}
.learn-checklist li strong { color: var(--ink); font-weight: 500; }

/* TL;DR */
.tldr {
  background: var(--navy-brand); color: #fff;
  padding: 36px 40px; border-radius: 2px; margin: 48px 0;
}
.tldr-label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-ice); font-weight: 600; margin-bottom: 14px;
}
.tldr h3 {
  font-family: var(--font-display); font-weight: 400; font-size: 24px;
  color: #fff; margin: 0 0 14px; letter-spacing: -0.005em;
}
.tldr h3 em { font-style: italic; color: var(--accent-ice); }
.tldr p {
  font-size: 15px; line-height: 1.7; color: rgba(255,255,255,0.82);
  margin: 0 0 12px;
}
.tldr p:last-child { margin-bottom: 0; }
.tldr p strong { color: #fff; font-weight: 500; }

/* Divergence chart (the six-axes visual) */
.divergence-chart {
  background: #fff; border: 1px solid var(--border);
  padding: 32px; border-radius: 2px; margin: 28px 0 8px;
}
.divergence-chart__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); font-weight: 600; margin-bottom: 20px;
}
.divergence-chart__row {
  display: grid; grid-template-columns: 180px 1fr;
  gap: 28px; align-items: center;
  padding: 14px 0; border-bottom: 1px dotted var(--border);
}
.divergence-chart__row:last-child { border-bottom: none; }
.divergence-chart__axis {
  font-family: var(--font-display); font-size: 17px; font-weight: 500;
  color: var(--ink); letter-spacing: -0.005em;
}
.divergence-chart__axis em { font-style: italic; color: var(--accent-blue); font-weight: 400; }
.divergence-chart__bar {
  position: relative; height: 26px;
  background: linear-gradient(to right, var(--accent-wash) 0%, var(--accent-ice) 100%);
  border-radius: 2px; overflow: hidden;
}
.divergence-chart__marker--lo, .divergence-chart__marker--hi {
  position: absolute; top: 50%; transform: translateY(-50%);
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.06em; color: var(--ink);
  background: #fff; padding: 2px 8px; border-radius: 2px;
  border: 1px solid var(--border); white-space: nowrap;
}
.divergence-chart__marker--lo { left: 8px; }
.divergence-chart__marker--hi { right: 8px; background: var(--accent-blue); color: #fff; border-color: var(--accent-blue); }

/* Related grid + CTA already covered by learn.css patterns */
.learn-related {
  max-width: 1080px; margin: 0 auto;
  padding: 64px 32px; border-top: 1px solid var(--border);
}
.learn-related__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 14px;
}
.learn-related h2 {
  font-family: var(--font-display); font-weight: 300; font-size: 32px;
  color: var(--ink); margin: 0 0 30px; letter-spacing: -0.005em;
}
.learn-related h2 em { font-style: italic; color: var(--accent-blue); }
.learn-related__grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.learn-related__card {
  background: #fff; border: 1px solid var(--border);
  padding: 24px 26px; border-radius: 2px;
}
.learn-related__card h4 {
  font-family: var(--font-display); font-weight: 500; font-size: 18px;
  color: var(--ink); margin: 0 0 6px;
}
.learn-related__card h4 em { font-style: italic; color: var(--accent-blue); }
.learn-related__card p {
  font-size: 13px; line-height: 1.65; color: var(--ink-muted);
  margin: 0 0 12px;
}
.learn-related__card a {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase;
  font-weight: 500; color: var(--accent-blue);
}

/* ============ cGMP page visuals ============ */

/* Cleanroom classification diagram — nested squares showing grade cascade */
.cleanroom-diagram {
  background: #fff; border: 1px solid var(--border);
  padding: 32px; border-radius: 2px; margin: 28px 0 8px;
}
.cleanroom-diagram__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); font-weight: 600; margin-bottom: 20px;
}
.cleanroom-stack {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center;
}
.cleanroom-rings {
  position: relative; aspect-ratio: 1 / 1; width: 100%; max-width: 360px;
  margin: 0 auto;
}
.cleanroom-ring {
  position: absolute; display: flex; align-items: flex-start;
  justify-content: flex-start; padding: 8px 12px;
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 600;
}
.cleanroom-ring--d { inset: 0; background: #F1F4F8; color: #6B7280; border: 1px solid var(--border); }
.cleanroom-ring--c { inset: 12%; background: #DCE5EF; color: #4A5B70; }
.cleanroom-ring--b { inset: 26%; background: #B7CADB; color: #2B3F58; }
.cleanroom-ring--a { inset: 40%; background: var(--accent-blue); color: #fff;
  align-items: center; justify-content: center; text-align: center; padding: 4px; }
.cleanroom-ring--a strong { display: block; font-family: var(--font-display);
  font-style: italic; font-size: 14px; letter-spacing: -0.005em;
  text-transform: none; margin-top: 2px; font-weight: 400; }
.cleanroom-legend { list-style: none; padding: 0; margin: 0; }
.cleanroom-legend li {
  display: grid; grid-template-columns: 18px 80px 1fr; gap: 12px;
  align-items: start; padding: 10px 0; border-bottom: 1px dotted var(--border);
  font-size: 12px; line-height: 1.55; color: var(--ink-muted);
}
.cleanroom-legend li:last-child { border-bottom: none; }
.cleanroom-legend__chip {
  width: 14px; height: 14px; border-radius: 2px; margin-top: 3px;
}
.cleanroom-legend__chip--a { background: var(--accent-blue); }
.cleanroom-legend__chip--b { background: #B7CADB; }
.cleanroom-legend__chip--c { background: #DCE5EF; }
.cleanroom-legend__chip--d { background: #F1F4F8; border: 1px solid var(--border); }
.cleanroom-legend__name {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 600; color: var(--ink);
}

/* Release panel bar chart — assays with status pills */
.release-panel {
  background: #fff; border: 1px solid var(--border);
  padding: 28px 32px; border-radius: 2px; margin: 24px 0 8px;
}
.release-panel__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); font-weight: 600; margin-bottom: 18px;
}
.release-row {
  display: grid; grid-template-columns: 160px 1fr 140px 90px;
  gap: 16px; align-items: center;
  padding: 12px 0; border-bottom: 1px dotted var(--border);
}
.release-row:last-child { border-bottom: none; }
.release-row__assay {
  font-family: var(--font-display); font-size: 15px; color: var(--ink); font-weight: 500;
}
.release-row__method { font-size: 11px; line-height: 1.5; color: var(--ink-muted); }
.release-row__spec {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink); background: var(--accent-wash); padding: 4px 10px;
  border-radius: 2px; text-align: center;
}
.release-row__pill {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  font-weight: 600; padding: 5px 0; border-radius: 2px; text-align: center;
  background: var(--accent-blue); color: #fff;
}

/* QC → QA release gate flow */
.gate-flow {
  display: grid; grid-template-columns: 1fr 60px 1fr 60px 1fr;
  gap: 0; align-items: stretch; margin: 28px 0 8px;
}
.gate-node {
  background: #fff; border: 1px solid var(--border);
  padding: 20px 22px; border-radius: 2px; min-height: 140px;
  display: flex; flex-direction: column;
}
.gate-node--qc { border-top: 3px solid var(--accent-blue); }
.gate-node--qa { border-top: 3px solid #B89A5A; }
.gate-node--release { border-top: 3px solid #2A8A5B; background: #F0F8F3; }
.gate-node__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 600; margin-bottom: 4px; color: var(--ink-muted);
}
.gate-node--qc .gate-node__label { color: var(--accent-blue); }
.gate-node--qa .gate-node__label { color: #7A6324; }
.gate-node--release .gate-node__label { color: #1F6B45; }
.gate-node__title {
  font-family: var(--font-display); font-size: 17px; color: var(--ink);
  margin-bottom: 8px; font-weight: 500; letter-spacing: -0.005em;
}
.gate-node__list {
  list-style: none; padding: 0; margin: 0;
  font-size: 11px; line-height: 1.55; color: var(--ink-muted);
}
.gate-node__list li { padding: 3px 0; }
.gate-arrow {
  display: flex; align-items: center; justify-content: center;
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 18px; color: var(--accent-blue); font-weight: 500;
}

/* Inspection layers — concentric/stacked badges */
.inspection-stack {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin: 24px 0 8px;
}
.inspection-tier {
  background: #fff; border: 1px solid var(--border);
  padding: 22px 24px; border-radius: 2px; position: relative;
}
.inspection-tier__num {
  font-family: var(--font-display); font-style: italic; font-weight: 300;
  font-size: 40px; color: var(--accent-ice); line-height: 1;
  position: absolute; top: 14px; right: 18px;
}
.inspection-tier__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 600; color: var(--accent-blue); margin-bottom: 6px;
}
.inspection-tier__title {
  font-family: var(--font-display); font-size: 18px; font-weight: 500;
  color: var(--ink); margin: 0 0 8px; letter-spacing: -0.005em;
}
.inspection-tier__body {
  font-size: 12px; line-height: 1.6; color: var(--ink-muted); margin: 0;
}

/* ISCT marker diagram — positive vs negative surface markers */
.isct-panel {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin: 24px 0 8px;
}
.isct-col {
  background: #fff; border: 1px solid var(--border);
  padding: 24px 26px; border-radius: 2px;
}
.isct-col--pos { border-top: 3px solid #2A8A5B; }
.isct-col--neg { border-top: 3px solid #B85A4A; }
.isct-col__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 600; margin-bottom: 4px;
}
.isct-col--pos .isct-col__label { color: #1F6B45; }
.isct-col--neg .isct-col__label { color: #8A3F30; }
.isct-col__title {
  font-family: var(--font-display); font-size: 17px; font-weight: 500;
  color: var(--ink); margin: 0 0 4px; letter-spacing: -0.005em;
}
.isct-col__sub { font-size: 12px; color: var(--ink-muted); margin-bottom: 16px; }
.isct-markers { display: flex; flex-direction: column; gap: 8px; }
.isct-marker {
  display: grid; grid-template-columns: 28px 1fr 80px; gap: 12px;
  align-items: center; padding: 10px 12px;
  background: var(--accent-wash); border-radius: 2px;
}
.isct-marker__sign {
  width: 24px; height: 24px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 14px; font-weight: 500;
  color: #fff;
}
.isct-marker--pos .isct-marker__sign { background: #2A8A5B; }
.isct-marker--neg .isct-marker__sign { background: #B85A4A; }
.isct-marker__name {
  font-family: var(--font-display); font-size: 15px; color: var(--ink); font-weight: 500;
}
.isct-marker__name em { font-style: italic; color: var(--ink-muted); font-weight: 400; font-size: 12px; display: block; }
.isct-marker__spec {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink); background: #fff; padding: 4px 8px;
  border-radius: 2px; text-align: center; font-weight: 600;
  border: 1px solid var(--border);
}

/* Mock Certificate of Analysis */
.coa-mock {
  background: #fff; border: 1px solid var(--border);
  margin: 28px 0 8px; border-radius: 2px;
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  position: relative; overflow: hidden;
}
.coa-mock__watermark {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%) rotate(-22deg);
  font-family: var(--font-display); font-weight: 300; font-style: italic;
  font-size: 100px; color: var(--accent-wash);
  pointer-events: none; user-select: none; white-space: nowrap;
}
.coa-mock__head {
  padding: 22px 28px 18px; border-bottom: 1px solid var(--border);
  display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: end;
  position: relative;
}
.coa-mock__title {
  font-family: var(--font-display); font-size: 20px; font-weight: 500;
  color: var(--ink); margin: 0; letter-spacing: -0.005em;
}
.coa-mock__sub {
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); margin-top: 4px;
}
.coa-mock__doc-id {
  font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-muted); text-align: right;
}
.coa-mock__doc-id strong { color: var(--accent-blue); font-weight: 600; }
.coa-mock__meta {
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding: 18px 28px; gap: 14px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.coa-meta__key {
  font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); margin-bottom: 4px; font-weight: 600;
}
.coa-meta__val {
  font-family: var(--font-display); font-size: 14px;
  color: var(--ink); letter-spacing: -0.005em;
}
.coa-mock__results { padding: 18px 28px; position: relative; }
.coa-mock__results-label {
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); font-weight: 600; margin-bottom: 12px;
}
.coa-row {
  display: grid; grid-template-columns: 1fr 1.2fr 1fr 80px;
  gap: 12px; align-items: center;
  padding: 8px 0; border-bottom: 1px dotted var(--border); font-size: 11px;
}
.coa-row:last-child { border-bottom: none; }
.coa-row--header {
  font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); font-weight: 600;
  border-bottom: 1px solid var(--border);
}
.coa-row__assay { color: var(--ink); font-weight: 500; }
.coa-row__spec, .coa-row__value { color: var(--ink-muted); }
.coa-row__value strong { color: var(--ink); font-weight: 600; }
.coa-row__pass {
  font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase;
  font-weight: 600; padding: 4px 0; border-radius: 2px; text-align: center;
  background: #E6F2EC; color: #1F6B45;
}
.coa-mock__sig {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  padding: 20px 28px 22px; border-top: 1px solid var(--border);
  background: var(--accent-wash); position: relative;
}
.coa-sig__name {
  font-family: var(--font-display); font-style: italic; font-weight: 300;
  font-size: 22px; color: var(--ink); border-bottom: 1px solid var(--ink-muted);
  padding-bottom: 4px; margin-bottom: 6px;
}
.coa-sig__role {
  font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted); font-weight: 600;
}
.coa-sig__date {
  font-family: var(--font-display); font-size: 15px;
  color: var(--ink); padding-bottom: 4px; margin-bottom: 6px;
  border-bottom: 1px solid var(--ink-muted);
}

/* Test timeline — when each test happens across manufacturing */
.test-timeline {
  background: #fff; border: 1px solid var(--border);
  padding: 28px 32px 24px; border-radius: 2px; margin: 24px 0 8px;
}
.test-timeline__label {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-muted); font-weight: 600; margin-bottom: 18px;
}
.test-timeline__track {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0; position: relative; margin-bottom: 14px;
}
.test-timeline__track::before {
  content: ''; position: absolute; top: 12px; left: 6%; right: 6%;
  height: 2px; background: var(--border);
}
.tt-stage {
  display: flex; flex-direction: column; align-items: center;
  position: relative; padding-top: 0;
}
.tt-stage__dot {
  width: 24px; height: 24px; border-radius: 50%;
  background: #fff; border: 2px solid var(--accent-blue);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 12px; font-weight: 500;
  color: var(--accent-blue); z-index: 1; margin-bottom: 10px;
}
.tt-stage__name {
  font-family: var(--font-display); font-size: 14px; font-weight: 500;
  color: var(--ink); text-align: center; margin-bottom: 2px; letter-spacing: -0.005em;
}
.tt-stage__sub {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-muted); text-align: center; margin-bottom: 12px;
}
.tt-stage__tests {
  list-style: none; padding: 0 8px; margin: 0;
  font-size: 11px; line-height: 1.55; color: var(--ink-muted);
}
.tt-stage__tests li {
  padding: 4px 0; text-align: center;
  border-top: 1px dotted var(--border);
}
.tt-stage__tests li:first-child { border-top: none; }

@media (max-width: 900px) {
  .cleanroom-stack { grid-template-columns: 1fr; }
  .gate-flow { grid-template-columns: 1fr; }
  .gate-arrow { transform: rotate(90deg); padding: 8px 0; min-height: 30px; }
  .inspection-stack { grid-template-columns: 1fr; }
  .release-row { grid-template-columns: 1fr; gap: 4px; }
  .isct-panel { grid-template-columns: 1fr; }
  .coa-mock__meta { grid-template-columns: 1fr 1fr; }
  .coa-row { grid-template-columns: 1fr; gap: 4px; }
  .coa-mock__watermark { font-size: 60px; }
  .test-timeline__track { grid-template-columns: 1fr; gap: 24px; }
  .test-timeline__track::before { display: none; }
}

@media (max-width: 900px) {
  .learn-article { padding: 36px 18px 18px; }
  .section-block { grid-template-columns: 1fr; gap: 14px; }
  .section-block-num { position: static; }
  .compare-grid, .learn-related__grid { grid-template-columns: 1fr; }
  .divergence-chart__row { grid-template-columns: 1fr; gap: 10px; }
  .tldr, .learn-checklist { padding: 24px; }
}