.failure-lab-page {
  --failure-lab-ink: #f3f0e8;
  --failure-lab-muted: #a8a5a0;
  --failure-lab-dim: #716f6c;
  --failure-lab-line: rgba(243, 240, 232, 0.16);
  --failure-lab-panel: rgba(20, 20, 26, 0.84);
  --failure-lab-panel-deep: rgba(12, 12, 17, 0.9);
  --failure-lab-amber: #e1a85b;
  --failure-lab-cyan: #89c6c9;
  --failure-lab-violet: #b0a1d5;
  --failure-lab-blue: #9ab7df;
  color: var(--failure-lab-ink);
  background:
    radial-gradient(circle at 72% 8%, rgba(137, 198, 201, 0.08), transparent 32rem),
    linear-gradient(180deg, #0d0d13 0%, #0a0a0f 48%, #0d0d12 100%);
}

.failure-lab-page main {
  width: min(calc(100% - 48px), 1240px);
  margin: 0 auto;
  padding: clamp(3.5rem, 7vw, 7rem) 0 8rem;
}

.failure-lab-page :is(h1, h2, h3, h4, p, ul, ol, dl) {
  max-width: none;
}

.failure-lab-page a {
  overflow-wrap: anywhere;
}

.failure-lab-page a:focus-visible,
.failure-lab-page button:focus-visible,
.failure-lab-page input:focus-visible,
.failure-lab-page summary:focus-visible {
  outline: 2px solid var(--failure-lab-amber);
  outline-offset: 4px;
}

.failure-lab-visually-hidden,
.failure-lab-page .failure-lab-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.failure-lab-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(15rem, 0.65fr);
  gap: clamp(2rem, 6vw, 7rem);
  align-items: end;
  padding-bottom: clamp(3rem, 7vw, 7rem);
  border-bottom: 1px solid var(--failure-lab-line);
}

.failure-lab-hero > .eyebrow {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--failure-lab-amber);
  font: 500 0.72rem/1.3 "IBM Plex Mono", monospace;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.failure-lab-hero h1 {
  margin: 0;
  max-width: 9ch;
  color: var(--failure-lab-ink);
  font: 400 clamp(3.4rem, 9vw, 8.6rem)/0.92 "DM Serif Display", Georgia, serif;
  letter-spacing: -0.055em;
}

.failure-lab-hero h1 span {
  color: var(--failure-lab-amber);
}

.failure-lab-hero .lede {
  grid-column: 1;
  max-width: 45rem;
  margin: clamp(1.5rem, 3vw, 2.5rem) 0 0;
  color: var(--failure-lab-muted);
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  line-height: 1.65;
}

.failure-lab-actions {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.failure-lab-actions .action,
.failure-lab-reading-link {
  min-height: 44px;
}

.failure-lab-hero-boundary {
  grid-column: 2;
  grid-row: 2 / span 3;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.8rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid rgba(225, 168, 91, 0.52);
  border-left: 4px solid var(--failure-lab-amber);
  background: linear-gradient(145deg, rgba(225, 168, 91, 0.1), rgba(20, 20, 26, 0.45));
}

.failure-lab-label,
.failure-lab-kicker,
.failure-lab-reading-type,
.failure-lab-stage-index,
.failure-lab-stage-kind,
.failure-lab-boundary-facts dt,
.failure-lab-reading-facts dt {
  color: var(--failure-lab-dim);
  font: 500 0.68rem/1.4 "IBM Plex Mono", monospace;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.failure-lab-hero-boundary strong {
  color: var(--failure-lab-amber);
  font: 500 clamp(0.9rem, 1.4vw, 1.1rem)/1.35 "IBM Plex Mono", monospace;
  overflow-wrap: anywhere;
}

.failure-lab-hero-boundary p {
  margin: 0;
  color: var(--failure-lab-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.failure-lab-boundary,
.failure-lab-scenario,
.failure-lab-sequence,
.failure-lab-cross-cutting,
.failure-lab-unmapped,
.failure-lab-model-paths,
.failure-lab-destinations,
.failure-lab-reading-guide,
.failure-lab-guardrails {
  margin-top: clamp(4rem, 8vw, 8rem);
}

.failure-lab-boundary {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 2rem clamp(2rem, 8vw, 9rem);
  padding: clamp(1.5rem, 4vw, 3rem) 0;
  border-top: 1px solid var(--failure-lab-line);
  border-bottom: 1px solid var(--failure-lab-line);
}

.failure-lab-boundary h2,
.failure-lab-section-intro h2,
.failure-lab-journey-heading h2,
.failure-lab-guardrails h2 {
  margin: 0.6rem 0 0;
  color: var(--failure-lab-ink);
  font: 400 clamp(2rem, 4.3vw, 4.3rem)/1 "DM Serif Display", Georgia, serif;
  letter-spacing: -0.04em;
}

.failure-lab-boundary > p,
.failure-lab-section-intro > p:last-child,
.failure-lab-journey-heading > p,
.failure-lab-guardrails > p:last-child {
  margin: 0;
  color: var(--failure-lab-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.failure-lab-boundary-facts {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 1rem 0 0;
  border: 1px solid var(--failure-lab-line);
  background: var(--failure-lab-line);
}

.failure-lab-boundary-facts div {
  min-width: 0;
  padding: 1rem;
  background: var(--failure-lab-panel-deep);
}

.failure-lab-boundary-facts dd {
  margin: 0.55rem 0 0;
  color: var(--failure-lab-ink);
  font: 500 0.9rem/1.45 "IBM Plex Mono", monospace;
}

.failure-lab-section-intro {
  max-width: 52rem;
}

.failure-lab-section-intro .failure-lab-kicker,
.failure-lab-kicker {
  margin: 0;
  color: var(--failure-lab-amber);
}

.failure-lab-section-intro > p:last-child {
  margin-top: 1.25rem;
}

.failure-lab-scenario-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(18rem, 0.9fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.failure-lab-scenario-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.failure-lab-scenario-option {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  min-width: 0;
  min-height: 44px;
  padding: 1rem;
  border: 1px solid var(--failure-lab-line);
  background: rgba(17, 17, 23, 0.72);
  cursor: pointer;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.failure-lab-scenario-option:hover {
  border-color: rgba(225, 168, 91, 0.55);
  background: rgba(35, 31, 27, 0.82);
  transform: translateY(-2px);
}

.failure-lab-scenario-option:has(input:checked) {
  border-color: var(--failure-lab-amber);
  background: rgba(225, 168, 91, 0.11);
}

.failure-lab-scenario-option input {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  margin: 0;
  accent-color: var(--failure-lab-amber);
}

.failure-lab-scenario-option > span {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
}

.failure-lab-scenario-option strong {
  color: var(--failure-lab-ink);
  font: 500 0.95rem/1.35 "IBM Plex Mono", monospace;
}

.failure-lab-scenario-option small {
  color: var(--failure-lab-muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.failure-lab-scenario-reading {
  min-width: 0;
  padding: clamp(1.35rem, 3vw, 2.25rem);
  border: 1px solid rgba(137, 198, 201, 0.5);
  background: linear-gradient(145deg, rgba(137, 198, 201, 0.1), rgba(20, 20, 26, 0.88));
}

.failure-lab-context-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.25rem 0.55rem;
  border: 1px solid rgba(137, 198, 201, 0.55);
  color: var(--failure-lab-cyan);
  font: 500 0.64rem/1.2 "IBM Plex Mono", monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.failure-lab-scenario-reading h3 {
  margin: 1.3rem 0 0;
  color: var(--failure-lab-ink);
  font: 400 clamp(1.8rem, 4vw, 3.25rem)/1 "DM Serif Display", Georgia, serif;
  letter-spacing: -0.04em;
}

.failure-lab-scenario-reading > p {
  margin: 1rem 0 0;
  color: var(--failure-lab-muted);
  line-height: 1.65;
}

.failure-lab-boundary-note {
  margin-top: 1.5rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--failure-lab-line);
}

.failure-lab-boundary-note strong {
  color: var(--failure-lab-amber);
  font: 500 0.72rem/1.3 "IBM Plex Mono", monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.failure-lab-boundary-note ul,
.failure-lab-reading details ul,
.failure-lab-guardrails ul {
  margin: 0.7rem 0 0;
  padding-left: 1.2rem;
}

.failure-lab-boundary-note li,
.failure-lab-reading details li,
.failure-lab-guardrails li {
  margin: 0.45rem 0;
  color: var(--failure-lab-muted);
  line-height: 1.55;
}

.failure-lab-stage-nav {
  margin-top: 2.5rem;
  overflow: hidden;
  border-top: 1px solid var(--failure-lab-line);
  border-bottom: 1px solid var(--failure-lab-line);
}

.failure-lab-stage-nav ol {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.failure-lab-stage-nav li {
  min-width: 0;
  border-right: 1px solid var(--failure-lab-line);
}

.failure-lab-stage-nav li:last-child {
  border-right: 0;
}

.failure-lab-stage-nav a {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.45rem;
  min-height: 80px;
  padding: 0.8rem;
  color: var(--failure-lab-muted);
  font: 500 0.74rem/1.3 "IBM Plex Mono", monospace;
  text-decoration: none;
  transition: color 160ms ease, background-color 160ms ease;
}

.failure-lab-stage-nav a:hover {
  color: var(--failure-lab-ink);
  background: rgba(225, 168, 91, 0.08);
}

.failure-lab-stage-nav a span {
  color: var(--failure-lab-amber);
  font-size: 0.65rem;
}

.failure-lab-journey-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--failure-lab-line);
}

.failure-lab-journey-heading h2 {
  max-width: 22ch;
}

.failure-lab-journey-heading h2 span {
  color: var(--failure-lab-cyan);
}

.failure-lab-journey-status {
  max-width: 21rem;
  color: var(--failure-lab-dim) !important;
  font: 500 0.76rem/1.55 "IBM Plex Mono", monospace;
  text-align: right;
}

.failure-lab-stage-list {
  position: relative;
  margin: 0;
  padding: 3rem 0 0;
  list-style: none;
}

.failure-lab-stage-list::before {
  position: absolute;
  top: 3rem;
  bottom: 3rem;
  left: 2rem;
  width: 1px;
  background: linear-gradient(180deg, var(--failure-lab-amber), rgba(137, 198, 201, 0.6), rgba(176, 161, 213, 0.55), transparent);
  content: "";
}

.failure-lab-stage {
  --failure-lab-stage-accent: var(--failure-lab-amber);
  position: relative;
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2.5rem);
  min-width: 0;
  padding-bottom: 3rem;
}

.failure-lab-stage:nth-child(2) { --failure-lab-stage-accent: var(--failure-lab-blue); }
.failure-lab-stage:nth-child(3) { --failure-lab-stage-accent: var(--failure-lab-violet); }
.failure-lab-stage:nth-child(4) { --failure-lab-stage-accent: var(--failure-lab-cyan); }
.failure-lab-stage:nth-child(5) { --failure-lab-stage-accent: #d0a7c8; }

.failure-lab-stage-marker {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-width: 0;
}

.failure-lab-stage-marker span {
  display: grid;
  place-items: center;
  width: 4rem;
  height: 4rem;
  border: 1px solid var(--failure-lab-stage-accent);
  border-radius: 50%;
  background: #0d0d13;
  color: var(--failure-lab-stage-accent);
  font: 500 0.78rem/1 "IBM Plex Mono", monospace;
}

.failure-lab-stage-card {
  min-width: 0;
  padding: clamp(1.3rem, 3vw, 2.5rem);
  border: 1px solid var(--failure-lab-line);
  border-top: 2px solid var(--failure-lab-stage-accent);
  background: var(--failure-lab-panel);
}

.failure-lab-stage-header,
.failure-lab-reading > header,
.failure-lab-supporting-reading > header,
.failure-lab-unmapped-item > div {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  min-width: 0;
}

.failure-lab-stage-header h3 {
  max-width: 24ch;
  margin: 0.55rem 0 0;
  color: var(--failure-lab-ink);
  font: 400 clamp(1.55rem, 3vw, 2.65rem)/1.04 "DM Serif Display", Georgia, serif;
  letter-spacing: -0.03em;
}

.failure-lab-stage-kind {
  flex: 0 0 auto;
  padding-top: 0.15rem;
  color: var(--failure-lab-stage-accent);
  text-align: right;
}

.failure-lab-stage-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
  margin-top: 2rem;
}

.failure-lab-reading,
.failure-lab-supporting-reading,
.failure-lab-unmapped-stage,
.failure-lab-recovery-gap {
  min-width: 0;
  padding: clamp(1rem, 2.5vw, 1.5rem);
  border: 1px solid var(--failure-lab-line);
  background: rgba(10, 10, 15, 0.54);
}

.failure-lab-reading h4,
.failure-lab-unmapped-stage h4,
.failure-lab-recovery-gap h4 {
  margin: 0.45rem 0 0;
  color: var(--failure-lab-ink);
  font: 500 clamp(1.1rem, 2vw, 1.5rem)/1.2 "IBM Plex Mono", monospace;
}

.failure-lab-reading-type {
  margin: 0;
  color: var(--failure-lab-stage-accent, var(--failure-lab-amber));
}

.failure-lab-reading-question,
.failure-lab-unmapped-stage > p,
.failure-lab-recovery-gap > p,
.failure-lab-supporting-reading > p {
  margin: 1rem 0 0;
  color: var(--failure-lab-muted);
  line-height: 1.65;
}

.failure-lab-evidence-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
  min-width: 0;
}

.failure-lab-evidence {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  max-width: 100%;
  padding: 0.28rem 0.5rem;
  border: 1px solid rgba(243, 240, 232, 0.3);
  color: var(--failure-lab-ink);
  font: 500 0.66rem/1.25 "IBM Plex Mono", monospace;
  letter-spacing: 0.04em;
  text-align: center;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.failure-lab-evidence[data-evidence-mode="measured"] { border-color: rgba(225, 168, 91, 0.8); color: var(--failure-lab-amber); }
.failure-lab-evidence[data-evidence-mode="stale-measured"] { border-color: rgba(208, 167, 200, 0.8); color: #d0a7c8; }
.failure-lab-evidence[data-evidence-mode="recorded-replay"] { border-color: rgba(176, 161, 213, 0.8); color: var(--failure-lab-violet); }
.failure-lab-evidence[data-evidence-mode="simulated"] { border-color: rgba(154, 183, 223, 0.75); color: var(--failure-lab-blue); }
.failure-lab-evidence[data-evidence-mode="unavailable"],
.failure-lab-evidence[data-evidence-mode="unknown"],
.failure-lab-evidence[data-evidence-mode="not-applicable-unscored"] { border-style: dashed; color: var(--failure-lab-muted); }

.failure-lab-reading-facts {
  display: grid;
  grid-template-columns: minmax(9rem, 0.45fr) minmax(0, 1.55fr);
  gap: 0.7rem 1rem;
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--failure-lab-line);
}

.failure-lab-reading-facts div {
  display: contents;
}

.failure-lab-reading-facts dt {
  padding-top: 0.1rem;
}

.failure-lab-reading-facts dd {
  margin: 0;
  color: var(--failure-lab-ink);
  font-size: 0.9rem;
  line-height: 1.55;
}

.failure-lab-proof,
.failure-lab-proof-copy {
  margin-top: 1.25rem;
  padding: 1rem;
  border-left: 2px solid var(--failure-lab-stage-accent, var(--failure-lab-amber));
  background: rgba(243, 240, 232, 0.045);
}

.failure-lab-proof strong {
  color: var(--failure-lab-stage-accent, var(--failure-lab-amber));
  font: 500 0.7rem/1.3 "IBM Plex Mono", monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.failure-lab-proof p,
.failure-lab-proof-copy {
  margin-bottom: 0;
  color: var(--failure-lab-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.failure-lab-reading details {
  margin-top: 1rem;
  border-top: 1px solid var(--failure-lab-line);
}

.failure-lab-page summary {
  display: flex;
  align-items: center;
  min-width: 44px;
  min-height: 44px;
  padding: 0.75rem 0;
  color: var(--failure-lab-ink);
  cursor: pointer;
  font: 500 0.75rem/1.4 "IBM Plex Mono", monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.failure-lab-reading details ul {
  margin-bottom: 0;
}

.failure-lab-reading-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  width: fit-content;
  max-width: 100%;
  margin-top: 1.25rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid rgba(225, 168, 91, 0.65);
  color: var(--failure-lab-amber);
  font: 500 0.75rem/1.2 "IBM Plex Mono", monospace;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color 160ms ease, color 160ms ease;
}

.failure-lab-reading-link:hover {
  color: #0d0d13;
  background: var(--failure-lab-amber);
}

.failure-lab-next {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 44px;
  margin-top: 1.5rem;
  color: var(--failure-lab-stage-accent);
  font: 500 0.72rem/1.3 "IBM Plex Mono", monospace;
  text-decoration: none;
  text-transform: uppercase;
}

.failure-lab-next--end {
  color: var(--failure-lab-dim);
  cursor: default;
}

.failure-lab-unmapped-stage,
.failure-lab-recovery-gap {
  border-style: dashed;
  border-color: rgba(243, 240, 232, 0.3);
}

.failure-lab-unmapped-stage .failure-lab-evidence,
.failure-lab-recovery-gap .failure-lab-context-badge {
  margin-bottom: 0.4rem;
}

.failure-lab-supporting-content {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.failure-lab-supporting-reading {
  border-top: 2px solid var(--failure-lab-violet);
}

.failure-lab-supporting-reading h3,
.failure-lab-unmapped-item h3,
.failure-lab-path h3 {
  margin: 0.45rem 0 0;
  color: var(--failure-lab-ink);
  font: 500 clamp(1.1rem, 2vw, 1.5rem)/1.2 "IBM Plex Mono", monospace;
}

.failure-lab-supporting-reading .failure-lab-reading-link {
  margin-top: 1rem;
}

.failure-lab-unmapped-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 2.5rem;
  border: 1px solid var(--failure-lab-line);
  background: var(--failure-lab-line);
}

.failure-lab-unmapped-item {
  min-width: 0;
  padding: 1.25rem;
  background: var(--failure-lab-panel-deep);
}

.failure-lab-unmapped-item h3 {
  margin-top: 0;
  font-size: 1rem;
}

.failure-lab-unmapped-item > div {
  align-items: center;
}

.failure-lab-unmapped-item > p {
  margin: 1rem 0 0;
  color: var(--failure-lab-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.failure-lab-model-paths > details,
.failure-lab-destinations > details {
  border-top: 1px solid var(--failure-lab-line);
  border-bottom: 1px solid var(--failure-lab-line);
}

.failure-lab-model-paths summary,
.failure-lab-destinations summary {
  padding: 1.15rem 0;
  color: var(--failure-lab-amber);
}

.failure-lab-model-paths summary::marker,
.failure-lab-destinations summary::marker {
  color: var(--failure-lab-amber);
}

#narrative-content {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding: 0 0 1.5rem;
}

.failure-lab-path {
  min-width: 0;
  padding: 1.25rem;
  border: 1px solid var(--failure-lab-line);
  background: rgba(17, 17, 23, 0.7);
}

.failure-lab-path > p {
  margin: 1rem 0 0;
  color: var(--failure-lab-muted);
  line-height: 1.6;
}

.failure-lab-path ol {
  margin: 1.15rem 0 0;
  padding-left: 1.2rem;
}

.failure-lab-path li {
  margin: 0.5rem 0;
  color: var(--failure-lab-ink);
  font: 500 0.78rem/1.45 "IBM Plex Mono", monospace;
}

.failure-lab-path .failure-lab-omitted,
.failure-lab-path-note {
  color: var(--failure-lab-dim);
  font-size: 0.82rem;
}

.failure-lab-path-note {
  margin: 0;
  padding: 1rem 0 1.5rem;
  line-height: 1.6;
}

.failure-lab-destinations details > p {
  max-width: 50rem;
  margin: 0 0 1.25rem;
  color: var(--failure-lab-muted);
  line-height: 1.6;
}

.failure-lab-destinations ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--failure-lab-line);
  background: var(--failure-lab-line);
}

.failure-lab-destinations li {
  min-width: 0;
  background: var(--failure-lab-panel-deep);
}

.failure-lab-destinations li a {
  display: grid;
  gap: 0.35rem;
  min-height: 70px;
  padding: 1rem;
  color: var(--failure-lab-ink);
  text-decoration: none;
  transition: background-color 160ms ease;
}

.failure-lab-destinations li a:hover {
  background: rgba(225, 168, 91, 0.09);
}

.failure-lab-destinations li strong {
  color: var(--failure-lab-amber);
  font: 500 0.82rem/1.3 "IBM Plex Mono", monospace;
}

.failure-lab-destinations li span {
  color: var(--failure-lab-muted);
  font-size: 0.84rem;
  line-height: 1.45;
}

.failure-lab-mode-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 2.5rem 0 0;
  border: 1px solid var(--failure-lab-line);
  background: var(--failure-lab-line);
}

.failure-lab-mode-list div {
  min-width: 0;
  padding: 1rem;
  background: var(--failure-lab-panel-deep);
}

.failure-lab-mode-list dt,
.failure-lab-mode-list dd {
  margin: 0;
}

.failure-lab-mode-list dd {
  margin-top: 0.8rem;
  color: var(--failure-lab-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.failure-lab-guardrails {
  padding: clamp(1.4rem, 4vw, 3rem);
  border: 1px solid rgba(176, 161, 213, 0.48);
  background: linear-gradient(135deg, rgba(176, 161, 213, 0.1), rgba(20, 20, 26, 0.65));
}

.failure-lab-guardrails h2 {
  max-width: 18ch;
}

.failure-lab-guardrails ul {
  columns: 2;
  column-gap: clamp(2rem, 7vw, 7rem);
  margin-bottom: 0;
}

.failure-lab-guardrails li {
  break-inside: avoid;
  margin: 0.75rem 0;
}

.failure-lab-noscript {
  margin: 3rem 0 0;
  padding: 1rem;
  border: 1px dashed var(--failure-lab-line);
  color: var(--failure-lab-muted);
  font-size: 0.85rem;
  line-height: 1.55;
}

@media (max-width: 900px) {
  .failure-lab-hero,
  .failure-lab-scenario-layout {
    grid-template-columns: 1fr;
  }

  .failure-lab-hero-boundary {
    grid-column: 1;
    grid-row: auto;
    min-height: 12rem;
  }

  .failure-lab-scenario-reading {
    min-height: 0;
  }

  .failure-lab-stage-nav ol {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .failure-lab-stage-nav li:nth-child(3) {
    border-right: 0;
  }

  .failure-lab-stage-nav li:nth-child(-n + 3) {
    border-bottom: 1px solid var(--failure-lab-line);
  }

  .failure-lab-supporting-content,
  .failure-lab-unmapped-list,
  #narrative-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .failure-lab-page main {
    width: min(calc(100% - 32px), 1240px);
    padding-top: 2.75rem;
    padding-bottom: 6rem;
  }

  .failure-lab-hero h1 {
    max-width: 8ch;
    font-size: clamp(3.15rem, 16vw, 5rem);
  }

  .failure-lab-boundary,
  .failure-lab-scenario,
  .failure-lab-sequence,
  .failure-lab-cross-cutting,
  .failure-lab-unmapped,
  .failure-lab-model-paths,
  .failure-lab-destinations,
  .failure-lab-reading-guide,
  .failure-lab-guardrails {
    margin-top: 4.5rem;
  }

  .failure-lab-boundary {
    grid-template-columns: 1fr;
  }

  .failure-lab-boundary-facts,
  .failure-lab-scenario-options,
  .failure-lab-mode-list,
  .failure-lab-destinations ul {
    grid-template-columns: 1fr;
  }

  .failure-lab-scenario-options {
    gap: 0.5rem;
  }

  .failure-lab-scenario-option {
    padding: 0.85rem;
  }

  .failure-lab-stage-nav ol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .failure-lab-stage-nav li:nth-child(3) {
    border-right: 1px solid var(--failure-lab-line);
  }

  .failure-lab-stage-nav li:nth-child(odd) {
    border-right: 1px solid var(--failure-lab-line);
  }

  .failure-lab-stage-nav li:nth-child(even) {
    border-right: 0;
  }

  .failure-lab-stage-nav li:nth-child(n) {
    border-bottom: 1px solid var(--failure-lab-line);
  }

  .failure-lab-stage-nav li:nth-child(n + 5) {
    border-bottom: 0;
  }

  .failure-lab-journey-heading {
    display: block;
  }

  .failure-lab-journey-status {
    margin-top: 1rem;
    text-align: left;
  }

  .failure-lab-stage-list::before {
    left: 1.25rem;
  }

  .failure-lab-stage {
    grid-template-columns: 2.5rem minmax(0, 1fr);
    gap: 0.75rem;
  }

  .failure-lab-stage-marker span {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 0.65rem;
  }

  .failure-lab-stage-card {
    padding: 1rem;
  }

  .failure-lab-stage-header,
  .failure-lab-reading > header,
  .failure-lab-supporting-reading > header,
  .failure-lab-unmapped-item > div {
    display: block;
  }

  .failure-lab-stage-kind,
  .failure-lab-reading > header > .failure-lab-evidence,
  .failure-lab-reading > header > .failure-lab-evidence-list {
    display: flex;
    justify-content: flex-start;
    margin-top: 0.85rem;
    text-align: left;
  }

  .failure-lab-reading-facts {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .failure-lab-reading-facts dd {
    margin-bottom: 0.55rem;
  }

  .failure-lab-guardrails ul {
    columns: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .failure-lab-page *,
  .failure-lab-page *::before,
  .failure-lab-page *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}