/* Architecture-led and experiment-led Kojable Case Study publications */
.case-study-article {
  --case-study-surface: var(--resource-surface);
  --case-study-surface-soft: var(--resource-surface-soft);
  --case-study-surface-muted: var(--resource-surface-muted);
  --case-study-text: var(--resource-text);
  --case-study-text-soft: var(--resource-text-soft);
  --case-study-border: var(--resource-border);
  --case-study-border-strong: var(--resource-border-strong);
  --case-study-primary: var(--page-primary);
  --case-study-primary-soft: var(--page-primary-soft);
  --case-study-primary-border: var(--page-primary-border);
  --case-study-secondary: var(--page-secondary);
  --case-study-secondary-soft: var(--page-secondary-soft);
  --case-study-secondary-border: var(--page-secondary-border);
  overflow-x: clip;
  background: var(--case-study-surface);
  color: var(--case-study-text);
  font-family: var(--resource-font);
}

.case-study-container {
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
}

.case-study-publication {
  min-width: 0;
}

.case-study-publication a:not(.btn),
.case-study-article .resource-detail-nav a,
.case-study-article .resource-publication-meta a {
  color: var(--case-study-primary);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

.case-study-masthead {
  position: relative;
  padding: clamp(4rem, 9vw, 8rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  border-top: 0.45rem solid var(--case-study-primary);
  border-bottom: 1px solid var(--case-study-border-strong);
  background: var(--case-study-surface);
}

.case-study-masthead::after {
  content: "";
  position: absolute;
  right: max(1.5rem, calc((100vw - 1180px) / 2));
  bottom: -1px;
  width: min(30vw, 22rem);
  border-bottom: 0.45rem solid var(--case-study-secondary);
}

.case-study-masthead__kicker,
.case-study-zone__label {
  margin: 0 0 0.75rem;
  color: var(--case-study-primary);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.case-study-masthead__title {
  max-width: 19ch;
  margin: 0;
  color: var(--case-study-text);
  font-family: var(--font-family-heading, var(--resource-font));
  font-size: clamp(2.45rem, 7vw, 5.65rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.case-study-publication--measurement .case-study-masthead__title {
  max-width: 16ch;
}

.case-study-masthead__deck {
  max-width: 76ch;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  color: var(--case-study-text-soft);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.7;
}

.case-study-masthead__thesis {
  max-width: 78ch;
  margin: 1.5rem 0 0;
  padding-left: 1.1rem;
  border-left: 0.3rem solid var(--case-study-primary);
  color: var(--case-study-text);
  font-size: 1.05rem;
  line-height: 1.65;
}

.case-study-masthead--measurement .case-study-masthead__thesis {
  border-left-color: var(--case-study-secondary);
}

.case-study-case-file {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  padding: 0;
  border-block: 1px solid var(--case-study-border-strong);
}

.case-study-case-file__item {
  min-width: 0;
  padding: 1.15rem 1.25rem 1.15rem 0;
}

.case-study-case-file__item + .case-study-case-file__item {
  padding-left: 1.25rem;
  border-left: 1px solid var(--case-study-border);
}

.case-study-case-file dt,
.case-study-sample-strip dt {
  color: var(--case-study-text-soft);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-study-case-file dd {
  margin: 0.4rem 0 0;
  color: var(--case-study-text);
  font-weight: 750;
  line-height: 1.35;
}

.case-study-canvas {
  position: relative;
  padding: clamp(3rem, 7vw, 6rem) 0;
  border-bottom: 1px solid var(--case-study-border-strong);
  background: var(--case-study-surface-soft);
}

.case-study-canvas::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 0.45rem;
  background: var(--case-study-primary);
}

.case-study-experiment-map::before {
  background: var(--case-study-secondary);
}

.case-study-canvas__header,
.case-study-canvas .case-study-narrative__heading {
  max-width: 820px;
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.case-study-canvas h2 {
  margin: 0;
  color: var(--case-study-text);
  font-family: var(--font-family-heading, var(--resource-font));
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.case-study-canvas__header > p:last-child,
.case-study-canvas .case-study-narrative__heading > p:last-child {
  max-width: 68ch;
  margin: 1rem 0 0;
  color: var(--case-study-text-soft);
  line-height: 1.65;
}

.case-study-canvas__body {
  min-width: 0;
}

.case-study-flow {
  counter-reset: case-stage;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  border-block: 1px solid var(--role-mechanics-border);
  list-style: none;
}

.case-study-flow__stage,
.case-study-flow > li {
  position: relative;
  counter-increment: case-stage;
  min-width: 0;
  padding: 2.6rem 1.15rem 1.35rem;
  border-left: 1px solid var(--role-mechanics-border);
  background: var(--case-study-surface);
}

.case-study-flow > li:nth-child(4n) {
  border-right: 1px solid var(--role-mechanics-border);
}
.case-study-flow > li:nth-child(n + 5) {
  border-top: 1px solid var(--role-mechanics-border);
}

.case-study-flow__stage::before,
.case-study-flow > li::before {
  content: counter(case-stage, decimal-leading-zero);
  position: absolute;
  top: 0.85rem;
  left: 1.15rem;
  color: var(--role-mechanics-text);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.case-study-flow__stage::after,
.case-study-flow > li::after {
  content: "";
  position: absolute;
  top: 1.1rem;
  right: -0.28rem;
  z-index: 1;
  width: 0.5rem;
  height: 0.5rem;
  border-top: 2px solid var(--role-mechanics-text);
  border-right: 2px solid var(--role-mechanics-text);
  transform: rotate(45deg);
}

.case-study-flow > li:nth-child(4n)::after,
.case-study-flow > li:last-child::after {
  display: none;
}

.case-study-flow h3 {
  margin: 0;
  color: var(--case-study-text);
  font-size: 1rem;
  line-height: 1.35;
}

.case-study-flow p {
  margin: 0.6rem 0 0;
  color: var(--case-study-text-soft);
  font-size: 0.9rem;
  line-height: 1.55;
}

.case-study-flow__phase {
  display: block;
  margin: -0.25rem 0 0.55rem;
  color: var(--role-mechanics-text);
  font-size: 0.65rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.case-study-system-map--branched .case-study-flow {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-study-system-map--branched .case-study-flow > li:nth-child(n) {
  border-top: 0;
  border-right: 0;
}

.case-study-system-map--branched .case-study-flow > li:last-child {
  border-right: 1px solid var(--role-mechanics-border);
}
.case-study-system-map--branched .case-study-flow > li:nth-child(4n)::after {
  display: block;
}

.case-study-input,
.case-study-control,
.case-study-decision-point,
.case-study-output {
  border-color: var(--role-mechanics-border);
  color: var(--case-study-text);
}

.case-study-system-map
  > .case-study-container
  > .case-study-canvas__body
  > .case-study-output,
.case-study-experiment-map .case-study-output,
.case-study-experiment-map .case-study-input {
  display: grid;
  gap: 0.3rem;
  margin: 1rem 0 0;
  padding: 1rem 1.2rem;
  border: 1px solid var(--case-study-secondary-border);
  border-left: 0.35rem solid var(--case-study-secondary);
  background: var(--case-study-surface);
}

.case-study-input span,
.case-study-output span,
.case-study-result-band span {
  color: var(--case-study-secondary);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.case-study-lanes {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--case-study-primary-border);
}

.case-study-lanes::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  height: 2rem;
  border-left: 2px solid var(--case-study-primary-border);
}

.case-study-lane {
  position: relative;
  padding: 1.5rem 0 0;
  border-top: 0.4rem solid var(--case-study-primary);
}

.case-study-lane:nth-child(2) {
  border-top-color: var(--case-study-secondary);
}

.case-study-lane h3 {
  margin: 0;
  color: var(--case-study-text);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
}

.case-study-lane p {
  color: var(--case-study-text-soft);
  line-height: 1.55;
}

.case-study-lane .case-study-control,
.case-study-lane .case-study-output {
  margin: 0.75rem 0 0;
  padding: 0.7rem 0 0.7rem 1rem;
  border-left: 0.25rem solid var(--role-mechanics-border);
}

.case-study-lane .case-study-output {
  border-left-color: var(--role-example-border);
}

.case-study-sample-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0 0 2rem;
  padding: 0;
  border-block: 1px solid var(--case-study-secondary-border);
}

.case-study-sample-strip > div {
  padding: 1rem 1.25rem;
}
.case-study-sample-strip > div + div {
  border-left: 1px solid var(--case-study-secondary-border);
}

.case-study-sample-strip dd {
  margin: 0.25rem 0 0;
  color: var(--case-study-secondary);
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 850;
}

.case-study-measurement-flow {
  counter-reset: measurement-stage;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.case-study-measurement-flow li {
  position: relative;
  padding: 1.25rem 1.5rem 1.25rem 1.25rem;
  border-top: 0.3rem solid var(--case-study-secondary);
  background: var(--case-study-surface);
}

.case-study-measurement-flow li + li {
  border-left: 1px solid var(--case-study-secondary-border);
}

.case-study-measurement-flow li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: -0.44rem;
  right: -0.35rem;
  z-index: 1;
  width: 0.65rem;
  height: 0.65rem;
  border-top: 2px solid var(--case-study-secondary);
  border-right: 2px solid var(--case-study-secondary);
  background: var(--case-study-surface-soft);
  transform: rotate(45deg);
}

.case-study-measurement-flow span {
  color: var(--case-study-secondary);
  font-size: 0.75rem;
  font-weight: 900;
}

.case-study-measurement-flow h3 {
  margin: 0.55rem 0 0;
  font-size: 1rem;
  line-height: 1.35;
}
.case-study-measurement-flow p {
  margin: 0.55rem 0 0;
  color: var(--case-study-text-soft);
  font-size: 0.9rem;
  line-height: 1.5;
}

.case-study-result-band {
  display: grid;
  grid-template-columns: minmax(8rem, 0.25fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  border-block: 1px solid var(--role-caveat-border);
  background: var(--role-caveat-bg);
}

.case-study-result-band p {
  margin: 0;
  color: var(--case-study-text);
  line-height: 1.5;
}

.case-study-parallel-observations {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 1rem;
  border: 1px solid var(--case-study-primary-border);
  background: var(--case-study-primary-border);
}

.case-study-observation {
  display: grid;
  gap: 0.4rem;
  min-height: 7.5rem;
  padding: 1.25rem;
  align-content: center;
  background: var(--case-study-surface);
  text-align: center;
}

.case-study-observation span {
  color: var(--case-study-primary);
  font-size: 0.68rem;
  font-weight: 850;
  text-transform: uppercase;
}
.case-study-observation strong {
  color: var(--case-study-text);
  font-size: 1.1rem;
}

.case-study-body {
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.case-study-index {
  position: sticky;
  top: 4.65rem;
  z-index: 8;
  border-bottom: 1px solid var(--case-study-border-strong);
  background: color-mix(in srgb, var(--case-study-surface) 94%, transparent);
  backdrop-filter: blur(12px);
}

.case-study-index__inner {
  position: relative;
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
  padding: 0.9rem 0;
}

.case-study-index__inner::after {
  position: absolute;
  right: 0;
  bottom: 0.75rem;
  z-index: 1;
  width: 3rem;
  height: 2.35rem;
  background: linear-gradient(90deg, transparent, var(--case-study-surface));
  content: "";
  pointer-events: none;
}

.case-study-index h2 {
  margin: 0;
  color: var(--case-study-text-soft);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-study-index__list {
  counter-reset: case-index;
  display: flex;
  gap: 0;
  margin: 0.65rem 0 0;
  padding: 0 3.25rem 0.25rem 0;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scroll-padding-inline: 1rem 3.25rem;
  list-style: none;
  scrollbar-width: thin;
}

.case-study-index__list::-webkit-scrollbar {
  height: 0.35rem;
}

.case-study-index__item {
  counter-increment: case-index;
  flex: 0 0 auto;
}
.case-study-index__item + .case-study-index__item {
  border-left: 1px solid var(--case-study-border);
}

.case-study-index__item a {
  display: flex;
  gap: 0.45rem;
  align-items: baseline;
  padding: 0.25rem 0.85rem;
  color: var(--case-study-text-soft);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.case-study-index__item a::before {
  content: counter(case-index, decimal-leading-zero);
  color: var(--case-study-primary);
  font-size: 0.68rem;
  font-weight: 900;
}
.case-study-index__item a:hover,
.case-study-index__item a[aria-current="location"] {
  color: var(--case-study-text);
}
.case-study-index__item a[aria-current="location"] {
  box-shadow: inset 0 -0.2rem 0 var(--case-study-primary);
}

.case-study-content {
  min-width: 0;
}

.case-study-narrative-section {
  padding: clamp(3rem, 7vw, 6rem) 0;
  border-top: 1px solid var(--case-study-border);
  background: var(--case-study-surface);
}

.case-study-content > .case-study-narrative-section:first-child {
  border-top: 0;
}

.case-study-narrative {
  display: grid;
  grid-template-columns: minmax(12rem, 0.35fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.case-study-narrative__heading {
  max-width: 760px;
}
.case-study-narrative__heading--wide {
  max-width: 880px;
  margin-bottom: 2rem;
}

.case-study-narrative__heading h2 {
  margin: 0;
  color: var(--case-study-text);
  font-size: clamp(1.85rem, 4vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.case-study-narrative__heading h3 {
  margin: 0;
  color: var(--case-study-text);
}
.case-study-narrative__heading > p:not(.case-study-zone__label),
.case-study-narrative__body {
  color: var(--case-study-text-soft);
  line-height: 1.75;
}
.case-study-narrative__heading > p:not(.case-study-zone__label) {
  margin: 1rem 0 0;
}
.case-study-narrative__body {
  max-width: 760px;
}
.case-study-narrative__body > :first-child {
  margin-top: 0;
}
.case-study-narrative__body h3 {
  margin: 2rem 0 0;
  color: var(--case-study-text);
}

.case-study-narrative-section--wide .case-study-container,
.case-study-narrative-section--system .case-study-container,
.case-study-wide-breakout {
  width: min(1180px, calc(100% - 3rem));
}

.case-study-wide-breakout {
  margin: 2rem auto 0;
  padding: 0;
  border-block: 1px solid var(--case-study-border-strong);
}

.case-study-wide-breakout > .case-study-flow {
  margin: 0;
}

.case-study-zone,
.case-study-problem-zone,
.case-study-decision-zone,
.case-study-outcome-zone,
.case-study-limitations-zone,
.case-study-provenance-zone {
  border-left: 0.35rem solid;
}

.case-study-problem-zone {
  border-left-color: var(--role-previous-state-text);
  background: linear-gradient(
    90deg,
    var(--role-previous-state-bg),
    var(--case-study-surface) 28%
  );
}
.case-study-decision-zone {
  border-left-color: var(--role-mechanics-text);
  background: linear-gradient(
    90deg,
    var(--role-mechanics-bg),
    var(--case-study-surface) 28%
  );
}
.case-study-outcome-zone {
  border-left-color: var(--role-example-text);
  background: linear-gradient(
    90deg,
    var(--role-example-bg),
    var(--case-study-surface) 28%
  );
}
.case-study-limitations-zone {
  border-left-color: var(--role-caveat-text);
  background: linear-gradient(
    90deg,
    var(--role-caveat-bg),
    var(--case-study-surface) 28%
  );
}

.case-study-provenance-zone {
  border-left-color: var(--resource-border-strong);
  background: linear-gradient(
    90deg,
    var(--resource-surface-soft),
    var(--resource-surface) 28%
  );
}

.case-study-problem-zone .case-study-zone__label,
.case-study-role-previous-state .case-study-zone__label {
  color: var(--role-previous-state-text);
}
.case-study-decision-zone .case-study-zone__label {
  color: var(--role-mechanics-text);
}
.case-study-outcome-zone .case-study-zone__label {
  color: var(--role-example-text);
}
.case-study-limitations-zone .case-study-zone__label {
  color: var(--role-caveat-text);
}
.case-study-role-definition .case-study-zone__label {
  color: var(--role-definition-text);
}
.case-study-provenance-zone .case-study-zone__label {
  color: var(--resource-text-soft);
}
.case-study-role-confirmed {
  background: var(--role-confirmed-bg);
}
.case-study-role-confirmed .case-study-zone__label {
  color: var(--role-confirmed-text);
}

.case-study-article .case-study-improvement-list.resource-list--steps {
  --resource-list-accent: var(--role-mechanics-text);
  --resource-list-border: var(--role-mechanics-border);
  margin-top: 2rem;
}

.case-study-article .case-study-improvement-list .resource-list__title {
  font-size: 1.15rem;
}

.case-study-article
  .case-study-improvement-list
  .resource-list__text
  > :first-child {
  margin-top: 0.75rem;
}

.case-study-article
  .case-study-improvement-list
  .resource-list__text
  > :last-child {
  margin-bottom: 0;
}

.case-study-improvement-phase {
  margin: 0 0 1rem;
  padding-top: 1.25rem;
  border-top: 0.2rem solid var(--role-mechanics-border);
  color: var(--role-mechanics-text);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case-study-definition-grid {
  margin-top: 0;
}

.case-study-evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 2rem;
  margin-top: 2rem;
}

.case-study-evidence {
  padding: 1.2rem 0;
  border-top: 1px solid var(--case-study-border-strong);
  background: transparent;
}

.case-study-evidence h3 {
  margin: 0;
  color: var(--case-study-text);
  font-size: 1.05rem;
  line-height: 1.4;
}
.case-study-evidence p {
  margin: 0.6rem 0 0;
  color: var(--case-study-text-soft);
  line-height: 1.6;
}
.case-study-evidence > span {
  color: var(--case-study-primary);
  font-size: 0.7rem;
  font-weight: 850;
  text-transform: uppercase;
}

.case-study-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--case-study-border-strong);
  border-radius: var(--resource-radius-md);
  background: var(--case-study-surface);
  -webkit-overflow-scrolling: touch;
}

.case-study-table-wrap:focus-visible {
  outline: 3px solid var(--signal-ring);
  outline-offset: 3px;
}

.case-study-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  color: var(--case-study-text);
  text-align: left;
}

.case-study-table caption {
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--case-study-primary-border);
  background: var(--case-study-primary-soft);
  color: var(--case-study-primary);
  font-weight: 800;
  text-align: left;
}

.case-study-table th,
.case-study-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--case-study-border);
  vertical-align: top;
  line-height: 1.55;
}
.case-study-table thead th {
  background: var(--case-study-surface-soft);
  color: var(--case-study-text);
}
.case-study-table tbody th {
  color: var(--case-study-text);
}
.case-study-table tbody td {
  color: var(--case-study-text-soft);
}
.case-study-table tr:last-child > * {
  border-bottom: 0;
}

.case-study-table .case-study-role-previous-state {
  background: var(--role-previous-state-bg);
  color: var(--role-previous-state-text);
}

.case-study-table .case-study-role-confirmed {
  background: var(--role-confirmed-bg);
  color: var(--role-confirmed-text);
}

.case-study-flow__closing {
  margin: 1.25rem 0 0;
  padding-left: 1rem;
  border-left: 0.25rem solid var(--role-caveat-border);
  color: var(--case-study-text-soft);
}

.case-study-author {
  width: min(900px, calc(100% - 3rem));
  margin: clamp(3rem, 7vw, 5rem) auto;
  padding-top: 1.5rem;
  border-top: 0.35rem solid var(--case-study-primary);
}

.case-study-author__layout {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}
.case-study-author__portrait {
  width: 6.5rem;
  aspect-ratio: 1;
  border: 0.25rem solid var(--case-study-primary-soft);
  border-radius: 50%;
  object-fit: cover;
  object-position: center 22%;
}
.case-study-author h2 {
  margin: 0;
  color: var(--case-study-text);
  font-size: clamp(1.4rem, 3vw, 2rem);
}
.case-study-author p {
  color: var(--case-study-text-soft);
  line-height: 1.65;
}
.case-study-author__identity {
  display: grid;
  gap: 0.2rem;
  margin-top: 0.85rem;
}
.case-study-author__identity strong {
  color: var(--case-study-text);
}
.case-study-author__identity span {
  color: var(--case-study-primary);
  font-size: 0.9rem;
  font-weight: 750;
}
.case-study-author--organisation .case-study-author__layout {
  grid-template-columns: 1fr;
}

@media (max-width: 900px) {
  .case-study-case-file {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .case-study-case-file__item:nth-child(3) {
    padding-left: 0;
    border-top: 1px solid var(--case-study-border);
    border-left: 0;
  }
  .case-study-case-file__item:nth-child(4) {
    border-top: 1px solid var(--case-study-border);
  }
  .case-study-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .case-study-flow > li:nth-child(n) {
    border-top: 0;
    border-right: 0;
  }
  .case-study-flow > li:nth-child(2n) {
    border-right: 1px solid var(--role-mechanics-border);
  }
  .case-study-flow > li:nth-child(n + 3) {
    border-top: 1px solid var(--role-mechanics-border);
  }
  .case-study-flow > li:nth-child(2n)::after {
    display: none;
  }
  .case-study-flow > li:nth-child(4n)::after {
    display: none;
  }
  .case-study-flow > li:not(:nth-child(2n)):not(:last-child)::after {
    display: block;
  }
  .case-study-system-map--branched .case-study-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .case-study-system-map--branched .case-study-flow > li:nth-child(n) {
    border-top: 0;
    border-right: 0;
  }
  .case-study-system-map--branched .case-study-flow > li:last-child {
    border-right: 1px solid var(--role-mechanics-border);
  }
  .case-study-measurement-flow,
  .case-study-parallel-observations {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .case-study-measurement-flow li:nth-child(3) {
    border-left: 0;
  }
  .case-study-measurement-flow li:nth-child(n + 3) {
    border-top-color: var(--case-study-secondary);
  }
  .case-study-narrative {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 640px) {
  .case-study-index {
    position: relative;
    top: auto;
  }

  .case-study-container,
  .case-study-index__inner,
  .case-study-wide-breakout,
  .case-study-author,
  .case-study-narrative-section--wide .case-study-container,
  .case-study-narrative-section--system .case-study-container {
    width: min(100% - 2rem, 1180px);
  }
  .case-study-masthead {
    padding-top: 3rem;
  }
  .case-study-masthead__title {
    font-size: clamp(2.25rem, 12vw, 3.6rem);
  }
  .case-study-case-file {
    grid-template-columns: 1fr;
  }
  .case-study-case-file__item:nth-child(n) {
    padding: 0.9rem 0;
    border-top: 1px solid var(--case-study-border);
    border-left: 0;
  }
  .case-study-case-file__item:first-child {
    border-top: 0;
  }
  .case-study-canvas {
    padding-block: 3rem;
  }
  .case-study-flow,
  .case-study-system-map--branched .case-study-flow,
  .case-study-measurement-flow,
  .case-study-parallel-observations,
  .case-study-lanes,
  .case-study-sample-strip,
  .case-study-evidence-grid {
    grid-template-columns: 1fr;
  }
  .case-study-flow > li:nth-child(n),
  .case-study-system-map--branched .case-study-flow > li:nth-child(n) {
    padding: 2.5rem 1rem 1.25rem;
    border-top: 1px solid var(--role-mechanics-border);
    border-right: 1px solid var(--role-mechanics-border);
  }
  .case-study-flow > li:first-child,
  .case-study-system-map--branched .case-study-flow > li:first-child {
    border-top: 0;
  }
  .case-study-flow > li:nth-child(n)::after,
  .case-study-system-map--branched .case-study-flow > li:nth-child(n)::after {
    top: auto;
    right: 50%;
    bottom: -0.3rem;
    display: block;
    transform: rotate(135deg);
  }
  .case-study-flow > li:last-child::after {
    display: none;
  }
  .case-study-lanes {
    gap: 2.5rem;
    padding-top: 1.5rem;
  }
  .case-study-lanes::before {
    left: 1rem;
    height: 1.5rem;
  }
  .case-study-measurement-flow li + li {
    border-left: 0;
  }
  .case-study-measurement-flow li:not(:last-child)::after {
    top: auto;
    right: 50%;
    bottom: -0.35rem;
    transform: rotate(135deg);
  }
  .case-study-sample-strip > div + div {
    border-top: 1px solid var(--case-study-secondary-border);
    border-left: 0;
  }
  .case-study-result-band {
    grid-template-columns: 1fr;
  }

  .case-study-author__layout {
    grid-template-columns: 1fr;
  }
}

@media (prefers-color-scheme: dark) {
  .case-study-index {
    background: color-mix(in srgb, var(--case-study-surface) 92%, transparent);
  }

  .case-study-canvas,
  .case-study-flow > li,
  .case-study-measurement-flow li,
  .case-study-observation {
    box-shadow: none;
  }
}

@media (max-width: 520px) {
  .case-study-article
    .case-study-improvement-list.resource-list--steps
    > .resource-list__item,
  .case-study-article .resource-list--constraints > .resource-list__item {
    grid-template-columns: minmax(0, 1fr);
  }

  .case-study-article
    .case-study-improvement-list.resource-list--steps
    > .resource-list__item::before,
  .case-study-article
    .case-study-improvement-list.resource-list--steps
    > .resource-list__item
    > .resource-list__body,
  .case-study-article
    .resource-list--constraints
    > .resource-list__item
    > .resource-list__title,
  .case-study-article
    .resource-list--constraints
    > .resource-list__item
    > .resource-list__text {
    grid-column: 1;
  }

  .case-study-article
    .case-study-improvement-list.resource-list--steps
    > .resource-list__item::before {
    margin-bottom: 0.5rem;
  }

  .case-study-article
    .resource-list--constraints
    > .resource-list__item
    > .resource-list__text {
    margin-top: 0.35rem;
  }

  .case-study-article .case-study-definition-grid.resource-detail-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .case-study-article .resource-answer,
  .case-study-article .resource-list__body,
  .case-study-article .resource-list__text {
    max-width: 100%;
    min-width: 0;
  }

  .case-study-article :where(code, pre) {
    max-width: 100%;
    overflow-wrap: anywhere;
  }
}