.luna-teaser {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, .82fr);
  gap: 80px;
  align-items: center;
  padding: 110px max(24px, calc((100vw - var(--max)) / 2));
  background: var(--sand);
  scroll-margin-top: 100px;
}

.luna-teaser-copy h2 {
  max-width: 760px;
}

.hero h1 {
  font-size: clamp(2.55rem, 5vw, 4.9rem);
}

main h2 {
  font-size: clamp(1.9rem, 3.4vw, 3.1rem);
}

.luna-proof-chain,
.case-lifecycle,
.architecture-rules,
.status-list,
.release-flow,
.trace-chain,
.sequence-view,
.delivery-view {
  margin: 0;
  padding: 0;
  list-style: none;
}

.luna-proof-chain {
  padding: 22px 34px;
  border-radius: 10px;
  color: #fff;
  background: var(--navy);
}

.luna-proof-chain li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: baseline;
  padding: 18px 0;
  border-top: 1px solid #ffffff2b;
}

.luna-proof-chain li:first-child {
  border-top: 0;
}

.luna-proof-chain span,
.luna-proof-chain small {
  color: #86cbc8;
  font-weight: 800;
}

.luna-proof-chain small {
  text-align: right;
}

.case-main {
  overflow: hidden;
}

.luna-site-header > nav {
  gap: clamp(14px, 1.35vw, 22px);
}

.luna-site-header > nav a {
  font-size: .78rem;
}

.case-subnav {
  position: sticky;
  z-index: 40;
  top: 88px;
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .96);
}

.case-subnav a {
  min-height: 40px;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  padding: 7px 11px;
  color: var(--navy);
  text-decoration: none;
  font-size: .76rem;
  font-weight: 700;
}

.case-subnav a[aria-current="page"] {
  color: #fff;
  background: var(--petrol-dark);
}

.case-subnav .case-calculation-button {
  margin-left: 8px;
  padding-inline: 16px;
  color: #fff;
  background: var(--petrol-dark);
  border-radius: 6px;
}

.case-subnav .case-calculation-button:hover {
  background: var(--navy);
}

.case-hero,
.case-section,
.case-facts,
.softwaretest-case {
  padding: 104px max(24px, calc((100vw - var(--max)) / 2));
}

.case-hero {
  background: #f7f7f4;
}

.case-hero-image {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(420px, 1.05fr);
  gap: 72px;
  align-items: center;
}

.case-hero-copy h1 {
  max-width: 900px;
  font-size: clamp(2.4rem, 4.5vw, 4.35rem);
}

.case-hero-compact {
  min-height: 540px;
  display: flex;
  align-items: end;
  background: var(--sand);
}

.case-hero-compact .case-hero-copy {
  max-width: 970px;
}

.case-visual,
.reference-frame {
  margin: 0;
}

.case-visual img,
.reference-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.case-visual img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 10px;
}

.case-visual figcaption,
.reference-frame figcaption {
  margin-top: 12px;
  color: #5b6473;
  font-size: .88rem;
}

.case-section-dark .reference-frame figcaption {
  color: #c6cede;
}

.case-disclosure,
.case-source-note,
.model-note {
  max-width: 78ch;
  padding-left: 16px;
  border-left: 3px solid var(--petrol);
  color: #485365;
  font-size: .92rem;
}

.case-intro,
.case-design-states,
.traceability-section,
.documentation-principle {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 84px;
}

.case-intro p,
.documentation-principle p {
  font-size: 1.08rem;
}

.case-section-muted {
  background: var(--mist);
}

.case-section-dark {
  color: #dce4ef;
  background: var(--navy);
}

.case-section-dark h2,
.case-section-dark h3,
.case-section-dark .eyebrow {
  color: #fff;
}

.case-section-dark .eyebrow,
.case-section-dark .case-tag,
.case-section-dark .architecture-rules span {
  color: #86cbc8;
}

.case-section-heading {
  max-width: 880px;
  margin-bottom: 48px;
}

.case-lifecycle {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  margin-top: 48px;
  border: 1px solid #cbd2da;
  background: #cbd2da;
}

.case-lifecycle li {
  min-height: 290px;
  padding: 28px;
  background: #fff;
}

.case-lifecycle span,
.test-layer-grid article > span,
.release-flow li > span {
  color: var(--petrol-dark);
  font-weight: 800;
}

.case-card-grid,
.case-principles,
.architecture-grid,
.test-layer-grid,
.artifact-grid,
.evidence-grid {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.case-card-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.case-card-grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 44px;
}

.case-card-grid article,
.case-principles article,
.test-layer-grid article,
.artifact-grid article,
.evidence-grid article {
  padding: 30px;
  background: #fff;
}

.case-card-grid article {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.case-card-grid article p {
  flex-grow: 1;
}

.case-tag,
.artifact-grid article > span,
.bdd-card header > span {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--petrol-dark);
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.case-facts {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  color: #fff;
  background: #ffffff25;
  border-block: 1px solid #ffffff25;
  background-color: #0f1727;
}

.case-facts div {
  display: grid;
  align-content: center;
  min-height: 180px;
  padding: 28px;
  border-right: 1px solid #ffffff25;
}

.case-facts div:last-child {
  border-right: 0;
}

.case-facts strong {
  white-space: nowrap;
  color: #86cbc8;
  font-family: Manrope, Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: 2.8rem;
  line-height: 1;
}

.case-facts span {
  display: block;
  min-height: 3.3em;
  margin-top: 10px;
}

.reference-frame {
  padding: 16px;
  border: 1px solid #ffffff2b;
  background: #0f1727;
}

.case-design-states {
  align-items: center;
}

.case-design-states .reference-frame {
  border-color: var(--line);
  background: #f7f7f4;
}

.case-checks {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.case-checks li {
  position: relative;
  padding: 9px 0 9px 26px;
  border-top: 1px solid var(--line);
}

.case-checks li::before {
  position: absolute;
  left: 0;
  color: var(--petrol-dark);
  content: "✓";
  font-weight: 800;
}

.case-principles {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 44px 0 32px;
}

.case-principles h3 {
  min-height: 3.15em;
}

.model-panel {
  margin-top: 28px;
  padding: 34px;
  border: 1px solid #cbd2da;
  background: #fff;
}

.model-panel header {
  max-width: 780px;
}

.diagram-scroll {
  margin: 30px 0 24px;
  padding: 22px;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: #f8fafb;
}

.diagram-scroll:focus-visible {
  outline: 3px solid #e0a54f;
  outline-offset: 3px;
}

.diagram-flow {
  display: flex;
  align-items: center;
  min-width: 1080px;
  margin: 0;
  padding: 18px 0;
  list-style: none;
}

.diagram-flow-wide {
  min-width: 1120px;
}

.diagram-flow li {
  position: relative;
  display: grid;
  place-content: center;
  width: 118px;
  min-height: 112px;
  flex: 0 0 118px;
  padding: 12px;
  border: 2px solid #8290a3;
  background: #fff;
  text-align: center;
}

.diagram-flow li:not(:last-child) {
  margin-right: 20px;
}

.diagram-flow li:not(:last-child)::after {
  position: absolute;
  top: 50%;
  left: calc(100% + 8px);
  color: var(--petrol-dark);
  content: "→";
  font-size: 1.4rem;
  font-weight: 800;
  transform: translateY(-50%);
}

.diagram-flow .diagram-event {
  width: 104px;
  flex-basis: 104px;
  border-radius: 999px;
  border-color: var(--petrol-dark);
}

.diagram-flow .diagram-gateway {
  border-color: var(--petrol-dark);
  background: var(--sand);
}

.diagram-flow .diagram-gateway::before {
  position: absolute;
  top: -9px;
  left: 50%;
  width: 15px;
  height: 15px;
  border: 2px solid var(--petrol-dark);
  background: var(--sand);
  content: "";
  transform: translateX(-50%) rotate(45deg);
}

.diagram-flow b,
.diagram-flow span {
  display: block;
}

.diagram-flow span {
  margin-top: 6px;
  color: #526071;
  font-size: .78rem;
  line-height: 1.35;
}

.architecture-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.architecture-panel {
  padding: 34px;
  background: #fff;
}

.architecture-panel-wide {
  grid-column: 1 / -1;
  padding: 42px;
}

.architecture-panel-wide > p:last-child {
  max-width: 86ch;
}

.architecture-panel > p:last-child {
  margin-bottom: 0;
}

.mini-architecture {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  align-items: center;
  margin: 24px 0;
  padding: 20px;
  border: 1px solid var(--line);
  background: #f8fafb;
}

.mini-architecture div,
.delivery-evidence {
  padding: 12px;
  border: 1px solid #aeb8c5;
  background: #fff;
  text-align: center;
  font-size: .88rem;
  font-weight: 700;
}

.mini-architecture i {
  color: var(--petrol-dark);
  text-align: center;
  font-style: normal;
  font-weight: 800;
}

.mini-architecture .node-accent {
  border-color: var(--petrol-dark);
  background: #e9f3f2;
}

.mini-architecture .node-leaf {
  border-width: 2px;
  border-color: var(--navy);
}

.mini-architecture .node-wide {
  grid-column: 1 / -1;
  color: #fff;
  background: var(--navy);
}

.context-view {
  grid-template-columns: minmax(150px, 1fr) 48px minmax(190px, 1.2fr) 48px minmax(150px, 1fr);
}

.module-view {
  grid-template-columns: minmax(145px, .9fr) 48px minmax(190px, 1fr) 48px minmax(190px, 1fr);
  grid-template-rows: repeat(3, minmax(68px, auto)) auto;
}

.module-view .module-source {
  grid-column: 1;
  grid-row: 1 / 4;
  align-self: stretch;
}

.module-arrow-components { grid-column: 2; grid-row: 1; }
.module-components { grid-column: 3; grid-row: 1; }
.module-arrow-content { grid-column: 2; grid-row: 2; }
.module-content { grid-column: 3; grid-row: 2; }
.module-arrow-controller { grid-column: 2; grid-row: 3; }
.module-controller { grid-column: 3; grid-row: 3; }
.module-arrow-domain { grid-column: 4; grid-row: 3; }
.module-domain { grid-column: 5; grid-row: 3; }

.module-view .node-wide {
  grid-row: 4;
}

.module-view div:not(.node-wide),
.module-view i,
.context-view div:not(.node-wide),
.context-view i {
  min-height: 68px;
  display: grid;
  place-content: center;
}

.sequence-view {
  margin: 24px 0;
  border-left: 2px solid var(--petrol-dark);
}

.sequence-view li {
  display: grid;
  gap: 3px;
  padding: 12px 0 12px 22px;
  border-bottom: 1px solid var(--line);
}

.sequence-view span,
.delivery-view li,
.delivery-evidence {
  color: #526071;
  font-size: .88rem;
}

.delivery-view {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px;
  margin: 24px 0;
}

.delivery-view li {
  position: relative;
  display: grid;
  place-content: center;
  min-height: 76px;
  padding: 10px;
  border: 1px solid #aeb8c5;
  background: #f8fafb;
  text-align: center;
  font-weight: 700;
}

.delivery-view li:not(:last-child)::after {
  position: absolute;
  top: 50%;
  left: calc(100% + 8px);
  color: var(--petrol-dark);
  content: "→";
  transform: translateY(-50%);
}

.delivery-evidence {
  border-color: var(--petrol-dark);
  background: #e9f3f2;
}

.architecture-rules {
  border-top: 1px solid #ffffff2b;
}

.architecture-rules li {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid #ffffff2b;
}

.architecture-rules span {
  font-weight: 800;
}

.architecture-rules p {
  margin: 0;
}

.trace-chain {
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  gap: 30px;
}

.trace-chain li {
  position: relative;
  min-width: 94px;
  padding: 18px 14px;
  border: 2px solid var(--petrol-dark);
  background: #fff;
  text-align: center;
  font-weight: 800;
}

.trace-chain li:not(:last-child)::after {
  position: absolute;
  left: calc(100% + 8px);
  content: "→";
  color: var(--petrol-dark);
}

.bdd-card {
  display: grid;
  grid-template-columns: minmax(230px, .55fr) minmax(0, 1.45fr);
  gap: 42px;
  max-width: 980px;
  padding: 34px;
  border: 1px solid #cbd2da;
  background: #fff;
}

.bdd-card dl,
.bdd-card dd {
  margin: 0;
}

.bdd-card dl > div {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.bdd-card dt {
  color: var(--petrol-dark);
  font-weight: 800;
}

.test-layer-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 44px;
}

.softwaretest-case {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, .85fr);
  gap: 84px;
  color: #dce4ef;
  background: var(--navy);
}

.softwaretest-case h2,
.softwaretest-case .eyebrow {
  color: #fff;
}

.softwaretest-case .eyebrow {
  color: #86cbc8;
}

.status-list {
  border-top: 1px solid #ffffff2b;
}

.status-list li {
  padding: 20px 0;
  border-bottom: 1px solid #ffffff2b;
}

.status-list p {
  margin: 8px 0 0;
}

.status {
  display: inline-block;
  padding: 5px 9px;
  border: 1px solid currentColor;
  border-radius: 999px;
  background: transparent;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.status-positive {
  color: #9ee0ce;
}

.status-neutral {
  color: #f0cf91;
}

.release-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 30px;
  margin: 44px 0;
}

.release-flow li {
  position: relative;
  display: grid;
  align-content: start;
  min-height: 150px;
  padding: 22px;
  border: 1px solid var(--line);
}

.release-flow li:not(:last-child)::after {
  position: absolute;
  top: 50%;
  left: calc(100% + 9px);
  color: var(--petrol-dark);
  content: "→";
  font-weight: 800;
}

.release-flow b,
.release-flow small {
  display: block;
}

.release-flow b {
  margin-top: 18px;
}

.release-flow small {
  margin-top: 8px;
  color: #526071;
}

.evidence-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.evidence-grid strong,
.evidence-grid span {
  display: block;
}

.evidence-grid strong {
  color: var(--petrol-dark);
  font-family: Manrope, Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: 2.3rem;
}

.document-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.document-groups > section {
  padding: 30px;
  border: 1px solid var(--line);
}

.document-groups dl,
.document-groups dd {
  margin: 0;
}

.document-groups dl > div {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.document-groups dt {
  color: var(--navy);
  font-weight: 800;
}

.document-groups dd {
  margin-top: 5px;
  color: #526071;
}

.artifact-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.case-next {
  padding: 110px max(24px, calc((100vw - var(--max)) / 2));
  color: #fff;
  background: var(--navy);
  text-align: center;
}

.case-next h2 {
  max-width: 820px;
  margin-inline: auto;
  color: #fff;
}

.case-next > p:not(.eyebrow) {
  max-width: 700px;
  margin-inline: auto;
}

.case-next .eyebrow {
  color: #86cbc8;
}

.case-next .actions {
  justify-content: center;
}

@media (max-width: 1080px) {
  .case-lifecycle,
  .case-facts,
  .release-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .case-lifecycle li {
    min-height: 220px;
  }

  .case-facts div,
  .case-facts div:last-child {
    border-right: 1px solid #ffffff25;
  }

  .release-flow li::after {
    display: none;
  }

  .case-card-grid,
  .case-principles,
  .artifact-grid,
  .evidence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 850px) {
  .luna-teaser,
  .case-hero-image,
  .case-intro,
  .case-design-states,
  .traceability-section,
  .documentation-principle,
  .softwaretest-case {
    grid-template-columns: 1fr;
    gap: 45px;
  }

  .luna-site-header .button-small {
    display: inline-flex;
  }

  .luna-site-header {
    gap: 12px;
  }

  .case-subnav {
    top: 76px;
    justify-content: flex-start;
  }

  .architecture-grid,
  .test-layer-grid,
  .document-groups {
    grid-template-columns: 1fr;
  }

  .diagram-flow {
    min-width: 1260px;
  }

  .diagram-flow-wide {
    min-width: 1420px;
  }

  .diagram-flow li {
    width: 150px;
    flex-basis: 150px;
    padding: 16px;
  }

  .diagram-flow li:not(:last-child) {
    margin-right: 34px;
  }

  .diagram-flow .diagram-event {
    width: 120px;
    flex-basis: 120px;
  }

  .case-hero-compact {
    min-height: 430px;
  }
}

@media (max-width: 620px) {
  footer nav {
    width: 100%;
    flex-wrap: wrap;
    gap: .75rem 1.2rem;
  }

  .luna-site-header {
    gap: 8px;
    padding-inline: 14px;
  }

  .luna-site-header .language-switch a {
    padding-inline: .45rem;
    font-size: .74rem;
  }

  .luna-site-header .button-small {
    min-height: 40px;
    padding-inline: .65rem;
    font-size: .74rem;
  }

  .luna-teaser,
  .case-hero,
  .case-section,
  .case-facts,
  .softwaretest-case,
  .case-next {
    padding: 72px 20px;
  }

  .luna-proof-chain {
    padding: 18px 22px;
  }

  .luna-proof-chain li {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .luna-proof-chain small {
    grid-column: 2;
    text-align: left;
  }

  .case-card-grid,
  .case-card-grid-three,
  .case-principles,
  .case-facts,
  .case-lifecycle,
  .release-flow,
  .artifact-grid,
  .evidence-grid {
    grid-template-columns: 1fr;
  }

  .case-facts div {
    min-height: 135px;
    border-right: 0;
    border-bottom: 1px solid #ffffff25;
  }

  .case-facts div:last-child {
    border: 0;
  }

  .case-facts span,
  .case-principles h3 {
    min-height: 0;
  }

  .hero h1,
  .case-hero-copy h1 {
    font-size: clamp(2.25rem, 10vw, 2.85rem);
  }

  main h2 {
    font-size: clamp(1.75rem, 8vw, 2.35rem);
  }

  .bdd-card {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 24px;
  }

  .bdd-card dl > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .model-panel,
  .architecture-panel,
  .document-groups > section {
    padding: 24px;
  }

  .mini-architecture {
    grid-template-columns: 1fr;
  }

  .module-view {
    grid-template-rows: none;
  }

  .module-view > * {
    grid-column: auto;
    grid-row: auto;
  }

  .mini-architecture i {
    transform: rotate(90deg);
  }

  .delivery-view {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .delivery-view li::after {
    display: none;
  }

  .architecture-rules li {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@media (max-width: 620px) {
  .luna-site-header .button-small {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .case-subnav {
    scroll-behavior: auto;
  }
}