.atelier-transition {
  display: grid;
  align-content: end;
  min-height: min(68vh, 48rem);
  padding-block: var(--space-7) var(--space-5);
  border-bottom: 1px solid var(--rule);
}

.atelier-transition h1 {
  margin-bottom: var(--space-4);
}

.atelier-back-link {
  width: fit-content;
  margin-top: var(--space-4);
  font-family: var(--font-meta);
  font-size: var(--step--1);
}

.project-index {
  width: 100vw;
  max-width: none;
  height: 100dvh;
  max-height: none;
  margin: 0;
  padding: var(--space-5) var(--gutter);
  border: 0;
  background: var(--graphite-950);
  color: var(--paper-100);
}

.project-index::backdrop {
  background: color-mix(in oklch, var(--graphite-950) 70%, transparent);
}

.project-index-head {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid color-mix(in oklch, var(--paper-100) 28%, transparent);
  background: var(--graphite-950);
}

.project-index-head h2 {
  margin: 0;
}

.project-index .atelier-label {
  color: var(--concrete-300);
}

.project-index-close {
  min-width: 5rem;
  min-height: 2.75rem;
  border: 1px solid currentColor;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.project-index-groups {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-5) var(--space-4);
  padding-block: var(--space-5) var(--space-7);
}

.project-index-group {
  grid-column: span 6;
}

.project-index-group h3 {
  margin-bottom: var(--space-3);
  color: var(--arch-300);
  font-family: var(--font-meta);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-index-group ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.project-index-group li {
  border-top: 1px solid color-mix(in oklch, var(--paper-100) 20%, transparent);
}

.project-index-group a {
  display: grid;
  grid-template-columns: 2.25rem minmax(8rem, 0.7fr) 1fr auto;
  gap: var(--space-3);
  align-items: baseline;
  padding-block: var(--space-3);
  text-decoration: none;
}

.project-index-group a:hover strong,
.project-index-group a:focus-visible strong {
  color: var(--acid-500);
}

.project-index-group a > span:nth-of-type(2),
.project-index-group small {
  color: var(--concrete-300);
}

.project-index-number,
.project-index-group small {
  font-family: var(--font-meta);
  font-size: var(--step--1);
}

/* Technical Atelier / selected artifacts ----------------------------------- */
.home-view {
  max-width: 92rem;
  margin-inline: auto;
}

.home-opening {
  display: grid;
  grid-template-columns: minmax(18rem, 0.82fr) minmax(34rem, 1.45fr);
  gap: clamp(2rem, 5vw, 6.5rem);
  align-items: start;
  min-height: 0;
  padding-block: clamp(1.5rem, 3vw, 3rem) clamp(2rem, 4.5vw, 4.5rem);
  border-bottom: 1px solid var(--rule);
}

.home-identity {
  align-self: start;
  max-width: 34rem;
  padding-top: 0;
}

.home-identity h1 {
  margin-block: var(--space-3) var(--space-4);
}

.home-intro,
.home-reading {
  max-width: 45ch;
}

.home-intro {
  color: var(--ink-muted);
  font-size: var(--step-1);
}

.home-reading {
  margin-bottom: var(--space-4);
  padding-left: var(--space-3);
  border-left: 3px solid var(--arch-500);
  font-family: var(--font-meta);
  font-size: var(--step--1);
}

.home-primary-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-family: var(--font-meta);
  font-size: var(--step--1);
}

.home-primary-links a {
  min-height: 2.75rem;
  padding: 0.8rem 0;
  text-decoration: none;
}

.home-primary-links a:last-child {
  color: var(--ink-muted);
}

.home-opening-artifact {
  width: 100%;
  max-width: none;
}

.artifact {
  position: relative;
  display: grid;
  gap: var(--space-4);
  min-width: 0;
  padding: clamp(1.2rem, 2.5vw, 2.5rem);
  border: 1px solid var(--rule);
  background: var(--surface-raised);
}

.artifact::before {
  position: absolute;
  top: 0;
  left: 0;
  width: 3.5rem;
  height: 3px;
  background: var(--arch-500);
  content: '';
}

.artifact-header {
  max-width: 44rem;
}

.artifact-header .atelier-label {
  margin-bottom: var(--space-2);
}

.artifact-header h2 {
  margin-bottom: var(--space-2);
}

.artifact-header h2 a {
  text-decoration: none;
}

.artifact-header h2 a:hover {
  text-decoration: underline;
  text-decoration-color: var(--arch-500);
}

.artifact-summary {
  max-width: 62ch;
  margin-bottom: 0;
  color: var(--ink-muted);
}

.artifact-media {
  margin: 0;
  border: 1px solid color-mix(in oklch, var(--ink) 16%, transparent);
  background: var(--graphite-900);
}

.artifact-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.artifact-media figcaption {
  padding: var(--space-2) var(--space-3);
  color: var(--concrete-300);
  font-family: var(--font-meta);
  font-size: var(--step--1);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.home-opening-artifact .artifact-media {
  height: auto;
  aspect-ratio: 16 / 9;
  max-height: 27rem;
  overflow: hidden;
  box-shadow: 1rem 1rem 0 color-mix(in oklch, var(--olive-500) 18%, transparent);
}

.home-opening-artifact .artifact-media img {
  height: 100%;
  aspect-ratio: auto;
  object-fit: contain; object-position: center;
}

.artifact-context {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(9rem, 0.44fr);
  gap: var(--space-4);
  align-items: start;
  padding-top: var(--space-3);
  border-top: 1px solid var(--rule);
}

.artifact-annotation {
  display: grid;
  grid-template-columns: 1.8rem minmax(0, 1fr);
  gap: var(--space-2);
}

.artifact-annotation > span {
  display: grid;
  width: 1.8rem;
  height: 1.8rem;
  place-items: center;
  background: var(--graphite-950);
  color: var(--paper-100);
  font-family: var(--font-meta);
  font-size: var(--step--1);
}

.artifact-annotation p,
.metric-annotation,
.evidence-label {
  margin: 0;
}

.metric-annotation {
  display: grid;
  gap: 0.1rem;
  padding-left: var(--space-3);
  border-left: 1px solid var(--rule);
}

.metric-annotation strong {
  font-family: var(--font-display);
  font-size: var(--step-2);
  line-height: 1;
}

.metric-annotation span,
.metric-annotation small,
.evidence-label small {
  color: var(--ink-muted);
  font-size: var(--step--1);
}

.metric-annotation small {
  margin-top: var(--space-1);
}

.evidence-label {
  display: grid;
  gap: var(--space-1);
  grid-column: 1 / -1;
  padding: var(--space-3);
  border-top: 1px solid var(--rule);
  background: color-mix(in oklch, var(--paper-100) 72%, var(--concrete-300));
  font-family: var(--font-meta);
  font-size: var(--step--1);
  line-height: 1.45;
}

.evidence-label span {
  color: var(--olive-500);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.home-featured {
  padding-block: clamp(4rem, 10vw, 11rem);
}

.home-featured-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(16rem, 0.3fr);
  gap: var(--space-4);
  align-items: end;
  margin-bottom: clamp(2.5rem, 5vw, 5rem);
}

.home-featured-heading h2 {
  grid-column: 1;
  margin-block: var(--space-2) 0;
}

.home-featured-heading > p:last-child {
  margin: 0;
  color: var(--ink-muted);
}

.home-artifact-sequence {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1rem, 2.6vw, 3rem);
  align-items: start;
}

.home-artifact-sequence .artifact--systems {
  grid-column: span 7;
  margin-top: 0;
}

.home-artifact-sequence .artifact--experiment {
  grid-column: span 5;
  margin-top: clamp(2rem, 9vw, 9rem);
  background: color-mix(in oklch, var(--paper-100) 90%, var(--olive-300));
}

.home-artifact-sequence .artifact--physical {
  min-height: 0;
  grid-column: 2 / span 8;
  margin-top: clamp(1rem, 3vw, 4rem);
}

/* The retained GMK render is a 354 x 90 source. Keep it as a provenance-
   carrying specimen strip rather than scaling it into a soft hero photograph. */
.home-artifact-sequence .artifact--gmk-arch {
  grid-column: 3 / span 7;
  background: color-mix(in oklch, var(--paper-100) 88%, var(--arch-300));
}

.artifact--gmk-arch .artifact-media {
  display: grid;
  min-height: clamp(8rem, 13vw, 12rem);
  place-items: center;
  padding: clamp(1rem, 2vw, 2rem);
  background:
    linear-gradient(90deg, transparent 0 49.9%, color-mix(in oklch, var(--ink) 10%, transparent) 50%, transparent 50.1%),
    var(--graphite-950);
}

.artifact--gmk-arch .artifact-media img {
  width: min(100%, 22.125rem);
  height: auto;
  aspect-ratio: 354 / 90;
  object-fit: contain;
}

.systems-diagram,
.experiment-sheet {
  border: 1px solid var(--rule);
  background:
    linear-gradient(90deg, transparent 0 49.88%, color-mix(in oklch, var(--ink) 7%, transparent) 50%, transparent 50.12%),
    var(--paper-200);
}

.systems-diagram {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  align-items: center;
  min-height: 12rem;
  padding: var(--space-3);
}

.systems-node {
  display: grid;
  min-height: 7rem;
  align-content: space-between;
  gap: var(--space-2);
  padding: var(--space-3);
  border: 1px solid color-mix(in oklch, var(--ink) 22%, transparent);
  background: var(--surface-raised);
}

.systems-node span,
.experiment-row > span {
  color: var(--arch-500);
  font-family: var(--font-meta);
  font-size: var(--step--1);
}

.systems-route {
  color: var(--olive-500);
  font-family: var(--font-meta);
  text-align: center;
}

.artifact-text-summary {
  margin: 0;
  color: var(--ink-muted);
  font-size: var(--step--1);
}

.experiment-sheet {
  display: grid;
}

.experiment-row {
  display: grid;
  grid-template-columns: 2.5rem minmax(8rem, 0.8fr) minmax(0, 1.5fr);
  gap: var(--space-2);
  align-items: baseline;
  padding: var(--space-3);
  border-bottom: 1px solid var(--rule);
}

.experiment-row:last-child {
  border-bottom: 0;
}

.experiment-row p {
  margin: 0;
  color: var(--ink-muted);
}

.home-view--product .artifact::before,
.home-view--product .home-reading {
  background-color: var(--olive-500);
  border-color: var(--olive-500);
}

.home-view--product .home-artifact-sequence .artifact--experiment {
  background: color-mix(in oklch, var(--paper-100) 89%, var(--arch-300));
}