.page-about {
  --about-gap: clamp(2rem, 4.5vw, 3.5rem);
  --about-pad: clamp(2.5rem, 5vw, 4.5rem);
  background: var(--mist);
  color: var(--ink);
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  background: var(--navy);
  color: var(--mist);
  padding: clamp(1.75rem, 4vw, 2.75rem) 0 clamp(2.5rem, 5vw, 4rem);
  border-bottom: 3px solid var(--maple);
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  background: var(--maple);
  opacity: .07;
  clip-path: var(--leaf);
  pointer-events: none;
}

.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  margin: 0 0 clamp(1.5rem, 3vw, 2.25rem);
  padding: 0;
  list-style: none;
  font-size: var(--fs-note);
  font-family: var(--font-mono);
}

.page-about .breadcrumb li {
  display: flex;
  align-items: center;
  color: rgba(248, 250, 252, .6);
}

.page-about .breadcrumb li + li::before {
  content: "/";
  margin: 0 .55rem;
  color: rgba(248, 250, 252, .3);
}

.page-about .breadcrumb a {
  color: rgba(248, 250, 252, .78);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease, color .15s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-about .breadcrumb li[aria-current="page"] {
  color: var(--gold);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  position: relative;
  z-index: 1;
}

.page-about .about-hero-lede .eyebrow {
  color: var(--gold);
  letter-spacing: .18em;
  text-transform: uppercase;
  margin: 0 0 .85rem;
}

.page-about .about-hero-lede .t-display {
  color: var(--mist);
  margin: 0 0 1.15rem;
  letter-spacing: -.02em;
}

.page-about .about-hero-lede .lede {
  color: rgba(248, 250, 252, .82);
  max-width: 46rem;
  margin: 0;
  line-height: 1.75;
}

.page-about .about-facts {
  border: 2px solid rgba(248, 250, 252, .22);
  background: rgba(6, 18, 38, .45);
  padding: 1rem 1.15rem 1.15rem;
}

.page-about .about-facts-label {
  margin: 0 0 .85rem;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--slate);
}

.page-about .about-facts ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: .7rem 0;
  border-bottom: 1px solid rgba(248, 250, 252, .12);
}

.page-about .about-facts li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-fact-val {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: -.01em;
}

.page-about .about-fact-key {
  font-size: var(--fs-note);
  color: rgba(248, 250, 252, .66);
  text-align: right;
}

/* ---------- Body grid + index ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  padding-top: clamp(2.25rem, 5vw, 3.5rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}

.page-about .about-index {
  border-top: 3px solid var(--maple);
  padding-top: 1rem;
}

.page-about .about-index-label {
  margin: 0 0 .85rem;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--slate);
}

.page-about .about-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 .35rem;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index-list li {
  flex: 0 0 auto;
}

.page-about .about-index-list a {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .75rem;
  border: 2px solid var(--navy);
  background: var(--mist);
  color: var(--navy);
  text-decoration: none;
  font-size: var(--fs-note);
  white-space: nowrap;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.page-about .about-index-list a .mono {
  color: var(--maple);
  font-size: 11px;
}

.page-about .about-index-list a:hover {
  background: var(--maple);
  border-color: var(--maple);
  color: var(--mist);
}

.page-about .about-index-list a:hover .mono {
  color: var(--mist);
}

/* ---------- Chapters ---------- */
.page-about .about-chapter {
  position: relative;
  padding: clamp(1.75rem, 4vw, 2.75rem) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-chapter:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-chapter--full {
  margin-inline: calc(var(--about-gap) * -0.5);
  padding-inline: calc(var(--about-gap) * 0.5);
  background: var(--grey);
  border-bottom: 0;
  border-top: 3px solid var(--navy);
}

.page-about .chapter-note {
  display: none;
}

.page-about .chapter-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .2rem 1rem;
  align-items: center;
  margin-bottom: 1.15rem;
}

.page-about .chapter-num {
  font-size: clamp(1.75rem, 3.4vw, 2.35rem);
  font-weight: 700;
  line-height: 1;
  color: var(--maple);
  letter-spacing: -.02em;
}

.page-about .chapter-head h2 {
  margin: 0;
  color: var(--navy);
}

.page-about .about-chapter > .t-body {
  margin: 0 0 1.5rem;
  max-width: 60ch;
  color: var(--ink);
}

/* ---------- Pair tiles ---------- */
.page-about .about-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-tile {
  border: 2px solid var(--navy);
  background: var(--mist);
  padding: 1.15rem 1.25rem 1.35rem;
  box-shadow: 6px 6px 0 var(--maple-soft);
  transition: transform .18s ease, box-shadow .18s ease;
}

.page-about .about-tile:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--maple-soft);
}

.page-about .about-tile-tag {
  margin: 0 0 .6rem;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--maple);
}

.page-about .about-tile h3 {
  margin: 0 0 .6rem;
  color: var(--navy);
}

.page-about .about-tile p {
  margin: 0;
  line-height: 1.75;
}

/* ---------- Team ---------- */
.page-about .about-team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.75rem;
}

.page-about .about-team-copy p + p {
  margin-top: 1rem;
}

.page-about .about-team-copy .t-body {
  margin: 0;
  line-height: 1.8;
}

.page-about .about-team-figure {
  margin: 0;
  border: 2px solid var(--navy);
  background: var(--mist);
  padding: .75rem;
  box-shadow: 8px 8px 0 var(--navy);
}

.page-about .about-team-figure .figure-media {
  background: var(--grey);
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.page-about .about-team-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-team-figure .figure-caption {
  margin-top: .65rem;
  font-size: var(--fs-note);
  color: var(--slate);
  line-height: 1.6;
}

.page-about .about-team-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
}

.page-about .team-card {
  border: 2px solid var(--navy);
  background: var(--mist);
}

.page-about .team-card summary {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding: .95rem 1.1rem;
  cursor: pointer;
  list-style: none;
  transition: background .15s ease;
}

.page-about .team-card summary::-webkit-details-marker {
  display: none;
}

.page-about .team-card summary:hover {
  background: var(--maple-soft);
}

.page-about .team-card[open] summary {
  background: var(--navy);
  color: var(--mist);
}

.page-about .team-count {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--maple);
  line-height: 1;
  min-width: 3.5rem;
}

.page-about .team-card[open] .team-count {
  color: var(--gold);
}

.page-about .team-role {
  flex: 1;
  font-weight: 600;
  font-size: 1.0625rem;
}

.page-about .team-hint {
  font-size: var(--fs-note);
  font-family: var(--font-mono);
  letter-spacing: .12em;
  color: var(--slate);
}

.page-about .team-card[open] .team-hint {
  color: var(--gold);
}

.page-about .team-detail {
  padding: 1rem 1.1rem 1.25rem;
  border-top: 1px solid var(--line);
}

.page-about .team-detail p {
  margin: 0;
  line-height: 1.8;
}

/* ---------- Versions timeline ---------- */
.page-about .about-version-figure {
  margin: 1.5rem 0 1.75rem;
  border: 2px solid var(--navy);
  background: var(--mist);
  padding: .75rem;
  box-shadow: 8px 8px 0 var(--navy-deep);
}

.page-about .about-version-figure .figure-media {
  background: var(--navy);
  aspect-ratio: 1200 / 420;
  overflow: hidden;
}

.page-about .about-version-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-version-figure .figure-caption {
  margin-top: .65rem;
  font-size: var(--fs-note);
  color: var(--slate);
  line-height: 1.6;
}

.page-about .about-rail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .rail-stop {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  border-left: 3px solid var(--navy);
  padding-left: 1rem;
  transition: border-color .18s ease;
}

.page-about .rail-stop:hover {
  border-left-color: var(--maple);
}

.page-about .rail-stop--current {
  border-left-color: var(--maple);
}

.page-about .rail-year {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  letter-spacing: -.01em;
}

.page-about .rail-stop--current .rail-year {
  color: var(--maple);
}

.page-about .rail-card {
  border: 2px solid var(--navy);
  background: var(--mist);
  padding: .95rem 1.1rem 1.15rem;
  transition: transform .18s ease, box-shadow .18s ease;
}

.page-about .rail-stop:hover .rail-card {
  transform: translateY(-2px);
  box-shadow: 6px 6px 0 var(--maple-soft);
}

.page-about .rail-card h3 {
  margin: 0 0 .5rem;
  color: var(--navy);
}

.page-about .rail-card p {
  margin: 0;
  line-height: 1.75;
}

/* ---------- Stats & rhythm ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin-bottom: 1.75rem;
}

.page-about .about-stat {
  border: 2px solid var(--navy);
  background: var(--mist);
  padding: 1rem 1.1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.page-about .about-stat .stat-value {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--navy);
  line-height: 1.1;
}

.page-about .about-stat.stat--maple {
  border-color: var(--maple);
  background: var(--maple-soft);
}

.page-about .about-stat.stat--maple .stat-value {
  color: var(--maple);
}

.page-about .about-stat.stat--teal .stat-value {
  color: var(--teal);
}

.page-about .about-stat.stat--gold {
  border-color: var(--gold);
}

.page-about .about-stat.stat--gold .stat-value {
  color: var(--navy);
}

.page-about .about-stat .stat-label {
  font-size: var(--fs-note);
  color: var(--slate);
}

.page-about .about-rhythm {
  border-top: 1px solid var(--line-strong);
  padding-top: 1.35rem;
}

.page-about .about-rhythm h3 {
  margin: 0 0 .85rem;
  color: var(--navy);
}

.page-about .about-rhythm p {
  margin: 0 0 .9rem;
  line-height: 1.8;
  max-width: 62ch;
}

.page-about .about-inline-link {
  border-left: 3px solid var(--gold);
  padding: .15rem 0 .15rem .9rem;
  color: var(--slate);
}

.page-about .about-inline-link a {
  color: var(--maple);
  text-decoration: none;
  border-bottom: 1px solid var(--maple);
  font-weight: 600;
}

.page-about .about-inline-link a:hover {
  color: var(--navy);
  border-bottom-color: var(--navy);
}

/* ---------- Partners ---------- */
.page-about .about-partner-figure {
  margin: 1.35rem 0 1.5rem;
  border: 2px solid var(--navy);
  background: var(--mist);
  padding: .75rem;
  box-shadow: 8px 8px 0 var(--teal);
}

.page-about .about-partner-figure .figure-media {
  background: var(--grey);
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.page-about .about-partner-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-about .about-partner-figure .figure-caption {
  margin-top: .65rem;
  font-size: var(--fs-note);
  color: var(--slate);
  line-height: 1.6;
}

.page-about .about-partner-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
  margin-bottom: 1.75rem;
}

.page-about .partner-card {
  border: 2px solid var(--navy);
  background: var(--mist);
  border-left-width: 6px;
  border-left-color: var(--teal);
  transition: border-left-color .18s ease, transform .18s ease;
}

.page-about .partner-card:hover,
.page-about .partner-card[open] {
  border-left-color: var(--maple);
}

.page-about .partner-card summary {
  display: flex;
  align-items: center;
  gap: .85rem;
  padding: .9rem 1.1rem;
  cursor: pointer;
  list-style: none;
}

.page-about .partner-card summary::-webkit-details-marker {
  display: none;
}

.page-about .partner-tag {
  font-size: var(--fs-mono);
  font-weight: 700;
  color: var(--maple);
  letter-spacing: .08em;
}

.page-about .partner-name {
  flex: 1;
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--navy);
}

.page-about .partner-detail {
  padding: .25rem 1.1rem 1.2rem 2.9rem;
}

.page-about .partner-detail p {
  margin: 0;
  line-height: 1.8;
}

.page-about .about-awards {
  border: 2px solid var(--gold);
  background: var(--mist);
  padding: 1.15rem 1.25rem 1.35rem;
}

.page-about .about-awards-lead {
  margin: 0 0 .7rem;
  font-size: var(--fs-mono);
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--navy);
}

.page-about .about-awards p:last-child {
  margin: 0;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- Contact ---------- */
.page-about .about-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: .75rem;
  margin-bottom: 1.15rem;
}

.page-about .about-contact-item {
  border: 2px solid var(--navy);
  background: var(--mist);
  padding: .95rem 1.1rem 1.05rem;
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.page-about .about-contact-item .contact-key {
  font-size: var(--fs-note);
  color: var(--slate);
  letter-spacing: .06em;
}

.page-about .about-contact-item .contact-val {
  color: var(--navy);
  font-weight: 600;
  word-break: break-word;
}

.page-about .about-contact-note {
  margin: 0 0 1.35rem;
  font-size: var(--fs-note);
  color: var(--slate);
  line-height: 1.75;
  border-left: 3px solid var(--line-strong);
  padding-left: .9rem;
  max-width: 58ch;
}

.page-about .about-cta-row {
  margin: 0;
}

/* ---------- Responsive ---------- */
@media (min-width: 640px) {
  .page-about .about-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-about .about-contact-item--wide {
    grid-column: 1 / -1;
  }

  .page-about .about-partner-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-team-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .team-card summary {
    flex-direction: column;
    align-items: flex-start;
    gap: .45rem;
  }

  .page-about .team-role {
    flex: none;
  }

  .page-about .team-hint {
    letter-spacing: .1em;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(250px, .8fr);
    align-items: end;
  }

  .page-about .about-team-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .about-rail {
    gap: 1.25rem;
  }

  .page-about .rail-stop {
    grid-template-columns: 5.5rem 1fr;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: minmax(0, 1fr) 232px;
    grid-template-areas: "flow index";
    align-items: start;
  }

  .page-about .about-index {
    grid-area: index;
    position: sticky;
    top: 1.5rem;
    border-top-width: 3px;
  }

  .page-about .about-flow {
    grid-area: flow;
    min-width: 0;
  }

  .page-about .about-index-list {
    flex-direction: column;
    gap: .1rem;
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-about .about-index-list li {
    flex: none;
  }

  .page-about .about-index-list a {
    white-space: normal;
    border: 0;
    border-left: 2px solid var(--line);
    background: transparent;
    padding: .55rem .8rem;
    align-items: flex-start;
  }

  .page-about .about-index-list a:hover {
    background: var(--maple-soft);
    border-left-color: var(--maple);
    color: var(--navy);
  }

  .page-about .about-index-list a:hover .mono {
    color: var(--maple);
  }
}

@media (min-width: 1160px) {
  .page-about .chapter-note {
    display: block;
    position: absolute;
    right: 0;
    top: clamp(1.75rem, 4vw, 2.75rem);
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .34em;
    color: var(--slate);
    opacity: .7;
    pointer-events: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tile,
  .page-about .rail-card,
  .page-about .about-index-list a,
  .page-about .team-card summary,
  .page-about .partner-card {
    transition: none;
  }

  .page-about .about-tile:hover,
  .page-about .rail-stop:hover .rail-card {
    transform: none;
  }
}
</main>