.page-about {
  --rail-w: 15rem;
  --about-gap: clamp(1.5rem, 3.5vw, 3rem);
  --sec-pad: clamp(2rem, 4.5vw, 3.5rem);
  background: var(--ink-900);
  color: var(--bone);
  overflow-x: clip;
}

.page-about [id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-about .about-crumb-row {
  padding-top: 1.1rem;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  border-bottom: var(--edge);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(37, 42, 92, .55), transparent 58%),
    linear-gradient(180deg, rgba(12, 42, 34, .92), rgba(6, 23, 19, .99)),
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(244, 241, 230, .055) 79px 80px),
    repeating-linear-gradient(0deg, transparent 0 79px, rgba(244, 241, 230, .055) 79px 80px);
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(2rem, 5vw, 4rem) clamp(2.25rem, 5vw, 4rem);
}

.page-about .hero-copy h1 {
  margin: .6rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.4vw, 3.6rem);
  line-height: 1.16;
  letter-spacing: -.01em;
}

.page-about .hero-copy .lede {
  max-width: 46ch;
  color: var(--bone-78);
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.8;
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.6rem;
}

.page-about .hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .5rem;
  margin-top: 1.9rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--bone-16);
}

.page-about .hero-facts dt {
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-about .hero-facts dd {
  margin: .3rem 0 0;
  font-size: 1.15rem;
  color: var(--lime);
}

.page-about .hero-visual {
  position: relative;
  margin: 0;
  border: var(--edge);
  box-shadow: var(--shadow-hard);
  background: var(--ink-800);
}

.page-about .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(.85) contrast(1.06);
}

.page-about .hero-visual .media-caption {
  padding: .6rem .8rem;
  font-size: .75rem;
  color: var(--bone-60);
  border-top: 1px solid var(--bone-16);
  background: rgba(6, 23, 19, .82);
}

/* ---------- Body layout ---------- */
.page-about .about-body {
  display: grid;
  gap: var(--about-gap);
  padding-block: clamp(2rem, 5vw, 3.5rem) clamp(3rem, 6vw, 5rem);
}

.page-about .about-content {
  min-width: 0;
}

/* ---------- Rail ---------- */
.page-about .about-rail {
  border: var(--edge);
  background: rgba(12, 42, 34, .55);
  padding: 1rem;
}

.page-about .rail-head {
  margin: 0 0 .7rem;
  font-family: var(--font-kicker);
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .2rem;
}

.page-about .rail-list a {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding: .42rem .5rem;
  color: var(--bone-78);
  font-size: .86rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-about .rail-list a:hover,
.page-about .rail-list a:focus-visible {
  color: var(--lime);
  border-left-color: var(--lime);
  background: var(--lime-10);
}

.page-about .rail-idx {
  font-size: .72rem;
  color: var(--sand);
}

.page-about .rail-years {
  display: flex;
  justify-content: space-between;
  gap: .3rem;
  margin-top: 1rem;
  padding-top: .8rem;
  border-top: 1px dashed var(--bone-16);
  font-size: .68rem;
  color: var(--mist);
}

/* ---------- Sections ---------- */
.page-about .about-section {
  padding-block: var(--sec-pad);
  border-top: 1px solid var(--bone-16);
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-section h2 {
  position: relative;
  margin: 0 0 1rem;
  padding-left: 2.9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 2.15rem);
  line-height: 1.3;
}

.page-about .about-section h2::before {
  content: attr(data-sec);
  position: absolute;
  left: 0;
  top: .1em;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--lime);
  border: 1px solid var(--lime-28);
  padding: .18rem .3rem;
}

.page-about .about-section p,
.page-about .about-timeline-wrap p {
  color: var(--bone-78);
  line-height: 1.85;
  max-width: 68ch;
}

.page-about .section-lede {
  margin-bottom: 1.4rem;
  color: var(--bone-60);
}

/* ---------- Quote ---------- */
.page-about .about-quote {
  margin: 1.6rem 0;
  padding: 1.1rem 1.2rem 1.1rem 1.4rem;
  border-left: 4px solid var(--lime);
  background: linear-gradient(100deg, rgba(91, 32, 51, .42), rgba(12, 42, 34, .5));
}

.page-about .about-quote p {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  line-height: 1.6;
  color: var(--bone);
  max-width: 40ch;
}

.page-about .about-quote cite {
  display: block;
  margin-top: .6rem;
  font-style: normal;
  font-size: .76rem;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- Three layers ---------- */
.page-about .layer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}

.page-about .layer-item {
  display: grid;
  grid-template-columns: 3.2rem minmax(0, 1fr);
  gap: .9rem;
  align-items: start;
  padding: 1rem 1.1rem;
  border: 2px solid var(--bone-16);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-about .layer-item--sand {
  border-left: 6px solid var(--sand);
}

.page-about .layer-item--lime {
  border-left: 6px solid var(--lime);
  background: linear-gradient(120deg, rgba(200, 255, 61, .07), var(--ink-800) 55%);
}

.page-about .layer-item--indigo {
  border-left: 6px solid var(--indigo);
  background: linear-gradient(120deg, rgba(37, 42, 92, .5), var(--ink-800) 60%);
}

.page-about .layer-no {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--bone-60);
}

.page-about .layer-item h3 {
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--bone);
}

.page-about .layer-item p {
  margin: 0;
  font-size: .93rem;
  color: var(--bone-78);
  line-height: 1.8;
}

.page-about .layer-foot {
  margin-top: 1.3rem;
  padding: .9rem 1rem;
  font-size: .9rem;
  color: var(--bone-78);
  border: 1px dashed var(--lime-28);
  background: var(--lime-10);
}

.page-about .layer-foot a {
  color: var(--lime);
  text-underline-offset: 3px;
}

/* ---------- Stats ---------- */
.page-about .stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .7rem;
}

.page-about .stat {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1rem .9rem 1.1rem;
  border: 2px solid var(--lime-28);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-about .stat-num {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 600;
  line-height: 1.05;
  color: var(--lime);
}

.page-about .stat-label {
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--bone-60);
}

.page-about .scale-notes {
  display: grid;
  gap: .7rem;
  margin-top: 1.1rem;
}

.page-about .scale-note {
  padding: 1rem 1.1rem;
  border: 1px solid var(--bone-16);
  border-top: 3px solid var(--mist);
  background: rgba(12, 42, 34, .6);
}

.page-about .scale-note--wine {
  border-top-color: var(--wine);
}

.page-about .scale-note--moss {
  border-top-color: var(--moss);
}

.page-about .scale-note h3 {
  margin: 0 0 .4rem;
  font-size: .95rem;
  letter-spacing: .02em;
  color: var(--bone);
}

.page-about .scale-note p {
  margin: 0;
  font-size: .89rem;
  line-height: 1.8;
  color: var(--bone-60);
}

/* ---------- Version split ---------- */
.page-about .about-section--split {
  display: grid;
  gap: 1.4rem;
}

.page-about .split-media {
  border: var(--edge);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .split-media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  filter: saturate(.8) contrast(1.08);
}

.page-about .split-copy h2 {
  padding-left: 2.9rem;
}

.page-about .check-card {
  margin-top: 1.2rem;
  padding: 1rem 1.1rem;
  border: 2px solid var(--bone-16);
  border-left: 5px solid var(--sand);
  background: var(--ink-800);
}

.page-about .check-head {
  margin: 0 0 .5rem;
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--sand);
}

.page-about .check-card p {
  margin: 0 0 .5rem;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--bone-78);
}

.page-about .check-stat {
  margin: .2rem 0 0 !important;
  padding-top: .6rem;
  border-top: 1px dashed var(--bone-16);
  font-size: .85rem;
  color: var(--bone-60) !important;
}

.page-about .check-stat .mono {
  color: var(--lime);
  font-size: 1.1rem;
  margin-right: .35rem;
}

/* ---------- Timeline ---------- */
.page-about .about-timeline-wrap {
  padding-block: var(--sec-pad);
  border-top: 1px solid var(--bone-16);
}

.page-about .tl-heading {
  margin: 0 0 1.2rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  color: var(--bone);
}

.page-about .timeline {
  display: grid;
  gap: .5rem;
  border-left: 2px solid var(--bone-16);
  padding-left: 1rem;
}

.page-about .tl-item {
  position: relative;
  border: 1px solid var(--bone-16);
  background: rgba(12, 42, 34, .55);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -1.42rem;
  top: 1.05rem;
  width: .6rem;
  height: .6rem;
  background: var(--ink-900);
  border: 2px solid var(--mist);
  transform: rotate(45deg);
}

.page-about .tl-item[open]::before {
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .tl-item summary {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .85rem 1rem;
  cursor: pointer;
  list-style: none;
}

.page-about .tl-item summary::-webkit-details-marker {
  display: none;
}

.page-about .tl-item summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-about .tl-year {
  font-size: 1.05rem;
  color: var(--lime);
  letter-spacing: .04em;
}

.page-about .tl-label {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--bone);
}

.page-about .tl-item p {
  margin: 0;
  padding: 0 1rem .95rem 1rem;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--bone-78);
}

/* ---------- Team tabs ---------- */
.page-about .about-tabs {
  margin-top: 1.2rem;
}

.page-about .about-tabs .tablist {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}

.page-about .about-tabs .tab {
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  padding: .55rem .85rem;
  font-family: var(--font-kicker);
  font-size: .9rem;
  letter-spacing: .05em;
  color: var(--bone-78);
  background: transparent;
  border: 2px solid var(--bone-16);
  cursor: pointer;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}

.page-about .about-tabs .tab:hover {
  color: var(--lime);
  border-color: var(--lime-28);
}

.page-about .about-tabs .tab[aria-selected="true"] {
  color: var(--ink-900);
  background: var(--lime);
  border-color: var(--lime);
}

.page-about .about-tabs .tab:focus-visible {
  outline: 2px solid var(--bone);
  outline-offset: 2px;
}

.page-about .about-tabs .tab-num {
  font-size: .78rem;
  opacity: .85;
}

.page-about .about-tabs .tabpanel {
  margin-top: .8rem;
  padding: 1rem 1.1rem;
  border: 2px solid var(--bone-16);
  border-top: 3px solid var(--lime);
  background: var(--ink-800);
}

.page-about .about-tabs .tabpanel[hidden] {
  display: none;
}

.page-about .about-tabs .tabpanel h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--bone);
}

.page-about .about-tabs .tabpanel p {
  margin: 0 0 .55rem;
  font-size: .9rem;
  line-height: 1.82;
  color: var(--bone-78);
}

.page-about .about-tabs .tabpanel p:last-child {
  margin-bottom: 0;
}

.page-about .network-block {
  margin-top: 1.3rem;
  display: grid;
  gap: 0;
  border: var(--edge);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-about .network-block img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.7) contrast(1.1);
}

.page-about .network-copy {
  padding: 1.1rem 1.15rem;
}

.page-about .network-copy h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--bone);
}

.page-about .network-copy p {
  margin: 0 0 .6rem;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--bone-78);
}

.page-about .text-link {
  display: inline-block;
  margin-top: .2rem;
  font-size: .86rem;
  letter-spacing: .04em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 2px solid var(--lime-28);
  padding-bottom: 2px;
}

.page-about .text-link:hover {
  border-bottom-color: var(--lime);
}

/* ---------- Why ---------- */
.page-about .about-section--final {
  border-top: 2px solid var(--lime-28);
}

.page-about .why-list {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-about .why-list li {
  padding: .95rem 1rem;
  border: 1px solid var(--bone-16);
  border-left: 4px solid var(--sand);
  background: rgba(12, 42, 34, .55);
}

.page-about .why-list li:nth-child(2) {
  border-left-color: var(--lime);
}

.page-about .why-list li:nth-child(3) {
  border-left-color: var(--indigo);
}

.page-about .why-list li:nth-child(4) {
  border-left-color: var(--wine);
}

.page-about .why-list h3 {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--bone);
}

.page-about .why-list p {
  margin: 0;
  font-size: .89rem;
  line-height: 1.8;
  color: var(--bone-78);
}

.page-about .final-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.4rem;
}

/* ---------- Responsive ---------- */
@media (min-width: 40rem) {
  .page-about .stat-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .scale-note:last-child {
    grid-column: 1 / -1;
  }

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

  .page-about .network-block {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: stretch;
  }

  .page-about .network-block img {
    height: 100%;
    aspect-ratio: auto;
  }
}

@media (min-width: 58rem) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: center;
  }

  .page-about .layer-item {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    padding: 1.15rem 1.35rem;
  }

  .page-about .layer-no {
    font-size: 2rem;
  }

  .page-about .about-section--split {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
    gap: 2rem;
  }
}

@media (min-width: 62rem) {
  .page-about .about-body {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .rail-list a,
  .page-about .about-tabs .tab {
    transition: none;
  }
}
<<<END>>>