.page-about {
  --ab-index-w: 236px;
  --ab-gap: clamp(24px, 4vw, 56px);
  background: var(--ink-900);
  color: var(--ice);
  overflow-x: hidden;
}

.page-about .ab-mono-num {
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--ice);
}

.page-about .ab-mono-num--lime {
  color: var(--lime);
}

.page-about .ab-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
  text-transform: uppercase;
  margin: 0 0 18px;
}

.page-about .ab-kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--lime);
  border-radius: 50%;
  flex: none;
}

.page-about .ab-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 92% 0%, rgba(30, 107, 255, 0.16), transparent 62%),
    var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(42, 51, 70, 0.45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 51, 70, 0.45) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.5;
  pointer-events: none;
}

.page-about .ab-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 clamp(22px, 4vw, 40px);
  padding: 0;
  font-size: 13px;
  color: var(--slate);
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-about .breadcrumbs a {
  color: var(--slate);
  text-decoration: none;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--lime);
}

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--ice);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
}

.page-about .ab-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.4vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.02em;
  margin: 0 0 clamp(18px, 3vw, 26px);
  color: var(--ice);
}

.page-about .ab-hero__lede {
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.75;
  color: var(--slate);
  max-width: 52ch;
  margin: 0 0 clamp(22px, 3.5vw, 32px);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .ab-hero__meta {
  border-left: 2px solid var(--volt);
  padding-left: clamp(16px, 3vw, 22px);
}

.page-about .ab-hero__meta dl {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-about .ab-hero__meta dl > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-hero__meta dl > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-hero__meta dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-about .ab-hero__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--ice);
  text-align: right;
}

.page-about .ab-shell {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding-top: clamp(36px, 6vw, 72px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .ab-index {
  display: none;
}

.page-about .ab-body {
  min-width: 0;
  display: grid;
  gap: clamp(36px, 5vw, 64px);
}

.page-about .ab-sec {
  min-width: 0;
}

.page-about .ab-sec--tint {
  background: var(--ink-800);
  padding: clamp(22px, 4vw, 40px);
  border-top: 2px solid var(--line);
}

.page-about .ab-sec__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .ab-sec__num {
  font-family: var(--font-mono);
  font-size: clamp(52px, 12vw, 92px);
  line-height: 0.85;
  letter-spacing: 0.02em;
  color: var(--ink-700);
  -webkit-text-stroke: 1px var(--line);
  transition: color 0.35s var(--ease), -webkit-text-stroke-color 0.35s var(--ease);
}

.page-about .ab-sec__num.is-lit {
  color: var(--lime);
  -webkit-text-stroke-color: var(--lime);
}

.page-about .ab-sec__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ice);
}

.page-about .ab-sec__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
  max-width: 46ch;
}

.page-about .ab-sec__body {
  display: grid;
  gap: 18px;
}

.page-about .ab-sec__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
  max-width: 62ch;
}

.page-about .ab-sec__body p.ab-lead {
  color: var(--ice);
  font-size: clamp(17px, 1.8vw, 19px);
  line-height: 1.65;
}

.page-about .ab-sec__body a {
  color: var(--lime);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .ab-sec__body a:hover,
.page-about .ab-sec__body a:focus-visible {
  color: var(--ice);
}

.page-about .ab-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
  border-left: 2px solid var(--orange);
  padding-left: 14px;
  max-width: 62ch;
  margin: 4px 0 0;
}

.page-about .ab-split {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
}

.page-about .ab-split__text {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .ab-split__figure,
.page-about .ab-wide-figure {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-split__figure img,
.page-about .ab-wide-figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about .ab-figcap {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
  border-left: 2px solid var(--volt);
  padding-left: 12px;
}

.page-about .ab-rows {
  display: grid;
  gap: 0;
}

.page-about .ab-row {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-row:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .ab-row__num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--volt);
  padding-top: 3px;
}

.page-about .ab-row__text h3 {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  letter-spacing: 0.01em;
  margin: 0 0 8px;
  color: var(--ice);
}

.page-about .ab-row__text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
  max-width: 60ch;
}

.page-about .ab-quote {
  background: var(--wine);
  border-left: 6px solid var(--orange);
  padding: clamp(22px, 4vw, 36px);
}

.page-about .ab-quote p {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3.2vw, 30px);
  line-height: 1.32;
  letter-spacing: 0.01em;
  color: var(--ice);
  margin: 0 0 14px;
}

.page-about .ab-quote cite {
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(244, 246, 250, 0.78);
}

.page-about .ab-timeline {
  margin: 0 0 8px;
  display: grid;
  gap: 8px;
}

.page-about .ab-timeline svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .ab-timeline__cap {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-about .ab-nodes {
  display: grid;
}

.page-about .ab-node {
  border-top: 1px solid var(--line);
  padding: 12px 0;
}

.page-about .ab-node:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .ab-node--current {
  background: rgba(183, 255, 60, 0.06);
  border-left: 3px solid var(--lime);
  padding-left: 12px;
}

.page-about .ab-node summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  cursor: pointer;
  list-style: none;
  min-height: 44px;
  padding: 4px 0;
}

.page-about .ab-node summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-node summary:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 3px;
}

.page-about .ab-node__era {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate);
  min-width: 88px;
}

.page-about .ab-node__ver {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--volt);
  min-width: 72px;
}

.page-about .ab-node--current .ab-node__ver {
  color: var(--lime);
}

.page-about .ab-node__label {
  font-size: 15px;
  font-weight: 500;
  color: var(--ice);
  flex: 1 1 160px;
}

.page-about .ab-node__mark {
  margin-left: auto;
  width: 18px;
  height: 18px;
  position: relative;
  flex: none;
}

.page-about .ab-node__mark::before,
.page-about .ab-node__mark::after {
  content: "";
  position: absolute;
  background: var(--slate);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.page-about .ab-node__mark::before {
  width: 12px;
  height: 2px;
}

.page-about .ab-node__mark::after {
  width: 2px;
  height: 12px;
  transition: opacity 0.2s var(--ease);
}

.page-about .ab-node[open] .ab-node__mark::after {
  opacity: 0;
}

.page-about .ab-node__body {
  margin: 8px 0 4px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
  max-width: 62ch;
}

.page-about .ab-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ab-metric {
  background: var(--ink-800);
  padding: 16px 14px;
  display: grid;
  gap: 6px;
}

.page-about .ab-metric__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 34px);
  letter-spacing: 0.06em;
  color: var(--lime);
  line-height: 1;
}

.page-about .ab-metric__label {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-about .ab-subhead {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ice);
  margin: 6px 0 0;
}

.page-about .ab-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-roles li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
  max-width: 60ch;
}

.page-about .ab-roles li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 3px;
  background: var(--orange);
}

.page-about .ab-facts {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-fact {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-fact:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .ab-fact dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--volt);
}

.page-about .ab-fact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
  max-width: 62ch;
}

.page-about .ab-end {
  position: relative;
  overflow: hidden;
  background: linear-gradient(112deg, var(--indigo) 0%, var(--ink-800) 68%);
  padding: clamp(26px, 5vw, 48px);
  border-top: 3px solid var(--orange);
}

.page-about .ab-end::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 220px;
  height: 220px;
  border: 2px solid rgba(183, 255, 60, 0.28);
  transform: rotate(8deg);
  pointer-events: none;
}

.page-about .ab-end h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--ice);
}

.page-about .ab-end p {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
  max-width: 52ch;
}

.page-about .ab-end__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 700px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.9fr);
    align-items: end;
    gap: clamp(24px, 4vw, 44px);
  }

  .page-about .ab-split {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(22px, 3vw, 34px);
  }

  .page-about .ab-row {
    grid-template-columns: 40px 1fr;
    gap: 18px;
    padding: 22px 0;
  }

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

  .page-about .ab-fact {
    grid-template-columns: 168px 1fr;
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 1024px) {
  .page-about .ab-shell {
    grid-template-columns: var(--ab-index-w) minmax(0, 1fr);
    gap: var(--ab-gap);
    align-items: start;
  }

  .page-about .ab-index {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
    border-left: 2px solid var(--line);
    padding-left: 18px;
  }

  .page-about .ab-index__title {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--slate);
    margin: 0 0 16px;
  }

  .page-about .ab-index__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 2px;
  }

  .page-about .ab-index__list a {
    display: flex;
    align-items: baseline;
    gap: 10px;
    min-height: 44px;
    padding: 10px 0;
    font-size: 14px;
    line-height: 1.4;
    color: var(--slate);
    text-decoration: none;
    border-bottom: 1px solid rgba(42, 51, 70, 0.6);
    transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
  }

  .page-about .ab-index__list a .mono {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--volt);
    flex: none;
  }

  .page-about .ab-index__list a:hover,
  .page-about .ab-index__list a:focus-visible {
    color: var(--ice);
    padding-left: 6px;
    border-bottom-color: var(--orange);
  }

  .page-about .ab-index__list a:focus-visible {
    outline: 2px solid var(--volt);
    outline-offset: 2px;
  }

  .page-about .ab-index__foot {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    color: var(--slate);
    margin: 20px 0 0;
  }

  .page-about .ab-sec__head {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    column-gap: 24px;
    align-items: end;
  }

  .page-about .ab-sec__num {
    grid-row: 1 / span 2;
    font-size: clamp(64px, 8vw, 96px);
  }

  .page-about .ab-quote {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-sec__num,
  .page-about .ab-index__list a,
  .page-about .ab-node__mark::after {
    transition: none;
  }
}
<<<END>>>