.page-about {
  --ab-line: rgba(94, 113, 128, 0.32);
  --ab-line-soft: rgba(94, 113, 128, 0.18);
  --ab-gap: clamp(18px, 4vw, 36px);
  --ab-pad: clamp(24px, 5vw, 44px);
  --ab-card: rgba(11, 44, 69, 0.72);
  background:
    radial-gradient(120% 70% at 88% -4%, rgba(53, 242, 208, 0.11), transparent 58%),
    radial-gradient(90% 60% at 0% 24%, rgba(111, 143, 106, 0.10), transparent 62%),
    var(--c-sea);
  color: var(--c-fog);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: hidden;
}

.page-about .ab-hero {
  padding: clamp(28px, 6vw, 72px) 0 clamp(28px, 5vw, 56px);
}

.page-about .ab-hero-grid {
  display: grid;
  gap: var(--ab-gap);
  align-items: start;
}

.page-about .ab-hero-copy .breadcrumb {
  margin-bottom: 14px;
}

.page-about .ab-hero-copy .eyebrow {
  margin: 0 0 14px;
  color: var(--c-cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-about h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(32px, 7vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--c-fog);
  text-wrap: balance;
}

.page-about .ab-lede {
  margin: 0 0 26px;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(234, 242, 245, 0.82);
}

.page-about .ab-hero-meta {
  display: grid;
  gap: 14px;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--ab-line);
}

.page-about .ab-meta-item dt {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--c-amber);
}

.page-about .ab-meta-item dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-about .ab-hero-figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--ab-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background:
    linear-gradient(rgba(94, 113, 128, 0.16) 1px, transparent 1px) 0 0 / 100% 42px,
    linear-gradient(90deg, rgba(94, 113, 128, 0.16) 1px, transparent 1px) 0 0 / 42px 100%,
    var(--c-sea-2);
}

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

.page-about .ab-fig-cap {
  display: block;
  padding: 10px 16px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-slate);
  border-top: 1px solid var(--ab-line-soft);
  background: rgba(3, 18, 29, 0.5);
}

.page-about .ab-rail-wrap {
  display: grid;
  gap: clamp(20px, 4vw, 44px);
}

.page-about .ab-rail {
  border: 1px solid var(--ab-line);
  border-radius: var(--radius-m);
  padding: 16px 18px;
  background: rgba(11, 44, 69, 0.5);
}

.page-about .ab-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--c-slate);
}

.page-about .ab-rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 2px 10px;
  border-left: 2px solid transparent;
  border-image: linear-gradient(180deg, var(--c-slate), var(--c-cyan)) 1;
}

.page-about .ab-rail-list a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  line-height: 1.4;
  color: var(--c-slate);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-about .ab-rail-list a:hover,
.page-about .ab-rail-list a:focus-visible {
  color: var(--c-cyan);
}

.page-about .ab-block {
  position: relative;
  padding: clamp(26px, 5vw, 52px) 0;
  border-top: 1px solid var(--ab-line);
}

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

.page-about .ab-block-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
}

.page-about .ab-sec-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
  padding-top: 4px;
}

.page-about .ab-block h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  font-weight: 700;
  color: var(--c-fog);
}

.page-about .ab-intro {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(234, 242, 245, 0.76);
}

.page-about .ab-body--split {
  display: grid;
  gap: var(--ab-gap);
}

.page-about .ab-prose p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(234, 242, 245, 0.84);
}

.page-about .ab-prose p:last-child {
  margin-bottom: 0;
}

.page-about .ab-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ab-points li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border-left: 2px solid var(--c-moss);
  background: linear-gradient(90deg, rgba(111, 143, 106, 0.14), transparent 78%);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
}

.page-about .ab-point-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-moss);
  padding-top: 3px;
}

.page-about .ab-points p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(234, 242, 245, 0.8);
}

.page-about .ab-legend {
  display: grid;
  gap: 14px;
}

.page-about .ab-legend-item {
  display: grid;
  gap: 14px;
  padding: 20px 20px 22px;
  border: 1px solid var(--ab-line);
  border-radius: var(--radius-m);
  background: var(--ab-card);
}

.page-about .ab-legend-item--lead {
  background:
    radial-gradient(120% 120% at 100% 0%, rgba(53, 242, 208, 0.12), transparent 62%),
    var(--ab-card);
  border-color: rgba(53, 242, 208, 0.3);
}

.page-about .ab-legend-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-s);
  border: 1px solid var(--ab-line);
  background: rgba(3, 18, 29, 0.5);
}

.page-about .ab-legend-icon--cyan { color: var(--c-cyan); border-color: rgba(53, 242, 208, 0.4); }
.page-about .ab-legend-icon--amber { color: var(--c-amber); border-color: rgba(255, 180, 90, 0.4); }
.page-about .ab-legend-icon--moss { color: var(--c-moss); border-color: rgba(111, 143, 106, 0.5); }

.page-about .ab-legend-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--c-fog);
}

.page-about .ab-legend-item p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(234, 242, 245, 0.8);
}

.page-about .ab-legend-list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .ab-legend-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(234, 242, 245, 0.72);
}

.page-about .ab-legend-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-cyan);
}

.page-about .ab-inline-link {
  display: inline-block;
  font-size: 13.5px;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 208, 0.4);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .ab-inline-link:hover,
.page-about .ab-inline-link:focus-visible {
  color: var(--c-amber);
  border-bottom-color: rgba(255, 180, 90, 0.6);
}

.page-about .ab-nodes {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ab-node {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border: 1px dashed var(--ab-line);
  border-radius: var(--radius-s);
  background: rgba(6, 27, 43, 0.6);
}

.page-about .ab-node-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid rgba(53, 242, 208, 0.45);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-cyan);
}

.page-about .ab-node h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--c-fog);
}

.page-about .ab-node p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(234, 242, 245, 0.72);
}

.page-about .ab-figure {
  margin: 22px 0 0;
  border: 1px solid var(--ab-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--c-sea-2);
}

.page-about .ab-figure--wide {
  margin-bottom: 26px;
}

.page-about .ab-meter {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  border-radius: var(--radius-s);
  overflow: hidden;
  background: var(--ab-line-soft);
}

.page-about .ab-meter-item {
  padding: 16px 18px;
  background: rgba(6, 27, 43, 0.9);
}

.page-about .ab-meter-num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-amber);
}

.page-about .ab-meter-item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(234, 242, 245, 0.74);
}

.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 4px 0 0 22px;
  position: relative;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-slate), var(--c-clay) 32%, var(--c-amber) 68%, var(--c-cyan));
}

.page-about .ab-tl-item {
  position: relative;
  padding-bottom: 20px;
}

.page-about .ab-tl-item:last-child {
  padding-bottom: 0;
}

.page-about .ab-tl-item::before {
  content: "";
  position: absolute;
  left: -23px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-clay);
  box-shadow: 0 0 0 3px var(--c-sea);
}

.page-about .ab-tl-item--now::before {
  background: var(--c-amber);
  box-shadow: 0 0 0 3px var(--c-sea), 0 0 0 6px rgba(255, 180, 90, 0.22);
}

.page-about .ab-tl-year {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--c-amber);
}

.page-about .ab-tl-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-fog);
}

.page-about .ab-tl-item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(234, 242, 245, 0.74);
}

.page-about .ab-principles {
  display: grid;
  gap: 12px;
  margin-bottom: 26px;
}

.page-about .ab-principle {
  position: relative;
  padding: 22px 20px 20px;
  border-radius: var(--radius-m);
  border: 1px solid var(--ab-line);
  background: var(--ab-card);
  overflow: hidden;
}

.page-about .ab-principle::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
}

.page-about .ab-principle--cyan::before { background: var(--c-cyan); }
.page-about .ab-principle--amber::before { background: var(--c-amber); }
.page-about .ab-principle--moss::before { background: var(--c-moss); }

.page-about .ab-principle h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--c-fog);
}

.page-about .ab-principle p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(234, 242, 245, 0.78);
}

.page-about .ab-contact {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: var(--ab-pad);
  border-radius: var(--radius-l);
  background:
    radial-gradient(110% 120% at 92% 4%, rgba(183, 110, 78, 0.16), transparent 60%),
    var(--c-cream);
  color: var(--c-abyss);
}

.page-about .ab-contact h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 27px);
  letter-spacing: -0.015em;
  color: var(--c-abyss);
}

.page-about .ab-contact-copy p {
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(3, 18, 29, 0.78);
}

.page-about .ab-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-contact-list {
  margin: 0;
  display: grid;
  gap: 1px;
  border-radius: var(--radius-s);
  overflow: hidden;
  background: rgba(3, 18, 29, 0.12);
  align-self: start;
}

.page-about .ab-contact-row {
  padding: 13px 16px;
  background: rgba(244, 239, 228, 0.94);
}

.page-about .ab-contact-row dt {
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--c-clay);
}

.page-about .ab-contact-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  word-break: break-word;
  color: var(--c-abyss);
}

.page-about .ab-contact-row a {
  color: var(--c-abyss);
  text-decoration: none;
  border-bottom: 1px solid rgba(183, 110, 78, 0.5);
}

.page-about .ab-contact-row a:hover,
.page-about .ab-contact-row a:focus-visible {
  color: var(--c-clay);
}

.page-about .ab-more {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-slate);
}

@media (min-width: 640px) {
  .page-about .ab-hero-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .ab-meter {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-about .ab-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .ab-legend-item--lead {
    grid-column: span 2;
    grid-template-columns: 52px 1fr;
    align-items: start;
    padding: 24px 26px 26px;
  }

  .page-about .ab-principles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-contact {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(28px, 4vw, 60px);
  }

  .page-about .ab-body--split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 52px);
  }
}

@media (min-width: 960px) {
  .page-about .ab-rail-wrap {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-about .ab-rail {
    position: sticky;
    top: 96px;
    padding: 20px 18px 22px;
  }

  .page-about .ab-rail-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-about .ab-rail-list a {
    padding: 7px 0 7px 2px;
  }

  .page-about .ab-timeline {
    padding-left: 28px;
  }

  .page-about .ab-tl-item {
    display: grid;
    grid-template-columns: 90px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
    padding-bottom: 24px;
  }

  .page-about .ab-tl-item::before {
    left: -29px;
    top: 8px;
  }

  .page-about .ab-tl-year {
    margin-bottom: 0;
    padding-top: 2px;
  }
}

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