.page-about {
  --ab-side: 208px;
  --ab-rule: 1px solid var(--line-soft);
}

.page-about .ab-crumb {
  padding-top: clamp(18px, 2.6vw, 28px);
}

.page-about .ab-hero {
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(26px, 3.6vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-about .ab-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.005em;
  color: var(--paper);
  margin: 12px 0 18px;
  max-width: 22ch;
}

.page-about .ab-lede {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--paper-dim);
}

.page-about .ab-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ab-stat {
  background: var(--ink);
  padding: 16px 18px;
}

.page-about .ab-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(21px, 3vw, 29px);
  letter-spacing: 0.02em;
  color: var(--cyan);
  line-height: 1.1;
}

.page-about .ab-stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

@media (min-width: 720px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .ab-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding-top: clamp(6px, 1.6vw, 16px);
}

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

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

@media (min-width: 960px) {
  .page-about .ab-shell {
    grid-template-columns: var(--ab-side) minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-about .ab-index {
    display: block;
    position: sticky;
    top: 20px;
    align-self: start;
    padding: 44px 20px 44px 0;
    border-right: var(--ab-rule);
  }
}

.page-about .ab-index-title {
  margin: 0 0 14px;
  padding-left: 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.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;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--paper-dim);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .ab-index-list a .mono {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.page-about .ab-index-list a:hover,
.page-about .ab-index-list a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--cyan-soft);
}

.page-about .ab-section {
  padding: clamp(34px, 5vw, 60px) 0;
  border-bottom: var(--ab-rule);
  scroll-margin-top: 24px;
}

.page-about .ab-section:last-of-type {
  border-bottom: 0;
  padding-bottom: clamp(40px, 6vw, 72px);
}

.page-about .ab-section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 10px;
  align-items: baseline;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .ab-sec-num {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-about .ab-section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.18;
  color: var(--paper);
}

.page-about .ab-sub {
  grid-column: 2 / -1;
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .ab-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
}

@media (min-width: 840px) {
  .page-about .ab-split {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: start;
  }

  .page-about .ab-split--rev {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
  }

  .page-about .ab-split--rev .media-figure {
    margin-top: 6px;
  }
}

.page-about .ab-prose p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--paper-dim);
}

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

.page-about .ab-lead-line {
  border-left: 2px solid var(--cyan);
  padding-left: 16px;
  color: var(--paper) !important;
}

.page-about .media-figure {
  margin: 0;
}

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

.page-about .media-frame {
  border: 1px solid var(--line);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-about .media-caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-about .ab-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--ab-rule);
}

.page-about .ab-timeline--tail {
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .ab-tl-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  row-gap: 8px;
  padding: 22px 0 22px 24px;
  border-left: 1px solid var(--line);
  border-bottom: var(--ab-rule);
}

.page-about .ab-tl-item::before {
  content: "";
  position: absolute;
  left: -3.5px;
  top: 32px;
  width: 6px;
  height: 6px;
  background: var(--rock);
}

.page-about .ab-tl-item--current::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 26, 0.14);
}

.page-about .ab-tl-year {
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.1em;
  color: var(--paper);
}

.page-about .ab-tl-body h3 {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .ab-tl-body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-dim);
}

@media (min-width: 860px) {
  .page-about .ab-tl-item {
    grid-template-columns: 116px minmax(0, 1fr);
    column-gap: 32px;
    padding: 26px 0 26px 32px;
  }

  .page-about .ab-tl-year {
    font-size: 20px;
    text-align: right;
  }

  .page-about .ab-tl-body h3 {
    margin-top: 6px;
  }
}

.page-about .ab-tl-figure {
  margin: clamp(24px, 3vw, 36px) 0 0;
}

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

@media (min-width: 660px) {
  .page-about .ab-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .ab-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .ab-team-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--ink);
  padding: 22px 20px 24px;
  transition: background-color 0.2s ease;
}

.page-about .ab-team-card:hover {
  background: var(--deck);
}

.page-about .ab-team-idx {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .ab-team-card h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-team-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .ab-rhythm {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

@media (min-width: 760px) {
  .page-about .ab-rhythm {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
  }
}

.page-about .ab-rhythm-card {
  background: var(--ink);
  border: 1px solid var(--line);
  padding: 20px 20px 22px;
}

@media (min-width: 760px) {
  .page-about .ab-rhythm-card {
    border: 0;
  }
}

.page-about .ab-rhythm-tag {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  background: var(--cyan-soft);
}

.page-about .ab-rhythm-card h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--paper);
}

.page-about .ab-rhythm-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .ab-cat {
  margin-top: clamp(24px, 3.4vw, 40px);
  border-top: var(--ab-rule);
  padding-top: 22px;
}

.page-about .ab-cat-title {
  margin: 0 0 18px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-about .ab-cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px 32px;
}

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

.page-about .ab-cat-list li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  column-gap: 12px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: var(--ab-rule);
}

.page-about .ab-cat-num {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--clay);
  padding-top: 4px;
}

.page-about .ab-cat-list h4 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-cat-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-about .ab-net {
  display: block;
  width: 100%;
  max-width: 380px;
  height: auto;
  margin-top: 22px;
  padding: 10px;
  box-sizing: border-box;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-about .ab-net-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  fill: var(--muted);
}

.page-about .ab-net-label--core {
  fill: var(--cyan);
}

.page-about .ab-award {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 18px;
  align-items: start;
  margin-top: clamp(24px, 3.4vw, 40px);
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--deck);
}

.page-about .ab-award-year {
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--orange);
  line-height: 1.2;
}

.page-about .ab-award-body h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-award-body p {
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--paper-dim);
}

.page-about .ab-next-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 700px) {
  .page-about .ab-next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .ab-next-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  box-sizing: border-box;
  padding: 20px 20px 22px;
  border: 1px solid var(--line);
  background: var(--ink);
  text-decoration: none;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-about .ab-next-card:hover,
.page-about .ab-next-card:focus-visible {
  border-color: var(--cyan);
  background: var(--deck);
  transform: translateX(3px);
}

.page-about .ab-next-idx {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .ab-next-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.3;
  color: var(--paper);
}

.page-about .ab-next-desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-about .ab-next-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-top: 16px;
  border-top: var(--ab-rule);
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .ab-next-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 216, 240, 0.4);
}

.page-about .ab-next-note a:hover,
.page-about .ab-next-note a:focus-visible {
  border-bottom-color: var(--cyan);
}

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

  .page-about .ab-next-card:hover,
  .page-about .ab-next-card:focus-visible {
    transform: none;
  }

  .page-about .ab-tl-item--current::before {
    box-shadow: none;
  }
}
<<<END>>>