.page-about {
  --ab-edge: rgba(47, 90, 110, 0.55);
  --ab-soft: rgba(47, 90, 110, 0.3);
  --ab-card-bg: #0F2C44;
}

.page-about a:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* breadcrumb */
.page-about .breadcrumb {
  padding: 18px 0 0;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--mist);
}

.page-about .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .breadcrumb-sep {
  color: var(--line);
}

.page-about .breadcrumb-current {
  color: var(--fog);
}

/* hero */
.page-about .ab-hero {
  padding: 28px 0 48px;
  border-bottom: 1px solid var(--ab-edge);
  background-image:
    linear-gradient(rgba(47, 90, 110, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 90, 110, 0.14) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: center top;
}

.page-about .ab-hero__grid {
  display: grid;
  gap: 30px;
}

.page-about .ab-hero__main h1 {
  margin: 0 0 18px;
  font-size: 29px;
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-about .ab-hero__lead {
  margin: 0 0 26px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

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

/* brand index rail */
.page-about .ab-index {
  border-left: 2px solid var(--cyan);
  padding-left: 16px;
}

.page-about .ab-index .eyebrow {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .ab-index__list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-about .ab-index__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--ab-soft);
}

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

.page-about .ab-index__row dd {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--fog);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 899px) {
  .page-about .ab-hero__main {
    order: 1;
  }

  .page-about .ab-index {
    order: 2;
  }
}

/* stats */
.page-about .ab-stats {
  background: var(--ink-900);
  border-bottom: 1px solid var(--ab-edge);
}

.page-about .ab-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 12px;
  padding-top: 26px;
  padding-bottom: 26px;
}

.page-about .ab-stat {
  border-left: 1px solid var(--ab-edge);
  padding-left: 12px;
}

.page-about .ab-stat__num {
  margin: 0 0 6px;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-about .ab-stat__label {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

/* generic section rhythm */
.page-about .ab-sec {
  padding: 52px 0;
  border-bottom: 1px solid var(--ab-soft);
}

.page-about .ab-head {
  max-width: 68ch;
  margin-bottom: 30px;
}

.page-about .ab-head .eyebrow {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--sage);
}

.page-about .ab-head h2 {
  margin: 0 0 14px;
  font-size: 24px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--fog);
}

.page-about .ab-head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* origin */
.page-about .ab-origin__grid {
  display: grid;
  gap: 24px;
}

.page-about .ab-origin__text p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

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

.page-about .ab-origin__aside {
  background: var(--ink-700);
  padding: 18px;
}

.page-about .ab-origin__tag {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sage);
}

.page-about .ab-origin__aside p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* team */
.page-about .ab-team__top {
  display: grid;
  gap: 22px;
  margin-bottom: 30px;
}

.page-about .ab-team__figure {
  margin: 0;
  border: 1px solid var(--ab-edge);
}

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

.page-about .ab-team__intro .eyebrow {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--sage);
}

.page-about .ab-team__intro h2 {
  margin: 0 0 14px;
  font-size: 24px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--fog);
}

.page-about .ab-team__intro p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

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

.page-about .ab-card {
  position: relative;
  background: var(--ink-700);
  border: 1px solid var(--ab-edge);
  border-top: 2px solid var(--ab-edge);
  padding: 20px 18px;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-about .ab-card:hover,
.page-about .ab-card:focus {
  border-top-color: var(--cyan);
  background: var(--ab-card-bg);
  transform: translateY(-2px);
}

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

.page-about .ab-card__num {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .ab-card__title {
  margin: 0 0 10px;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--fog);
}

.page-about .ab-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .ab-card__more {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--ab-soft);
  font-size: 13px;
  line-height: 1.75;
  color: var(--sage);
}

/* timeline */
.page-about .ab-track {
  list-style: none;
  margin: 0 0 34px;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--ab-edge);
  display: grid;
  gap: 26px;
}

.page-about .ab-track__item {
  position: relative;
}

.page-about .ab-track__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-800);
  border: 1.5px solid var(--cyan);
  transition: background-color 0.2s ease;
}

.page-about .ab-track__item:hover::before {
  background: var(--cyan);
}

.page-about .ab-track__year {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .ab-track__title {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--fog);
}

.page-about .ab-track__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .ab-track__figure {
  margin: 0;
  border: 1px solid var(--ab-edge);
}

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

.page-about .ab-track__figure figcaption {
  padding: 10px 14px;
  background: var(--ink-900);
  border-top: 1px solid var(--ab-edge);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sage);
}

/* ecosystem */
.page-about .ab-eco__grid {
  display: grid;
  gap: 26px;
}

.page-about .ab-eco__figure {
  margin: 0;
  border: 1px solid var(--ab-edge);
}

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

.page-about .ab-eco__body .eyebrow {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--sage);
}

.page-about .ab-eco__body h2 {
  margin: 0 0 14px;
  font-size: 24px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--fog);
}

.page-about .ab-eco__lead {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .ab-eco__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-eco__item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--ab-soft);
}

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

.page-about .ab-eco__count {
  margin: 0;
  font-size: 27px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--orange);
}

.page-about .ab-eco__count span {
  margin-left: 3px;
  font-size: 12px;
  font-weight: 400;
  color: var(--mist);
}

.page-about .ab-eco__item h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .ab-eco__item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

/* maintenance strip */
.page-about .ab-maint {
  padding: 52px 0;
  background: var(--ink-900);
  border-top: 1px solid var(--ab-edge);
  border-bottom: 1px solid var(--ab-edge);
}

.page-about .ab-maint__title {
  margin: 0 0 24px;
  font-size: 22px;
  line-height: 1.35;
  font-weight: 800;
  color: var(--fog);
}

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

.page-about .ab-maint__grid .panel {
  padding: 18px;
}

.page-about .ab-panel__num {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--sage);
}

/* scenes */
.page-about .ab-scenes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-about .ab-scenes__item {
  border-left: 2px solid var(--ab-edge);
  padding-left: 16px;
  transition: border-color 0.2s ease;
}

.page-about .ab-scenes__item:hover {
  border-left-color: var(--cyan);
}

.page-about .ab-scenes__item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--fog);
}

.page-about .ab-scenes__item p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .ab-scenes__link {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease;
}

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

/* closing */
.page-about .ab-cta {
  padding: 46px 0 56px;
  border-top: 1px solid var(--ab-edge);
  background: linear-gradient(135deg, rgba(57, 224, 212, 0.09), rgba(255, 158, 90, 0.08));
}

.page-about .ab-cta__inner {
  display: grid;
  gap: 22px;
}

.page-about .ab-cta .eyebrow {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--sage);
}

.page-about .ab-cta h2 {
  margin: 8px 0 12px;
  font-size: 24px;
  line-height: 1.3;
  font-weight: 800;
  color: var(--fog);
}

.page-about .ab-cta p {
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

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

/* wider screens */
@media (min-width: 700px) {
  .page-about .ab-hero {
    padding: 40px 0 60px;
  }

  .page-about .ab-hero__main h1 {
    font-size: 36px;
  }

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

  .page-about .ab-stat {
    padding-left: 16px;
  }

  .page-about .ab-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

  .page-about .ab-scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .ab-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .ab-hero__main h1 {
    font-size: 44px;
  }

  .page-about .ab-head h2 {
    font-size: 28px;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .ab-team__top {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 30px;
    align-items: center;
  }

  .page-about .ab-eco__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
  }

  .page-about .ab-eco__body h2,
  .page-about .ab-team__intro h2 {
    font-size: 28px;
  }

  .page-about .ab-track {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
    margin-bottom: 40px;
    padding: 30px 0 0;
    border-left: 0;
    border-top: 1px solid var(--ab-edge);
  }

  .page-about .ab-track__item {
    padding-right: 18px;
  }

  .page-about .ab-track__item::before {
    left: 0;
    top: -35px;
  }
}

@media (min-width: 1000px) {
  .page-about .ab-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .ab-card__more {
    max-height: 0;
    margin-top: 0;
    padding-top: 0;
    opacity: 0;
    overflow: hidden;
    border-top-color: transparent;
    transition: max-height 0.26s ease, opacity 0.2s ease, padding-top 0.26s ease,
      margin-top 0.26s ease, border-color 0.2s ease;
  }

  .page-about .ab-card:hover .ab-card__more,
  .page-about .ab-card:focus .ab-card__more,
  .page-about .ab-card:focus-within .ab-card__more {
    max-height: 240px;
    margin-top: 14px;
    padding-top: 12px;
    opacity: 1;
    border-top-color: var(--ab-soft);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }

  .page-about .ab-card:hover,
  .page-about .ab-card:focus {
    transform: none;
  }
}
<<<END>>>