.page-about {
  --ab-rail: 200px;
  --ab-gap: clamp(28px, 4.5vw, 64px);
  --ab-cut: 16px;
  --ab-shadow: 0 22px 48px -32px rgba(11, 27, 51, 0.55);
}

.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 30px) 0 clamp(34px, 5vw, 60px);
  background:
    linear-gradient(124deg, rgba(10, 108, 255, 0.08) 0%, rgba(246, 248, 251, 0) 46%),
    var(--fd-paper);
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  top: 52%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--fd-blue) 34%, var(--fd-teal) 62%, transparent 100%);
  transform: rotate(-11deg);
  opacity: 0.22;
  pointer-events: none;
  z-index: 0;
}

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

.page-about .fd-crumb {
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-about .ab-hero__title {
  margin: 10px 0 0;
  max-width: 15ch;
  line-height: 1.16;
}

.page-about .ab-hero__lead {
  margin: 16px 0 0;
  max-width: 46ch;
  color: var(--fd-gray);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .ab-hero__figure {
  margin: 0;
  position: relative;
}

.page-about .ab-figure__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  background: var(--fd-mist);
}

.page-about .ab-hero__figure .ab-figure__img {
  aspect-ratio: 16 / 11;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

.page-about .ab-figure__cap {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--fd-gray);
}

.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(30px, 5vw, 52px);
  background: var(--fd-line);
  border-top: 1px solid var(--fd-line);
  border-bottom: 1px solid var(--fd-line);
}

.page-about .ab-stat {
  position: relative;
  background: var(--fd-paper);
  padding: 16px clamp(12px, 2vw, 20px);
}

.page-about .ab-stat__num {
  display: block;
  font-family: var(--fd-font-mono);
  font-weight: 600;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.1;
  color: var(--fd-ink);
  letter-spacing: -0.01em;
}

.page-about .ab-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--fd-gray);
}

.page-about .ab-stat__tip {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: calc(100% - 4px);
  z-index: 3;
  padding: 9px 11px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--fd-paper);
  background: var(--fd-ink);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 200ms var(--fd-ease), transform 200ms var(--fd-ease);
  pointer-events: none;
}

.page-about .ab-stat:hover .ab-stat__tip,
.page-about .ab-stat:focus-within .ab-stat__tip {
  opacity: 1;
  transform: translateY(0);
}

.page-about .ab-story {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ab-gap);
  padding-bottom: clamp(36px, 6vw, 72px);
}

.page-about .ab-rail {
  padding-top: 8px;
}

.page-about .ab-rail__label {
  margin: 0 0 10px;
  font-family: var(--fd-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fd-blue-deep);
}

.page-about .ab-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-rail__list a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 14px;
  color: var(--fd-ink);
  text-decoration: none;
  background: var(--fd-mist);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background 180ms var(--fd-ease), color 180ms var(--fd-ease);
}

.page-about .ab-rail__list a:hover,
.page-about .ab-rail__list a:focus-visible {
  background: var(--fd-blue);
  color: var(--fd-paper);
}

.page-about .ab-rail__note {
  display: none;
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--fd-teal);
  font-size: 13px;
  line-height: 1.75;
  color: var(--fd-gray);
}

.page-about .ab-section {
  padding: clamp(30px, 4.5vw, 56px) 0;
  border-top: 1px solid var(--fd-line);
  scroll-margin-top: 96px;
}

.page-about .ab-section:first-child {
  border-top: 0;
  padding-top: clamp(8px, 2vw, 16px);
}

.page-about .ab-section:target {
  box-shadow: inset 3px 0 0 var(--fd-blue);
  padding-left: clamp(12px, 2vw, 20px);
}

.page-about .ab-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
}

.page-about .ab-mark__n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 24px;
  font-size: 12px;
  color: var(--fd-paper);
  background: var(--fd-blue);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.page-about .ab-mark__t {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--fd-gray);
}

.page-about .ab-mark--inv .ab-mark__n {
  background: var(--fd-teal);
  color: var(--fd-ink);
}

.page-about .ab-mark--inv .ab-mark__t {
  color: rgba(246, 248, 251, 0.72);
}

.page-about .ab-prose p {
  margin: 0 0 16px;
  color: var(--fd-ink);
  line-height: 1.85;
}

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

.page-about .ab-steps {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .ab-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  background: var(--fd-mist);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
  transition: transform 220ms var(--fd-ease), background 220ms var(--fd-ease);
}

.page-about .ab-step:hover {
  transform: translate(0, -2px);
  background: var(--fd-mint);
}

.page-about .ab-step__n {
  font-size: 13px;
  font-weight: 600;
  color: var(--fd-blue-deep);
  padding-top: 3px;
}

.page-about .ab-step__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--fd-ink);
  letter-spacing: -0.01em;
}

.page-about .ab-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fd-gray);
}

.page-about .ab-quote {
  margin: 22px 0 0;
  padding: 16px 0 16px 20px;
  border-left: 4px solid var(--fd-blue);
  background: linear-gradient(90deg, rgba(10, 108, 255, 0.07), rgba(10, 108, 255, 0));
}

.page-about .ab-quote__text {
  margin: 0;
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--fd-ink);
  letter-spacing: -0.01em;
}

.page-about .ab-quote__by {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--fd-gray);
}

.page-about .ab-tlfig {
  margin: 22px 0 6px;
}

.page-about .ab-tlfig .ab-figure__img {
  aspect-ratio: 12 / 7;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .ab-timeline {
  position: relative;
  margin: 20px 0 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--fd-blue) 0%, var(--fd-teal) 100%);
}

.page-about .ab-timeline__item {
  position: relative;
  margin-bottom: 10px;
}

.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 20px;
  width: 10px;
  height: 10px;
  background: var(--fd-paper);
  border: 2px solid var(--fd-blue);
  transform: rotate(45deg);
}

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

.page-about .ab-tl {
  background: var(--fd-paper);
  border: 1px solid var(--fd-line);
  transition: border-color 200ms var(--fd-ease), background 200ms var(--fd-ease);
}

.page-about .ab-tl[open] {
  border-color: var(--fd-teal);
  background: var(--fd-mint);
}

.page-about .ab-tl__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-about .ab-tl__year {
  flex: 0 0 auto;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 600;
  color: var(--fd-blue-deep);
}

.page-about .ab-tl__title {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--fd-ink);
}

.page-about .ab-tl__arrow {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--fd-ink);
  border-bottom: 2px solid var(--fd-ink);
  transform: rotate(45deg);
  transition: transform 220ms var(--fd-ease);
}

.page-about .ab-tl[open] .ab-tl__arrow {
  transform: rotate(-135deg);
}

.page-about .ab-tl__body {
  padding: 0 16px 16px;
}

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

.page-about .ab-team {
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
  margin-top: 18px;
}

.page-about .ab-roles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-role {
  padding: 12px 14px;
  background: var(--fd-paper);
  border-left: 3px solid var(--fd-teal);
}

.page-about .ab-role__n {
  display: block;
  font-size: 20px;
  font-weight: 600;
  color: var(--fd-ink);
  line-height: 1.2;
}

.page-about .ab-role__t {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--fd-gray);
}

.page-about .ab-team__figure {
  margin: 0;
}

.page-about .ab-team__figure .ab-figure__img {
  aspect-ratio: 3 / 4;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-about .ab-section--ink {
  border-top: 0;
  padding: 0;
  margin-left: calc(-1 * var(--fd-gutter));
  margin-right: calc(-1 * var(--fd-gutter));
}

.page-about .ab-reach {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 5.5vw, 72px) var(--fd-gutter);
  background: var(--fd-ink);
  color: var(--fd-paper);
}

.page-about .ab-reach::before {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 220px;
  height: 220px;
  background-image: radial-gradient(rgba(10, 108, 255, 0.55) 1.4px, transparent 1.4px);
  background-size: 12px 12px;
  opacity: 0.6;
  pointer-events: none;
}

.page-about .ab-reach__title {
  position: relative;
  margin: 0 0 16px;
  color: var(--fd-paper);
  max-width: 20ch;
}

.page-about .ab-prose--inv p {
  color: rgba(246, 248, 251, 0.82);
  position: relative;
}

.page-about .ab-reach__grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  background: rgba(201, 214, 232, 0.22);
  border: 1px solid rgba(201, 214, 232, 0.22);
}

.page-about .ab-reach__cell {
  padding: 16px 14px;
  background: var(--fd-ink);
}

.page-about .ab-reach__num {
  display: block;
  font-family: var(--fd-font-mono);
  font-weight: 600;
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.15;
  color: var(--fd-teal);
  letter-spacing: -0.01em;
}

.page-about .ab-reach__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(246, 248, 251, 0.72);
}

.page-about .ab-reach__link {
  position: relative;
  display: inline-block;
  margin-top: 22px;
  padding-bottom: 3px;
  font-size: 15px;
  font-weight: 700;
  color: var(--fd-paper);
  text-decoration: none;
  border-bottom: 2px solid var(--fd-orange);
  transition: color 180ms var(--fd-ease);
}

.page-about .ab-reach__link:hover,
.page-about .ab-reach__link:focus-visible {
  color: var(--fd-orange);
}

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

.page-about .ab-cta {
  display: grid;
  gap: 20px;
  padding: clamp(22px, 3.6vw, 40px);
  color: var(--fd-paper);
  background: linear-gradient(118deg, var(--fd-blue) 0%, var(--fd-blue-deep) 58%, var(--fd-ink) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-about .ab-cta__title {
  margin: 0 0 10px;
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--fd-paper);
}

.page-about .ab-cta__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(246, 248, 251, 0.86);
  max-width: 52ch;
}

.page-about .ab-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.page-about .ab-cta__link {
  font-size: 15px;
  font-weight: 700;
  color: var(--fd-paper);
  text-decoration: none;
  border-bottom: 2px solid rgba(246, 248, 251, 0.5);
  padding-bottom: 2px;
  transition: border-color 180ms var(--fd-ease);
}

.page-about .ab-cta__link:hover,
.page-about .ab-cta__link:focus-visible {
  border-bottom-color: var(--fd-teal);
}

@media (max-width: 759px) {
  .page-about .ab-stat__tip {
    position: static;
    margin-top: 8px;
    padding: 0;
    font-size: 12px;
    line-height: 1.65;
    color: var(--fd-gray);
    background: transparent;
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 760px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .ab-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-about .ab-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: end;
  }

  .page-about .ab-story {
    grid-template-columns: var(--ab-rail) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .ab-rail {
    position: sticky;
    top: 104px;
    align-self: start;
    padding-top: 14px;
    border-top: 1px solid var(--fd-line);
  }

  .page-about .ab-rail__list {
    flex-direction: column;
    gap: 2px;
  }

  .page-about .ab-rail__list a {
    display: block;
    padding: 8px 10px;
    background: transparent;
    border-left: 2px solid var(--fd-line);
    clip-path: none;
  }

  .page-about .ab-rail__list a:hover,
  .page-about .ab-rail__list a:focus-visible {
    background: var(--fd-mist);
    border-left-color: var(--fd-blue);
    color: var(--fd-blue-deep);
  }

  .page-about .ab-rail__note {
    display: block;
  }

  .page-about .ab-team {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .ab-hero__title {
    font-size: clamp(34px, 3.4vw, 46px);
  }

  .page-about .ab-step {
    padding: 20px 22px;
  }

  .page-about .ab-cta {
    padding: clamp(30px, 3.6vw, 48px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-step,
  .page-about .ab-stat__tip,
  .page-about .ab-tl__arrow {
    transition: none;
  }

  .page-about .ab-step:hover {
    transform: none;
  }
}
<<<END>>>