.page-about {
  --ab-rail-w: 172px;
  --ab-gap-lg: clamp(26px, 4vw, 46px);
  --ab-gap-md: clamp(16px, 2.4vw, 26px);
  --ab-plate-bg: rgba(244, 233, 216, 0.04);
  display: block;
}

.page-about .ab-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--mist);
  margin-bottom: 18px;
}

.page-about .ab-crumb__sep {
  color: var(--line-strong);
}

.page-about .ab-crumb__now {
  color: var(--cyan-300);
}

/* ---------- hero ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% auto -20%;
  height: 78%;
  background:
    radial-gradient(38% 55% at 22% 30%, rgba(53, 224, 208, 0.16), transparent 70%),
    radial-gradient(32% 46% at 78% 62%, rgba(255, 122, 61, 0.13), transparent 72%);
  pointer-events: none;
}

.page-about .ab-hero__inner {
  position: relative;
  display: grid;
  gap: var(--ab-gap-md);
}

.page-about .ab-hero__title {
  margin: 6px 0 16px;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.page-about .ab-hero__lede {
  max-width: 46ch;
}

.page-about .ab-hero__art {
  align-self: end;
  max-width: 300px;
  margin: 0 auto;
}

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

.page-about .ab-hero__facts {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 10px;
}

.page-about .ab-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--surface-1);
}

.page-about .ab-fact__num {
  font-size: 26px;
  line-height: 1;
  color: var(--cyan-300);
}

.page-about .ab-fact__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- origin ---------- */
.page-about .ab-origin__inner {
  display: grid;
  gap: var(--ab-gap-lg);
}

.page-about .ab-origin__text p {
  margin: 0 0 14px;
  color: var(--fog);
  opacity: 0.9;
}

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

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

.page-about .ab-plate {
  position: relative;
  padding: 18px 18px 18px 22px;
  border-radius: var(--r-md);
  border: 1px solid rgba(244, 233, 216, 0.14);
  background: var(--ab-plate-bg);
  border-left: 2px solid var(--orange-500);
}

.page-about .ab-plate__no {
  display: block;
  font-size: 12px;
  color: var(--orange-300);
  margin-bottom: 6px;
}

.page-about .ab-plate__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--fog);
}

.page-about .ab-plate__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- section head ---------- */
.page-about .ab-head {
  margin-bottom: var(--ab-gap-md);
}

.page-about .ab-head__sub {
  margin: 12px 0 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- figure ---------- */
.page-about .ab-figure {
  margin: 0 0 var(--ab-gap-lg);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  background: var(--surface-2);
}

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

.page-about .ab-cap {
  padding: 10px 16px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

.page-about .ab-figure--wide img {
  aspect-ratio: 2 / 1;
}

.page-about .ab-figure--split img,
.page-about .ab-figure--tall img {
  aspect-ratio: 10 / 7;
}

/* ---------- timeline ---------- */
.page-about .ab-tl {
  display: grid;
  gap: var(--ab-gap-md);
}

.page-about .ab-tl__rail {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: var(--surface-2);
  padding: 8px 10px;
}

.page-about .ab-tl__note {
  display: block;
  font-size: 11px;
  letter-spacing: 0.28em;
  color: var(--mist);
  padding: 2px 4px 8px;
}

.page-about .ab-tl__dots {
  list-style: none;
  margin: 0;
  padding: 0 0 2px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .ab-tl__dots::-webkit-scrollbar {
  display: none;
}

.page-about .ab-tl__dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  min-height: 44px;
  padding: 0 14px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  background: rgba(53, 224, 208, 0.07);
  color: var(--cyan-300);
  text-decoration: none;
  font-size: 14px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-about .ab-tl__dot:hover,
.page-about .ab-tl__dot:focus-visible {
  border-color: var(--line-strong);
  background: rgba(53, 224, 208, 0.14);
}

.page-about .ab-tl__dot--now {
  border-color: var(--cyan-500);
  color: var(--ink-900);
  background: var(--cyan-500);
}

.page-about .ab-tl__stream {
  display: grid;
  gap: 12px;
}

.page-about .ab-ver {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: var(--surface-1);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
  transition: border-color 0.22s ease, transform 0.22s ease;
}

.page-about .ab-ver[open] {
  border-color: var(--line-strong);
}

.page-about .ab-ver__head {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 14px 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .ab-ver__head:focus-visible {
  outline: 2px solid var(--cyan-500);
  outline-offset: -2px;
}

.page-about .ab-ver__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--r-sm);
  background: var(--paper);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 700;
}

.page-about .ab-ver__title {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--fog);
}

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

.page-about .ab-ver__cue {
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cyan-500);
  border-bottom: 2px solid var(--cyan-500);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.24s ease;
}

.page-about .ab-ver[open] .ab-ver__cue {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-about .ab-ver__body {
  padding: 0 16px 18px;
  border-top: 1px dashed var(--line-soft);
  margin-top: 2px;
  padding-top: 14px;
}

.page-about .ab-ver__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--fog);
  opacity: 0.88;
}

/* ---------- moves ---------- */
.page-about .ab-moves__grid {
  display: grid;
  gap: 14px;
  margin-bottom: var(--ab-gap-lg);
}

.page-about .ab-move {
  position: relative;
  padding: 20px 18px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(16, 44, 70, 0.9), rgba(11, 34, 57, 0.72));
}

.page-about .ab-move__no {
  display: block;
  font-size: 13px;
  color: var(--cyan-300);
  margin-bottom: 10px;
}

.page-about .ab-move__title {
  margin: 0 0 10px;
  font-size: 17px;
  line-height: 1.45;
  color: var(--fog);
}

.page-about .ab-move p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- team ---------- */
.page-about .ab-team__inner {
  display: grid;
  gap: var(--ab-gap-md);
}

.page-about .ab-team__lead p {
  margin: 14px 0 0;
  color: var(--fog);
  opacity: 0.88;
  line-height: 1.8;
}

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

.page-about .ab-line {
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: var(--surface-1);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan-500);
}

.page-about .ab-line--content {
  border-left-color: var(--cyan-500);
}

.page-about .ab-line--ux {
  border-left-color: var(--orange-500);
}

.page-about .ab-line--support {
  border-left-color: var(--mist);
}

.page-about .ab-line__title {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--fog);
}

.page-about .ab-line p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .ab-cadence {
  padding: 18px;
  border-radius: var(--r-lg);
  border: 1px dashed var(--line-strong);
  background: rgba(53, 224, 208, 0.05);
}

.page-about .ab-cadence__label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--cyan-300);
}

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

.page-about .ab-cadence__list li {
  font-size: 14px;
  line-height: 1.6;
  color: var(--fog);
  padding-left: 16px;
  position: relative;
}

.page-about .ab-cadence__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange-500);
}

.page-about .ab-cadence__list strong {
  color: var(--cyan-300);
  margin-right: 6px;
  font-weight: 700;
}

/* ---------- library ---------- */
.page-about .ab-lib__inner {
  display: grid;
  gap: var(--ab-gap-md);
}

.page-about .ab-lib__text p {
  margin: 14px 0 0;
  color: var(--fog);
  opacity: 0.88;
  line-height: 1.8;
}

.page-about .ab-lib__clusters {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .ab-lib__go {
  margin-top: 20px;
}

.page-about .ab-lib .ab-figure {
  margin-bottom: 0;
}

/* ---------- next ---------- */
.page-about .ab-next__inner {
  display: grid;
  gap: var(--ab-gap-md);
  padding: clamp(22px, 4vw, 38px);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(16, 44, 70, 0.95), rgba(6, 24, 38, 0.9));
  border: 1px solid var(--line-soft);
}

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

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

.page-about .ab-next__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: rgba(53, 224, 208, 0.06);
  border: 1px solid var(--line-soft);
}

.page-about .ab-next__no {
  font-size: 12px;
  color: var(--orange-300);
  padding-top: 3px;
}

.page-about .ab-next__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--fog);
}

/* ---------- go ---------- */
.page-about .ab-go__inner {
  display: grid;
  gap: 16px;
  padding: clamp(24px, 4vw, 44px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(60% 80% at 85% 10%, rgba(255, 122, 61, 0.16), transparent 68%),
    radial-gradient(50% 70% at 10% 90%, rgba(53, 224, 208, 0.14), transparent 70%),
    var(--surface-2);
}

.page-about .ab-go__title {
  margin: 0;
  max-width: 26ch;
  line-height: 1.35;
}

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

.page-about .ab-go__links .spk-btn {
  min-height: 44px;
}

/* ---------- responsive ---------- */
@media (min-width: 760px) {
  .page-about .ab-moves__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .ab-ver__head {
    padding: 18px 22px;
    gap: 14px;
  }

  .page-about .ab-ver__title {
    font-size: 17px;
  }

  .page-about .ab-ver__tag {
    display: inline-flex;
  }

  .page-about .ab-ver__body {
    padding-left: 84px;
    padding-right: 24px;
  }

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

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

  .page-about .ab-figure--split {
    max-width: 66%;
    margin-left: auto;
  }
}

@media (min-width: 960px) {
  .page-about .ab-hero__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    column-gap: clamp(24px, 4vw, 56px);
    align-items: end;
  }

  .page-about .ab-hero__text {
    grid-column: 1;
  }

  .page-about .ab-hero__art {
    grid-column: 2;
    justify-self: end;
    max-width: 340px;
    margin: 0;
  }

  .page-about .ab-hero__facts {
    grid-column: 1 / -1;
    margin-top: 20px;
  }

  .page-about .ab-origin__inner {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-about .ab-origin__plates {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .page-about .ab-tl {
    grid-template-columns: var(--ab-rail-w) minmax(0, 1fr);
    column-gap: clamp(22px, 3vw, 40px);
    align-items: start;
  }

  .page-about .ab-tl__rail {
    position: sticky;
    top: 96px;
    border-radius: var(--r-lg);
    padding: 16px 14px;
  }

  .page-about .ab-tl__note {
    writing-mode: vertical-rl;
    letter-spacing: 0.4em;
    padding: 0 0 14px 2px;
    transform: rotate(180deg);
    height: 108px;
    margin-left: 2px;
    border-left: 1px solid var(--line-soft);
  }

  .page-about .ab-tl__dots {
    flex-direction: column;
    overflow: visible;
  }

  .page-about .ab-tl__dot {
    width: 100%;
    justify-content: flex-start;
    padding-left: 18px;
  }

  .page-about .ab-tl__stream {
    gap: 16px;
  }

  .page-about .ab-tl__stream .ab-ver:nth-child(even) {
    margin-left: clamp(20px, 4vw, 56px);
  }

  .page-about .ab-tl__stream .ab-ver:nth-child(3n) {
    margin-right: clamp(10px, 2vw, 28px);
  }

  .page-about .ab-team__inner {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    column-gap: clamp(24px, 4vw, 48px);
  }

  .page-about .ab-team__lead {
    grid-row: 1 / span 2;
  }

  .page-about .ab-cadence {
    grid-column: 2;
  }

  .page-about .ab-lib__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    column-gap: clamp(24px, 4vw, 52px);
    align-items: start;
  }

  .page-about .ab-next__inner {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    column-gap: clamp(24px, 4vw, 52px);
    align-items: start;
  }

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

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

  .page-about .ab-go__inner .spk-eyebrow {
    grid-column: 1 / -1;
    margin-bottom: 4px;
  }
}
<<<PAGE_CSS_END>>>