.page-about {
  --ab-gap: clamp(56px, 9vw, 120px);
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: hidden;
}

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

/* ---------- Hero ---------- */
.page-about .ab-hero {
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(32px, 5vw, 56px);
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.page-about .ab-hero__eyebrow {
  margin-top: 22px;
  color: var(--cyan-lt);
}

.page-about .ab-hero__title {
  margin-top: 14px;
  font-size: clamp(33px, 6.6vw, 74px);
  line-height: 1.03;
  font-weight: 900;
  letter-spacing: -0.012em;
  max-width: 16em;
}

.page-about .ab-hero__lede {
  margin-top: 22px;
  max-width: 56ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--mist);
}

.page-about .ab-hero__facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 20px 0 0;
  border-top: 2px solid var(--edge);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 12px;
}

.page-about .ab-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .ab-hero__num {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-about .ab-hero__k {
  font-size: 13px;
  color: var(--mist);
}

.page-about .ab-hero__note {
  color: var(--mist);
  justify-self: start;
}

.page-about .ab-hero__fig {
  margin: var(--ab-gap) 0 0;
}

.page-about .ab-hero__fig .fig__frame {
  aspect-ratio: 7 / 4;
  border: 2px solid var(--edge);
  box-shadow: 0 8px 0 var(--edge);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-about .ab-hero__fig .fig__cap {
  margin-top: 14px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- Index ---------- */
.page-about .ab-index {
  padding-top: 8px;
}

.page-about .ab-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 2px solid var(--edge);
  border-left: 2px solid var(--edge);
}

.page-about .ab-index__item {
  border-right: 2px solid var(--edge);
  border-bottom: 2px solid var(--edge);
}

.page-about .ab-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 16px 14px;
  color: var(--paper);
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease;
}

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

.page-about .ab-index__txt {
  font-size: 14px;
  font-weight: 600;
}

.page-about .ab-index__link:hover,
.page-about .ab-index__link:focus-visible {
  background: var(--ink-700);
  color: var(--cyan-lt);
}

/* ---------- Section shell ---------- */
.page-about .ab-sec {
  margin-top: var(--ab-gap);
}

.page-about .ab-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding-bottom: clamp(28px, 4vw, 44px);
}

.page-about .ab-sec__head .chap-num {
  font-size: clamp(48px, 8vw, 108px);
  line-height: 0.8;
  color: var(--ink-700);
  -webkit-text-stroke: 1px var(--edge);
}

.page-about .ab-sec__title h2 {
  margin-top: 10px;
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.16;
  font-weight: 800;
  max-width: 20em;
}

.page-about .ab-sec__title .eyebrow {
  color: var(--cyan-lt);
}

/* ---------- 01 split ---------- */
.page-about .ab-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .ab-split__left {
  display: grid;
  gap: 18px;
}

.page-about .ab-path {
  padding: 24px 20px;
}

.page-about .ab-path__k {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-about .ab-path__h {
  margin: 10px 0 10px;
  font-size: 20px;
  font-weight: 800;
}

.page-about .ab-path__p {
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .ab-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid rgba(43, 240, 200, 0.35);
  padding-bottom: 2px;
  transition: color 160ms ease, border-color 160ms ease;
}

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

.page-about .ab-split__right {
  padding: 24px 20px;
  background: var(--ink-800);
  border: 2px solid var(--edge);
  box-shadow: 0 8px 0 var(--edge);
}

.page-about .ab-split__right .eyebrow {
  color: var(--cyan-lt);
}

.page-about .ab-desk__h {
  margin: 10px 0 18px;
  font-size: 19px;
  font-weight: 800;
}

.page-about .ab-desk {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
}

.page-about .ab-desk__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--edge);
}

.page-about .ab-desk__n {
  font-size: 12px;
  color: var(--orange);
  letter-spacing: 0.1em;
  padding-top: 3px;
}

.page-about .ab-desk__t {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-desk__d {
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 02 process ---------- */
.page-about .ab-process {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

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

.page-about .ab-process__fig .fig__frame {
  aspect-ratio: 3 / 2;
  border: 2px solid var(--edge);
  box-shadow: 0 8px 0 var(--edge);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-about .ab-process__fig .fig__cap {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .ab-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: abstep;
}

.page-about .ab-step {
  padding: 18px 0 18px 20px;
  border-left: 2px solid var(--edge);
  position: relative;
}

.page-about .ab-step::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 24px;
  width: 12px;
  height: 12px;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
}

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

.page-about .ab-step__h {
  margin: 8px 0 8px;
  font-size: 18px;
  font-weight: 800;
}

.page-about .ab-step__p {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
  max-width: 42ch;
}

.page-about .ab-step__meta {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

/* ---------- 03 stats ---------- */
.page-about .ab-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .ab-stat {
  padding: 22px 20px;
  border: 2px solid var(--edge);
  background: var(--ink-800);
  box-shadow: 0 8px 0 var(--edge);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.page-about .ab-stat:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 0 var(--edge);
  border-color: var(--cyan);
}

.page-about .ab-stat__num {
  font-size: clamp(30px, 4.2vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .ab-stat__plus {
  color: var(--orange);
  font-size: 0.7em;
  margin-left: 2px;
}

.page-about .ab-stat__k {
  margin-top: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-stat__d {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .ab-note-band {
  margin-top: 26px;
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
  border: 2px solid var(--edge);
  background: linear-gradient(115deg, var(--ink-700), var(--ink-800));
}

.page-about .ab-note-band__p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
  max-width: 48ch;
}

/* ---------- 04 timeline ---------- */
.page-about .ab-history__fig {
  margin: 0 0 32px;
  max-width: 380px;
}

.page-about .ab-history__fig .fig__frame {
  border: 2px solid var(--edge);
  box-shadow: 0 8px 0 var(--edge);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-about .ab-history__fig .fig__cap {
  margin-top: 12px;
  font-size: 13px;
  color: var(--mist);
}

.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  border-left: 2px solid var(--edge);
}

.page-about .ab-tl__item {
  position: relative;
  padding-bottom: 22px;
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 20px;
  width: 12px;
  height: 12px;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
  transition: background-color 200ms ease, box-shadow 200ms ease;
}

.page-about .ab-tl__item:hover::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(43, 240, 200, 0.18);
}

.page-about .ab-tl__year {
  display: block;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.page-about .ab-tl__card {
  padding: 20px 18px;
  transition: transform 200ms ease, border-color 200ms ease, box-shadow 200ms ease;
}

.page-about .ab-tl__item:hover .ab-tl__card {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: 0 4px 0 var(--edge);
}

.page-about .ab-tl__stage {
  font-size: 17px;
  font-weight: 800;
  color: var(--paper);
}

.page-about .ab-tl__body {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--mist);
}

.page-about .ab-tl__impact {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--edge);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--cyan-lt);
}

/* ---------- 05 team ---------- */
.page-about .ab-team__lede {
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .ab-bars {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-about .ab-bar__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .ab-bar__role {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .ab-bar__n {
  font-size: 15px;
  font-weight: 700;
}

.page-about .ab-bar__track {
  height: 12px;
  background: var(--ink-700);
  border: 1px solid var(--edge);
  overflow: hidden;
}

.page-about .ab-bar__fill {
  display: block;
  height: 100%;
  transition: filter 200ms ease;
}

.page-about .ab-bar:hover .ab-bar__fill {
  filter: brightness(1.25);
}

.page-about .ab-bar--cyan .ab-bar__n { color: var(--cyan); }
.page-about .ab-bar--cyan .ab-bar__fill { background: var(--cyan); }

.page-about .ab-bar--orange .ab-bar__n { color: var(--orange); }
.page-about .ab-bar--orange .ab-bar__fill { background: var(--orange); }

.page-about .ab-bar--violet .ab-bar__n { color: var(--violet); }
.page-about .ab-bar--violet .ab-bar__fill { background: var(--violet); }

.page-about .ab-bar__d {
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
  max-width: 52ch;
}

.page-about .ab-team__foot {
  margin-top: 30px;
  padding-top: 22px;
  border-top: 2px solid var(--edge);
}

.page-about .ab-team__footp {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 56ch;
}

/* ---------- 06 partners ---------- */
.page-about .ab-partner__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .ab-partner__col {
  padding: 22px 20px;
  border: 2px solid var(--edge);
  background: var(--ink-800);
}

.page-about .ab-partner__n {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-about .ab-partner__h {
  margin: 12px 0 10px;
  font-size: 17px;
  font-weight: 800;
}

.page-about .ab-partner__p {
  font-size: 13.8px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .ab-partner__strip {
  margin-top: 22px;
  padding: 32px 20px;
  border: 2px solid var(--edge);
  background: linear-gradient(140deg, var(--ink-700), var(--ink-800) 60%, var(--ink-900));
}

.page-about .ab-partner__quote {
  font-size: clamp(28px, 5.4vw, 58px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .ab-partner__sub {
  margin-top: 14px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 46ch;
}

.page-about .ab-partner__acts {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- reveal ---------- */
html[data-js="true"] .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 420ms ease, transform 420ms ease;
}

html[data-js="true"] .page-about [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-stat,
  .page-about .ab-tl__card,
  .page-about .ab-bar__fill {
    transition: none;
  }
  html[data-js="true"] .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

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

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

  .page-about .ab-index__link {
    padding: 20px 18px;
  }

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

  .page-about .ab-note-band {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 26px 28px;
  }

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

  .page-about .ab-tl {
    padding-left: 34px;
  }

  .page-about .ab-tl__item {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
    padding-bottom: 26px;
  }

  .page-about .ab-tl__item::before {
    left: -41px;
    top: 8px;
  }

  .page-about .ab-tl__year {
    margin-bottom: 0;
    padding-top: 2px;
    text-align: right;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 32px;
  }

  .page-about .ab-hero__note {
    justify-self: end;
    padding-top: 8px;
  }

  .page-about .ab-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-about .ab-process {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .ab-steps {
    padding-top: 6px;
  }

  .page-about .ab-partner__strip {
    padding: 44px 40px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px 32px;
    align-items: end;
  }

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

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

  .page-about .ab-partner__acts {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin-top: 0;
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 1100px) {
  .page-about .ab-hero__lede {
    max-width: 60ch;
  }

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

  .page-about .ab-tl__item {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 26px;
  }

  .page-about .ab-bars {
    gap: 26px;
  }

  .page-about .ab-history__fig {
    max-width: 440px;
  }
}