.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 44px) 0 clamp(32px, 5vw, 64px);
  border-bottom: 2px solid var(--line);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(46, 66, 87, 0.45) 1px, transparent 1px);
  background-size: clamp(56px, 8vw, 116px) 100%;
  opacity: 0.55;
  pointer-events: none;
}

.page-about .ab-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 9.5vw, 6.4rem);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: -0.02em;
}

.page-about .ab-hero__accent {
  color: var(--amber);
  font-style: normal;
}

.page-about .ab-hero__body {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .ab-hero__lede {
  max-width: 58ch;
  margin: 0;
}

.page-about .ab-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: 0;
}

.page-about .ab-fact {
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.page-about .ab-fact__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .ab-fact__value {
  margin: 6px 0 0;
  font-size: 15px;
  color: var(--white);
}

.page-about .ab-origin__grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.page-about .ab-origin__text p {
  margin: 0 0 1em;
}

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

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

.page-about .ab-versions__grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-about .ab-years__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-about .ab-years__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-year {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid var(--line);
  background: var(--ink-750);
  color: var(--muted);
  text-decoration: none;
  transition: border-color 180ms var(--ease), color 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .ab-year:hover,
.page-about .ab-year:focus-visible {
  border-color: var(--cyan);
  color: var(--white);
  transform: translate(-2px, -2px);
}

.page-about .ab-year__no {
  font-size: 16px;
  font-weight: 700;
  color: var(--amber);
}

.page-about .ab-year__yr {
  font-size: 12px;
}

.page-about .ab-versions__body {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
}

.page-about .ab-version {
  position: relative;
  padding: 0 0 4px 22px;
  border-left: 2px solid var(--line);
  scroll-margin-top: 96px;
}

.page-about .ab-version::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--ink-800);
  border: 2px solid var(--cyan);
}

.page-about .ab-version__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  margin-bottom: 10px;
}

.page-about .ab-version__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .ab-version p {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.7;
}

.page-about .ab-version__media {
  margin: 18px 0 0;
}

.page-about .ab-flow {
  background-image:
    linear-gradient(to right, rgba(46, 66, 87, 0.32) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 66, 87, 0.32) 1px, transparent 1px);
  background-size: 96px 96px;
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
}

.page-about .ab-flow__steps {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-step {
  padding: clamp(18px, 2.4vw, 26px);
  border: 2px solid var(--line);
  background: rgba(6, 16, 29, 0.86);
  box-shadow: var(--shadow-soft);
}

.page-about .ab-step__no {
  display: block;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
}

.page-about .ab-step__name {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

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

.page-about .ab-flow__note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 12px 0 12px 16px;
  border-left: 3px solid var(--cyan);
  max-width: 68ch;
  color: var(--white);
  font-size: 14px;
  line-height: 1.7;
}

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

.page-about .ab-team__card {
  padding: clamp(16px, 2.2vw, 22px);
  border: 2px solid var(--line);
  background: var(--ink-750);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-about .ab-team__card:hover,
.page-about .ab-team__card:focus-within {
  border-color: var(--cyan);
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-soft);
}

.page-about .ab-team__num {
  display: block;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .ab-team__role {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
}

.page-about .ab-team__card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .ab-region {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  margin-top: clamp(24px, 4vw, 44px);
  align-items: center;
}

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

.page-about .ab-region__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3.2vw, 1.7rem);
  font-weight: 700;
  line-height: 1.25;
}

.page-about .ab-region__text p {
  margin: 0 0 1em;
  color: var(--muted);
  line-height: 1.7;
  max-width: 60ch;
}

.page-about .ab-trust__grid {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  align-items: start;
}

.page-about .ab-cert {
  padding: clamp(20px, 3vw, 30px);
  border-left: 4px solid var(--cyan);
}

.page-about .ab-cert__eyebrow {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .ab-cert__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  font-weight: 700;
  line-height: 1.35;
}

.page-about .ab-cert__text {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .ab-rhythm__lead {
  margin: 0 0 12px;
  color: var(--white);
  font-size: 15px;
}

.page-about .ab-rhythm__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .ab-rhythm__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .ab-rhythm__when {
  font-size: 13px;
  color: var(--amber);
  letter-spacing: 0.04em;
}

.page-about .ab-rhythm__what {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .ab-rhythm__foot {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--white);
}

.page-about .ab-cta__inner {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  padding: clamp(22px, 4vw, 40px);
  border: 2px solid var(--cyan);
  background: var(--ink-750);
  box-shadow: var(--shadow-hard);
  align-items: center;
}

.page-about .ab-cta__quote {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 4vw, 2.1rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .ab-cta__sub {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
  max-width: 50ch;
}

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

@media (min-width: 720px) {
  .page-about .ab-flow__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .ab-rhythm__item {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 1024px) {
  .page-about .ab-hero__body {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }

  .page-about .ab-origin__grid {
    grid-template-columns: 7fr 5fr;
  }

  .page-about .ab-versions__grid {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 44px;
  }

  .page-about .ab-years {
    position: sticky;
    top: calc(var(--strip-h) + 24px);
    align-self: start;
  }

  .page-about .ab-years__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 8px;
  }

  .page-about .ab-year {
    justify-content: space-between;
    width: 100%;
  }

  .page-about .ab-versions__body {
    gap: 34px;
  }

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

  .page-about .ab-region {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .page-about .ab-trust__grid {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
  }

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