.page-about {
  --ab-green: var(--color-prairie-green);
  --ab-blue: var(--color-deep-blue);
  --ab-gold: var(--color-gold);
  --ab-sand: var(--color-sand);
  --ab-orange: var(--color-desert-orange);
  --ab-ink-soft: #5f7084;
  --ab-timeline-node: 28px;
}

.page-about .ab-hero {
  padding: 28px 0 0;
  background: linear-gradient(180deg, var(--color-light-gray) 0%, var(--color-white) 100%);
}

.page-about .ab-hero__copy {
  padding: 12px 0 28px;
}

.page-about .ab-hero h1 {
  font-family: var(--font-title);
  font-size: 32px;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--color-deep-blue);
  margin: 18px 0 18px;
}

.page-about .ab-hero__lead {
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-ink);
  max-width: 760px;
  margin: 0;
}

.page-about .ab-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .ab-hero__stats li {
  background: var(--color-white);
  border: 1px solid #e6ebf2;
  border-radius: var(--radius-md);
  padding: 16px 14px;
}

.page-about .ab-hero__stats strong {
  display: block;
  font-family: var(--font-title);
  font-size: 26px;
  line-height: 1.2;
  color: var(--color-deep-blue);
}

.page-about .ab-hero__stats span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--ab-ink-soft);
}

.page-about .ab-hero__visual {
  margin-top: 8px;
}

.page-about .ab-hero__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.page-about .ab-story {
  background: var(--color-white);
}

.page-about .ab-story__grid {
  display: grid;
  gap: 32px;
}

.page-about .ab-kicker {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-dark-gold);
  background: rgba(212, 160, 23, 0.14);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  margin-bottom: 14px;
}

.page-about .ab-story h2,
.page-about .ab-section-head h2 {
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.3;
  margin: 0 0 16px;
  color: var(--color-deep-blue);
}

.page-about .ab-story p,
.page-about .ab-culture p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-ink);
}

.page-about .ab-story__principle {
  margin: 28px 0 0;
  padding: 20px 22px;
  background: var(--color-sand);
  border-left: 4px solid var(--color-gold);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.page-about .ab-story__principle p {
  margin: 0;
  font-family: var(--font-title);
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-deep-blue);
}

.page-about .ab-story__aside {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .ab-story__card {
  background: var(--color-sand);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
}

.page-about .ab-story__num {
  display: block;
  font-family: var(--font-title);
  font-size: 24px;
  line-height: 1.2;
  color: var(--color-deep-blue);
}

.page-about .ab-story__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--ab-ink-soft);
}

.page-about .ab-timeline {
  position: relative;
  overflow: hidden;
  padding: 64px 0;
  background: linear-gradient(165deg, var(--color-deep-blue) 0%, #123a5f 100%);
  color: var(--color-white);
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.page-about .ab-timeline::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -120px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(212, 160, 23, 0.18), transparent 65%);
  pointer-events: none;
}

.page-about .ab-timeline__decor {
  display: none;
  position: absolute;
  top: 120px;
  right: -30px;
  width: 260px;
  height: 260px;
  opacity: 0.16;
  pointer-events: none;
}

.page-about .ab-timeline .ab-section-head {
  position: relative;
  z-index: 1;
}

.page-about .ab-timeline .ab-kicker {
  background: rgba(212, 160, 23, 0.16);
  color: var(--color-gold);
}

.page-about .ab-timeline h2 {
  color: var(--color-white);
}

.page-about .ab-section-head__lead {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ab-ink-soft);
  margin: 0 0 32px;
}

.page-about .ab-timeline .ab-section-head__lead {
  color: rgba(255, 255, 255, 0.72);
}

.page-about .ab-timeline__wrap {
  position: relative;
  margin-top: 8px;
}

.page-about .ab-timeline__rail {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 13px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold) 0%, rgba(212, 160, 23, 0.3) 100%);
  border-radius: var(--radius-pill);
  transform: translateX(-1px);
}

.page-about .ab-timeline__item {
  position: relative;
  padding-left: 52px;
  margin-bottom: 24px;
}

.page-about .ab-timeline__node {
  position: absolute;
  left: 0;
  top: 20px;
  width: var(--ab-timeline-node);
  height: var(--ab-timeline-node);
  border-radius: 50%;
  background: var(--color-deep-blue);
  border: 2px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  transition: background var(--ease), color var(--ease), transform var(--ease);
}

.page-about .ab-timeline__node svg {
  width: 14px;
  height: 14px;
}

.page-about .ab-timeline__item:hover .ab-timeline__node,
.page-about .ab-timeline__item:focus-within .ab-timeline__node {
  background: var(--color-gold);
  color: var(--color-deep-blue);
  transform: scale(1.08);
}

.page-about .ab-timeline__card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: transform var(--ease), border-color var(--ease), background var(--ease);
}

.page-about .ab-timeline__item:hover .ab-timeline__card,
.page-about .ab-timeline__item:focus-within .ab-timeline__card {
  transform: translateX(4px);
  border-color: var(--color-gold);
  background: rgba(255, 255, 255, 0.1);
}

.page-about .ab-timeline__year {
  display: block;
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-gold);
}

.page-about .ab-timeline__card h3 {
  font-size: 20px;
  line-height: 1.4;
  margin: 6px 0 8px;
  color: var(--color-white);
}

.page-about .ab-timeline__card p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
  margin: 0;
}

.page-about .ab-timeline__media {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.18);
}

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

.page-about .ab-timeline__card--media {
  display: grid;
  gap: 16px;
}

.page-about .ab-versions {
  background: var(--color-light-gray);
}

.page-about .ab-versions__cards {
  display: grid;
  gap: 20px;
  margin-top: 36px;
}

.page-about .ab-versions__card {
  background: var(--color-white);
  border: 1px solid #e6ebf2;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: transform var(--ease), box-shadow var(--ease);
}

.page-about .ab-versions__card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(11, 42, 74, 0.13);
}

.page-about .ab-versions__card--speed {
  background: linear-gradient(180deg, var(--color-white) 0%, var(--color-sand) 100%);
  border-color: rgba(212, 160, 23, 0.3);
}

.page-about .ab-versions__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.page-about .ab-versions__head h3 {
  font-family: var(--font-title);
  font-size: 22px;
  margin: 0;
  color: var(--color-deep-blue);
}

.page-about .ab-versions__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-versions__list li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-ink);
}

.page-about .ab-versions__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-prairie-green);
}

.page-about .ab-versions__card--speed .ab-versions__list li::before {
  background: var(--color-desert-orange);
}

.page-about .ab-versions__firstrow {
  margin-top: 32px;
  background: var(--color-deep-blue);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  color: var(--color-white);
}

.page-about .ab-versions__firstrow-label {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.68);
  margin-bottom: 14px;
}

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

.page-about .ab-versions__pill {
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
}

.page-about .ab-versions__pill--active {
  background: var(--color-gold);
  color: var(--color-deep-blue);
}

.page-about .ab-versions__note {
  margin-top: 28px;
  border-left: 4px solid var(--color-desert-orange);
  background: var(--color-white);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 22px;
  box-shadow: var(--shadow-card);
}

.page-about .ab-versions__note h3 {
  font-family: var(--font-title);
  font-size: 20px;
  margin: 0 0 8px;
  color: var(--color-deep-blue);
}

.page-about .ab-versions__note p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-ink);
  margin: 0;
}

.page-about .ab-culture {
  background: var(--color-sand);
}

.page-about .ab-culture__layout {
  display: grid;
  gap: 28px;
}

.page-about .ab-section-head--left {
  margin-bottom: 8px;
}

.page-about .ab-culture__visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.page-about .ab-explore {
  background: var(--color-white);
}

.page-about .ab-explore__inner {
  background: linear-gradient(120deg, var(--color-deep-blue) 0%, #123a5f 100%);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: grid;
  gap: 24px;
  color: var(--color-white);
}

.page-about .ab-explore__copy .ab-kicker {
  background: rgba(212, 160, 23, 0.16);
  color: var(--color-gold);
}

.page-about .ab-explore__copy h2 {
  font-family: var(--font-title);
  font-size: 28px;
  line-height: 1.3;
  margin: 0 0 10px;
  color: var(--color-white);
}

.page-about .ab-explore__copy p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
  margin: 0;
}

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

.page-about .ab-explore__links .btn--ghost {
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--color-white);
}

.page-about .ab-explore__links .btn--ghost:hover,
.page-about .ab-explore__links .btn--ghost:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
}

.page-about .ab-explore__links .btn--ghost:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

@media (min-width: 720px) {
  .page-about .ab-hero {
    padding-top: 40px;
  }

  .page-about .ab-hero h1 {
    font-size: 42px;
  }

  .page-about .ab-hero__lead {
    font-size: 18px;
  }

  .page-about .ab-hero__stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
  }

  .page-about .ab-hero__stats strong {
    font-size: 30px;
  }

  .page-about .ab-story__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-story__aside {
    grid-template-columns: repeat(2, 1fr);
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

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

  .page-about .ab-timeline__wrap {
    margin-left: 56px;
  }

  .page-about .ab-timeline__rail {
    left: 44px;
  }

  .page-about .ab-timeline__item {
    padding-left: 108px;
  }

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

  .page-about .ab-timeline__card--media {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 24px;
    align-items: center;
  }

  .page-about .ab-versions__cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .page-about .ab-versions__firstrow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .page-about .ab-versions__firstrow-label {
    margin-bottom: 0;
    max-width: 260px;
  }

  .page-about .ab-culture__layout {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .ab-explore__inner {
    padding: 44px 40px;
    grid-template-columns: 1.4fr 1fr;
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 1080px) {
  .page-about .ab-hero h1 {
    font-size: 46px;
    max-width: 840px;
  }

  .page-about .ab-hero__copy {
    padding-bottom: 36px;
  }

  .page-about .ab-timeline {
    padding: 88px 0;
  }

  .page-about .ab-timeline__item {
    padding-left: 120px;
  }

  .page-about .ab-section-head {
    max-width: 720px;
  }

  .page-about .ab-section-head h2 {
    font-size: 34px;
  }

  .page-about .ab-versions {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .page-about .ab-culture {
    padding-top: 88px;
    padding-bottom: 88px;
  }
}