.page-about {
  position: relative;
  overflow-x: hidden;
  color: var(--im-text);
  background:
    radial-gradient(120% 58% at 88% -6%, rgba(139, 92, 255, .16), transparent 62%),
    radial-gradient(88% 44% at 2% 4%, rgba(34, 224, 255, .10), transparent 60%),
    var(--im-ink);
  padding-bottom: 8px;
}

.page-about .im-crumbs {
  padding-top: 20px;
}

/* ---------- HERO ---------- */
.page-about .ab-hero {
  position: relative;
  padding: 36px 0 52px;
  isolation: isolate;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -80px;
  right: -18%;
  width: min(780px, 108vw);
  height: 470px;
  background: linear-gradient(135deg, rgba(34, 224, 255, .18), rgba(139, 92, 255, .09) 52%, transparent 76%);
  clip-path: polygon(14% 0, 100% 0, 100% 74%, 0 100%);
  pointer-events: none;
}

.page-about .ab-hero__inner {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-about .ab-hero__title {
  margin: 12px 0 0;
  font-size: var(--im-fs-28);
  line-height: 1.22;
  letter-spacing: -.02em;
  font-weight: 800;
}

.page-about .ab-hero__title::after {
  content: "";
  display: block;
  width: 68px;
  height: 4px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--im-cyan), var(--im-purple));
}

.page-about .ab-hero__copy .im-lede {
  margin-top: 20px;
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .ab-hero__panel {
  position: relative;
  padding: 22px 20px 18px;
  border: 1px solid var(--im-line);
  border-left: 3px solid var(--im-cyan);
  background:
    linear-gradient(165deg, rgba(14, 20, 48, .95), rgba(5, 6, 11, .88));
  box-shadow: 0 26px 60px -46px rgba(34, 224, 255, .7);
}

.page-about .ab-hero__panel::after {
  content: "";
  position: absolute;
  inset: auto 0 0 auto;
  width: 46px;
  height: 46px;
  background:
    linear-gradient(90deg, rgba(34, 224, 255, .35) 1px, transparent 1px) 0 0 / 11px 11px,
    linear-gradient(180deg, rgba(34, 224, 255, .35) 1px, transparent 1px) 0 0 / 11px 11px;
  opacity: .5;
  pointer-events: none;
}

.page-about .ab-facts {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .ab-facts li {
  display: grid;
  grid-template-columns: 74px 1fr;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--im-line-2);
}

.page-about .ab-facts li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .ab-facts__num {
  font-size: var(--im-fs-21);
  color: var(--im-cyan);
  letter-spacing: -.01em;
}

.page-about .ab-facts__key {
  font-size: var(--im-fs-13);
  color: var(--im-muted);
  line-height: 1.6;
}

.page-about .ab-hero__stamp {
  margin: 16px 0 0;
  font-size: var(--im-fs-12);
  color: var(--im-muted);
  line-height: 1.7;
  border-top: 1px solid var(--im-line-2);
  padding-top: 12px;
}

/* ---------- SECTION SHELL ---------- */
.page-about .ab-section {
  position: relative;
  padding: 46px 0;
}

.page-about .ab-section--tint {
  background: linear-gradient(180deg, rgba(6, 43, 42, .55), rgba(6, 43, 42, .14) 72%, transparent);
  border-top: 1px solid var(--im-line-2);
  border-bottom: 1px solid var(--im-line-2);
}

.page-about .ab-section--deep {
  background:
    linear-gradient(150deg, rgba(58, 15, 34, .62), rgba(14, 20, 48, .42) 58%, transparent 88%);
  border-top: 1px solid var(--im-line-2);
  border-bottom: 1px solid var(--im-line-2);
}

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

.page-about .ab-rail {
  position: relative;
}

.page-about .ab-rail::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin-top: 14px;
  background: linear-gradient(90deg, var(--im-cyan), transparent);
}

.page-about .ab-h2 {
  margin: 0 0 16px;
  font-size: var(--im-fs-21);
  line-height: 1.35;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--im-text);
}

.page-about .ab-h3 {
  margin: 30px 0 12px;
  font-size: var(--im-fs-17);
  line-height: 1.5;
  letter-spacing: -.005em;
  font-weight: 700;
  color: var(--im-cyan);
}

.page-about .ab-body > p {
  margin: 0 0 14px;
  font-size: var(--im-fs-15);
  line-height: 1.8;
  color: var(--im-text);
  max-width: 62ch;
}

.page-about .ab-body > p a {
  color: var(--im-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 255, .5);
}

.page-about .ab-body > p a:hover {
  border-bottom-color: var(--im-cyan);
}

/* ---------- CATALOG GRID ---------- */
.page-about .ab-catalog {
  margin: 26px 0 8px;
  padding: 20px 18px;
  border: 1px solid var(--im-line);
  background: rgba(5, 6, 11, .55);
  display: grid;
  gap: 22px;
}

.page-about .ab-catalog__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px;
  font-family: var(--im-font-serif);
  font-size: var(--im-fs-13);
  letter-spacing: .08em;
  color: var(--im-muted);
}

.page-about .ab-dot {
  width: 8px;
  height: 8px;
  flex: none;
  transform: rotate(45deg);
}

.page-about .ab-dot--cyan { background: var(--im-cyan); }
.page-about .ab-dot--purple { background: var(--im-purple); }
.page-about .ab-dot--orange { background: var(--im-orange); }
.page-about .ab-dot--paper { background: var(--im-paper); }

.page-about .ab-cells {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(104px, 1fr));
  gap: 6px;
}

.page-about .ab-cell {
  position: relative;
  display: grid;
  gap: 3px;
  padding: 9px 10px 10px;
  border: 1px solid var(--im-line-2);
  background: rgba(14, 20, 48, .55);
  transition: transform .28s var(--im-ease), border-color .28s var(--im-ease), box-shadow .28s var(--im-ease), background-color .28s var(--im-ease);
}

.page-about .ab-cell__idx {
  font-size: var(--im-fs-12);
  color: var(--im-muted);
  letter-spacing: .06em;
}

.page-about .ab-cell__name {
  font-size: var(--im-fs-13);
  line-height: 1.4;
  color: var(--im-text);
}

.page-about .ab-cell:hover {
  transform: translateY(-3px);
  border-color: rgba(34, 224, 255, .55);
  background: rgba(34, 224, 255, .08);
  box-shadow: 0 14px 28px -20px rgba(34, 224, 255, .9);
}

.page-about .ab-cell:hover .ab-cell__idx {
  color: var(--im-cyan);
}

/* ---------- MEDIA ---------- */
.page-about .ab-media {
  margin: 26px 0 10px;
}

.page-about .ab-media .im-media__frame {
  border: 1px solid var(--im-line);
}

.page-about .ab-media--tall {
  margin-top: 0;
}

/* ---------- FILTER ---------- */
.page-about .ab-filter {
  margin-bottom: 16px;
}

/* ---------- TEAM TAGS ---------- */
.page-about .ab-groups {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--im-line-2);
}

.page-about .ab-tags {
  list-style: none;
  margin: 0;
  padding: 4px 2px 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .ab-tag {
  flex: 1 1 260px;
  max-width: 100%;
  padding: 16px 16px 18px;
  background: var(--im-paper);
  color: #10131f;
  border: 1px solid rgba(16, 19, 31, .18);
  box-shadow: 4px 5px 0 rgba(5, 6, 11, .6);
  transition: transform .3s var(--im-ease), box-shadow .3s var(--im-ease);
}

.page-about .ab-tag--a { transform: rotate(-.7deg); }
.page-about .ab-tag--b { transform: rotate(.6deg); }
.page-about .ab-tag--c { transform: rotate(-.3deg); }
.page-about .ab-tag--d { transform: rotate(.9deg); }
.page-about .ab-tag--e { transform: rotate(-.8deg); }
.page-about .ab-tag--f { transform: rotate(.4deg); }

.page-about .ab-tag:hover {
  transform: rotate(0deg) translateY(-4px);
  box-shadow: 5px 11px 0 rgba(34, 224, 255, .32);
}

.page-about .ab-tag__name {
  margin: 0 0 8px;
  font-size: var(--im-fs-15);
  font-weight: 800;
  letter-spacing: -.01em;
  color: #05060b;
  border-bottom: 2px solid var(--im-orange);
  display: inline-block;
  padding-bottom: 3px;
}

.page-about .ab-tag__desc {
  margin: 0;
  font-size: var(--im-fs-13);
  line-height: 1.72;
  color: #2b3044;
}

/* ---------- TIMELINE ---------- */
.page-about .ab-history {
  display: grid;
  gap: 24px;
  margin-top: 8px;
}

.page-about .ab-stages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  position: relative;
}

.page-about .ab-stages::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--im-cyan), var(--im-purple) 52%, transparent);
  opacity: .6;
}

.page-about .ab-stage {
  position: relative;
  margin-left: 22px;
  padding: 16px 18px 18px;
  border: 1px solid var(--im-line);
  background: linear-gradient(160deg, rgba(14, 20, 48, .92), rgba(5, 6, 11, .8));
  transition: border-color .3s var(--im-ease), transform .3s var(--im-ease), box-shadow .3s var(--im-ease);
}

.page-about .ab-stage::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 22px;
  width: 11px;
  height: 11px;
  transform: rotate(45deg);
  background: var(--im-ink);
  border: 1px solid var(--im-cyan);
}

.page-about .ab-stage:hover {
  transform: translateX(4px);
  border-color: rgba(34, 224, 255, .55);
  box-shadow: -6px 0 26px -18px rgba(34, 224, 255, .95);
}

.page-about .ab-stage:hover::before {
  background: var(--im-cyan);
}

.page-about .ab-stage__year {
  margin: 0;
  font-size: var(--im-fs-12);
  letter-spacing: .1em;
  color: var(--im-orange);
}

.page-about .ab-stage__title {
  margin: 8px 0 8px;
  font-size: var(--im-fs-17);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--im-text);
}

.page-about .ab-stage__text {
  margin: 0;
  font-size: var(--im-fs-13);
  line-height: 1.78;
  color: var(--im-muted);
}

/* ---------- COOPERATION ---------- */
.page-about .ab-coop {
  margin-top: 22px;
  align-items: start;
}

.page-about .ab-coop__text .ab-h3 {
  margin-top: 0;
}

.page-about .ab-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ab-list li {
  position: relative;
  padding-left: 16px;
  font-size: var(--im-fs-13);
  line-height: 1.78;
  color: var(--im-text);
  border-left: 2px solid rgba(139, 92, 255, .5);
}

.page-about .ab-list strong {
  color: var(--im-purple);
}

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

.page-about .ab-media--coop {
  margin-top: 0;
}

/* ---------- EXPERIENCE CARDS ---------- */
.page-about .ab-cards {
  display: grid;
  gap: 14px;
  margin: 24px 0 20px;
}

.page-about .ab-xcard {
  position: relative;
  overflow: hidden;
}

.page-about .ab-xcard::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 88px;
  height: 88px;
  background: repeating-linear-gradient(45deg, rgba(5, 6, 11, .12) 0 2px, transparent 2px 7px);
  pointer-events: none;
}

.page-about .ab-xcard .im-card__label {
  color: #3f4considered;
}

/* ---------- ROUTES ---------- */
.page-about .ab-routes {
  padding: 46px 0 60px;
  border-top: 1px solid var(--im-line-2);
  background: linear-gradient(180deg, transparent, rgba(14, 20, 48, .5));
}

.page-about .ab-routes__title {
  margin: 0 0 20px;
  font-family: var(--im-font-serif);
  font-size: var(--im-fs-17);
  letter-spacing: .12em;
  font-weight: 400;
  color: var(--im-muted);
}

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

.page-about .ab-route__link {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 4px 12px;
  padding: 15px 16px;
  border: 1px solid var(--im-line-2);
  background: rgba(14, 20, 48, .5);
  text-decoration: none;
  transition: border-color .3s var(--im-ease), transform .3s var(--im-ease), background-color .3s var(--im-ease);
}

.page-about .ab-route__link:hover {
  transform: translateX(5px);
  border-color: rgba(255, 138, 61, .6);
  background: rgba(255, 138, 61, .07);
}

.page-about .ab-route__id {
  grid-row: span 2;
  align-self: center;
  font-size: var(--im-fs-17);
  color: var(--im-orange);
}

.page-about .ab-route__name {
  font-size: var(--im-fs-15);
  font-weight: 700;
  color: var(--im-text);
}

.page-about .ab-route__desc {
  font-size: var(--im-fs-13);
  line-height: 1.6;
  color: var(--im-muted);
}

/* ---------- RESPONSIVE ---------- */
@media (min-width: 720px) {
  .page-about .ab-hero {
    padding: 52px 0 68px;
  }

  .page-about .ab-hero__title {
    font-size: var(--im-fs-40);
  }

  .page-about .ab-h2 {
    font-size: var(--im-fs-28);
  }

  .page-about .ab-section {
    padding: 62px 0;
  }

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

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

@media (min-width: 900px) {
  .page-about .ab-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .ab-grid {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 40px;
  }

  .page-about .ab-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .ab-history {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .ab-hero__title {
    font-size: var(--im-fs-64);
  }

  .page-about .ab-h2 {
    font-size: var(--im-fs-28);
  }

  .page-about .ab-section {
    padding: 74px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-cell,
  .page-about .ab-tag,
  .page-about .ab-stage,
  .page-about .ab-route__link {
    transition: none;
  }
}