.page-about {
  --ab-rule: rgba(255, 255, 255, 0.12);
  --ab-rule-soft: rgba(255, 255, 255, 0.07);
  color: var(--text);
  background: var(--ink);
  overflow-x: hidden;
}

.page-about .ab-caption {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--text-dim);
}

.page-about .ab-sec-head {
  max-width: 62ch;
  margin-bottom: 30px;
}

.page-about .ab-sec-head__lede {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- hero ---------- */
.page-about .ab-hero {
  padding: 26px 0 0;
}

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

.page-about .ab-hero__title {
  margin: 16px 0 0;
  font-size: clamp(34px, 8.2vw, 62px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  background: linear-gradient(100deg, #FFFFFF 12%, #D9C8FF 52%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .ab-hero__lede {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--text-soft);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

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

/* ---------- figures strip ---------- */
.page-about .ab-figures {
  margin-top: 44px;
  border-top: 1px solid var(--ab-rule);
  border-bottom: 1px solid var(--ab-rule);
  background:
    linear-gradient(90deg, rgba(107, 60, 255, 0.14), rgba(45, 225, 194, 0.07) 46%, rgba(232, 180, 74, 0.12));
}

.page-about .ab-figures__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-figures__list li {
  padding: 20px 14px;
  border-bottom: 1px solid var(--ab-rule-soft);
}

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

.page-about .ab-figures__num {
  display: block;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
  letter-spacing: -0.01em;
}

.page-about .ab-figures__num i {
  font-style: normal;
  font-size: 13px;
  margin-left: 2px;
  color: var(--text-dim);
}

.page-about .ab-figures__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

/* ---------- timeline ---------- */
.page-about .ab-stages {
  padding-top: 58px;
}

.page-about .ab-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--purple), var(--cyan) 48%, var(--gold));
  opacity: 0.45;
}

.page-about .ab-timeline__item {
  position: relative;
  padding: 22px 0 26px;
  border-top: 1px solid var(--ab-rule);
}

.page-about .ab-timeline__item:first-child {
  border-top: 0;
  padding-top: 8px;
}

.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 30px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px var(--ink), 0 0 0 4px rgba(45, 225, 194, 0.34);
  transition: background 0.25s ease, box-shadow 0.25s ease;
}

.page-about .ab-timeline__item:hover::before {
  background: var(--gold);
  box-shadow: 0 0 0 3px var(--ink), 0 0 0 5px rgba(232, 180, 74, 0.4);
}

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

.page-about .ab-timeline__year .num {
  font-size: 22px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.01em;
}

.page-about .ab-timeline__phase {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-about .ab-timeline__body {
  margin-top: 12px;
}

.page-about .ab-timeline__body .h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--text);
}

.page-about .ab-timeline__body p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .ab-timeline__points {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .ab-timeline__points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-about .ab-timeline__points li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--purple);
}

.page-about .ab-stages__media {
  margin: 40px 0 0;
}

/* ---------- team ---------- */
.page-about .ab-team {
  padding-top: 58px;
  padding-bottom: 58px;
  border-top: 1px solid var(--ab-rule);
  border-bottom: 1px solid var(--ab-rule);
}

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

.page-about .ab-team__card {
  position: relative;
  overflow: hidden;
  padding: 24px 20px 22px;
}

.page-about .ab-team__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--purple), transparent 78%);
}

.page-about .ab-team__card--edit::before {
  background: linear-gradient(90deg, var(--cyan), transparent 78%);
}

.page-about .ab-team__card--visual::before {
  background: linear-gradient(90deg, var(--gold), transparent 78%);
}

.page-about .ab-team__card--support::before {
  background: linear-gradient(90deg, var(--coral), transparent 78%);
}

.page-about .ab-team__count {
  margin: 12px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.page-about .ab-team__count .num {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-right: 4px;
}

.page-about .ab-team__duties {
  margin: 16px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--ab-rule-soft);
  display: grid;
  gap: 9px;
}

.page-about .ab-team__duties li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-about .ab-team__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- ecosystem ---------- */
.page-about .ab-eco {
  padding-top: 58px;
}

.page-about .ab-eco__grid {
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-about .ab-eco__lede {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .ab-eco__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-eco__list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.page-about .ab-eco__item {
  padding: 16px 0;
  border-top: 1px solid var(--ab-rule);
}

.page-about .ab-eco__item:last-child {
  border-bottom: 1px solid var(--ab-rule);
}

.page-about .ab-eco__name {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-about .ab-eco__name .num {
  margin-left: 8px;
  font-size: 15px;
  color: var(--gold);
}

.page-about .ab-eco__item p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .ab-eco__body .btn {
  margin-top: 26px;
}

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

/* ---------- standards ---------- */
.page-about .ab-standards {
  padding-top: 58px;
  padding-bottom: 58px;
}

.page-about .ab-standards__list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(20, 26, 46, 0.16);
}

.page-about .ab-standards__item {
  padding: 22px 0;
  border-bottom: 1px solid rgba(20, 26, 46, 0.12);
}

.page-about .ab-standards__val {
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--purple);
  letter-spacing: -0.01em;
}

.page-about .ab-standards__unit {
  margin-left: 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-on-paper-dim);
}

.page-about .ab-standards__name {
  margin: 12px 0 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--text-on-paper);
}

.page-about .ab-standards__item p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-on-paper-dim);
}

.page-about .ab-standards__item:nth-child(2n) .ab-standards__val {
  color: #0F8F7C;
}

.page-about .ab-standards__item:nth-child(3n) .ab-standards__val {
  color: #A9761B;
}

/* ---------- base ---------- */
.page-about .ab-base {
  padding-top: 58px;
  padding-bottom: 58px;
  position: relative;
}

.page-about .ab-base::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--purple), var(--cyan) 40%, var(--gold) 70%, var(--coral));
  opacity: 0.5;
}

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

.page-about .ab-base__body p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-soft);
}

.page-about .ab-base__facts {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ab-rule);
}

.page-about .ab-base__fact {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ab-rule-soft);
}

.page-about .ab-base__key {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .ab-base__val {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}

.page-about .ab-base__note {
  margin: 20px 0 0;
  padding: 14px 16px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--text-dim);
  border-left: 2px solid var(--gold);
  background: rgba(232, 180, 74, 0.06);
}

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

.page-about .ab-base__panel {
  padding: 22px 20px;
  border: 1px solid var(--ab-rule);
  border-radius: 3px;
  background: linear-gradient(160deg, rgba(107, 60, 255, 0.18), rgba(19, 26, 58, 0.9) 62%);
  box-shadow: var(--shadow-1);
}

.page-about .ab-base__panel-label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

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

.page-about .ab-base__dl dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-about .ab-base__dl dd {
  margin: 6px 0 0;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .ab-base__hint {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- next ---------- */
.page-about .ab-next {
  padding-top: 0;
  padding-bottom: 64px;
}

.page-about .ab-next__grid {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-about .ab-next__card {
  display: grid;
  gap: 6px;
  padding: 20px 18px;
  text-decoration: none;
  border: 1px solid var(--ab-rule);
  border-radius: 3px;
  background: rgba(19, 26, 58, 0.62);
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}

.page-about .ab-next__card:hover,
.page-about .ab-next__card:focus-visible {
  border-color: rgba(107, 60, 255, 0.7);
  background: rgba(107, 60, 255, 0.14);
  transform: translateY(-2px);
}

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

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

.page-about .ab-next__text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- responsive ---------- */
@media (min-width: 560px) {
  .page-about .ab-figures__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .ab-figures__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
  .page-about .ab-figures__list li {
    padding: 24px 18px;
    border-bottom: 0;
    border-left: 1px solid var(--ab-rule-soft);
  }
  .page-about .ab-figures__list li:first-child {
    border-left: 0;
  }

  .page-about .ab-timeline {
    padding-left: 0;
  }
  .page-about .ab-timeline::before {
    left: 158px;
    top: 14px;
  }
  .page-about .ab-timeline__item {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 34px;
    padding: 26px 0 30px;
  }
  .page-about .ab-timeline__item::before {
    left: 154px;
    top: 36px;
  }
  .page-about .ab-timeline__year {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-right: 14px;
  }
  .page-about .ab-timeline__year .num {
    font-size: 26px;
  }
  .page-about .ab-timeline__body {
    margin-top: 0;
  }
  .page-about .ab-timeline__body .h3 {
    font-size: 22px;
  }

  .page-about .ab-standards__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
  .page-about .ab-standards__item {
    padding: 26px 0;
  }
  .page-about .ab-standards__val {
    font-size: 42px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero {
    padding: 34px 0 0;
  }
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 56px;
  }
  .page-about .ab-hero__lede {
    font-size: 17px;
  }

  .page-about .ab-eco__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 56px;
  }
  .page-about .ab-eco__media {
    margin-top: 46px;
  }

  .page-about .ab-base__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 56px;
  }

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

@media (min-width: 1040px) {
  .page-about .ab-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    align-items: start;
  }
  .page-about .ab-team__card--edit {
    margin-top: 26px;
  }
  .page-about .ab-team__card--visual {
    margin-top: 52px;
  }
  .page-about .ab-team__card--support {
    margin-top: 12px;
  }
  .page-about .ab-stages__media {
    margin-top: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-timeline__item::before,
  .page-about .ab-next__card {
    transition: none;
  }
  .page-about .ab-next__card:hover,
  .page-about .ab-next__card:focus-visible {
    transform: none;
  }
}