.page-about {
  --about-rail: 152px;
  --about-stair: 6%;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep);
  background-image: linear-gradient(152deg, #0D1B33 0%, #16233c 46%, #1B2E4E 100%);
  color: var(--text-on-deep);
  padding: calc(var(--header-offset) + 72px) 0 88px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(250, 248, 244, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(250, 248, 244, .045) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: var(--slant-rise);
  background: var(--bg-page);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.page-about .about-hero__slash {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 40%;
  background: linear-gradient(200deg, rgba(176, 31, 36, .62), rgba(176, 31, 36, 0) 72%);
  clip-path: polygon(40% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 40px;
}

.page-about .about-hero__kicker {
  margin: 26px 0 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-gold);
  font-family: var(--font-mono);
}

.page-about .about-hero__title {
  margin: 14px 0 22px;
  font-size: clamp(30px, 5.4vw, 58px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--c-snow);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.9;
  color: var(--on-deep-soft);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 40px 0 0;
  padding: 26px 0 0;
  border-top: 1px solid var(--on-deep-line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 24px;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-stat .figure-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-gold);
}

.page-about .about-stat__label {
  font-size: 13px;
  color: var(--on-deep-soft);
}

.page-about .about-hero__panel {
  padding: 26px 24px;
  border: 1px solid var(--glass-line);
  align-self: end;
}

.page-about .about-hero__panel-title {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-gold);
  font-family: var(--font-mono);
}

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

.page-about .about-hero__ticks li {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.6;
  color: var(--on-deep-soft);
  padding-bottom: 14px;
  border-bottom: 1px solid var(--on-deep-line);
}

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

.page-about .about-hero__ticks .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-snow);
}

.page-about .about-hero__panel-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--on-deep-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-gold-soft);
}

/* ---------- Body shell ---------- */
.page-about .about-body {
  display: block;
  padding: 56px 0 96px;
}

.page-about .about-index {
  margin-bottom: 48px;
  padding: 16px;
  background: rgba(250, 248, 244, .9);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.page-about .index-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--text-muted);
}

.page-about .index-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .index-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  font-size: 14px;
  color: var(--text-muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .index-rail__link .mono {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-gold);
}

.page-about .index-rail__link:hover,
.page-about .index-rail__link:focus-visible {
  color: var(--text);
  background: rgba(232, 163, 58, .12);
}

.page-about .index-rail__link.is-active {
  color: var(--text);
  border-left-color: var(--c-red);
  background: rgba(176, 31, 36, .07);
}

.page-about .about-flow {
  min-width: 0;
}

/* ---------- Blocks ---------- */
.page-about .about-block {
  padding: 56px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-block--cta {
  border-top: 0;
  padding-bottom: 0;
}

.page-about .about-block__head {
  margin-bottom: 32px;
}

.page-about .about-block__title {
  margin: 0 0 10px;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--c-char);
  max-width: 24em;
  position: relative;
  padding-left: 18px;
}

.page-about .about-block__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .22em;
  bottom: .22em;
  width: 5px;
  background: var(--c-red);
  transform: skewY(-6deg);
}

.page-about .about-block__note {
  margin: 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 42em;
}

/* ---------- 01 trio ---------- */
.page-about .about-trio {
  display: grid;
  gap: 18px;
}

.page-about .trio-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 24px 22px;
  background: var(--bg-solid);
  border: 1px solid var(--line);
  border-top: 4px solid var(--c-red);
}

.page-about .trio-card--gold { border-top-color: var(--c-gold); }
.page-about .trio-card--teal { border-top-color: var(--c-teal); }

.page-about .trio-card .chip {
  align-self: flex-start;
  margin: 0;
}

.page-about .trio-card__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--c-char);
}

.page-about .trio-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
  flex: 1;
}

.page-about .trio-card__foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--text-muted);
}

/* ---------- 02 source chain ---------- */
.page-about .source-chain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
  counter-reset: none;
}

.page-about .chain-item {
  position: relative;
  padding: 26px 24px 22px;
  background: var(--bg-solid);
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-gold);
}

.page-about .chain-item__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
  letter-spacing: .04em;
}

.page-about .chain-item__title {
  margin: 12px 0 10px;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--c-char);
}

.page-about .chain-item__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-about .chain-item__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-red);
}

/* ---------- 03 team ---------- */
.page-about .about-team {
  display: grid;
  gap: 32px;
}

.page-about .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.page-about .about-count {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-muted);
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
}

.page-about .team-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--bg-solid);
  border: 1px solid var(--line);
  border-top: 3px solid var(--c-navy-mid);
  transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}

.page-about .team-card:hover {
  transform: translateY(-3px);
  border-top-color: var(--c-gold);
  box-shadow: 0 14px 28px rgba(13, 27, 51, .1);
}

.page-about .team-card__group {
  align-self: flex-start;
  margin: 0;
}

.page-about .team-card__role {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--c-char);
}

.page-about .team-card__duty {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  flex: 1;
}

.page-about .team-card__when {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--c-blue);
}

.page-about .about-team__media {
  margin: 0;
}

/* ---------- 04 season track ---------- */
.page-about .season-track {
  position: relative;
  padding-left: 26px;
  display: grid;
  gap: 16px;
}

.page-about .season-track::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold) 0%, rgba(232, 163, 58, .16) 100%);
  transform-origin: top left;
  transform: skewX(-6deg);
}

.page-about .season-node {
  position: relative;
  background: var(--bg-solid);
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-red);
  transition: border-color .24s var(--ease);
}

.page-about .season-node::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 22px;
  width: 10px;
  height: 10px;
  background: var(--c-gold);
  transform: rotate(45deg);
}

.page-about .season-node[open] {
  border-left-color: var(--c-gold);
}

.page-about .season-node__head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.page-about .season-node__head::-webkit-details-marker {
  display: none;
}

.page-about .season-node__head::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-red);
  line-height: 1;
  transition: transform .24s var(--ease);
}

.page-about .season-node[open] .season-node__head::after {
  transform: rotate(45deg);
}

.page-about .season-node__ver {
  flex: none;
  padding: 4px 10px;
  background: var(--c-navy);
  color: var(--c-gold);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}

.page-about .season-node__name {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-char);
}

.page-about .season-node__body {
  padding: 0 20px 20px;
}

.page-about .season-node__body p {
  margin: 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-muted);
}

/* ---------- 05 partner ---------- */
.page-about .about-partner__banner,
.page-about .about-partner__map {
  margin: 0 0 28px;
}

.page-about .about-partner__map {
  margin: 28px 0 0;
}

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

.page-about .partner-card {
  padding: 24px;
  background: var(--bg-deep);
  background-image: linear-gradient(160deg, #0D1B33 0%, #1B2E4E 100%);
  border-top: 3px solid var(--c-gold);
  color: var(--text-on-deep);
}

.page-about .partner-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 4vw, 46px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}

.page-about .partner-card__title {
  margin: 10px 0 12px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-snow);
}

.page-about .partner-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--on-deep-soft);
}

/* ---------- 06 fact list ---------- */
.page-about .fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-about .fact-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .fact-item__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-red);
}

.page-about .fact-item__title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--c-char);
}

.page-about .fact-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-muted);
  max-width: 40em;
}

.page-about .about-note {
  margin: 26px 0 0;
  padding: 14px 18px;
  background: rgba(23, 149, 143, .09);
  border-left: 3px solid var(--c-teal);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: .04em;
  color: var(--c-char);
}

/* ---------- 07 CTA ---------- */
.page-about .cta-panel {
  position: relative;
  overflow: hidden;
  padding: 46px 28px;
}

.page-about .cta-panel::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(232, 163, 58, .26), rgba(232, 163, 58, 0) 68%);
  pointer-events: none;
}

.page-about .cta-panel__kicker {
  position: relative;
  z-index: 1;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-gold);
}

.page-about .cta-panel__title {
  position: relative;
  z-index: 1;
  margin: 0 0 16px;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-snow);
  max-width: 22em;
}

.page-about .cta-panel__text {
  position: relative;
  z-index: 1;
  margin: 0 0 28px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--on-deep-soft);
}

.page-about .cta-panel__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .cta-panel .btn--ghost {
  border: 1px solid rgba(250, 248, 244, .42);
  color: var(--c-snow);
  background: transparent;
}

.page-about .cta-panel .btn--ghost:hover,
.page-about .cta-panel .btn--ghost:focus-visible {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

/* ---------- Media ---------- */
.page-about .media-frame {
  position: relative;
  overflow: hidden;
  background: var(--bg-deep-2);
}

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

.page-about .media-frame__caption {
  margin: 0;
  padding: 10px 14px;
  background: var(--bg-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-gold-soft);
}

/* ---------- Tablet ---------- */
@media (min-width: 700px) {
  .page-about .about-trio {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .source-chain {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

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

  .page-about .fact-item {
    grid-template-columns: 120px minmax(0, 1fr);
    column-gap: 28px;
    align-items: start;
  }

  .page-about .fact-item__num {
    grid-row: 1 / span 2;
    padding-top: 2px;
  }
}

/* ---------- Desktop ---------- */
@media (min-width: 960px) {
  .page-about .about-body {
    display: grid;
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding: 72px 0 120px;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-offset) + 32px);
    margin-bottom: 0;
  }

  .page-about .index-rail__list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
  }

  .page-about .index-rail__link {
    white-space: normal;
  }

  .page-about .about-hero {
    padding: calc(var(--header-offset) + 96px) 0 124px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 64px;
    align-items: end;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px 32px;
  }

  .page-about .about-block {
    padding: 72px 0;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: start;
  }

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

  .page-about .about-team__media {
    margin-top: 6px;
  }

  .page-about .season-node:nth-child(2) { margin-left: var(--about-stair); }
  .page-about .season-node:nth-child(3) { margin-left: calc(var(--about-stair) * 2); }
  .page-about .season-node:nth-child(4) { margin-left: calc(var(--about-stair) * 3); }

  .page-about .cta-panel {
    padding: 62px 48px;
  }

  .page-about .about-partner__banner {
    margin-bottom: 36px;
  }

  .page-about .about-partner__map {
    margin-top: 36px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-block__title {
    font-size: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .season-node__head::after,
  .page-about .index-rail__link {
    transition: none;
  }

  .page-about .team-card:hover {
    transform: none;
  }
}
</final>