.page-about {
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: clip;
}

.page-about .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}

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

/* ---------- hero ---------- */

.page-about .about-hero {
  position: relative;
  padding: 28px 0 40px;
  background: var(--ink-800);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -12%;
  width: 74%;
  height: 100%;
  background: linear-gradient(135deg, rgba(30, 122, 76, 0.3), rgba(6, 18, 13, 0));
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold) 0%, rgba(200, 164, 75, 0.15) 62%, rgba(200, 164, 75, 0) 100%);
}

.page-about .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: 16px;
}

.page-about .hero-copy .label {
  display: inline-block;
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-about .hero-copy h1 {
  margin: 14px 0 0;
  font-size: clamp(32px, 8.4vw, 62px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 15ch;
}

.page-about .hero-lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .hero-stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin: 30px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 84px;
}

.page-about .hero-stat-num {
  font-size: clamp(28px, 5vw, 38px);
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.01em;
}

.page-about .hero-stat-cap {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .hero-art {
  width: 100%;
  max-width: 240px;
  margin-left: auto;
  color: rgba(200, 164, 75, 0.5);
}

.page-about .hero-svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- chapter index ---------- */

.page-about .about-index {
  background: rgba(6, 18, 13, 0.6);
  border-bottom: 1px solid var(--line-soft);
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-index::-webkit-scrollbar {
  display: none;
}

.page-about .about-index-list {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 10px 0;
  width: max-content;
  min-width: 100%;
}

.page-about .about-index-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-index-link .num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-index-link:hover {
  color: var(--paper);
  border-color: var(--line);
  background: rgba(20, 64, 47, 0.42);
}

/* ---------- block frame ---------- */

.page-about .about-block {
  padding: 52px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-block:first-of-type {
  border-top: 0;
}

.page-about .block-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .tick-rail {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .tick-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  color: var(--gold);
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.page-about .block-title {
  margin: 0 0 14px;
  font-size: clamp(25px, 4.4vw, 36px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .block-lead {
  margin: 0 0 34px;
  max-width: 48ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- pillars ---------- */

.page-about .pillar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .pillar {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  column-gap: 16px;
  padding: 26px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .pillar:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-about .pillar-idx {
  grid-row: 1 / span 2;
  padding-top: 6px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold);
  transition: color var(--dur) var(--ease);
}

.page-about .pillar-title {
  margin: 0 0 8px;
  font-size: 21px;
  font-weight: 700;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-about .pillar-text {
  margin: 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .pillar:hover .pillar-title {
  color: var(--gold-soft);
}

.page-about .pillar:hover .pillar-idx {
  color: var(--neon);
}

/* ---------- flow ---------- */

.page-about .flow-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .flow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .flow-step {
  padding: 22px 0 26px;
  border-top: 3px solid var(--pitch);
}

.page-about .flow-step + .flow-step {
  border-top-color: var(--gold);
}

.page-about .flow-time {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .flow-time .num {
  font-size: 32px;
  line-height: 1;
  color: var(--neon);
  letter-spacing: -0.01em;
}

.page-about .flow-unit {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--muted);
  font-weight: 500;
}

.page-about .flow-title {
  margin: 12px 0 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .flow-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 44ch;
}

.page-about .field-strip {
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.page-about .field-intro {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .field-hl {
  font-size: 24px;
  color: var(--gold);
  margin: 0 3px;
}

.page-about .field-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .field-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--grid-line);
  font-size: 15px;
  color: var(--muted);
}

.page-about .field-num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

/* ---------- figure ---------- */

.page-about .figure {
  margin: 0;
  background: var(--ink-800);
  border-left: 3px solid var(--gold);
  overflow: hidden;
}

.page-about .figure--wide {
  border-left: 0;
  border-top: 3px solid var(--gold);
  margin-bottom: 34px;
}

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

.page-about .figure figcaption {
  padding: 11px 16px;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-top: 1px solid var(--line-soft);
}

/* ---------- team ---------- */

.page-about .team-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .team-item {
  padding: 24px 0 0;
  border-top: 3px solid var(--pitch);
  transition: transform var(--dur) var(--ease);
}

.page-about .team-item:nth-child(2) {
  border-top-color: var(--gold);
}

.page-about .team-item:nth-child(3) {
  border-top-color: var(--away);
}

.page-about .team-item:hover {
  transform: translateY(-2px);
}

.page-about .team-tag {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--ink-900);
  background: var(--pitch);
}

.page-about .team-tag--gold {
  background: var(--gold);
}

.page-about .team-tag--away {
  background: var(--away);
}

.page-about .team-title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .team-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- timeline ---------- */

.page-about .timeline-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-about .tl-list {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 0;
}

.page-about .tl-list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(200, 164, 75, 0.06));
}

.page-about .tl-node {
  position: relative;
  padding: 0 0 32px 30px;
}

.page-about .tl-node:last-child {
  padding-bottom: 0;
}

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(200, 164, 75, 0.15);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .tl-node:hover::before {
  background: var(--neon);
  box-shadow: 0 0 0 7px rgba(216, 242, 60, 0.16);
}

.page-about .tl-year {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  letter-spacing: 0.14em;
  color: var(--gold);
  transition: color var(--dur) var(--ease);
}

.page-about .tl-node:hover .tl-year {
  color: var(--neon);
}

.page-about .tl-title {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .tl-text {
  margin: 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- audience ---------- */

.page-about .aud-head {
  display: none;
}

.page-about .aud-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .aud-role {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .aud-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  vertical-align: middle;
  border-radius: 50%;
  background: var(--pitch);
}

.page-about .aud-dot--b {
  background: var(--gold);
}

.page-about .aud-dot--c {
  background: var(--away);
}

.page-about .aud-dot--d {
  background: var(--bracket-b);
}

.page-about .aud-what p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 52ch;
}

/* ---------- reasons ---------- */

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

.page-about .reason-item {
  padding: 24px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .reason-idx {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .reason-title {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .reason-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- cta ---------- */

.page-about .about-cta {
  padding: 60px 0 76px;
  border-top: 3px solid var(--gold);
  background: linear-gradient(172deg, var(--ink-700) 0%, var(--ink-800) 58%, var(--ink-900) 100%);
}

.page-about .cta-title {
  margin: 0 0 14px;
  max-width: 20ch;
  font-size: clamp(24px, 3.8vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--paper);
}

.page-about .cta-text {
  margin: 0 0 28px;
  max-width: 48ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- reveal ---------- */

.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 480ms var(--ease), transform 480ms var(--ease);
}

.page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */

@media (min-width: 720px) {
  .page-about .field-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 34px;
  }

  .page-about .hero-art {
    max-width: 300px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 44px 0 56px;
  }

  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
    padding-top: 24px;
  }

  .page-about .hero-art {
    max-width: 100%;
  }

  .page-about .about-index-list {
    gap: 8px;
  }

  .page-about .about-block {
    padding: 84px 0;
  }

  .page-about .block-grid {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .tick-rail {
    position: relative;
    align-items: flex-start;
    padding-top: 4px;
  }

  .page-about .tick-rail::after {
    content: "";
    position: absolute;
    left: 20px;
    top: 52px;
    bottom: 8px;
    width: 1px;
    background: linear-gradient(180deg, rgba(200, 164, 75, 0.42), rgba(200, 164, 75, 0));
  }

  .page-about .flow-top {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .team-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }

  .page-about .timeline-wrap {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.88fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .aud-head {
    display: grid;
    grid-template-columns: minmax(0, 0.4fr) minmax(0, 1fr);
    gap: 0 36px;
    padding-bottom: 12px;
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--gold);
    border-bottom: 1px solid var(--line);
  }

  .page-about .aud-row {
    grid-template-columns: minmax(0, 0.4fr) minmax(0, 1fr);
    gap: 0 36px;
    align-items: baseline;
    padding: 24px 0;
  }

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

  .page-about .reason-item {
    padding: 28px 28px 34px;
  }

  .page-about .reason-item:first-child {
    padding-left: 0;
  }

  .page-about .reason-item + .reason-item {
    border-left: 1px solid var(--line-soft);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .team-item,
  .page-about .pillar-title,
  .page-about .tl-node::before,
  .page-about .tl-year {
    transition: none;
  }
}