.page-about {
  --year-col: 200px;
  --about-body: #C6CFD8;
  --about-ink-body: #39424B;
  position: relative;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .anno--ink {
  color: #6B747D;
}

/* ---------- HERO ---------- */
.page-about .about-hero {
  position: relative;
  padding: 40px 0 0;
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--line);
}

.page-about .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-top: 24px;
}

.page-about .hero-lead {
  max-width: 60ch;
}

.page-about .hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 8vw, 5rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  transform: scaleX(0.94);
  transform-origin: left center;
  margin: 14px 0 20px;
  color: var(--paper);
}

.page-about .hero-title br {
  display: none;
}

.page-about .lede {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--about-body);
  max-width: 52ch;
  margin: 0 0 26px;
}

.page-about .hero-media {
  margin: 0;
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin: 44px 0 0;
}

.page-about .hstat {
  background: var(--ink);
  padding: 18px 16px 20px;
  position: relative;
}

.page-about .hstat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 22px;
  background: var(--lime);
}

.page-about .hstat-label {
  display: block;
  font-size: 12px;
  line-height: 1.5;
  color: var(--grey);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.page-about .hstat-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1;
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-about .hstat-unit {
  font-size: 0.78rem;
  color: var(--grey);
  margin-left: 3px;
  font-weight: 400;
}

/* ---------- TIMELINE ---------- */
.page-about .timeline {
  padding: 0 0 40px;
  scroll-margin-top: 80px;
}

.page-about .year-jump {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  background: var(--ink);
  position: sticky;
  top: 0;
  z-index: 4;
  scrollbar-width: none;
}

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

.page-about .year-jump a {
  flex: 0 0 auto;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--grey);
  text-decoration: none;
  border-right: 1px solid var(--line);
  transition: color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-about .year-jump a:hover,
.page-about .year-jump a:focus-visible {
  color: var(--ink);
  background: var(--lime);
}

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

.page-about .year-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 130px;
}

.page-about .year-mark {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .year-mark::before {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  background: var(--grey);
  opacity: 0.4;
  transition: background-color 0.45s var(--ease), opacity 0.45s var(--ease);
}

.page-about .year-row.is-visible .year-mark::before {
  background: var(--lime);
  opacity: 1;
}

.page-about .year-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.2rem, 8vw, 3.6rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--grey);
  opacity: 0.45;
  transition: color 0.45s var(--ease), opacity 0.45s var(--ease);
}

.page-about .year-row.is-visible .year-num {
  color: var(--lime);
  opacity: 1;
}

.page-about .year-body {
  max-width: 62ch;
}

.page-about .year-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  border: 1px solid var(--blue);
  padding: 3px 9px;
  margin: 0 0 14px;
}

.page-about .year-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--paper);
}

.page-about .year-body p {
  margin: 0 0 14px;
  color: var(--about-body);
  line-height: 1.78;
  font-size: 0.98rem;
}

.page-about .year-body a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 207, 255, 0.35);
  transition: border-color 0.24s var(--ease), color 0.24s var(--ease);
}

.page-about .year-body a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .year-modules {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .year-modules li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: var(--ink-2);
  padding: 10px 14px;
  font-size: 0.88rem;
  color: var(--about-body);
}

.page-about .mod-tag {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--grey);
  border: 1px solid var(--line);
  padding: 2px 7px;
}

.page-about .year-figure {
  margin: 26px 0 0;
  max-width: 420px;
}

/* ---------- PAPER BAND: TEAM ---------- */
.page-about .about-paper {
  background: var(--paper);
  color: var(--ink);
  padding: 56px 0 60px;
  position: relative;
}

.page-about .about-paper::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 88px;
  height: 6px;
  background: var(--lime);
}

.page-about .block-head {
  max-width: 62ch;
  margin-bottom: 34px;
}

.page-about .block-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 5.6vw, 2.8rem);
  line-height: 1.04;
  letter-spacing: -0.015em;
  margin: 12px 0 14px;
  color: var(--ink);
}

.page-about .block-lede {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--about-ink-body);
  margin: 0;
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-about .team-copy p {
  margin: 0 0 16px;
  color: var(--about-ink-body);
  line-height: 1.8;
  font-size: 0.98rem;
  max-width: 60ch;
}

.page-about .team-figure {
  margin: 0;
}

.page-about .about-paper .media-caption {
  color: #6B747D;
}

.page-about .role-strip {
  list-style: none;
  margin: 38px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: #D8D2C4;
  border: 1px solid #D8D2C4;
}

.page-about .role-card {
  background: var(--paper);
  padding: 20px 18px 22px;
  border-left: 3px solid transparent;
  transition: border-color 0.28s var(--ease), background-color 0.28s var(--ease);
}

.page-about .role-card:hover {
  border-left-color: var(--lime-dark);
  background: #EDE8DB;
}

.page-about .role-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.9rem;
  line-height: 1;
  color: var(--ink);
  margin-bottom: 6px;
}

.page-about .role-name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin-bottom: 8px;
}

.page-about .role-card p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--about-ink-body);
}

/* ---------- PARTNERS ---------- */
.page-about .partners {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-about .partner-main p {
  margin: 0 0 16px;
  color: var(--about-body);
  line-height: 1.8;
  font-size: 0.98rem;
  max-width: 62ch;
}

.page-about .partner-side {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .partner-stat {
  background: var(--ink-2);
  padding: 18px 16px;
}

.page-about .partner-stat--accent {
  background: var(--lime);
}

.page-about .partner-stat--accent .ps-num,
.page-about .partner-stat--accent .ps-label {
  color: var(--ink);
}

.page-about .ps-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.9rem;
  line-height: 1;
  color: var(--lime);
  margin-bottom: 6px;
}

.page-about .ps-label {
  display: block;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--grey);
}

/* ---------- NEXT ---------- */
.page-about .next-up {
  padding: 56px 0 72px;
  background:
    linear-gradient(180deg, var(--ink) 0%, var(--layer) 100%);
}

.page-about .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: start;
}

.page-about .next-lead {
  max-width: 62ch;
}

.page-about .next-copy {
  margin: 0 0 16px;
  color: var(--about-body);
  line-height: 1.8;
  font-size: 0.98rem;
}

.page-about .next-lead .btn-row {
  margin-top: 24px;
}

.page-about .next-facts {
  display: grid;
  gap: 1px;
  background: rgba(147, 160, 172, 0.22);
  border: 1px solid rgba(147, 160, 172, 0.22);
}

.page-about .next-fact {
  background: var(--ink);
  padding: 20px 16px;
}

.page-about .nf-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 2.1rem;
  line-height: 1;
  color: var(--blue);
  margin-bottom: 8px;
}

.page-about .nf-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--grey);
}

/* ---------- RESPONSIVE ---------- */
@media (min-width: 640px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .page-about .hero-title br {
    display: inline;
  }
}

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

  .page-about .hero-grid {
    grid-template-columns: 1.12fr 0.88fr;
    gap: 56px;
    align-items: end;
  }

  .page-about .lede {
    font-size: 1.06rem;
  }

  .page-about .hero-stats {
    margin-top: 60px;
  }

  .page-about .hstat {
    padding: 22px 22px 26px;
  }

  .page-about .year-row {
    grid-template-columns: var(--year-col) 1fr;
    gap: 56px;
    padding: 56px 0;
  }

  .page-about .year-mark {
    position: sticky;
    top: 96px;
    align-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .page-about .year-mark::before {
    margin-bottom: 0;
  }

  .page-about .year-body p {
    font-size: 1rem;
  }

  .page-about .year-modules {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    border-color: transparent;
    transition: max-height 0.4s var(--ease), opacity 0.3s var(--ease), border-color 0.3s var(--ease);
  }

  .page-about .year-row:hover .year-modules,
  .page-about .year-row:focus-within .year-modules {
    max-height: 420px;
    opacity: 1;
    border-color: var(--line);
  }

  .page-about .about-paper,
  .page-about .partners,
  .page-about .next-up {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .page-about .team-grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .page-about .role-strip {
    grid-template-columns: repeat(4, 1fr);
    margin-top: 48px;
  }

  .page-about .partner-grid {
    grid-template-columns: 1.4fr 0.6fr;
    gap: 56px;
  }

  .page-about .next-grid {
    grid-template-columns: 1.35fr 0.65fr;
    gap: 56px;
  }
}

@media (min-width: 1200px) {
  .page-about .year-row {
    padding: 64px 0;
  }

  .page-about .next-up {
    padding-bottom: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .year-num,
  .page-about .year-mark::before,
  .page-about .year-modules,
  .page-about .role-card,
  .page-about .year-jump a {
    transition: none;
  }
}