.page-about {
  --about-measure: 640px;
  color: var(--text);
  background:
    radial-gradient(900px 560px at 88% -8%, rgba(43, 227, 198, 0.08), transparent 62%),
    radial-gradient(720px 520px at 0% 34%, rgba(255, 124, 54, 0.045), transparent 60%);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 24px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--cyan);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--text-soft);
}

.page-about h1,
.page-about h2,
.page-about h3,
.page-about p {
  overflow-wrap: anywhere;
}

.page-about .about-hero {
  display: grid;
  gap: 28px;
  padding: clamp(28px, 5vw, 64px) 0 36px;
}

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

.page-about .about-hero h1 {
  margin: 14px 0 20px;
  max-width: 15ch;
  font-size: clamp(42px, 7.6vw, 84px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 700;
}

.page-about .about-hero__lead {
  max-width: var(--about-measure);
  margin: 0 0 24px;
  color: var(--text-soft);
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.78;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__aside {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: flex-start;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-about .about-hero__note {
  padding-left: 12px;
  border-left: 1px solid var(--line-bright);
}

.page-about .about-hero__coords {
  color: var(--muted-deep);
  line-height: 1.7;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 8px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-stats .stat {
  padding: 18px 16px;
  border-right: 1px solid var(--line-soft);
}

.page-about .about-stats .stat:nth-child(2n) {
  border-right: 0;
}

.page-about .about-stats .stat__value {
  display: block;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 34px);
  line-height: 1.1;
}

.page-about .about-stats .stat__label {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.page-about .about-section {
  padding-block: clamp(48px, 8vw, 88px);
}

.page-about .about-section__head {
  max-width: 760px;
  margin-bottom: 30px;
}

.page-about .about-section h2 {
  margin: 8px 0 12px;
  font-size: clamp(28px, 4.4vw, 48px);
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.page-about .about-section__head > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.78;
}

.page-about .about-why {
  border-top: 1px solid var(--line);
}

.page-about .about-why__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-why__lead h2 {
  max-width: 12ch;
}

.page-about .about-why__body p {
  margin: 0 0 1em;
  max-width: var(--about-measure);
  color: var(--text-soft);
  font-size: 16px;
  line-height: 1.82;
}

.page-about .about-why__body p:last-child {
  margin-bottom: 0;
}

.page-about .timeline-layout {
  display: grid;
  gap: 32px;
}

.page-about .about-years {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  position: sticky;
  top: calc(var(--h-header-scrolled) + 8px);
  z-index: 3;
  padding: 8px;
  background: rgba(10, 16, 28, 0.9);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(8px);
  scrollbar-width: thin;
}

.page-about .about-years__label {
  display: none;
}

.page-about .about-years a {
  flex: 0 0 auto;
  padding: 6px 10px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-decoration: none;
  border-radius: var(--radius-pill);
  transition: color 160ms var(--ease), background 160ms var(--ease);
}

.page-about .about-years a:hover,
.page-about .about-years a:focus-visible {
  color: var(--ink-900);
  background: var(--cyan);
  outline: none;
}

.page-about .timeline-track {
  position: relative;
  max-width: 820px;
  min-width: 0;
}

.page-about .timeline-cover {
  margin: 0 0 30px;
  width: min(100%, 380px);
}

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

.page-about .timeline-item {
  position: relative;
  padding: 0 0 34px 28px;
  border-left: 1px solid var(--line);
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--ink-900);
}

.page-about .timeline-item:target {
  border-left-color: var(--line-bright);
}

.page-about .timeline-item:target::before {
  background: var(--cyan-bright);
  box-shadow: 0 0 0 4px var(--cyan-deep), 0 0 16px rgba(43, 227, 198, 0.55);
}

.page-about .timeline-item--current::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--orange-deep);
}

.page-about .timeline-item__year {
  display: block;
  margin-bottom: 4px;
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-about .timeline-item h3 {
  margin: 0 0 6px;
  font-size: 20px;
  line-height: 1.35;
}

.page-about .timeline-item p {
  margin: 0;
  max-width: 54ch;
  color: var(--muted);
  line-height: 1.76;
}

.page-about .timeline-item .chip {
  margin-bottom: 8px;
}

.page-about .about-accuracy {
  border-top: 1px solid var(--line);
}

.page-about .accuracy-grid {
  display: grid;
  gap: 32px;
}

.page-about .accuracy-flow > ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .accuracy-flow > ol > li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 0 0 22px;
}

.page-about .accuracy-flow__num {
  color: var(--cyan);
  font-size: 13px;
  padding-top: 4px;
}

.page-about .accuracy-flow h3 {
  margin: 0 0 6px;
  font-size: 20px;
}

.page-about .accuracy-flow p {
  margin: 0;
  max-width: var(--about-measure);
  color: var(--muted);
  line-height: 1.78;
}

.page-about .field-set {
  margin-top: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-about .field-set h3 {
  margin: 0 0 14px;
  color: var(--text-soft);
  font-size: 16px;
}

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

.page-about .field-list li {
  padding: 6px 10px;
  color: var(--text-soft);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: 13px;
  line-height: 1.3;
}

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

.page-about .about-team {
  border-top: 1px solid var(--line);
}

.page-about .team-grid {
  display: grid;
  gap: 28px;
}

.page-about .team-chart {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-about .team-role {
  padding: 14px 16px;
  background: linear-gradient(180deg, rgba(16, 26, 43, 0.78), rgba(10, 16, 28, 0.5));
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  outline: none;
  transition: transform 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .team-role:hover,
.page-about .team-role:focus-visible {
  transform: translateY(-2px);
  border-color: var(--line-bright);
}

.page-about .team-role:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-about .team-role__head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
  color: var(--text-soft);
  font-size: 14px;
}

.page-about .team-role__head .data-mono {
  color: var(--cyan);
}

.page-about .team-role__track {
  height: 8px;
  overflow: hidden;
  background: var(--line);
  border-radius: var(--radius-pill);
}

.page-about .team-role__bar {
  display: block;
  width: var(--bar);
  height: 100%;
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan));
  border-radius: inherit;
}

.page-about .team-role--accent .team-role__bar {
  background: linear-gradient(90deg, var(--orange-deep), var(--orange));
}

.page-about .team-role--accent .team-role__head .data-mono {
  color: var(--orange);
}

.page-about .team-role__note {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
  transition: max-height 200ms var(--ease), opacity 200ms var(--ease), margin 200ms var(--ease);
}

.page-about .team-role:hover .team-role__note,
.page-about .team-role:focus-visible .team-role__note,
.page-about .team-role:focus-within .team-role__note {
  max-height: 90px;
  margin-top: 10px;
  opacity: 1;
}

.page-about .team-aside {
  padding-left: 20px;
  border-left: 1px solid var(--line);
}

.page-about .team-aside > p {
  margin: 0 0 20px;
  max-width: 46ch;
  color: var(--text-soft);
  line-height: 1.8;
}

.page-about .team-aside dl {
  display: grid;
  gap: 16px;
  margin: 0;
}

.page-about .team-aside dt {
  margin-bottom: 4px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .team-aside dd {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-partners {
  border-top: 1px solid var(--line);
}

.page-about .partner-stats {
  display: grid;
  gap: 1px;
  margin-bottom: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .partner-stat {
  padding: 22px 18px;
  background: var(--ink-800);
}

.page-about .partner-stat__num {
  display: block;
  color: var(--cyan);
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1;
}

.page-about .partner-stat:nth-child(3) .partner-stat__num {
  color: var(--orange);
}

.page-about .partner-stat__label {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

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

.page-about .partner-card {
  padding: 22px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  transition: transform 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .partner-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-bright);
}

.page-about .partner-card .chip {
  margin-bottom: 14px;
}

.page-about .partner-card h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.page-about .partner-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.76;
}

.page-about .about-beliefs {
  border-top: 1px solid var(--line);
}

.page-about .beliefs-figure {
  width: min(100%, 760px);
  margin: 0 0 30px auto;
}

.page-about .value-grid {
  display: grid;
  gap: 14px;
}

.page-about .value-card {
  position: relative;
  min-height: 210px;
  padding: 22px;
  background: linear-gradient(158deg, var(--ink-700), var(--ink-800));
  border: 1px solid var(--line);
  outline: none;
  transition: transform 160ms var(--ease), border-color 160ms var(--ease);
}

.page-about .value-card:hover,
.page-about .value-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--line-bright);
}

.page-about .value-card:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-about .value-card__num {
  display: block;
  margin-bottom: 22px;
  color: var(--cyan);
  font-size: 36px;
  line-height: 1;
  opacity: 0.9;
}

.page-about .value-card:nth-child(2) .value-card__num {
  color: var(--orange);
}

.page-about .value-card h3 {
  margin: 0 0 10px;
  font-size: 21px;
  line-height: 1.3;
}

.page-about .value-card > p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.72;
}

.page-about .value-card__detail {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  color: var(--muted) !important;
  font-size: 13px;
  transition: max-height 200ms var(--ease), opacity 200ms var(--ease), margin 200ms var(--ease);
}

.page-about .value-card:hover .value-card__detail,
.page-about .value-card:focus-visible .value-card__detail {
  max-height: 70px;
  margin-top: 12px;
  opacity: 1;
}

.page-about .about-cta {
  border-top: 1px solid var(--line);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 24px;
  padding: clamp(24px, 4vw, 36px);
  background:
    linear-gradient(120deg, rgba(43, 227, 198, 0.1), rgba(255, 124, 54, 0.055)),
    var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}

.page-about .about-cta h2 {
  margin: 8px 0 12px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.025em;
}

.page-about .about-cta p {
  margin: 0;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.78;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-self: end;
}

.page-about .about-toc {
  display: none;
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stats .stat {
    border-right: 1px solid var(--line-soft);
  }

  .page-about .about-stats .stat:nth-child(2n) {
    border-right: 1px solid var(--line-soft);
  }

  .page-about .about-stats .stat:last-child {
    border-right: 0;
  }

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

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

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

  .page-about .team-role__note {
    max-height: 90px;
    margin-top: 10px;
    opacity: 1;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1fr) 170px;
    gap: 48px;
    align-items: end;
    padding-top: clamp(44px, 6vw, 80px);
  }

  .page-about .about-hero__aside {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 16px;
    padding-bottom: 12px;
  }

  .page-about .about-hero__note {
    writing-mode: vertical-rl;
    text-orientation: upright;
    padding-left: 0;
    padding-top: 12px;
    border-left: 0;
    border-top: 1px solid var(--line-bright);
    line-height: 1.9;
  }

  .page-about .about-hero__coords {
    writing-mode: vertical-rl;
    text-orientation: upright;
    line-height: 2;
  }

  .page-about .about-why__grid {
    grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
    gap: 48px;
  }

  .page-about .about-why__lead {
    position: sticky;
    top: calc(var(--h-header-scrolled) + 32px);
    align-self: start;
  }

  .page-about .timeline-layout {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 52px;
  }

  .page-about .about-years {
    position: sticky;
    top: calc(var(--h-header-scrolled) + 28px);
    display: flex;
    flex-direction: column;
    gap: 2px;
    align-self: start;
    overflow: visible;
    padding: 0 0 0 14px;
    background: transparent;
    border: 0;
    border-left: 1px solid var(--line);
    border-radius: 0;
    backdrop-filter: none;
  }

  .page-about .about-years__label {
    display: block;
    margin-bottom: 10px;
    color: var(--muted-deep);
    font-size: 10px;
    letter-spacing: 0.24em;
  }

  .page-about .about-years a {
    position: relative;
    padding: 7px 0;
    border-radius: 0;
    font-size: 13px;
  }

  .page-about .about-years a::before {
    content: "";
    position: absolute;
    left: -18px;
    top: 14px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--line);
    transition: background 160ms var(--ease), box-shadow 160ms var(--ease);
  }

  .page-about .about-years a:hover,
  .page-about .about-years a:focus-visible {
    color: var(--cyan);
    background: transparent;
  }

  .page-about .about-years a:hover::before,
  .page-about .about-years a:focus-visible::before {
    background: var(--cyan);
    box-shadow: 0 0 10px rgba(43, 227, 198, 0.5);
  }

  .page-about .timeline-cover {
    width: min(100%, 420px);
  }

  .page-about .accuracy-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .accuracy-figure {
    position: sticky;
    top: calc(var(--h-header-scrolled) + 28px);
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .painter-role__note {
    max-height: 0;
    opacity: 0;
  }

  .page-about .team-role__note {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
  }

  .page-about .team-role:hover .team-role__note,
  .page-about .team-role:focus-visible .team-role__note,
  .page-about .team-role:focus-within .team-role__note {
    max-height: 90px;
    margin-top: 10px;
    opacity: 1;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
}

@media (min-width: 1180px) {
  .page-about .value-card {
    padding: 26px;
  }

  .page-about .value-card__num {
    font-size: 42px;
  }
}

@media (min-width: 1500px) {
  .page-about .about-toc {
    position: fixed;
    right: 26px;
    top: 50%;
    z-index: 4;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
  }

  .page-about .about-toc__label {
    margin-bottom: 8px;
    color: var(--muted-deep);
    font-size: 9px;
    letter-spacing: 0.24em;
  }

  .page-about .about-toc a {
    position: relative;
    padding: 5px 0 5px 14px;
    color: var(--muted);
    text-decoration: none;
    transition: color 160ms var(--ease);
  }

  .page-about .about-toc a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 1px;
    background: var(--line);
    transition: width 160ms var(--ease), background 160ms var(--ease);
  }

  .page-about .about-toc a:hover,
  .page-about .about-toc a:focus-visible,
  .page-about .about-toc a[aria-current="true"] {
    color: var(--cyan);
  }

  .page-about .about-toc a:hover::before,
  .page-about .about-toc a:focus-visible::before,
  .page-about .about-toc a[aria-current="true"]::before {
    width: 10px;
    background: var(--cyan);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-role,
  .page-about .partner-card,
  .page-about .value-card,
  .page-about .team-role__note,
  .page-about .value-card__detail,
  .page-about .about-years a,
  .page-about .about-toc a {
    transition: none;
  }
}
</main>

.page-about {
  --bar: 1rem;
}