.page-about {
  --about-gap: clamp(1.5rem, 3.4vw, 3rem);
  --about-blob: 58% 42% 52% 48% / 46% 54% 46% 54%;
}

.page-about .about-section-head {
  max-width: 62ch;
  margin-bottom: clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-section-head h2 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.7rem, 4.4vw, 2.9rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--ivory);
  margin: 0.5rem 0 0.85rem;
}

.page-about .about-section-head__lead {
  color: var(--mist);
  font-size: 1.02rem;
  line-height: 1.75;
  margin: 0;
}

/* ---------- Hero ---------- */

.page-about .about-hero {
  padding: clamp(1.75rem, 5vw, 4rem) 0 clamp(2.5rem, 7vw, 6rem);
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  top: 8%;
  width: min(46vw, 520px);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 40% 40%, rgba(30, 95, 122, 0.5), rgba(6, 18, 31, 0) 68%);
  border-radius: var(--about-blob);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: center;
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}

.page-about .about-hero h1 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2rem, 6.4vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ivory);
  margin: 0.6rem 0 0;
  max-width: 22ch;
}

.page-about .about-hero__lead {
  color: var(--mist);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  line-height: 1.8;
  margin: 1.25rem 0 0;
  max-width: 58ch;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem 1.5rem;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding-top: clamp(1.25rem, 3vw, 2rem);
  border-top: 1px solid var(--line-gold);
}

.page-about .about-hero__stats dt {
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  margin-bottom: 0.35rem;
}

.page-about .about-hero__stats dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 0.32rem;
}

.page-about .about-hero__stats .num-display {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(1.9rem, 4.6vw, 2.9rem);
  line-height: 1;
  color: var(--gold);
}

.page-about .about-hero__unit {
  font-size: 0.86rem;
  color: var(--mist);
}

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

/* ---------- Origin ---------- */

.page-about .about-origin {
  padding: clamp(2.75rem, 7vw, 6rem) 0;
}

.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-origin__main h2 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.6rem, 4.2vw, 2.7rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--ivory);
  margin: 0.5rem 0 1.25rem;
  max-width: 24ch;
}

.page-about .about-origin__main .prose p {
  color: rgba(242, 239, 231, 0.86);
}

.page-about .about-origin__aside {
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-origin__aside:hover {
  transform: translateY(-4px);
}

.page-about .about-origin__aside-title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--gold-soft);
  margin: 0 0 0.9rem;
}

.page-about .about-aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-about .about-aside-list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.93rem;
  line-height: 1.6;
  color: rgba(242, 239, 231, 0.9);
}

.page-about .about-aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 12px;
  height: 2px;
  background: var(--gold);
}

.page-about .about-aside-note {
  margin: 1.15rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mist);
  max-height: 4.6em;
  overflow: hidden;
  transition: max-height 260ms var(--ease), color 180ms var(--ease);
}

.page-about .about-origin__aside:hover .about-aside-note,
.page-about .about-origin__aside:focus-within .about-aside-note {
  max-height: 14em;
  color: rgba(242, 239, 231, 0.9);
}

/* ---------- Timeline ---------- */

.page-about .about-timeline {
  padding: clamp(2.75rem, 7vw, 6rem) 0;
}

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

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

.page-about .about-rail__title {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
  margin: 0 0 0.9rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  counter-reset: rail;
}

.page-about .about-rail__list li {
  counter-increment: rail;
}

.page-about .about-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.42rem 0;
  font-size: 0.86rem;
  color: var(--mist);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 0.75rem;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-rail__list a::before {
  content: counter(rail, decimal-leading-zero);
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 0.76rem;
  color: var(--gold);
  opacity: 0.7;
}

.page-about .about-rail__list a:hover,
.page-about .about-rail__list a:focus-visible {
  color: var(--gold-soft);
  border-left-color: var(--gold);
}

.page-about .about-timeline__figure {
  margin: 0 0 clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 2.25rem;
  border-left: 1px solid var(--line-gold);
}

.page-about .about-node {
  position: relative;
  padding: 0 0 clamp(2rem, 4.5vw, 3.25rem);
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -2.25rem;
  top: 0.85rem;
  width: 13px;
  height: 13px;
  margin-left: -7px;
  background: var(--gold);
  border-radius: 50% 42% 55% 45% / 48% 55% 45% 52%;
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.14);
}

.page-about .about-node:nth-child(2n)::before {
  border-radius: 42% 55% 45% 58% / 55% 45% 55% 45%;
  background: var(--gold-soft);
}

.page-about .about-node__year {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(2.4rem, 8vw, 4.2rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--gold);
  margin: 0 0 0.5rem;
}

@supports ((-webkit-text-stroke: 1px #000)) {
  .page-about .about-node__year {
    color: transparent;
    -webkit-text-stroke: 1.4px var(--gold-soft);
  }
}

.page-about .about-node__title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(1.08rem, 2.4vw, 1.42rem);
  line-height: 1.32;
  color: var(--ivory);
  margin: 0 0 0.6rem;
  max-width: 30ch;
}

.page-about .about-node__text {
  font-size: 0.98rem;
  line-height: 1.78;
  color: rgba(242, 239, 231, 0.8);
  margin: 0;
  max-width: 60ch;
}

.page-about .about-node__step {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.24em;
  color: var(--gold);
  padding: 0 0.1em;
}

.page-about .about-node__tag {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin: 0.9rem 0 0;
  font-size: 0.86rem;
  color: var(--mist);
}

/* ---------- Taxonomy ---------- */

.page-about .about-taxonomy {
  padding: clamp(2.75rem, 7vw, 6rem) 0;
}

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

.page-about .about-taxonomy__lanes {
  display: grid;
  gap: 0.85rem;
}

.page-about .about-lane {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(6, 18, 31, 0.42);
  border: 1px solid rgba(201, 162, 39, 0.16);
  transition: border-color 180ms var(--ease);
}

.page-about .about-lane[open] {
  border-color: rgba(201, 162, 39, 0.46);
}

.page-about .about-lane > summary {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.9rem;
  align-items: center;
  padding: 1.05rem 3rem 1.05rem 1.25rem;
  cursor: pointer;
  list-style: none;
  position: relative;
}

.page-about .about-lane > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-lane > summary::after {
  content: "";
  position: absolute;
  right: 1.15rem;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 220ms var(--ease);
}

.page-about .about-lane[open] > summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.page-about .about-lane__num {
  grid-row: 1 / span 2;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--gold);
  opacity: 0.85;
}

.page-about .about-lane__name {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--ivory);
}

.page-about .about-lane__hint {
  grid-column: 2;
  font-size: 0.82rem;
  color: var(--mist);
}

.page-about .about-lane .disclosure__body {
  padding: 0 1.25rem 1.35rem 3.05rem;
}

.page-about .about-lane .disclosure__body p {
  font-size: 0.95rem;
  line-height: 1.78;
  color: rgba(242, 239, 231, 0.84);
  margin: 0 0 0.9rem;
  max-width: 58ch;
}

.page-about .about-lane__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-about .about-lane__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-about .about-lane__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 11px;
  height: 2px;
  background: var(--gold);
  opacity: 0.8;
}

.page-about .about-taxonomy__map {
  display: flex;
  align-items: center;
}

.page-about .about-map {
  width: 100%;
  padding: clamp(1.25rem, 3vw, 1.9rem);
  border-radius: var(--radius-lg);
  background: rgba(18, 58, 90, 0.22);
  border: 1px solid var(--line);
}

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

.page-about .about-map__caption {
  margin: 1rem 0 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: rgba(242, 239, 231, 0.85);
}

.page-about .about-map__status {
  margin: 0.85rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line-gold);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--gold-soft);
}

/* ---------- Team ---------- */

.page-about .about-team {
  padding: clamp(2.75rem, 7vw, 6rem) 0;
}

.page-about .about-team__figure {
  margin: 0 0 clamp(1.5rem, 3.5vw, 2.5rem);
}

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

.page-about .about-team__card {
  position: relative;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border-radius: var(--radius-lg);
  background: rgba(11, 33, 54, 0.5);
  border-top: 3px solid var(--gold);
  transition: transform 200ms var(--ease), background 200ms var(--ease);
}

.page-about .about-team__card--tech {
  border-top-color: var(--jade);
}

.page-about .about-team__card--success {
  border-top-color: var(--cinnabar);
}

.page-about .about-team__card:hover {
  transform: translateY(-4px);
  background: rgba(18, 58, 90, 0.42);
}

.page-about .about-team__num {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--gold);
  opacity: 0.8;
  margin: 0 0 0.6rem;
}

.page-about .about-team__card--tech .about-team__num {
  color: var(--jade);
}

.page-about .about-team__card--success .about-team__num {
  color: var(--cinnabar);
}

.page-about .about-team__card h3 {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--ivory);
  margin: 0 0 0.6rem;
}

.page-about .about-team__card p {
  font-size: 0.93rem;
  line-height: 1.76;
  color: rgba(242, 239, 231, 0.8);
  margin: 0;
}

.page-about .about-team__partners {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border-radius: var(--radius-lg);
}

.page-about .about-team__partners-title {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--ivory);
  margin: 0 0 0.7rem;
}

.page-about .about-team__partners p {
  font-size: 0.95rem;
  line-height: 1.78;
  color: rgba(242, 239, 231, 0.85);
  margin: 0;
  max-width: 72ch;
}

/* ---------- Reach ---------- */

.page-about .about-reach {
  padding: clamp(2.75rem, 7vw, 6rem) 0;
}

.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-reach__copy h2 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.6rem, 4.2vw, 2.7rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--ivory);
  margin: 0.5rem 0 1.25rem;
  max-width: 22ch;
}

.page-about .about-reach__copy .prose p {
  color: rgba(242, 239, 231, 0.86);
}

.page-about .about-reach__panel {
  position: relative;
  padding: clamp(1.4rem, 3.4vw, 2rem);
  border-radius: var(--radius-lg);
  background: rgba(6, 18, 31, 0.55);
  border: 1px solid var(--line-gold);
  overflow: hidden;
}

.page-about .about-reach__figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem 1.25rem;
  position: relative;
  z-index: 1;
}

.page-about .about-reach__value {
  display: block;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(1.8rem, 4.4vw, 2.6rem);
  line-height: 1;
  color: var(--gold-soft);
}

.page-about .about-reach__label {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--mist);
}

.page-about .about-reach__dots {
  position: absolute;
  inset: auto -8% -22% auto;
  width: 190px;
  height: 150px;
  background-image: radial-gradient(circle, rgba(201, 162, 39, 0.42) 1.6px, transparent 1.7px);
  background-size: 20px 20px;
  -webkit-mask-image: radial-gradient(ellipse at 70% 70%, #000 22%, transparent 74%);
  mask-image: radial-gradient(ellipse at 70% 70%, #000 22%, transparent 74%);
  pointer-events: none;
}

.page-about .about-reach__note {
  position: relative;
  z-index: 1;
  margin: 1.5rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- Commit ---------- */

.page-about .about-commit {
  padding: clamp(2.75rem, 7vw, 6rem) 0 clamp(3rem, 7vw, 5.5rem);
}

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

.page-about .about-commit__item {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(59, 42, 99, 0.42), rgba(12, 26, 42, 0.3));
  border-left: 3px solid var(--gold);
}

.page-about .about-commit__num {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.45rem;
  line-height: 1;
  color: var(--gold);
  margin: 0 0 0.7rem;
}

.page-about .about-commit__item h3 {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.08rem;
  line-height: 1.35;
  color: var(--ivory);
  margin: 0 0 0.6rem;
}

.page-about .about-commit__item p {
  font-size: 0.93rem;
  line-height: 1.78;
  color: rgba(242, 239, 231, 0.82);
  margin: 0;
}

.page-about .about-commit__item b {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 1.2em;
  color: var(--gold-soft);
  padding: 0 0.08em;
}

.page-about .about-commit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid var(--line);
}

/* ---------- Responsive ---------- */

@media (min-width: 620px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: clamp(2rem, 4vw, 3.5rem);
  }

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

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .about-timeline__layout {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .about-timeline__rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 2rem);
    align-self: start;
  }

  .page-about .about-taxonomy__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(1.75rem, 3.5vw, 3rem);
    align-items: start;
  }

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

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

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

@media (min-width: 1180px) {
  .page-about .about-lane .disclosure__body {
    padding-right: 2rem;
  }

  .page-about .about-timeline__list {
    padding-left: 2.75rem;
  }

  .page-about .about-node::before {
    left: -2.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-origin__aside,
  .page-about .about-team__card,
  .page-about .about-lane > summary::after,
  .page-about .about-aside-note {
    transition: none;
  }

  .page-about .about-origin__aside:hover,
  .page-about .about-team__card:hover {
    transform: none;
  }
}