.page-about {
  --rail-w: 132px;
  --about-rule: rgba(22, 69, 58, 0.16);
  --about-soft: rgba(201, 162, 39, 0.24);
  background: var(--paper-050);
  color: var(--ink-text);
  font-family: var(--font-body);
}

.page-about h1,
.page-about .about-h2 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0;
}

.page-about .about-h2 {
  font-size: clamp(1.5rem, 5vw, 2.4rem);
}

.page-about .about-h2--light {
  color: var(--paper-050);
}

.page-about p {
  line-height: 1.75;
}

/* ---------- hero ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: 22px;
  overflow: hidden;
  color: var(--paper-050);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(23, 181, 198, 0.2), transparent 62%),
    linear-gradient(160deg, var(--ink-900) 0%, var(--ink-800) 55%, var(--ink-700) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.035) 0 1px,
    transparent 1px 15px
  );
}

.page-about .about-hero .breadcrumb {
  position: relative;
  color: rgba(245, 241, 231, 0.62);
  font-size: 13px;
}

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

.page-about .about-hero .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(245, 241, 231, 0.34);
}

.page-about .about-hero .breadcrumb a {
  color: rgba(245, 241, 231, 0.82);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover,
.page-about .about-hero .breadcrumb a:focus-visible {
  color: var(--gold-200);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
  padding: 26px 0 38px;
}

.page-about .about-hero__lead .eyebrow {
  margin: 0;
}

.page-about .about-hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(2.1rem, 8vw, 4.1rem);
  max-width: 16em;
  color: var(--paper-050);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  color: rgba(245, 241, 231, 0.84);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__facts {
  align-self: start;
  padding: 20px 22px 22px;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(10px);
}

.page-about .about-hero__facts-title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(245, 241, 231, 0.55);
}

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

.page-about .fact-list__item {
  display: grid;
  gap: 3px;
  padding-bottom: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .fact-list__item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .fact-list__num {
  font-size: clamp(1.5rem, 4.5vw, 1.9rem);
  line-height: 1.1;
  color: var(--gold-200);
  letter-spacing: 0.02em;
}

.page-about .fact-list__label {
  font-size: 13px;
  line-height: 1.55;
  color: rgba(245, 241, 231, 0.72);
}

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

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border-top: 1px solid var(--glass-line);
  opacity: 0.9;
}

/* ---------- scope ---------- */
.page-about .about-scope {
  padding: clamp(48px, 8vw, 88px) 0 clamp(36px, 6vw, 64px);
}

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

.page-about .about-scope__text .eyebrow {
  margin: 0 0 12px;
}

.page-about .about-scope__text p {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
}

.page-about .about-scope__quote {
  align-self: start;
  padding: 26px 24px;
  border-radius: var(--radius);
}

.page-about .about-scope__quote .eyebrow {
  margin: 0 0 14px;
}

.page-about .about-scope__quote-text {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.05rem, 3.4vw, 1.32rem);
  font-weight: 700;
  line-height: 1.62;
  color: var(--paper-050);
  letter-spacing: -0.01em;
}

.page-about .about-scope__quote-foot {
  margin: 20px 0 0;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--gold-200);
}

.page-about .pillars {
  display: grid;
  gap: 16px;
  margin: 40px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .pillars__item {
  padding: 22px 22px 24px;
  border-radius: var(--radius);
  border-left: 3px solid var(--gold-500);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

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

.page-about .pillars__no {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-400);
  margin-bottom: 10px;
}

.page-about .pillars__item h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.page-about .pillars__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(18, 33, 28, 0.82);
}

/* ---------- track ---------- */
.page-about .about-track {
  padding: clamp(36px, 6vw, 56px) 0 clamp(48px, 8vw, 88px);
  background: var(--paper-150);
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-track__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-track__rail .eyebrow {
  margin: 0 0 12px;
}

.page-about .year-scale {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
}

.page-about .year-scale__link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 78px;
  min-height: 44px;
  justify-content: center;
  padding: 8px 12px;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  color: var(--ink-700);
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.page-about .year-scale__link span {
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .year-scale__link em {
  font-style: normal;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-400);
}

.page-about .year-scale__link:hover,
.page-about .year-scale__link:focus-visible {
  border-color: var(--gold-500);
  background: var(--gold-200);
}

.page-about .about-track__body > .about-h2 {
  margin-bottom: 14px;
}

.page-about .about-track__intro {
  margin: 0 0 30px;
  max-width: 36em;
  font-size: 15px;
  color: rgba(18, 33, 28, 0.76);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .timeline {
  position: relative;
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 0 0 0 36px;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold-500), var(--ink-400));
}

.page-about .timeline__item {
  position: relative;
  scroll-margin-top: 110px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold-500);
  border: 2px solid var(--paper-150);
  box-shadow: 0 0 0 3px var(--about-soft);
}

.page-about .timeline__item:target::before {
  background: var(--cyan-500);
  box-shadow: 0 0 0 5px rgba(23, 181, 198, 0.25);
}

.page-about .timeline__card {
  padding: 20px 20px 18px;
  border-radius: var(--radius);
  transition: transform 220ms var(--ease);
}

.page-about .timeline__card:hover {
  transform: translateY(-3px);
}

.page-about .timeline__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.page-about .timeline__meta .badge {
  background: var(--ink-900);
  color: var(--gold-200);
}

.page-about .timeline__year {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-400);
}

.page-about .timeline__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.page-about .timeline__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(18, 33, 28, 0.84);
}

.page-about .timeline__more {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--about-rule);
}

.page-about .timeline__more summary {
  min-height: 32px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-700);
  list-style: none;
}

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

.page-about .timeline__more summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--gold-500);
  color: var(--ink-700);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
}

.page-about .timeline__more[open] summary::before {
  content: "−";
  background: var(--gold-500);
  color: var(--ink-900);
}

.page-about .timeline__more summary:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
}

.page-about .timeline__more p {
  margin: 10px 0 0;
  font-size: 13.8px;
  line-height: 1.75;
  color: rgba(18, 33, 28, 0.74);
}

/* ---------- team ---------- */
.page-about .about-team {
  padding: clamp(48px, 8vw, 88px) 0;
}

.page-about .about-team__head .eyebrow {
  margin: 0 0 12px;
}

.page-about .about-team__grid {
  display: grid;
  gap: 26px;
  margin-top: 32px;
}

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

.page-about .team-bars__item {
  padding: 24px 22px;
  border-radius: var(--radius);
  transition: transform 240ms var(--ease);
}

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

.page-about .team-bars__num {
  display: block;
  font-size: clamp(2.2rem, 7vw, 3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.page-about .team-bars__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .team-bars__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

.page-about .team-bars__item--tech {
  background: var(--ink-900);
  color: var(--paper-050);
}

.page-about .team-bars__item--tech .team-bars__num {
  color: var(--gold-500);
}

.page-about .team-bars__item--tech p {
  color: rgba(245, 241, 231, 0.76);
}

.page-about .team-bars__item--doc {
  background: var(--paper-150);
  color: var(--ink-text);
  border: 1px solid var(--about-rule);
}

.page-about .team-bars__item--doc .team-bars__num {
  color: var(--ink-400);
}

.page-about .team-bars__item--doc p {
  color: rgba(18, 33, 28, 0.78);
}

.page-about .team-bars__item--cs {
  background: linear-gradient(155deg, var(--ink-700), var(--ink-800));
  color: var(--paper-050);
}

.page-about .team-bars__item--cs .team-bars__num {
  color: var(--cyan-500);
}

.page-about .team-bars__item--cs p {
  color: rgba(245, 241, 231, 0.76);
}

.page-about .about-team__figure {
  margin: 0;
  align-self: start;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--paper-150);
}

.page-about .about-team__figure .media__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  line-height: 1.6;
  color: var(--ink-400);
}

.page-about .about-team__note {
  margin: 30px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--cyan-500);
  background: rgba(23, 181, 198, 0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-text);
}

/* ---------- archive ---------- */
.page-about .about-archive {
  padding: clamp(44px, 7vw, 80px) 0;
  background: var(--paper-150);
  border-top: 1px solid var(--about-rule);
}

.page-about .about-archive__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-archive__visual {
  position: relative;
  display: grid;
  gap: 18px;
}

.page-about .drawers {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 14px;
  border: 1px solid var(--about-rule);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.55);
}

.page-about .drawers__layer {
  display: block;
  height: 22px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--ink-900), var(--ink-700));
}

.page-about .drawers__layer:nth-child(1) { width: 100%; opacity: 1; }
.page-about .drawers__layer:nth-child(2) { width: 92%; opacity: 0.86; }
.page-about .drawers__layer:nth-child(3) { width: 84%; opacity: 0.72; }
.page-about .drawers__layer:nth-child(4) { width: 76%; opacity: 0.58; }
.page-about .drawers__layer:nth-child(5) {
  width: 68%;
  opacity: 0.44;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-200));
}

.page-about .about-archive__visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  background: var(--paper-050);
}

.page-about .about-archive__text .eyebrow {
  margin: 0 0 12px;
}

.page-about .about-archive__text > p {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 15.5px;
}

.page-about .archive-points {
  display: grid;
  gap: 14px;
  margin: 24px 0 26px;
  padding: 0;
  list-style: none;
}

.page-about .archive-points li {
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 10px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(18, 33, 28, 0.84);
}

.page-about .archive-points .status-dot {
  margin-top: 8px;
}

.page-about .archive-points strong {
  color: var(--ink-900);
}

/* ---------- contact ---------- */
.page-about .about-contact {
  padding: clamp(44px, 7vw, 80px) 0 clamp(52px, 8vw, 92px);
}

.page-about .about-contact__panel {
  display: grid;
  gap: 30px;
  padding: clamp(28px, 5vw, 52px);
  border-radius: var(--radius);
}

.page-about .about-contact__text .eyebrow {
  margin: 0 0 12px;
}

.page-about .about-contact__lede {
  margin: 16px 0 0;
  max-width: 36em;
  font-size: 15.5px;
  color: rgba(245, 241, 231, 0.8);
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .contact-card {
  margin: 0;
  padding: 22px;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  background: var(--glass);
  align-self: start;
}

.page-about .contact-card__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .contact-card__row:first-child {
  padding-top: 0;
}

.page-about .contact-card__row dt {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(245, 241, 231, 0.52);
}

.page-about .contact-card__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper-050);
  word-break: break-word;
}

.page-about .contact-card__row dd a {
  color: var(--gold-200);
  text-decoration: none;
}

.page-about .contact-card__row dd a:hover,
.page-about .contact-card__row dd a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .contact-card__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(245, 241, 231, 0.6);
}

.page-about a.btn:focus-visible,
.page-about .year-scale__link:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
}

/* ---------- responsive ---------- */
@media (min-width: 640px) {
  .page-about .pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .team-bars {
    grid-template-columns: 1.35fr 1fr 1.15fr;
    align-items: stretch;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 56px;
    padding: 46px 0 58px;
  }

  .page-about .about-hero__figure img {
    aspect-ratio: 21 / 9;
  }

  .page-about .about-scope__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 64px;
  }

  .page-about .about-scope__quote {
    margin-top: 38px;
    position: relative;
  }

  .page-about .about-scope__quote::before {
    content: "";
    position: absolute;
    left: -16px;
    top: 26px;
    width: 16px;
    height: 1px;
    background: var(--gold-500);
  }

  .page-about .pillars {
    margin-top: 56px;
  }

  .page-about .pillars__item {
    padding: 26px 24px 28px;
  }

  .page-about .about-track__grid {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-track__rail {
    position: sticky;
    top: 108px;
  }

  .page-about .year-scale {
    flex-direction: column;
    overflow: visible;
    gap: 10px;
    border-left: 2px solid var(--gold-500);
    padding-left: 14px;
  }

  .page-about .year-scale__link {
    min-width: 0;
    border: 0;
    background: transparent;
    padding: 4px 0;
    color: var(--ink-400);
    transition: color 200ms var(--ease), transform 200ms var(--ease);
  }

  .page-about .year-scale__link em {
    color: rgba(46, 107, 87, 0.72);
  }

  .page-about .year-scale__link:hover,
  .page-about .year-scale__link:focus-visible {
    background: transparent;
    border-color: transparent;
    color: var(--ink-900);
    transform: translateX(4px);
  }

  .page-about .year-scale__link:hover em {
    color: var(--gold-500);
  }

  .page-about .timeline {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 72px;
    row-gap: 34px;
    padding-left: 0;
  }

  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-1px);
    top: 10px;
    bottom: 10px;
  }

  .page-about .timeline__item:nth-child(1) { grid-area: 1 / 1; }
  .page-about .timeline__item:nth-child(2) { grid-area: 2 / 2; }
  .page-about .timeline__item:nth-child(3) { grid-area: 3 / 1; }
  .page-about .timeline__item:nth-child(4) { grid-area: 4 / 2; }
  .page-about .timeline__item:nth-child(5) { grid-area: 5 / 1; }

  .page-about .timeline__item::before {
    left: auto;
    right: -44px;
    top: 26px;
    border-color: var(--paper-150);
  }

  .page-about .timeline__item:nth-child(even)::before {
    left: -44px;
    right: auto;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-archive__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-archive__visual {
    position: sticky;
    top: 108px;
  }

  .page-about .about-contact__panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 48px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__grid {
    gap: 72px;
  }

  .page-about .timeline {
    column-gap: 88px;
  }

  .page-about .timeline__item::before {
    right: -52px;
  }

  .page-about .timeline__item:nth-child(even)::before {
    left: -52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .pillars__item,
  .page-about .timeline__card,
  .page-about .team-bars__item,
  .page-about .year-scale__link {
    transition: none;
  }

  .page-about .pillars__item:hover,
  .page-about .timeline__card:hover,
  .page-about .team-bars__item:hover,
  .page-about .year-scale__link:hover {
    transform: none;
  }
}
<<<END>>>