.page-about {
  --about-hair: rgba(159, 179, 191, .16);
  --about-grid: rgba(159, 179, 191, .07);
  --about-cyan-soft: rgba(61, 242, 208, .10);
  --about-panel: rgba(12, 29, 46, .78);
  background-color: var(--ink-900);
  background-image:
    linear-gradient(to right, var(--about-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-grid) 1px, transparent 1px);
  background-size: 24px 24px;
  color: var(--paper-050);
  font-family: var(--font-body);
  padding-bottom: 64px;
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: 20px;
}

.page-about .breadcrumb__link {
  color: var(--slate-400);
  text-decoration: none;
  font-size: 13px;
}

.page-about .breadcrumb__link:hover {
  color: var(--cyan-400);
}

.page-about .breadcrumb__link[aria-current="page"] {
  color: var(--paper-050);
  text-decoration: none;
  cursor: default;
}

.page-about .breadcrumb__sep {
  color: var(--ink-700);
  margin: 0 8px;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  padding: 26px 0 40px;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 8vw, 56px);
  line-height: 1.08;
  letter-spacing: -.02em;
  font-weight: 700;
  margin: 14px 0 18px;
  max-width: 22ch;
}

.page-about .about-hero__accent {
  color: var(--cyan-400);
}

.page-about .about-hero__lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper-200);
  max-width: 62ch;
  margin: 0;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-stat {
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-md);
  background: var(--about-panel);
  padding: 14px 16px;
  min-width: 0;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan-400);
}

.page-about .about-stat:nth-child(even) .about-stat__num {
  color: var(--orange-400);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--slate-400);
}

/* ---------- Layout ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: 36px;
}

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

.page-about .about-rail__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin: 0 0 12px;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  color: var(--paper-200);
  text-decoration: none;
  font-size: 13px;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  background: var(--about-cyan-soft);
  color: var(--cyan-400);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan-400);
}

.page-about .about-rail__note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate-400);
  margin: 0;
}

.page-about .about-rail__note a {
  color: var(--orange-400);
  text-decoration: none;
  border-bottom: 1px dashed currentColor;
}

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

/* ---------- Section frame ---------- */
.page-about .about-section {
  padding: 24px 0 44px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-section__head {
  display: flex;
  gap: 12px;
  align-items: baseline;
  margin: 0 0 18px;
}

.page-about .about-section__head .index-number {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan-400);
  flex: none;
}

.page-about .about-section h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 5.4vw, 34px);
  line-height: 1.15;
  letter-spacing: -.01em;
  font-weight: 700;
  margin: 0;
}

.page-about .about-body p {
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-200);
  margin: 0 0 14px;
}

/* ---------- Timeline ---------- */
.page-about .chrono-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .chrono {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 4px 0 0 30px;
}

.page-about .chrono::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--cyan-400), var(--orange-400));
  opacity: .5;
}

.page-about .chrono__item {
  position: relative;
  padding-bottom: 34px;
}

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

.page-about .chrono__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 14px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  box-sizing: border-box;
  background: var(--ink-900);
  border: 2px solid var(--cyan-400);
}

.page-about .chrono__item:nth-child(2)::before {
  border-color: var(--orange-400);
}

.page-about .chrono__year {
  font-family: var(--font-mono);
  font-size: clamp(38px, 11vw, 62px);
  line-height: .95;
  font-weight: 700;
  letter-spacing: -.04em;
  margin: 0 0 8px;
  color: rgba(61, 242, 208, .30);
}

.page-about .chrono__item:nth-child(2) .chrono__year {
  color: rgba(255, 138, 61, .32);
}

.page-about .chrono__item:nth-child(3) .chrono__year {
  color: rgba(242, 245, 244, .16);
}

.page-about .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--about-hair);
  background: rgba(22, 50, 74, .6);
  color: var(--paper-200);
  margin-bottom: 10px;
}

.page-about .chrono__item h3 {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -.01em;
  font-weight: 700;
  margin: 0 0 8px;
}

.page-about .about-acc {
  margin-top: 14px;
}

/* ---------- Timeline side ---------- */
.page-about .chrono-side {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

.page-about .media-frame {
  margin: 0;
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
}

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

.page-about .media-frame__caption {
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate-400);
  padding: 10px 14px;
  background: rgba(7, 19, 32, .9);
}

.page-about .version-card {
  border: 1px solid var(--about-hair);
  border-radius: var(--radius-lg);
  background: var(--about-panel);
  padding: 18px;
}

.page-about .version-card__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--slate-400);
  margin: 0 0 12px;
}

.page-about .version-card dl {
  margin: 0;
  display: grid;
  gap: 9px;
}

.page-about .version-card__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  border-bottom: 1px dashed var(--about-hair);
  padding-bottom: 8px;
}

.page-about .version-card__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .version-card__row dt {
  font-size: 13px;
  color: var(--slate-400);
}

.page-about .version-card__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper-050);
  text-align: right;
}

/* ---------- Paper section ---------- */
.page-about .about-section--paper {
  background: var(--rule-100);
  color: var(--rule-ink);
  border-top: 0;
  border-radius: var(--radius-xl);
  padding: 26px 22px 30px;
  margin: 8px 0 24px;
}

.page-about .about-section--paper .index-number {
  color: var(--teal-600);
}

.page-about .about-section--paper h2 {
  color: var(--rule-ink);
}

.page-about .about-section--paper p {
  color: #2B3542;
}

.page-about .speed-compare {
  display: grid;
  gap: 18px;
  margin: 22px 0;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .62);
  border: 1px solid rgba(27, 36, 48, .12);
}

.page-about .speed-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px 12px;
}

.page-about .speed-row__label {
  font-size: 12px;
  color: #5A6674;
}

.page-about .speed-row__track {
  grid-column: 1 / -1;
  grid-row: 2;
  height: 10px;
  border-radius: var(--radius-pill);
  background: rgba(27, 36, 48, .10);
  overflow: hidden;
}

.page-about .speed-row__fill {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
}

.page-about .speed-row__fill--old {
  width: 100%;
  background: linear-gradient(90deg, rgba(90, 102, 116, .6), rgba(90, 102, 116, .32));
}

.page-about .speed-row__fill--new {
  width: 46%;
  background: linear-gradient(90deg, var(--cyan-400), var(--orange-400));
}

.page-about .speed-row__value {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--rule-ink);
  text-align: right;
}

.page-about .speed-notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .speed-notes li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.72;
  color: #2B3542;
}

.page-about .speed-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal-600);
}

/* ---------- Team ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .team-copy {
  min-width: 0;
}

.page-about .cat-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .cat-list li {
  font-size: 12px;
  line-height: 1.4;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--about-hair);
  background: rgba(22, 50, 74, .5);
  color: var(--paper-200);
}

/* ---------- Reach ---------- */
.page-about .reach-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0;
}

.page-about .reach-card {
  padding: 18px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--about-hair);
  background: linear-gradient(160deg, rgba(22, 50, 74, .9), rgba(12, 29, 46, .85));
  min-width: 0;
}

.page-about .reach-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(19px, 4.4vw, 26px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--orange-400);
}

.page-about .reach-card:nth-child(odd) .reach-card__num {
  color: var(--cyan-400);
}

.page-about .reach-card__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--slate-400);
}

/* ---------- Partners ---------- */
.page-about .partner-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .partner-list li {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border-left: 2px solid var(--orange-400);
  background: var(--about-panel);
  min-width: 0;
}

.page-about .partner-list strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--paper-050);
  margin-bottom: 5px;
}

.page-about .partner-list span {
  display: block;
  font-size: 13px;
  line-height: 1.68;
  color: var(--slate-400);
}

/* ---------- Next ---------- */
.page-about .about-section--next {
  border-top: 0;
  padding-top: 8px;
}

.page-about .next-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .next-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-hair);
  background: var(--about-panel);
  text-decoration: none;
  color: inherit;
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(61, 242, 208, .5);
}

.page-about .next-link__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--paper-050);
}

.page-about .next-link__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate-400);
}

.page-about .about-next__foot {
  margin-top: 20px;
  font-size: 14px;
  color: var(--slate-400);
}

.page-about .about-next__foot a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px dashed currentColor;
}

/* ---------- Reveal ---------- */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .26s var(--ease), transform .26s var(--ease);
}

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

/* ---------- Tablet ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .speed-row {
    grid-template-columns: 118px minmax(0, 1fr) 66px;
  }

  .page-about .speed-row__track {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .speed-row__value {
    grid-column: 3;
    grid-row: 1;
  }

  .page-about .reach-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .about-section--paper {
    padding: 32px 34px 36px;
  }
}

/* ---------- Desktop ---------- */
@media (min-width: 900px) {
  .page-about .chrono-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 40px;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    border-left: 1px solid var(--about-hair);
    padding-left: 18px;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-about .about-rail__link {
    display: flex;
    width: 100%;
    padding: 7px 8px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero {
    padding-top: 34px;
  }

  .page-about .about-hero__stats {
    margin-top: 34px;
  }
}

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

  .page-about .next-link,
  .page-about .about-rail__link {
    transition: none;
  }

  .page-about .next-link:hover,
  .page-about .next-link:focus-visible {
    transform: none;
  }
}
<<<END>>>