.page-about {
  --about-rail-width: 172px;
  --about-hair: rgba(54, 241, 224, 0.22);
  --about-panel-grad: linear-gradient(152deg, rgba(18, 58, 90, 0.42), rgba(11, 31, 51, 0.92));
  color: var(--paper);
}

.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 5vw, 56px) 0 clamp(34px, 6vw, 76px);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 78% at 86% 8%, rgba(54, 241, 224, 0.11), transparent 66%),
    radial-gradient(52% 62% at 6% 92%, rgba(243, 188, 87, 0.07), transparent 72%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-hero__eyebrow {
  color: var(--cyan);
  margin-bottom: 18px;
}

.page-about .about-hero__title {
  font-size: clamp(34px, 6.6vw, 76px);
  font-weight: 200;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 clamp(18px, 3vw, 28px);
}

.page-about .about-hero__mark {
  position: relative;
  display: inline-block;
  color: var(--cyan);
}

.page-about .about-hero__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.04em;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(54, 241, 224, 0));
}

.page-about .about-hero__lead {
  max-width: 62ch;
  color: var(--text-soft);
  margin: 0 0 clamp(22px, 3.4vw, 32px);
}

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

.page-about .about-hero__aside {
  border: 1px solid var(--line);
  background: var(--about-panel-grad);
  padding: clamp(18px, 3vw, 26px);
  box-shadow: inset 0 1px 0 rgba(243, 247, 251, 0.06);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 12px;
  margin: 0;
}

.page-about .about-hero__fact {
  border-left: 1px solid var(--about-hair);
  padding-left: 12px;
}

.page-about .about-hero__fact dt {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.14em;
  margin-bottom: 6px;
}

.page-about .about-hero__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 400;
  line-height: 1.1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__unit {
  font-size: 0.46em;
  color: var(--muted);
  margin-left: 4px;
  letter-spacing: 0.06em;
}

.page-about .about-hero__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-soft);
}

.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
  padding-top: clamp(30px, 5vw, 56px);
  padding-bottom: clamp(46px, 8vw, 96px);
}

.page-about .about-rail {
  border-left: 2px solid var(--about-hair);
  padding-left: 14px;
}

.page-about .about-rail__label {
  color: var(--muted);
  margin: 0 0 12px;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.page-about .about-rail__list li {
  margin: 0;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: var(--text-soft);
  text-decoration: none;
  font-size: 14px;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-rail__link .mono {
  color: var(--teal);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-chapter {
  padding: 0 0 clamp(38px, 6vw, 72px);
  margin-bottom: clamp(38px, 6vw, 72px);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-chapter:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-chapter__head {
  border-top: 1px solid var(--line);
  padding-top: clamp(16px, 2.4vw, 24px);
  margin-bottom: clamp(20px, 3.4vw, 32px);
}

.page-about .section__index {
  color: var(--teal);
  font-size: 12px;
  letter-spacing: 0.2em;
  margin: 0 0 10px;
}

.page-about .about-chapter__title {
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 300;
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin: 0 0 14px;
  color: var(--paper);
}

.page-about .about-chapter__lead {
  color: var(--text-soft);
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.85;
  max-width: 66ch;
  margin: 0;
}

.page-about .about-chapter__aside {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
  border-left: 2px solid var(--gold);
  padding: 2px 0 2px 14px;
}

.page-about .about-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(54, 241, 224, 0.4);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-about .about-figure {
  margin: 0 0 clamp(22px, 3.4vw, 34px);
  border: 1px solid var(--line);
  padding: 8px;
  background: var(--panel);
  box-shadow: inset 0 1px 0 rgba(243, 247, 251, 0.05);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--sea);
}

.page-about .about-figure__caption {
  display: block;
  padding: 10px 6px 4px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  border-top: 1px dashed var(--line-soft);
  margin-top: 8px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 16px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(54, 241, 224, 0.06));
}

.page-about .about-timeline__item {
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr);
  padding: clamp(16px, 2.6vw, 22px);
  margin-bottom: 14px;
  background: var(--about-panel-grad);
  border: 1px solid var(--line);
  border-top: 1px solid rgba(54, 241, 224, 0.28);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

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

.page-about .about-timeline__item:hover,
.page-about .about-timeline__item:focus-within,
.page-about .about-timeline__item:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--glow);
  outline: none;
}

.page-about .about-timeline__year {
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.12em;
  align-self: start;
}

.page-about .about-timeline__title {
  margin: 0 0 8px;
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 500;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-timeline__text {
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-tree {
  border: 1px solid var(--line);
  background: rgba(11, 31, 51, 0.6);
  padding: clamp(18px, 3vw, 28px);
}

.page-about .about-tree__core {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 auto 22px;
  padding: 10px 18px;
  border: 1px solid var(--cyan);
  color: var(--paper);
  font-size: 14px;
  letter-spacing: 0.06em;
  background: rgba(54, 241, 224, 0.06);
}

.page-about .about-tree__core .mono {
  color: var(--cyan);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-about .about-tree__branches {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-tree__branch {
  position: relative;
  padding: 18px 16px 18px 20px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--teal);
  background: var(--panel);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .about-tree__branch:hover,
.page-about .about-tree__branch:focus-visible {
  transform: translateY(-4px);
  border-color: var(--teal);
  box-shadow: var(--glow);
  outline: none;
}

.page-about .about-tree__node {
  display: inline-block;
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.16em;
  margin-bottom: 6px;
}

.page-about .about-tree__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-tree__text {
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-layers {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-about .about-layers__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(14px, 2.4vw, 20px) 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .about-layers__row:first-child {
  border-top: 1px dashed var(--line-soft);
}

.page-about .about-layers__no {
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.12em;
  padding-top: 3px;
}

.page-about .about-layers__title {
  margin: 0 0 8px;
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-layers__text {
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.85;
  max-width: 62ch;
}

.page-about .about-network {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-network__node {
  position: relative;
  padding: clamp(16px, 2.6vw, 22px);
  border: 1px solid var(--line);
  background: var(--about-panel-grad);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-about .about-network__node::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  opacity: 0.7;
}

.page-about .about-network__node:hover,
.page-about .about-network__node:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--glow);
  outline: none;
}

.page-about .about-network__no {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.16em;
  margin-bottom: 6px;
}

.page-about .about-network__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .about-network__text {
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-honor {
  border: 1px solid rgba(243, 188, 87, 0.36);
  background: linear-gradient(152deg, rgba(243, 188, 87, 0.08), rgba(11, 31, 51, 0.9));
  padding: clamp(18px, 3vw, 26px);
}

.page-about .about-honor__label {
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.18em;
  margin: 0 0 12px;
}

.page-about .about-honor__list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-honor__list li {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
  padding-left: 14px;
  border-left: 1px solid rgba(243, 188, 87, 0.4);
}

.page-about .about-honor__list strong {
  color: var(--gold);
  font-weight: 500;
}

.page-about .about-honor__note {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
}

.page-about .about-support {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-support__contacts,
.page-about .about-support__promise {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: clamp(18px, 3vw, 26px);
}

.page-about .about-support__heading {
  margin: 0 0 16px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .about-support__list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-support__item {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-soft);
}

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

.page-about .about-support__item dt {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-about .about-support__item dd {
  margin: 0;
  color: var(--paper);
  font-size: 15px;
  line-height: 1.7;
  word-break: break-word;
}

.page-about .about-support__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-support__steps li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
  align-items: start;
}

.page-about .about-support__steps .mono {
  color: var(--teal);
  font-size: 12px;
  letter-spacing: 0.12em;
  padding-top: 2px;
}

.page-about .about-support__cta {
  display: inline-block;
}

@media (min-width: 640px) {
  .page-about .about-network {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-timeline__item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(250px, 306px);
    align-items: start;
  }

  .page-about .about-body {
    grid-template-columns: var(--about-rail-width) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-rail {
    position: sticky;
    top: 24px;
    align-self: start;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 10px;
  }

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

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

  .page-about .about-support {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 1120px) {
  .page-about .about-hero__title {
    line-height: 1.06;
  }

  .page-about .about-layers__row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-timeline__item,
  .page-about .about-tree__branch,
  .page-about .about-network__node,
  .page-about .about-rail__link,
  .page-about .about-link {
    transition: none;
  }

  .page-about .about-timeline__item:hover,
  .page-about .about-timeline__item:focus-within,
  .page-about .about-tree__branch:hover,
  .page-about .about-tree__branch:focus-visible,
  .page-about .about-network__node:hover,
  .page-about .about-network__node:focus-visible {
    transform: none;
  }
}
<<<END>>>