.page-about {
  --about-bg-grid: linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  --about-bg-size: 72px 72px;
  background-color: var(--ink-deep);
  color: var(--fog);
  font-family: var(--font-body);
  line-height: 1.75;
  padding-bottom: var(--s6);
}

.page-about .crumbs {
  padding: var(--s3) 0 var(--s1);
}

.page-about .crumbs ol {
  display: flex;
  gap: var(--s2);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--fs-14);
  color: var(--muted);
}

.page-about .crumbs li + li::before {
  content: "/";
  margin-right: var(--s2);
  color: var(--line);
}

.page-about .crumbs a {
  color: var(--cyan);
  text-decoration: none;
}

.page-about .crumbs a:hover {
  text-decoration: underline;
}

.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s4);
  padding: var(--s5) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--s3);
}

.page-about .about-hero .eyebrow {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  margin: 0 0 var(--s2);
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 16ch;
}

.page-about .about-hero__lede {
  font-size: var(--fs-18);
  color: var(--muted);
  max-width: 52ch;
  margin: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  margin-top: var(--s2);
}

.page-about .about-hero__visual .media-frame {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-black);
}

.page-about .about-dossier {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s4);
  padding-top: var(--s5);
}

.page-about .about-dossier__index {
  position: relative;
  border-left: 2px solid var(--cyan);
  padding-left: var(--s3);
}

.page-about .about-index-list {
  list-style: none;
  padding: 0;
  margin: var(--s3) 0 var(--s4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
}

.page-about .about-index-list a {
  color: var(--fog);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  padding: 6px 12px;
  border: 1px solid var(--line);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-index-list a:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-about .about-index-meta {
  display: flex;
  flex-direction: column;
  gap: var(--s1);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--muted);
}

.page-about .about-index-meta .stat-num {
  display: block;
  font-size: var(--fs-24);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1.2;
  margin-bottom: 2px;
}

.page-about .about-dossier__content {
  display: flex;
  flex-direction: column;
  gap: var(--s5);
}

.page-about .about-section {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}

.page-about .about-section__head {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
}

.page-about .about-section__head h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 800;
  line-height: 1.15;
  margin: 0;
}

.page-about .about-section__head p {
  color: var(--muted);
  font-size: var(--fs-16);
  max-width: 62ch;
  margin: 0;
}

.page-about .about-origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

.page-about .about-origin-card {
  background: var(--ink-panel);
  border: 1px solid var(--line);
  padding: var(--s3);
  display: flex;
  flex-direction: column;
  gap: var(--s2);
}

.page-about .about-origin-card h3 {
  font-size: var(--fs-18);
  font-weight: 700;
  margin: 0;
}

.page-about .about-origin-card p {
  font-size: var(--fs-14);
  color: var(--muted);
  margin: 0;
}

.page-about .timeline-track {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: var(--s3);
}

.page-about .timeline-track::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--line);
}

.page-about .timeline-node {
  position: relative;
  padding-left: var(--s3);
  padding-bottom: var(--s3);
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--s3) + 3px);
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--ink-deep);
  border: 2px solid var(--muted);
  border-radius: 0;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .timeline-node[open]::before {
  border-color: var(--cyan);
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(47, 243, 208, 0.15);
}

.page-about .timeline-node summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--s2);
  cursor: pointer;
  list-style: none;
  padding: var(--s2) 0;
  transition: color 0.2s var(--ease);
}

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

.page-about .timeline-node summary:hover .timeline-node__title {
  color: var(--cyan);
}

.page-about .timeline-node__year {
  color: var(--cyan);
  font-size: var(--fs-14);
  min-width: 48px;
}

.page-about .timeline-node__title {
  font-size: var(--fs-18);
  font-weight: 700;
  transition: color 0.2s var(--ease);
}

.page-about .timeline-node__body {
  padding: var(--s2) 0 0;
}

.page-about .timeline-node__body p {
  font-size: var(--fs-14);
  color: var(--muted);
  margin: 0 0 var(--s2);
  max-width: 62ch;
}

.page-about .timeline-node--with-visual .timeline-node__body {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}

.page-about .timeline-node--with-visual .media-frame {
  margin: 0;
  border: 1px solid var(--line);
  max-width: 480px;
}

.page-about .workflow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

.page-about .workflow-step {
  background: var(--ink-panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--coral);
  padding: var(--s3);
  display: flex;
  flex-direction: column;
  gap: var(--s1);
}

.page-about .workflow-step__num {
  color: var(--coral-soft);
  font-size: var(--fs-24);
  font-weight: 700;
  margin-bottom: var(--s1);
}

.page-about .workflow-step h3 {
  font-size: var(--fs-18);
  font-weight: 700;
  margin: 0;
}

.page-about .workflow-step p {
  font-size: var(--fs-14);
  color: var(--muted);
  margin: 0;
}

.page-about .workflow-visual {
  margin-top: var(--s3);
}

.page-about .workflow-visual .media-frame {
  margin: 0;
  border: 1px solid var(--line);
}

.page-about .team-matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

.page-about .team-role-card {
  background: var(--ink-panel);
  border: 1px solid var(--line);
  padding: var(--s3);
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  position: relative;
  overflow: hidden;
}

.page-about .team-role-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, transparent 50%, var(--cyan) 50%);
  opacity: 0.12;
}

.page-about .team-role-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s2);
}

.page-about .team-role-card__header .mono-label {
  color: var(--muted);
  font-size: var(--fs-12);
}

.page-about .team-role-card p {
  font-size: var(--fs-14);
  color: var(--muted);
  margin: 0;
}

.page-about .ecosystem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

.page-about .ecosystem-card {
  border-left: 3px solid var(--teal);
  padding: var(--s2) 0 var(--s2) var(--s3);
  display: flex;
  flex-direction: column;
  gap: var(--s1);
}

.page-about .ecosystem-card h3 {
  font-size: var(--fs-16);
  font-weight: 700;
  margin: 0;
}

.page-about .ecosystem-card p {
  font-size: var(--fs-14);
  color: var(--muted);
  margin: 0;
  max-width: 52ch;
}

.page-about .ecosystem-note {
  background: var(--ink-black);
  border: 1px solid var(--line);
  border-left: 3px solid var(--coral);
  padding: var(--s3);
  margin-top: var(--s2);
}

.page-about .ecosystem-note p {
  font-size: var(--fs-14);
  color: var(--fog);
  margin: 0;
  max-width: 72ch;
}

.page-about .honor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s3);
}

.page-about .honor-card {
  background: var(--ink-panel);
  border: 1px solid var(--line);
  padding: var(--s3);
  display: flex;
  flex-direction: column;
  gap: var(--s1);
  position: relative;
}

.page-about .honor-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--cyan);
}

.page-about .honor-card .mono-label {
  color: var(--cyan);
  font-size: var(--fs-12);
}

.page-about .honor-card h3 {
  font-size: var(--fs-16);
  font-weight: 700;
  margin: 0;
}

.page-about .honor-card p {
  font-size: var(--fs-14);
  color: var(--muted);
  margin: 0;
}

.page-about .honor-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s3);
  margin-top: var(--s3);
  padding-top: var(--s3);
  border-top: 1px solid var(--line);
}

.page-about .honor-cta p {
  font-size: var(--fs-16);
  color: var(--fog);
  margin: 0;
}

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

.page-about .media-frame__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--muted);
  margin: var(--s1) 0 0;
  padding: 0 var(--s2) var(--s2);
}

@media (min-width: 768px) {
  .page-about .about-hero {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

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

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

  .page-about .team-matrix {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (min-width: 1024px) {
  .page-about .about-dossier {
    grid-template-columns: 220px 1fr;
    gap: var(--s5);
  }

  .page-about .about-dossier__index {
    position: sticky;
    top: 120px;
    align-self: start;
    border-left: 2px solid var(--cyan);
    padding-left: var(--s3);
  }

  .page-about .about-index-list {
    flex-direction: column;
    gap: var(--s1);
  }

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

  .page-about .timeline-track {
    padding-left: var(--s4);
  }

  .page-about .timeline-node {
    padding-left: var(--s4);
  }

  .page-about .timeline-node::before {
    left: calc(-1 * var(--s4) + 3px);
  }

  .page-about .about-section--timeline .timeline-node--with-visual .timeline-node__body {
    flex-direction: row;
    align-items: flex-start;
  }

  .page-about .about-section--timeline .timeline-node--with-visual .media-frame {
    flex: 0 0 320px;
  }
}

@media (min-width: 1280px) {
  .page-about .about-hero {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .page-about .about-hero h1 {
    font-size: 72px;
  }
}
<<<END>>>
```