.page-about {
  --about-rail: 216px;
  --about-gap: clamp(20px, 3vw, 48px);
  color: var(--text);
  background: var(--bg);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-about .about-hero {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding-block: clamp(18px, 3vw, 30px) clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--line-strong);
}

.page-about h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 4.6vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--mist);
}

.page-about .hero-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .hero-facts {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
}

.page-about .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.1;
  color: var(--signal);
}

.page-about .fact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--paper);
}

.page-about .about-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--ink-900);
  overflow: hidden;
  min-width: 0;
}

.page-about .about-figure::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(169, 184, 190, 0.18);
  pointer-events: none;
  z-index: 1;
}

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

.page-about .about-figure--hero {
  aspect-ratio: 3 / 2;
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--about-gap);
  padding-block: clamp(28px, 4vw, 56px) 0;
}

.page-about .about-rail {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.page-about .rail-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper);
}

.page-about .rail-nav {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: max-content;
  gap: 0;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-about .rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 14px 10px 0;
  margin-right: 12px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

.page-about .rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper);
  transition: color var(--dur-1) var(--ease);
}

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

.page-about .rail-link:hover .rail-num,
.page-about .rail-link:focus-visible .rail-num {
  color: var(--signal);
}

.page-about .rail-meta {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-about .rail-meta-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--paper);
}

.page-about .rail-meta-value {
  font-size: 14px;
  color: var(--amber);
}

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

.page-about .about-section {
  scroll-margin-top: 92px;
  padding-block: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line);
}

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

.page-about .sec-head {
  margin-bottom: clamp(20px, 3vw, 30px);
  max-width: 72ch;
}

.page-about .sec-title {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 2.6vw, 33px);
  line-height: 1.22;
  color: var(--mist);
}

.page-about .sec-lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .ability-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ability {
  background: var(--panel);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  transition: background-color var(--dur-1) var(--ease);
}

.page-about .ability:hover {
  background: linear-gradient(rgba(110, 166, 184, 0.09), rgba(110, 166, 184, 0.09)), var(--panel);
}

.page-about .ability-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--signal);
}

.page-about .ability h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 650;
  line-height: 1.35;
  color: var(--mist);
}

.page-about .ability p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .fit-note {
  margin: 20px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--blue);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 74ch;
}

.page-about .about-figure--timeline {
  margin-bottom: clamp(22px, 3vw, 32px);
  aspect-ratio: 7 / 4;
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line-strong);
}

.page-about .tl-item {
  position: relative;
  display: grid;
  gap: 6px;
  padding-bottom: 26px;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 7px;
  width: 8px;
  height: 8px;
  background: var(--signal);
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.page-about .tl-body h3 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 650;
  line-height: 1.35;
  color: var(--mist);
}

.page-about .tl-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
  max-width: 68ch;
}

.page-about .ledger {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .ledger-cell {
  background: var(--panel);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  transition: background-color var(--dur-1) var(--ease);
}

.page-about .ledger-cell:hover {
  background: linear-gradient(rgba(255, 122, 61, 0.08), rgba(255, 122, 61, 0.08)), var(--panel);
}

.page-about .ledger-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 2.8vw, 31px);
  line-height: 1;
  color: var(--mist);
}

.page-about .ledger-num em {
  font-style: normal;
  font-size: 0.5em;
  color: var(--amber);
  margin-left: 3px;
}

.page-about .ledger-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--paper);
}

.page-about .ledger-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-about .placard {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 18px clamp(16px, 3vw, 26px);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--signal);
  background: var(--ink-900);
  display: grid;
  gap: 8px;
}

.page-about .placard-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .placard p {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.72;
  color: var(--mist);
  max-width: 60ch;
}

.page-about .reach-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
}

.page-about .about-figure--map {
  aspect-ratio: 11 / 7;
}

.page-about .reach-side {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-about .reach-hero-figure {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-about .reach-hero-num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 4.4vw, 46px);
  line-height: 1;
  color: var(--signal);
}

.page-about .reach-hero-unit {
  font-size: 15px;
  color: var(--text-dim);
}

.page-about .reach-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-about .reach-figures {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .reach-figure {
  background: var(--panel);
  padding: 14px 16px;
  min-width: 0;
}

.page-about .reach-figure dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper);
  line-height: 1.5;
}

.page-about .reach-figure dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.2vw, 25px);
  line-height: 1;
  color: var(--mist);
}

.page-about .reach-figure dd em {
  font-style: normal;
  font-size: 0.55em;
  color: var(--amber);
  margin-left: 2px;
}

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

.page-about .tag-row li {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper);
  border: 1px solid var(--line-strong);
  padding: 5px 10px;
}

.page-about .method-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .method-step {
  background: var(--panel);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  transition: background-color var(--dur-1) var(--ease);
}

.page-about .method-step:hover {
  background: linear-gradient(rgba(100, 199, 184, 0.08), rgba(100, 199, 184, 0.08)), var(--panel);
}

.page-about .step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--signal);
}

.page-about .method-step h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 650;
  line-height: 1.35;
  color: var(--mist);
}

.page-about .method-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .partner-strip {
  margin-top: clamp(22px, 3vw, 30px);
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  background: var(--ink-900);
  display: grid;
  gap: 16px;
}

.page-about .partner-strip h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 650;
  color: var(--mist);
}

.page-about .partner-strip p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 72ch;
}

.page-about .partner-link {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 3px;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

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

.page-about .safety-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .safety-item {
  position: relative;
  background: var(--panel);
  padding: 18px 20px 18px 46px;
  min-width: 0;
}

.page-about .safety-item::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 22px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--teal);
  background: rgba(100, 199, 184, 0.28);
}

.page-about .safety-item h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 650;
  line-height: 1.35;
  color: var(--mist);
}

.page-about .safety-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .about-cta {
  margin-top: clamp(30px, 5vw, 56px);
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--line-strong);
  background: var(--ink-700);
  display: grid;
  gap: 22px;
  scroll-margin-top: 92px;
}

.page-about .about-cta h2 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1.25;
  color: var(--mist);
}

.page-about .cta-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 62ch;
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-about .cta-help {
  flex-basis: 100%;
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .cta-help a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-about .cta-help a:hover,
.page-about .cta-help a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

@media (min-width: 560px) {
  .page-about .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 720px) {
  .page-about .tl-item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 0 22px;
  }

  .page-about .tl-year {
    padding-top: 2px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .reach-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-about .cta-actions {
    justify-content: flex-end;
    max-width: 320px;
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
  }

  .page-about .about-rail {
    position: sticky;
    top: 96px;
    align-self: start;
    padding-left: 20px;
    border-left: 1px solid var(--line);
  }

  .page-about .rail-nav {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    overflow: visible;
    border-bottom: 0;
  }

  .page-about .rail-link {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
    margin-right: 0;
    padding: 9px 0;
    border-bottom: 1px solid var(--line);
    white-space: normal;
  }

  .page-about .rail-meta {
    display: flex;
  }

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

@media (min-width: 1100px) {
  .page-about .ledger {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .rail-link,
  .page-about .rail-num,
  .page-about .ability,
  .page-about .ledger-cell,
  .page-about .method-step,
  .page-about .partner-link {
    transition: none;
  }
}
<<<END>>>