.page-about {
  --about-tab: var(--copper);
  --about-card: rgba(19, 44, 68, 0.72);
  background: var(--night);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-mast {
  position: relative;
  padding-top: clamp(1.4rem, 3.5vw, 2.2rem);
  padding-bottom: clamp(0.4rem, 1.5vw, 1rem);
  background:
    radial-gradient(120% 80% at 88% 0%, rgba(243, 162, 75, 0.22), transparent 62%),
    radial-gradient(90% 70% at 6% 18%, rgba(79, 209, 197, 0.1), transparent 58%),
    linear-gradient(180deg, var(--ink) 0%, var(--night) 66%, var(--night) 100%);
}

.page-about .about-mast-inner {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumb {
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .about-kicker {
  color: var(--neon);
  letter-spacing: 0.16em;
  margin: 0 0 0.9rem;
}

.page-about .about-h1 {
  font-family: var(--font-route);
  font-weight: 700;
  font-size: var(--step-h1);
  line-height: 1.12;
  letter-spacing: 0.03em;
  margin: 0 0 1.1rem;
  max-width: 22ch;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-lede {
  max-width: 54ch;
  margin: 0;
  font-size: clamp(0.98rem, 1.5vw, 1.08rem);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: clamp(1.8rem, 4vw, 2.8rem);
  padding-top: clamp(1rem, 2.4vw, 1.4rem);
  border-top: 1px solid var(--line);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
}

.page-about .about-stat-num {
  font-family: var(--font-route);
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: clamp(1.5rem, 5vw, 2.4rem);
  line-height: 1;
  color: var(--amber);
}

.page-about .about-stat-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--mist);
  line-height: 1.5;
}

.page-about .about-curve {
  display: block;
  width: 100%;
  height: clamp(44px, 7vw, 86px);
  margin-top: clamp(1rem, 2.6vw, 1.8rem);
}

.page-about .about-body {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(1.6rem, 4vw, 3rem) var(--gutter) clamp(3rem, 7vw, 5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-about .about-rail {
  position: relative;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.9rem;
}

.page-about .about-rail-title {
  margin: 0 0 0.6rem;
  color: var(--mist);
  letter-spacing: 0.12em;
}

.page-about .about-toc {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.35rem;
  scrollbar-width: thin;
}

.page-about .about-toc .toc-link {
  flex: 0 0 auto;
  display: inline-block;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-about .about-toc .toc-link:hover,
.page-about .about-toc .toc-link:focus-visible {
  color: var(--paper);
  border-color: var(--lamp);
  outline: none;
}

.page-about .about-toc .toc-link[aria-current="true"] {
  color: var(--ink);
  background: var(--lamp);
  border-color: var(--lamp);
}

.page-about .about-flow {
  display: grid;
  gap: clamp(2.4rem, 6vw, 4.2rem);
  min-width: 0;
}

.page-about .about-section {
  scroll-margin-top: 7rem;
  min-width: 0;
}

.page-about .about-section-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
}

.page-about .about-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.1rem;
  padding: 0 0.45rem;
  border-radius: 10px;
  background: var(--sign-red);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}

.page-about .about-h2 {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: var(--step-h2);
  line-height: 1.32;
  letter-spacing: 0.01em;
  margin: 0;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-section-lede {
  margin: 0 0 1.4rem;
  max-width: 58ch;
  color: var(--mist);
  line-height: 1.8;
}

.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 1.8rem);
  align-items: start;
}

.page-about .about-prose p {
  margin: 0 0 1rem;
  line-height: 1.85;
  color: var(--paper);
}

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

.page-about .about-list {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-about .about-list li {
  position: relative;
  padding-left: 1.15rem;
  line-height: 1.75;
  color: var(--mist);
  font-size: 0.96rem;
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 2px;
  background: var(--lamp);
}

.page-about .about-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--alley-deep);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.92) brightness(0.94);
}

.page-about .about-figure .media-caption {
  padding: 0.7rem 1rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  color: var(--mist);
  border-top: 1px solid var(--line);
}

.page-about .about-figure--wide,
.page-about .about-figure--team {
  margin-top: 0.4rem;
  margin-bottom: 1.6rem;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  position: relative;
}

.page-about .about-stop {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.55rem;
  padding: 1.05rem 1.1rem 1.1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--copper);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: linear-gradient(180deg, var(--about-card), rgba(15, 37, 55, 0.85));
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-about .about-stop:hover {
  border-color: var(--line-strong);
  border-left-color: var(--lamp);
  transform: translateY(-2px);
}

.page-about .about-stop-year {
  font-family: var(--font-route);
  font-weight: 700;
  font-size: clamp(1.6rem, 5vw, 2rem);
  line-height: 1;
  letter-spacing: 0.07em;
  color: var(--lamp);
}

.page-about .about-stop-title {
  font-family: var(--font-editorial);
  font-size: var(--step-h3);
  font-weight: 600;
  line-height: 1.45;
  margin: 0 0 0.4rem;
  color: var(--paper);
}

.page-about .about-stop-body p {
  margin: 0 0 0.7rem;
  color: var(--mist);
  line-height: 1.75;
  font-size: 0.95rem;
}

.page-about .about-accordion {
  margin-top: 0.2rem;
}

.page-about .about-accordion .accordion-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.32rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--neon);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-about .about-accordion .accordion-trigger:hover,
.page-about .about-accordion .accordion-trigger:focus-visible {
  border-color: var(--neon);
  background: rgba(79, 209, 197, 0.1);
  outline: none;
}

.page-about .about-accordion .accordion-trigger[aria-expanded="true"] {
  border-color: var(--lamp);
  color: var(--amber);
  background: rgba(243, 162, 75, 0.1);
}

.page-about .about-accordion .accordion-icon {
  width: 0.42rem;
  height: 0.42rem;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
}

.page-about .about-accordion .accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(-135deg);
}

.page-about .about-accordion .accordion-panel {
  margin-top: 0.6rem;
  padding: 0.75rem 0.9rem;
  border-left: 2px solid var(--neon);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(79, 209, 197, 0.07);
  color: var(--mist);
  font-size: 0.92rem;
  line-height: 1.8;
}

.page-about .about-folders {
  list-style: none;
  margin: 0 0 1.6rem;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.3rem;
}

.page-about .about-folder {
  position: relative;
  padding: 1.9rem 1.1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--alley) 0%, var(--alley-deep) 100%);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .about-folder:hover {
  border-color: var(--lamp);
  transform: translateY(-3px);
  box-shadow: 0 14px 28px rgba(6, 17, 28, 0.55);
}

.page-about .about-folder-tab {
  position: absolute;
  top: 0;
  left: 1rem;
  transform: translateY(-50%);
  padding: 0.26rem 0.7rem;
  border-radius: var(--radius-pill);
  background: var(--about-tab);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.page-about .about-folder-num {
  display: block;
  font-family: var(--font-route);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 1.9rem);
  line-height: 1;
  letter-spacing: 0.05em;
  color: var(--amber);
  margin-bottom: 0.45rem;
}

.page-about .about-folder-title {
  font-family: var(--font-editorial);
  font-size: 1.02rem;
  font-weight: 600;
  margin: 0 0 0.45rem;
  color: var(--paper);
  line-height: 1.5;
}

.page-about .about-folder p {
  margin: 0;
  color: var(--mist);
  font-size: 0.92rem;
  line-height: 1.75;
}

.page-about .about-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 1.8rem);
  align-items: start;
  margin-bottom: 1.5rem;
}

.page-about .about-panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.1rem;
  background: rgba(19, 44, 68, 0.7);
}

.page-about .about-panel-label {
  margin: 0 0 0.75rem;
  color: var(--neon);
  letter-spacing: 0.12em;
}

.page-about .about-panel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-about .about-panel-list li {
  color: var(--mist);
  font-size: 0.92rem;
  line-height: 1.7;
  padding-left: 0.9rem;
  border-left: 2px solid rgba(243, 162, 75, 0.55);
}

.page-about .about-panel-list strong {
  display: block;
  color: var(--amber);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  margin-bottom: 0.2rem;
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
}

.page-about .about-step {
  padding: 0.95rem 1.05rem;
  border-left: 3px solid var(--neon);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(79, 209, 197, 0.07);
}

.page-about .about-step-label {
  color: var(--neon);
  letter-spacing: 0.12em;
}

.page-about .about-step-title {
  font-family: var(--font-editorial);
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0.35rem 0 0.35rem;
  color: var(--paper);
}

.page-about .about-step p {
  margin: 0;
  color: var(--mist);
  font-size: 0.92rem;
  line-height: 1.75;
}

.page-about .about-reach {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.2rem, 3vw, 1.8rem);
  align-items: start;
}

.page-about .about-inline-link {
  color: var(--amber);
  text-decoration: underline;
  text-decoration-color: rgba(255, 201, 120, 0.45);
  text-underline-offset: 0.22em;
  transition: color 0.18s var(--ease), text-decoration-color 0.18s var(--ease);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--paper);
  text-decoration-color: var(--lamp);
  outline: none;
}

.page-about .about-partners {
  padding: 1.15rem 1.1rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  background: rgba(15, 37, 55, 0.8);
}

.page-about .about-tagrow {
  list-style: none;
  margin: 0 0 0.9rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-partners-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.75;
  color: var(--mist);
  letter-spacing: 0.02em;
}

.page-about .about-section--last {
  padding-bottom: 0.5rem;
}

.page-about .about-close {
  padding: clamp(1.3rem, 4vw, 2.4rem);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(243, 162, 75, 0.18), transparent 62%),
    radial-gradient(100% 120% at 100% 100%, rgba(79, 209, 197, 0.12), transparent 60%),
    var(--alley);
}

.page-about .about-close-text {
  margin: 0 0 1rem;
  max-width: 60ch;
  line-height: 1.9;
  color: var(--paper);
}

.page-about .about-close-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.4rem;
  margin-top: 1.3rem;
}

.page-about .about-close-links .link-arrow {
  color: var(--amber);
  font-size: 0.94rem;
  transition: color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .about-close-links .link-arrow:hover,
.page-about .about-close-links .link-arrow:focus-visible {
  color: var(--paper);
  transform: translateX(3px);
  outline: none;
}

@media (min-width: 600px) {
  .page-about .about-folders {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-content-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .about-reach {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .page-about .about-figure--wide {
    margin-bottom: 2rem;
  }
}

@media (min-width: 980px) {
  .page-about .about-body {
    grid-template-columns: 216px minmax(0, 1fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 3.4rem);
  }

  .page-about .about-rail {
    position: sticky;
    top: 6.5rem;
    border-bottom: none;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
    padding-left: 1rem;
  }

  .page-about .about-toc {
    flex-direction: column;
    overflow: visible;
    gap: 0.35rem;
    padding-bottom: 0;
  }

  .page-about .about-toc .toc-link {
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    padding: 0.36rem 0.7rem;
  }

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

  .page-about .about-stop {
    grid-template-columns: 5.5rem minmax(0, 1fr);
    gap: 1.2rem;
    align-items: start;
    padding: 1.2rem 1.4rem 1.25rem;
  }

  .page-about .about-stop-year {
    font-size: 2.1rem;
    padding-top: 0.15rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stop,
  .page-about .about-folder,
  .page-about .about-close-links .link-arrow,
  .page-about .about-accordion .accordion-icon {
    transition: none;
  }

  .page-about .about-stop:hover,
  .page-about .about-folder:hover,
  .page-about .about-close-links .link-arrow:hover {
    transform: none;
  }
}
<<<END>>>