.page-about {
  --about-pad: 1.25rem;
  background:
    radial-gradient(90% 60% at 15% 0%, rgba(34, 211, 238, 0.12), transparent 60%),
    radial-gradient(70% 50% at 100% 12%, rgba(249, 115, 22, 0.09), transparent 65%),
    linear-gradient(180deg, #061426 0%, #08192e 45%, #061426 100%);
  color: var(--color-star);
  padding-bottom: 3rem;
  overflow-x: hidden;
}

.page-about .about-shell {
  width: 100%;
  max-width: var(--container-text);
  margin: 0 auto;
  padding: 0 var(--about-pad);
}

.page-about .about-intro {
  position: relative;
  padding: 2.25rem 0 3rem;
  border-bottom: 1px solid var(--color-line);
}

.page-about .about-intro::after {
  content: "";
  position: absolute;
  left: var(--about-pad);
  right: var(--about-pad);
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-cyan), transparent 55%);
  opacity: 0.75;
}

.page-about .breadcrumb {
  margin-bottom: 1.5rem;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-mist);
}

.page-about .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--color-line);
}

.page-about .breadcrumb-link {
  color: var(--color-cyan-soft);
  text-decoration: none;
}

.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  color: var(--color-star);
  text-decoration: underline;
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-cyan);
  margin: 0;
}

.page-about .about-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.85rem, 7vw, 3.5rem);
  line-height: 1.28;
  letter-spacing: 0.05em;
  margin: 0.75rem 0 1.1rem;
  color: var(--color-star);
  background: linear-gradient(102deg, #EAF8FF 8%, #7DEBFA 58%, #22D3EE 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-about .about-lede {
  max-width: 62ch;
  margin: 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-mist);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 0;
}

.page-about .about-stat {
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(16, 54, 92, 0.6), rgba(6, 20, 38, 0.4));
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.45rem;
  letter-spacing: 0.04em;
  color: var(--color-cyan-soft);
  line-height: 1.2;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--color-mist);
}

.page-about .rail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  padding-top: 2rem;
}

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

.page-about .rail-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-mist);
}

.page-about .rail-list {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0 0 0.35rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--color-line);
  scrollbar-width: thin;
}

.page-about .rail-link {
  display: block;
  white-space: nowrap;
  padding: 0.4rem 0.65rem;
  font-size: 0.82rem;
  color: var(--color-mist);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  color: var(--color-star);
  background: rgba(34, 211, 238, 0.12);
}

.page-about .rail-num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
  margin-right: 0.35rem;
}

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

.page-about .about-section {
  padding: 0.5rem 0 0;
  scroll-margin-top: 7.5rem;
}

.page-about .about-section + .about-section {
  margin-top: 2.25rem;
  padding-top: 2.25rem;
  border-top: 1px dashed rgba(30, 74, 109, 0.9);
}

.page-about .section-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--color-orange);
}

.page-about .about-h2 {
  margin: 0.5rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.45rem, 5vw, 2.3rem);
  line-height: 1.32;
  letter-spacing: 0.05em;
  color: var(--color-star);
}

.page-about .about-p {
  max-width: 68ch;
  margin: 0 0 1rem;
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--color-mist);
}

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

.page-about .about-inline-link {
  color: var(--color-cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(125, 235, 250, 0.4);
}

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

.page-about .about-figure {
  margin: 1.5rem 0 0;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-line);
  background: rgba(11, 42, 74, 0.5);
}

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

.page-about .about-figure figcaption {
  padding: 0.65rem 0.95rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--color-mist);
  border-top: 1px solid var(--color-line);
  background: rgba(6, 20, 38, 0.65);
}

.page-about .lane-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.page-about .lane {
  position: relative;
  overflow: hidden;
  padding: 1.2rem 1.15rem 1.3rem;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(16, 54, 92, 0.88), rgba(11, 42, 74, 0.42));
}

.page-about .lane::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--color-cyan);
}

.page-about .lane::after {
  content: "";
  position: absolute;
  right: -18px;
  bottom: -18px;
  width: 54px;
  height: 54px;
  border: 1px solid rgba(34, 211, 238, 0.28);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .lane--subscribe::before {
  background: var(--color-green);
}

.page-about .lane--access::before {
  background: var(--color-orange);
}

.page-about .lane-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  color: var(--color-cyan);
}

.page-about .lane--subscribe .lane-tag {
  color: var(--color-green);
}

.page-about .lane--access .lane-tag {
  color: var(--color-orange);
}

.page-about .lane-title {
  margin: 0.55rem 0 0.55rem;
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--color-star);
}

.page-about .lane-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.82;
  color: var(--color-mist);
}

.page-about .timeline {
  position: relative;
  margin-top: 1.75rem;
  padding-left: 1.85rem;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--color-cyan), var(--color-orange) 58%, var(--color-green));
  opacity: 0.7;
}

.page-about .tl-item {
  position: relative;
  padding-bottom: 1.85rem;
  scroll-margin-top: 7.5rem;
}

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

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -1.85rem;
  top: 0.45rem;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-space);
  border: 2px solid var(--color-cyan);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.12);
}

.page-about .tl-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  letter-spacing: 0.12em;
  color: var(--color-cyan-soft);
}

.page-about .tl-title {
  margin: 0.35rem 0 0.4rem;
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--color-star);
}

.page-about .tl-text {
  max-width: 62ch;
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--color-mist);
}

.page-about .spec-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.page-about .spec-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.3rem;
  padding: 0.85rem 0;
  border-bottom: 1px dashed rgba(30, 74, 109, 0.9);
}

.page-about .spec-row:first-child {
  border-top: 1px dashed rgba(30, 74, 109, 0.9);
}

.page-about .spec-k {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--color-cyan);
}

.page-about .spec-v {
  font-size: 0.93rem;
  line-height: 1.82;
  color: var(--color-star);
}

.page-about .crew-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.page-about .crew {
  padding: 1.05rem 1.1rem;
  border-left: 2px solid var(--color-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(11, 42, 74, 0.5);
}

.page-about .crew h3 {
  margin: 0 0 0.4rem;
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--color-star);
}

.page-about .crew p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.8;
  color: var(--color-mist);
}

.page-about .coop {
  display: grid;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-about .coop-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: rgba(16, 54, 92, 0.42);
  overflow: hidden;
}

.page-about .coop-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1.1rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.96rem;
  color: var(--color-star);
}

.page-about .coop-item summary::-webkit-details-marker {
  display: none;
}

.page-about .coop-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--color-cyan);
}

.page-about .coop-item[open] summary::after {
  content: "\2013";
}

.page-about .coop-item summary:hover,
.page-about .coop-item summary:focus-visible {
  background: rgba(34, 211, 238, 0.1);
}

.page-about .coop-body {
  padding: 0 1.1rem 1.1rem;
  border-top: 1px solid rgba(30, 74, 109, 0.9);
  padding-top: 0.85rem;
}

.page-about .coop-body p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.85;
  color: var(--color-mist);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1.5rem 1.25rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(34, 211, 238, 0.28);
  background:
    radial-gradient(120% 150% at 0% 0%, rgba(34, 211, 238, 0.18), transparent 58%),
    linear-gradient(140deg, rgba(16, 54, 92, 0.72), rgba(6, 20, 38, 0.92));
  box-shadow: var(--shadow-cyan);
}

.page-about .about-cta p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--color-star);
  max-width: 46ch;
}

.page-about .about-more {
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .page-about {
    --about-pad: 2rem;
  }

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

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

  .page-about .spec-row {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 1.25rem;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about {
    --about-pad: 2.5rem;
    padding-bottom: 4rem;
  }

  .page-about .about-intro {
    padding: 3rem 0 3.5rem;
  }

  .page-about .rail-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 3rem;
    padding-top: 2.75rem;
  }

  .page-about .rail-panel {
    position: sticky;
    top: 7.5rem;
  }

  .page-about .rail-list {
    display: block;
    overflow: visible;
    border-bottom: 0;
    border-left: 1px solid var(--color-line);
    padding: 0.25rem 0;
  }

  .page-about .rail-link {
    position: relative;
    border-radius: 0;
    padding: 0.5rem 0 0.5rem 0.95rem;
    white-space: normal;
  }

  .page-about .rail-link::before {
    content: "";
    position: absolute;
    left: -4px;
    top: 50%;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-line);
    transform: translateY(-50%);
    transition: background-color 180ms var(--ease), box-shadow 180ms var(--ease);
  }

  .page-about .rail-link:hover::before,
  .page-about .rail-link:focus-visible::before {
    background: var(--color-cyan);
    box-shadow: 0 0 12px rgba(34, 211, 238, 0.75);
  }

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

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

  .page-about .about-p,
  .page-about .about-lede {
    font-size: 1.02rem;
  }
}

@media (min-width: 1180px) {
  .page-about .rail-layout {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 4rem;
  }

  .page-about .about-h2 {
    letter-spacing: 0.06em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .rail-link,
  .page-about .rail-link::before,
  .page-about .coop-item summary {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>