.page-about {
  --rail-w: 208px;
  --about-pad: 18px;
  padding-bottom: 56px;
}

.page-about .breadcrumb {
  padding-block: 18px;
  font-size: 13px;
}

.page-about .about-masthead {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-title {
  margin: 12px 0 18px;
  font-size: clamp(30px, 6.4vw, 58px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 17em;
}

.page-about .about-lead {
  max-width: 40rem;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.7;
  color: var(--paper);
  opacity: 0.88;
}

.page-about .about-cta {
  margin-top: 24px;
  gap: 12px;
}

.page-about .about-stats {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.page-about .about-stat {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.page-about .about-stat__num {
  display: block;
  font-size: clamp(24px, 4.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-stat__num--amber {
  color: var(--amber);
}

.page-about .about-stat__key {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--muted);
}

.page-about .about-body {
  margin-top: 36px;
}

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

.page-about .year-rail-wrap {
  display: none;
}

.page-about .story-flow {
  min-width: 0;
}

.page-about .about-section {
  padding-block: 30px;
  border-top: 1px solid var(--line);
}

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

.page-about .about-section h2,
.page-about .about-wide h2 {
  margin: 10px 0 16px;
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-about .about-section > p,
.page-about .about-wide > p {
  max-width: 40rem;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
}

.page-about .about-section > p + p,
.page-about .about-wide > p + p {
  margin-top: 14px;
}

.page-about .about-wide a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .flow-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 40rem;
}

.page-about .flow-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
}

.page-about .flow-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}

.page-about .aside-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--muted);
}

.page-about .about-figure {
  margin: 24px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  object-fit: cover;
}

.page-about .about-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .season-band {
  margin-block: 28px;
  padding: 26px 18px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-top: 1px solid var(--line);
}

.page-about .season-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 24px;
}

.page-about .season-item {
  position: relative;
  min-width: 0;
  padding: 2px 4px 2px 0;
  transition: background-color 200ms ease;
}

.page-about .season-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
}

.page-about .season-item:hover::before {
  background: var(--orange);
}

.page-about .season-year {
  display: block;
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-about .season-name {
  display: block;
  margin-top: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .season-desc {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  overflow-wrap: break-word;
}

.page-about .step-list {
  list-style: none;
  counter-reset: step;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  max-width: 40rem;
}

.page-about .step-list li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .step-list li::before {
  content: counter(step, decimal-leading-zero);
  grid-column: 1;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--ice);
  line-height: 1.5;
}

.page-about .step-body {
  grid-column: 2;
  grid-row: 1;
  min-width: 0;
}

.page-about .step-body strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
  line-height: 1.5;
}

.page-about .step-body span {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-wide {
  margin-top: 44px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-about .partner-card {
  background: var(--ink-700);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  padding: 18px;
}

.page-about .partner-card__num {
  display: block;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .partner-card__num--amber {
  color: var(--amber);
}

.page-about .partner-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .join-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-about .join-card {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-top: 2px solid var(--line);
  padding: 20px;
  min-width: 0;
}

.page-about .join-card--primary {
  border-top-color: var(--orange);
}

.page-about .join-card .card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .join-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  overflow-wrap: break-word;
}

.page-about .join-mail {
  font-size: 13px;
  color: var(--cyan);
}

.page-about .join-card .cluster {
  margin-top: 16px;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.page-about .copy-status {
  font-size: 12px;
  color: var(--cyan);
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .season-band {
    padding: 30px 24px;
  }
}

@media (min-width: 960px) {
  .page-about {
    --about-pad: 0px;
    padding-bottom: 72px;
  }

  .page-about .about-masthead {
    padding-bottom: 44px;
  }

  .page-about .about-body {
    margin-top: 48px;
  }

  .page-about .story-grid {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    column-gap: 56px;
  }

  .page-about .year-rail-wrap {
    display: block;
  }

  .page-about .year-rail {
    position: sticky;
    top: calc(var(--header-h, 64px) + 28px);
    border-left: 1px solid var(--line);
    padding-left: 20px;
  }

  .page-about .rail-title {
    margin-bottom: 16px;
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--muted);
  }

  .page-about .year-rail ol {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 14px;
  }

  .page-about .year-rail a {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
    font-size: 13px;
    line-height: 1.4;
    color: var(--muted);
    text-decoration: none;
    transition: color 200ms ease;
  }

  .page-about .year-rail__y {
    font-size: 16px;
    font-weight: 700;
    color: var(--paper);
    transition: color 200ms ease;
  }

  .page-about .year-rail a:hover,
  .page-about .year-rail a:hover .year-rail__y,
  .page-about .year-rail a.is-active,
  .page-about .year-rail a.is-active .year-rail__y,
  .page-about .year-rail a[aria-current="true"],
  .page-about .year-rail a[aria-current="true"] .year-rail__y {
    color: var(--cyan);
  }

  .page-about .year-rail a:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
  }

  .page-about .about-section {
    padding-block: 40px;
  }

  .page-about .season-band {
    margin-block: 34px;
    padding: 36px 32px;
  }

  .page-about .season-list {
    padding-left: 26px;
    gap: 28px;
  }

  .page-about .season-item::before {
    left: -30px;
  }

  .page-about .season-year {
    font-size: 28px;
  }

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

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

  .page-about .about-wide {
    margin-top: 56px;
    padding-top: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .season-item,
  .page-about .year-rail a,
  .page-about .year-rail__y {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>