.page-about {
  --about-card-bg: var(--ink-2);
  --about-text-soft: rgba(244, 241, 234, 0.76);
  --about-text-faint: rgba(244, 241, 234, 0.62);
  --about-ink-soft: rgba(18, 20, 23, 0.74);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(40px, 7vw, 80px);
  overflow-x: hidden;
}

.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 28px) 0 clamp(32px, 5vw, 56px);
  background:
    radial-gradient(92% 72% at 88% -12%, rgba(255, 90, 31, 0.22), transparent 62%),
    radial-gradient(64% 54% at 0% 108%, rgba(45, 125, 255, 0.14), transparent 72%),
    var(--ink);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(20px, 4vw, 40px);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--smoke);
}

.page-about .about-hero .breadcrumb a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-hero .breadcrumb a:hover,
.page-about .about-hero .breadcrumb a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

.page-about .about-hero h1 {
  margin: 12px 0 18px;
  max-width: 11em;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 7.6vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.page-about .about-hero-intro {
  max-width: 34em;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--about-text-soft);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .about-stats > div {
  padding-top: 10px;
  border-top: 2px solid var(--orange);
  min-width: 0;
}

.page-about .about-stats > div:nth-child(3) {
  border-top-color: var(--blue);
}

.page-about .about-stats > div:nth-child(4) {
  border-top-color: var(--mint);
}

.page-about .about-stats dt {
  margin: 0 0 4px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--smoke);
}

.page-about .about-stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.15;
  color: var(--paper);
  word-break: break-word;
}

.page-about .media-frame {
  position: relative;
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--ink-2);
}

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

.page-about .media-frame__coord {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 4px 9px;
  border-radius: 4px;
  background: rgba(18, 20, 23, 0.72);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.page-about .about-body {
  display: grid;
  gap: 24px;
  padding-top: clamp(36px, 6vw, 68px);
}

.page-about .about-index {
  display: none;
}

.page-about .about-index-label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--smoke);
}

.page-about .about-index ol {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 0 8px 12px;
  border-left: 2px solid var(--line);
  color: var(--about-text-faint);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-index a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--smoke);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--paper);
  border-left-color: var(--orange);
}

.page-about .about-sections {
  display: grid;
  gap: clamp(40px, 6.5vw, 84px);
  min-width: 0;
}

.page-about .about-block {
  scroll-margin-top: calc(var(--header-h) + 24px);
  min-width: 0;
}

.page-about .about-h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(25px, 4.2vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-about .about-h2 + .about-lead {
  margin-top: 0;
}

.page-about .about-lead {
  max-width: 38em;
  margin: 0 0 clamp(20px, 3vw, 32px);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-lead--light {
  color: rgba(244, 241, 234, 0.72);
}

.page-about .about-paper {
  padding: clamp(22px, 4vw, 44px);
  border-radius: var(--radius-l);
  background: var(--paper);
  color: var(--ink);
}

.page-about .about-paper .about-lead {
  color: var(--about-ink-soft);
}

.page-about .about-route-svg {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 0 clamp(18px, 3vw, 28px);
}

.page-about .about-route-svg path {
  fill: none;
  stroke: var(--orange);
  stroke-width: 2;
  stroke-dasharray: 6 9;
  opacity: 0.55;
}

.page-about .about-route-svg circle {
  fill: var(--mint);
}

.page-about .about-route-svg circle:first-of-type {
  fill: var(--orange);
}

.page-about .about-track {
  position: relative;
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-track::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), rgba(255, 90, 31, 0.14));
}

.page-about .about-stop {
  position: relative;
  display: grid;
  gap: 6px;
  padding-left: 34px;
  min-width: 0;
}

.page-about .about-stop::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.16);
}

.page-about .about-stop-year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 26px);
  letter-spacing: 0.02em;
  color: var(--orange);
}

.page-about .about-stop-body h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-stop-body p {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-text-soft);
}

.page-about .about-route-figure {
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-teams {
  display: grid;
  gap: 14px;
}

.page-about .about-team {
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line-dark);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius-m);
  background: var(--ink);
  color: var(--paper);
  min-width: 0;
  transition: transform 0.2s var(--ease);
}

.page-about .about-team--blue {
  border-left-color: var(--blue);
}

.page-about .about-team--mint {
  border-left-color: var(--mint);
}

.page-about .about-team-num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 46px);
  line-height: 1;
  color: var(--orange);
}

.page-about .about-team--blue .about-team-num {
  color: var(--blue);
}

.page-about .about-team--mint .about-team-num {
  color: var(--mint);
}

.page-about .about-team h3 {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-size: 17px;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-team p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-text-soft);
}

.page-about .about-team-extra {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--about-text-faint);
}

.page-about .about-process {
  display: grid;
  gap: clamp(22px, 4vw, 38px);
  align-items: start;
}

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

.page-about .about-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  background: var(--ink-2);
}

.page-about .about-step-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.2;
  color: var(--orange);
}

.page-about .about-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-text-soft);
}

.page-about .about-result {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px solid rgba(87, 214, 163, 0.36);
  border-radius: var(--radius-s);
  background: rgba(87, 214, 163, 0.12);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

.page-about .about-pulse {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(87, 214, 163, 0.18);
}

.page-about .about-process-figure {
  margin: 0;
}

.page-about .about-commute {
  padding: clamp(22px, 4vw, 44px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background:
    linear-gradient(150deg, rgba(255, 90, 31, 0.13), transparent 52%),
    var(--deep);
}

.page-about .about-commute-grid {
  display: grid;
  gap: 18px;
}

.page-about .about-clock {
  padding-top: 12px;
  border-top: 2px solid var(--orange);
  min-width: 0;
}

.page-about .about-clock--blue {
  border-top-color: var(--blue);
}

.page-about .about-clock--mint {
  border-top-color: var(--mint);
}

.page-about .about-clock-big {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(19px, 2.6vw, 26px);
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .about-clock h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 15.5px;
  line-height: 1.4;
  color: var(--amber);
}

.page-about .about-clock--blue h3 {
  color: var(--paper);
}

.page-about .about-clock--mint h3 {
  color: var(--paper);
}

.page-about .about-clock p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(244, 241, 234, 0.72);
}

.page-about .about-partners {
  display: grid;
  gap: 14px;
}

.page-about .about-partner {
  padding: 16px 0 0;
  border-top: 2px solid var(--ink);
  min-width: 0;
}

.page-about .about-partner--blue {
  border-top-color: var(--blue);
}

.page-about .about-partner--mint {
  border-top-color: var(--mint);
}

.page-about .about-partner-num {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.1;
  color: var(--ink);
}

.page-about .about-partner h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 15px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

.page-about .about-archive {
  display: grid;
  gap: 10px;
}

.page-about .about-item {
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--ink-2);
}

.page-about .about-item summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: clamp(14.5px, 1.8vw, 17px);
  line-height: 1.45;
  color: var(--paper);
}

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

.page-about .about-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--orange);
}

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

.page-about .about-item-tag {
  flex: none;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(255, 90, 31, 0.16);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-about .about-item p {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--about-text-soft);
}

.page-about .about-next {
  margin-top: clamp(36px, 5vw, 64px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 2px solid var(--orange);
}

.page-about .about-next h3 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: clamp(17px, 2.2vw, 22px);
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.page-about .about-next-links .link {
  color: var(--amber);
  font-size: 14px;
}

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

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

@media (min-width: 820px) {
  .page-about .about-teams {
    display: flex;
    align-items: stretch;
    gap: 14px;
  }

  .page-about .about-team:nth-child(1) {
    flex: 1.4;
  }

  .page-about .about-team:nth-child(2) {
    flex: 1.05;
  }

  .page-about .about-team:nth-child(3) {
    flex: 0.85;
  }

  .page-about .about-team:hover {
    transform: translateY(-3px);
  }

  .page-about .about-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-stop {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
    padding-left: 40px;
  }

  .page-about .about-stop::before {
    left: 8px;
  }

  .page-about .about-track::before {
    left: 13px;
  }
}

@media (hover: hover) and (min-width: 820px) {
  .page-about .about-team-extra {
    max-height: 0;
    margin-top: 0;
    padding-top: 0;
    border-top-color: transparent;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.3s var(--ease), opacity 0.24s var(--ease),
      margin-top 0.3s var(--ease), padding-top 0.3s var(--ease);
  }

  .page-about .about-team:hover .about-team-extra,
  .page-about .about-team:focus-within .about-team-extra {
    max-height: 220px;
    margin-top: 12px;
    padding-top: 10px;
    border-top-color: var(--line);
    opacity: 1;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-about .about-process {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(28px, 4vw, 48px);
  }

  .page-about .about-commute-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-index {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}
<<<END>>>