.page-about {
  --about-text: rgba(244, 247, 242, 0.86);
  --about-cyan-soft: rgba(43, 240, 200, 0.28);
  --about-divider: rgba(168, 184, 177, 0.24);
  padding-bottom: clamp(64px, 9vw, 120px);
  background-image: repeating-linear-gradient(
    115deg,
    rgba(43, 240, 200, 0.05) 0,
    rgba(43, 240, 200, 0.05) 1px,
    transparent 1px,
    transparent 26px
  );
}

.page-about .about-crumb {
  padding-top: clamp(18px, 3vw, 32px);
}

.page-about .about-crumb .breadcrumb {
  margin: 0;
}

.page-about p {
  color: var(--about-text);
  line-height: 1.8;
  margin: 0 0 1.1em;
}

.page-about .about-open {
  margin-top: 18px;
  overflow: hidden;
}

.page-about .about-open__head {
  display: block;
  border-bottom: 1px dashed var(--about-divider);
  padding-bottom: 18px;
  margin-bottom: 22px;
}

.page-about .about-open__head .coord {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about .about-open__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0;
  max-width: 20ch;
}

.page-about .about-open__lede {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--about-text) !important;
  max-width: 62ch;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-divider);
  border: 1px solid var(--about-divider);
  margin-top: 26px;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 14px 18px;
  background: var(--panel);
}

.page-about .about-stat__num {
  font-size: clamp(24px, 3vw, 38px);
  color: var(--cyan);
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.page-about .about-stat__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--bone);
}

.page-about .about-banner {
  margin: 28px 0 0;
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(36px, 6vw, 72px);
}

.page-about .about-index {
  border-top: 2px solid var(--cyan);
  padding-top: 12px;
}

.page-about .about-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 9px 12px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--bone);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-about .about-index__link .nav-idx {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--mist);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible,
.page-about .about-index__link[aria-current] {
  color: var(--paper);
  border-bottom-color: var(--cyan);
  background: rgba(43, 240, 200, 0.08);
}

.page-about .about-section {
  scroll-margin-top: 130px;
  margin-bottom: clamp(56px, 9vw, 160px);
}

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

.page-about .about-section__head {
  border-top: 2px solid var(--about-cyan-soft);
  padding-top: 14px;
  margin-bottom: 24px;
}

.page-about .about-section__head .coord {
  display: inline-block;
  margin-bottom: 10px;
}

.page-about .about-section__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.005em;
  color: var(--paper);
  margin: 0;
  max-width: 26ch;
}

.page-about .about-section h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 6px;
  letter-spacing: 0.01em;
}

.page-about .about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 6px;
  padding-top: 16px;
  border-top: 1px dashed var(--about-divider);
}

.page-about .about-links a {
  color: var(--cyan);
  text-decoration: none;
  font-size: 14px;
  border-bottom: 1px solid var(--about-cyan-soft);
  padding-bottom: 2px;
}

.page-about .about-links a:hover,
.page-about .about-links a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-about .proof-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

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

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

.page-about .process {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-about .process-card {
  position: relative;
  background: var(--panel);
  border: 2px solid var(--about-cyan-soft);
  box-shadow: var(--shadow);
  padding: 16px 16px 14px;
  transition: box-shadow 220ms var(--ease), transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-about .process-card:hover {
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
  border-color: var(--cyan);
}

.page-about .process-card p {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  color: var(--bone);
}

.page-about .process-card__no {
  display: block;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-about .team-note {
  border-left: 2px solid var(--cyan);
  padding-left: 14px;
  font-size: 14px;
  color: var(--bone) !important;
}

.page-about .timeline-figure {
  margin: 0 0 clamp(26px, 4vw, 40px);
}

.page-about .timeline-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .tl-item {
  position: relative;
  border-top: 2px solid var(--cyan);
  padding-top: 18px;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(43, 240, 200, 0.14);
}

.page-about .tl-year {
  display: block;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--paper);
  margin-bottom: 10px;
}

.page-about .tl-title {
  font-size: 16px;
}

.page-about .tl-note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--bone) !important;
  margin: 0;
  transition: color 200ms var(--ease);
}

.page-about .tl-item:hover .tl-note,
.page-about .tl-item:focus-within .tl-note {
  color: var(--paper) !important;
}

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

.page-about .coop-card {
  background: var(--panel);
  border: 2px solid var(--about-cyan-soft);
  box-shadow: var(--shadow);
  padding: 20px 18px 8px;
}

.page-about .coop-card p {
  font-size: 15px;
  color: var(--about-text) !important;
}

.page-about .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .process {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

  .page-about .process-card:not(:last-child)::after {
    content: "→";
    position: absolute;
    right: -19px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--mist);
    font-size: 14px;
    line-height: 1;
  }

  .page-about .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 28px;
  }

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

@media (min-width: 1000px) {
  .page-about .about-shell {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-index {
    position: sticky;
    top: 128px;
    align-self: start;
    padding-bottom: 12px;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__link {
    white-space: normal;
    border-bottom: none;
    border-left: 2px solid transparent;
    padding: 9px 10px;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible,
  .page-about .about-index__link[aria-current] {
    border-left-color: var(--cyan);
    border-bottom-color: transparent;
  }

  .page-about .proof-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

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

  .page-about .about-section__head {
    display: grid;
    grid-template-columns: 74px minmax(0, 1fr);
    align-items: baseline;
    column-gap: 10px;
  }

  .page-about .about-section__head .coord {
    margin-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .process-card,
  .page-about .tl-note,
  .page-about .about-index__link {
    transition: none;
  }

  .page-about .process-card:hover {
    transform: none;
  }
}
<<<END>>>