.page-about {
  --about-rail: 132px;
  --about-line: rgba(36, 31, 26, 0.18);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
}

.page-about .about-hero__inner {
  padding-top: clamp(28px, 4vw, 56px);
}

.page-about .about-hero .breadcrumbs {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-soft);
  margin: 0 0 28px;
}

.page-about .about-hero .breadcrumbs a {
  color: var(--clr-lake);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

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

.page-about .about-hero__title {
  margin: 10px 0 clamp(28px, 4vw, 48px);
  color: var(--clr-ink);
  letter-spacing: -0.02em;
}

.page-about .about-hero__split {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
  padding-bottom: clamp(32px, 5vw, 64px);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 34em;
  color: var(--clr-ink);
}

.page-about .about-facts {
  margin: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-facts__row {
  display: grid;
  grid-template-columns: 5.5em minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-about .about-facts dt {
  color: var(--clr-lake);
  white-space: nowrap;
}

.page-about .about-facts dd {
  margin: 0;
  color: var(--clr-ink);
  letter-spacing: 0.02em;
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-hero__figure .figure__media {
  background: linear-gradient(160deg, var(--clr-lake-soft), var(--clr-cream));
}

/* ---------- section head ---------- */

.page-about .about-head {
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-about .about-head .h2 {
  margin: 8px 0 0;
  max-width: 24em;
}

.page-about .about-head--light .h2,
.page-about .about-head--light .eyebrow,
.page-about .about-head--light .lede {
  color: var(--clr-white);
}

.page-about .about-head--light .eyebrow::before {
  background: var(--clr-gold);
}

.page-about .about-index__lede {
  margin-top: 16px;
  max-width: 36em;
  color: rgba(251, 252, 253, 0.86);
}

/* ---------- timeline ---------- */

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: calc(var(--about-rail) - 1px);
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--about-line);
}

.page-about .timeline__item {
  display: grid;
  grid-template-columns: var(--about-rail) minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  padding: 26px 0;
  position: relative;
}

.page-about .timeline__item + .timeline__item {
  border-top: 1px solid rgba(36, 31, 26, 0.1);
}

.page-about .timeline__stamp {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 4px;
  position: relative;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-about .timeline__stamp::after {
  content: "";
  position: absolute;
  right: -6px;
  top: 10px;
  width: 11px;
  height: 11px;
  background: var(--clr-cream);
  border: 2px solid var(--clr-lake);
  border-radius: 50%;
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .timeline__item:hover .timeline__stamp::after,
.page-about .timeline__item:focus-within .timeline__stamp::after {
  background: var(--clr-gold);
  border-color: var(--clr-gold);
}

.page-about .timeline__item--pivot .timeline__stamp::after {
  background: var(--clr-lake);
  border-color: var(--clr-lake);
}

.page-about .timeline__year {
  font-size: 26px;
  font-weight: 700;
  color: var(--clr-lake);
  letter-spacing: -0.01em;
  line-height: 1;
}

.page-about .timeline__quarter {
  color: var(--clr-ember);
  font-size: 12px;
}

.page-about .timeline__body {
  max-width: 38em;
}

.page-about .timeline__title {
  margin: 0 0 10px;
  color: var(--clr-ink);
}

.page-about .timeline__body p {
  margin: 0 0 8px;
  color: var(--text-soft);
}

.page-about .timeline__note {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--clr-lake);
  border-left: 3px solid var(--clr-gold);
  padding-left: 10px;
}

.page-about .about-origin__figure {
  margin: clamp(36px, 6vw, 64px) 0 0;
}

.page-about .about-origin__figure .figure__media {
  background: linear-gradient(180deg, var(--clr-cream), var(--clr-lake-soft));
}

/* ---------- index tree ---------- */

.page-about .about-index {
  background-image: linear-gradient(180deg, rgba(7, 61, 94, 0.4), rgba(74, 58, 107, 0.35));
}

.page-about .about-index__wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 60px);
  align-items: start;
}

.page-about .index-tree {
  border-top: 1px solid var(--hair-light);
}

.page-about .index-tree__node {
  border-bottom: 1px solid var(--hair-light);
}

.page-about .index-tree__head {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  color: var(--clr-white);
  transition: background-color 0.2s var(--ease);
}

.page-about .index-tree__head::-webkit-details-marker {
  display: none;
}

.page-about .index-tree__head::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--clr-gold);
  transition: transform 0.2s var(--ease);
}

.page-about .index-tree__node[open] .index-tree__head::after {
  content: "－";
}

.page-about .index-tree__head:hover,
.page-about .index-tree__head:focus-visible {
  background: rgba(200, 164, 76, 0.12);
}

.page-about .index-tree__label {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.01em;
}

.page-about .index-tree__count {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--clr-lake-soft);
}

.page-about .index-tree__list {
  list-style: none;
  margin: 0;
  padding: 4px 0 18px 0;
}

.page-about .index-tree__list li {
  display: flex;
  gap: 14px;
  padding: 8px 0 8px 40px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: rgba(251, 252, 253, 0.9);
  position: relative;
}

.page-about .index-tree__list li::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 50%;
  width: 1px;
  background: var(--hair-light);
}

.page-about .index-tree__list li::after {
  content: "";
  position: absolute;
  left: 20px;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--hair-light);
}

.page-about .index-tree__list li:last-child::before {
  bottom: 50%;
}

.page-about .index-tree__num {
  color: var(--clr-gold);
  flex-shrink: 0;
}

.page-about .index-tree .idx {
  color: var(--clr-white);
}

.page-about .about-index__figure {
  margin: 0;
}

.page-about .about-index__figure .figure__media {
  background: linear-gradient(200deg, rgba(200, 164, 76, 0.25), rgba(14, 92, 138, 0.35));
}

/* ---------- tag deck ---------- */

.page-about .about-tags .tag-deck {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .tag-card {
  background: rgba(251, 252, 253, 0.08);
  border: 1px solid var(--hair-light);
  padding: 20px 18px 22px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-about .tag-card:hover,
.page-about .tag-card:focus-within {
  transform: translateY(-4px);
  background: rgba(251, 252, 253, 0.14);
}

.page-about .tag-card__swatch {
  display: block;
  width: 100%;
  height: 8px;
  margin-bottom: 16px;
  border-radius: 1px;
}

.page-about .tag-card__swatch--lake { background: var(--clr-lake-soft); }
.page-about .tag-card__swatch--dusk { background: var(--clr-dusk-soft); }
.page-about .tag-card__swatch--gold { background: var(--clr-gold); }
.page-about .tag-card__swatch--ember { background: var(--clr-ember); }

.page-about .tag-card__ver {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clr-gold);
  margin: 0 0 8px;
}

.page-about .tag-card__title {
  margin: 0 0 10px;
  color: var(--clr-white);
}

.page-about .tag-card p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(251, 252, 253, 0.82);
}

.page-about .about-tags__note {
  padding: clamp(22px, 3vw, 32px);
}

.page-about .about-tags__note-key {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--clr-gold);
}

.page-about .about-tags__list {
  margin: 0;
  color: var(--clr-white);
}

.page-about .about-tags__list li {
  margin-bottom: 8px;
}

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

/* ---------- team ---------- */

.page-about .about-team__grid {
  align-items: start;
}

.page-about .about-team__text p {
  margin: 0 0 16px;
  color: var(--text-soft);
  max-width: 36em;
}

.page-about .about-team__text .lede {
  color: var(--clr-ink);
}

.page-about .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .flow-list__item {
  position: relative;
  padding: 0 0 26px 28px;
  border-left: 1px solid var(--about-line);
}

.page-about .flow-list__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .flow-list__item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--clr-gold);
}

.page-about .flow-list__step {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--clr-lake);
  margin-bottom: 6px;
}

.page-about .flow-list__title {
  margin: 0 0 8px;
  color: var(--clr-ink);
}

.page-about .flow-list__item p {
  margin: 0;
  color: var(--text-soft);
  max-width: 32em;
}

/* ---------- reach ---------- */

.page-about .reach-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .reach-grid__cell {
  background: var(--clr-cream);
  padding: clamp(22px, 3vw, 34px);
  display: flex;
  flex-direction: column;
  transition: background-color 0.25s var(--ease);
}

.page-about .reach-grid__cell:hover,
.page-about .reach-grid__cell:focus-within {
  background: var(--clr-white);
}

.page-about .reach-grid__num {
  font-family: var(--font-display);
  font-size: clamp(38px, 4.4vw, 62px);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--clr-lake);
}

.page-about .reach-grid__plus {
  font-size: 0.55em;
  color: var(--clr-gold);
  margin-left: 2px;
}

.page-about .reach-grid__unit {
  display: block;
  margin: 10px 0 14px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--clr-dusk);
}

.page-about .reach-grid__cell p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- next ---------- */

.page-about .about-next__grid {
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .about-next__card {
  padding: clamp(22px, 3vw, 34px);
}

.page-about .about-next__card-key {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clr-dusk);
}

.page-about .about-next__card .h3 {
  margin: 0 0 10px;
  color: var(--clr-ink);
}

.page-about .about-next__card p:last-child {
  margin: 0;
  color: var(--text-soft);
  max-width: 34em;
}

.page-about .about-next__tail {
  margin: 0;
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--about-line);
  max-width: 46em;
  color: var(--text-soft);
}

.page-about .about-next__tail a {
  color: var(--clr-lake);
  text-decoration: none;
  border-bottom: 1px solid var(--clr-gold);
  padding-bottom: 1px;
  transition: color 0.2s var(--ease);
}

.page-about .about-next__tail a:hover,
.page-about .about-next__tail a:focus-visible {
  color: var(--clr-dusk);
}

/* ---------- floating version badge ---------- */

.page-about .about-version-badge {
  position: fixed;
  top: 96px;
  right: 20px;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--clr-cream);
  border: 1px solid var(--clr-lake);
  border-left: 4px solid var(--clr-gold);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--clr-ink);
  box-shadow: 0 6px 18px rgba(36, 31, 26, 0.08);
}

.page-about .about-version-badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--clr-ember);
  flex-shrink: 0;
}

.page-about .about-version-badge__label {
  color: var(--clr-dusk);
}

.page-about .about-version-badge__num {
  color: var(--clr-lake);
  font-weight: 700;
}

.page-about .about-version-badge__pop {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 250px;
  padding: 12px 14px;
  background: var(--clr-lake-deep);
  color: var(--clr-white);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
}

.page-about .about-version-badge:hover .about-version-badge__pop,
.page-about .about-version-badge:focus-within .about-version-badge__pop {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---------- responsive ---------- */

@media (max-width: 1080px) {
  .page-about .about-hero__split {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-about .about-index__wrap {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-about .about-index__figure {
    order: -1;
    max-width: 520px;
  }
  .page-about .about-tags .tag-deck {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .reach-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .page-about {
    --about-rail: 68px;
  }
  .page-about .timeline::before {
    left: calc(var(--about-rail) - 1px);
  }
  .page-about .timeline__item {
    gap: 16px;
  }
  .page-about .timeline__stamp::after {
    right: -5px;
    width: 9px;
    height: 9px;
  }
  .page-about .timeline__year {
    font-size: 19px;
  }
  .page-about .about-tags .tag-deck {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-about .reach-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-about .index-tree__list li {
    padding-left: 30px;
  }
  .page-about .index-tree__list li::before,
  .page-about .index-tree__list li::after {
    left: 14px;
  }
  .page-about .index-tree__list li::after {
    width: 9px;
  }
  .page-about .about-version-badge {
    position: static;
    width: fit-content;
    margin: 24px auto 0;
    justify-content: flex-start;
  }
  .page-about .about-version-badge__pop {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tag-card,
  .page-about .about-version-badge__pop,
  .page-about .timeline__stamp::after {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>