.page-about {
  background: var(--ts-cream);
  color: var(--ts-graphite);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  overflow-x: hidden;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ts-blue);
  color: var(--ts-cream);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 36px), 0 100%);
  padding-bottom: 28px;
}

.page-about .about-hero-wedge {
  position: absolute;
  top: -40%;
  right: -34%;
  width: 72%;
  height: 180%;
  background: var(--ts-blue-deep);
  transform: rotate(-6deg);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 28px;
  padding-bottom: 44px;
}

.page-about .about-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.12em;
  color: var(--ts-mist);
}

.page-about .about-hero .breadcrumb a {
  color: var(--ts-yellow);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 160ms var(--ease);
}

.page-about .about-hero .breadcrumb a:hover {
  border-bottom-color: var(--ts-yellow);
}

.page-about .about-hero .eyebrow {
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: 0.18em;
  color: var(--ts-yellow);
  padding-left: 12px;
  border-left: 3px solid var(--ts-yellow);
  line-height: 1.2;
}

.page-about .about-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 8.4vw, 68px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ts-white);
}

.page-about .about-hero-lead {
  margin: 22px 0 0;
  max-width: 600px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ts-mist);
}

.page-about .about-hero-lead strong {
  font-family: var(--font-mono);
  color: var(--ts-yellow);
  font-weight: 600;
}

.page-about .about-hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 32px 0 0;
  border-top: 1px solid rgba(201, 210, 221, 0.28);
  border-bottom: 1px solid rgba(201, 210, 221, 0.28);
}

.page-about .about-hero-facts > div {
  padding: 16px 10px 16px 0;
  min-width: 0;
}

.page-about .about-hero-facts > div + div {
  padding-left: 12px;
  border-left: 1px solid rgba(201, 210, 221, 0.28);
}

.page-about .about-hero-facts dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ts-mist);
  line-height: 1.5;
}

.page-about .about-hero-facts dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--ts-yellow);
}

.page-about .about-hero-facts dd.about-fact-text {
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0;
  color: var(--ts-white);
  word-break: break-all;
}

.page-about .about-layout {
  padding-top: 44px;
  padding-bottom: 72px;
}

.page-about .about-toc {
  margin-bottom: 36px;
}

.page-about .about-toc-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ts-clay);
}

.page-about .about-toc-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-about .about-toc-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--ts-mist);
  background: var(--ts-white);
  color: var(--ts-graphite);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-about .about-toc-link:hover {
  border-color: var(--ts-yellow);
  color: var(--ts-ink);
}

.page-about .about-toc-link.is-active {
  border-color: var(--ts-blue);
  color: var(--ts-blue);
  background: var(--ts-cream);
}

.page-about .about-toc-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ts-clay);
}

.page-about .about-chapter {
  border-top: 1px solid var(--ts-mist);
  padding-top: 22px;
  margin-top: 46px;
}

.page-about .about-flow > .about-chapter:first-child {
  margin-top: 0;
}

.page-about .about-chapter-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ts-clay);
}

.page-about .about-chapter h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 5.4vw, 44px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ts-ink);
}

.page-about .about-prose p {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--ts-graphite);
}

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

.page-about .about-intro {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ts-graphite);
}

.page-about .about-origin-grid {
  display: grid;
  gap: 24px;
}

.page-about figure {
  margin: 0;
  min-width: 0;
}

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

.page-about .about-figure img {
  aspect-ratio: 3 / 2;
  border-bottom: 3px solid var(--ts-yellow);
}

.page-about .media-caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--ts-graphite);
  opacity: 0.78;
}

.page-about .about-timeline {
  list-style: none;
  margin: 6px 0 0;
  padding: 0 0 0 30px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 24px;
  bottom: 24px;
  width: 1px;
  background: var(--ts-mist);
}

.page-about .about-stage {
  position: relative;
  padding: 14px 0 16px;
  border-bottom: 1px solid var(--ts-mist);
}

.page-about .about-stage:last-child {
  border-bottom: 0;
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 24px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ts-blue);
  box-shadow: 0 0 0 4px var(--ts-cream);
  transition: background-color 160ms var(--ease);
}

.page-about .about-stage:hover::before,
.page-about .about-stage:focus::before,
.page-about .about-stage:focus-within::before {
  background: var(--ts-yellow);
}

.page-about .about-stage-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ts-clay);
}

.page-about .about-stage h3 {
  margin: 4px 0 0;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ts-ink);
}

.page-about .about-stage-lead {
  margin: 5px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ts-graphite);
}

.page-about .about-stage-note {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 240ms var(--ease);
}

.page-about .about-stage-note > p {
  overflow: hidden;
  margin: 0;
  padding-top: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ts-blue);
  border-left: 2px solid var(--ts-yellow);
  padding-left: 12px;
  margin-left: 0;
  box-sizing: border-box;
}

.page-about .about-stage:hover .about-stage-note,
.page-about .about-stage:focus .about-stage-note,
.page-about .about-stage:focus-within .about-stage-note {
  grid-template-rows: 1fr;
}

.page-about .about-locations {
  display: grid;
  margin-top: 4px;
}

.page-about .about-location {
  padding: 18px 14px 20px;
  border-top: 2px solid var(--ts-blue);
  transition: background-color 180ms var(--ease);
}

.page-about .about-location:nth-child(2) {
  border-top-color: var(--ts-yellow);
}

.page-about .about-location:nth-child(3) {
  border-top-color: var(--ts-red);
}

.page-about .about-location:hover {
  background-color: rgba(10, 42, 94, 0.055);
}

.page-about .about-location-city {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 28px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ts-ink);
}

.page-about .about-location-role {
  margin: 8px 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ts-blue);
}

.page-about .about-location p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ts-graphite);
}

.page-about .about-flow-grid {
  display: grid;
  gap: 26px;
  margin-top: 4px;
}

.page-about .about-steps {
  border-top: 1px solid var(--ts-mist);
  min-width: 0;
}

.page-about .about-step {
  border-bottom: 1px solid var(--ts-mist);
}

.page-about .about-step summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 700;
  color: var(--ts-ink);
  transition: color 160ms var(--ease);
}

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

.page-about .about-step summary:hover {
  color: var(--ts-blue);
}

.page-about .about-step summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 20px;
  line-height: 1;
  color: var(--ts-blue);
}

.page-about .about-step[open] summary::after {
  content: "−";
  color: var(--ts-red);
}

.page-about .about-step-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ts-clay);
  font-weight: 400;
}

.page-about .about-step-body {
  padding: 0 0 20px;
}

.page-about .about-step-body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ts-graphite);
}

.page-about .about-step-body ul {
  margin: 0;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ts-graphite);
}

.page-about .about-step-body li {
  margin-bottom: 4px;
}

.page-about .about-step-body li::marker {
  color: var(--ts-yellow);
}

.page-about .about-partners {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  border-top: 1px solid var(--ts-mist);
}

.page-about .about-partner {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 2px 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--ts-mist);
}

.page-about .about-partner-num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--ts-blue);
  padding-top: 3px;
}

.page-about .about-partner-label {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ts-ink);
}

.page-about .about-partner-note {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ts-graphite);
}

.page-about .about-partners-note {
  margin-top: 22px;
  padding-left: 14px;
  border-left: 3px solid var(--ts-yellow);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-plate {
  margin: 4px 0 26px;
}

.page-about .about-plate img {
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .about-next {
  margin-top: 56px;
  border-top: 1px solid var(--ts-mist);
  padding-top: 26px;
}

.page-about .about-next h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--fs-4);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ts-ink);
}

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

.page-about .about-next-list li {
  border-bottom: 1px solid var(--ts-mist);
}

.page-about .about-next-list a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 2px 16px;
  padding: 14px 0;
  text-decoration: none;
  font-size: 17px;
  font-weight: 700;
  color: var(--ts-ink);
  transition: color 160ms var(--ease);
}

.page-about .about-next-list span {
  grid-column: 1;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--ts-graphite);
}

.page-about .about-next-list a::after {
  content: "→";
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-mono);
  color: var(--ts-blue);
  transition: transform 160ms var(--ease);
}

.page-about .about-next-list a:hover {
  color: var(--ts-blue);
}

.page-about .about-next-list a:hover::after {
  transform: translateX(4px);
}

@media (min-width: 700px) {
  .page-about .about-hero-inner {
    padding-top: 40px;
    padding-bottom: 60px;
    max-width: 760px;
  }

  .page-about .about-hero-facts > div {
    padding: 18px 16px 18px 0;
  }

  .page-about .about-hero-facts > div + div {
    padding-left: 20px;
  }

  .page-about .about-hero-facts dd {
    font-size: 32px;
  }

  .page-about .about-hero-facts dd.about-fact-text {
    font-size: 15px;
    word-break: normal;
  }

  .page-about .about-partner {
    grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: baseline;
    gap: 0 20px;
  }

  .page-about .about-partner-num {
    grid-row: auto;
    font-size: 30px;
  }

  .page-about .about-partner-note {
    grid-column: 3;
  }
}

@media (min-width: 820px) {
  .page-about .about-origin-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.88fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-locations {
    grid-template-columns: 4fr 3fr 3fr;
  }

  .page-about .about-location {
    padding: 20px 20px 24px;
  }

  .page-about .about-location + .about-location {
    border-left: 1px solid var(--ts-mist);
  }

  .page-about .about-flow-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 36px;
    align-items: start;
    margin-top: 6px;
  }

  .page-about .about-plate img {
    aspect-ratio: 2 / 1;
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: minmax(0, 30fr) minmax(0, 70fr);
    column-gap: 64px;
    padding-top: 76px;
    padding-bottom: 96px;
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    margin-bottom: 0;
    align-self: start;
  }

  .page-about .about-toc-nav {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-toc-link {
    display: block;
    position: relative;
    width: 100%;
    padding: 11px 0 11px 14px;
    margin-bottom: 0;
    border: 0;
    border-bottom: 1px solid var(--ts-mist);
    background: transparent;
    font-size: 15px;
    white-space: normal;
    box-sizing: border-box;
  }

  .page-about .about-toc-link.is-active {
    background: transparent;
    color: var(--ts-ink);
  }

  .page-about .about-toc-link.is-active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--ts-yellow);
  }

  .page-about .about-toc-num {
    margin-right: 8px;
  }

  .page-about .about-chapter {
    margin-top: 64px;
    padding-top: 26px;
  }

  .page-about .about-chapter h2 {
    margin-bottom: 20px;
  }
}

@media (hover: none) {
  .page-about .about-stage-note {
    grid-template-rows: 1fr;
    transition: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stage-note,
  .page-about .about-stage::before,
  .page-about .about-toc-link,
  .page-about .about-next-list a,
  .page-about .about-next-list a::after {
    transition: none;
  }
}