.page-about {
  --about-rail-w: 214px;
  --about-gap: 28px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  overflow-x: hidden;
}

.page-about .about-hero {
  background: var(--deep);
  color: var(--paper);
  padding: 24px 0 56px;
  border-bottom: 3px solid var(--edge);
}

.page-about .about-hero .breadcrumbs {
  color: var(--line);
}

.page-about .about-hero .breadcrumbs__link {
  color: var(--moss);
  text-decoration: none;
}

.page-about .about-hero .breadcrumbs__link:hover {
  text-decoration: underline;
}

.page-about .eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0;
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap);
  margin-top: 26px;
}

.page-about .about-hero h1 {
  margin: 16px 0 20px;
  font-size: clamp(2.2rem, 7.4vw, 4.8rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
  font-weight: 900;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 48ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--moss);
}

.page-about .about-facts {
  background: var(--paper);
  color: var(--ink);
  border: 3px solid var(--edge);
  box-shadow: 6px 6px 0 var(--signal);
  padding: 18px;
}

.page-about .about-facts__title {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-facts__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 12px;
  margin: 0;
}

.page-about .about-facts__list > div {
  border-top: 2px solid var(--line);
  padding-top: 8px;
}

.page-about .about-facts dt {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-about .about-facts dd {
  margin: 3px 0 0;
  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1.1;
}

.page-about .about-facts dd small {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted);
}

.page-about .about-facts .tag-row {
  margin-top: 16px;
}

.page-about .about-layout {
  display: grid;
  gap: var(--about-gap);
  padding: 36px 0 72px;
}

.page-about .about-toc {
  border: 2px solid var(--line);
  background: var(--moss);
  padding: 14px 12px;
}

.page-about .about-toc .toc__title {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.page-about .about-toc .toc__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 8px;
  font-size: 0.9rem;
  color: var(--ink);
  text-decoration: none;
  border-left: 3px solid transparent;
}

.page-about .about-toc .toc__link:hover {
  background: var(--paper);
}

.page-about .about-toc .toc__link[aria-current="true"] {
  border-left-color: var(--signal);
  background: var(--paper);
  font-weight: 700;
}

.page-about .about-toc__year {
  font-size: 0.72rem;
  color: var(--muted);
  min-width: 18px;
}

.page-about .about-sec {
  padding: 36px 0;
  border-top: 2px solid var(--line);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
}

.page-about .about-sec__idx {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-about .about-sec h2 {
  margin: 0;
  font-size: clamp(1.45rem, 4.4vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  font-weight: 900;
}

.page-about .about-sec p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .about-sec p + p {
  margin-top: 14px;
}

.page-about .about-quote {
  margin: 24px 0 0;
  padding: 16px 18px;
  border-left: 6px solid var(--signal);
  background: var(--moss);
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.7;
}

.page-about .about-quote__idx {
  display: block;
  margin-bottom: 6px;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--signal);
  font-weight: 500;
}

.page-about .figure {
  margin: 0 0 22px;
}

.page-about .figure__media {
  overflow: hidden;
  background: var(--moss);
}

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

.page-about .figure__caption {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--muted);
}

.page-about .about-track {
  list-style: none;
  margin: 0 0 6px;
  padding: 0 0 14px;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  border-bottom: 2px solid var(--line);
}

.page-about .about-track__item {
  position: relative;
  flex: 1 0 112px;
}

.page-about .about-track__item::before {
  content: "";
  position: absolute;
  left: 10px;
  right: 0;
  top: 7px;
  height: 2px;
  background: var(--line);
}

.page-about .about-track__node {
  display: block;
  padding-right: 6px;
  color: var(--ink);
  text-decoration: none;
}

.page-about .about-track__dot {
  display: block;
  width: 13px;
  height: 13px;
  margin-bottom: 12px;
  border: 3px solid var(--green);
  border-radius: 50%;
  background: var(--paper);
}

.page-about .about-track__item:last-child .about-track__dot {
  background: var(--signal);
  border-color: var(--signal);
}

.page-about .about-track__year {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
}

.page-about .about-track__label {
  display: block;
  margin-top: 2px;
  font-size: 0.86rem;
  font-weight: 700;
  line-height: 1.35;
}

.page-about .about-track__node:hover .about-track__dot {
  background: var(--moss);
}

.page-about .about-track__node:hover .about-track__label {
  text-decoration: underline;
}

.page-about .about-phase {
  display: grid;
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .about-phase__year {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--green);
}

.page-about .about-phase h3 {
  margin: 0 0 6px;
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.4;
}

.page-about .about-phase p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-steps {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  counter-reset: about-step;
  display: grid;
  gap: 16px;
}

.page-about .about-steps li {
  position: relative;
  padding-left: 46px;
  font-size: 0.96rem;
  line-height: 1.8;
}

.page-about .about-steps li::before {
  counter-increment: about-step;
  content: counter(about-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  width: 32px;
  height: 26px;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--stable);
  border: 2px solid var(--edge);
}

.page-about .callout {
  margin-top: 24px;
}

.page-about .callout p {
  font-size: 0.94rem;
  line-height: 1.8;
}

.page-about .table-wrap {
  margin-top: 20px;
  overflow-x: auto;
}

.page-about .data-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.page-about .data-table caption {
  text-align: left;
  padding-bottom: 8px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .data-table th,
.page-about .data-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 2px solid var(--line);
  vertical-align: top;
  line-height: 1.7;
}

.page-about .data-table th {
  background: var(--green);
  color: var(--paper);
  font-weight: 700;
  white-space: nowrap;
}

.page-about .data-table tbody tr:nth-child(even) {
  background: var(--moss);
}

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

.page-about .about-next__item {
  border-top: 4px solid var(--green);
  padding-top: 12px;
}

.page-about .about-next__item--accent {
  border-top-color: var(--signal);
}

.page-about .about-next__item h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 800;
}

.page-about .about-next__item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-contact {
  margin-top: 28px;
  padding: 20px;
  display: grid;
  gap: 16px;
  background: var(--deep);
  color: var(--paper);
  border: 3px solid var(--edge);
}

.page-about .about-contact__title {
  margin: 0 0 8px;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--paper);
}

.page-about .about-contact__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--moss);
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-contact .copy-btn {
  font-family: var(--mono);
  font-size: 0.78rem;
  padding: 10px 16px;
  background: transparent;
  color: var(--paper);
  border: 2px solid var(--line);
  cursor: pointer;
}

.page-about .about-contact .copy-btn:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.page-about .about-links {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

@media (min-width: 640px) {
  .page-about .about-hero {
    padding: 28px 0 64px;
  }

  .page-about .about-phase {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 20px;
    padding: 20px 0;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: end;
  }

  .page-about .about-contact {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 24px 26px;
  }

  .page-about .about-contact__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 52px;
    padding: 56px 0 96px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    align-self: start;
  }

  .page-about .about-sec {
    padding: 44px 0;
  }

  .page-about .about-sec p,
  .page-about .about-steps li {
    max-width: 68ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-track {
    scroll-behavior: auto;
  }

  .page-about * {
    transition: none !important;
  }
}