.page-about {
  background: var(--paper);
  color: var(--ink-green);
}

.page-about .about-head {
  position: relative;
  overflow: hidden;
  background: var(--ink-green);
  color: var(--paper);
  padding: 22px 0 44px;
}

.page-about .about-head::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(201, 194, 176, .09) 0 1px,
    transparent 1px 58px
  );
  mask-image: linear-gradient(100deg, transparent 42%, #000 100%);
  -webkit-mask-image: linear-gradient(100deg, transparent 42%, #000 100%);
}

.page-about .about-head > .container {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumbs {
  margin-bottom: 26px;
}

.page-about .about-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 7.4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin: 10px 0 18px;
  max-width: 20ch;
}

.page-about .about-lede {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(246, 241, 228, .82);
  max-width: 60ch;
  margin: 0;
}

.page-about .about-facts {
  list-style: none;
  margin: 32px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line-dark);
  display: grid;
  gap: 18px;
}

.page-about .about-fact {
  display: grid;
  gap: 4px;
}

.page-about .about-fact-num {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: .01em;
  line-height: 1;
}

.page-about .about-fact-label {
  font-size: .82rem;
  line-height: 1.6;
  color: var(--mist);
  max-width: 34ch;
}

.page-about .about-body {
  padding: 36px 0 0;
}

.page-about .about-rail {
  margin-bottom: 26px;
}

.page-about .about-rail-title {
  font-size: .7rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
  margin: 0 0 10px;
}

.page-about .toc-list {
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .toc-item {
  flex: 0 0 auto;
}

.page-about .toc-link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--paper-bright);
  font-size: .82rem;
  color: var(--ink-green);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-about .about-rail-num {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--mist);
}

.page-about .toc-link:hover,
.page-about .toc-link:focus-visible {
  border-color: var(--orange);
  background: var(--highlight);
}

.page-about .toc-link[aria-current="true"] {
  border-color: var(--orange);
  background: var(--highlight);
}

.page-about .toc-link[aria-current="true"] .about-rail-num {
  color: var(--orange-text);
}

.page-about .about-section {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: 24px;
}

.page-about .about-h2 {
  font-family: var(--font-section);
  font-weight: 700;
  font-size: clamp(1.4rem, 4.6vw, 2.05rem);
  line-height: 1.32;
  letter-spacing: .01em;
  margin: 6px 0 18px;
}

.page-about .about-h2--on-dark {
  color: var(--paper);
  margin-top: 0;
}

.page-about .about-h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.55;
  margin: 0 0 8px;
}

.page-about .about-p {
  font-size: 1rem;
  line-height: 1.85;
  margin: 0 0 16px;
  color: #163a33;
}

.page-about .about-p--tight {
  font-size: .93rem;
  line-height: 1.78;
  margin-bottom: 0;
}

.page-about .about-strip {
  margin-top: 24px;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-strip-item {
  background: var(--paper-bright);
  padding: 16px 18px;
  display: grid;
  gap: 6px;
}

.page-about .about-strip-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--orange-text);
  line-height: 1;
}

.page-about .about-strip-text {
  font-size: .84rem;
  line-height: 1.65;
  color: #3c5b53;
}

.page-about .tl-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 26px;
}

.page-about .tl-jump-link {
  font-family: var(--font-mono);
  font-size: .84rem;
  letter-spacing: .04em;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ink-green);
  text-decoration: none;
  transition: border-color 200ms var(--ease), color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-about .tl-jump-link:hover,
.page-about .tl-jump-link:focus-visible {
  border-color: var(--orange);
  background: var(--orange);
  color: var(--paper-bright);
}

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

.page-about .tl::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 26px;
  left: 5px;
  width: 1px;
  background: var(--line);
}

.page-about .tl-node {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 0 0 24px 24px;
  scroll-margin-top: 96px;
}

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 11px;
  height: 2px;
  background: var(--orange);
}

.page-about .tl-node:target .tl-body {
  border-color: var(--orange);
  background: var(--paper-bright);
  box-shadow: var(--shadow-soft);
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: 1.28rem;
  font-weight: 600;
  color: var(--orange-text);
  line-height: 1;
  letter-spacing: .02em;
}

.page-about .tl-body {
  border: 1px solid var(--line);
  background: rgba(252, 250, 243, .7);
  padding: 16px 18px;
  transition: border-color 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-about .tl-title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .98rem;
  line-height: 1.5;
  margin: 0 0 6px;
}

.page-about .tl-text {
  margin: 0;
  font-size: .9rem;
  line-height: 1.78;
  color: #3c5b53;
}

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

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-about .about-figure--wide img {
  aspect-ratio: 5 / 3;
}

.page-about .about-figure--side img {
  aspect-ratio: 3 / 2;
}

.page-about .about-figure--full img {
  aspect-ratio: 16 / 7;
  border-left: 0;
  border-right: 0;
}

.page-about .about-figure .figure-caption {
  margin-top: 10px;
  font-size: .78rem;
  line-height: 1.6;
  color: var(--mist);
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

.page-about .about-split {
  display: grid;
  gap: 8px;
}

.page-about .about-roles {
  margin: 24px 0 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-role {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  background: var(--paper-bright);
  padding: 12px 16px;
}

.page-about .about-role dt {
  font-size: .88rem;
  color: #3c5b53;
}

.page-about .about-role dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-green);
}

.page-about .about-pair {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-pair-card {
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--paper-bright);
  padding: 18px 18px 20px;
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-about .about-pair-card:last-child {
  border-left-color: var(--blue);
}

.page-about .about-pair-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.page-about .about-pair-card .tag {
  display: inline-block;
  margin-bottom: 10px;
}

.page-about .about-link-row {
  margin: 24px 0 0;
}

.page-about .about-method {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-method-item {
  border: 1px solid var(--line);
  background: var(--paper-bright);
  padding: 18px 18px 20px;
  display: grid;
  gap: 6px;
}

.page-about .about-method-num {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .12em;
  color: var(--orange-text);
}

.page-about .about-inline-link {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-inline-link:hover {
  color: var(--blue-deep);
}

.page-about .about-close {
  margin: 34px 0 0;
  background: var(--ink-deep);
  color: var(--paper);
}

.page-about .about-close-inner {
  padding: 28px 22px 34px;
}

.page-about .about-p--on-dark {
  color: rgba(246, 241, 228, .78);
  font-size: .95rem;
  max-width: 62ch;
}

.page-about .about-close-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
}

@media (min-width: 640px) {
  .page-about .about-head {
    padding: 26px 0 54px;
  }

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

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

  .page-about .tl-node {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 0 18px;
    padding-left: 30px;
  }

  .page-about .tl-year {
    font-size: 1.5rem;
    padding-top: 12px;
  }

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

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

  .page-about .about-close-inner {
    padding: 32px 30px 40px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body {
    display: grid;
    grid-template-columns: 172px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 52px;
  }

  .page-about .about-rail {
    position: sticky;
    top: 96px;
    margin-bottom: 0;
  }

  .page-about .toc-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-about .toc-item {
    margin: 0;
  }

  .page-about .toc-link {
    display: flex;
    align-items: baseline;
    gap: 9px;
    width: 100%;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: none;
    margin-left: -1px;
    padding: 10px 0 10px 14px;
    font-size: .86rem;
    color: #3c5b53;
    white-space: normal;
    transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
  }

  .page-about .toc-link:hover,
  .page-about .toc-link:focus-visible {
    background: var(--highlight);
    border-left-color: var(--line);
  }

  .page-about .toc-link[aria-current="true"] {
    background: var(--highlight);
    border-left-color: var(--orange);
    color: var(--ink-green);
    font-weight: 600;
  }

  .page-about .about-rail-title {
    padding-left: 14px;
  }

  .page-about .about-section {
    padding: 46px 0;
  }

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

  .page-about .about-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 34px;
    align-items: start;
  }

  .page-about .about-figure--side {
    margin-top: 4px;
  }

  .page-about .about-strip {
    margin-top: 30px;
  }

  .page-about .tl {
    padding-right: 12%;
  }

  .page-about .about-close {
    margin-top: 46px;
  }

  .page-about .about-close-inner {
    max-width: 860px;
  }
}
</