.page-about {
  --about-sticky: 92px;
  background: var(--bg);
  color: var(--ink);
}

.page-about .about-hero {
  padding: clamp(1.5rem, 5vw, 3.5rem) 0 clamp(2rem, 6vw, 4rem);
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}

.page-about .hero-copy .eyebrow {
  margin: 0 0 1rem;
  color: var(--signal);
}

.page-about .hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.1rem, 7vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .hero-lead {
  margin: 1.25rem 0 0;
  max-width: 54ch;
  color: var(--ink);
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  line-height: 1.85;
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .hero-stats li {
  background: var(--bg-deep);
  padding: 0.9rem 1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-about .stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1;
  font-weight: 400;
  color: var(--signal);
}

.page-about .stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .hero-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--bg-deep);
}

.page-about .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.9);
}

.page-about .hero-years {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 2.5rem 1.1rem 0.9rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 9vw, 4.4rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
  background: linear-gradient(to top, rgba(7, 26, 20, 0.94), rgba(7, 26, 20, 0));
}

.page-about .year-from {
  color: var(--ink);
  font-weight: 300;
}

.page-about .year-arrow {
  color: var(--signal);
  font-size: 0.45em;
}

.page-about .year-to {
  color: var(--amber);
  font-weight: 400;
}

.page-about .chronicle {
  display: grid;
  gap: 2rem;
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-about .toc {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.page-about .toc-title {
  margin: 0 0 0.9rem;
  color: var(--mist);
}

.page-about .toc-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.35rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .toc-list a {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .toc-list a:hover,
.page-about .toc-list a:focus-visible {
  color: var(--signal);
  border-color: var(--signal-dim);
  outline: none;
}

.page-about .toc-year {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--signal-dim);
  min-width: 2.6em;
}

.page-about .chronicle-main {
  min-width: 0;
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.page-about .chapter {
  border-top: 1px solid var(--line);
  padding-top: clamp(1.5rem, 4vw, 2.25rem);
  scroll-margin-top: calc(var(--about-sticky) + 1rem);
}

.page-about .chapter-index {
  margin: 0 0 0.7rem;
  color: var(--signal-dim);
}

.page-about .chapter-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.55rem, 4.4vw, 2.5rem);
  line-height: 1.16;
  color: var(--ink);
  max-width: 26ch;
}

.page-about .chapter-lead {
  margin: 0.9rem 0 0;
  max-width: 52ch;
  color: var(--mist);
  font-size: 0.95rem;
  line-height: 1.85;
}

.page-about .chapter-body {
  margin-top: 1.25rem;
  display: grid;
  gap: 1rem;
}

.page-about .chapter-body p {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink);
}

.page-about .milestone-figure,
.page-about .partner-figure {
  margin: 1.5rem 0 0;
  border: 1px solid var(--line);
  background: var(--bg-deep);
  overflow: hidden;
}

.page-about .milestone-figure img,
.page-about .partner-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.8) brightness(0.92);
}

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

.page-about .partner-figure img {
  aspect-ratio: 12 / 7;
}

.page-about .timeline {
  position: relative;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0.9em;
  bottom: 1.5rem;
  width: 1px;
  background: linear-gradient(to bottom, var(--signal-dim), var(--line) 70%);
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 1.9rem 2rem;
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 0.5em;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--signal-dim);
}

.page-about .tl-item--key::before {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(255, 176, 32, 0.16);
}

.page-about .tl-year {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.7rem, 5vw, 2.35rem);
  line-height: 1;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-about .tl-item--key .tl-year {
  color: var(--signal);
}

.page-about .tl-title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin: 0;
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink);
}

.page-about .tl-desc {
  margin: 0.55rem 0 0;
  max-width: 58ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .tl-details {
  margin-top: 0.7rem;
  border-top: 1px solid var(--line);
  max-width: 60ch;
}

.page-about .tl-details summary {
  cursor: pointer;
  padding: 0.6rem 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--signal);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.page-about .tl-details summary::before {
  content: "+";
  font-size: 14px;
  line-height: 1;
  color: var(--signal);
}

.page-about .tl-details[open] summary::before {
  content: "−";
}

.page-about .tl-details summary:focus-visible {
  outline: 2px solid var(--signal-dim);
  outline-offset: 3px;
}

.page-about .tl-details p {
  margin: 0 0 1rem;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .role-grid {
  display: grid;
  gap: 1px;
  margin: 0.35rem 0 0.85rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .role {
  background: var(--panel);
  padding: 1.15rem 1.1rem 1.25rem;
}

.page-about .role-name {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--signal);
}

.page-about .role p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .cap-list {
  display: grid;
  gap: 1.1rem;
  margin: 0.35rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .cap {
  padding-left: 1rem;
  border-left: 2px solid var(--signal-dim);
}

.page-about .cap:nth-child(2n) {
  border-left-color: var(--line);
}

.page-about .cap-name {
  margin: 0 0 0.4rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--ink);
}

.page-about .cap p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .chapter--promise {
  background: var(--bg-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: clamp(1.5rem, 4vw, 2.25rem) clamp(1rem, 3vw, 1.75rem) clamp(1.75rem, 4vw, 2.5rem);
  margin-inline: calc(-1 * clamp(0rem, 2vw, 0rem));
}

.page-about .promise-links {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.page-about .promise-links .arrow-link {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s ease;
}

.page-about .promise-links .arrow-link::after {
  content: "→";
  color: var(--signal);
  font-family: var(--font-mono);
}

.page-about .promise-links .arrow-link:hover,
.page-about .promise-links .arrow-link:focus-visible {
  color: var(--signal);
  outline: none;
}

@media (min-width: 640px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .cap-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.35rem 1.75rem;
  }

  .page-about .promise-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0 1.75rem;
  }

  .page-about .promise-links .arrow-link {
    border-bottom: none;
    gap: 0.45rem;
  }
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

@media (min-width: 1000px) {
  .page-about .chronicle {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-about .toc {
    position: sticky;
    top: var(--about-sticky);
    border-top: none;
    padding-top: 0;
  }

  .page-about .toc-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .page-about .toc-list a {
    padding: 0.6rem 0;
  }

  .page-about .toc-list a:hover,
  .page-about .toc-list a:focus-visible {
    padding-left: 0.35rem;
  }
}