.page-about {
  --about-toc-width: 250px;
  --about-grid-size: 44px;
  position: relative;
  background-color: var(--deep-space-gray);
  background-image:
    linear-gradient(rgba(30, 144, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 144, 255, 0.05) 1px, transparent 1px);
  background-size: var(--about-grid-size) var(--about-grid-size);
  scroll-behavior: smooth;
}

.page-about::after {
  content: "";
  position: fixed;
  left: 0;
  bottom: 0;
  width: 180px;
  height: 180px;
  background: var(--jewel-burgundy);
  opacity: 0.38;
  z-index: 0;
  pointer-events: none;
  clip-path: polygon(0 100%, 52% 100%, 0 48%);
}

.page-about .about-breadcrumb {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 0;
}

.page-about .about-breadcrumb a {
  color: var(--tech-blue);
}

.page-about .about-breadcrumb a:hover {
  color: var(--vibrant-orange);
}

.page-about .about-hero {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 2rem;
}

.page-about .about-hero__kicker {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  color: var(--neon-green);
  text-transform: uppercase;
  margin-bottom: 0.875rem;
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.25rem, 5vw, 4rem);
  line-height: 1.12;
  color: var(--text-primary);
  max-width: 16em;
  margin-bottom: 1.25rem;
  overflow-wrap: break-word;
}

.page-about .about-hero__lead {
  color: var(--text-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 44em;
  margin-bottom: 2rem;
}

.page-about .about-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}

.page-about .about-board {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.25rem 4rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

.page-about .about-toc {
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

.page-about .about-toc__title {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-toc__link {
  display: inline-flex;
  gap: 0.45rem;
  align-items: baseline;
  font-size: 0.9rem;
  color: var(--text-primary);
  text-decoration: none;
  white-space: nowrap;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border-color);
  border-radius: 2px;
  transition: border-color 0.2s, background-color 0.2s, color 0.2s, transform 0.2s;
}

.page-about .about-toc__link span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--tech-blue);
}

.page-about .about-toc__link:hover {
  color: var(--vibrant-orange);
  border-color: rgba(255, 165, 0, 0.5);
  background-color: rgba(255, 165, 0, 0.06);
  transform: translateY(-1px);
}

.page-about .about-content {
  min-width: 0;
  display: grid;
  gap: 3rem;
}

.page-about .about-section {
  scroll-margin-top: 5rem;
  min-width: 0;
}

.page-about .about-section__index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--neon-green);
  margin-bottom: 0.6rem;
}

.page-about .about-section__title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 3vw, 2.6rem);
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.page-about .about-section__intro {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 42em;
  margin-bottom: 1.75rem;
}

.page-about .about-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

.page-about .about-section__lead p,
.page-about .about-section__supplement p {
  color: var(--text-primary);
  line-height: 1.75;
}

.page-about .about-section__quote {
  border-left: 3px solid var(--vibrant-orange);
  padding-left: 1rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

@media (min-width: 640px) {
  .page-about .about-section__grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.page-about .about-timeline__bg {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 0.5rem 0 2.5rem;
}

.page-about .timeline-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  position: relative;
}

.page-about .timeline-node {
  position: relative;
  padding: 1rem 1rem 1rem 2.25rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: rgba(22, 33, 62, 0.75);
  transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  left: 0.75rem;
  top: 1.5rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tech-blue);
  box-shadow: 0 0 0 3px rgba(30, 144, 255, 0.22);
}

.page-about .timeline-node__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.page-about .timeline-node__code {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--neon-green);
  letter-spacing: 0.04em;
}

.page-about .timeline-node__year {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-about .timeline-node h3 {
  font-family: var(--font-head);
  font-size: 1.12rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.page-about .timeline-node p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.page-about .timeline-node:hover {
  transform: translateY(-3px);
  border-color: var(--tech-blue);
  background-color: rgba(22, 33, 62, 0.95);
}

.page-about .about-section--meet {
  background: linear-gradient(120deg, rgba(15, 76, 92, 0.4), rgba(22, 33, 62, 0.35) 60%);
  border: 1px solid rgba(15, 76, 92, 0.6);
  border-radius: 8px;
  padding: 1.75rem 1.25rem;
}

.page-about .meet-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  margin-top: 0.5rem;
}

.page-about .meet-content p {
  color: var(--text-primary);
  line-height: 1.75;
}

.page-about .meet-content ul {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .meet-content li {
  padding-left: 1.6rem;
  position: relative;
  color: var(--text-primary);
  line-height: 1.6;
}

.page-about .meet-content li::before {
  content: "▸";
  color: var(--vibrant-orange);
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
}

.page-about .meet-visual img {
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.page-about .meet-note {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  line-height: 1.7;
}

.page-about .about-section--data {
  background: var(--midnight-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.75rem 1.25rem;
}

.page-about .data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.5rem 0 0;
}

.page-about .data-item {
  padding: 1.1rem 0.9rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--vibrant-orange);
  border-radius: 4px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-about .data-item:hover {
  background: rgba(255, 165, 0, 0.06);
  border-color: rgba(255, 165, 0, 0.3);
}

.page-about .data-item dt {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.page-about .data-item__value {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--neon-green);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.page-about .data-item__value sup {
  font-size: 0.5em;
  color: var(--vibrant-orange);
}

.page-about .data-item__note {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.page-about .about-section--team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

.page-about .team-content p {
  color: var(--text-primary);
  line-height: 1.75;
}

.page-about .team-visual img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  object-fit: cover;
}

.page-about .about-section--credentials {
  background: rgba(74, 20, 140, 0.2);
  border: 1px solid rgba(74, 20, 140, 0.55);
  border-radius: 8px;
  padding: 1.75rem 1.25rem;
}

.page-about .credentials-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.page-about .credential-item {
  padding: 1.4rem 1.2rem;
  background: rgba(26, 26, 46, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.page-about .credential-item:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
}

.page-about .credential-item__number {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--vibrant-orange);
  margin-bottom: 0.7rem;
  line-height: 1;
}

.page-about .credential-item h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.page-about .credential-item p {
  color: var(--text-muted);
  line-height: 1.7;
  font-size: 0.9rem;
  margin: 0;
}

.page-about .credentials-line {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-color);
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-about .about-outro {
  margin-top: 1rem;
  padding: 1.75rem 1.25rem;
  border: 1px solid var(--border-color);
  background: rgba(30, 144, 255, 0.07);
  border-radius: 8px;
}

.page-about .about-outro p {
  color: var(--text-primary);
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

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

.page-about .about-outro a {
  color: var(--tech-blue);
}

.page-about .about-outro a:hover {
  color: var(--vibrant-orange);
}

@media (min-width: 720px) {
  .page-about .data-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-board {
    grid-template-columns: var(--about-toc-width) minmax(0, 1fr);
    gap: 3.5rem;
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: 2rem;
    border-top: none;
    padding-top: 0.25rem;
  }

  .page-about .about-toc__list {
    flex-direction: column;
    gap: 0;
    flex-wrap: nowrap;
  }

  .page-about .about-toc__link {
    width: 100%;
    padding: 0.6rem 0;
    border: none;
    border-left: 2px solid var(--border-color);
    border-radius: 0;
    padding-left: 1rem;
    background: transparent;
  }

  .page-about .about-toc__link:hover {
    border-left-color: var(--vibrant-orange);
    background: transparent;
  }

  .page-about .timeline-track {
    display: flex;
    gap: 1rem;
    padding-top: 2rem;
  }

  .page-about .timeline-track::before {
    content: "";
    position: absolute;
    top: 0.85rem;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--tech-blue) 0 14px, transparent 14px 22px);
    opacity: 0.85;
  }

  .page-about .timeline-node {
    flex: 1;
    padding: 1.75rem 1.1rem 1rem;
  }

  .page-about .timeline-node::before {
    top: 0.12rem;
    left: 1.1rem;
  }

  .page-about .meet-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-about .about-section--team {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-about .credentials-layout {
    grid-template-columns: repeat(3, 1fr);
  }
}