.page-about {
  --about-hero-title-size: clamp(2rem, 4.6vw, 3.5rem);
  --about-section-title-size: clamp(1.4rem, 3vw, 2.2rem);
  --about-number-size: clamp(6rem, 26vw, 20rem);
  --about-gold-line: linear-gradient(180deg, var(--color-champion-gold) 0%, rgba(212, 175, 55, 0.25) 100%);
  scroll-behavior: smooth;
  background-color: var(--color-deep-green);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: clip;
}

.page-about .about-hero {
  position: relative;
  padding: 52px 0 48px;
  background:
    radial-gradient(circle at 82% 18%, rgba(212, 175, 55, 0.1), transparent 26%),
    radial-gradient(circle at 12% 82%, rgba(255, 107, 53, 0.08), transparent 30%),
    linear-gradient(180deg, var(--color-deep-green) 0%, var(--color-surface-green) 100%);
  border-bottom: 1px solid var(--color-border-line);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(46, 95, 74, 0.18) 1px, transparent 1px);
  background-size: 96px 100%;
}

.page-about .about-hero .breadcrumb {
  position: relative;
  margin-bottom: 30px;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 28px;
}

.page-about .about-hero__copy .terminal-index {
  display: inline-block;
  margin-bottom: 18px;
}

.page-about .about-hero h1 {
  font-family: var(--font-title);
  font-size: var(--about-hero-title-size);
  line-height: 1.12;
  letter-spacing: 0.02em;
  margin: 0 0 18px;
  max-width: 18em;
}

.page-about .h1-accent {
  color: var(--color-accent-orange);
}

.page-about .about-hero__lead {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  max-width: 64ch;
  margin: 0 0 22px;
}

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

.page-about .about-hero__glance {
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-card);
  padding: 22px 24px;
  background: rgba(11, 61, 46, 0.72);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.16);
  display: flex;
  flex-direction: column;
}

.page-about .glance-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-about .glance-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(46, 95, 74, 0.55);
}

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

.page-about .glance-item dt {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.page-about .glance-item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.page-about .glance-note {
  color: var(--color-text-secondary);
  font-size: 0.86rem;
  border-left: 2px solid var(--color-accent-orange);
  padding-left: 12px;
  margin: 16px 0 0;
}

.page-about .about-hero__btn {
  margin-top: 18px;
  align-self: flex-start;
}

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

.page-about .about-toc {
  background: var(--color-surface-green);
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-card);
  padding: 20px;
  margin: 32px 0 32px;
}

.page-about .about-toc ol {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
}

.page-about .about-toc li + li {
  border-top: 1px solid var(--color-border-line);
}

.page-about .about-toc a {
  display: flex;
  gap: 14px;
  padding: 12px 6px 12px 12px;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: var(--color-text-primary);
  align-items: baseline;
  transition: color var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible {
  color: var(--color-accent-orange);
}

.page-about .toc-num {
  font-family: var(--font-mono);
  color: var(--color-accent-orange);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.page-about .about-toc__link {
  display: inline-block;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-line);
  color: var(--color-accent-orange);
  text-decoration: none;
  font-size: 0.9rem;
}

.page-about .about-toc__link:hover {
  color: var(--color-text-primary);
}

.page-about .about-section {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.page-about .about-section + .about-section {
  margin-top: 64px;
}

.page-about .about-section__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border-line);
  position: relative;
}

.page-about .about-section__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 1px;
  width: 64px;
  background: var(--color-accent-orange);
}

.page-about .about-section__head .terminal-index {
  flex-shrink: 0;
  font-size: 0.78rem;
}

.page-about .about-section h2 {
  font-family: var(--font-title);
  font-size: var(--about-section-title-size);
  color: var(--color-text-primary);
  margin: 0;
  letter-spacing: 0.02em;
}

.page-about .about-section__lead {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  max-width: 50ch;
  margin: 0 0 20px;
}

.page-about .about-prose p {
  margin: 0 0 16px;
  max-width: 68ch;
}

.page-about .about-prose blockquote {
  border-left: 3px solid var(--color-accent-orange);
  background: rgba(255, 107, 53, 0.08);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 8px 16px 16px 8px;
  color: var(--color-text-primary);
  font-size: 1.05rem;
}

.page-about .gene-list {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  display: grid;
  gap: 12px;
}

.page-about .gene-list li {
  display: grid;
  grid-template-columns: 84px 1fr;
  border: 1px solid var(--color-border-line);
  border-radius: 12px;
  padding: 14px 16px;
  background: rgba(15, 76, 58, 0.4);
}

.page-about .gene-list strong {
  color: var(--color-accent-orange);
  font-size: 0.9rem;
}

.page-about .gene-list span {
  color: var(--color-text-secondary);
}

.page-about .philosophy-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-about .philosophy-item {
  background: var(--color-surface-green);
  border-radius: var(--radius-card);
  padding: 24px;
  border: 1px solid var(--color-border-line);
  transition: border-color var(--transition-base);
}

.page-about .philosophy-item:hover {
  border-color: var(--color-accent-orange);
}

.page-about .philosophy-item__num {
  font-family: var(--font-mono);
  color: var(--color-accent-orange);
  display: block;
  margin-bottom: 10px;
}

.page-about .philosophy-item h3 {
  margin: 0 0 8px;
  color: var(--color-text-primary);
}

.page-about .philosophy-item p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: 0.95rem;
}

.page-about .milestones-block {
  margin: 24px 0 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border-line);
}

.page-about .milestones-block__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1500 / 600;
  object-fit: cover;
}

.page-about .timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--about-gold-line);
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 36px 44px;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 8px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--color-accent-orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.2);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-about .timeline-item:hover::before {
  transform: scale(1.35);
  box-shadow: 0 0 0 8px rgba(255, 107, 53, 0.3);
}

.page-about .timeline-item__meta {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
}

.page-about .timeline-item__year {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.page-about .timeline-item h3 {
  margin: 0 0 8px;
  color: var(--color-accent-orange);
}

.page-about .timeline-item p {
  color: var(--color-text-secondary);
  margin: 0 0 12px;
  max-width: 60ch;
}

.page-about .timeline-item__abstract {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-champion-gold);
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: var(--radius-chip);
  padding: 6px 14px;
  font-size: 0.78rem;
  line-height: 1.4;
  letter-spacing: 0.06em;
}

.page-about .milestone-note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border: 1px dashed var(--color-border-line);
  border-radius: 12px;
  padding: 16px 18px;
  margin-top: 12px;
  color: var(--color-text-secondary);
}

.page-about .milestone-note__icon {
  color: var(--color-accent-orange);
  font-size: 1.2rem;
  line-height: 1.4;
}

.page-about .milestone-note p {
  margin: 0;
}

.page-about .team-panel {
  position: relative;
  background: var(--color-surface-green);
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-card);
  padding: 28px 24px 24px;
  overflow: hidden;
  margin-top: 24px;
}

.page-about .team-panel__number {
  position: absolute;
  top: -30px;
  right: -20px;
  font-family: var(--font-mono);
  font-size: var(--about-number-size);
  font-weight: 700;
  line-height: 1;
  color: rgba(11, 61, 46, 0.6);
  z-index: 0;
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.05em;
}

.page-about .team-panel__copy {
  position: relative;
  z-index: 1;
  max-width: 580px;
}

.page-about .team-panel__copy p {
  margin: 0 0 12px;
  color: var(--color-text-secondary);
}

.page-about .team-panel__img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  margin-top: 24px;
  position: relative;
  z-index: 1;
  aspect-ratio: 900 / 650;
  object-fit: cover;
}

.page-about .team-roles {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .team-roles li {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: baseline;
  padding: 16px 18px;
  border: 1px solid var(--color-border-line);
  border-radius: 14px;
  background: rgba(15, 76, 58, 0.3);
}

.page-about .team-roles__count {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-accent-orange);
}

.page-about .team-roles__label {
  font-weight: 600;
  color: var(--color-text-primary);
}

.page-about .team-roles__desc {
  flex-basis: 100%;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.page-about .qual-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-about .qual-card {
  background: var(--color-surface-green);
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: border-color var(--transition-base);
}

.page-about .qual-card:hover {
  border-color: var(--color-accent-orange);
}

.page-about .qual-card__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-accent-orange);
  border: 1px solid rgba(255, 107, 53, 0.35);
  border-radius: var(--radius-chip);
  padding: 4px 12px;
  margin-bottom: 14px;
}

.page-about .qual-card h3 {
  font-family: var(--font-title);
  margin: 0 0 8px;
  color: var(--color-text-primary);
}

.page-about .qual-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin: 0;
}

.page-about .ecosystem-grid {
  display: grid;
  gap: 16px;
  margin: 24px 0;
}

.page-about .ecosystem-stat {
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-card);
  padding: 24px;
  background: rgba(15, 76, 58, 0.35);
}

.page-about .ecosystem-stat__value {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-accent-orange);
  display: block;
}

.page-about .ecosystem-stat__label {
  color: var(--color-text-primary);
  font-weight: 600;
  display: block;
  margin: 4px 0 8px;
}

.page-about .ecosystem-stat p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

.page-about .ecosystem-visual {
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-top: 8px;
}

.page-about .ecosystem-visual__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 750;
  object-fit: cover;
}

.page-about .about-cta {
  margin-top: 72px;
  border: 1px solid var(--color-border-line);
  border-radius: var(--radius-card);
  background: linear-gradient(90deg, rgba(255, 107, 53, 0.1), rgba(212, 175, 55, 0.05));
  padding: 32px 24px;
}

.page-about .about-cta__content h2 {
  font-family: var(--font-title);
  font-size: var(--about-section-title-size);
  margin: 0 0 8px;
}

.page-about .about-cta__content p {
  color: var(--color-text-secondary);
  margin: 0 0 20px;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-section:target .about-section__head h2 {
  color: var(--color-accent-orange);
}

.page-about .about-section:target .about-section__head::after {
  width: 112px;
  background: var(--color-champion-gold);
}

.page-about .about-section:target .about-section__head {
  border-bottom-color: var(--color-accent-orange);
}

.page-about:has(#sec-genes:target) .about-toc a[href="#sec-genes"],
.page-about:has(#sec-philosophy:target) .about-toc a[href="#sec-philosophy"],
.page-about:has(#sec-milestones:target) .about-toc a[href="#sec-milestones"],
.page-about:has(#sec-team:target) .about-toc a[href="#sec-team"],
.page-about:has(#sec-qualifications:target) .about-toc a[href="#sec-qualifications"],
.page-about:has(#sec-ecosystem:target) .about-toc a[href="#sec-ecosystem"] {
  color: var(--color-accent-orange);
  border-left-color: var(--color-accent-orange);
  background: rgba(255, 107, 53, 0.07);
}

@media (min-width: 640px) {
  .page-about .philosophy-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .page-about .team-roles {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .team-roles li {
    display: grid;
    grid-template-columns: 1fr;
    align-content: start;
    align-items: start;
  }

  .page-about .team-roles__desc {
    flex-basis: auto;
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 72px;
    padding-bottom: 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: stretch;
    gap: 56px;
  }

  .page-about .about-hero__glance {
    margin-top: 0;
  }

  .page-about .team-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
    align-items: center;
    padding: 40px 36px;
  }

  .page-about .team-panel__number {
    top: -40px;
    right: -10px;
  }

  .page-about .team-panel__copy {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .team-panel__img {
    grid-column: 2;
    grid-row: 1;
    margin-top: 0;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 48px;
    padding-bottom: 96px;
  }

  .page-about .about-toc {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    align-self: start;
    margin: 64px 0 0;
  }
}