.page-about {
  --about-shadow-gold: rgba(255, 215, 0, 0.1);
  --about-shadow-green: rgba(0, 255, 170, 0.12);
  overflow-x: clip;
}

.page-about .about-hero {
  padding-top: var(--space-4);
  padding-bottom: var(--space-6);
}

.page-about .about-hero__rule {
  height: 6px;
  background: linear-gradient(90deg, var(--text-accent) 0 44%, var(--text-accent-alt) 44% 100%);
  margin-bottom: var(--space-4);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 52px);
  line-height: 1.15;
  margin: var(--space-3) 0 var(--space-3);
  letter-spacing: -0.01em;
}

.page-about .about-hero__lead {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.75;
  max-width: 640px;
}

.page-about .about-hero__badge {
  border: var(--border-thick) solid var(--text-accent);
  background: var(--bg-secondary);
  padding: var(--space-4);
  position: relative;
  box-shadow: 8px 8px 0 var(--about-shadow-green);
}

.page-about .about-hero__badge-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-accent-alt);
  border: 1px solid var(--border-color);
  padding: 4px 8px;
  margin-bottom: var(--space-2);
}

.page-about .about-hero__badge-year {
  display: block;
  font-family: var(--font-display);
  font-size: 64px;
  line-height: 1;
  color: var(--text-accent);
}

.page-about .about-hero__badge-label {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}

.page-about .about-hero__badge-text {
  margin-top: var(--space-3);
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-muted);
}

.page-about .about-section-head {
  position: relative;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 3px solid var(--border-color);
}

.page-about .about-section-head::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 88px;
  height: 3px;
  background: var(--text-accent);
}

.page-about .about-section-head .section__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-accent-alt);
  letter-spacing: 0.12em;
  margin-bottom: var(--space-1);
}

.page-about .about-section-head h2 {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.2;
  margin: 0;
}

.page-about .about-section-head__desc {
  margin-top: var(--space-2);
  color: var(--text-muted);
  font-size: 14px;
}

.page-about .about-background {
  position: relative;
}

.page-about .about-background::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 85% 20%, rgba(255, 215, 0, 0.05), transparent 45%);
  pointer-events: none;
}

.page-about .about-background__prose p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-primary);
  margin: 0 0 var(--space-4);
}

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

.page-about .about-background__prose p:first-child::first-letter {
  font-family: var(--font-display);
  color: var(--text-accent);
  font-size: 3em;
  line-height: 0.8;
  float: left;
  padding-right: 8px;
}

.page-about .about-background__facts {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: var(--space-4);
  position: relative;
}

.page-about .about-background__facts::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 32px;
  height: 32px;
  border-top: var(--border-thick) solid var(--text-accent);
  border-left: var(--border-thick) solid var(--text-accent);
}

.page-about .about-background__facts h3 {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-accent-alt);
  margin: 0 0 var(--space-3);
}

.page-about .about-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.page-about .about-facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px dashed var(--border-color);
}

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

.page-about .about-facts li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-facts strong {
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--text-accent);
}

.page-about .about-facts span {
  color: var(--text-muted);
  font-size: 14px;
  text-align: right;
}

.page-about .about-background__note {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.page-about .about-milestones {
  position: relative;
}

.page-about .about-milestones::before {
  content: '';
  position: absolute;
  right: 0;
  top: 64px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(0, 255, 170, 0.06), transparent 62%);
  pointer-events: none;
}

.page-about .about-milestones__image {
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  margin-bottom: var(--space-6);
  position: relative;
  overflow: hidden;
}

.page-about .about-milestones__image::after {
  content: '';
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 32px;
  height: 3px;
  background: var(--text-accent);
}

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

.page-about .timeline {
  margin-top: var(--space-4);
}

.page-about .timeline__row {
  display: grid;
  grid-template-columns: 88px 32px 1fr;
  column-gap: var(--space-2);
  padding-bottom: var(--space-6);
}

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

.page-about .timeline__index {
  text-align: right;
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--text-accent);
  line-height: 1;
  letter-spacing: -0.02em;
  padding-top: 6px;
  transition: color var(--ease-fast);
}

.page-about .timeline__stage {
  display: block;
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.page-about .timeline__side {
  position: relative;
  display: flex;
  justify-content: center;
}

.page-about .timeline__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--text-accent);
  margin-top: 10px;
  position: relative;
  z-index: 1;
  transition: background var(--ease-fast), box-shadow var(--ease-fast);
}

.page-about .timeline__side::after {
  content: '';
  position: absolute;
  top: 32px;
  bottom: 8px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: repeating-linear-gradient(to bottom, var(--border-color) 0 4px, transparent 4px 8px);
}

.page-about .timeline__row:last-child .timeline__side::after {
  display: none;
}

.page-about .timeline__card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: var(--space-4);
  transition: border-color var(--ease-standard), box-shadow var(--ease-standard);
}

.page-about .timeline__card:hover {
  border-color: rgba(255, 215, 0, 0.55);
  box-shadow: 6px 6px 0 var(--about-shadow-gold);
}

.page-about .timeline__row:hover .timeline__year {
  color: var(--text-accent-alt);
}

.page-about .timeline__row:hover .timeline__dot {
  background: var(--text-accent);
  box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.18);
}

.page-about .timeline__card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.3;
  margin: 0 0 var(--space-2);
}

.page-about .timeline__card p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
  margin: 0;
}

.page-about .timeline__details {
  margin-top: var(--space-3);
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-2);
}

.page-about .timeline__details summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-accent-alt);
  transition: color var(--ease-fast);
}

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

.page-about .timeline__details summary::before {
  content: '+';
  font-size: 16px;
  line-height: 1;
  font-weight: 700;
}

.page-about .timeline__details[open] summary::before {
  content: '−';
}

.page-about .timeline__details summary:hover {
  color: var(--text-accent);
}

.page-about .timeline__details p {
  margin-top: var(--space-2);
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-muted);
}

.page-about .about-scope__intro {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-primary);
  max-width: 760px;
}

.page-about .scope-grid {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.page-about .scope-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: var(--space-4) var(--space-3);
  transition: border-color var(--ease-fast), box-shadow var(--ease-fast);
  position: relative;
}

.page-about .scope-card:hover {
  border-color: var(--text-accent);
  box-shadow: 6px 6px 0 var(--about-shadow-gold);
}

.page-about .scope-card__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-about .scope-card__value {
  display: block;
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1.1;
  color: var(--text-accent);
  margin: var(--space-2) 0 var(--space-1);
}

.page-about .scope-card__desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

.page-about .about-scope__more {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-left: var(--border-thick) solid var(--text-accent-alt);
  background: var(--bg-elevated);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-scope__more a {
  color: var(--text-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 215, 0, 0.4);
  transition: border-color var(--ease-fast);
}

.page-about .about-scope__more a:hover {
  border-bottom-color: var(--text-accent);
}

.page-about .about-tech__grid {
  display: grid;
  gap: var(--space-5);
}

.page-about .about-tech__content h3 {
  font-family: var(--font-display);
  font-size: 18px;
  margin: var(--space-4) 0 var(--space-1);
  padding-bottom: var(--space-1);
  border-bottom: 1px solid var(--border-color);
}

.page-about .about-tech__content h3:first-child {
  margin-top: 0;
}

.page-about .about-tech__content p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  margin: 0;
}

.page-about .about-tech__content a {
  color: var(--text-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 215, 0, 0.4);
  transition: border-color var(--ease-fast);
}

.page-about .about-tech__content a:hover {
  border-bottom-color: var(--text-accent);
}

.page-about .about-tech__visual {
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  overflow: hidden;
}

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

.page-about .tech-metrics {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.page-about .tech-metric {
  background: var(--bg-secondary);
  border-left: var(--border-thick) solid var(--text-accent-alt);
  padding: var(--space-3) var(--space-4);
}

.page-about .tech-metric__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--text-accent-alt);
  line-height: 1.2;
}

.page-about .tech-metric__label {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .about-quality__grid {
  display: grid;
  gap: var(--space-5);
}

.page-about .about-quality__visual {
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  overflow: hidden;
}

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

.page-about .about-quality__content p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  margin: 0 0 var(--space-3);
}

.page-about .about-quality__content p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-quality__notes {
  margin-top: var(--space-4);
  padding: var(--space-3);
  border: 1px solid var(--border-color);
  background: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-about .about-quality__notes span {
  font-family: var(--font-mono);
  font-size: 13px;
  padding-left: var(--space-2);
  border-left: 3px solid var(--text-accent-alt);
  color: var(--text-primary);
  line-height: 1.5;
}

.page-about .about-cta__box {
  background: var(--bg-secondary);
  border: var(--border-thick) solid var(--border-color);
  padding: var(--space-5);
  position: relative;
  box-shadow: 8px 8px 0 var(--about-shadow-gold);
}

.page-about .about-cta__box::before {
  content: '';
  position: absolute;
  top: -3px;
  right: 24px;
  width: 56px;
  height: 8px;
  background: var(--text-accent);
}

.page-about .about-cta__box::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 48px;
  width: 32px;
  height: 8px;
  background: var(--text-accent-alt);
}

.page-about .about-cta__box h2 {
  font-family: var(--font-display);
  font-size: 26px;
  line-height: 1.25;
  margin: 0 0 var(--space-2);
}

.page-about .about-cta__box p {
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

@media (min-width: 640px) {
  .page-about .scope-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .page-about .timeline__row {
    grid-template-columns: 116px 40px 1fr;
    column-gap: var(--space-3);
  }

  .page-about .timeline__year {
    font-size: 30px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: var(--space-5);
    padding-bottom: var(--space-7);
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: end;
    margin-top: var(--space-6);
  }

  .page-about .about-tech__grid {
    grid-template-columns: 1fr 0.85fr;
    align-items: start;
  }

  .page-about .about-quality__grid {
    grid-template-columns: 0.8fr 1.2fr;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-about .scope-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .timeline__row {
    grid-template-columns: 128px 48px 1fr;
    column-gap: var(--space-3);
  }
}