.page-about {
  --timeline-line: linear-gradient(to bottom, rgba(57, 255, 20, 0.5), rgba(57, 255, 20, 0.06));
  --stat-border: rgba(57, 255, 20, 0.3);
}

.page-about .page-hero {
  padding: 64px 0 56px;
  position: relative;
}

.page-about .page-hero-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 14vw, 7.5rem);
  font-weight: 200;
  letter-spacing: 0.06em;
  line-height: 1.04;
  color: var(--primary-text);
  margin: 40px 0 16px;
}

.page-about .hero-title-mark {
  color: var(--data-highlight);
  margin-left: 6px;
}

.page-about .page-hero-kicker {
  font-family: var(--font-index);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--data-highlight);
  text-transform: uppercase;
  margin: 0 0 20px;
}

.page-about .page-hero-text {
  max-width: 620px;
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--dim-text);
  margin: 0;
}

.page-about .page-hero-loc {
  font-family: var(--font-index);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--dim-text);
  margin: 32px 0 0;
}

.page-about .page-index {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(138, 157, 191, 0.16);
}

.page-about .page-index a {
  font-family: var(--font-index);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--dim-text);
  text-decoration: none;
  transition: color var(--transition);
}

.page-about .page-index a:hover {
  color: var(--data-highlight);
}

.page-about .section-header {
  margin-bottom: 40px;
}

.page-about .timeline {
  position: relative;
  padding-top: 6px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 2px;
  bottom: 4px;
  width: 2px;
  transform: translateX(-50%);
  background: var(--timeline-line);
}

.page-about .timeline-node {
  position: relative;
  padding: 0 0 52px 30px;
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  width: 10px;
  height: 10px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--data-highlight);
  box-shadow: 0 0 14px var(--border-glow);
}

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

.page-about .timeline-year {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--data-highlight);
  display: block;
  margin-bottom: 10px;
}

.page-about .timeline-body h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--primary-text);
  margin: 0 0 10px;
}

.page-about .timeline-body p {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--dim-text);
  margin: 0;
}

.page-about .capability-layout {
  margin-top: 8px;
}

.page-about .stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .stat-item {
  padding: 22px 24px;
  background: rgba(13, 28, 57, 0.55);
  border-left: 2px solid var(--stat-border);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-about .stat-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 3.6rem);
  font-weight: 200;
  letter-spacing: 0.02em;
  line-height: 1.1;
  color: var(--primary-text);
  display: block;
}

.page-about .stat-unit {
  font-family: var(--font-index);
  font-size: 0.78rem;
  color: var(--data-highlight);
  margin-left: 4px;
}

.page-about .stat-plus {
  font-family: var(--font-index);
  font-size: 0.72rem;
  color: var(--data-highlight);
  margin-left: 2px;
  vertical-align: super;
}

.page-about .stat-label {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--primary-text);
  margin: 12px 0 4px;
}

.page-about .stat-caption {
  font-size: 0.86rem;
  color: var(--dim-text);
}

.page-about .capability-visual {
  margin-top: 32px;
}

.page-about .media-frame {
  overflow: hidden;
}

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

.page-about .media-frame figcaption {
  font-family: var(--font-index);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--dim-text);
  padding: 12px 4px 0;
}

.page-about .architecture-grid {
  display: grid;
  gap: 36px;
  margin-top: 8px;
}

.page-about .arch-item {
  padding: 22px 0;
  border-bottom: 1px solid rgba(138, 157, 191, 0.14);
}

.page-about .arch-item:last-child {
  border-bottom: none;
}

.page-about .arch-item h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--primary-text);
  margin: 0 0 10px;
}

.page-about .arch-item p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--dim-text);
  margin: 0;
}

.page-about .architecture-visual {
  margin-top: 4px;
}

.page-about .credentials-layout {
  display: grid;
  gap: 36px;
  margin-top: 8px;
}

.page-about .credential-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(57, 255, 20, 0.12);
  border-radius: var(--radius);
  padding: 24px;
  align-self: start;
}

.page-about .credential-visual {
  aspect-ratio: 1 / 1;
}

.page-about .credential-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--primary-text);
  margin: 20px 0 10px;
}

.page-about .credential-card p {
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--dim-text);
  margin: 0;
}

.page-about .credential-copy {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-about .credential-block {
  padding: 24px 0;
  border-bottom: 1px solid rgba(138, 157, 191, 0.14);
}

.page-about .credential-block:last-of-type {
  border-bottom: none;
}

.page-about .credential-block h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--primary-text);
  margin: 0 0 10px;
}

.page-about .credential-block p {
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--dim-text);
  margin: 0;
}

.page-about .credential-copy .btn {
  align-self: flex-start;
  margin-top: 4px;
}

.page-about .page-trust-cta {
  text-align: center;
  padding: 64px 0 80px;
}

.page-about .trust-statement {
  max-width: 720px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--primary-text);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

@media (min-width: 768px) {
  .page-about .page-hero {
    padding: 96px 0 72px;
  }

  .page-about .page-hero-title {
    font-size: clamp(4rem, 9vw, 8.5rem);
    margin-top: 56px;
  }

  .page-about .page-hero-text {
    font-size: 1.12rem;
  }

  .page-about .page-index {
    gap: 24px;
    margin-top: 56px;
  }

  .page-about .section-header {
    margin-bottom: 56px;
  }

  .page-about .timeline {
    padding-left: 0;
    margin-left: 80px;
  }

  .page-about .timeline::before {
    left: 8px;
  }

  .page-about .timeline-node {
    padding-left: 48px;
  }

  .page-about .timeline-node::before {
    left: 8px;
  }

  .page-about .timeline-year {
    font-size: 1.6rem;
    margin-bottom: 12px;
  }

  .page-about .timeline-body h3 {
    font-size: 1.15rem;
  }

  .page-about .timeline-body p {
    font-size: 1rem;
    max-width: 560px;
  }

  .page-about .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .page-about .capability-visual {
    margin-top: 44px;
  }

  .page-about .architecture-grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 64px;
  }

  .page-about .arch-item {
    padding: 28px 0;
  }

  .page-about .credentials-layout {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
    gap: 64px;
  }

  .page-about .credential-card {
    padding: 32px;
  }

  .page-about .credential-copy {
    gap: 24px;
  }

  .page-about .page-trust-cta {
    padding: 88px 0 96px;
  }

  .page-about .trust-statement {
    font-size: 1.15rem;
    margin-bottom: 40px;
  }

  .page-about .cta-actions {
    gap: 20px;
  }
}