.page-about {
  --about-shadow: 0 16px 40px rgba(6, 29, 22, 0.5);
  --about-lime-glow: rgba(198, 255, 0, 0.12);
  --about-blue-glow: rgba(0, 229, 255, 0.08);
  padding: 0 1.25rem 4rem;
  max-width: var(--container-w);
  margin: 0 auto;
  font-family: var(--font-body);
  color: var(--text-primary);
  overflow-x: clip;
}

.page-about .breadcrumb {
  margin: 1.25rem 0 0;
  font-size: 0.8rem;
}
.page-about .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-about .breadcrumb li {
  font-family: var(--font-number);
  color: var(--text-secondary);
}
.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 0.4rem;
  color: var(--border-subtle);
}
.page-about .breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}
.page-about .breadcrumb a:hover {
  color: var(--accent-lime);
}
.page-about .breadcrumb [aria-current="page"] {
  color: var(--accent-lime);
}

.page-about .about-hero {
  position: relative;
  padding: 3rem 0 2.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(31, 94, 74, 0.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 94, 74, 0.28) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}
.page-about .about-hero > * {
  position: relative;
  z-index: 1;
}
.page-about .preview-kicker {
  font-family: var(--font-number);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  color: var(--accent-blue);
  text-transform: uppercase;
  margin: 0 0 1.1rem;
}
.page-about .about-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(1.9rem, 6vw, 3.25rem);
  line-height: 1.12;
  margin: 0 0 1.2rem;
  max-width: 15em;
  color: var(--text-primary);
}
.page-about .about-hero h1::after {
  content: "";
  display: block;
  width: 88px;
  height: 5px;
  margin-top: 1.4rem;
  background: linear-gradient(90deg, var(--accent-lime), var(--accent-blue), transparent);
}
.page-about .preview-desc {
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--text-secondary);
  max-width: 46rem;
  margin: 0 0 2rem;
}
.page-about .chapter-map {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
  border: 1px solid var(--border-subtle);
  background: rgba(15, 76, 58, 0.55);
}
.page-about .chapter-map::-webkit-scrollbar {
  display: none;
}
.page-about .chapter-link {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.1rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  border-right: 1px solid var(--border-subtle);
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}
.page-about .chapter-link:last-child {
  border-right: 0;
}
.page-about .chapter-link::before {
  content: attr(data-index);
  font-family: var(--font-number);
  font-size: 0.7rem;
  color: var(--accent-lime);
  opacity: 0.9;
}
.page-about .chapter-link:hover {
  background: var(--about-lime-glow);
  color: var(--accent-lime);
}
.page-about .chapter-link.is-current {
  background: var(--accent-lime);
  color: #0B3D2E;
}
.page-about .chapter-link.is-current::before {
  color: #0B3D2E;
}

.page-about .section {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-subtle);
}
.page-about .section-head {
  margin-bottom: 2rem;
}
.page-about .section-head .section-index {
  font-family: var(--font-number);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--accent-blue);
  display: block;
  margin-bottom: 0.35rem;
}
.page-about .section-title {
  font-family: var(--font-title);
  font-size: 1.75rem;
  line-height: 1.2;
  margin: 0 0 0.5rem;
  color: var(--text-primary);
}
.page-about .section-desc {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0;
}

.page-about .story-layout {
  display: grid;
  gap: 2rem;
}
.page-about .story-text p {
  font-size: 0.95rem;
  line-height: 1.95;
  color: var(--text-secondary);
  margin: 0 0 1rem;
  max-width: 72ch;
}
.page-about .story-text p:last-child {
  margin-bottom: 0;
}
.page-about .story-text > p:first-child::first-letter {
  font-family: var(--font-title);
  font-size: 2.6rem;
  float: left;
  line-height: 1;
  padding: 0.1rem 0.45rem 0 0;
  color: var(--accent-lime);
}
.page-about .story-media {
  margin: 0;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--about-shadow);
}

.page-about .about-coverage {
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.05), rgba(198, 255, 0, 0.03));
}
.page-about .coverage-layout {
  display: grid;
  gap: 2rem;
}
.page-about .coverage-map {
  margin: 0;
  border: 1px solid var(--border-subtle);
  max-width: 400px;
  box-shadow: var(--about-shadow);
}
.page-about .coverage-panel h3 {
  font-family: var(--font-title);
  font-size: 0.95rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin: 1.5rem 0 0.6rem;
}
.page-about .coverage-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  border-top: 1px solid var(--border-subtle);
}
.page-about .coverage-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.62rem 0.25rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.9rem;
}
.page-about .coverage-league {
  color: var(--text-primary);
  font-weight: 600;
}
.page-about .coverage-num {
  font-family: var(--font-number);
  font-size: 0.82rem;
  color: var(--text-secondary);
}
.page-about .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}
.page-about .tag {
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  letter-spacing: 0.04em;
}
.page-about .coverage-meta {
  font-family: var(--font-number);
  font-size: 0.84rem;
  color: var(--accent-lime);
  margin: 0;
  padding-left: 0.25rem;
  border-left: 3px solid var(--accent-lime);
}
.page-about .coverage-aside {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
}
.page-about .stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  padding: 1rem 1.1rem;
  transform: rotate(-1.2deg);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.page-about .stat-card:nth-child(even) {
  transform: rotate(1.2deg);
}
.page-about .stat-card:hover {
  transform: rotate(0) scale(1.03);
  border-color: var(--accent-lime);
}
.page-about .stat-label {
  display: block;
  font-family: var(--font-number);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
  text-transform: uppercase;
}
.page-about .stat-num {
  display: block;
  font-family: var(--font-title);
  font-size: 1.7rem;
  line-height: 1;
  color: var(--accent-lime);
}

.page-about .milestones-layout {
  display: grid;
  gap: 2rem;
}
.page-about .timeline {
  position: relative;
  padding-left: 2.5rem;
  display: grid;
  gap: 2.2rem;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.3rem;
  bottom: 0.3rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-lime), var(--accent-blue), var(--border-subtle));
  opacity: 0.45;
}
.page-about .timeline-item {
  position: relative;
  opacity: 1;
  transform: none;
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.page-about .timeline-item[data-reveal],
.page-about .timeline-item[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}
.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -2.4rem;
  top: 0.3rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--accent-lime);
  box-shadow: 0 0 0 4px rgba(198, 255, 0, 0.14);
}
.page-about .timeline-item.is-revealed::before {
  animation: aboutNodePulse 0.7s var(--ease);
}
@keyframes aboutNodePulse {
  0% {
    box-shadow: 0 0 0 0 rgba(198, 255, 0, 0.5);
  }
  70% {
    box-shadow: 0 0 0 14px rgba(198, 255, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 4px rgba(198, 255, 0, 0.14);
  }
}
.page-about .timeline-year {
  font-family: var(--font-number);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 0.45rem;
  letter-spacing: 0.02em;
}
.page-about .timeline-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-left: 3px solid var(--accent-lime);
  padding: 1.1rem 1.25rem;
  transition: box-shadow 0.3s var(--ease), border-left-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.page-about .timeline-card:hover {
  border-left-color: var(--accent-blue);
  box-shadow: var(--about-shadow);
  transform: translateX(4px);
}
.page-about .timeline-card h3 {
  font-size: 1rem;
  color: var(--text-primary);
  margin: 0 0 0.45rem;
}
.page-about .timeline-card p {
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
}
.page-about .timeline-figure {
  margin: 0;
  max-width: 300px;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--about-shadow);
}
.page-about .milestone-aside {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  padding: 1.4rem;
  align-self: start;
}
.page-about .milestone-aside .milestones-summary h3 {
  font-family: var(--font-title);
  font-size: 1rem;
  color: var(--text-primary);
  margin: 0 0 1rem;
  letter-spacing: 0.08em;
}
.page-about .data-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border-subtle);
}
.page-about .data-row:last-of-type {
  border-bottom: 0;
}
.page-about .data-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}
.page-about .data-value {
  font-family: var(--font-number);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--accent-lime);
}
.page-about .milestone-note {
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--text-secondary);
  border-top: 1px dashed var(--border-subtle);
  padding-top: 0.8rem;
  margin: 0.9rem 0 1.15rem;
}
.page-about .btn {
  font-family: var(--font-number);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--accent-lime);
  color: var(--accent-lime);
  background: transparent;
  display: inline-block;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}
.page-about .btn:hover {
  background: var(--accent-lime);
  color: #0B3D2E;
}

.page-about .tech-layout {
  display: grid;
  gap: 2rem;
}
.page-about .tech-text p {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0 0 1rem;
}
.page-about .tech-text p:last-child {
  margin-bottom: 0;
}
.page-about .tech-stats {
  border: 1px solid var(--border-subtle);
  background: var(--about-blue-glow);
  align-self: start;
}
.page-about .tech-stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border-subtle);
}
.page-about .tech-stat-row:last-child {
  border-bottom: 0;
}
.page-about .tech-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}
.page-about .tech-value {
  font-family: var(--font-number);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-lime);
}

.page-about .cert-grid {
  display: grid;
  gap: 1.1rem;
}
.page-about .cert-card {
  position: relative;
  padding: 1.4rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}
.page-about .cert-card::after {
  content: "";
  position: absolute;
  right: -2rem;
  top: -2rem;
  width: 5rem;
  height: 5rem;
  background: radial-gradient(circle, rgba(198, 255, 0, 0.18), transparent 70%);
  pointer-events: none;
}
.page-about .cert-index {
  font-family: var(--font-number);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--accent-blue);
  display: block;
  margin-bottom: 0.6rem;
}
.page-about .cert-card h3 {
  font-size: 1.05rem;
  color: var(--text-primary);
  margin: 0 0 0.5rem;
}
.page-about .cert-card p {
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin: 0;
  max-width: 42ch;
}

.page-about .about-next {
  padding: 3.5rem 0 0;
}
.page-about .about-next h2 {
  font-family: var(--font-title);
  font-size: 1.6rem;
  color: var(--text-primary);
  margin: 0 0 1.8rem;
}
.page-about .next-grid {
  display: grid;
  gap: 1rem;
}
.page-about .next-card {
  display: block;
  padding: 1.25rem 1.35rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.page-about .next-card:hover {
  border-color: var(--accent-lime);
  background: var(--bg-secondary);
  transform: translateY(-3px);
}
.page-about .next-index {
  font-family: var(--font-number);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--accent-blue);
  display: block;
  margin-bottom: 0.5rem;
}
.page-about .next-title {
  display: block;
  font-family: var(--font-title);
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}
.page-about .next-desc {
  display: block;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

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

@media (min-width: 768px) {
  .page-about {
    padding: 0 2rem 5rem;
  }
  .page-about .about-hero {
    padding: 4.5rem 0 3rem;
  }
  .page-about .chapter-map {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    overflow: visible;
  }
  .page-about .chapter-link {
    justify-content: center;
    padding: 0.95rem 0.8rem;
  }
  .page-about .section {
    padding: 4.5rem 0;
  }
  .page-about .section-head {
    margin-bottom: 2.75rem;
  }
  .page-about .story-layout {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
    gap: 3rem;
  }
  .page-about .coverage-layout {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
    gap: 2.5rem;
  }
  .page-about .coverage-aside {
    grid-column: 1 / -1;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.1rem;
  }
  .page-about .stat-num {
    font-size: 1.9rem;
  }
  .page-about .milestones-layout {
    grid-template-columns: 1fr 300px;
    align-items: start;
    gap: 2.5rem;
  }
  .page-about .tech-layout {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
    gap: 2.5rem;
  }
  .page-about .cert-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
  }
  .page-about .next-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
  }
}