.page-about {
  background: var(--c-bg);
  color: var(--c-text);
  overflow-x: hidden;
}
.page-about .breadcrumbs { padding-top: 1.5rem; }

.page-about .about-hero {
  position: relative;
  padding: 3rem 0 3.5rem;
  border-bottom: 2px solid var(--c-border);
  background:
    radial-gradient(circle at 85% 15%, rgba(0,183,255,0.12) 0%, transparent 44%),
    linear-gradient(135deg, rgba(0,255,135,0.06) 0%, transparent 40%);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,183,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,183,255,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -4%;
  top: -2rem;
  width: 42%;
  height: 34%;
  background: linear-gradient(160deg, rgba(0,255,135,0.16) 0%, transparent 100%);
  clip-path: polygon(12% 0, 100% 0, 100% 100%, 0 70%);
  pointer-events: none;
}
.page-about .about-hero-inner {
  position: relative;
  display: grid;
  gap: 2rem;
  align-items: center;
}
.page-about .about-hero-tag {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.26em;
  color: var(--c-green);
  text-transform: uppercase;
}
.page-about .about-hero-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 6vw, 4.4rem);
  line-height: 1;
  margin: 0 0 1.1rem;
  letter-spacing: 0.01em;
  color: var(--c-text);
}
.page-about .about-hero-subtitle {
  max-width: 56ch;
  margin: 0 0 1.6rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-muted);
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}
.page-about .about-hero-board {
  position: relative;
  max-width: 100%;
  margin: 0;
  padding: 1.5rem 1.75rem;
  border: 2px solid var(--c-border);
  background: var(--c-panel);
  box-shadow: var(--shadow);
  transform: rotate(1.5deg);
}
.page-about .about-hero-board::before {
  content: "";
  position: absolute;
  top: -9px;
  left: -9px;
  width: 100%;
  height: 100%;
  border: 2px solid var(--c-green);
  z-index: -1;
}
.page-about .about-board-reading {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--c-green);
  margin-bottom: 0.9rem;
}
.page-about .about-board-dot {
  width: 8px;
  height: 8px;
  background: var(--c-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--c-green);
  animation: page-about-pulse 1.6s ease-in-out infinite;
}
@keyframes page-about-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.page-about .about-board-number {
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 6vw, 3.8rem);
  line-height: 1;
  color: var(--c-text);
}
.page-about .about-board-unit {
  font-size: 0.55em;
  color: var(--c-green);
  margin-left: 0.18em;
}
.page-about .about-board-caption {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--c-muted);
}
.page-about .about-board-bars {
  display: flex;
  gap: 5px;
  margin-top: 1.1rem;
}
.page-about .about-board-bars i {
  display: block;
  height: 30px;
  flex: 1 1 0;
  background: var(--c-green-soft);
  border: 1px solid var(--c-border);
}
.page-about .about-board-bars i:nth-child(2),
.page-about .about-board-bars i:nth-child(4) {
  background: var(--c-blue-soft);
}

.page-about .about-exhibit {
  padding: 3rem 0;
  border-bottom: 2px solid var(--c-border);
}
.page-about .about-exhibit:last-of-type { border-bottom: none; }
.page-about .about-exhibit-head {
  display: flex;
  align-items: center;
  gap: 0.95rem;
  margin-bottom: 1.75rem;
}
.page-about .about-exhibit-head::after {
  content: "";
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--c-border), rgba(42,58,90,0));
}
.page-about .about-exhibit-num {
  padding: 0.35rem 0.65rem;
  border: 2px solid var(--c-border);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1;
  color: var(--c-blue);
}
.page-about .about-exhibit-name {
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: 0.12em;
  color: var(--c-muted);
  text-transform: uppercase;
  white-space: nowrap;
}

.page-about .about-exhibit-body {
  display: grid;
  gap: 1.6rem;
}
.page-about .about-origin-copy p {
  margin: 0 0 1rem;
  color: var(--c-muted);
  line-height: 1.75;
  font-size: 0.95rem;
}
.page-about .about-origin-copy p:last-child { margin-bottom: 0; }
.page-about .about-origin-copy strong {
  color: var(--c-green);
  font-weight: 700;
}
.page-about .about-origin-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
  align-content: start;
}
.page-about .about-stat {
  margin: 0;
  padding: 1.2rem 1rem;
  text-align: center;
}
.page-about .about-stat-value {
  display: block;
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  line-height: 1.1;
  color: var(--c-green);
}
.page-about .about-stat-label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  color: var(--c-muted);
}

.page-about .about-local-grid {
  display: grid;
  gap: 2rem;
}
.page-about .about-local-image { position: relative; }
.page-about .about-local-image .media-frame { margin: 0; }
.page-about .about-local-tag {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  padding: 0.55rem 1rem;
  display: flex;
  flex-direction: column;
  border-left: 4px solid var(--c-orange);
  background: var(--c-panel);
}
.page-about .about-local-tag-label {
  font-size: 0.72rem;
  color: var(--c-muted);
}
.page-about .about-local-tag-value {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--c-text);
}
.page-about .about-local-copy .about-lead {
  margin-bottom: 0.85rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--c-text);
}
.page-about .about-local-copy p {
  margin: 0 0 1rem;
  color: var(--c-muted);
  line-height: 1.75;
  font-size: 0.95rem;
}
.page-about .about-local-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}
.page-about .about-local-list li {
  position: relative;
  padding-left: 1.7rem;
  color: var(--c-muted);
  line-height: 1.6;
  font-size: 0.92rem;
}
.page-about .about-local-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  background: var(--c-green);
  box-shadow: 0 0 8px var(--c-green);
}

.page-about .about-milestone-grid {
  display: grid;
  gap: 2rem;
}
.page-about .about-milestone-visual .media-frame { margin: 0; }
.page-about .about-timeline-wrap .section-title { margin-top: 0; }
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}
.page-about .about-timeline-item {
  position: relative;
  padding-left: 2rem;
}
.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: -1.5rem;
  width: 3px;
  background: var(--c-border);
}
.page-about .about-timeline-item:last-child::before { bottom: 0; }
.page-about .about-timeline-marker {
  position: absolute;
  left: 0;
  top: 0.35rem;
  width: 15px;
  height: 15px;
  border: 3px solid var(--c-bg);
  background: var(--c-green);
  box-shadow: 0 0 0 2px var(--c-green);
  z-index: 1;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.page-about .about-timeline-item:hover .about-timeline-marker,
.page-about .about-timeline-item:focus-within .about-timeline-marker {
  transform: scale(1.25);
  box-shadow: 0 0 0 3px var(--c-green), 0 0 16px var(--c-green);
}
.page-about .about-timeline-card {
  margin: 0;
  padding: 1.1rem 1.2rem;
}
.page-about .about-timeline-year {
  display: inline-block;
  color: var(--c-blue);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}
.page-about .about-timeline-card h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--c-text);
}
.page-about .about-timeline-card p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.6;
  font-size: 0.88rem;
}

.page-about .about-team-intro {
  display: grid;
  gap: 2rem;
}
.page-about .about-team-copy p {
  margin: 0 0 1rem;
  color: var(--c-muted);
  line-height: 1.75;
  font-size: 0.95rem;
}
.page-about .about-team-media { margin-top: 1.1rem; }
.page-about .about-team-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  border: 2px solid var(--c-border);
  background: var(--c-panel);
}
.page-about .about-team-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,183,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,183,255,0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
.page-about .about-team-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-about .about-team-roles {
  display: grid;
  gap: 1rem;
}
.page-about .about-role {
  position: relative;
  margin: 0;
  padding: 1.35rem 1.4rem;
  border-left: 4px solid var(--c-green);
}
.page-about .about-role-num {
  display: inline-block;
  color: var(--c-green);
  font-size: 0.82rem;
  margin-bottom: 0.45rem;
}
.page-about .about-role h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-head);
  font-size: 1.15rem;
  color: var(--c-text);
}
.page-about .about-role p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.6;
  font-size: 0.88rem;
}

.page-about .about-cert-panel {
  margin: 0;
  padding: 1.5rem;
}
.page-about .about-cert-header .section-title { margin-top: 0; }
.page-about .about-cert-header p {
  margin: 0 0 1.4rem;
  color: var(--c-muted);
  line-height: 1.75;
  font-size: 0.95rem;
}
.page-about .about-cert-grid {
  display: grid;
  gap: 1rem;
}
.page-about .about-cert-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--c-border);
  background: var(--c-bg);
}
.page-about .about-cert-icon {
  flex: 0 0 auto;
  width: 2.8rem;
  height: 2.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--c-green);
  color: var(--c-green);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
}
.page-about .about-cert-item h3 {
  margin: 0 0 0.3rem;
  font-family: var(--font-head);
  font-size: 1rem;
  color: var(--c-text);
}
.page-about .about-cert-item p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.5;
  font-size: 0.84rem;
}

.page-about .about-next {
  padding: 3rem 0 4rem;
}
.page-about .about-next-panel {
  margin: 0;
  padding: 2rem;
  border: 2px solid var(--c-green);
  background: var(--c-green-soft);
  box-shadow: var(--shadow);
}
.page-about .about-next-panel h2 {
  margin: 0 0 1rem;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  color: var(--c-text);
}
.page-about .about-next-panel > p {
  max-width: 64ch;
  margin: 0;
  color: var(--c-muted);
  line-height: 1.75;
  font-size: 0.95rem;
}
.page-about .about-next-panel > p strong { color: var(--c-text); }
.page-about .about-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.5rem;
}
.page-about .about-details {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--c-border);
}
.page-about .about-details summary {
  cursor: pointer;
  color: var(--c-blue);
  font-weight: 700;
  font-size: 0.92rem;
  user-select: none;
}
.page-about .about-details summary:hover { color: var(--c-green); }
.page-about .about-details summary:focus-visible {
  outline: 2px solid var(--c-green);
  outline-offset: 2px;
}
.page-about .about-details p {
  margin: 1rem 0 0;
  color: var(--c-muted);
  line-height: 1.7;
  font-size: 0.9rem;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-board-dot,
  .page-about .about-timeline-marker {
    animation: none;
    transition: none;
  }
}

@media (min-width: 540px) {
  .page-about .about-origin-stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 4.5rem 0 5rem;
  }
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
    gap: 3rem;
  }
  .page-about .about-hero-board {
    justify-self: end;
    width: 340px;
    transform: rotate(2deg) translateX(1rem);
    box-shadow: var(--shadow), 0 0 24px rgba(0,255,135,0.08);
  }

  .page-about .about-exhibit {
    padding: 4.5rem 0;
  }
  .page-about .about-exhibit-body {
    grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
    gap: 2.5rem;
    align-items: center;
  }
  .page-about .about-exhibit-head {
    margin-bottom: 2.4rem;
  }
  .page-about .about-exhibit-num {
    font-size: 1rem;
    padding: 0.45rem 0.75rem;
  }
  .page-about .about-exhibit-name {
    font-size: 1.15rem;
  }

  .page-about .about-local-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 3rem;
    align-items: center;
  }
  .page-about .about-local-image .media-frame {
    transform: rotate(-1.2deg);
  }
  .page-about .about-local-tag {
    transform: rotate(-1.2deg) translate(0.5rem, 1.25rem);
  }

  .page-about .about-milestone-grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 3.5rem;
    align-items: center;
  }
  .page-about .about-milestone-visual {
    order: 2;
  }
  .page-about .about-milestone-visual .media-frame {
    transform: rotate(1.5deg);
  }
  .page-about .about-timeline-wrap {
    order: 1;
  }

  .page-about .about-team-intro {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.9fr);
    gap: 3rem;
    align-items: start;
  }
  .page-about .about-team-media {
    margin-top: 0;
  }
  .page-about .about-team-roles {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
  .page-about .about-role {
    padding: 1.6rem 1.5rem;
  }

  .page-about .about-cert-panel {
    padding: 2.5rem;
  }
  .page-about .about-cert-header {
    display: grid;
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
    gap: 2.5rem;
    align-items: center;
  }
  .page-about .about-cert-header p {
    margin: 0;
  }
  .page-about .about-cert-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-top: 2rem;
  }

  .page-about .about-next-panel {
    padding: 3rem;
  }
}