.page-about {
  padding: var(--space-5) 0 var(--space-7);
}

.page-about .breadcrumb {
  margin-bottom: var(--space-4);
}

.page-about .about-hero {
  margin-bottom: var(--space-7);
}

.page-about .about-hero-grid {
  display: grid;
  gap: var(--space-4);
  align-items: center;
}

.page-about .about-hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-secondary);
  text-shadow: var(--glow-secondary);
  margin: 0 0 var(--space-2);
}

.page-about .page-title {
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 var(--space-3);
  color: var(--color-primary);
  text-shadow: var(--glow-text);
  letter-spacing: 0.02em;
}

.page-about .about-hero-abstract {
  font-weight: 300;
  line-height: 1.75;
  color: var(--color-text-dim);
  max-width: 44rem;
  margin: 0;
}

.page-about .about-hero-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  object-fit: cover;
}

.page-about .about-layout {
  display: block;
}

.page-about .about-sidebar {
  margin-bottom: var(--space-5);
}

.page-about .about-sidebar-inner {
  background: var(--color-card);
  border: 1px solid rgba(255, 215, 0, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.page-about .about-sidebar-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 var(--space-3);
}

.page-about .about-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: about-toc;
}

.page-about .about-toc li {
  counter-increment: about-toc;
  margin-bottom: var(--space-2);
}

.page-about .about-toc a {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  color: var(--color-text-dim);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.25rem 0;
  transition: color 0.3s var(--transition);
}

.page-about .about-toc a::before {
  content: counter(about-toc, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-secondary);
  opacity: 0.8;
}

.page-about .about-toc a:hover {
  color: var(--color-primary);
}

.page-about .about-sidebar-note {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-text-dim);
}

.page-about .about-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.page-about .about-section-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-about .about-section-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-secondary);
  letter-spacing: 0.06em;
}

.page-about .about-section-title {
  font-family: var(--font-headline);
  font-size: 1.6rem;
  line-height: 1.25;
  margin: 0;
  color: var(--color-text);
  position: relative;
  padding-bottom: 0.4rem;
}

.page-about .about-section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 44px;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

.page-about .about-section-body p,
.page-about .about-section-desc {
  font-weight: 300;
  line-height: 1.75;
  color: var(--color-text-dim);
  margin: 0 0 var(--space-3);
}

.page-about .about-section-body p:last-child,
.page-about .about-section-desc:last-child {
  margin-bottom: 0;
}

.page-about .about-section-body strong,
.page-about .about-section-desc strong {
  color: var(--color-primary);
  font-weight: 500;
}

.page-about .about-data-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-about .about-data-card {
  background: var(--color-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-height: 120px;
  transition: box-shadow 0.4s var(--transition), transform 0.4s var(--transition), border-color 0.4s var(--transition);
}

.page-about .about-data-card:hover {
  box-shadow: var(--shadow-primary);
  border-color: rgba(255, 215, 0, 0.4);
  transform: translateY(-3px);
}

.page-about .about-data-card--large {
  grid-column: span 2;
  min-height: 150px;
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.12), rgba(26, 11, 46, 0.9) 60%);
}

.page-about .about-data-card--accent {
  border-color: rgba(0, 229, 255, 0.25);
}

.page-about .about-data-card--accent:hover {
  box-shadow: var(--shadow-secondary);
  border-color: rgba(0, 229, 255, 0.55);
}

.page-about .about-data-value {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.page-about .about-data-card--accent .about-data-value {
  color: var(--color-secondary);
  text-shadow: var(--glow-secondary);
}

.page-about .about-data-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
}

.page-about .about-data-desc {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--color-text-dim);
}

.page-about .about-data-visual {
  margin: 0;
}

.page-about .about-data-img {
  width: 100%;
  height: auto;
  max-height: 280px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.page-about .about-timeline-layout {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-about .about-timeline-main {
  min-width: 0;
}

.page-about .about-timeline {
  position: relative;
  padding-left: 40px;
}

.page-about .about-timeline-svg {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 40px;
  height: 100%;
  pointer-events: none;
}

.page-about .about-timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.page-about .about-timeline-item {
  position: relative;
}

.page-about .about-timeline-dot {
  position: absolute;
  left: -35px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 10px rgba(255, 215, 0, 0.7);
  border: 2px solid var(--color-card);
}

.page-about .about-timeline-dot::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-bg);
  transform: translate(-50%, -50%);
}

.page-about .about-timeline-item:nth-child(even) .about-timeline-dot {
  background: var(--color-secondary);
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
}

.page-about .about-timeline-card {
  background: var(--color-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: box-shadow 0.4s var(--transition), border-color 0.4s var(--transition);
}

.page-about .about-timeline-item:hover .about-timeline-card {
  box-shadow: var(--shadow-card);
  border-color: rgba(255, 215, 0, 0.25);
}

.page-about .about-timeline-year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-secondary);
  margin: 0 0 var(--space-1);
  letter-spacing: 0.14em;
}

.page-about .about-timeline-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-2);
}

.page-about .about-timeline-card p {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--color-text-dim);
  margin: 0;
}

.page-about .about-timeline-card strong {
  color: var(--color-primary);
  font-weight: 500;
}

.page-about .about-timeline-figure {
  margin: 0;
}

.page-about .about-timeline-img {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.page-about .about-cert-accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-about .about-cert-item {
  background: var(--color-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.4s var(--transition), box-shadow 0.4s var(--transition);
}

.page-about .about-cert-item[data-open="true"] {
  border-color: rgba(255, 215, 0, 0.35);
  box-shadow: var(--shadow-primary);
}

.page-about .about-cert-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: var(--color-text);
}

.page-about .about-cert-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  color: var(--color-primary);
  background: rgba(255, 215, 0, 0.1);
}

.page-about .about-cert-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.page-about .about-cert-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.page-about .about-cert-meta {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
}

.page-about .about-cert-panel {
  display: none;
}

.page-about .about-cert-item[data-open="true"] .about-cert-panel {
  display: block;
}

.page-about .about-cert-panel-inner {
  padding: 0 var(--space-4 var_missing_ignore, var(--space-4)) var(--space-4);
}

.page-about .about-cert-panel-inner p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: var(--space-3);
}

.page-about .about-partner-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.page-about .about-partner-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--color-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-2);
  min-height: 100px;
  transition: box-shadow 0.4s var(--transition), border-color 0.4s var(--transition), transform 0.4s var(--transition);
}

.page-about .about-partner-item:hover {
  box-shadow: var(--shadow-secondary);
  border-color: rgba(0, 229, 255, 0.35);
  transform: translateY(-3px);
}

.page-about .about-partner-shape {
  width: 28px;
  height: 28px;
  display: block;
  position: relative;
}

.page-about .about-partner-item--game .about-partner-shape {
  border: 2px solid var(--color-primary);
  border-radius: 8px;
  transform: rotate(45deg);
}

.page-about .about-partner-item--pay .about-partner-shape {
  border: 2px solid var(--color-secondary);
  border-radius: 50%;
}

.page-about .about-partner-item--cloud .about-partner-shape {
  border: 2px solid var(--color-primary);
  border-radius: 4px;
}

.page-about .about-partner-shape::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 4px;
  background: var(--gradient-accent);
  opacity: 0.5;
}

.page-about .about-partner-item--pay .about-partner-shape::after {
  border-radius: 50%;
  inset: 7px;
}

.page-about .about-partner-name {
  font-size: 0.78rem;
  color: var(--color-text);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.page-about .about-team-grid {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-about .about-team-card {
  background: var(--color-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  transition: box-shadow 0.4s var(--transition), border-color 0.4s var(--transition);
}

.page-about .about-team-card:hover {
  box-shadow: var(--shadow-card);
  border-color: rgba(255, 215, 0, 0.25);
}

.page-about .about-team-card--accent {
  border-color: rgba(0, 229, 255, 0.2);
}

.page-about .about-team-card--accent:hover {
  border-color: rgba(0, 229, 255, 0.45);
  box-shadow: var(--shadow-secondary);
}

.page-about .about-team-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0 0 var(--space-2);
}

.page-about .about-team-card--accent .about-team-title {
  color: var(--color-secondary);
}

.page-about .about-team-card p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-dim);
  margin: 0;
}

.page-about .about-team-card strong {
  color: var(--color-primary);
  font-weight: 500;
}

.page-about .about-mission-note {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text-dim);
  margin: var(--space-4) 0 0;
}

.page-about .about-mission-note a {
  color: var(--color-secondary);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  transition: color 0.3s var(--transition), border-color 0.3s var(--transition);
}

.page-about .about-mission-note a:hover {
  color: var(--color-primary);
  border-color: rgba(255, 215, 0, 0.5);
}

@media (max-width: 480px) {
  .page-about .about-data-grid {
    grid-template-columns: 1fr;
  }

  .page-about .about-data-card--large {
    grid-column: span 1;
  }

  .page-about .about-partner-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: var(--space-6);
  }

  .page-about .page-title {
    font-size: 2.6rem;
  }

  .page-about .about-data-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-about .about-data-card--large {
    grid-column: span 2;
  }

  .page-about .about-data-card--accent {
    grid-column: span 1;
  }

  .page-about .about-data-img {
    max-height: 360px;
  }

  .page-about .about-timeline-layout {
    grid-template-columns: minmax(0, 1fr) 260px;
  }

  .page-about .about-timeline-img {
    max-height: 500px;
  }

  .page-about .about-team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-about .about-partner-wall {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-about .about-sidebar {
    position: sticky;
    top: calc(var(--header-upper-height) + var(--header-main-height) + 20px);
    margin-bottom: 0;
  }

  .page-about .about-content {
    gap: var(--space-7);
  }

  .page-about .about-section-title {
    font-size: 1.85rem;
  }
}