.page-about {
  --about-hero-mask: linear-gradient(100deg, rgba(10,14,39,0.94) 0%, rgba(10,14,39,0.78) 50%, rgba(10,14,39,0.42) 100%);
  --about-stat-bg: rgba(22,31,69,0.72);
  --about-glow: rgba(108,92,231,0.22);
  background: var(--bg-deep);
  overflow-x: hidden;
  color: var(--text-secondary);
}

.page-about .about-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border-radius: 0 0 24px 24px;
  margin: 0 0 44px;
}

.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.page-about .about-hero-overlay {
  position: absolute;
  inset: 0;
  background: var(--about-hero-mask);
  z-index: 1;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 2;
  padding: 120px 20px 40px;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 22px;
  font-size: 0.8125rem;
}

.page-about .about-hero .breadcrumb a {
  color: var(--neon-cyan);
  text-decoration: none;
}

.page-about .about-hero .breadcrumb a:hover {
  text-decoration: underline;
}

.page-about .about-hero .bc-sep {
  margin: 0 8px;
  color: rgba(185,194,232,0.45);
}

.page-about .about-hero-kicker {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon-cyan);
  margin-bottom: 12px;
  background: rgba(0,229,255,0.1);
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(0,229,255,0.3);
}

.page-about .about-hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.625rem, 5.5vw, 3.2rem);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.18;
  color: var(--text-high);
  max-width: 720px;
}

.page-about .about-hero-subtitle {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 540px;
  color: var(--text-secondary);
}

.page-about .section {
  padding: 44px 0;
  position: relative;
}

.page-about .section-head {
  position: relative;
  margin-bottom: 36px;
  padding-left: 16px;
}

.page-about .section-index {
  position: absolute;
  top: -40px;
  left: -8px;
  font-size: 4.5rem;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.03em;
  color: rgba(0,229,255,0.08);
  pointer-events: none;
  user-select: none;
  z-index: 0;
  white-space: nowrap;
}

.page-about .section-head h2 {
  position: relative;
  z-index: 1;
  margin: 0 0 10px;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-high);
  letter-spacing: -0.01em;
}

.page-about .section-desc {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 640px;
}

.page-about .about-intro-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-about .about-intro-copy p {
  margin: 0 0 16px;
  line-height: 1.75;
  font-size: 0.9375rem;
}

.page-about .about-intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-about .about-archive-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 24px 20px;
  position: relative;
  overflow: hidden;
}

.page-about .about-archive-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, var(--about-glow), transparent 70%);
  pointer-events: none;
}

.page-about .about-archive-label {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--neon-cyan);
  margin-bottom: 16px;
  padding: 4px 12px;
  background: rgba(0,229,255,0.08);
  border-radius: 999px;
  border: 1px solid rgba(0,229,255,0.2);
}

.page-about .about-archive-dl {
  margin: 0;
}

.page-about .about-archive-dl div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(185,194,232,0.1);
  font-size: 0.875rem;
}

.page-about .about-archive-dl div:last-child {
  border-bottom: none;
}

.page-about .about-archive-dl dt {
  color: var(--text-secondary);
  flex-shrink: 0;
}

.page-about .about-archive-dl dd {
  margin: 0;
  color: var(--text-high);
  font-weight: 600;
  text-align: right;
}

.page-about .about-stat-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-stat-item {
  background: var(--about-stat-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 18px 14px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.page-about .about-stat-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-soft);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--neon-cyan);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  line-height: 1.2;
}

.page-about .about-stat-label {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
  display: block;
}

.page-about .about-timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-timeline-media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 220px;
}

.page-about .about-timeline-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  min-height: 220px;
}

.page-about .about-timeline-list {
  position: relative;
  padding-left: 28px;
}

.page-about .about-timeline-list::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(to bottom, rgba(0,229,255,0.55), rgba(74,58,255,0.35));
  border-radius: 2px;
}

.page-about .about-timeline-item {
  position: relative;
  padding: 0 0 34px 22px;
}

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

.page-about .about-timeline-node {
  position: absolute;
  left: -30px;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--neon-cyan);
  box-shadow: 0 0 0 4px rgba(0,229,255,0.12), 0 0 14px rgba(0,229,255,0.35);
}

.page-about .about-timeline-node.is-current {
  border-color: var(--neon-magenta);
  box-shadow: 0 0 0 4px rgba(255,46,154,0.12), 0 0 14px rgba(255,46,154,0.35);
}

.page-about .about-timeline-year {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--neon-cyan);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.page-about .about-timeline-body h3 {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-high);
}

.page-about .about-timeline-body p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-team-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-team-card {
  padding: 20px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.page-about .about-team-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-soft);
}

.page-about .about-role-tag {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.page-about .about-role-num {
  font-size: 0.8125rem;
  color: rgba(185,194,232,0.5);
}

.page-about .about-team-card h3 {
  margin: 0 0 8px;
  font-size: 1.125rem;
  color: var(--text-high);
}

.page-about .about-team-card p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-about .about-team-graph {
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 220px;
}

.page-about .about-team-graph img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  min-height: 220px;
}

.page-about .about-eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-about .about-eco-main {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-eco-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.page-about .about-eco-item:hover {
  border-color: var(--border-soft);
  transform: translateY(-3px);
}

.page-about .about-eco-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--neon-cyan);
  background: rgba(0,229,255,0.08);
  border-radius: 8px;
  padding: 4px 10px;
  white-space: nowrap;
  flex-shrink: 0;
}

.page-about .about-eco-item h3 {
  margin: 0 0 6px;
  font-size: 1.0625rem;
  color: var(--text-high);
}

.page-about .about-eco-item p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-about .about-eco-aside-inner {
  background: linear-gradient(145deg, rgba(74,58,255,0.18), rgba(18,26,58,0.82));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-xl);
  padding: 22px 18px;
}

.page-about .about-eco-aside-label {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--neon-cyan);
  margin-bottom: 14px;
}

.page-about .about-eco-svg-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 8px;
}

.page-about .about-eco-svg-wrap svg {
  width: 100%;
  height: auto;
  max-width: 360px;
}

.page-about .about-eco-node circle {
  transition: stroke-width var(--transition-fast), filter var(--transition-fast);
  cursor: pointer;
}

.page-about .about-eco-node:hover circle {
  stroke-width: 3;
  filter: drop-shadow(0 0 8px rgba(0,229,255,0.35));
}

.page-about .about-eco-node:hover ~ .about-eco-link-cyan,
.page-about .about-eco-node:hover ~ .about-eco-link-magenta,
.page-about .about-eco-node:hover ~ .about-eco-link-purple {
  stroke-width: 2.5;
  stroke-opacity: 1;
}

.page-about .about-eco-link {
  transition: stroke var(--transition-fast), stroke-width var(--transition-fast), stroke-opacity var(--transition-fast);
}

.page-about .about-eco-link-cyan,
.page-about .about-eco-link-magenta,
.page-about .about-eco-link-purple {
  stroke-opacity: 0.9;
}

.page-about .about-eco-stats {
  border-top: 1px solid rgba(185,194,232,0.12);
  padding-top: 8px;
}

.page-about .about-eco-stat {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(185,194,232,0.08);
}

.page-about .about-eco-stat:last-child {
  border-bottom: none;
}

.page-about .about-eco-stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-high);
  flex-shrink: 0;
  min-width: 52px;
}

.page-about .about-eco-stat-text {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.page-about .about-links {
  padding-bottom: 64px;
}

.page-about .about-links-inner {
  position: relative;
  background: var(--bg-raised);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px 20px 28px;
  text-align: center;
  overflow: hidden;
}

.page-about .about-links-inner::before {
  content: '';
  position: absolute;
  top: -70px;
  right: -70px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(108,92,231,0.25), transparent 70%);
  pointer-events: none;
}

.page-about .about-links-inner .section-index {
  color: rgba(0,229,255,0.06);
}

.page-about .about-links-inner h2 {
  position: relative;
  margin: 0 0 8px;
  font-size: 1.625rem;
  color: var(--text-high);
}

.page-about .about-links-inner > p {
  position: relative;
  margin: 0 0 24px;
  font-size: 0.875rem;
}

.page-about .about-links-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  text-align: left;
}

.page-about .about-link-card {
  display: block;
  text-decoration: none;
  background: rgba(22,31,69,0.75);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 14px 14px 16px;
  transition: border-color var(--transition-base), transform var(--transition-base), background var(--transition-base);
}

.page-about .about-link-card:hover {
  border-color: var(--border-soft);
  transform: translateY(-3px);
  background: rgba(22,31,69,1);
}

.page-about .about-link-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--neon-cyan);
  margin-bottom: 5px;
  letter-spacing: 0.08em;
}

.page-about .about-link-title {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-high);
  margin-bottom: 4px;
}

.page-about .about-link-desc {
  display: block;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.6s ease calc(var(--reveal-delay, 0) * 0.08s),
    transform 0.6s ease calc(var(--reveal-delay, 0) * 0.08s);
}

.page-about [data-reveal][data-revealed] {
  opacity: 1;
  transform: none;
}

@media (min-width: 640px) {
  .page-about .about-stat-strip {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .page-about .about-hero {
    min-height: 500px;
    border-radius: 0 0 28px 28px;
  }
  .page-about .about-hero-inner {
    padding: 140px 32px 52px;
  }
  .page-about .about-intro-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 32px;
  }
  .page-about .about-team-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
  }
  .page-about .about-eco-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }
  .page-about .section-index {
    font-size: 5.5rem;
    top: -56px;
    left: -10px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    min-height: 560px;
  }
  .page-about .about-hero-inner {
    padding: 160px 40px 64px;
  }
  .page-about .section {
    padding: 56px 0;
  }
  .page-about .section-head {
    margin-bottom: 44px;
    padding-left: 24px;
  }
  .page-about .section-index {
    font-size: 6.5rem;
    top: -68px;
    left: -14px;
  }
  .page-about .about-timeline {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 44px;
    align-items: center;
  }
  .page-about .about-timeline-media {
    min-height: 380px;
  }
  .page-about .about-team-cards {
    gap: 16px;
  }
  .page-about .about-eco-aside-inner {
    padding: 28px 24px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-links-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-about .about-stat-item,
  .page-about .about-eco-item,
  .page-about .about-team-card,
  .page-about .about-link-card {
    transition: none;
    transform: none;
  }
}

.page-about {
  --reveal-delay: 0.3s;
}