.page-about {
  --about-purple-glow: rgba(177, 75, 255, 0.22);
  --about-blue-glow: rgba(0, 229, 255, 0.1);
  --about-red-glow: rgba(255, 59, 92, 0.12);
  background: var(--bg-deep);
  color: var(--text-bright);
  line-height: 1.75;
}

.page-about .about-hero {
  padding: 40px 0 32px;
  border-bottom: 1px solid var(--border-soft);
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -40px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, var(--about-purple-glow) 0%, transparent 70%);
  pointer-events: none;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-about .about-hero-content {
  position: relative;
  z-index: 1;
}

.page-about .about-hero-sub {
  font-family: var(--font-head);
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--blue);
  margin: 8px 0 16px;
}

.page-about .about-hero-desc {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 56ch;
}

.page-about .about-hero-figure {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-soft);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center;
}

.page-about .about-layout {
  display: grid;
  gap: 36px;
  padding: 36px 0 72px;
}

.page-about .about-toc-inner {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 22px 20px;
}

.page-about .about-toc-title {
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.page-about .about-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-toc-list a {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.page-about .about-toc-list a:hover,
.page-about .about-toc-list a:focus-visible {
  color: var(--purple);
  border-color: var(--purple);
  background: rgba(177, 75, 255, 0.1);
  outline: none;
}

.page-about .about-body {
  min-width: 0;
}

.page-about .about-section {
  padding: 40px 0;
  border-top: 1px solid var(--border-soft);
  position: relative;
}

.page-about .about-section:first-child {
  border-top: 0;
  padding-top: 8px;
}

.page-about .about-section h2 {
  font-family: var(--font-head);
  font-size: 26px;
  line-height: 1.4;
  margin: 4px 0 12px;
}

.page-about .about-section .section-intro {
  color: var(--text-muted);
  font-size: 15px;
  margin: 10px 0 20px;
  max-width: 60ch;
}

.page-about .about-section-milestones {
  background: radial-gradient(600px 220px at 20% 0%, var(--about-purple-glow) 0%, transparent 70%);
}

.page-about .about-section-stats {
  background: radial-gradient(600px 220px at 60% 0%, var(--about-blue-glow) 0%, transparent 70%);
}

.page-about .about-section-team {
  background: radial-gradient(600px 240px at 20% 0%, var(--about-red-glow) 0%, transparent 70%);
}

.page-about .prose p {
  color: var(--text-bright);
  font-size: 15px;
  margin: 0 0 16px;
  max-width: 68ch;
}

.page-about .prose p:last-child {
  margin-bottom: 0;
}

.page-about .about-quote {
  margin: 28px 0;
  padding: 20px 24px;
  background: var(--bg-panel);
  border-left: 4px solid var(--purple);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  box-shadow: 0 8px 30px rgba(177, 75, 255, 0.1);
}

.page-about .about-quote p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-bright);
  font-weight: 500;
}

.page-about .about-timeline {
  list-style: none;
  padding: 0;
  margin: 36px 0 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--purple) 0%, var(--blue) 100%);
  opacity: 0.55;
}

.page-about .about-timeline-item {
  position: relative;
  padding-left: 40px;
  margin-bottom: 28px;
}

.page-about .about-timeline-marker {
  position: absolute;
  left: 4px;
  top: 22px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 3px solid var(--purple);
  box-shadow: 0 0 12px var(--about-purple-glow);
  transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
}

.page-about .about-timeline-item:hover .about-timeline-marker,
.page-about .about-timeline-item:focus-within .about-timeline-marker {
  background: var(--purple);
  box-shadow: 0 0 20px var(--purple);
  transform: scale(1.12);
}

.page-about .about-timeline-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 20px 22px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.page-about .about-timeline-item:hover .about-timeline-card,
.page-about .about-timeline-item:focus-within .about-timeline-card {
  border-color: var(--purple);
  box-shadow: 0 8px 30px rgba(177, 75, 255, 0.14);
  transform: translateY(-2px);
}

.page-about .about-timeline-time {
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: 0.18em;
  color: var(--purple);
  margin-bottom: 4px;
}

.page-about .about-timeline-card h3 {
  font-size: 18px;
  margin: 0 0 6px;
  color: var(--text-bright);
}

.page-about .about-timeline-card p:last-child {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

.page-about .about-figure {
  margin: 36px 0 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-soft);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.3);
}

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

.page-about .about-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.page-about .about-stat-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-top: 3px solid var(--purple);
  border-radius: var(--radius-card);
  padding: 24px 18px;
  text-align: center;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.page-about .about-stat-card:nth-child(2) {
  border-top-color: var(--blue);
}

.page-about .about-stat-card:nth-child(3) {
  border-top-color: var(--red);
}

.page-about .about-stat-card:nth-child(4) {
  border-top-color: var(--purple);
}

.page-about .about-stat-card:hover {
  border-color: var(--border-soft);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  transform: translateY(-3px);
}

.page-about .about-stat-card:nth-child(2n):hover {
  box-shadow: 0 10px 30px rgba(0, 229, 255, 0.1);
}

.page-about .about-stat-num {
  font-family: var(--font-head);
  font-size: 38px;
  letter-spacing: 0.04em;
  color: var(--text-bright);
  line-height: 1.15;
  margin: 0;
}

.page-about .about-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin: 8px 0 0;
  letter-spacing: 0.06em;
}

.page-about .about-data-note {
  margin-top: 24px;
  padding: 18px 20px;
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: var(--radius-card);
}

.page-about .about-data-note p {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
}

.page-about .about-team-grid {
  display: grid;
  gap: 18px;
  margin-top: 32px;
}

.page-about .about-team-card {
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  padding: 26px 24px;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.page-about .about-team-card:hover {
  border-color: var(--border-soft);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  transform: translateY(-3px);
}

.page-about .about-team-count {
  font-family: var(--font-head);
  font-size: 40px;
  line-height: 1;
  color: var(--purple);
  margin: 0 0 12px;
}

.page-about .about-team-card:nth-child(2) .about-team-count {
  color: var(--blue);
}

.page-about .about-team-card:nth-child(3) .about-team-count {
  color: var(--red);
}

.page-about .about-team-count span {
  font-size: 15px;
  color: var(--text-muted);
  margin-left: 2px;
}

.page-about .about-team-card h3 {
  font-size: 18px;
  margin: 0 0 8px;
  color: var(--text-bright);
}

.page-about .about-team-card p:last-child {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}

.page-about .about-more-links {
  margin-top: 40px;
  padding: 28px 24px;
  background: var(--bg-panel);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
}

.page-about .about-more-links h3 {
  font-size: 18px;
  margin: 0 0 16px;
  color: var(--text-bright);
}

.page-about .about-more-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-more-list a {
  display: inline-block;
  color: var(--blue);
  text-decoration: none;
  font-size: 15px;
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.page-about .about-more-list a:hover,
.page-about .about-more-list a:focus-visible {
  color: var(--purple);
  border-bottom-color: var(--purple);
  outline: none;
}

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 56px 0 48px;
  }

  .page-about .about-hero-figure img {
    height: 320px;
  }

  .page-about .about-section {
    padding: 56px 0;
  }

  .page-about .about-stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

  .page-about .about-stat-num {
    font-size: 44px;
  }

  .page-about .about-team-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-team-card:nth-child(2) {
    transform: translateY(10px);
  }

  .page-about .about-team-card:nth-child(3) {
    transform: translateY(4px);
  }

  .page-about .about-more-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 4px 24px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding: 80px 0 72px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 56px;
  }

  .page-about .about-hero-figure img {
    height: 380px;
  }

  .page-about .about-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
    padding: 48px 0 110px;
  }

  .page-about .about-toc {
    position: sticky;
    top: 110px;
  }

  .page-about .about-toc-inner {
    padding: 28px 24px;
  }

  .page-about .about-toc-list {
    display: block;
  }

  .page-about .about-toc-list li {
    margin-bottom: 4px;
  }

  .page-about .about-toc-list a {
    display: block;
    padding: 10px 16px;
    border: 0;
    border-left: 3px solid transparent;
    border-radius: 0;
    font-size: 15px;
    color: var(--text-muted);
  }

  .page-about .about-toc-list a:hover,
  .page-about .about-toc-list a:focus-visible {
    border-left-color: var(--purple);
    background: rgba(177, 75, 255, 0.08);
    color: var(--purple);
  }

  .page-about .about-section {
    padding: 72px 0;
  }

  .page-about .about-section h2 {
    font-size: 34px;
  }

  .page-about .prose p,
  .page-about .about-timeline-card p:last-child,
  .page-about .about-team-card p:last-child {
    font-size: 16px;
  }

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

  .page-about .about-timeline-card {
    padding: 22px 26px;
  }

  .page-about .about-timeline-time {
    font-size: 15px;
  }

  .page-about .about-timeline-card h3 {
    font-size: 20px;
  }

  .page-about .about-stat-card {
    padding: 30px 20px;
  }

  .page-about .about-stat-num {
    font-size: 50px;
  }

  .page-about .about-data-note {
    margin-top: 28px;
    padding: 20px 24px;
  }

  .page-about .about-more-links {
    margin-top: 48px;
    padding: 32px 28px;
  }

  .page-about .about-more-list a {
    font-size: 16px;
  }
}