.page-about {
  --about-accent: #00E5FF;
  --about-accent-strong: #7B2FBE;
  --about-bg: #0A0E27;
  --about-surface: #111838;
  --about-surface-alt: #0B1029;
  --about-ink: #E6EAF7;
  --about-muted: #8A93B4;
  --about-dim: #565F82;
  --about-line: rgba(0, 229, 255, 0.16);
  --about-faint-line: rgba(230, 234, 247, 0.07);
  --about-grid: rgba(0, 229, 255, 0.05);
  --about-warning: #FF6A00;
  --about-milestone-col1: 64px;
  --about-milestone-col2: 14px;
  --about-milestone-gap: 12px;
  --about-timeline-left: calc(var(--about-milestone-col1) + var(--about-milestone-gap) + var(--about-milestone-col2) / 2);
}

.page-about .page-head-wrap {
  position: relative;
  padding-top: 32px;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--about-line);
  background-image:
    linear-gradient(var(--about-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid) 1px, transparent 1px);
  background-size: 26px 26px;
}

.page-about .breadcrumb {
  margin-bottom: 24px;
}

.page-about .page-title {
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 16px;
}

.page-about .about-lead {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-muted);
  margin: 0 0 22px;
  max-width: 860px;
}

.page-about .page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--about-faint-line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--about-dim);
}

.page-about .section {
  padding-top: 56px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--about-faint-line);
}

.page-about .section-head {
  margin-bottom: 36px;
}

.page-about .section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--about-accent);
}

.page-about .intro-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .bracket-panel {
  border-left: 2px solid var(--about-accent);
  padding-left: 16px;
}

.page-about .intro-copy-lead {
  font-size: 19px;
  line-height: 1.7;
  color: var(--about-ink);
  margin-bottom: 16px;
}

.page-about .intro-copy-body {
  color: var(--about-muted);
  line-height: 1.8;
  margin-bottom: 14px;
  font-size: 15px;
}

.page-about .intro-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  margin: 0;
}

.page-about .intro-stat {
  background: var(--about-surface);
  padding: 20px 18px;
  margin: 0;
}

.page-about .intro-stat dt {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--about-muted);
  margin-bottom: 8px;
  letter-spacing: 0.08em;
}

.page-about .intro-stat dd {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: 700;
  color: var(--about-ink);
  line-height: 1;
}

.page-about .intro-stat .stat-note {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--about-dim);
  margin-top: 10px;
}

.page-about .history-hero {
  margin: 0 0 28px;
  border: 1px solid var(--about-line);
}

.page-about .history-hero img {
  display: block;
  width: 100%;
  height: clamp(200px, 42vw, 420px);
  object-fit: cover;
}

.page-about .history-hero figcaption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--about-dim);
  background: var(--about-surface);
  border-top: 1px solid var(--about-line);
}

.page-about .history-context {
  max-width: 820px;
  margin-bottom: 40px;
  color: var(--about-muted);
  font-size: 15px;
  line-height: 1.8;
  border-left: 2px solid var(--about-accent-strong);
  padding-left: 16px;
}

.page-about .history-context p {
  margin: 0;
}

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

.page-about .history-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--about-timeline-left);
  width: 1px;
  background: linear-gradient(180deg, var(--about-accent) 0%, rgba(123, 47, 190, 0.4) 100%);
}

.page-about .milestone {
  display: grid;
  grid-template-columns: var(--about-milestone-col1) var(--about-milestone-col2) 1fr;
  column-gap: var(--about-milestone-gap);
  margin-bottom: 28px;
  position: relative;
}

.page-about .milestone-year {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  text-align: right;
  padding-top: 6px;
  color: var(--about-muted);
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

.page-about .milestone-node {
  justify-self: center;
  width: 10px;
  height: 10px;
  margin-top: 12px;
  transform: rotate(45deg);
  background: var(--about-bg);
  border: 2px solid var(--about-accent);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.12);
  transition: box-shadow 0.2s ease, background 0.2s ease;
}

.page-about .milestone:hover .milestone-year {
  color: var(--about-accent);
  text-shadow: 0 0 14px rgba(0, 229, 255, 0.6);
}

.page-about .milestone:hover .milestone-node {
  background: var(--about-accent);
  box-shadow: 0 0 0 5px rgba(0, 229, 255, 0.2);
}

.page-about .milestone-card {
  position: relative;
  background: var(--about-surface);
  border: 1px solid var(--about-line);
  padding: 18px 18px 16px;
  transition: border-color 0.2s ease;
}

.page-about .milestone-card::before {
  content: "";
  position: absolute;
  right: 12px;
  top: 10px;
  width: 34px;
  height: 8px;
  background-image: linear-gradient(90deg, var(--about-line) 1px, transparent 1px);
  background-size: 6px 1px;
  opacity: 0.6;
}

.page-about .milestone:hover .milestone-card {
  border-color: rgba(0, 229, 255, 0.45);
}

.page-about .milestone-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.page-about .milestone-version {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--about-accent);
  border: 1px solid rgba(0, 229, 255, 0.35);
  background: rgba(0, 229, 255, 0.06);
  padding: 3px 8px;
}

.page-about .milestone-card .card-title {
  font-size: 19px;
  margin: 0 0 8px;
}

.page-about .milestone-card .card-desc {
  color: var(--about-muted);
  font-size: 14px;
  line-height: 1.75;
  margin: 0 0 10px;
}

.page-about .milestone-details {
  border-top: 1px dashed var(--about-line);
  padding-top: 8px;
}

.page-about .milestone-details summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--about-dim);
  padding: 4px 0;
  transition: color 0.2s ease;
}

.page-about .milestone-details summary:hover {
  color: var(--about-accent);
}

.page-about .milestone-details p {
  margin: 8px 0 0;
  color: var(--about-muted);
  font-size: 13px;
  line-height: 1.75;
}

.page-about .history-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.page-about .team-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 36px;
}

.page-about .team-copy {
  color: var(--about-muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .team-copy p {
  margin: 0 0 14px;
}

.page-about .team-media {
  margin: 0;
  border: 1px solid var(--about-line);
  background: var(--about-surface);
}

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

.page-about .team-media figcaption {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--about-dim);
  border-top: 1px solid var(--about-line);
}

.page-about .capability-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .capability-card {
  background: var(--about-surface);
  padding: 20px 18px;
}

.page-about .cap-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--about-accent);
  margin-bottom: 12px;
  letter-spacing: 0.1em;
}

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

.page-about .capability-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-muted);
  margin: 0;
}

.page-about .credentials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .credential-card {
  background: var(--about-surface);
  border: 1px solid var(--about-line);
  display: flex;
  gap: 16px;
  padding: 20px;
  align-items: center;
}

.page-about .credential-card__icp img {
  width: 64px;
  height: 64px;
  flex: 0 0 64px;
  object-fit: contain;
  background: rgba(0, 229, 255, 0.06);
  border: 1px solid var(--about-line);
}

.page-about .credential-body h3 {
  font-size: 18px;
  margin: 0 0 6px;
}

.page-about .credential-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-muted);
  margin: 0;
}

.page-about .about-next-panel {
  position: relative;
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.06), rgba(123, 47, 190, 0.12)),
    var(--about-surface);
  border: 1px solid var(--about-line);
  padding: 32px 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-next-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--about-accent), var(--about-accent-strong));
}

.page-about .about-next-title {
  font-size: 24px;
  margin: 12px 0 10px;
}

.page-about .about-next-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-muted);
  margin: 0;
}

.page-about .about-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

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

  .page-about .credentials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 760px) {
  .page-about {
    --about-milestone-col1: 120px;
    --about-milestone-col2: 18px;
    --about-milestone-gap: 18px;
    --about-timeline-left: calc(var(--about-milestone-col1) + var(--about-milestone-gap) + var(--about-milestone-col2) / 2);
  }

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

  .page-about .intro-layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .milestone {
    margin-bottom: 40px;
  }

  .page-about .milestone-year {
    font-size: 26px;
  }

  .page-about .milestone-card {
    padding: 22px 24px 18px;
  }

  .page-about .team-intro {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 40px;
  }

  .page-about .about-next-panel {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 36px 40px;
  }
}

@media (min-width: 900px) {
  .page-about .credentials-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .credential-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
  }

  .page-about .credential-card__icp img {
    width: 96px;
    height: 96px;
    flex-basis: auto;
  }
}