.page-about {
  --about-grid-line: rgba(0, 240, 255, 0.25);
  --about-purple-grid: rgba(181, 55, 242, 0.14);
  position: relative;
}

/* ===== Hero ===== */
.page-about .about-hero {
  position: relative;
  padding: 96px 0 72px;
  overflow: hidden;
}
.page-about .about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-purple-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-purple-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 48px;
  font-size: 0.85rem;
}
.page-about .breadcrumb-item {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.3s ease;
}
.page-about .breadcrumb-item:hover {
  color: var(--gold);
}
.page-about .breadcrumb-item.is-current {
  color: var(--text);
  font-weight: 600;
}
.page-about .breadcrumb-sep {
  color: var(--text-dim);
  opacity: 0.5;
}
.page-about .hero-grid {
  display: grid;
  gap: 40px;
}
.page-about .page-title {
  margin: 8px 0 16px;
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
}
.page-about .hero-lead {
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--purple), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 20px;
  line-height: 1.5;
}
.page-about .hero-text {
  color: var(--text-dim);
  max-width: 560px;
  line-height: 1.8;
  font-size: 0.95rem;
}
.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.page-about .hero-media {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  background: var(--bg-panel);
}
.page-about .hero-media img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ===== Section Head ===== */
.page-about .section-head {
  margin-bottom: 48px;
  position: relative;
}
.page-about .section-head .kicker {
  color: var(--cyan);
}
.page-about .section-head h2 {
  margin: 10px 0 14px;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1.2;
}
.page-about .section-head::after {
  content: '';
  display: block;
  width: 48px;
  height: 2px;
  background: var(--purple);
}

/* ===== Identity ===== */
.page-about .about-identity {
  background: var(--bg);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .identity-grid {
  display: grid;
  gap: 48px;
}
.page-about .identity-copy > p {
  color: var(--text-dim);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 0.95rem;
}
.page-about .principle-list {
  margin-top: 32px;
  border-bottom: 1px solid var(--line);
}
.page-about .principle-item {
  display: flex;
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.page-about .principle-no {
  color: var(--cyan);
  font-size: 0.8rem;
  padding-top: 4px;
  min-width: 24px;
}
.page-about .principle-item h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
  font-family: var(--font-head);
}
.page-about .principle-item p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.6;
}
.page-about .identity-modules {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  padding: 28px 24px;
  align-self: start;
}
.page-about .modules-title {
  color: var(--text-dim);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  margin-bottom: 16px;
}
.page-about .module-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  transition: color 0.3s ease, padding-left 0.3s ease;
}
.page-about .module-link:hover {
  color: var(--gold);
  padding-left: 10px;
}
.page-about .module-link-meta {
  color: var(--text-dim);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

/* ===== Milestones ===== */
.page-about .about-milestones {
  position: relative;
  padding-top: 96px;
  padding-bottom: 96px;
}
.page-about .about-milestones::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.page-about .about-milestones .container {
  position: relative;
  z-index: 1;
}
.page-about .timeline-layout {
  display: grid;
  gap: 48px;
}
.page-about .timeline {
  position: relative;
  padding-left: 32px;
}
.page-about .timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--cyan);
  opacity: 0.4;
}
.page-about .timeline-item {
  position: relative;
  margin-bottom: 40px;
}
.page-about .timeline-item:last-child {
  margin-bottom: 0;
}
.page-about .timeline-dot {
  position: absolute;
  left: -31px;
  top: 8px;
  width: 15px;
  height: 15px;
  background: var(--gold);
  transform: rotate(45deg);
  z-index: 2;
  box-shadow: 0 0 12px rgba(242, 201, 76, 0.5);
}
.page-about .timeline-card {
  border-left: 2px solid var(--gold);
  padding: 4px 0 4px 24px;
  transition: background 0.3s ease, transform 0.3s ease;
}
.page-about .timeline-item:hover .timeline-card {
  background: var(--bg-raised);
  transform: translateY(-2px);
}
.page-about .timeline-year {
  color: var(--gold);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.page-about .timeline-card h3 {
  font-size: 1.15rem;
  margin: 4px 0 8px;
  font-family: var(--font-head);
}
.page-about .timeline-card p {
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 0;
}
.page-about .timeline-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg-panel);
}
.page-about .timeline-figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.page-about .timeline-figure figcaption {
  padding: 12px 16px;
  color: var(--text-dim);
  font-size: 0.82rem;
  border-top: 1px solid var(--line);
}

/* ===== Scale ===== */
.page-about .about-scale {
  background: var(--bg-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 56px;
}
.page-about .stat-card {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 32px 20px;
  text-align: center;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.page-about .stat-card:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}
.page-about .stat-num {
  color: var(--orange);
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
}
.page-about .stat-label {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 10px 0 0;
}
.page-about .scale-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
.page-about .scale-content h3 {
  font-size: 1.3rem;
  margin-bottom: 16px;
  font-family: var(--font-head);
}
.page-about .scale-content p {
  color: var(--text-dim);
  line-height: 1.8;
  font-size: 0.92rem;
  margin-bottom: 16px;
}
.page-about .scale-facts {
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-about .scale-facts li {
  padding: 14px 0 14px 30px;
  position: relative;
  color: var(--text);
  font-size: 0.9rem;
  border-top: 1px solid var(--line);
}
.page-about .scale-facts li::before {
  content: '//';
  position: absolute;
  left: 0;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  top: 14px;
}
.page-about .scale-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--bg);
}
.page-about .scale-figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ===== Credentials ===== */
.page-about .about-credentials {
  background: var(--bg);
}
.page-about .credential-grid {
  display: grid;
  gap: 24px;
}
.page-about .credential-card {
  background: var(--bg-raised);
  border: 1px solid rgba(242, 201, 76, 0.45);
  padding: 32px 28px;
  position: relative;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.page-about .credential-card:hover {
  border-color: var(--gold);
  transform: translateY(-3px);
}
.page-about .credential-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
}
.page-about .credential-code {
  color: var(--gold);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}
.page-about .credential-card h3 {
  font-size: 1.1rem;
  margin: 0 0 10px;
  font-family: var(--font-head);
}
.page-about .credential-card p {
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.7;
  margin: 0;
}
.page-about .credential-note {
  margin-top: 36px;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Callout ===== */
.page-about .about-callout {
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.page-about .callout-box {
  background: linear-gradient(135deg, rgba(181, 55, 242, 0.16), rgba(255, 107, 53, 0.1));
  border: 1px solid var(--purple);
  padding: 48px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-about .callout-box::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -40px;
  width: 120px;
  height: 120px;
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
  opacity: 0.4;
  pointer-events: none;
}
.page-about .callout-kicker {
  color: var(--cyan);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  margin-bottom: 12px;
}
.page-about .callout-box h2 {
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 3vw, 2rem);
}
.page-about .callout-box p {
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 28px;
  font-size: 0.92rem;
  line-height: 1.7;
}
.page-about .callout-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* ===== Media Queries ===== */
@media (min-width: 768px) {
  .page-about .hero-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .page-about .identity-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
    gap: 56px;
  }
  .page-about .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .scale-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }
  .page-about .credential-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .page-about .credential-card:last-child {
    grid-column: span 2;
  }
  .page-about .callout-box {
    padding: 64px 48px;
  }
}

@media (min-width: 1024px) {
  .page-about .timeline-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 56px;
    align-items: start;
  }
  .page-about .timeline {
    padding-left: 0;
  }
  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-0.5px);
  }
  .page-about .timeline-item {
    width: 50%;
    padding-left: 0;
    padding-right: 44px;
    margin-bottom: 56px;
  }
  .page-about .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 44px;
  }
  .page-about .timeline-dot {
    left: auto;
    right: -7px;
  }
  .page-about .timeline-item:nth-child(even) .timeline-dot {
    right: auto;
    left: -7px;
  }
  .page-about .timeline-card {
    border-left: none;
    border-right: 2px solid var(--gold);
    padding: 4px 24px 4px 0;
    text-align: right;
  }
  .page-about .timeline-item:nth-child(even) .timeline-card {
    border-right: none;
    border-left: 2px solid var(--gold);
    padding: 4px 0 4px 24px;
    text-align: left;
  }
  .page-about .credential-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .credential-card:last-child {
    grid-column: auto;
  }
  .page-about .about-callout {
    padding-top: 56px;
  }
}