.page-about {
  --about-line-angle: 165deg;
  --about-card-glow: rgba(212, 175, 55, 0.16);
  position: relative;
  background: var(--gb-bg);
  color: var(--gb-text);
  overflow-x: hidden;
}

.page-about .site-container {
  width: min(100% - 40px, var(--gb-container));
  margin-inline: auto;
}

.page-about .breadcrumbs {
  padding-top: calc(var(--gb-header-h) + 28px);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--gb-text-muted);
}

.page-about .breadcrumbs a {
  color: var(--gb-link);
  text-decoration: none;
}

.page-about .breadcrumbs-sep {
  color: var(--gb-border);
}

.page-about .breadcrumbs-current {
  color: var(--gb-gold);
  font-family: var(--gb-font-mono);
}

.page-about .section {
  padding-block: var(--gb-section-space);
}

.page-about .section-heading {
  margin-bottom: 28px;
}

.page-about .section-label {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--gb-gold);
  font-family: var(--gb-font-mono);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.85rem;
}

.page-about .section-label::before {
  content: "";
  width: 36px;
  height: 1px;
  background: var(--gb-gold-gradient);
}

.page-about .section-heading h2,
.page-about .cta-strip h2 {
  font-family: var(--gb-font-title);
  font-size: clamp(1.8rem, 3.4vw, 3rem);
  line-height: 1.1;
  margin: 12px 0 0;
  max-width: 24ch;
  color: var(--gb-gold-light);
}

.page-about .lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--gb-text-muted);
}

/* Hero */
.page-about .about-hero {
  position: relative;
  padding-bottom: var(--gb-section-space);
}

.page-about .about-hero-grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .about-hero-copy {
  position: relative;
  z-index: 2;
}

.page-about .about-hero-copy .lead {
  margin-block: 24px 16px;
  max-width: 58ch;
}

.page-about .about-hero-copy p:not(.lead) {
  color: var(--gb-text-muted);
  max-width: 58ch;
}

.page-about .about-hero h1 {
  font-family: var(--gb-font-title);
  font-size: clamp(2.65rem, 5.6vw, 4.7rem);
  line-height: 1.04;
  margin: 18px 0 0;
  letter-spacing: 0.01em;
  color: var(--gb-gold);
  text-wrap: balance;
}

@supports (background-clip: text) or (-webkit-background-clip: text) {
  .page-about .about-hero h1 {
    background: var(--gb-gold-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-about .hero-media {
  margin: 0;
}

.page-about .hero-img {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--gb-radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .hero-decor-line {
  position: absolute;
  bottom: 20px;
  left: -4%;
  width: 112%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gb-gold) 20%, var(--gb-gold-light) 50%, var(--gb-gold) 80%, transparent);
  opacity: 0.4;
  transform: rotate(-1deg);
  pointer-events: none;
}

/* Company */
.page-about .company-intro {
  position: relative;
}

.page-about .company-grid {
  display: grid;
  gap: 32px;
  margin-top: 8px;
}

.page-about .company-copy {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--gb-text-muted);
}

.page-about .company-copy p + p {
  margin-top: 16px;
}

.page-about .text-link {
  display: inline-block;
  margin-top: 22px;
  color: var(--gb-link);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 212, 255, 0.4);
  padding-bottom: 2px;
}

.page-about .company-aside {
  position: relative;
  background: linear-gradient(var(--about-line-angle), var(--gb-card), var(--gb-bg-deep));
  border: 1px solid var(--gb-border);
  border-radius: var(--gb-radius-lg);
  padding: 30px;
  overflow: hidden;
  min-height: 280px;
}

.page-about .aside-coord {
  font-family: var(--gb-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  color: var(--gb-gold);
  text-transform: uppercase;
}

.page-about .aside-loc {
  font-family: var(--gb-font-title);
  font-size: 2.2rem;
  margin: 8px 0 16px;
  color: var(--gb-gold-light);
}

.page-about .aside-item {
  display: grid;
  gap: 2px;
  padding-block: 12px;
  border-bottom: 1px solid var(--gb-border);
}

.page-about .aside-item dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gb-text-muted);
}

.page-about .aside-item dd {
  margin: 0;
  font-size: 1rem;
  color: var(--gb-text);
}

.page-about .juzhou-silhouette {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 80%;
  height: auto;
  pointer-events: none;
  opacity: 0.5;
}

/* Timeline */
.page-about .timeline-section {
  position: relative;
}

.page-about .timeline-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 24px;
  color: var(--gb-text-muted);
}

.page-about .timeline-hint {
  font-family: var(--gb-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--gb-text-muted);
  text-transform: uppercase;
}

.page-about .timeline-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 8px 4px 20px;
  scroll-snap-type: x mandatory;
  scrollbar-color: var(--gb-gold) var(--gb-card);
  -webkit-overflow-scrolling: touch;
}

.page-about .timeline-item {
  flex: 0 0 260px;
  scroll-snap-align: start;
  background: linear-gradient(180deg, rgba(45, 27, 78, 0.9), rgba(26, 11, 46, 0.7));
  border: 1px solid var(--gb-border);
  border-radius: var(--gb-radius-md);
  padding: 28px 24px 24px;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .timeline-item:hover {
  transform: translateY(-4px);
  border-color: var(--gb-gold);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  top: 19px;
  left: 24px;
  right: 24px;
  height: 2px;
  background: var(--gb-gold-gradient);
  opacity: 0.55;
}

.page-about .timeline-item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 19px;
  left: 100%;
  width: 20px;
  height: 2px;
  background: var(--gb-gold);
}

.page-about .timeline-dot {
  position: absolute;
  top: 11px;
  left: 24px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gb-orange);
  border: 3px solid var(--gb-bg);
  box-shadow: 0 0 0 2px var(--gb-gold), 0 0 18px var(--gb-gold);
  z-index: 1;
}

.page-about .timeline-year {
  font-family: var(--gb-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--gb-gold-light);
}

.page-about .timeline-item h3 {
  font-family: var(--gb-font-title);
  font-size: 1.2rem;
  margin: 12px 0 8px;
  color: var(--gb-text);
}

.page-about .timeline-item p {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--gb-text-muted);
}

.page-about .timeline-media {
  margin: 40px auto 0;
  max-width: 840px;
}

.page-about .timeline-media img {
  width: 100%;
  height: auto;
  border-radius: var(--gb-radius-lg);
  box-shadow: var(--gb-shadow);
}

/* Stats */
.page-about .stats-section {
  background: linear-gradient(180deg, var(--gb-bg-deep) 0%, var(--gb-bg) 100%);
}

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

.page-about .stat-card {
  background: var(--gb-card);
  border: 1px solid var(--gb-border);
  border-radius: var(--gb-radius-md);
  padding: 28px 16px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.page-about .stat-card::after {
  content: "";
  position: absolute;
  inset: auto -20% -40% 30%;
  height: 80%;
  background: var(--about-card-glow);
  filter: blur(30px);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.page-about .stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--gb-gold);
  background: var(--gb-card-hover);
}

.page-about .stat-card:hover::after {
  opacity: 1;
}

.page-about .stat-num {
  display: block;
  font-family: var(--gb-font-title);
  font-size: 2.2rem;
  color: var(--gb-gold);
  line-height: 1.05;
}

.page-about .stat-label {
  display: block;
  margin-top: 10px;
  color: var(--gb-text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

/* Certifications */
.page-about .cert-list {
  display: grid;
  gap: 20px;
}

.page-about .cert-item {
  background: var(--gb-glass-bg);
  border: 1px solid var(--gb-glass-border);
  border-radius: var(--gb-radius-lg);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.page-about .cert-item:hover {
  border-color: var(--gb-gold);
  transform: translateY(-2px);
}

.page-about .cert-item::after {
  content: "";
  position: absolute;
  right: -34px;
  bottom: -34px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.16) 0%, transparent 70%);
}

.page-about .cert-index {
  font-family: var(--gb-font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--gb-gold);
}

.page-about .cert-item h3 {
  font-family: var(--gb-font-title);
  font-size: 1.15rem;
  margin: 12px 0 10px;
  color: var(--gb-text);
}

.page-about .cert-item p {
  color: var(--gb-text-muted);
  line-height: 1.7;
  font-size: 0.95rem;
}

.page-about .cert-note {
  margin-top: 24px;
  color: var(--gb-text-muted);
}

.page-about .cert-note a {
  color: var(--gb-link);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 212, 255, 0.4);
}

/* Culture */
.page-about .culture-grid {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about .culture-copy {
  color: var(--gb-text-muted);
  line-height: 1.8;
}

.page-about .culture-values {
  list-style: none;
  margin: 26px 0 30px;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .culture-values li {
  padding-left: 26px;
  position: relative;
}

.page-about .culture-values li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--gb-orange);
  font-family: var(--gb-font-mono);
  font-weight: bold;
}

.page-about .culture-values strong {
  color: var(--gb-gold-light);
  font-weight: 600;
}

.page-about .culture-media {
  margin: 0;
}

.page-about .culture-media img {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--gb-radius-lg);
  box-shadow: var(--gb-shadow);
}

/* CTA */
.page-about .cta-strip {
  position: relative;
  text-align: center;
  padding-top: calc(var(--gb-section-space) * 1.2);
  padding-bottom: calc(var(--gb-section-space) * 1.4);
}

.page-about .cta-strip::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 80%;
  max-width: 900px;
  height: 2px;
  background: var(--gb-gold-gradient);
  opacity: 0.5;
  transform: translateX(-50%);
}

.page-about .cta-inner {
  display: grid;
  justify-items: center;
  gap: 8px;
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 20px;
}

/* Scroll-driven enhancement */
@supports (animation-timeline: view()) {
  .page-about .timeline-media {
    animation: pa-reveal ease both;
    animation-timeline: view();
    animation-range: cover 0% cover 40%;
  }

  .page-about .culture-media {
    animation: pa-reveal ease both;
    animation-timeline: view();
    animation-range: cover 0% cover 40%;
  }

  .page-about .cert-item {
    animation: pa-fade ease both;
    animation-timeline: view();
    animation-range: cover 0% cover 35%;
  }
}

@keyframes pa-reveal {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes pa-fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (min-width: 768px) {
  .page-about .about-hero-grid {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 52px;
  }

  .page-about .company-grid {
    grid-template-columns: 1.3fr 0.7fr;
    gap: 48px;
  }

  .page-about .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

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

  .page-about .culture-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }

  .page-about .timeline-item {
    flex-basis: 300px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: calc(var(--gb-section-space) * 0.4);
  }

  .page-about .about-hero h1 {
    font-size: clamp(3.2rem, 6vw, 5.2rem);
  }

  .page-about .stat-card {
    padding: 36px 20px;
  }
}