.page-about {
  position: relative;
  background: linear-gradient(180deg, var(--color-dark) 0%, var(--color-bg) 100%);
  color: var(--color-text);
  font-family: var(--font-body);
  overflow: hidden;
}

.page-about .container {
  max-width: var(--container-main);
  margin: 0 auto;
  padding-left: var(--page-gutter);
  padding-right: var(--page-gutter);
}

.page-about__intro {
  padding: calc(var(--header-bar-height) + 3rem) 0 0;
}

.page-about .breadcrumb {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

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

.page-about__hero {
  max-width: 70rem;
}

.page-about__eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin-bottom: 1rem;
}

.page-about__hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.1;
  margin: 0 0 1.25rem;
  color: var(--color-white);
}

.page-about__lede {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--color-text-secondary);
  max-width: 45rem;
  border-left: 4px solid var(--color-gold);
  padding-left: 1.5rem;
}

.page-about__toc {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: 2.5rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.page-about__toc a {
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  transition: color var(--transition-base);
}

.page-about__toc a:hover {
  color: var(--color-gold);
}

.page-about__section {
  position: relative;
  padding: 5rem 0;
}

.page-about__section--origin,
.page-about__section--team {
  background: rgba(255, 255, 255, 0.02);
}

.page-about__section--collection {
  background:
    linear-gradient(135deg, rgba(0, 0, 0, 0.2) 25%, transparent 25%),
    var(--color-dark);
  clip-path: polygon(0 0, 100% 4rem, 100% 100%, 0 calc(100% - 4rem));
}

.page-about__section--qinghai {
  background: linear-gradient(180deg, var(--color-bg) 0%, rgba(0, 0, 0, 0.2) 100%);
}

.page-about__grid {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 2rem;
  align-items: start;
}

.page-about__grid--reverse {
  grid-template-columns: 1fr 1fr 1fr;
}

.page-about__number {
  font-family: var(--font-mono);
  font-size: 4rem;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-gold);
  user-select: none;
}

.page-about__content h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
  margin: 0 0 1.5rem;
  color: var(--color-white);
}

.page-about__content p {
  font-size: 1.05rem;
  line-height: 1.8;
  margin: 0 0 1.25rem;
  color: var(--color-text);
}

.page-about__note {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border-radius: 0.75rem;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-gold);
  box-shadow: var(--shadow-md);
}

.page-about__note p {
  margin: 0;
}

.page-about__media {
  margin: 0;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--color-dark);
}

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

.page-about__media figcaption {
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  background: rgba(0, 0, 0, 0.3);
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-family: var(--font-body);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
}

.page-about .btn--gold {
  background: var(--color-gold);
  color: var(--color-dark);
}

.page-about .btn--gold:hover {
  background: var(--color-gold-dark);
}

.page-about .btn--outline {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.page-about .btn--outline:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.page-about .btn--accent {
  background: var(--color-accent);
  color: var(--color-white);
}

.page-about .btn--accent:hover {
  background: var(--color-accent-dark);
}

.page-about__section--milestones {
  background: var(--color-dark);
  color: var(--color-white);
}

.page-about__section--milestones .container {
  max-width: 60rem;
}

.page-about__section--milestones .page-about__number {
  -webkit-text-stroke-color: var(--color-accent);
}

.page-about__section--milestones h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
  margin: 0 0 3rem;
}

.page-about__timeline {
  position: relative;
  padding-left: 2rem;
  border-left: 2px solid rgba(255, 255, 255, 0.15);
}

.page-about__milestone {
  position: relative;
  padding: 0 0 2.5rem 1rem;
}

.page-about__milestone::before {
  content: "";
  position: absolute;
  left: -2.4rem;
  top: 0.3rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.15);
}

.page-about__milestone h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0 0 0.5rem;
}

.page-about__milestone p {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

.page-about__footer {
  padding: 4rem 0 2rem;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.3));
}

.page-about__cta {
  text-align: center;
  padding: 3rem 0;
}

.page-about__cta h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 3rem);
  color: var(--color-white);
  margin: 0 0 1rem;
}

.page-about__cta > p {
  color: var(--color-text-secondary);
  max-width: 40rem;
  margin: 0 auto 2rem;
}

.page-about__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.page-about__snow {
  display: block;
  width: 100%;
  height: 12rem;
  object-fit: cover;
  opacity: 0.5;
  margin-top: 4rem;
}

@media (max-width: 900px) {
  .page-about__grid,
  .page-about__grid--reverse {
    grid-template-columns: 1fr;
  }

  .page-about__number {
    font-size: 3rem;
  }

  .page-about__media {
    margin-top: 1rem;
  }

  .page-about__note {
    grid-row: auto;
  }
}