.page-about {
  --about-grid-line: rgba(92, 118, 145, 0.22);
  --about-grid-line-strong: rgba(92, 118, 145, 0.35);
  --about-panel-bg: rgba(8, 19, 34, 0.9);
  --about-card-bg: rgba(11, 24, 38, 0.72);
  --about-gold-glow: rgba(212, 175, 55, 0.22);
  --about-shadow: 0 18px 40px rgba(2, 8, 18, 0.45);
  background:
    linear-gradient(rgba(20, 35, 54, 0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 35, 54, 0.4) 1px, transparent 1px),
    radial-gradient(circle at 80% 10%, rgba(212, 175, 55, 0.08), transparent 320px),
    var(--color-bg-deep);
  background-size: 32px 32px, 32px 32px, auto, auto;
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.75;
  overflow: hidden;
}

.page-about .container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 56px 24px 88px;
}

.page-about .text-secondary {
  color: var(--color-text-secondary);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.page-about .breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}

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

.page-about .breadcrumb_sep {
  color: var(--color-gold);
}

.page-about .about-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding: 48px 0 64px;
  border-bottom: 1px solid var(--about-grid-line-strong);
}

.page-about .about-hero__eyebrow {
  color: var(--color-gold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 13px;
  margin-bottom: 16px;
  font-family: var(--font-data);
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.12;
  margin: 0 0 16px;
  letter-spacing: 0.02em;
}

.page-about .about-hero__lead {
  font-size: 18px;
  max-width: 34em;
}

.page-about .about-hero__copy > p:not(.about-hero__lead) {
  color: var(--color-text-secondary);
  max-width: 38em;
  margin-top: 8px;
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-grid-line-strong);
  box-shadow: var(--about-shadow);
}

.page-about .img-caption {
  color: var(--color-text-secondary);
  font-size: 13px;
  text-align: center;
  margin-top: 10px;
  letter-spacing: 0.03em;
}

.page-about .about-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--about-grid-line-strong);
  scroll-margin-top: 24px;
}

.page-about .about-section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}

.page-about .about-section__head h2 {
  font-family: var(--font-head);
  font-size: clamp(24px, 3.4vw, 34px);
  margin: 0;
  position: relative;
}

.page-about .about-section__head h2::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-gold);
  margin-right: 14px;
  transform: rotate(45deg);
  border-radius: 1px;
}

.page-about .about-section__head .text-secondary {
  margin: 0;
  font-size: 15px;
}

.page-about .grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

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

.page-about .about-prose p {
  color: var(--color-text-secondary);
  margin: 0 0 1em;
}

.page-about .about-prose p:first-child {
  color: var(--color-text);
}

.page-about .about-file {
  background: var(--about-panel-bg);
  border: 1px solid var(--about-grid-line-strong);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  position: relative;
  box-shadow: var(--about-shadow);
}

.page-about .about-file::before {
  content: '';
  position: absolute;
  inset: 12px;
  border: 1px dashed var(--about-grid-line);
  border-radius: 12px;
  pointer-events: none;
}

.page-about .about-file__label {
  font-family: var(--font-data);
  color: var(--color-gold);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-about .about-file__number {
  font-family: var(--font-data);
  font-size: 56px;
  line-height: 1;
  color: var(--color-text);
  margin-top: 16px;
}

.page-about .about-file__unit {
  font-family: var(--font-data);
  color: var(--color-gold);
  font-size: 18px;
  margin-left: 6px;
}

.page-about .about-file__note {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin: 10px 0 20px;
}

.page-about .about-file .btn {
  position: relative;
  z-index: 1;
}

.page-about .about-timeline {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
}

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

.page-about .about-timeline__list::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold), var(--about-grid-line));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 36px 40px;
}

.page-about .about-timeline__item::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--color-bg-deep);
  border: 2px solid var(--color-gold);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.14);
}

.page-about .about-timeline__year {
  font-family: var(--font-data);
  font-size: 15px;
  color: var(--color-gold);
  letter-spacing: 0.08em;
}

.page-about .about-timeline__item h3 {
  font-family: var(--font-head);
  font-size: 20px;
  margin: 6px 0 6px;
}

.page-about .about-timeline__item p {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin: 0;
  max-width: 32em;
}

.page-about .about-timeline__figure {
  margin: 0;
}

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-grid-line-strong);
}

.page-about .about-card-grid {
  margin-top: 8px;
}

.page-about .about-card {
  background: var(--about-card-bg);
  border: 1px solid var(--about-grid-line);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--about-shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color var(--transition-speed) ease, transform var(--transition-speed) ease;
}

.page-about .about-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
}

.page-about .about-card__tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--color-gold);
  background: var(--about-gold-glow);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  align-self: flex-start;
  letter-spacing: 0.06em;
}

.page-about .about-card p {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin: 0;
}

.page-about .about-block {
  background: var(--about-panel-bg);
  border: 1px solid var(--about-grid-line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.page-about .about-block h3 {
  font-family: var(--font-head);
  font-size: 18px;
  margin: 0 0 10px;
  color: var(--color-gold);
}

.page-about .about-block p {
  color: var(--color-text-secondary);
  font-size: 15px;
  margin: 0;
}

.page-about .about-henan__figure {
  margin: 0;
}

.page-about .about-henan__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-grid-line-strong);
}

.page-about .about-cta {
  padding: 56px 0 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  text-align: center;
}

.page-about .about-cta__text {
  font-family: var(--font-head);
  font-size: 24px;
  margin: 0;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 13px 22px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  transition: background var(--transition-speed) ease, border-color var(--transition-speed) ease, transform var(--transition-speed) ease;
}

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

.page-about .btn-gold {
  background: var(--color-gold);
  color: #101A24;
  border-color: transparent;
  font-weight: 700;
}

.page-about .btn-gold:hover {
  background: var(--color-gold-light);
  color: #101A24;
}

.page-about .btn-warm {
  background: var(--color-accent);
  color: #fff;
  border-color: transparent;
}

.page-about .btn-warm:hover {
  color: #fff;
  opacity: 0.92;
}

.page-about .btn-sm {
  padding: 8px 14px;
  font-size: 14px;
  border-radius: var(--radius-pill);
}

@media (max-width: 900px) {
  .page-about .about-hero,
  .page-about .about-timeline,
  .page-about .grid-2 {
    grid-template-columns: 1fr;
  }

  .page-about .grid-3 {
    grid-template-columns: 1fr;
  }

  .page-about .about-section__head {
    flex-direction: column;
    gap: 8px;
  }

  .page-about .container {
    padding: 40px 16px 64px;
  }

  .page-about .about-hero {
    padding: 32px 0 48px;
  }
}