.page-about {
  --about-paper: #fbfcff;
}

.page-about__hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 72px;
  background:
    linear-gradient(135deg, rgba(0, 200, 224, 0.05) 1px, transparent 1px),
    linear-gradient(45deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(180deg, #0B2447 0%, #0F3160 100%);
  background-size: 32px 32px, 48px 48px, 100% 100%;
  color: #fff;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 36px), 0 100%);
}

.page-about__hero-art {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 420px;
  opacity: 0.7;
  pointer-events: none;
}

.page-about__hero-art svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .breadcrumb {
  position: relative;
  z-index: 1;
  margin-bottom: 28px;
}

.page-about .breadcrumb__link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration-color: rgba(255, 255, 255, 0.3);
}

.page-about .breadcrumb__link:hover {
  color: #00C8E0;
}

.page-about .breadcrumb__item:last-child {
  color: #00C8E0;
}

.page-about__hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}

.page-about__hero-copy {
  max-width: 640px;
}

.page-about__hero-copy h1 {
  margin: 12px 0 8px;
  font-family: var(--font-heading);
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.page-about__hero-lede {
  margin: 0 0 24px;
  font-size: 18px;
  font-weight: 500;
  color: #00C8E0;
  letter-spacing: 0.04em;
}

.page-about__hero-note {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.82);
}

.page-about__hero-note:first-of-type {
  padding-left: 14px;
  border-left: 2px solid #FF6B35;
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .btn--ghost {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}

.page-about .btn--ghost:hover {
  border-color: #00C8E0;
}

.page-about__hero-figure {
  position: relative;
  align-self: end;
  max-width: 560px;
  margin: 0;
  padding: 12px 12px 16px;
  background: #fff;
  border-radius: 4px;
  box-shadow: var(--shadow-float);
}

.page-about__hero-figure::before,
.page-about__hero-figure::after {
  content: "";
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: #00C8E0;
  border-style: solid;
}

.page-about__hero-figure::before {
  top: 6px;
  left: 6px;
  border-width: 2px 0 0 2px;
}

.page-about__hero-figure::after {
  right: 6px;
  bottom: 6px;
  border-width: 0 2px 2px 0;
}

.page-about__hero-img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about__figure-cap {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 4px 4px;
  font-family: var(--font-number);
  font-size: 12px;
  color: var(--color-ink);
}

.page-about__cap-index {
  color: #FF6B35;
}

.page-about__timeline {
  padding: 68px 0 72px;
  background: linear-gradient(180deg, var(--color-snow) 0%, #fff 100%);
}

.page-about .layout-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about__aside-card {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-top: 3px solid #00C8E0;
  border-radius: var(--radius-card);
}

.page-about__aside-card h2 {
  margin: 12px 0;
  font-family: var(--font-heading);
  font-size: 26px;
  color: var(--color-deep-blue);
}

.page-about__aside-lead {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-graphite);
}

.page-about .filter-bar {
  margin-top: 8px;
}

.page-about__aside-link {
  display: inline-block;
  margin-top: 18px;
  font-size: 14px;
  color: var(--color-deep-blue);
  text-decoration-color: #00C8E0;
  text-underline-offset: 4px;
}

.page-about__aside-link:hover {
  color: #FF6B35;
}

.page-about__timeline-main {
  position: relative;
}

.page-about__timeline-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about__timeline-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 20px 8px 24px;
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  transition: transform var(--transition), background var(--transition);
}

.page-about__timeline-item:last-child {
  border-bottom: none;
}

.page-about__timeline-item:hover,
.page-about__timeline-item:focus-within {
  background: rgba(0, 200, 224, 0.07);
  transform: translateX(6px);
}

.page-about__tl-num {
  font-family: var(--font-number);
  font-weight: 700;
  font-size: 24px;
  line-height: 1;
  color: #00C8E0;
  letter-spacing: -1px;
}

.page-about__tl-body h3 {
  margin: 8px 0;
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--color-ink);
}

.page-about__tl-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-graphite);
}

.page-about__tl-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.page-about__tl-index {
  padding: 3px 8px;
  font-family: var(--font-number);
  font-size: 12px;
  color: var(--color-deep-blue);
  background: var(--color-snow);
  border: 1px solid var(--color-border);
  border-radius: 20px;
}

.page-about__mission {
  position: relative;
  padding: 72px 0 80px;
  background:
    linear-gradient(135deg, rgba(0, 200, 224, 0.06) 1px, transparent 1px),
    linear-gradient(180deg, #0B2447 0%, #0F3160 100%);
  background-size: 40px 40px, 100% 100%;
  color: #fff;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), 0 100%);
}

.page-about__mission .section-head__index,
.page-about__mission .section-head__title,
.page-about__mission .section-head__desc {
  color: #fff;
}

.page-about__mission .section-head__title::before {
  background: #FF6B35;
}

.page-about__mission-lead {
  max-width: 760px;
  margin: 0 0 36px;
  font-size: 15px;
  line-height: 2;
  color: rgba(255, 255, 255, 0.82);
}

.page-about__mission-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 36px;
}

.page-about__mission-stats .data-card {
  padding: 18px 16px;
  background: #fff;
  border-radius: 8px;
  box-shadow: var(--shadow-card);
}

.page-about__mission-stats .data-card__num {
  font-family: var(--font-number);
  font-size: 30px;
  line-height: 1.2;
}

.page-about__mission-stats .data-card__num--cyan {
  color: #00C8E0;
}

.page-about__mission-stats .data-card__num--orange {
  color: #FF6B35;
}

.page-about__mission-stats .data-card__label {
  margin-top: 6px;
  font-size: 13px;
  color: var(--color-graphite);
}

.page-about__mission-grid {
  gap: 14px;
}

.page-about__archive-card .archive-card__side {
  width: 6px;
  background: #00C8E0;
}

.page-about__archive-card .archive-card__index {
  margin-bottom: 8px;
  font-family: var(--font-number);
  font-size: 12px;
  color: #FF6B35;
  letter-spacing: 0.08em;
}

.page-about__archive-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 17px;
  color: var(--color-ink);
}

.page-about__archive-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-graphite);
}

.page-about__team {
  padding: 80px 0;
  background: #fff;
}

.page-about__team-grid {
  display: grid;
  gap: 32px;
  align-items: center;
  margin-bottom: 48px;
}

.page-about__team-figure {
  margin: 0;
  padding: 10px 10px 14px;
  background: var(--color-snow);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.page-about__team-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about__team-figure figcaption,
.page-about__ecology-figure figcaption {
  padding: 12px 4px 2px;
  font-family: var(--font-number);
  font-size: 13px;
  color: var(--color-graphite);
}

.page-about__team-copy p {
  margin-bottom: 16px;
  font-size: 15px;
  line-height: 1.95;
  color: var(--color-ink);
}

.page-about__team-actions {
  margin-top: 20px;
}

.page-about .btn--ghost {
  color: var(--color-deep-blue);
  border-color: rgba(11, 36, 71, 0.3);
}

.page-about .btn--ghost:hover {
  border-color: #00C8E0;
  color: #00C8E0;
}

.page-about__team-cards {
  gap: 16px;
  margin-bottom: 44px;
}

.page-about__team-card {
  padding: 22px 20px;
  background: var(--color-snow);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-deep-blue);
  border-radius: var(--radius-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.page-about__team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-float);
}

.page-about__team-card .index-label {
  color: #00C8E0;
}

.page-about__team-card h3 {
  margin: 10px 0;
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--color-ink);
}

.page-about__team-card p:not(.index-label) {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-graphite);
}

.page-about__ecology-figure {
  margin: 0;
  padding: 12px;
  background: var(--color-snow);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-about__ecology-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.page-about__contact-cta {
  padding: 48px 0 72px;
  background: var(--color-snow);
}

.page-about__cta-card {
  position: relative;
  display: grid;
  gap: 24px;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-about__cta-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #00C8E0, #FF6B35);
}

.page-about__cta-card h2 {
  margin: 12px 0 10px;
  font-family: var(--font-heading);
  font-size: 24px;
  color: var(--color-ink);
}

.page-about__cta-card p {
  margin: 0 0 6px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--color-graphite);
}

.page-about__cta-action {
  align-self: center;
  justify-self: start;
}

@media (min-width: 720px) {
  .page-about__hero {
    padding: 56px 0 88px;
  }

  .page-about__hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.9fr);
    gap: 48px;
    align-items: end;
  }

  .page-about__hero-figure {
    justify-self: end;
  }

  .page-about .layout-detail {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 40px;
  }

  .page-about .layout-detail__aside {
    position: sticky;
    top: 108px;
    align-self: start;
  }

  .page-about__timeline-item {
    grid-template-columns: 112px 1fr;
  }

  .page-about__tl-num {
    font-size: 32px;
  }

  .page-about__mission-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about__mission-lead {
    font-size: 17px;
  }

  .page-about__team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
  }

  .page-about__cta-card {
    grid-template-columns: 1fr auto;
    padding: 40px 48px;
  }

  .page-about__cta-action {
    justify-self: end;
  }
}

@media (min-width: 1024px) {
  .page-about__timeline {
    padding: 80px 0;
  }

  .page-about__team-cards {
    gap: 28px;
  }

  .page-about__mission-grid {
    gap: 20px;
  }
}