.page-about {
  background: var(--paper);
  color: var(--ink);
  --page-shadow: 0 6px 20px rgba(30, 28, 25, 0.08);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .breadcrumb {
  font-size: 13px;
  margin-bottom: 32px;
  font-family: var(--font-sans);
}

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

.page-about .breadcrumb a:hover {
  text-decoration: underline;
}

.page-about .breadcrumb span[aria-current="page"] {
  color: var(--gray);
}

.page-about__hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 48px;
  border-bottom: 3px solid var(--blue);
  background: var(--paper);
}

.page-about__hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.3;
}

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

.page-about__hero-bg circle:nth-child(2) {
  animation: page-about-pulse 3s ease-in-out infinite;
}

@keyframes page-about-pulse {
  0%,
  100% {
    opacity: 0.6;
  }
  50% {
    opacity: 0.2;
  }
}

.page-about__hero-inner {
  position: relative;
  z-index: 1;
}

.page-about__hero-copy {
  max-width: 980px;
}

.page-about__hero-rule {
  display: block;
  width: 64px;
  height: 4px;
  background: var(--orange);
  margin: 0 0 18px;
}

.page-about__hero h1 {
  font-size: 1.75rem;
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 16px 0 18px;
  max-width: 14em;
}

.page-about__hero-lead {
  margin: 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.7;
}

.page-about__hero-stats {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-about__hero-stat {
  border-left: 3px solid var(--orange);
  padding-left: 14px;
  min-width: 128px;
}

.page-about__hero-stat dt {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 12px;
  color: var(--gray);
  margin-bottom: 2px;
}

.page-about__hero-stat dd {
  font-weight: 800;
  font-size: 20px;
  margin: 0;
  color: var(--ink);
  line-height: 1.2;
}

.page-about__exhibit {
  border-bottom: 1px solid var(--line);
}

.page-about__exhibit-inner {
  padding: 48px 0;
}

.page-about__exhibit-side {
  border-left: 3px solid var(--blue);
  padding-left: 16px;
  margin-bottom: 28px;
}

.page-about__exhibit-side--light {
  border-left-color: var(--orange);
}

.page-about__exhibit-num {
  display: inline-block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14px;
  color: var(--blue);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.page-about__exhibit-title {
  font-size: 22px;
  line-height: 1.25;
  margin: 0 0 8px;
}

.page-about__exhibit-tag {
  font-size: 12px;
  color: var(--gray);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0;
}

.page-about__exhibit-main {
  min-width: 0;
}

.page-about__exhibit-main p {
  line-height: 1.7;
}

.page-about__who-lead {
  font-size: 17px;
  line-height: 1.75;
  margin-top: 0;
  max-width: 44em;
}

.page-about__who-cols {
  display: block;
  margin-top: 20px;
}

.page-about__who-cols > div + div {
  margin-top: 16px;
}

.page-about__who-cols p {
  font-size: 15px;
  margin: 0 0 12px;
}

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

.page-about__metric {
  background: var(--blue-soft);
  border-top: 3px solid var(--blue);
  padding: 16px;
  flex: 1 1 120px;
}

.page-about__metric strong {
  display: block;
  font-size: 22px;
  line-height: 1.2;
  color: var(--ink);
}

.page-about__metric span {
  display: block;
  font-size: 13px;
  color: var(--gray);
  margin-top: 4px;
}

.page-about__exhibit--timeline {
  background-image: linear-gradient(to right, rgba(176, 208, 255, 0.22) 1px, transparent 1px);
  background-size: 32px 32px;
}

.page-about__timeline-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-about__timeline {
  position: relative;
  flex: 1 1 auto;
  padding-left: 28px;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}

.page-about__tl-item {
  position: relative;
  margin-bottom: 32px;
  scroll-margin-top: 28px;
}

.page-about__tl-item:last-child {
  margin-bottom: 0;
}

.page-about__tl-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--blue);
  border: 2px solid var(--paper);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--blue);
  box-sizing: content-box;
}

.page-about__tl-head {
  position: relative;
}

.page-about__tl-open {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
}

.page-about__tl-year {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 14px;
  color: var(--blue);
  font-weight: 600;
  white-space: nowrap;
}

.page-about__tl-title {
  font-weight: 800;
  font-size: 16px;
  line-height: 1.3;
}

.page-about__tl-more-sign {
  color: var(--orange);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
}

.page-about__tl-summary {
  margin-top: 8px;
  font-size: 15px;
  margin-bottom: 0;
}

.page-about__tl-expand {
  display: none;
  margin-top: 8px;
  padding-left: 12px;
  border-left: 2px solid var(--orange);
}

.page-about__tl-expand p {
  font-size: 14px;
  color: var(--gray);
  margin: 0;
}

.page-about__tl-item:target .page-about__tl-expand {
  display: block;
}

.page-about__tl-item:target .page-about__tl-dot {
  background: var(--orange);
  box-shadow: 0 0 0 1px var(--orange);
}

.page-about__tl-item:target .page-about__tl-year {
  color: var(--orange);
}

.page-about__timeline-figure {
  margin: 0;
  flex: 0 0 auto;
}

.page-about__timeline-figure img {
  width: 100%;
  max-width: 300px;
  max-height: 600px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about__timeline-figure figcaption {
  font-size: 12px;
  color: var(--gray);
  font-family: var(--font-serif);
  font-style: italic;
  margin-top: 8px;
}

.page-about__timeline-note {
  display: inline-block;
  font-size: 13px;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray);
  margin-top: 16px;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 2px;
}

.page-about__exhibit--team {
  background: rgba(176, 208, 255, 0.28);
}

.page-about__team-lead {
  max-width: 46em;
  font-size: 16px;
  margin-top: 0;
}

.page-about__team-layout {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}

.page-about__team-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about__team-card {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 22px 18px 20px;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.page-about__team-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--page-shadow);
  border-color: var(--blue-soft);
}

.page-about__team-index {
  position: absolute;
  top: 14px;
  right: 16px;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--blue-soft);
  font-size: 22px;
  line-height: 1;
}

.page-about__team-icon {
  width: 56px;
  height: 56px;
  color: var(--blue);
  margin-bottom: 14px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.page-about__team-card:hover .page-about__team-icon {
  color: var(--orange);
  transform: rotate(-4deg);
}

.page-about__team-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.page-about__team-card h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

.page-about__team-card p {
  font-size: 14px;
  line-height: 1.6;
  margin: 0;
}

.page-about__team-figure {
  margin: 0;
  align-self: start;
}

.page-about__team-figure img {
  width: 100%;
  max-width: 360px;
  max-height: 240px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about__team-figure figcaption {
  font-size: 12px;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray);
  margin-top: 8px;
}

.page-about__cred-layout {
  display: grid;
  gap: 28px;
}

.page-about__cred-badge-row {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.2s ease;
}

.page-about__cred-badge-row:hover {
  background: rgba(176, 208, 255, 0.15);
}

.page-about__cred-badge {
  width: 64px;
  height: 64px;
  color: var(--blue);
  flex-shrink: 0;
  transition: transform 0.4s ease;
}

.page-about__cred-badge-row:hover .page-about__cred-badge {
  transform: rotate(18deg);
}

.page-about__cred-badge svg {
  width: 100%;
  height: 100%;
  display: block;
}

.page-about__cred-year {
  display: inline-block;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--orange);
  font-size: 14px;
  margin-bottom: 4px;
}

.page-about__cred-text h3 {
  font-size: 18px;
  margin: 0 0 6px;
}

.page-about__cred-text p {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.6;
  margin: 0;
}

.page-about__cred-eco {
  margin-top: 24px;
  padding: 20px;
  border: 1px solid var(--orange);
  background: var(--orange-soft);
}

.page-about__cred-eco h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

.page-about__cred-eco p {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

.page-about__cred-figure {
  margin: 0;
  align-self: start;
}

.page-about__cred-figure img {
  width: 100%;
  max-width: 480px;
  max-height: 320px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about__cred-figure figcaption {
  font-size: 12px;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gray);
  margin-top: 8px;
}

.page-about__exhibit--promise {
  background: var(--blue);
  color: #ffffff;
  border-bottom: 0;
}

.page-about__exhibit--promise .page-about__exhibit-num {
  color: var(--orange-soft);
}

.page-about__exhibit--promise .page-about__exhibit-title {
  color: #ffffff;
}

.page-about__exhibit--promise .page-about__exhibit-tag {
  color: var(--blue-soft);
}

.page-about__exhibit--promise .page-about__exhibit-side {
  border-left-color: var(--orange);
}

.page-about__promise-lead {
  font-size: 17px;
  line-height: 1.7;
  max-width: 42em;
  margin-top: 0;
  color: #ffffff;
}

.page-about__promise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
}

.page-about__promise-item {
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 16px 14px;
}

.page-about__promise-item span {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  color: var(--blue-soft);
  margin-bottom: 8px;
}

.page-about__promise-item strong {
  font-size: 15px;
  line-height: 1.45;
  color: #ffffff;
}

.page-about__promise-extra {
  margin-top: 20px;
  max-width: 48em;
  font-size: 14px;
  color: var(--blue-soft);
}

.page-about__promise-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.page-about__exhibit--promise .btn-primary {
  background: #ffffff;
  color: var(--blue);
  border-color: #ffffff;
}

.page-about__exhibit--promise .btn-secondary {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.7);
}

.page-about__promise-note {
  margin-top: 28px;
  font-size: 13px;
  color: var(--blue-soft);
}

.page-about__promise-note a {
  color: #ffffff;
}

@media (min-width: 640px) {
  .page-about__team-cards {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (min-width: 768px) {
  .page-about__hero {
    padding: 64px 0 72px;
  }

  .page-about__hero h1 {
    font-size: 2.1rem;
  }

  .page-about__hero-stats {
    gap: 32px;
  }

  .page-about__exhibit-inner {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 2.15fr);
    gap: 48px;
    padding: 72px 0;
  }

  .page-about__exhibit-side {
    border-left: 0;
    border-right: 1px solid var(--line);
    padding-left: 0;
    padding-right: 24px;
    margin-bottom: 0;
  }

  .page-about__exhibit-side--light {
    border-left: 0;
  }

  .page-about__exhibit-title {
    font-size: 26px;
  }

  .page-about__who-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .page-about__who-cols > div + div {
    margin-top: 0;
  }

  .page-about__timeline-layout {
    flex-direction: row;
    gap: 40px;
    align-items: flex-start;
  }

  .page-about__timeline-figure {
    flex: 0 0 220px;
  }

  .page-about__timeline-figure img {
    max-width: 300px;
  }

  .page-about__team-layout {
    grid-template-columns: 1.6fr 0.9fr;
    align-items: start;
  }

  .page-about__cred-layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about__hero-bg {
    opacity: 0.5;
  }

  .page-about__hero h1 {
    font-size: 2.4rem;
    max-width: 13em;
  }

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

  .page-about__exhibit-inner {
    gap: 72px;
  }

  .page-about__promise-lead {
    font-size: 18px;
  }
}