.page-about {
  --about-card-pad: 1.5rem;
  background: var(--c-cream);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  margin: 0.875rem 1.25rem 0;
}

.page-about .about-hero {
  position: relative;
  background: var(--gradient-blue);
  color: var(--c-white);
  padding: 3rem 1.25rem 3.5rem;
  border-bottom: 6px solid var(--c-gold-dark);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(242, 209, 107, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 209, 107, 0.06) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 8px;
  height: 100%;
  background: var(--c-cinnabar);
}

.page-about .eyebrow {
  position: relative;
  margin: 0 0 1rem;
  font-family: var(--f-mono);
  font-size: 0.875rem;
  letter-spacing: 0.14em;
  color: var(--c-gold-light);
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  position: relative;
  margin: 0 0 1.25rem;
  font-family: var(--f-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.3;
  color: var(--c-white);
}

.page-about .about-lead {
  position: relative;
  margin: 0;
  max-width: 58rem;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(247, 243, 232, 0.88);
}

.page-about .about-origin {
  padding: 3.5rem 1.25rem 2.5rem;
  background: var(--c-cream);
}

.page-about .section-index {
  margin: 0 0 0.75rem;
  font-family: var(--f-mono);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-gold-dark);
}

.page-about .section-index-light {
  color: var(--c-gold-light);
}

.page-about .origin-copy h2,
.page-about .idea-head h2,
.page-about .timeline-head h2,
.page-about .team-head h2,
.page-about .commitment-head h2 {
  margin: 0 0 1rem;
  font-family: var(--f-heading);
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  line-height: 1.35;
  color: var(--c-deep-blue);
}

.page-about .idea-head h2,
.page-about .commitment-head h2 {
  color: var(--c-white);
}

.page-about .origin-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.page-about .origin-copy p {
  margin: 0 0 1rem;
  line-height: 1.85;
  color: var(--c-ink);
}

.page-about .origin-stat {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.75rem 1rem;
  border-left: var(--border-w) solid var(--c-gold-dark);
  background: var(--c-tag);
  font-weight: 600;
  color: var(--c-deep-blue);
}

.page-about .origin-figure {
  margin: 0;
  border: var(--border-w) solid var(--c-deep-blue);
  box-shadow: var(--shadow-hard);
  background: var(--c-white);
}

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

.page-about .origin-figure figcaption {
  padding: 0.75rem 1rem;
  font-family: var(--f-mono);
  font-size: 0.8125rem;
  color: var(--c-mid-blue);
  border-top: 1px solid var(--c-line);
}

.page-about .about-idea {
  padding: 3.5rem 1.25rem;
  background: var(--c-deep-blue);
  color: var(--c-white);
}

.page-about .idea-intro {
  margin: 0 0 2rem;
  font-size: 1.0625rem;
  color: rgba(247, 243, 232, 0.85);
}

.page-about .idea-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-about .idea-item {
  padding: var(--about-card-pad);
  background: rgba(10, 35, 66, 0.72);
  border: 1px solid rgba(242, 209, 107, 0.35);
  border-top: var(--border-w) solid var(--c-gold-dark);
  transition: border-color var(--ease), background var(--ease);
}

.page-about .idea-item:hover {
  border-top-color: var(--c-gold-light);
  background: rgba(18, 58, 110, 0.6);
}

.page-about .idea-num {
  margin: 0 0 0.75rem;
  font-family: var(--f-heading);
  font-size: 2rem;
  color: var(--c-gold-light);
}

.page-about .idea-item h3 {
  margin: 0 0 0.75rem;
  font-family: var(--f-heading);
  font-size: 1.25rem;
  color: var(--c-white);
}

.page-about .idea-item p {
  margin: 0;
  line-height: 1.8;
  font-size: 0.9375rem;
  color: rgba(247, 243, 232, 0.82);
}

.page-about .idea-item a {
  color: var(--c-gold-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-timeline {
  padding: 3.5rem 1.25rem;
  background: var(--c-cream);
}

.page-about .timeline-intro {
  margin: 0 0 2rem;
  max-width: 50rem;
  line-height: 1.85;
  color: var(--c-ink);
}

.page-about .timeline-intro a {
  color: var(--c-cinnabar);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .timeline-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .year-nav {
  display: flex;
  overflow-x: auto;
  gap: 0.75rem;
  padding: 0.5rem 0.25rem 0.75rem;
  scrollbar-width: thin;
  scrollbar-color: var(--c-gold-dark) var(--c-tag);
}

.page-about .year-nav-title {
  display: none;
}

.page-about .year-nav-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
  font-family: var(--f-mono);
  font-size: 0.875rem;
  color: var(--c-deep-blue);
  background: var(--c-white);
  border: 2px solid var(--c-deep-blue);
  box-shadow: var(--shadow-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--ease), color var(--ease);
}

.page-about .year-nav-link span {
  font-weight: 700;
}

.page-about .year-nav-link:hover,
.page-about .year-nav-link:focus-visible {
  background: var(--c-gold-light);
}

.page-about .timeline-content {
  position: relative;
  min-width: 0;
}

.page-about .timeline-content::before {
  content: "";
  position: absolute;
  top: 4rem;
  bottom: 1rem;
  left: 24px;
  width: 2px;
  background: var(--c-gold-dark);
}

.page-about .timeline-figure {
  margin: 0 0 2.75rem;
  border: var(--border-w) solid var(--c-deep-blue);
  box-shadow: var(--shadow-hard);
  background: var(--c-deep-blue);
}

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

.page-about .timeline-node {
  position: relative;
  padding-left: 60px;
  margin-bottom: 2.5rem;
  scroll-margin-top: 2rem;
}

.page-about .timeline-node::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 20px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--gradient-gold);
  border: 3px solid var(--c-deep-blue);
  box-shadow: 0 0 0 4px rgba(184, 134, 11, 0.22);
}

.page-about .timeline-node:target .node-body {
  outline: 3px solid var(--c-gold-dark);
  outline-offset: 3px;
}

.page-about .node-year {
  display: inline-block;
  margin: 0 0 0.625rem;
  padding: 0.25rem 0.75rem;
  font-family: var(--f-mono);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--c-white);
  background: var(--c-deep-blue);
  border: 2px solid var(--c-gold-dark);
}

.page-about .node-body {
  padding: var(--about-card-pad);
  background: var(--c-white);
  border: 2px solid var(--c-deep-blue);
  box-shadow: var(--shadow-hard);
}

.page-about .node-body h3 {
  margin: 0 0 0.75rem;
  font-family: var(--f-heading);
  font-size: 1.25rem;
  color: var(--c-deep-blue);
}

.page-about .node-body > p {
  margin: 0 0 0.875rem;
  line-height: 1.8;
  color: var(--c-ink);
  font-size: 0.9375rem;
}

.page-about .node-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--c-line);
  font-family: var(--f-mono);
  font-size: 0.8125rem;
  color: var(--c-deep-blue);
}

.page-about .node-meta a {
  color: var(--c-cinnabar);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .expandable-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin: 1rem 0 0;
  padding: 0.625rem 0.875rem;
  font-family: var(--f-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-deep-blue);
  background: var(--c-tag);
  border: 2px solid var(--c-deep-blue);
  cursor: pointer;
  text-align: left;
  transition: background var(--ease);
}

.page-about .expandable-header:hover,
.page-about .expandable-header:focus-visible {
  background: var(--c-gold-light);
}

.page-about .expand-icon {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 1.125rem;
  line-height: 1;
  transition: transform var(--ease);
}

.page-about [data-expanded="true"] .expand-icon {
  transform: rotate(45deg);
}

.page-about .expandable-body {
  padding-top: 0.75rem;
}

.page-about .expandable-content {
  padding: 0.875rem;
  background: var(--c-cream);
  border: 1px dashed var(--c-gold-dark);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-ink);
}

.page-about .fix-list {
  margin: 0;
  padding-left: 1.25rem;
}

.page-about .fix-list li {
  margin-bottom: 0.375rem;
}

.page-about .fix-list li:last-child {
  margin-bottom: 0;
}

.page-about .about-team {
  padding: 3.5rem 1.25rem;
  background: var(--c-white);
}

.page-about .team-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .team-figure {
  margin: 0;
  border: var(--border-w) solid var(--c-deep-blue);
  box-shadow: var(--shadow-hard);
  background: var(--c-cream);
}

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

.page-about .team-summary {
  margin: 0 0 1.25rem;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--c-ink);
}

.page-about .team-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--c-line);
}

.page-about .team-list li {
  display: grid;
  grid-template-columns: 5rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 2px solid var(--c-line);
}

.page-about .team-role {
  font-family: var(--f-mono);
  font-weight: 700;
  color: var(--c-deep-blue);
}

.page-about .team-desc {
  color: var(--c-ink);
  line-height: 1.6;
}

.page-about .about-commitment {
  padding: 3.5rem 1.25rem;
  background: var(--gradient-blue);
  color: var(--c-white);
  border-top: 6px solid var(--c-gold-dark);
}

.page-about .commitment-intro {
  margin: 0 0 2rem;
  color: rgba(247, 243, 232, 0.85);
  font-size: 1.0625rem;
}

.page-about .commitment-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-about .commitment-item {
  position: relative;
  padding: 1.5rem;
  background: rgba(10, 35, 66, 0.75);
  border: 1px solid rgba(242, 209, 107, 0.3);
  border-left: 6px solid var(--c-cinnabar);
}

.page-about .commitment-num {
  margin: 0 0 0.5rem;
  font-family: var(--f-mono);
  font-weight: 700;
  color: var(--c-gold-light);
}

.page-about .commitment-item h3 {
  margin: 0 0 0.625rem;
  font-family: var(--f-heading);
  font-size: 1.25rem;
  color: var(--c-white);
}

.page-about .commitment-item p {
  margin: 0;
  line-height: 1.75;
  color: rgba(247, 243, 232, 0.85);
}

.page-about .commitment-item a {
  color: var(--c-gold-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 860px) {
  .page-about .about-hero {
    padding: 5rem 3rem 5.5rem;
  }

  .page-about .about-hero h1 {
    max-width: 48rem;
  }

  .page-about .about-lead {
    max-width: 56rem;
    font-size: 1.125rem;
  }

  .page-about .about-origin {
    padding: 5rem 3rem 3.5rem;
  }

  .page-about .origin-layout {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .origin-figure {
    margin-top: 1.5rem;
  }

  .page-about .about-idea {
    padding: 5rem 3rem;
  }

  .page-about .idea-list {
    display: grid;
    grid-template-columns: 1fr 1.3fr 1fr;
    gap: 1.75rem;
    align-items: stretch;
  }

  .page-about .about-timeline {
    padding: 5rem 3rem;
  }

  .page-about .timeline-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .year-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: sticky;
    top: 2rem;
    align-self: start;
    overflow: visible;
    padding: 0;
  }

  .page-about .year-nav-title {
    display: block;
    margin: 0 0 0.5rem;
    font-family: var(--f-mono);
    font-size: 0.8125rem;
    letter-spacing: 0.12em;
    color: var(--c-gold-dark);
    text-transform: uppercase;
  }

  .page-about .year-nav-link {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border: 2px solid transparent;
    border-left: 4px solid var(--c-line);
    box-shadow: none;
    background: transparent;
    color: var(--c-deep-blue);
    white-space: normal;
  }

  .page-about .year-nav-link:hover,
  .page-about .year-nav-link:focus-visible {
    background: var(--c-tag);
    border-left-color: var(--c-gold-dark);
  }

  .page-about .about-team {
    padding: 5rem 3rem;
  }

  .page-about .team-layout {
    display: grid;
    grid-template-columns: 0.85fr 1.15fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .team-summary {
    font-size: 1.125rem;
  }

  .page-about .about-commitment {
    padding: 5rem 3rem;
  }

  .page-about .commitment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }
}

@media (min-width: 1280px) {
  .page-about .about-hero,
  .page-about .about-origin,
  .page-about .about-idea,
  .page-about .about-timeline,
  .page-about .about-team,
  .page-about .about-commitment {
    padding-left: 4rem;
    padding-right: 4rem;
  }
}