.page-about {
  background-color: var(--paper);
  color: var(--ink);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.page-about .breadcrumb-current {
  color: var(--ink);
  font-weight: 500;
}

.page-about-hero {
  position: relative;
  padding: 3rem 0 4rem;
  border-bottom: 1px solid var(--silver);
}

.page-about-hero .section-index {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  color: var(--orange);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-about-hero .section-index::before {
  content: "";
  display: inline-block;
  width: 2rem;
  height: 2px;
  background: var(--neon);
}

.page-about-hero .section-title {
  margin: 0 0 1.5rem;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  max-width: 760px;
  letter-spacing: -0.02em;
}

.page-about-hero .lead {
  max-width: 720px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about-story {
  padding: 4rem 0;
}

.page-about-story .section-header,
.page-about-data .section-header,
.page-about-milestones .section-header,
.page-about-ecosystem .section-header {
  margin-bottom: 2.5rem;
}

.page-about-story .section-index,
.page-about-data .section-index,
.page-about-milestones .section-index,
.page-about-ecosystem .section-index {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-about-story .section-index::before,
.page-about-data .section-index::before,
.page-about-milestones .section-index::before,
.page-about-ecosystem .section-index::before {
  content: "";
  display: inline-block;
  width: 1.5rem;
  height: 2px;
  background: var(--orange);
}

.page-about-story .section-title,
.page-about-data .section-title,
.page-about-milestones .section-title,
.page-about-ecosystem .section-title {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
}

.page-about-story .section-desc,
.page-about-data .section-desc,
.page-about-milestones .section-desc,
.page-about-ecosystem .section-desc {
  margin-top: 0.75rem;
  max-width: 680px;
  color: var(--muted);
  line-height: 1.7;
}

.page-about-story-grid {
  align-items: center;
  gap: 2rem;
}

.page-about-story-text p {
  margin: 0 0 1rem;
  line-height: 1.8;
  font-size: 0.95rem;
  color: var(--ink);
}

.page-about-story-text p:last-child {
  margin-bottom: 0;
}

.page-about-story-image {
  order: -1;
}

.page-about-story-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-about-data {
  padding: 4rem 0;
  background: linear-gradient(180deg, var(--paper) 0%, var(--light-blue) 100%);
  border-top: 1px solid var(--silver);
  border-bottom: 1px solid var(--silver);
}

.page-about-data-grid {
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-about-data-card {
  background: var(--white);
  border: 1px solid var(--silver);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about-data-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

.page-about-data-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.page-about-data-num {
  display: block;
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.page-about-data-num small {
  font-size: 1rem;
  font-weight: 400;
  margin-left: 0.15rem;
  color: var(--muted);
}

.page-about-data-card p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about-data-chart {
  max-width: 800px;
  margin: 0 auto;
}

.page-about-data-chart img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  background: var(--white);
}

.page-about-milestones {
  padding: 4rem 0;
}

.page-about-timeline {
  position: relative;
  padding-left: 1.5rem;
}

.page-about-timeline::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: repeating-linear-gradient(
    to bottom,
    var(--silver) 0px,
    var(--silver) 6px,
    transparent 6px,
    transparent 12px
  );
}

.page-about-timeline-item {
  position: relative;
  margin-bottom: 2rem;
}

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

.page-about-timeline-marker {
  position: absolute;
  left: -1.5rem;
  top: 0.75rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: var(--orange);
  border: 2px solid var(--paper);
  box-shadow: 0 0 0 2px var(--orange);
  z-index: 1;
}

.page-about-timeline-marker .mono {
  display: none;
}

.page-about-timeline-content {
  background: var(--white);
  border: 1px solid var(--silver);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.2s ease;
}

.page-about-timeline-content:hover {
  box-shadow: var(--shadow-card-hover);
}

.page-about-timeline-content h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-about-timeline-content p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-about-ecosystem {
  padding: 4rem 0 5rem;
  background: var(--deep-blue);
  color: var(--white);
  border-top: 1px solid var(--silver);
}

.page-about-ecosystem .section-index {
  color: var(--neon);
}

.page-about-ecosystem .section-title {
  color: var(--white);
}

.page-about-ecosystem .section-desc {
  color: var(--silver);
}

.page-about-eco-grid {
  gap: 2rem;
  align-items: center;
}

.page-about-eco-text p {
  margin: 0 0 1rem;
  line-height: 1.8;
  font-size: 0.95rem;
  color: var(--silver);
}

.page-about-eco-text p:last-child {
  margin-bottom: 0;
}

.page-about-eco-text a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px dashed var(--neon);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about-eco-text a:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.page-about-eco-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.2);
}

@media (min-width: 768px) {
  .page-about-hero {
    padding: 4rem 0 5rem;
  }

  .page-about-story-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
  }

  .page-about-story-image {
    order: 2;
  }

  .page-about-data-grid {
    gap: 1.5rem;
  }

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

  .page-about-timeline::before {
    left: 1rem;
  }

  .page-about-timeline-item {
    display: flex;
    gap: 2.5rem;
  }

  .page-about-timeline-marker {
    position: relative;
    left: -3rem;
    top: auto;
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border: 2px solid var(--orange);
  }

  .page-about-timeline-marker .mono {
    display: inline;
    font-size: 0.7rem;
    color: var(--ink);
    white-space: nowrap;
  }

  .page-about-timeline-content {
    flex: 1;
  }

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

  .page-about-eco-image {
    order: 2;
  }
}