.page-about {
  --about-cut: 14px;
  line-height: 1.6;
  background: var(--color-page-bg);
}

.page-about .about-inner {
  max-width: 1220px;
  margin: 0 auto;
  padding: clamp(20px, 4vw, 44px) 20px;
}

.page-about .about-breadcrumbs {
  max-width: 1220px;
  margin: 0 auto;
  padding: 18px 20px 0;
  color: var(--color-text-dark);
}

.page-about .about-breadcrumbs a {
  color: var(--color-accent-teal);
  text-decoration: none;
  font-weight: 700;
}

.page-about .about-breadcrumbs .sep {
  margin: 0 8px;
  color: var(--color-section-orange);
  font-family: var(--font-mono);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  margin: 0;
}

.page-about .num {
  font-family: var(--font-mono);
}

.page-about .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 22px;
}

.page-about .section-head .section-kicker {
  margin-left: auto;
}

.page-about .section-index {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--color-section-orange);
}

.page-about .section-purple .section-index,
.page-about .section-orange .section-index {
  color: var(--color-accent-yellow);
}

.page-about .section-purple .section-title,
.page-about .section-orange .section-title {
  color: var(--color-text-light);
}

.page-about .section-purple .section-kicker,
.page-about .section-orange .section-kicker {
  color: var(--color-accent-yellow);
}

.page-about .about-hero {
  background-color: var(--color-section-purple);
  color: var(--color-text-light);
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.045) 0 8px, transparent 8px 16px);
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

.page-about .about-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  color: var(--color-accent-yellow);
  border: 2px solid var(--color-accent-yellow);
  padding: 4px 10px;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-about .about-hero h1 {
  font-size: clamp(1.9rem, 5vw, 3.4rem);
  line-height: 1.12;
  margin: 0 0 18px;
  max-width: 820px;
  color: var(--color-text-light);
}

.page-about .about-lede {
  font-size: 1.02rem;
  max-width: 720px;
  margin: 0 0 22px;
  color: rgba(255, 250, 243, 0.88);
}

.page-about .about-lede .num {
  color: var(--color-accent-yellow);
  font-weight: 700;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-actions .btn {
  border: 3px solid var(--color-border);
  box-shadow: 5px 5px 0 rgba(31, 26, 23, 0.25);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .about-stat {
  background: var(--color-card-cream);
  color: var(--color-text-dark);
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow);
  padding: 16px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-stat .num {
  font-size: 1.9rem;
  line-height: 1;
  color: var(--color-section-purple);
}

.page-about .about-stat-label {
  font-family: var(--font-head);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-dark);
}

.page-about .about-scope {
  background-color: var(--color-card-cream);
  background-image: radial-gradient(var(--color-border) 1px, transparent 1px);
  background-size: 18px 18px;
}

.page-about .about-scope .section-head {
  border-bottom: 3px solid var(--color-border);
  padding-bottom: 14px;
  margin-bottom: 22px;
}

.page-about .about-scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .about-scope-card {
  background: rgba(255, 250, 243, 0.72);
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow);
  padding: 20px;
}

.page-about .about-scope-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--color-section-purple);
}

.page-about .about-scope-card p {
  margin: 0;
}

.page-about .about-type-hint {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text-dark);
  border-top: 2px dashed var(--color-section-orange);
  padding-top: 10px;
}

.page-about .about-region-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 12px;
}

.page-about .about-region-list li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--color-border);
  padding: 2px 0;
  font-size: 0.92rem;
}

.page-about .about-year-bars {
  display: grid;
  gap: 10px;
  margin-top: 8px;
}

.page-about .about-year-row {
  display: grid;
  grid-template-columns: 76px 1fr 40px;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.page-about .about-year-row .metric-bar {
  height: 10px;
  opacity: 0.35;
}

.page-about .about-year-row .metric-fill {
  background: var(--color-accent-teal);
}

.page-about .about-svg-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.page-about .about-stack-svg {
  width: 100%;
  max-width: 220px;
  height: auto;
  margin-top: 10px;
}

.page-about .about-taxonomy {
  background-color: var(--color-section-orange);
  color: var(--color-text-light);
}

.page-about .about-taxonomy .section-head {
  border-bottom: 3px solid var(--color-card-cream);
  padding-bottom: 14px;
  margin-bottom: 22px;
}

.page-about .about-taxo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-taxo-h {
  display: flex;
  gap: 8px;
  align-items: baseline;
  color: var(--color-text-light);
  margin: 0 0 14px;
  font-size: 1.2rem;
}

.page-about .about-type-grid {
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .about-type-tile {
  min-height: 128px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 14px;
  border: 3px solid var(--color-border);
  box-shadow: 4px 4px 0 rgba(31, 26, 23, 0.2);
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-type-tile:hover {
  transform: translate(-3px, -3px);
  box-shadow: 8px 8px 0 rgba(31, 26, 23, 0.22);
}

.page-about .about-type-tile .tile-count {
  font-size: 1.7rem;
  line-height: 1;
  color: var(--color-text-dark);
}

.page-about .about-type-tile .tile-label {
  font-family: var(--font-head);
  font-size: 1rem;
  margin-top: auto;
  padding-top: 8px;
  color: var(--color-text-dark);
}

.page-about .about-type-tile .tile-note {
  font-size: 0.76rem;
  color: rgba(31, 26, 23, 0.72);
}

.page-about .about-type-tile .tile-arrow {
  display: block;
  text-align: right;
  font-family: var(--font-mono);
  color: var(--color-accent-teal);
  font-size: 1.1rem;
  line-height: 1;
}

.page-about .about-taxo-side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-about .about-taxo-figure {
  margin: 0;
  border: 3px solid var(--color-border);
  background: var(--color-card-cream);
  box-shadow: var(--shadow);
}

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

.page-about .about-details {
  background: rgba(0, 0, 0, 0.16);
  border: 3px solid var(--color-border);
  color: var(--color-text-light);
}

.page-about .about-details summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 14px;
  font-family: var(--font-head);
  font-size: 0.96rem;
}

.page-about .about-details summary::-webkit-details-marker {
  display: none;
}

.page-about .about-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1;
  color: var(--color-accent-yellow);
}

.page-about .about-details[open] summary::after {
  content: "–";
}

.page-about .about-details .about-tag-cloud {
  padding: 0 14px 14px;
}

.page-about .about-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-details .tag {
  border: 2px solid var(--color-border);
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--color-card-cream);
  color: var(--color-text-dark);
}

.page-about .about-updates {
  background-color: var(--color-section-purple);
  color: var(--color-text-light);
}

.page-about .about-updates .section-head {
  border-bottom: 3px solid var(--color-accent-yellow);
  padding-bottom: 14px;
  margin-bottom: 22px;
}

.page-about .about-update-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-update-copy .timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-updates .timeline-item {
  background: rgba(255, 250, 243, 0.08);
  border-left: 6px solid var(--color-accent-yellow);
  padding: 16px;
  margin-bottom: 14px;
}

.page-about .about-updates .timeline-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-about .about-updates .timeline-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-accent-yellow);
}

.page-about .about-updates .timeline-body h3 {
  font-size: 1.08rem;
  margin: 0 0 6px;
  color: var(--color-text-light);
}

.page-about .about-updates .timeline-body p {
  margin: 0;
  color: rgba(255, 250, 243, 0.88);
  font-size: 0.94rem;
}

.page-about .about-tag-line {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.page-about .about-updates .tag {
  background: var(--color-card-pink);
  border: 2px solid var(--color-border);
  color: var(--color-text-dark);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  padding: 2px 8px;
}

.page-about .about-update-visual {
  display: grid;
  gap: 12px;
  align-content: start;
  justify-items: start;
}

.page-about .about-update-visual img {
  width: 100%;
  max-width: 300px;
  height: auto;
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow);
}

.page-about .about-version-chip {
  display: inline-flex;
  justify-content: center;
  align-items: baseline;
  gap: 8px;
  background: var(--color-accent-yellow);
  border: 3px solid var(--color-border);
  color: var(--color-text-dark);
  padding: 8px 14px;
  font-family: var(--font-head);
}

.page-about .about-history {
  margin-top: 8px;
  background: rgba(0, 0, 0, 0.18);
  border: 3px solid var(--color-border);
  padding: 14px;
  color: var(--color-text-light);
}

.page-about .about-history summary {
  cursor: pointer;
  font-family: var(--font-head);
  color: var(--color-accent-yellow);
}

.page-about .about-history p {
  margin: 12px 0;
  color: rgba(255, 250, 243, 0.85);
}

.page-about .about-search {
  background-color: var(--color-card-pink);
  color: var(--color-text-dark);
}

.page-about .about-search .section-head {
  border-bottom: 3px solid var(--color-border);
  padding-bottom: 14px;
  margin-bottom: 22px;
}

.page-about .about-search-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-search-item {
  background: var(--color-card-cream);
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow);
  padding: 18px;
  display: flex;
  flex-direction: column;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-search-item:nth-child(4n+2) {
  background: var(--color-accent-yellow);
}

.page-about .about-search-item:nth-child(4n+3) {
  background: var(--color-card-pink);
}

.page-about .about-search-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 rgba(31, 26, 23, 0.2);
}

.page-about .about-search-ico {
  width: 42px;
  height: 42px;
  display: block;
  margin-bottom: 10px;
  padding: 7px;
  background: var(--color-accent-teal);
  color: var(--color-text-light);
  border: 3px solid var(--color-border);
}

.page-about .about-search-ico text {
  font-family: var(--font-head);
  fill: currentColor;
}

.page-about .about-search-item h3 {
  font-size: 1rem;
  margin: 0 0 6px;
}

.page-about .about-search-item p {
  margin: 0;
  font-size: 0.9rem;
}

.page-about .about-search-visual {
  margin: 24px 0 0;
  display: grid;
  justify-items: center;
}

.page-about .about-search-visual img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border: 3px solid var(--color-border);
  box-shadow: var(--shadow);
}

.page-about .about-search-visual figcaption {
  font-family: var(--font-mono);
  color: var(--color-text-dark);
  margin-top: 10px;
  font-size: 0.8rem;
}

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

@media (min-width: 720px) {
  .page-about .about-scope-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-scope-main {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .page-about .about-taxo-grid {
    grid-template-columns: 1.6fr 1fr;
  }

  .page-about .about-type-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-about .about-update-wrap {
    grid-template-columns: 1.4fr 0.6fr;
  }

  .page-about .about-search-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}