.page-about {
  --zone-tech: #3498db;
  --zone-society: #546e7a;
  --zone-apple: #5b6aa8;
  background-color: var(--bg-deep);
  color: var(--text-light);
}
.page-about .page-hero {
  background: var(--bg-deep);
  border-bottom: 6px solid var(--border-ink);
  padding: 2.5rem 0 2.75rem;
}
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  font-family: var(--font-body);
  font-size: 0.875rem;
}
.page-about .breadcrumb-link {
  color: var(--accent-highlight);
  text-decoration: none;
  font-weight: 700;
}
.page-about .breadcrumb-link::after {
  content: "/";
  margin-left: 0.5rem;
  color: rgba(236, 240, 241, 0.4);
}
.page-about .breadcrumb-current {
  color: var(--text-light);
  opacity: 0.75;
}
.page-about .hero-scope {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.page-about .hero-scope-main {
  flex: 1;
}
.page-about .page-title {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 5vw, 3.1rem);
  line-height: 1.12;
  margin: 0 0 1rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  overflow-wrap: break-word;
  text-wrap: balance;
}
.page-about .page-lead {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(236, 240, 241, 0.9);
  margin: 0;
  max-width: 62ch;
}
.page-about .page-lead strong {
  color: var(--accent-highlight);
  font-weight: 700;
}
.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 0;
}
.page-about .stat-block {
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid var(--border-ink);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
  text-align: center;
  transition: background 0.2s ease;
}
.page-about .stat-block:hover {
  background: rgba(241, 196, 15, 0.16);
}
.page-about .stat-num {
  display: block;
  font-family: var(--font-head);
  font-size: 2rem;
  line-height: 1;
  color: var(--accent-highlight);
}
.page-about .stat-label {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.8rem;
  color: rgba(236, 240, 241, 0.8);
}
.page-about .scope-band {
  background: var(--bg-card);
  color: var(--text-dark);
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
}
.page-about .scope-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}
.page-about .section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 4px solid var(--border-ink);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
}
.page-about .section-title {
  font-family: var(--font-head);
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1.2;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-dark);
}
.page-about .section-more {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}
.page-about .scope-band .section-more {
  color: var(--bg-filter);
}
.page-about .scope-lead {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-dark);
  margin: 0 0 1.5rem;
}
.page-about .scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(26, 26, 26, 0.15);
}
.page-about .scope-item {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1rem 0;
  border-bottom: 1px solid rgba(26, 26, 26, 0.15);
}
.page-about .scope-item:hover .scope-index {
  background: var(--accent-highlight);
  color: var(--border-ink);
}
.page-about .scope-index {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--border-ink);
  color: var(--accent-highlight);
  font-family: var(--font-head);
  font-size: 0.9rem;
  line-height: 1;
  transition: background 0.2s ease, color 0.2s ease;
}
.page-about .scope-body {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.page-about .scope-body strong {
  color: var(--text-dark);
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: 0.02em;
}
.page-about .scope-body em {
  color: rgba(26, 26, 26, 0.72);
  font-style: normal;
  font-size: 0.9rem;
  line-height: 1.5;
}
.page-about .scope-media {
  margin: 0;
  background: #ffffff;
  border: 2px solid var(--border-ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  padding: 1rem;
  text-align: center;
}
.page-about .scope-media img {
  width: 280px;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}
.page-about .scope-media figcaption {
  margin-top: 0.7rem;
  font-size: 0.8rem;
  color: var(--text-dark);
  opacity: 0.75;
}
.page-about .zone-band {
  background: var(--bg-deep);
  color: var(--text-light);
  border-top: 4px solid var(--border-ink);
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
}
.page-about .zone-band .section-title {
  color: var(--text-light);
}
.page-about .zone-band .section-more {
  color: var(--accent-highlight);
}
.page-about .zone-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-about .zone-card {
  --zone-bg: var(--bg-hotlist);
  --zone-fg: var(--text-light);
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 190px;
  padding: 1.25rem;
  border: 2px solid var(--border-ink);
  border-radius: var(--radius-lg);
  background: var(--zone-bg);
  color: var(--zone-fg);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.page-about .zone-card--hot {
  --zone-bg: var(--bg-hotlist);
  --zone-fg: var(--text-light);
}
.page-about .zone-card--sub {
  --zone-bg: var(--bg-tagcloud);
  --zone-fg: var(--text-light);
}
.page-about .zone-card--media {
  --zone-bg: var(--bg-collection);
  --zone-fg: var(--text-dark);
}
.page-about .zone-card--society {
  --zone-bg: var(--zone-society);
  --zone-fg: var(--text-light);
}
.page-about .zone-card--tech {
  --zone-bg: var(--zone-tech);
  --zone-fg: var(--text-dark);
}
.page-about .zone-card--life {
  --zone-bg: var(--status-updated);
  --zone-fg: var(--text-dark);
}
.page-about .zone-card--apple {
  --zone-bg: var(--zone-apple);
  --zone-fg: var(--text-light);
}
.page-about .zone-card--filter {
  --zone-bg: var(--accent-highlight);
  --zone-fg: var(--text-dark);
}
.page-about .zone-card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}
.page-about .zone-symbol {
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  border: 3px solid currentColor;
  background: transparent;
  opacity: 0.9;
}
.page-about .zone-count {
  font-family: var(--font-head);
  font-size: 2.15rem;
  line-height: 1;
  letter-spacing: 0.02em;
}
.page-about .zone-count small {
  font-size: 0.75rem;
  margin-left: 0.15rem;
  font-weight: 400;
  opacity: 0.7;
}
.page-about .zone-name {
  font-family: var(--font-head);
  font-size: 1.12rem;
  line-height: 1.25;
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.page-about .zone-tags {
  font-size: 0.8rem;
  line-height: 1.5;
  margin: 0 0 0.85rem;
  opacity: 0.78;
}
.page-about .zone-extra {
  margin-top: auto;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  border: 2px solid currentColor;
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.7rem;
  opacity: 0.9;
  transition: background 0.2s ease, color 0.2s ease;
}
@media (hover: hover) {
  .page-about .zone-card:hover {
    transform: translateY(-4px);
    box-shadow: 6px 6px 0 var(--border-ink);
  }
  .page-about .zone-card:hover .zone-extra {
    background: var(--border-ink);
    color: var(--accent-highlight);
  }
}
.page-about .zone-note {
  margin: 1.5rem 0 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(236, 240, 241, 0.72);
}
.page-about .update-band {
  background: var(--bg-filter);
  color: var(--text-light);
  border-top: 4px solid var(--border-ink);
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
}
.page-about .update-band .section-title {
  color: var(--text-light);
}
.page-about .update-band .section-more {
  color: var(--accent-highlight);
}
.page-about .update-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}
.page-about .update-main {
  min-width: 0;
}
.page-about .update-timeline {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  border-left: 3px solid rgba(236, 240, 241, 0.35);
  margin-left: 0.45rem;
}
.page-about .update-item {
  position: relative;
  padding: 0 0 1.75rem 1.5rem;
}
.page-about .update-item:last-child {
  padding-bottom: 0;
}
.page-about .update-item::before {
  content: "";
  position: absolute;
  left: -0.6rem;
  top: 0.3rem;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: var(--accent-highlight);
  border: 2px solid var(--border-ink);
}
.page-about .update-item:hover::before {
  transform: scale(1.25);
}
.page-about .update-item p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: rgba(236, 240, 241, 0.9);
}
.page-about .update-time {
  display: block;
  font-family: var(--font-head);
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--accent-highlight);
  margin-bottom: 0.2rem;
}
.page-about .update-media {
  margin: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid var(--border-ink);
  border-radius: var(--radius-lg);
  padding: 1rem;
  text-align: center;
}
.page-about .update-media img {
  width: 360px;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}
.page-about .update-media figcaption {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  opacity: 0.85;
}
.page-about .version-band {
  background: var(--bg-hotlist);
  color: var(--text-light);
  border-top: 4px solid var(--border-ink);
  padding: clamp(2.5rem, 5vw, 4.5rem) 0;
}
.page-about .version-band .section-title {
  color: var(--text-light);
}
.page-about .version-band .section-more {
  color: var(--accent-highlight);
}
.page-about .version-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}
.page-about .version-main {
  min-width: 0;
}
.page-about .version-table-wrap {
  overflow-x: auto;
  background: rgba(255, 255, 255, 0.08);
  border: 3px solid var(--border-ink);
  border-radius: var(--radius-lg);
}
.page-about .data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 0.92rem;
  min-width: 560px;
}
.page-about .data-table th,
.page-about .data-table td {
  padding: 0.9rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(236, 240, 241, 0.2);
  vertical-align: top;
}
.page-about .data-table thead th {
  background: var(--border-ink);
  color: var(--accent-highlight);
  font-family: var(--font-head);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 3px solid var(--border-ink);
}
.page-about .data-table tbody tr {
  transition: background 0.2s ease;
}
.page-about .data-table tbody tr:hover,
.page-about .data-table tbody tr:focus-within {
  background: rgba(241, 196, 15, 0.2);
}
.page-about .data-table tbody tr:last-child td {
  border-bottom: 0;
}
.page-about .data-table tbody td:first-child {
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.page-about .version-row--current {
  background: rgba(255, 255, 255, 0.14);
  box-shadow: inset 4px 0 0 var(--accent-highlight);
}
.page-about .version-row--current td:first-child {
  color: var(--accent-highlight);
}
.page-about .version-tag {
  display: inline-block;
  vertical-align: middle;
  background: var(--accent-highlight);
  color: var(--text-dark);
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  padding: 0.15rem 0.45rem;
  margin-left: 0.25rem;
  letter-spacing: 0.03em;
}
.page-about .version-foot {
  margin: 1.1rem 0 0;
  font-size: 0.9rem;
  line-height: 1.6;
  opacity: 0.95;
}
.page-about .version-foot a {
  color: var(--accent-highlight);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid currentColor;
}
.page-about .version-media {
  margin: 0;
  background: rgba(255, 255, 255, 0.14);
  border: 2px solid var(--border-ink);
  border-radius: var(--radius-lg);
  padding: 1rem;
  text-align: center;
}
.page-about .version-media img {
  width: 200px;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}
.page-about .version-media figcaption {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  opacity: 0.85;
}
.page-about .route-band {
  background: var(--bg-card);
  color: var(--text-dark);
  border-top: 4px solid var(--border-ink);
  padding: clamp(2rem, 4vw, 3.5rem) 0;
}
.page-about .route-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-about .route-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  background: var(--bg-deep);
  color: var(--text-light);
  text-decoration: none;
  border: 2px solid var(--border-ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-hard);
  padding: 1.25rem 1.4rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
@media (hover: hover) {
  .page-about .route-card:hover {
    transform: translateY(-3px);
    box-shadow: 6px 6px 0 var(--border-ink);
  }
}
.page-about .route-card-title {
  font-family: var(--font-head);
  font-size: 1.15rem;
  line-height: 1.3;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--accent-highlight);
}
.page-about .route-card-desc {
  font-size: 0.85rem;
  line-height: 1.5;
  opacity: 0.65;
}
.page-about img {
  max-width: 100%;
  height: auto;
}
@media (min-width: 640px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .zone-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .route-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 960px) {
  .page-about .hero-scope {
    flex-direction: row;
    align-items: flex-end;
    gap: 3rem;
  }
  .page-about .hero-scope-main {
    flex: 1 1 auto;
  }
  .page-about .hero-stats {
    min-width: 420px;
    flex: 0 0 auto;
  }
  .page-about .scope-grid {
    grid-template-columns: 1fr 320px;
    gap: 3rem;
  }
  .page-about .zone-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .update-grid {
    grid-template-columns: 1fr 360px;
    gap: 3rem;
  }
  .page-about .version-grid {
    grid-template-columns: 1fr 240px;
    gap: 3rem;
  }
}