.page-about {
  --about-deep: #1A252F;
  --about-line: rgba(241, 196, 15, 0.32);
  --about-on-dark: #ECF0F1;
  --about-muted-on-dark: rgba(236, 240, 241, 0.72);
  --about-panel-radius: 8px;
  background: var(--page-bg);
  color: var(--text-dark);
  scroll-padding-top: 20px;
}

.page-about__wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 20px 64px;
}

.page-about__head {
  padding: 42px 0 26px;
  border-bottom: 1px solid var(--border-gray);
  margin-bottom: 48px;
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font: 12px/1.6 var(--font-mono);
  color: var(--muted);
  margin-bottom: 14px;
}

.page-about .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.page-about .crumb-sep {
  color: var(--border-gray);
}

.page-about__title {
  font: 800 28px/1.25 var(--font-head);
  color: var(--base-dark);
  letter-spacing: 0.5px;
  margin: 0 0 12px;
}

.page-about__lead {
  font: 15px/1.8 var(--font-mono);
  color: var(--text-dark);
  max-width: 900px;
  margin: 0;
}

.page-about__block {
  margin: 0 0 56px;
}

.page-about__section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin: 0 0 20px;
}

.page-about__kicker {
  display: block;
  font: 700 11px/1 var(--font-mono);
  letter-spacing: 0.16em;
  color: var(--tag-cyan);
  margin-bottom: 6px;
}

.page-about__section-head h2 {
  font: 800 24px/1.3 var(--font-head);
  color: var(--base-dark);
  margin: 0;
}

.page-about__section-meta {
  font: 12px/1 var(--font-mono);
  color: var(--muted);
  border: 1px solid var(--border-gray);
  padding: 5px 8px;
  border-radius: 2px;
  white-space: nowrap;
}

.page-about__stat-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about__stat {
  position: relative;
  border-radius: var(--radius);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 148px;
  border: 1px solid transparent;
  box-shadow: var(--shadow);
}

.page-about__stat-num {
  font: 800 30px/1 var(--font-head);
  display: block;
}

.page-about__stat-label {
  font: 12px/1.5 var(--font-mono);
  opacity: 0.88;
}

.page-about__stat-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.page-about__stat--total {
  background: linear-gradient(135deg, var(--base-dark), var(--base-dark-deep));
  color: var(--ink-on-dark);
}

.page-about__stat--asia {
  background: var(--asia-purple);
  color: #FFFFFF;
}

.page-about__stat--eu {
  background: var(--europe-green);
  color: #FFFFFF;
}

.page-about__stat--jp {
  background: var(--card-cyan);
  color: #FFFFFF;
}

.page-about__stat--tags {
  background: var(--panel-bg);
  border-color: var(--tag-purple);
  color: var(--tag-purple);
}

.page-about__stat--years {
  background: var(--panel-bg);
  border-color: var(--tag-cyan);
  color: var(--tag-cyan);
}

.page-about__stat--clarity {
  background: var(--panel-bg);
  border-color: var(--card-orange);
  color: var(--card-orange);
}

.page-about__stat--update {
  background: var(--accent-yellow);
  border-color: var(--accent-yellow);
  color: var(--base-dark);
}

.page-about__stat--update .status-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--base-dark);
  color: var(--accent-yellow);
}

.page-about__tax-grid {
  display: grid;
  gap: 26px;
}

.page-about__layer-stack {
  display: grid;
  gap: 0;
}

.page-about__layer {
  justify-self: center;
  border-radius: var(--radius);
  padding: 18px 16px;
  color: #FFFFFF;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about__layer--country {
  width: 88%;
  background: var(--asia-purple);
}

.page-about__layer--year {
  width: 94%;
  background: var(--europe-green);
}

.page-about__layer--clarity {
  width: 100%;
  background: var(--card-cyan);
  color: var(--base-dark);
}

.page-about__layer--clarity .page-about__layer-label,
.page-about__layer--clarity .page-about__layer-count {
  color: var(--base-dark);
}

.page-about__layer-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 10px;
}

.page-about__layer-label {
  font: 700 11px/1 var(--font-mono);
  letter-spacing: 0.12em;
  opacity: 0.78;
}

.page-about__layer-head h3 {
  font: 800 18px/1.2 var(--font-head);
  margin: 0;
}

.page-about__layer-count {
  font: 700 12px/1 var(--font-mono);
  margin-left: auto;
  background: rgba(255, 255, 255, 0.18);
  padding: 4px 8px;
  border-radius: 2px;
}

.page-about__layer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about__layer-join {
  width: 100%;
  height: 28px;
  position: relative;
}

.page-about__layer-join::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-gray);
  transform: translateX(-50%);
}

.page-about__layer-join::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 8px;
  background: var(--card-orange);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 2px solid var(--page-bg);
}

.page-about__tax-figure {
  margin: 0;
}

.page-about__tax-figure figcaption {
  margin-top: 10px;
  font: 12px/1.7 var(--font-mono);
  color: var(--muted);
}

.page-about__refresh-block {
  background: var(--base-dark);
  color: var(--ink-on-dark);
  padding: 40px 20px 48px;
  margin: 0 0 56px;
}

.page-about__refresh-inner {
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about__refresh-block .page-about__section-head h2 {
  color: var(--ink-on-dark);
}

.page-about__refresh-block .page-about__section-meta {
  color: var(--ink-on-dark);
  border-color: rgba(236, 240, 241, 0.3);
}

.page-about__refresh-grid {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-about__clock {
  position: relative;
  max-width: 300px;
  margin: 0 auto;
}

.page-about__clock-frame {
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px solid var(--accent-yellow);
  overflow: hidden;
}

.page-about__clock-frame img {
  width: 100%;
  height: auto;
  display: block;
}

.page-about__clock-tip {
  position: absolute;
  left: 50%;
  bottom: -12px;
  transform: translateX(-50%) translateY(6px);
  background: var(--accent-yellow);
  color: var(--base-dark);
  font: 700 12px/1 var(--font-mono);
  padding: 6px 10px;
  border-radius: 2px;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
  white-space: nowrap;
  z-index: 2;
}

.page-about__clock:hover .page-about__clock-tip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.page-about__tl {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about__tl-item {
  position: relative;
  padding: 0 0 18px 26px;
  border-left: 2px solid var(--about-line);
}

.page-about__tl-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about__tl-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 2px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-yellow);
  border: 3px solid var(--base-dark);
  box-shadow: 0 0 0 2px rgba(241, 196, 15, 0.35);
}

.page-about__tl-item.is-pending::before {
  background: var(--border-gray);
  box-shadow: 0 0 0 2px rgba(189, 195, 199, 0.35);
}

.page-about__tl-title {
  display: block;
  font: 700 15px/1.4 var(--font-head);
  color: var(--ink-on-dark);
}

.page-about__tl-meta {
  display: block;
  font: 12px/1.6 var(--font-mono);
  color: var(--about-muted-on-dark);
  margin-top: 2px;
}

.page-about__tl-item .status-badge {
  display: inline-block;
  margin-top: 8px;
}

.page-about__refresh-block .status-badge {
  font-size: 11px;
  padding: 3px 8px;
}

.page-about__search-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about__search-item {
  background: var(--panel-bg);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  gap: 12px;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.page-about__search-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--card-orange);
}

.page-about__search-item a {
  color: var(--card-orange);
  text-decoration: none;
}

.page-about__search-item a:hover {
  text-decoration: underline;
}

.page-about__search-icon {
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font: 800 13px/1 var(--font-mono);
  color: #FFFFFF;
}

.page-about__icon--asia {
  background: var(--tag-purple);
}

.page-about__icon--year {
  background: var(--tag-cyan);
}

.page-about__icon--clarity {
  background: var(--card-orange);
}

.page-about__icon--layer {
  background: var(--base-dark);
}

.page-about__icon--word {
  background: var(--status-green);
}

.page-about__icon--ab {
  background: var(--status-red);
}

.page-about__icon--slow {
  background: var(--accent-yellow);
  color: var(--base-dark);
}

.page-about__icon--batch {
  background: var(--europe-green);
}

.page-about__icon--way {
  background: var(--card-cyan);
}

.page-about__icon--client {
  background: var(--card-orange);
}

.page-about__search-item h3 {
  font: 800 15px/1.4 var(--font-head);
  color: var(--base-dark);
  margin: 0 0 6px;
}

.page-about__search-item p {
  font: 13px/1.7 var(--font-mono);
  color: var(--muted);
  margin: 0;
}

.page-about__devices-grid {
  display: grid;
  gap: 26px;
}

.page-about__device-image {
  margin-bottom: 16px;
}

.page-about__device-image img {
  width: 100%;
  height: auto;
  display: block;
}

.page-about__table-wrap {
  overflow-x: auto;
}

.page-about .data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel-bg);
  font: 13px/1.6 var(--font-mono);
  min-width: 480px;
}

.page-about .data-table caption {
  text-align: left;
  font: 800 14px/1.4 var(--font-head);
  color: var(--base-dark);
  padding: 0 0 8px;
}

.page-about .data-table th,
.page-about .data-table td {
  padding: 10px 12px;
  border: 1px solid var(--border-gray);
  text-align: left;
  vertical-align: top;
}

.page-about .data-table th {
  background: var(--base-dark);
  color: var(--ink-on-dark);
  font: 700 12px/1.4 var(--font-head);
}

.page-about .data-table .stat {
  font-weight: 800;
  color: var(--card-orange);
  white-space: nowrap;
}

.page-about .data-table .status-badge {
  white-space: nowrap;
}

.page-about__adapt-head {
  font: 800 14px/1.4 var(--font-head);
  color: var(--base-dark);
  margin-bottom: 10px;
}

.page-about .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .entry-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel-bg);
  border: 1px solid var(--border-gray);
  border-radius: var(--radius);
  padding: 10px 12px;
}

.page-about .seq-mark {
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 11px;
}

.page-about .entry-title {
  flex: 1 1 auto;
  font: 700 14px/1.4 var(--font-head);
  color: var(--base-dark);
}

.page-about .entry-meta {
  font: 12px/1.4 var(--font-mono);
  color: var(--muted);
  white-space: normal;
}

.page-about .entry-meta a {
  color: var(--card-orange);
  text-decoration: none;
}

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

.page-about .media-frame {
  aspect-ratio: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border-gray);
  overflow: hidden;
  background: var(--panel-bg);
}

.page-about .media-frame img {
  width: 100%;
  height: auto;
  display: block;
}

.page-about .tag {
  font: 700 12px/1 var(--font-mono);
  padding: 5px 8px;
  border-radius: 2px;
  display: inline-block;
}

.page-about .tag-asia {
  background: rgba(142, 68, 173, 0.15);
  color: var(--tag-purple);
}

.page-about .tag-eu {
  background: rgba(30, 132, 73, 0.15);
  color: var(--europe-green);
}

.page-about .tag-year {
  background: rgba(22, 160, 133, 0.14);
  color: var(--tag-cyan);
}

.page-about .tag-clarity {
  background: rgba(230, 126, 34, 0.15);
  color: var(--card-orange);
}

.page-about .tag-update {
  background: var(--accent-yellow);
  color: var(--base-dark);
}

.page-about a:focus-visible {
  outline: 3px solid var(--accent-yellow);
  outline-offset: 2px;
}

@media (min-width: 640px) {
  .page-about__stat-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about__search-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about__title {
    font-size: 32px;
  }

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

  .page-about__stat-num {
    font-size: 32px;
  }

  .page-about__tax-grid {
    grid-template-columns: 5fr 7fr;
    align-items: center;
    gap: 30px;
  }

  .page-about__layer--country {
    width: 62%;
  }

  .page-about__layer--year {
    width: 82%;
  }

  .page-about__layer--clarity {
    width: 100%;
  }

  .page-about__refresh-block {
    padding: 48px 20px 56px;
  }

  .page-about__refresh-grid {
    grid-template-columns: 320px 1fr;
    gap: 40px;
  }

  .page-about__devices-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-about__search-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}