.page-about {
  --about-deep: #2C3E50;
  --about-forest: #1F3B2C;
  --about-cream: #F5F0E6;
  --about-gray: #EAE5D9;
  --about-ink: #111111;
  --about-text: #3D4A5C;
  --about-line: #D9D4C7;
  --about-orange: #FF6B35;
  --about-purple: #9B59B6;
  --about-blue: #3498DB;
  --about-green: #2ECC71;
  --about-amber: #F39C12;
  background: var(--about-cream);
  color: var(--about-ink);
  font-family: var(--font-body);
  line-height: 1.6;
}

.page-about a {
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}

.page-about .about-context {
  max-width: var(--container);
  margin: 0 auto;
  padding: 28px 20px 20px;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--about-text);
  margin-bottom: 14px;
}

.page-about .breadcrumb a {
  color: var(--about-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus {
  border-bottom-color: var(--about-blue);
}

.page-about .breadcrumb__sep {
  color: var(--about-line);
}

.page-about .about-headline h1 {
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  color: var(--about-ink);
}

.page-about .about-headline__lead {
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-text);
  max-width: 920px;
  margin: 0;
}

.page-about .scale-section {
  background: var(--about-deep);
  color: var(--about-cream);
}

.page-about .scale-layout {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 20px;
  display: grid;
  gap: 24px;
}

.page-about .scale-caption h2,
.page-about .dimension-caption h2,
.page-about .format-caption h2,
.page-about .update-caption h2,
.page-about .searchway-caption h2 {
  font-family: var(--font-head);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  line-height: 1.2;
}

.page-about .scale-caption p,
.page-about .dimension-caption p,
.page-about .format-caption p,
.page-about .update-caption p,
.page-about .searchway-caption p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 820px;
  margin: 0;
}

.page-about .scale-caption p {
  color: rgba(245, 240, 230, 0.78);
}

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

.page-about .scale-stat {
  background: var(--about-cream);
  color: var(--about-ink);
  padding: 16px;
  border-left: 4px solid var(--about-orange);
  display: flex;
  flex-direction: column;
  min-height: 88px;
  justify-content: center;
  box-shadow: 0 1px 0 rgba(17, 17, 17, 0.1), 0 3px 8px rgba(17, 17, 17, 0.12);
}

.page-about .scale-stat:nth-child(2) {
  border-left-color: var(--about-blue);
}

.page-about .scale-stat:nth-child(3) {
  border-left-color: var(--about-green);
}

.page-about .scale-stat:nth-child(4) {
  border-left-color: var(--about-amber);
}

.page-about .scale-stat__num {
  font-family: var(--font-head);
  font-size: 32px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-about .scale-stat__label {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--about-text);
  margin-top: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-about .scale-chart-block {
  background: rgba(17, 17, 17, 0.28);
  padding: 14px;
  border: 1px solid rgba(245, 240, 230, 0.12);
}

.page-about .scale-chart-block__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .scale-chart-block__head h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0;
  color: var(--about-cream);
}

.page-about .scale-chart-block__head span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--about-orange);
  white-space: nowrap;
}

.page-about .scale-chart-img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid rgba(245, 240, 230, 0.2);
}

.page-about .scale-region {
  background: rgba(17, 17, 17, 0.28);
  padding: 18px 14px;
  border: 1px solid rgba(245, 240, 230, 0.12);
}

.page-about .scale-region h3 {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 14px;
  color: var(--about-cream);
}

.page-about .region-row {
  display: grid;
  grid-template-columns: 60px 1fr 108px;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 13px;
}

.page-about .region-row:last-child {
  margin-bottom: 0;
}

.page-about .region-row__name {
  font-weight: 700;
  color: var(--about-cream);
}

.page-about .region-bar {
  height: 12px;
  background: rgba(245, 240, 230, 0.15);
  overflow: hidden;
}

.page-about .region-bar__fill {
  display: block;
  height: 100%;
  border-radius: 0;
}

.page-about .region-row__value {
  font-family: var(--font-mono);
  text-align: right;
  color: var(--about-cream);
  white-space: nowrap;
}

.page-about .region-row__value em {
  font-style: normal;
  font-weight: 700;
  margin-left: 4px;
}

.page-about .region-row--na .region-row__value em {
  color: var(--about-orange);
}

.page-about .region-row--eu .region-row__value em {
  color: var(--about-purple);
}

.page-about .region-row--ap .region-row__value em {
  color: var(--about-blue);
}

.page-about .dimension-section {
  background: var(--about-gray);
  color: var(--about-ink);
}

.page-about .dimension-caption,
.page-about .format-caption,
.page-about .update-caption,
.page-about .searchway-caption {
  max-width: var(--container);
  margin: 0 auto 20px;
  padding: 0 20px;
}

.page-about .dimension-caption,
.page-about .format-caption,
.page-about .update-caption,
.page-about .searchway-caption {
  margin-bottom: 20px;
}

.page-about .dimension-section .dimension-caption {
  padding-top: 36px;
}

.page-about .dimension-grid {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  gap: 18px;
}

.page-about .dim-group {
  background: var(--about-cream);
  padding: 16px;
  border-top: 4px solid var(--about-blue);
  box-shadow: 0 1px 0 rgba(17, 17, 17, 0.06), 0 2px 6px rgba(17, 17, 17, 0.04);
}

.page-about .dim-group--year {
  border-top-color: var(--about-purple);
}

.page-about .dim-group--quarter {
  border-top-color: var(--about-green);
}

.page-about .dim-group--format {
  border-top-color: var(--about-orange);
}

.page-about .dim-group__title {
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--about-ink);
}

.page-about .dim-group__tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .dim-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background: var(--about-ink);
  color: var(--about-cream);
  text-decoration: none;
  padding: 12px 14px;
  min-width: 72px;
  box-shadow: 0 1px 0 rgba(17, 17, 17, 0.1), 0 2px 4px rgba(17, 17, 17, 0.08);
}

.page-about .dim-tile:hover,
.page-about .dim-tile:focus {
  transform: translateY(-2px);
}

.page-about .dim-group--region .dim-tile:hover,
.page-about .dim-group--region .dim-tile:focus {
  background: var(--about-orange);
  color: var(--about-ink);
}

.page-about .dim-group--year .dim-tile:hover,
.page-about .dim-group--year .dim-tile:focus {
  background: var(--about-purple);
  color: var(--about-cream);
}

.page-about .dim-group--quarter .dim-tile:hover,
.page-about .dim-group--quarter .dim-tile:focus {
  background: var(--about-green);
  color: var(--about-ink);
}

.page-about .dim-group--format .dim-tile:hover,
.page-about .dim-group--format .dim-tile:focus {
  background: var(--about-blue);
  color: var(--about-ink);
}

.page-about .dim-tile--lg {
  flex: 1 1 100%;
}

.page-about .dim-tile--lg + .dim-tile--lg {
  margin-left: 0;
}

.page-about .dim-tile__label {
  font-size: 12px;
  color: rgba(245, 240, 230, 0.7);
  margin-bottom: 4px;
}

.page-about .dim-tile__num {
  font-family: var(--font-head);
  font-size: 26px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-about .dim-tile--sm {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  padding: 9px 12px;
  min-width: 0;
}

.page-about .dim-tile--sm:hover,
.page-about .dim-tile--sm:focus {
  transform: translateY(-2px);
}

.page-about .dimension-structure {
  max-width: var(--container);
  margin: 22px auto 0;
  padding: 0 20px 36px;
}

.page-about .dimension-structure img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--about-line);
  background: var(--about-cream);
}

.page-about .format-section {
  background: var(--about-forest);
  color: var(--about-cream);
}

.page-about .format-caption {
  padding-top: 36px;
}

.page-about .format-caption p {
  color: rgba(245, 240, 230, 0.78);
}

.page-about .format-table-wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px 36px;
  overflow-x: auto;
}

.page-about .format-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  background: var(--about-cream);
  color: var(--about-ink);
  font-size: 14px;
  box-shadow: 0 2px 10px rgba(17, 17, 17, 0.18);
}

.page-about .format-table th {
  background: var(--about-ink);
  color: var(--about-cream);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 12px 14px;
  text-align: left;
  white-space: nowrap;
}

.page-about .format-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--about-line);
  vertical-align: middle;
}

.page-about .format-table tbody tr:nth-child(even) {
  background: var(--about-gray);
}

.page-about .format-table tbody tr:hover {
  background: rgba(155, 89, 182, 0.14);
}

.page-about .format-table tbody tr:last-child td {
  border-bottom: none;
}

.page-about .update-section {
  background: var(--about-cream);
  color: var(--about-ink);
}

.page-about .update-caption {
  padding-top: 36px;
}

.page-about .update-flow {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  gap: 16px;
}

.page-about .update-node {
  background: var(--about-gray);
  padding: 18px;
  border-left: 4px solid var(--about-green);
  position: relative;
}

.page-about .update-node:nth-child(3) {
  border-left-color: var(--about-purple);
}

.page-about .update-node:nth-child(5) {
  border-left-color: var(--about-orange);
}

.page-about .update-node__badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  letter-spacing: 0.08em;
  background: var(--about-ink);
  color: var(--about-cream);
  margin-bottom: 10px;
}

.page-about .update-node__badge--daily {
  background: var(--about-orange);
  color: var(--about-ink);
}

.page-about .update-node__badge--weekly {
  background: var(--about-purple);
  color: var(--about-cream);
}

.page-about .update-node__badge--quarterly {
  background: var(--about-green);
  color: var(--about-ink);
}

.page-about .update-node h3 {
  font-size: 17px;
  font-weight: 800;
  margin: 0 0 6px;
  color: var(--about-ink);
}

.page-about .update-node p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-text);
  margin: 0;
}

.page-about .update-node__arrow {
  display: none;
}

.page-about .update-loop-img {
  max-width: var(--container);
  margin: 22px auto 0;
  padding: 0 20px 36px;
}

.page-about .update-loop-img img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--about-line);
  background: var(--about-gray);
}

.page-about .searchway-section {
  background: var(--about-gray);
  color: var(--about-ink);
}

.page-about .searchway-caption {
  padding-top: 36px;
}

.page-about .alphabet-index {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-about .alphabet-index__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  background: var(--about-ink);
  color: var(--about-cream);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, transform 0.2s;
}

.page-about .alphabet-index__item:hover,
.page-about .alphabet-index__item:focus {
  background: var(--about-orange);
  color: var(--about-ink);
  transform: translateY(-2px);
}

.page-about .searchway-links {
  max-width: var(--container);
  margin: 0 auto;
  padding: 24px 20px 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .searchway-links .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  background: var(--about-orange);
  color: var(--about-ink);
  border: 2px solid var(--about-orange);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.page-about .searchway-links .btn-primary:hover,
.page-about .searchway-links .btn-primary:focus {
  background: transparent;
  color: var(--about-orange);
}

.page-about .btn-plain {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  background: transparent;
  color: var(--about-ink);
  border: 2px solid var(--about-ink);
  transition: background 0.2s, color 0.2s;
}

.page-about .btn-plain:hover,
.page-about .btn-plain:focus {
  background: var(--about-ink);
  color: var(--about-cream);
}

@media (min-width: 992px) {
  .page-about .about-context {
    padding: 40px 40px 28px;
  }

  .page-about .about-headline h1 {
    font-size: 42px;
  }

  .page-about .about-headline__lead {
    font-size: 16px;
  }

  .page-about .scale-layout {
    grid-template-columns: 1fr 1fr;
    gap: 28px 32px;
    padding: 56px 40px;
  }

  .page-about .scale-caption {
    grid-column: 1 / -1;
  }

  .page-about .scale-caption h2,
  .page-about .dimension-caption h2,
  .page-about .format-caption h2,
  .page-about .update-caption h2,
  .page-about .searchway-caption h2 {
    font-size: 32px;
  }

  .page-about .scale-caption p,
  .page-about .dimension-caption p,
  .page-about .format-caption p,
  .page-about .update-caption p,
  .page-about .searchway-caption p {
    font-size: 15px;
  }

  .page-about .scale-stats {
    grid-column: 1 / -1;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
  }

  .page-about .scale-stat {
    padding: 20px;
    min-height: 110px;
  }

  .page-about .scale-stat__num {
    font-size: 44px;
  }

  .page-about .scale-stat__label {
    font-size: 13px;
  }

  .page-about .scale-chart-block {
    padding: 18px;
  }

  .page-about .scale-region {
    padding: 22px 18px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-about .region-row {
    gap: 14px;
    font-size: 14px;
  }

  .page-about .dimension-caption {
    padding-top: 56px;
  }

  .page-about .dimension-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 0 40px;
  }

  .page-about .dim-group {
    padding: 20px;
  }

  .page-about .dim-group--region {
    grid-row: span 2;
  }

  .page-about .dim-group--region .dim-group__tiles {
    flex-direction: column;
  }

  .page-about .dim-group--region .dim-tile--lg {
    flex: none;
  }

  .page-about .dim-tile--lg {
    padding: 16px;
  }

  .page-about .dim-tile__num {
    font-size: 30px;
  }

  .page-about .dim-tile--sm {
    font-size: 14px;
    padding: 10px 14px;
  }

  .page-about .dimension-structure {
    padding: 24px 40px 56px;
  }

  .page-about .format-caption {
    padding-top: 56px;
  }

  .page-about .format-table-wrap {
    padding: 0 40px 56px;
  }

  .page-about .format-table th,
  .page-about .format-table td {
    padding: 14px 18px;
  }

  .page-about .update-caption {
    padding-top: 56px;
  }

  .page-about .update-flow {
    grid-template-columns: 1fr auto 1fr auto 1fr;
    align-items: stretch;
    gap: 0;
    padding: 0 40px;
  }

  .page-about .update-node__arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    font-weight: 700;
    color: var(--about-orange);
    padding: 0 14px;
  }

  .page-about .update-node {
    padding: 22px;
  }

  .page-about .update-loop-img {
    padding: 26px 40px 56px;
  }

  .page-about .searchway-caption {
    padding-top: 56px;
  }

  .page-about .alphabet-index {
    padding: 0 40px;
    gap: 8px;
  }

  .page-about .alphabet-index__item {
    min-width: 40px;
    height: 40px;
    font-size: 14px;
  }

  .page-about .searchway-links {
    padding: 28px 40px 56px;
    gap: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about a,
  .page-about .dim-tile,
  .page-about .alphabet-index__item {
    transition: none;
  }
}