.page-about {
  --about-border: 3px solid #333333;
  --about-shadow: 6px 6px 0 #333333;
}
.page-about .split-grid {
  display: grid;
  gap: 24px;
}
.page-about .split-grid__main {
  min-width: 0;
}
.page-about .about-hero {
  padding: 28px 0 40px;
}
.page-about .about-hero__top {
  display: grid;
  gap: 24px;
}
.page-about .about-hero__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-red);
  margin: 0 0 8px;
}
.page-about .about-hero__lede {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  margin: 0;
  max-width: 62ch;
}
.page-about .about-hero__lede strong {
  background: var(--bg-yellow);
  padding: 0 4px;
  font-weight: 800;
}
.page-about .about-hero__metrics {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.page-about .about-hero__metric {
  border: var(--about-border);
  background: var(--white);
  box-shadow: 4px 4px 0 var(--line);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-about .about-hero__metric .metric-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}
.page-about .about-hero__metric .metric-label {
  font-size: 12px;
  color: #555555;
}
.page-about .about-hero__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: var(--about-border);
  box-shadow: var(--about-shadow);
  margin-top: 28px;
}
.page-about .about-scope {
  background: var(--bg-yellow);
  padding: 36px 0 42px;
}
.page-about .about-tax {
  background: var(--bg-pink);
  padding: 36px 0 42px;
}
.page-about .about-flow {
  background: var(--bg-cream);
  padding: 40px 0 48px;
}
.page-about .about-find {
  background: var(--bg-orange);
  padding: 36px 0 42px;
}
.page-about .section-head {
  display: grid;
  gap: 6px;
  margin-bottom: 22px;
}
.page-about .section-head p {
  margin: 0;
  max-width: 72ch;
}
.page-about .split-grid__note h3,
.page-about .about-flow__version h3,
.page-about .about-find__term h3,
.page-about .about-find__kw h3 {
  font-size: 17px;
  font-weight: 800;
  margin: 0 0 10px;
}
.page-about .split-grid__note p {
  font-size: 13px;
  line-height: 1.7;
  margin: 0 0 10px;
}
.page-about .about-note {
  border: 2px solid var(--line);
  background: var(--bg-cream);
  margin: 12px 0;
}
.page-about .about-note summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 12px;
  font-weight: 800;
  font-size: 14px;
}
.page-about .about-note summary::-webkit-details-marker {
  display: none;
}
.page-about .about-note[open] summary {
  border-bottom: 1px solid var(--line);
}
.page-about .about-note p {
  margin: 0;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.65;
}
.page-about .about-scope__link {
  margin: 16px 0 0;
}
.page-about .about-scope__link .btn {
  border: 2px solid var(--line);
  box-shadow: 4px 4px 0 var(--line);
}
.page-about .about-scope__grid {
  grid-template-columns: repeat(2, 1fr);
}
.page-about .about-scope__grid .idx-card {
  border: var(--about-border);
  box-shadow: 5px 5px 0 var(--line);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}
.page-about .about-scope__grid .idx-card h4 {
  margin: 8px 0 2px;
}
.page-about .about-scope__num {
  font-family: var(--font-mono);
  font-size: 46px;
  font-weight: 700;
  line-height: 1;
  margin: 10px 0 4px;
}
.page-about .about-scope__desc {
  font-size: 13px;
  line-height: 1.5;
  margin: 0 0 8px;
}
.page-about .about-tree {
  position: relative;
  margin-top: 4px;
}
.page-about .about-tree::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--line);
}
.page-about .about-tree__item {
  position: relative;
  margin: 0 0 14px 30px;
}
.page-about .about-tree__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 30px;
  width: 30px;
  height: 2px;
  background: var(--line);
}
.page-about .about-tree__item summary {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  cursor: pointer;
  background: var(--white);
  border: var(--about-border);
  box-shadow: 4px 4px 0 var(--line);
  padding: 12px 14px;
}
.page-about .about-tree__item summary::-webkit-details-marker {
  display: none;
}
.page-about .about-tree__item[open] summary {
  margin-bottom: 12px;
}
.page-about .about-tree__rank {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  background: var(--accent-red);
  color: var(--white);
  padding: 3px 7px;
  line-height: 1.2;
}
.page-about .about-tree__name {
  font-weight: 800;
  font-size: 16px;
}
.page-about .about-tree__count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  background: var(--bg-cream);
  border: 1px solid var(--line);
  padding: 2px 8px;
}
.page-about .about-tree__sub {
  margin-left: 20px;
  padding: 12px 14px 14px;
  border-left: 3px solid var(--line);
  background: rgba(255, 248, 231, .8);
}
.page-about .about-tree__sub .tag-cluster {
  margin: 0;
}
.page-about .about-tree__item:nth-child(4n+2) .about-tree__sub {
  background: rgba(152, 255, 152, .35);
}
.page-about .about-tree__item:nth-child(4n+3) .about-tree__sub {
  background: rgba(0, 191, 255, .15);
}
.page-about .about-tree__item:nth-child(4n+4) .about-tree__sub {
  background: rgba(218, 112, 214, .12);
}
.page-about .about-tree__tert {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #444444;
}
.page-about .about-tree__art {
  border: var(--about-border);
  box-shadow: var(--about-shadow);
  background: var(--white);
  padding: 8px;
  transform: rotate(1deg);
  max-width: 300px;
  margin-top: 18px;
  box-sizing: border-box;
}
.page-about .about-tree__art img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}
.page-about .about-tax__note {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  margin: 14px 0 0;
  color: #333333;
}
.page-about .about-flow__steps {
  display: grid;
  gap: 30px;
  margin-top: 20px;
}
.page-about .flow-card {
  position: relative;
  background: var(--white);
  border: var(--about-border);
  box-shadow: var(--about-shadow);
  padding: 30px 16px 18px;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 2px 12px;
}
.page-about .flow-card img {
  grid-column: 1;
  grid-row: 1 / span 2;
  display: block;
  width: 64px;
  height: 64px;
  border: 2px solid var(--line);
  background: var(--bg-cream);
  box-sizing: border-box;
  object-fit: cover;
  transform: rotate(-1deg);
}
.page-about .flow-card h3 {
  grid-column: 2;
  grid-row: 1;
  font-size: 18px;
  font-weight: 800;
  margin: 0;
}
.page-about .flow-card p {
  grid-column: 2;
  grid-row: 2;
  font-size: 13px;
  line-height: 1.6;
  margin: 0;
}
.page-about .flow-card .step-no {
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-blue);
}
.page-about .flow-card::after {
  content: "↓";
  position: absolute;
  left: 50%;
  bottom: -29px;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent-red);
  background: var(--bg-cream);
  line-height: 1;
  padding: 2px 8px;
  z-index: 2;
}
.page-about .flow-card:last-child::after {
  display: none;
}
.page-about .about-flow__meta {
  margin-top: 38px;
  display: grid;
  gap: 28px;
}
.page-about .about-flow__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.page-about .about-flow__stat {
  border: var(--about-border);
  background: var(--bg-yellow);
  box-shadow: 4px 4px 0 var(--line);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-flow__stat .metric-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.1;
}
.page-about .about-flow__stat .metric-label {
  font-size: 12px;
  color: #444444;
}
.page-about .about-flow__version {
  background: var(--white);
  border: var(--about-border);
  box-shadow: var(--about-shadow);
  padding: 16px;
  overflow-x: auto;
}
.page-about .about-flow__version h3 {
  margin-bottom: 12px;
}
.page-about .cmp-table {
  width: 100%;
  min-width: 360px;
  border-collapse: collapse;
  background: var(--white);
}
.page-about .cmp-table th,
.page-about .cmp-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  font-size: 13px;
}
.page-about .cmp-table th {
  background: var(--bg-cream);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
}
.page-about .cmp-table td:first-child {
  font-family: var(--font-mono);
  font-weight: 700;
}
.page-about .about-flow__link {
  margin: 14px 0 0;
  font-weight: 700;
}
.page-about .about-flow__link a {
  color: var(--accent-blue);
  text-decoration: underline;
}
.page-about .about-find .section-title,
.page-about .about-find .section-head p {
  color: var(--white);
}
.page-about .about-find__grid {
  display: grid;
  gap: 24px;
  margin-top: 18px;
}
.page-about .about-find__term,
.page-about .about-find__kw {
  background: var(--white);
  border: var(--about-border);
  box-shadow: var(--about-shadow);
  padding: 20px 18px;
}
.page-about .about-find__term h3,
.page-about .about-find__kw h3 {
  margin-bottom: 16px;
  border-bottom: 3px solid var(--line);
  padding-bottom: 8px;
}
.page-about .about-find .tile-board {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.page-about .about-find .tile {
  min-height: 72px;
  border: 2px solid var(--line);
  box-shadow: 3px 3px 0 var(--line);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 10px;
  font-weight: 800;
  font-size: 15px;
}
.page-about .about-find .label-tag {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  background: var(--line);
  color: var(--white);
  padding: 2px 6px;
}
.page-about .about-find .tag-cluster {
  margin: 0;
}
.page-about .about-find .tag {
  font-size: 13px;
}
.page-about .about-find__link {
  margin: 18px 0 0;
  font-weight: 700;
}
.page-about .about-find__link a {
  color: var(--accent-red);
  text-decoration: underline;
}
@media (min-width: 720px) {
  .page-about .about-hero__metrics {
    grid-template-columns: repeat(4, 118px);
  }
  .page-about .about-scope__grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .about-flow__meta {
    grid-template-columns: 320px minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-find__grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 40px 0 48px;
  }
  .page-about .about-hero__top {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 36px;
    align-items: center;
  }
  .page-about .about-scope .split-grid {
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
  .page-about .about-tax .split-grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
    align-items: start;
  }
  .page-about .about-tree__art {
    margin-top: 0;
    position: sticky;
    top: 20px;
  }
  .page-about .about-flow__steps {
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
  }
  .page-about .flow-card::after {
    content: "→";
    left: auto;
    right: -27px;
    bottom: auto;
    top: 50%;
    transform: translateY(-50%);
  }
  .page-about .flow-card:last-child::after {
    display: none;
  }
}