.labusage-layout a,
.labusage-hero a,
.labusage-chain a,
.labusage-mosaic a,
.labusage-ledger a,
.labusage-panels a,
.footer-links a {
  text-decoration: none;
}

.labusage-layout a:hover,
.labusage-hero a:hover,
.labusage-chain a:hover,
.labusage-mosaic a:hover,
.labusage-ledger a:hover,
.labusage-panels a:hover,
.footer-links a:hover {
  text-decoration: underline;
}

.labusage-hero,
.labusage-chain,
.labusage-mosaic,
.labusage-ledger,
.labusage-panels {
  margin-bottom: 18px;
}

.labusage-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.58fr) minmax(300px, 0.9fr);
  gap: 18px;
  align-items: stretch;
}

.labusage-hero-main,
.labusage-hero-side,
.chain-card,
.mosaic-card,
.ledger-card,
.panel-card {
  border-radius: 12px;
  background-color: #ffffff;
  border: 1px solid var(--color-border-subtle);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.05);
}

.labusage-hero-main {
  padding: 24px 24px 22px;
  background:
    linear-gradient(180deg, rgba(20, 57, 95, 0.08), rgba(20, 57, 95, 0)),
    #ffffff;
}

.labusage-kicker,
.signal-tile-label {
  display: block;
  margin: 0 0 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.labusage-hero-main h2,
.labusage-hero-side h3,
.chain-card h3,
.mosaic-card h2,
.ledger-card h3,
.panel-card h2 {
  color: var(--color-ink);
}

.labusage-hero-main h2 {
  margin: 0 0 12px;
  font-size: 2.04rem;
  line-height: 1.12;
}

.labusage-text,
.labusage-hero-side p,
.chain-card p,
.mosaic-card p,
.ledger-card p,
.panel-card p {
  margin: 0 0 14px;
  font-size: 0.98rem;
  line-height: 1.72;
  color: var(--color-muted);
}

.labusage-text:last-of-type,
.labusage-hero-side p:last-child,
.chain-card p:last-child,
.mosaic-card p:last-child,
.ledger-card p:last-child,
.panel-card p:last-child {
  margin-bottom: 0;
}

.labusage-hero-side {
  padding: 20px 18px;
}

.labusage-signal-stack {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.signal-tile {
  padding: 12px 12px 10px;
  border-radius: 10px;
  background-color: rgba(20, 57, 95, 0.05);
  border: 1px solid rgba(20, 57, 95, 0.12);
}

.labusage-chain .chain-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.chain-card {
  padding: 16px 16px 14px;
}

.chain-step {
  display: inline-flex;
  margin-bottom: 8px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.labusage-mosaic {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 18px;
}

.mosaic-card {
  padding: 20px 20px 18px;
}

.mosaic-card-wide {
  background:
    linear-gradient(180deg, rgba(20, 57, 95, 0.06), rgba(20, 57, 95, 0)),
    #ffffff;
}

.labusage-ledger .ledger-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.ledger-card {
  padding: 18px;
}

.labusage-panels {
  display: grid;
  grid-template-columns: 1.1fr 1fr 0.9fr;
  gap: 18px;
}

.panel-card {
  padding: 20px 20px 18px;
}

.panel-card-emphasis {
  background:
    linear-gradient(180deg, rgba(20, 57, 95, 0.07), rgba(20, 57, 95, 0)),
    #ffffff;
}

@media (max-width: 1200px) {
  .labusage-hero,
  .labusage-mosaic,
  .labusage-panels {
    grid-template-columns: minmax(0, 1fr);
  }

  .labusage-chain .chain-grid,
  .labusage-ledger .ledger-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .labusage-hero-main h2 {
    font-size: 1.82rem;
  }
}

@media (max-width: 620px) {
  .labusage-chain .chain-grid,
  .labusage-ledger .ledger-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .labusage-hero-main,
  .labusage-hero-side,
  .chain-card,
  .mosaic-card,
  .ledger-card,
  .panel-card {
    padding-left: 16px;
    padding-right: 16px;
  }
}