.nodes-hero {
  display: flex;
  min-height: calc(100svh - var(--header-height));
  align-items: center;
  padding-top: 54px;
  padding-bottom: 54px;
  overflow-x: clip;
}

.nodes-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
  gap: clamp(42px, 7vw, 96px);
  align-items: center;
}

.nodes-hero-copy h1 {
  max-width: 680px;
  margin-top: 25px;
}

.nodes-lead {
  max-width: 650px;
  margin-top: 26px;
  color: var(--color-muted);
  font-size: 17px;
  line-height: 1.85;
}

.nodes-lead strong {
  color: var(--color-text);
}

.nodes-hero-copy .button-row {
  margin-top: 32px;
}

.nodes-fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
}

.nodes-fact-row span {
  position: relative;
  padding-left: 13px;
}

.nodes-fact-row span::before {
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.route-ledger {
  min-width: 0;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-card);
  background: var(--color-panel);
}

.route-ledger-head,
.route-ledger-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.route-ledger-map {
  margin-block: 20px;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.route-ledger-map svg {
  width: 100%;
  height: auto;
}

.ledger-contour {
  fill: none;
  stroke: var(--color-border);
  stroke-width: 2;
  stroke-dasharray: 5 8;
}

.ledger-route {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 2;
}

.ledger-route-secondary {
  stroke-width: 1;
  stroke-dasharray: 7 7;
}

.ledger-node {
  fill: var(--color-bg);
  stroke: var(--color-accent);
  stroke-width: 2;
}

.route-ledger-foot {
  flex-wrap: wrap;
  justify-content: flex-start;
}

.route-ledger-foot span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.route-ledger-foot span::before {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.nodes-section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 0.65fr);
  gap: 46px;
  align-items: end;
  margin-bottom: 42px;
}

.nodes-section-head h2 {
  max-width: 700px;
  margin-top: 14px;
}

.nodes-section-head > p {
  margin: 0;
  color: var(--color-muted);
}

.section-code {
  color: var(--color-muted);
  font-size: 11px;
  letter-spacing: 0.09em;
}

.nodes-panel-section {
  background: var(--color-panel);
}

.route-method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.route-method {
  min-width: 0;
  padding: 34px;
  border-right: 1px solid var(--color-border);
}

.route-method:last-child {
  border-right: 0;
}

.route-method-code {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.route-method h3 {
  margin: 20px 0 18px;
  font-size: 27px;
}

.route-method p {
  color: var(--color-muted);
}

.use-case-list {
  border-top: 1px solid var(--color-border);
}

.use-case {
  display: grid;
  grid-template-columns: minmax(230px, 0.55fr) minmax(0, 1.45fr);
  gap: 48px;
  padding: 38px 0;
  border-bottom: 1px solid var(--color-border);
}

.use-case-label span {
  display: inline-flex;
  padding: 6px 11px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.use-case-label h3 {
  margin-top: 18px;
  font-size: 25px;
}

.use-case-copy {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
}

.use-case-copy p {
  margin: 0;
  color: var(--color-muted);
}

.testing-layout {
  display: grid;
  grid-template-columns: minmax(250px, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(48px, 8vw, 110px);
  align-items: start;
}

.testing-intro {
  position: sticky;
  top: 34px;
}

.testing-intro h2 {
  margin-top: 14px;
}

.testing-intro p {
  margin-top: 22px;
  color: var(--color-muted);
}

.testing-steps {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
  counter-reset: test-step;
}

.testing-steps li {
  position: relative;
  min-height: 108px;
  padding: 28px 0 28px 70px;
  border-bottom: 1px solid var(--color-border);
  counter-increment: test-step;
}

.testing-steps li::before {
  position: absolute;
  top: 30px;
  left: 0;
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  content: counter(test-step);
  font-family: var(--font-mono);
  font-size: 12px;
}

.testing-steps h3 {
  font-size: 21px;
}

.testing-steps p {
  margin: 10px 0 0;
  color: var(--color-muted);
}

#coverage-notes .section-code {
  display: block;
  margin-bottom: 18px;
}

#coverage-notes h2 {
  margin-top: 0;
}

#coverage-notes p {
  font-size: 16px;
  line-height: 1.9;
}

@media (max-width: 1050px) {
  .nodes-hero {
    min-height: auto;
  }

  .nodes-hero-grid {
    grid-template-columns: 1fr;
  }

  .route-ledger {
    max-width: 760px;
  }

  .route-method-grid {
    grid-template-columns: 1fr;
  }

  .route-method {
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .route-method:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 768px) {
  .nodes-hero {
    padding-top: 42px;
    padding-bottom: 64px;
  }

  .nodes-section-head {
    grid-template-columns: 1fr;
    gap: 20px;
    align-items: start;
  }

  .use-case {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .use-case-copy {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .testing-layout {
    grid-template-columns: 1fr;
  }

  .testing-intro {
    position: static;
  }
}

@media (max-width: 480px) {
  .route-ledger {
    padding: 18px;
  }

  .route-ledger-foot {
    gap: 10px 14px;
  }

  .route-method {
    padding: 28px 0;
  }

  .testing-steps li {
    padding-left: 58px;
  }

  .testing-steps li::before {
    width: 36px;
    height: 36px;
  }
}