:root {
  --nodes-hero-min-height: 690px;
  --nodes-copy-max: 740px;
  --nodes-board-max: 930px;
  --nodes-table-min: 760px;
  --nodes-icon-size: 48px;
  --nodes-type-mark-size: 44px;
  --nodes-line-width: 2px;
  --nodes-orbit-size-large: 620px;
  --nodes-orbit-size-small: 390px;
  --nodes-orbit-opacity: 0.28;
  --nodes-decor-opacity: 0.72;
  --nodes-panel-gap: 22px;
}

.nodes-hero {
  position: relative;
  min-height: var(--nodes-hero-min-height);
  overflow: hidden;
  border-bottom: var(--border-thin) solid var(--color-line-faint);
  background:
    radial-gradient(circle at 18% 22%, var(--color-pink-wash), transparent 34%),
    radial-gradient(circle at 82% 36%, var(--color-cyan-wash), transparent 38%),
    linear-gradient(180deg, var(--color-bg), var(--color-panel));
}

.nodes-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--color-line-faint) var(--border-thin), transparent var(--border-thin)),
    linear-gradient(90deg, var(--color-line-faint) var(--border-thin), transparent var(--border-thin));
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, transparent, var(--color-bg), transparent);
  opacity: var(--nodes-orbit-opacity);
}

.nodes-hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: var(--nodes-hero-min-height);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: 76px;
  padding-bottom: 60px;
  text-align: center;
}

.nodes-hero h1 {
  margin-top: 20px;
  margin-bottom: 18px;
}

.nodes-title-break {
  white-space: nowrap;
}

.nodes-hero-copy {
  max-width: var(--nodes-copy-max);
  margin-right: auto;
  margin-bottom: 0;
  margin-left: auto;
  color: var(--color-muted);
  font-size: 18px;
  line-height: 1.9;
}

.nodes-fact-row {
  display: flex;
  max-width: 100%;
  align-items: stretch;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.nodes-fact-row > span {
  display: grid;
  min-width: 150px;
  border: var(--border-thin) solid var(--color-line-soft);
  border-radius: var(--radius-sm);
  background: var(--color-panel-soft);
  padding: 10px 16px;
  box-shadow: var(--shadow-cyan);
}

.nodes-fact-row strong {
  color: var(--color-warning);
  font-family: var(--font-mono);
  font-size: 14px;
}

.nodes-fact-row small {
  font-size: 11px;
}

.nodes-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 24px;
}

.nodes-orbit-board {
  position: relative;
  width: min(100%, var(--nodes-board-max));
  height: 190px;
  margin-top: 34px;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-panel);
  background: var(--color-panel-glass);
  box-shadow: var(--shadow-cyan);
}

.nodes-orbit-board svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.nodes-orbit-board path {
  fill: none;
  stroke: var(--color-line);
  stroke-dasharray: 8 9;
  stroke-width: var(--nodes-line-width);
}

.nodes-orbit-board circle {
  fill: var(--color-warning);
  stroke: var(--color-bg);
  stroke-width: var(--nodes-line-width);
}

.nodes-orbit-core,
.nodes-region {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel-strong);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  box-shadow: var(--shadow-cyan);
}

.nodes-orbit-core {
  top: 50%;
  left: 50%;
  width: 56px;
  height: 56px;
  border-color: var(--color-accent);
  color: var(--color-warning);
  font-size: 16px;
  font-weight: 900;
  transform: translate(-50%, -50%);
}

.nodes-region {
  min-width: 70px;
  min-height: 32px;
  padding: 4px 10px;
}

.nodes-region-ap {
  top: 22px;
  left: 8%;
}

.nodes-region-na {
  right: 8%;
  bottom: 24px;
}

.nodes-region-eu {
  right: 19%;
  top: 24px;
}

.nodes-region-gl {
  left: 17%;
  bottom: 22px;
}

.nodes-orbit {
  position: absolute;
  border: var(--border-thin) dashed var(--color-line-soft);
  border-radius: var(--radius-pill);
  pointer-events: none;
}

.nodes-orbit-a {
  top: -250px;
  right: -210px;
  width: var(--nodes-orbit-size-large);
  height: var(--nodes-orbit-size-large);
}

.nodes-orbit-b {
  bottom: -210px;
  left: -160px;
  width: var(--nodes-orbit-size-small);
  height: var(--nodes-orbit-size-small);
  border-color: var(--color-pink-glow);
}

.nodes-toc-wrap {
  position: relative;
  z-index: 20;
  margin-top: 24px;
}

.nodes-section-alt {
  border-top: var(--border-thin) solid var(--color-line-faint);
  border-bottom: var(--border-thin) solid var(--color-line-faint);
  background:
    linear-gradient(135deg, var(--color-cyan-wash), transparent 38%),
    var(--color-panel-soft);
}

.nodes-table {
  min-width: var(--nodes-table-min);
}

.nodes-table .tag {
  white-space: nowrap;
}

.nodes-support,
.nodes-support-test {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
}

.nodes-support::before,
.nodes-support-test::before {
  content: "";
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
}

.nodes-support {
  color: var(--color-success);
}

.nodes-support::before {
  background: var(--color-success);
}

.nodes-support-test {
  color: var(--color-warning);
}

.nodes-support-test::before {
  background: var(--color-warning);
}

.nodes-reading-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--nodes-panel-gap);
  margin-top: 28px;
}

.nodes-reading-grid .card {
  border-color: var(--color-line-soft);
}

.nodes-reading-grid p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.nodes-card-code {
  display: block;
  margin-bottom: 10px;
  color: var(--color-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.nodes-type-layout {
  display: grid;
  gap: var(--nodes-panel-gap);
}

.nodes-type-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(210px, 0.72fr) minmax(0, 1fr) minmax(220px, 0.7fr);
  gap: 28px;
  align-items: start;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  padding: clamp(22px, 4vw, 34px);
  box-shadow: var(--shadow-cyan);
}

.nodes-type-card:nth-child(even) {
  background: var(--color-panel-strong);
}

.nodes-type-card > p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.nodes-type-head {
  display: flex;
  align-items: flex-start;
  gap: 15px;
}

.nodes-type-head h3 {
  margin-top: 9px;
  margin-bottom: 0;
}

.nodes-type-index {
  display: inline-flex;
  width: var(--nodes-type-mark-size);
  height: var(--nodes-type-mark-size);
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border: var(--border-thin) solid var(--color-warning);
  border-radius: var(--radius-sm);
  color: var(--color-warning);
  font-family: var(--font-mono);
  font-weight: 900;
}

.nodes-type-facts {
  display: grid;
  gap: 12px;
  margin: 0;
}

.nodes-type-facts div {
  border-left: 3px solid var(--color-warning);
  background: var(--color-cyan-wash);
  padding: 9px 12px;
}

.nodes-type-facts dt {
  color: var(--color-line);
  font-family: var(--font-mono);
  font-size: 11px;
}

.nodes-type-facts dd {
  margin: 3px 0 0;
  color: var(--color-text);
  font-size: 14px;
}

.nodes-mission-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--nodes-panel-gap);
}

.nodes-mission-card {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  border: var(--border-thin) solid var(--color-line-soft);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  padding: 24px;
  box-shadow: var(--shadow-cyan);
}

.nodes-mission-card:last-child {
  grid-column: 1 / -1;
  max-width: calc(50% - var(--nodes-panel-gap) / 2);
  justify-self: center;
}

.nodes-mission-mark {
  display: inline-flex;
  width: var(--nodes-icon-size);
  height: var(--nodes-icon-size);
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  color: var(--color-warning);
  background: var(--color-panel-strong);
}

.nodes-mission-mark svg {
  width: 26px;
  height: 26px;
  stroke-width: 1.7;
}

.nodes-mission-card h3 {
  margin-bottom: 9px;
  font-size: 22px;
}

.nodes-mission-card p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.nodes-method-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
}

.nodes-method-intro {
  position: sticky;
  top: var(--toc-offset);
}

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

.nodes-test-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: node-test;
}

.nodes-test-list li {
  position: relative;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-panel);
  background: var(--color-panel);
  padding: 22px 22px 22px 72px;
  box-shadow: var(--shadow-cyan);
  counter-increment: node-test;
}

.nodes-test-list li::before {
  content: counter(node-test);
  position: absolute;
  top: 22px;
  left: 20px;
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border: var(--border-thin) solid var(--color-warning);
  border-radius: var(--radius-sm);
  color: var(--color-warning);
  font-family: var(--font-mono);
  font-weight: 900;
}

.nodes-test-list strong {
  display: block;
  margin-bottom: 7px;
  font-size: 18px;
}

.nodes-test-list p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.nodes-diagnosis {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--nodes-panel-gap);
}

.nodes-diagnosis .panel {
  border-color: var(--color-line-soft);
}

.nodes-diagnosis h3 {
  font-size: 22px;
}

.nodes-diagnosis p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.nodes-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 34px;
  margin-top: 34px;
  background:
    linear-gradient(120deg, var(--color-pink-wash), transparent),
    var(--color-panel-strong);
}

.nodes-summary h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 40px);
}

.nodes-summary p {
  color: var(--color-muted);
}

.nodes-summary p:last-child {
  margin-bottom: 0;
}

.nodes-summary-actions {
  display: grid;
  min-width: 170px;
  gap: 12px;
}

@media (max-width: 980px) {
  .nodes-type-card {
    grid-template-columns: minmax(190px, 0.8fr) minmax(0, 1.2fr);
  }

  .nodes-type-facts {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .nodes-method-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .nodes-method-intro {
    position: static;
  }
}

@media (max-width: 768px) {
  .nodes-hero {
    min-height: auto;
  }

  .nodes-hero-inner {
    min-height: auto;
    padding-top: 48px;
    padding-bottom: 42px;
  }

  .nodes-hero-copy {
    font-size: 16px;
  }

  .nodes-fact-row {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nodes-fact-row > span {
    min-width: 0;
  }

  .nodes-hero-actions {
    width: 100%;
    flex-direction: column;
  }

  .nodes-hero-actions .btn {
    width: 100%;
    max-width: 340px;
  }

  .nodes-orbit-board {
    height: 150px;
  }

  .nodes-orbit-board svg {
    opacity: var(--nodes-decor-opacity);
  }

  .nodes-region {
    min-width: 58px;
    min-height: 28px;
    font-size: 9px;
  }

  .nodes-orbit-a,
  .nodes-orbit-b {
    display: none;
  }

  .nodes-reading-grid,
  .nodes-mission-grid,
  .nodes-diagnosis {
    grid-template-columns: minmax(0, 1fr);
  }

  .nodes-mission-card:last-child {
    grid-column: auto;
    max-width: none;
  }

  .nodes-type-card {
    grid-template-columns: minmax(0, 1fr);
  }

  .nodes-type-facts {
    grid-column: auto;
    grid-template-columns: minmax(0, 1fr);
  }

  .nodes-summary {
    grid-template-columns: minmax(0, 1fr);
  }

  .nodes-summary-actions {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .nodes-fact-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .nodes-orbit-board {
    height: 130px;
  }

  .nodes-orbit-core {
    width: 48px;
    height: 48px;
  }

  .nodes-region-eu,
  .nodes-region-gl {
    display: none;
  }

  .nodes-mission-card {
    flex-direction: column;
  }

  .nodes-test-list li {
    padding: 68px 18px 20px;
  }

  .nodes-test-list li::before {
    top: 18px;
    left: 18px;
  }
}