.ai-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
  background-image:
    repeating-linear-gradient(to right, var(--color-cream-grid) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(to bottom, var(--color-cream-grid-soft) 0 1px, transparent 1px 84px),
    radial-gradient(circle at 18% 28%, var(--color-highlight), transparent 34%);
}

.ai-hero-grid {
  display: grid;
  min-height: calc(100svh - var(--header-height));
  grid-template-columns: minmax(0, 0.94fr) minmax(420px, 1.06fr);
  gap: 58px;
  align-items: center;
  padding-top: 74px;
  padding-bottom: 74px;
}

.ai-hero-copy {
  position: relative;
  z-index: 2;
}

.ai-hero-copy .badge {
  margin-bottom: 18px;
}

.ai-hero-copy h1 {
  max-width: 11em;
}

.ai-hero-lead {
  max-width: 40em;
  margin-bottom: 28px;
  color: var(--color-muted);
  font-size: 18px;
  line-height: 1.72;
}

.ai-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.ai-signup-note {
  margin: 15px 0 0;
  color: var(--color-muted);
  font-size: 13px;
}

.ai-route-board {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.ai-route-board::before {
  position: absolute;
  top: -90px;
  right: -72px;
  width: 240px;
  height: 240px;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  opacity: 0.18;
  content: "";
  pointer-events: none;
}

.ai-board-head,
.ai-board-foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 20px;
  color: var(--color-muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.ai-board-head {
  border-bottom: 1px solid var(--color-border);
}

.ai-board-foot {
  flex-wrap: wrap;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
}

.ai-board-status {
  color: var(--color-success);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.ai-route-svg {
  display: block;
  width: 100%;
  color: var(--color-cream);
}

.ai-grid-fill {
  fill: url("#ai-grid");
}

.ai-grid-line {
  fill: none;
  stroke: var(--color-cream);
  stroke-opacity: 0.08;
  stroke-width: 1;
}

.ai-route-main,
.ai-route-backup,
.ai-route-branch {
  fill: none;
  stroke-linecap: round;
}

.ai-route-main {
  stroke: var(--color-cream);
  stroke-opacity: 0.86;
  stroke-width: 2;
}

.ai-route-backup,
.ai-route-branch {
  stroke: var(--color-cream);
  stroke-dasharray: 5 7;
  stroke-opacity: 0.34;
  stroke-width: 1.2;
}

.ai-node-ring {
  fill: var(--color-panel);
  stroke: var(--color-accent);
  stroke-opacity: 0.72;
  stroke-width: 1.5;
}

.ai-node-core {
  fill: var(--color-accent);
}

.ai-route-label {
  fill: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.ai-article {
  overflow-x: clip;
}

.ai-section-heading {
  max-width: 760px;
  margin-bottom: 40px;
}

.ai-condition-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.ai-condition-card {
  min-width: 0;
  padding: clamp(24px, 4vw, 42px);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.ai-condition-card:nth-child(2),
.ai-condition-card:nth-child(3) {
  background: var(--color-panel-raised);
}

.ai-condition-mark {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--color-accent);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.ai-condition-card h3 {
  font-size: 22px;
}

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

.ai-table-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.ai-table-notes p {
  margin: 0;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-translucent);
  color: var(--color-muted);
}

.ai-prose-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.65fr) minmax(0, 1.35fr);
  gap: 64px;
  align-items: start;
}

.ai-prose h3:first-child {
  margin-top: 0;
}

.ai-prose h3 {
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
}

.ai-compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.ai-compare-panel {
  display: flex;
  flex-direction: column;
}

.ai-compare-panel .tag {
  align-self: flex-start;
  margin-bottom: 20px;
}

.ai-compare-panel p,
.ai-compare-panel li {
  color: var(--color-muted);
}

.ai-compare-panel ul {
  margin-bottom: 0;
}

.ai-workflow {
  border-top: 1px solid var(--color-border);
}

.ai-workflow-row {
  display: grid;
  grid-template-columns: minmax(190px, 0.42fr) minmax(0, 1.58fr);
  gap: 40px;
  padding-top: 38px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--color-border);
}

.ai-workflow-label {
  align-self: start;
}

.ai-workflow-label .mono {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--color-accent);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.ai-workflow-label h3 {
  margin-bottom: 0;
}

.ai-workflow-copy {
  color: var(--color-muted);
}

.ai-workflow-copy > :last-child {
  margin-bottom: 0;
}

.ai-workflow-copy pre {
  margin-bottom: 18px;
}

.ai-failure-list {
  max-width: 920px;
}

.ai-selection {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: end;
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background:
    linear-gradient(125deg, var(--color-panel-raised), var(--color-panel)),
    var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.ai-selection-copy {
  max-width: 780px;
}

.ai-selection-copy p {
  color: var(--color-muted);
}

.ai-selection-copy p:last-child {
  margin-bottom: 0;
}

.ai-selection-actions {
  display: grid;
  gap: 12px;
  min-width: 190px;
}

@media (max-width: 1000px) {
  .ai-hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .ai-route-board {
    max-width: 760px;
  }

  .ai-prose-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .ai-selection {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .ai-selection-actions {
    display: flex;
    min-width: 0;
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .ai-hero-grid {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  .ai-hero-lead {
    font-size: 16px;
  }

  .ai-route-label {
    display: none;
  }

  .ai-condition-grid,
  .ai-compare-grid,
  .ai-table-notes {
    grid-template-columns: 1fr;
  }

  .ai-condition-card:nth-child(2),
  .ai-condition-card:nth-child(3) {
    background: var(--color-panel);
  }

  .ai-condition-card:nth-child(even) {
    background: var(--color-panel-raised);
  }

  .ai-workflow-row {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .ai-selection-actions {
    display: grid;
    width: 100%;
  }
}

@media (max-width: 520px) {
  .ai-board-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .ai-board-foot {
    justify-content: flex-start;
  }

  .ai-route-svg {
    min-height: 250px;
  }

  .ai-selection {
    padding: 24px;
  }
}