.ai-hero {
  position: relative;
  display: flex;
  min-height: calc(100svh - var(--header-height));
  align-items: center;
  overflow-x: clip;
  padding-top: clamp(54px, 7vw, 96px);
  padding-bottom: clamp(64px, 8vw, 112px);
  border-bottom: 1px solid var(--color-hairline);
}

.ai-hero::before {
  position: absolute;
  top: 50%;
  right: -18%;
  width: min(74vw, 940px);
  aspect-ratio: 1;
  border: 1px solid var(--color-ring-soft);
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-glow), transparent 58%);
  content: "";
  opacity: .62;
  pointer-events: none;
  transform: translateY(-50%);
}

.ai-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(420px, 1.08fr);
  gap: clamp(36px, 6vw, 86px);
  align-items: center;
}

.ai-hero-copy {
  min-width: 0;
}

.ai-hero-copy .eyebrow {
  margin-bottom: 24px;
}

.ai-hero-copy h1 {
  max-width: 660px;
}

.ai-hero-copy .button-row {
  margin-bottom: 25px;
}

.ai-hero-lede {
  max-width: 650px;
  color: var(--color-muted);
  font-size: 18px;
}

.ai-fact-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: clip;
  margin: 34px 0 0;
  padding: 1px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-border);
  list-style: none;
}

.ai-fact-list li {
  display: grid;
  min-width: 0;
  gap: 3px;
  padding: 18px;
  background: var(--color-panel);
}

.ai-fact-list strong {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

.ai-fact-list span {
  color: var(--color-muted);
  font-size: 13px;
}

.ai-route-visual {
  min-width: 0;
}

.ai-route-visual svg {
  width: 100%;
  filter: drop-shadow(0 26px 45px var(--color-shadow));
}

.ai-orbit {
  fill: none;
  stroke: var(--color-ring);
}

.ai-orbit--outer {
  stroke-dasharray: 3 12;
  opacity: .78;
}

.ai-orbit--inner {
  stroke: var(--color-ring-soft);
  stroke-dasharray: 1 8;
}

.ai-route-line {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-width: 2;
  opacity: .7;
}

.ai-route-line--soft {
  opacity: .38;
}

.ai-core-halo {
  fill: var(--color-accent);
  opacity: .1;
}

.ai-core-shield {
  fill: var(--color-panel-raised);
  stroke: var(--color-accent);
  stroke-linejoin: round;
  stroke-width: 2;
}

.ai-core-check {
  fill: none;
  stroke: var(--color-text);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 5;
}

.ai-tool-plate {
  fill: var(--color-panel);
  stroke: var(--color-border);
}

.ai-tool-dot {
  fill: var(--color-accent);
}

.ai-tool-label {
  fill: var(--color-text);
  font-family: var(--font-body);
  font-size: 13px;
}

.ai-visual-caption {
  margin: -10px 0 0;
  color: var(--color-muted);
  text-align: center;
  font-size: 12px;
  letter-spacing: .05em;
}

.ai-principle-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.ai-principle {
  min-height: 290px;
}

.ai-principle-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  margin-bottom: 28px;
  border: 1px solid var(--color-accent-dark);
  border-radius: var(--radius-pill);
  color: var(--color-accent);
  font-family: var(--font-display);
  font-size: 20px;
}

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

.ai-table-section {
  border-top: 1px solid var(--color-hairline);
  border-bottom: 1px solid var(--color-hairline);
  background: var(--color-panel);
}

.ai-table-section .table-scroll {
  background: var(--color-bg);
}

.ai-tool-notes {
  display: grid;
  gap: 22px;
}

.ai-tool-note {
  display: grid;
  grid-template-columns: minmax(210px, .58fr) minmax(0, 1.42fr);
  gap: clamp(26px, 5vw, 72px);
  align-items: start;
}

.ai-tool-heading {
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.ai-tool-heading .badge {
  margin-bottom: 20px;
}

.ai-tool-heading h3 {
  margin-bottom: 0;
}

.ai-tool-body {
  min-width: 0;
  color: var(--color-muted);
}

.ai-tool-body p:last-child {
  margin-bottom: 0;
}

.ai-split {
  display: grid;
  grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr);
  gap: clamp(38px, 7vw, 100px);
  align-items: start;
}

.ai-split-head {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  margin-bottom: 0;
}

.ai-comparison {
  display: grid;
  gap: 22px;
}

.ai-check-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  color: var(--color-muted);
  list-style: none;
}

.ai-check-list li {
  position: relative;
  padding-left: 25px;
}

.ai-check-list li::before {
  position: absolute;
  top: 2px;
  left: 0;
  color: var(--color-success);
  content: "✓";
}

.ai-workflow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
}

.ai-workflow-step {
  min-width: 0;
  padding: clamp(24px, 3vw, 34px);
}

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

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

.ai-step-label {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
}

.ai-selection {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(28px, 6vw, 78px);
  align-items: center;
  border-color: var(--color-accent-dark);
  background: var(--color-panel-raised);
  box-shadow: 0 22px 70px var(--color-accent-glow);
}

.ai-selection-copy {
  max-width: 830px;
}

.ai-selection-copy .eyebrow {
  margin-bottom: 24px;
}

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

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

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

@media (max-width: 1040px) {
  .ai-hero {
    min-height: auto;
  }

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

  .ai-route-visual {
    width: min(680px, 100%);
    margin-inline: auto;
  }

  .ai-workflow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ai-workflow-step + .ai-workflow-step {
    border-left: 0;
  }

  .ai-workflow-step:nth-child(even) {
    border-left: 1px solid var(--color-border);
  }

  .ai-workflow-step:nth-child(n + 3) {
    border-top: 1px solid var(--color-border);
  }
}

@media (max-width: 820px) {
  .ai-tool-note,
  .ai-split,
  .ai-selection {
    grid-template-columns: 1fr;
  }

  .ai-tool-heading,
  .ai-split-head {
    position: static;
  }

  .ai-tool-note {
    gap: 24px;
  }

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

@media (max-width: 640px) {
  .ai-hero {
    padding-top: 44px;
  }

  .ai-hero::before {
    right: -65%;
    width: 150vw;
  }

  .ai-hero-grid {
    gap: 34px;
  }

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

  .ai-fact-list,
  .ai-principle-grid,
  .ai-workflow {
    grid-template-columns: 1fr;
  }

  .ai-route-visual {
    margin-top: 4px;
  }

  .ai-visual-caption {
    margin-top: 4px;
  }

  .ai-principle {
    min-height: 0;
  }

  .ai-workflow-step:nth-child(even) {
    border-left: 0;
  }

  .ai-workflow-step + .ai-workflow-step,
  .ai-workflow-step:nth-child(n + 3) {
    border-top: 1px solid var(--color-border);
  }

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