.ai-hero {
  position: relative;
  padding-top: clamp(76px, 9vw, 124px);
  padding-bottom: clamp(76px, 9vw, 124px);
}

.ai-hero::before,
.ai-hero::after {
  position: absolute;
  z-index: 0;
  width: clamp(220px, 30vw, 430px);
  aspect-ratio: 1;
  border-radius: var(--radius-xl);
  content: "";
  opacity: 0.22;
  transform: rotate(24deg);
  pointer-events: none;
}

.ai-hero::before {
  top: 9%;
  right: -12%;
  background: var(--color-pink);
}

.ai-hero::after {
  bottom: -32%;
  left: -13%;
  background: var(--color-accent);
  opacity: 0.12;
}

.ai-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(40px, 7vw, 96px);
  align-items: center;
}

.ai-hero-copy h1 {
  max-width: 10em;
  margin: 18px 0 22px;
}

.ai-hero-lead {
  max-width: 43rem;
  margin-bottom: 30px;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: 1.8;
}

.ai-trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
}

.ai-route-board {
  position: relative;
  min-height: 480px;
  padding: clamp(24px, 4vw, 42px);
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.ai-route-board::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border-soft) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--color-border-soft) 1px, var(--color-transparent) 1px);
  background-size: 34px 34px;
  content: "";
  opacity: 0.34;
  pointer-events: none;
}

.ai-route-board::after {
  position: absolute;
  right: -48px;
  bottom: -56px;
  width: 180px;
  height: 180px;
  border-radius: var(--radius-xl);
  background: var(--color-coral);
  content: "";
  opacity: 0.18;
  transform: rotate(18deg);
}

.ai-board-top,
.ai-board-foot,
.ai-source-block,
.ai-route-chain,
.ai-tool-cloud {
  position: relative;
  z-index: 1;
}

.ai-board-top,
.ai-board-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.ai-board-state {
  color: var(--color-lime);
}

.ai-source-block {
  display: flex;
  width: fit-content;
  align-items: center;
  gap: 13px;
  margin: 52px auto 28px;
  padding: 14px 17px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-deep);
  box-shadow: var(--shadow-soft);
}

.ai-source-block strong,
.ai-source-block small {
  display: block;
  font-family: var(--font-mono);
}

.ai-source-block strong {
  font-size: 0.84rem;
}

.ai-source-block small {
  margin-top: 3px;
  color: var(--color-text-muted);
  font-size: 0.64rem;
}

.ai-square {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
}

.ai-square-lime {
  background: var(--color-lime);
}

.ai-route-chain {
  display: grid;
  max-width: 330px;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  margin: 0 auto 30px;
}

.ai-chain-cell {
  height: 12px;
  border-radius: var(--radius-sm);
  background: var(--color-panel-alt);
  box-shadow: var(--shadow-soft);
}

.ai-chain-cell-hot {
  background: var(--color-accent);
}

.ai-chain-cell-pink {
  background: var(--color-pink);
}

.ai-tool-cloud {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 11px;
}

.ai-tool-chip {
  display: grid;
  min-height: 68px;
  place-items: center;
  padding: 12px;
  border-radius: var(--radius-md);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 850;
  text-align: center;
  box-shadow: var(--shadow-soft);
}

.ai-tool-orange {
  background: var(--color-accent);
}

.ai-tool-coral {
  background: var(--color-coral);
}

.ai-tool-lime {
  background: var(--color-lime);
}

.ai-tool-pink {
  background: var(--color-pink);
}

.ai-board-foot {
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border-soft);
}

.ai-document {
  position: relative;
}

.ai-document > .wrap {
  padding-top: clamp(38px, 5vw, 64px);
}

.ai-section-heading {
  max-width: 52rem;
  margin-bottom: clamp(32px, 5vw, 58px);
}

.ai-section-heading h2 {
  margin: 14px 0 18px;
}

.ai-feature-stack {
  display: grid;
  gap: 24px;
}

.ai-feature-panel {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(28px, 6vw, 82px);
  align-items: center;
  padding: clamp(28px, 6vw, 72px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.ai-feature-panel:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.ai-feature-panel-reverse .ai-feature-visual {
  order: 2;
}

.ai-feature-panel-reverse .ai-feature-copy {
  order: 1;
}

.ai-feature-visual {
  position: relative;
  display: grid;
  min-height: 260px;
  place-items: center;
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-deep);
}

.ai-feature-visual::before {
  position: absolute;
  inset: 18px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  content: "";
}

.ai-pixel-label {
  position: absolute;
  top: 24px;
  left: 26px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.1em;
}

.ai-pixel-map {
  display: grid;
  width: min(76%, 230px);
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.ai-pixel-map i,
.ai-ip-blocks i {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  background: var(--color-panel-raised);
  box-shadow: var(--shadow-soft);
}

.ai-pixel-map .is-lit {
  background: var(--color-lime);
}

.ai-pixel-map .is-coral {
  background: var(--color-coral);
}

.ai-pixel-map .is-pink {
  background: var(--color-pink);
}

.ai-stream-line {
  display: flex;
  width: 74%;
  align-items: center;
  justify-content: space-between;
}

.ai-stream-line::before {
  position: absolute;
  right: 13%;
  left: 13%;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--color-border);
  content: "";
}

.ai-stream-line i {
  position: relative;
  z-index: 1;
  width: 22px;
  height: 22px;
  border: 5px solid var(--color-bg-deep);
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  box-shadow: var(--shadow-soft);
}

.ai-stream-line i:nth-child(2),
.ai-stream-line i:nth-child(5) {
  background: var(--color-pink);
}

.ai-stream-line i:nth-child(3) {
  background: var(--color-lime);
}

.ai-ip-blocks {
  display: grid;
  width: min(70%, 210px);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.ai-ip-blocks .is-alert {
  background: var(--color-coral);
  transform: translateY(-8px);
}

.ai-feature-copy {
  position: relative;
}

.ai-feature-copy h3 {
  margin: 18px 0 16px;
  font-size: clamp(1.6rem, 3vw, 2.35rem);
}

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

.ai-block-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: var(--radius-md);
  color: var(--color-ink);
  background: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 900;
}

.ai-block-mark-pink {
  background: var(--color-pink);
}

.ai-block-mark-coral {
  background: var(--color-coral);
}

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

.ai-tool-table th:first-child {
  white-space: nowrap;
}

.ai-split-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(38px, 7vw, 96px);
  align-items: start;
}

.ai-guidance-list {
  display: grid;
  gap: 18px;
}

.ai-guidance-list article {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

.ai-guidance-list h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.ai-guidance-list p {
  margin: 0;
  color: var(--color-text-muted);
}

.ai-guidance-dot {
  width: 15px;
  height: 15px;
  margin-top: 7px;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  box-shadow: var(--shadow-button);
}

.ai-guidance-dot-pink {
  background: var(--color-pink);
}

.ai-guidance-dot-coral {
  background: var(--color-coral);
}

.ai-compare-section {
  position: relative;
}

.ai-compare-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.ai-compare-card {
  padding: clamp(26px, 5vw, 48px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

.ai-compare-card-raised {
  background: var(--color-panel-raised);
}

.ai-compare-card h3 {
  margin: 20px 0 16px;
}

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

.ai-compare-card ul {
  display: grid;
  gap: 10px;
  margin-bottom: 0;
}

.ai-compare-tag {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  background: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 850;
}

.ai-compare-tag-lime {
  background: var(--color-lime);
}

.ai-code-note {
  margin-top: 22px;
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-deep);
  box-shadow: var(--shadow-soft);
}

.ai-code-note-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.ai-code-note-head span {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-sm);
  background: var(--color-coral);
}

.ai-code-note-head span:nth-child(2) {
  background: var(--color-warning);
}

.ai-code-note-head span:nth-child(3) {
  background: var(--color-lime);
}

.ai-code-note-head strong {
  margin-left: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.ai-code-note pre {
  margin: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.ai-code-note p {
  margin: 0;
  padding: 0 20px 20px;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.ai-dev-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.ai-dev-card {
  min-height: 100%;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

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

.ai-dev-card h3 {
  margin: 18px 0 12px;
}

.ai-dev-card p {
  color: var(--color-text-muted);
}

.ai-dev-icon {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: var(--radius-md);
  color: var(--color-ink);
  background: var(--color-lime);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 900;
}

.ai-dev-icon-pink {
  background: var(--color-pink);
}

.ai-dev-icon-coral {
  background: var(--color-coral);
}

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

.ai-failure-list {
  display: grid;
  max-width: 66rem;
  gap: 12px;
}

.ai-selection-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: clamp(34px, 7vw, 88px);
  align-items: center;
  padding: clamp(30px, 6vw, 72px);
  overflow: clip;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel-raised);
  box-shadow: var(--shadow-card);
}

.ai-selection-copy h2 {
  margin: 16px 0 18px;
}

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

.ai-selection-copy .button-row {
  margin-top: 28px;
}

.ai-selection-checklist {
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-deep);
  box-shadow: var(--shadow-soft);
}

.ai-selection-checklist h3 {
  margin-bottom: 20px;
  font-size: 1.15rem;
}

.ai-selection-checklist ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.ai-selection-checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 11px;
  align-items: start;
  color: var(--color-text-muted);
}

.ai-selection-checklist li span {
  width: 10px;
  height: 10px;
  margin-top: 8px;
  border-radius: var(--radius-sm);
  background: var(--color-lime);
}

.ai-selection-checklist li:nth-child(even) span {
  background: var(--color-accent);
}

@media (max-width: 1040px) {
  .ai-hero-grid {
    grid-template-columns: 1fr;
  }

  .ai-route-board {
    min-height: 430px;
  }

  .ai-feature-panel,
  .ai-feature-panel-reverse {
    grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
  }

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

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

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

@media (max-width: 780px) {
  .ai-hero {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .ai-route-board {
    min-height: 0;
  }

  .ai-feature-panel,
  .ai-feature-panel-reverse {
    grid-template-columns: 1fr;
  }

  .ai-feature-panel-reverse .ai-feature-visual,
  .ai-feature-panel-reverse .ai-feature-copy {
    order: initial;
  }

  .ai-feature-visual {
    min-height: 230px;
  }

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

@media (max-width: 560px) {
  .ai-tool-cloud {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ai-board-top {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .ai-route-chain {
    gap: 5px;
  }

  .ai-feature-panel {
    padding: 22px;
  }

  .ai-feature-visual {
    min-height: 200px;
  }

  .ai-guidance-list article {
    padding: 20px;
  }

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

  .ai-selection-checklist {
    padding: 20px;
  }
}