.ai-hero {
  position: relative;
  overflow-x: clip;
  padding-top: 76px;
  padding-bottom: 82px;
}

.ai-hero::before {
  content: "";
  position: absolute;
  top: 4%;
  right: -10%;
  width: 58%;
  height: 92%;
  border-radius: var(--radius-pill);
  background: radial-gradient(closest-side, var(--color-accent-medium), transparent);
  pointer-events: none;
}

.ai-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(400px, 0.92fr);
  align-items: center;
  gap: 68px;
}

.ai-hero-copy {
  max-width: 680px;
}

.ai-hero-lede {
  max-width: 640px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.85;
}

.ai-fact-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.ai-console {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-window);
  transform: rotate(2deg);
}

.ai-console::before {
  content: "";
  position: absolute;
  right: -18%;
  bottom: -24%;
  width: 66%;
  height: 66%;
  border-radius: var(--radius-pill);
  background: radial-gradient(closest-side, var(--color-accent-medium), transparent);
  pointer-events: none;
}

.ai-console-bar {
  position: relative;
  display: flex;
  min-height: 52px;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--color-border);
  padding: 12px 18px;
}

.ai-console-title {
  margin-left: 10px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.ai-console-body {
  position: relative;
  padding: 24px;
}

.ai-core-mark {
  display: flex;
  align-items: center;
  gap: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel-strong);
  padding: 18px;
}

.ai-core-mark svg {
  flex: 0 0 auto;
  color: var(--color-accent);
}

.ai-core-mark strong,
.ai-core-mark span {
  display: block;
}

.ai-core-mark strong {
  font-size: 16px;
}

.ai-core-mark span {
  margin-top: 3px;
  color: var(--color-text-muted);
  font-size: 12px;
}

.ai-signal-list {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.ai-signal-list li {
  display: grid;
  grid-template-columns: auto minmax(90px, auto) minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  padding: 13px 15px;
}

.ai-signal-list strong {
  font-size: 13px;
}

.ai-signal-list li > span:last-child {
  color: var(--color-text-muted);
  font-size: 12px;
  text-align: right;
}

.ai-console-foot {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-top: 1px solid var(--color-border);
  background: var(--color-panel-strong);
  padding: 14px 22px;
}

.ai-console-foot span {
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  padding: 5px 11px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.ai-guide {
  position: relative;
}

.ai-guide > .section {
  padding-top: 88px;
  padding-bottom: 88px;
}

.ai-guide > .section + .section {
  border-top: 1px solid var(--color-border);
}

.ai-section-heading {
  max-width: 820px;
  margin-bottom: 36px;
}

.ai-section-heading > p:last-child {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 17px;
}

.ai-principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.ai-principle-grid .card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
}

.ai-principle-grid h3 {
  font-size: 22px;
}

.ai-principle-grid p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.ai-card-index {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 18px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  padding: 5px 10px;
  color: var(--color-accent-dark);
  font-size: 11px;
  font-weight: 700;
}

.ai-callout {
  margin-top: 28px;
}

.ai-tool-table td:nth-child(2) {
  min-width: 250px;
}

.ai-tool-table td:nth-child(4) {
  min-width: 230px;
}

.ai-tool-notes {
  margin-top: 24px;
}

.ai-tool-notes h3 {
  font-size: 21px;
}

.ai-tool-notes p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.ai-reading-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  align-items: start;
  gap: 32px;
}

.ai-reading-grid p {
  color: var(--color-text-muted);
}

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

.ai-check-list {
  display: grid;
  gap: 12px;
  margin-bottom: 0;
  padding: 0;
  list-style: none;
}

.ai-check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--color-text-muted);
}

.ai-check-list li::before {
  content: "✓";
  position: absolute;
  top: 0;
  left: 0;
  color: var(--color-success);
  font-weight: 800;
}

.ai-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.ai-compare-column {
  padding: 34px;
}

.ai-compare-column + .ai-compare-column {
  border-left: 1px solid var(--color-border);
  background: var(--color-panel-strong);
}

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

.ai-compare-column > :last-child {
  margin-bottom: 0;
}

.ai-compare-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.ai-compare-head h3 {
  margin-bottom: 0;
}

.ai-body-note {
  margin-top: 24px;
  margin-bottom: 0;
  border-left: 3px solid var(--color-accent);
  padding-left: 18px;
  color: var(--color-text-muted);
}

.ai-dev-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.ai-dev-grid .card {
  min-height: 100%;
}

.ai-dev-grid p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.ai-dev-icon {
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border-radius: var(--radius-md);
  background: var(--color-panel-strong);
  color: var(--color-accent-dark);
}

.ai-route-steps {
  display: grid;
  gap: 14px;
}

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

.ai-route-steps h3 {
  margin-bottom: 7px;
  font-size: 21px;
}

.ai-route-steps p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.ai-step-mark {
  display: inline-flex;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
}

.ai-service-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 30px;
  margin-top: 28px;
  border-radius: var(--radius-xl);
  background: var(--color-panel-strong);
  padding: 32px;
}

.ai-service-panel h3 {
  font-size: 24px;
}

.ai-service-panel p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.ai-service-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.ai-closing {
  max-width: 900px;
  margin-top: 28px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

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

  .ai-hero-copy {
    max-width: 760px;
  }

  .ai-console {
    width: 100%;
    max-width: 680px;
    margin-inline: auto;
  }

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

  .ai-principle-grid .card,
  .ai-dev-grid .card {
    min-height: auto;
  }
}

@media (max-width: 820px) {
  .ai-reading-grid,
  .ai-compare,
  .ai-service-panel {
    grid-template-columns: 1fr;
  }

  .ai-compare-column + .ai-compare-column {
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }

  .ai-service-links {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .ai-hero {
    padding-top: 44px;
    padding-bottom: 58px;
  }

  .ai-hero-grid {
    gap: 38px;
  }

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

  .ai-console {
    transform: none;
  }

  .ai-console-body {
    padding: 16px;
  }

  .ai-signal-list li {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .ai-signal-list li > span:last-child {
    grid-column: 2;
    text-align: left;
  }

  .ai-guide > .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .ai-section-heading {
    margin-bottom: 28px;
  }

  .ai-section-heading > p:last-child {
    font-size: 16px;
  }

  .ai-compare-column {
    padding: 24px;
  }

  .ai-route-steps article {
    padding: 20px;
  }

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

  .ai-service-links,
  .ai-service-links li,
  .ai-service-links .btn {
    width: 100%;
  }
}