.ai-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-line);
  background-color: var(--color-bg);
  background-image: linear-gradient(var(--color-line) 1px, transparent 1px), linear-gradient(90deg, var(--color-line) 1px, transparent 1px);
  background-size: 48px 48px;
}

.ai-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 45%, var(--color-accent-soft), transparent 42%);
  pointer-events: none;
}

.ai-hero-grid {
  position: relative;
  display: grid;
  min-height: 650px;
  padding-top: 76px;
  padding-bottom: 88px;
  grid-template-columns: minmax(0, .9fr) minmax(520px, 1.1fr);
  align-items: center;
  gap: 68px;
}

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

.ai-hero-copy h1 {
  margin-top: 22px;
  margin-bottom: 0;
}

.ai-hero-lead {
  max-width: 620px;
  margin-top: 24px;
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 18px;
}

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

.ai-fact-strip li {
  min-width: 0;
  padding: 15px 17px;
  background: var(--color-bg);
}

.ai-fact-strip strong,
.ai-fact-strip span {
  display: block;
}

.ai-fact-strip strong {
  font-family: var(--font-mono);
  font-size: 14px;
}

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

.ai-console {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  box-shadow: var(--shadow-window);
  transform: rotate(1deg);
}

.ai-console-bar {
  position: relative;
  display: flex;
  min-height: 44px;
  padding-inline: 17px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.ai-console-bar .window-dots {
  position: absolute;
  left: 17px;
}

.ai-console-body {
  padding: 30px;
}

.ai-path {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
}

.ai-path-node {
  min-width: 0;
  min-height: 150px;
  padding: 20px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.ai-path-node.is-emphasized {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.ai-path-node strong,
.ai-path-node small {
  display: block;
}

.ai-path-node strong {
  margin-top: 22px;
  font-size: 15px;
}

.ai-path-node small {
  margin-top: 6px;
  color: var(--color-muted);
  line-height: 1.55;
}

.ai-node-code,
.ai-principle-code {
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.ai-path-arrow {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 800;
}

.ai-checklist {
  display: grid;
  margin-top: 20px;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ai-checklist div {
  display: grid;
  min-width: 0;
  padding: 13px 15px;
  border-bottom: 1px solid var(--color-line);
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.ai-checklist div:nth-last-child(-n+2) {
  border-bottom: 0;
}

.ai-checklist div:nth-child(odd) {
  border-right: 1px solid var(--color-line);
}

.ai-checklist strong {
  color: var(--color-success);
  font-size: 10px;
}

.ai-console figcaption {
  padding: 15px 30px;
  border-top: 1px solid var(--color-line);
  background: var(--color-panel);
  color: var(--color-muted);
  font-size: 12px;
}

.ai-reading-grid {
  display: grid;
  grid-template-columns: minmax(260px, .7fr) minmax(0, 1.3fr);
  gap: 70px;
}

.ai-reading-grid .section-heading {
  position: sticky;
  top: calc(var(--header-height) + 28px);
  align-self: start;
}

.ai-principles {
  display: grid;
  gap: 16px;
}

.ai-principle {
  min-width: 0;
  padding: 28px;
  border-top: 1px solid var(--color-line);
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  background: var(--color-bg);
}

.ai-principle h3 {
  margin-top: 12px;
  font-size: 23px;
}

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

.ai-heading-inverse h2 {
  color: var(--color-inverse);
}

.ai-dark-kicker {
  color: var(--color-inverse-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
}

.ai-tool-browser {
  overflow: hidden;
  border: 1px solid var(--color-inverse-line);
  border-radius: var(--radius-xl);
  background: var(--color-ink);
  box-shadow: var(--shadow-window);
}

.ai-tool-entry {
  display: grid;
  min-width: 0;
  padding: 32px;
  border-bottom: 1px solid var(--color-inverse-line);
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 30px;
}

.ai-tool-entry:last-child {
  border-bottom: 0;
}

.ai-tool-entry h3 {
  color: var(--color-inverse);
}

.ai-tool-entry p {
  max-width: 880px;
  margin-bottom: 0;
  color: var(--color-inverse-muted);
}

.ai-tool-index {
  display: inline-flex;
  min-height: 32px;
  align-self: start;
  align-items: center;
  justify-content: center;
  padding: 6px 11px;
  border: 1px solid var(--color-inverse-line);
  border-radius: var(--radius-pill);
  color: var(--color-inverse-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

.ai-table-wrap {
  box-shadow: var(--shadow-soft);
}

.ai-route-matrix td {
  min-width: 170px;
}

.ai-route-matrix td:first-child {
  min-width: 130px;
  font-family: var(--font-mono);
}

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

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

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

.ai-mode-card h3 {
  margin-top: 20px;
}

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

.ai-mode-card ul {
  display: grid;
  margin-bottom: 0;
  gap: 8px;
}

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

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

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

.ai-troubleshoot-layout {
  display: grid;
  grid-template-columns: minmax(260px, .7fr) minmax(0, 1.3fr);
  gap: 70px;
}

.ai-troubleshoot-layout .section-heading {
  position: sticky;
  top: calc(var(--header-height) + 28px);
  align-self: start;
}

.ai-diagnostic-list {
  display: grid;
  border-top: 1px solid var(--color-line);
}

.ai-diagnostic {
  min-width: 0;
  padding-top: 26px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--color-line);
}

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

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

.ai-selection-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, .8fr);
  align-items: start;
  gap: 68px;
}

.ai-selection h2 {
  margin-top: 14px;
  color: var(--color-inverse);
}

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

.ai-selection-actions {
  display: flex;
  margin-top: 30px;
  flex-wrap: wrap;
  gap: 12px;
}

.ai-service-facts {
  overflow: hidden;
  border: 1px solid var(--color-inverse-line);
  border-radius: var(--radius-xl);
  background: var(--color-ink);
}

.ai-service-facts > div {
  padding: 24px;
  border-bottom: 1px solid var(--color-inverse-line);
}

.ai-service-facts > div:last-child {
  border-bottom: 0;
}

.ai-service-facts span,
.ai-service-facts strong {
  display: block;
}

.ai-service-facts span {
  margin-bottom: 8px;
  color: var(--color-inverse-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

.ai-service-facts strong {
  color: var(--color-inverse);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.65;
}

.ai-service-facts p {
  margin-top: 7px;
  margin-bottom: 0;
  font-size: 13px;
}

@media (max-width: 1120px) {
  .ai-hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .ai-console {
    transform: none;
  }

  .ai-reading-grid,
  .ai-troubleshoot-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .ai-reading-grid .section-heading,
  .ai-troubleshoot-layout .section-heading {
    position: static;
  }

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

@media (max-width: 768px) {
  .ai-hero {
    background-size: 36px 36px;
  }

  .ai-hero-grid {
    padding-top: 54px;
    padding-bottom: 64px;
    gap: 42px;
  }

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

  .ai-console-body {
    padding: 20px;
  }

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

  .ai-path-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }

  .ai-path-node {
    min-height: auto;
  }

  .ai-path-node strong {
    margin-top: 12px;
  }

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

  .ai-checklist div,
  .ai-checklist div:nth-last-child(-n+2) {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .ai-checklist div:last-child {
    border-bottom: 0;
  }

  .ai-tool-entry {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .ai-tool-index {
    justify-self: start;
  }

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

  .ai-selection-actions {
    align-items: stretch;
    flex-direction: column;
  }

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

@media (max-width: 520px) {
  .ai-fact-strip {
    grid-template-columns: 1fr;
  }

  .ai-console-bar {
    justify-content: flex-end;
  }

  .ai-console-bar > span:last-child {
    max-width: 65%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .ai-console figcaption {
    padding-inline: 20px;
  }

  .ai-principle,
  .ai-tool-entry {
    padding: 22px;
  }

  .ai-service-facts > div {
    padding: 20px;
  }

  .ai-service-facts strong {
    overflow-wrap: anywhere;
  }
}