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

.ai-hero {
  position: relative;
  padding-top: clamp(72px, 9vw, 118px);
  padding-bottom: clamp(72px, 9vw, 112px);
  overflow-x: clip;
  background:
    radial-gradient(circle at 78% 28%, var(--color-accent-soft), var(--color-transparent) 34%),
    linear-gradient(var(--color-bg), var(--color-bg));
}

.ai-hero::before {
  content: "";
  position: absolute;
  inset: 48% 0 0;
  background-image:
    linear-gradient(var(--color-grid-line) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--color-grid-line) 1px, var(--color-transparent) 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.ai-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: clamp(42px, 7vw, 92px);
}

.ai-hero-copy h1 {
  max-width: 680px;
  margin-top: 22px;
  margin-bottom: 0;
}

.ai-hero-lead {
  max-width: 660px;
  margin-top: 24px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.8;
}

.ai-hero-actions {
  justify-content: flex-start;
  margin-top: 30px;
}

.ai-fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 24px;
}

.ai-routing-console {
  overflow: hidden;
  border: 1px solid var(--color-device-line);
  border-radius: var(--radius-md);
  background: var(--color-device);
  color: var(--color-device-text);
  box-shadow: var(--shadow-device);
  transform: rotate(0.6deg);
}

.ai-console-head {
  min-height: 44px;
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 9px;
  padding-inline: 16px;
  border-bottom: 1px solid var(--color-device-line);
  background: var(--color-device-deep);
  color: var(--color-device-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.ai-console-dot {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.ai-console-mode {
  justify-self: end;
  color: var(--color-device-text);
}

.ai-console-body {
  display: grid;
  grid-template-columns: minmax(108px, 0.8fr) minmax(190px, 1.5fr) minmax(108px, 0.8fr);
  align-items: center;
  gap: 18px;
  min-height: 300px;
  padding: 34px 24px;
  background-image:
    linear-gradient(var(--color-device-glass) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--color-device-glass) 1px, var(--color-transparent) 1px);
  background-size: 32px 32px;
}

.ai-request-source,
.ai-request-target {
  display: flex;
  min-width: 0;
  align-items: center;
  flex-direction: column;
  text-align: center;
}

.ai-request-source strong,
.ai-request-target strong {
  margin-top: 13px;
  font-size: 14px;
  font-weight: 570;
}

.ai-request-source small,
.ai-request-target small {
  margin-top: 5px;
  color: var(--color-device-muted);
  font-family: var(--font-mono);
  font-size: 8px;
  line-height: 1.5;
}

.ai-node-mark,
.ai-target-ring {
  position: relative;
  width: 56px;
  height: 56px;
  border: 1px solid var(--color-device-line);
  border-radius: var(--radius-pill);
  background: var(--color-device-deep);
}

.ai-node-mark::before,
.ai-node-mark::after {
  content: "";
  position: absolute;
  inset: 17px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-xs);
}

.ai-node-mark::after {
  inset: 23px;
  background: var(--color-accent);
}

.ai-target-ring {
  border-color: var(--color-accent-line);
  box-shadow: inset 0 0 0 9px var(--color-accent-soft);
}

.ai-target-ring::before {
  content: "";
  position: absolute;
  inset: 19px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.ai-route-lanes {
  display: grid;
  gap: 18px;
}

.ai-route-lane {
  display: grid;
  grid-template-columns: auto minmax(28px, 1fr) auto;
  align-items: center;
  gap: 9px;
  color: var(--color-device-muted);
  font-family: var(--font-mono);
  font-size: 9px;
}

.ai-route-lane i {
  position: relative;
  height: 1px;
  background: var(--color-device-line);
}

.ai-route-lane i::after {
  content: "";
  position: absolute;
  top: -3px;
  right: 0;
  width: 7px;
  height: 7px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.ai-route-lane b {
  color: var(--color-device-text);
  font-weight: 500;
}

.ai-console-foot {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 12px;
  padding-inline: 16px;
  border-top: 1px solid var(--color-device-line);
  background: var(--color-device-deep);
  color: var(--color-device-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.05em;
}

.ai-toc {
  width: min(calc(100% - (var(--gutter) * 2)), var(--wrap-max));
  margin-top: 18px;
}

.ai-process {
  position: relative;
  max-width: 980px;
  margin-left: auto;
}

.ai-process::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 112px;
  width: 1px;
  background: var(--color-border);
}

.ai-process-step {
  position: relative;
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 42px;
  padding-top: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--color-border);
}

.ai-process-step:last-child {
  border-bottom: 0;
}

.ai-step-label {
  position: relative;
  padding-top: 7px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.ai-step-label::after {
  content: "";
  position: absolute;
  top: 12px;
  right: -5px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--color-bg);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-line);
}

.ai-step-copy {
  max-width: 720px;
}

.ai-step-copy h3 {
  margin-bottom: 12px;
}

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

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

.ai-matrix-section {
  background: var(--color-panel-secondary);
}

.ai-tool-table td:nth-child(2),
.ai-tool-table td:nth-child(3),
.ai-tool-table td:nth-child(4) {
  min-width: 210px;
}

.ai-offset-layout {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(48px, 8vw, 120px);
}

.ai-offset-title {
  align-self: start;
  position: sticky;
  top: var(--toc-offset);
}

.ai-offset-content {
  max-width: 720px;
}

.ai-offset-content h3 {
  margin-top: 42px;
}

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

.ai-offset-content p {
  color: var(--color-text-muted);
}

.ai-dark-band {
  border-top: 1px solid var(--color-device-line);
  border-bottom: 1px solid var(--color-device-line);
  background: var(--color-device);
  color: var(--color-device-text);
}

.ai-dark-band h2,
.ai-dark-band h3 {
  color: var(--color-device-text);
}

.ai-dark-band .section-heading p,
.ai-dark-band article p {
  color: var(--color-device-muted);
}

.ai-dark-band .kicker {
  border-color: var(--color-device-line);
  background: var(--color-device-deep);
  color: var(--color-device-muted);
  box-shadow: none;
}

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

.ai-web-api-grid article {
  min-height: 300px;
  padding: clamp(24px, 4vw, 42px);
  border-right: 1px solid var(--color-device-line);
  border-bottom: 1px solid var(--color-device-line);
}

.ai-web-api-grid article:nth-child(even) {
  transform: translateY(18px);
}

.ai-channel-label {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--color-scene-light);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.ai-dev-rail {
  max-width: 1020px;
  margin-left: auto;
  border-top: 1px solid var(--color-border);
}

.ai-dev-rail article {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 40px;
  padding-top: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--color-border);
}

.ai-dev-key {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.ai-dev-rail article div:last-child {
  max-width: 720px;
}

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

.ai-dev-rail p:last-child {
  margin-bottom: 0;
}

.ai-diagnosis-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(48px, 8vw, 112px);
}

.ai-diagnosis-intro {
  align-self: start;
}

.ai-diagnosis-intro p {
  color: var(--color-text-muted);
}

.ai-failure-list {
  margin-top: 0;
}

.ai-choice-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 0.65fr);
  align-items: end;
  gap: 48px;
  margin-bottom: 48px;
}

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

.ai-choice-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.ai-choice-flow article {
  position: relative;
  min-height: 270px;
  padding: 32px;
  border-right: 1px solid var(--color-border);
}

.ai-choice-flow article:last-child {
  border-right: 0;
}

.ai-choice-flow article::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 32px;
  width: 32px;
  height: 7px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
}

.ai-choice-flow span {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.ai-choice-flow h3 {
  margin-top: 26px;
}

.ai-choice-flow p {
  color: var(--color-text-muted);
}

.ai-final-note {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 42px;
  margin-top: 58px;
  padding: clamp(26px, 5vw, 46px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.ai-final-note h3 {
  margin-bottom: 8px;
}

.ai-final-note p {
  max-width: 780px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.ai-final-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

@media (max-width: 980px) {
  .ai-hero-layout {
    grid-template-columns: 1fr;
  }

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

  .ai-routing-console {
    width: min(100%, 760px);
    transform: none;
  }

  .ai-offset-layout,
  .ai-diagnosis-layout {
    grid-template-columns: 1fr;
  }

  .ai-offset-title {
    position: static;
  }

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

  .ai-choice-flow article {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .ai-choice-flow article:last-child {
    border-bottom: 0;
  }

  .ai-choice-heading {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

@media (max-width: 768px) {
  .ai-hero {
    padding-top: 64px;
    padding-bottom: 72px;
  }

  .ai-hero-lead {
    font-size: 17px;
  }

  .ai-console-body {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .ai-route-lanes {
    width: 100%;
  }

  .ai-route-lane {
    grid-template-columns: minmax(70px, auto) minmax(28px, 1fr) minmax(70px, auto);
  }

  .ai-request-source,
  .ai-request-target {
    display: none;
  }

  .ai-process {
    margin-left: 0;
  }

  .ai-process::before {
    left: 7px;
  }

  .ai-process-step {
    grid-template-columns: 1fr;
    gap: 14px;
    padding-left: 32px;
  }

  .ai-step-label::after {
    top: 9px;
    right: auto;
    left: -29px;
  }

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

  .ai-web-api-grid article:nth-child(even) {
    transform: none;
  }

  .ai-dev-rail article {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

@media (max-width: 620px) {
  .ai-hero-actions {
    width: 100%;
  }

  .ai-hero-actions .cta {
    flex: 1;
    min-width: 0;
  }

  .ai-console-head {
    grid-template-columns: auto 1fr;
  }

  .ai-console-mode {
    display: none;
  }

  .ai-console-foot {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .ai-route-lane {
    font-size: 8px;
  }

  .ai-choice-flow article {
    padding-inline: 20px;
  }

  .ai-choice-flow article::before {
    left: 20px;
  }

  .ai-final-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .ai-final-actions .button {
    width: 100%;
  }
}