.ai-hero {
  overflow-x: clip;
  border-bottom: 1px solid var(--color-line);
}

.ai-hero__layout {
  display: grid;
  min-height: calc(100svh - var(--header-height));
  grid-template-columns: minmax(0, 0.94fr) minmax(460px, 1.06fr);
  gap: 72px;
  align-items: center;
  padding-top: 64px;
  padding-bottom: 64px;
}

.ai-hero__copy {
  min-width: 0;
}

.ai-hero__copy h1 {
  margin-top: 22px;
}

.ai-hero__copy .lead {
  margin-top: 26px;
}

.ai-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.ai-hero__copy .chips {
  margin-top: 26px;
}

.ai-section-map {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
}

.ai-section-map__head {
  display: flex;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-inline: 18px;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-ink-muted);
  background: var(--color-panel);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.ai-section-map__body {
  padding: 42px 34px 32px;
}

.ai-section-map__lane {
  display: grid;
  grid-template-columns: auto minmax(26px, 1fr) auto minmax(26px, 1fr) auto;
  align-items: center;
  margin-bottom: 40px;
}

.ai-section-map__node {
  display: grid;
  min-width: 84px;
  min-height: 84px;
  place-items: center;
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
}

.ai-section-map__node--active {
  color: var(--color-canvas);
  border-color: var(--color-signal);
  background: var(--color-signal);
}

.ai-section-map__line {
  position: relative;
  height: 1px;
  background: var(--color-line);
}

.ai-section-map__line::after {
  position: absolute;
  top: 50%;
  right: 0;
  width: 7px;
  height: 7px;
  content: "";
  border-radius: var(--radius-pill);
  background: var(--color-signal);
  transform: translate(1px, -50%);
}

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

.ai-section-map__notes div {
  min-width: 0;
  padding: 20px;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.ai-section-map__notes dt {
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.ai-section-map__notes dd {
  margin-top: 8px;
  color: var(--color-ink-muted);
  font-size: 13px;
  line-height: 1.65;
}

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

.ai-section-head {
  display: grid;
  max-width: 850px;
  gap: 18px;
  margin-bottom: 48px;
}

.ai-section-head > p:last-child {
  color: var(--color-ink-muted);
  font-size: 17px;
  line-height: 1.8;
}

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

.ai-principle {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 42px;
  padding-top: 38px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--color-line);
}

.ai-principle__mark {
  display: grid;
  width: 94px;
  height: 94px;
  place-items: center;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  color: var(--color-ink);
  background: var(--color-canvas);
}

.ai-principle__mark svg {
  width: 64px;
  height: 64px;
  stroke-width: 1.25;
}

.ai-principle .mono,
.ai-check-stack .mono,
.ai-config-note .mono {
  color: var(--color-signal);
  font-size: 11px;
  letter-spacing: 0.09em;
}

.ai-principle h3 {
  margin-top: 9px;
  font-size: 30px;
}

.ai-principle p {
  max-width: 78ch;
  margin-top: 14px;
  color: var(--color-ink-muted);
  line-height: 1.85;
}

.ai-tool-table td {
  min-width: 180px;
}

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

.ai-panel-section .callout {
  margin-top: 28px;
  background: var(--color-canvas);
}

.ai-split {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 72px;
  align-items: start;
}

.ai-split__intro {
  position: sticky;
  top: calc(var(--toc-offset) + 28px);
}

.ai-split__intro h2 {
  margin-top: 18px;
}

.ai-split__intro > p:last-child {
  margin-top: 22px;
  color: var(--color-ink-muted);
  font-size: 17px;
  line-height: 1.85;
}

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

.ai-check-stack article {
  padding-top: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-line);
}

.ai-check-stack h3 {
  margin-top: 10px;
  font-size: 29px;
}

.ai-check-stack p {
  margin-top: 14px;
  color: var(--color-ink-muted);
  line-height: 1.85;
}

.ai-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  background: var(--color-canvas);
}

.ai-compare__column {
  min-width: 0;
  padding: 36px;
}

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

.ai-compare__label {
  display: inline-flex;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.09em;
}

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

.ai-compare ul {
  display: grid;
  gap: 15px;
  margin-top: 26px;
  list-style: none;
  color: var(--color-ink-muted);
}

.ai-compare li {
  position: relative;
  padding-left: 22px;
}

.ai-compare li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 7px;
  height: 7px;
  content: "";
  border: 1px solid var(--color-signal);
}

.ai-config-note {
  display: grid;
  grid-template-columns: minmax(220px, 0.58fr) minmax(0, 1.42fr);
  gap: 42px;
  margin-top: 44px;
  padding-top: 28px;
  padding-bottom: 28px;
  border-top: 1px solid var(--color-ink);
  border-bottom: 1px solid var(--color-ink);
}

.ai-config-note h3 {
  margin-top: 9px;
  font-family: var(--font-body);
  font-size: 19px;
  font-weight: 650;
}

.ai-config-note > p {
  color: var(--color-ink-muted);
  line-height: 1.85;
}

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

.ai-failure-grid article {
  min-width: 0;
  padding: 30px;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.ai-failure-grid h3 {
  font-family: var(--font-body);
  font-size: 19px;
  font-weight: 650;
  line-height: 1.5;
}

.ai-failure-grid p {
  margin-top: 13px;
  color: var(--color-ink-muted);
  line-height: 1.8;
}

.ai-route-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(340px, 0.86fr);
  gap: 72px;
  align-items: start;
}

.ai-route-layout__copy h2 {
  margin-top: 18px;
}

.ai-route-layout__copy > p:not(.kicker) {
  margin-top: 20px;
  color: var(--color-ink-muted);
  font-size: 16px;
  line-height: 1.9;
}

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

.ai-route-link {
  display: grid;
  gap: 12px;
  padding-top: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
}

.ai-route-link > .mono {
  color: var(--color-signal);
  font-size: 10px;
  letter-spacing: 0.09em;
}

.ai-route-link > strong {
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 400;
}

.ai-route-link > span:not(.mono, .text-link) {
  color: var(--color-ink-muted);
  line-height: 1.75;
}

.ai-route-link .text-link {
  width: max-content;
  margin-top: 6px;
}

@media (max-width: 1080px) {
  .ai-hero__layout {
    grid-template-columns: 1fr;
    gap: 52px;
    min-height: auto;
  }

  .ai-split,
  .ai-route-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .ai-split__intro {
    position: static;
  }
}

@media (max-width: 820px) {
  .ai-principle {
    grid-template-columns: 100px minmax(0, 1fr);
    gap: 26px;
  }

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

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

  .ai-config-note {
    grid-template-columns: 1fr;
    gap: 22px;
  }

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

@media (max-width: 640px) {
  .ai-hero__layout {
    gap: 40px;
    padding-top: 44px;
    padding-bottom: 48px;
  }

  .ai-hero__copy .lead {
    margin-top: 20px;
    font-size: 16px;
  }

  .ai-hero__actions .btn-main,
  .ai-hero__actions .btn-sub {
    flex: 1 1 140px;
  }

  .ai-section-map__head {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .ai-section-map__body {
    padding: 28px 16px 20px;
  }

  .ai-section-map__lane {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .ai-section-map__node {
    width: 100%;
    min-height: 52px;
    border-radius: var(--radius-small);
  }

  .ai-section-map__line {
    width: 1px;
    height: 24px;
    justify-self: center;
  }

  .ai-section-map__line::after {
    top: auto;
    right: 50%;
    bottom: 0;
    transform: translate(50%, 1px);
  }

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

  .ai-section-head {
    margin-bottom: 34px;
  }

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

  .ai-principle {
    grid-template-columns: 1fr;
    gap: 18px;
    padding-top: 28px;
    padding-bottom: 28px;
  }

  .ai-principle__mark {
    width: 72px;
    height: 72px;
  }

  .ai-principle__mark svg {
    width: 50px;
    height: 50px;
  }

  .ai-principle h3,
  .ai-check-stack h3 {
    font-size: 25px;
  }

  .ai-compare__column {
    padding: 24px;
  }

  .feature-note__index svg {
    width: 58px;
    height: 58px;
  }

  .ai-failure-grid article {
    padding: 24px;
  }

  .ai-route-layout {
    gap: 38px;
  }
}