.ai-intro {
  padding-top: 64px;
  padding-bottom: 64px;
}
.ai-intro__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  align-items: center;
  gap: 48px;
}
.ai-intro__grid > * {
  min-width: 0;
}
.ai-path__body {
  padding: 28px;
}
.ai-path__body > .mono {
  font-size: var(--fs-label);
}
.ai-path__steps {
  margin: 24px 0;
  padding: 0;
  list-style: none;
}
.ai-path__steps li {
  position: relative;
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 4px 16px;
  padding-bottom: 28px;
}
.ai-path__steps li:last-child {
  padding-bottom: 0;
}
.ai-path__steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 18px;
  bottom: 0;
  left: 5px;
  width: 1px;
  background: var(--accent-22);
}
.ai-path__steps strong {
  font-weight: var(--weight-semibold);
}
.ai-path__steps li > span:last-child {
  grid-column: 2;
  color: var(--muted);
  font-size: var(--fs-small);
}
.ai-path__node {
  width: 11px;
  height: 11px;
  margin-top: 7px;
  border: 2px solid var(--panel);
  border-radius: var(--radius-circle);
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-10), 0 0 18px var(--soft-30);
}
.ai-path__note {
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: var(--fs-small);
}
.ai-document > .toc-tabs {
  margin-bottom: 48px;
}
.ai-chapter + .ai-chapter {
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.ai-chapter .prose {
  max-width: 880px;
}
.ai-chapter .section-head .kicker {
  margin-bottom: 20px;
}
.ai-chapter .table-scroll {
  margin-bottom: 28px;
}
.ai-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 32px;
  margin-top: 32px;
  padding: 28px;
}
.ai-next > * {
  min-width: 0;
}
.ai-next p {
  max-width: 640px;
  margin-top: 12px;
  color: var(--muted);
}
.ai-next__links {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
}
.ai-next__links .article-card__link {
  justify-content: center;
}
@media (max-width: 900px) {
  .ai-intro__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }
  .ai-path {
    max-width: 640px;
    width: 100%;
  }
  .ai-next {
    grid-template-columns: minmax(0, 1fr);
  }
  .ai-next__links {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
}
@media (max-width: 768px) {
  .ai-intro {
    padding-top: 36px;
    padding-bottom: 40px;
  }
  .ai-path__body {
    padding: 24px;
  }
  .ai-chapter + .ai-chapter {
    margin-top: 48px;
    padding-top: 32px;
  }
  .ai-document > .toc-tabs {
    margin-bottom: 32px;
  }
  .ai-next {
    padding: 24px;
    gap: 24px;
  }
}