.ai-intro{
  padding-bottom:48px;
}
.ai-intro-grid{
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  align-items:center;
  gap:64px;
}
.ai-intro h1{
  margin-top:24px;
}
.ai-intro-text{
  max-width:34em;
  margin-top:24px;
  color:var(--muted);
  font-size:var(--text-lg);
  line-height:1.8;
}
.ai-intro .cta-row{
  margin-top:28px;
}
.ai-intro-note{
  margin-top:20px;
  color:var(--muted);
  font-size:var(--text-sm);
}
.ai-checkdesk{
  padding:0;
  box-shadow:var(--shadow-card),var(--hl);
}
.ai-checkdesk .titlebar{
  border-radius:var(--r-xl) var(--r-xl) 0 0;
  padding-block:10px;
}
.ai-desk-title{
  color:var(--muted);
  font-size:var(--text-xs);
  font-weight:650;
}
.ai-checkdesk-content{
  padding:28px;
}
.ai-desk-kicker{
  color:var(--accent);
  font-size:var(--text-xs);
  letter-spacing:.06em;
}
.ai-check-list{
  margin-block:20px 24px;
}
.ai-check-list>div{
  padding-block:16px;
  border-bottom:1px solid var(--border-soft);
  min-width:0;
}
.ai-check-list dt{
  font-weight:700;
}
.ai-check-list dd{
  margin:6px 0 0;
  color:var(--muted);
  font-size:var(--text-sm);
}
.ai-guide{
  padding-top:24px;
}
.ai-chapter{
  padding-top:64px;
}
.ai-section-label{
  display:block;
  margin-bottom:16px;
  color:var(--accent);
  font-size:var(--text-xs);
  letter-spacing:.06em;
}
.ai-two-columns{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:40px;
}
.ai-two-columns>*{
  min-width:0;
}
.ai-two-columns .prose h3{
  margin-top:0;
}
.ai-two-columns .prose p:last-child{
  margin-bottom:0;
}
.ai-two-columns>.panel p{
  margin-top:20px;
  color:var(--muted);
  line-height:1.85;
}
.ai-guide .prose{
  line-height:1.85;
}
.ai-guide .prose p{
  color:var(--muted);
}
.ai-guide .callout a{
  color:var(--accent);
  text-decoration:underline;
  text-underline-offset:3px;
}
.ai-tool-table{
  min-width:920px;
}
.ai-tool-table th[scope="row"]{
  background:var(--panel);
}
.ai-tool-table td{
  vertical-align:top;
}
.ai-after-table{
  margin-top:28px;
}
.ai-dev-list{
  border-top:1px solid var(--border);
}
.ai-dev-entry{
  display:grid;
  grid-template-columns:minmax(0,.35fr) minmax(0,1fr);
  gap:40px;
  padding-block:32px;
  border-bottom:1px solid var(--border);
}
.ai-dev-entry>*{
  min-width:0;
}
.ai-dev-entry>.prose p:first-child{
  margin-top:0;
}
.ai-dev-entry>.prose p:last-child{
  margin-bottom:0;
}
.ai-selection-note{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,.65fr);
  gap:32px;
  align-items:center;
  margin-top:32px;
}
.ai-selection-note>*{
  min-width:0;
}
.ai-selection-note p{
  margin-top:12px;
  color:var(--muted);
}
.ai-reading-links{
  display:grid;
  gap:8px;
}
.ai-reading-links a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:44px;
  padding-block:8px;
  color:var(--accent);
  font-weight:650;
  border-bottom:1px solid var(--border-soft);
}
.ai-reading-links a span{
  flex-shrink:0;
}
@media(max-width:1100px){
  .ai-intro-grid{
    gap:32px;
  }
  .ai-two-columns{
    gap:28px;
  }
}
@media(max-width:768px){
  .ai-intro-grid{
    grid-template-columns:1fr;
  }
  .ai-intro-text{
    font-size:var(--text-base);
  }
  .ai-two-columns,.ai-selection-note,.ai-dev-entry{
    grid-template-columns:1fr;
    gap:24px;
  }
  .ai-chapter{
    padding-top:48px;
  }
}
@media(max-width:640px){
  .ai-checkdesk{
    padding:0;
  }
  .ai-checkdesk-content{
    padding:22px;
  }
  .ai-intro{
    padding-bottom:32px;
  }
  .ai-guide{
    padding-top:16px;
  }
  .ai-dev-entry{
    padding-block:24px;
  }
}