.ai-opening{
  display:grid;
  grid-template-columns:minmax(0,6fr) minmax(0,5fr);
  align-items:center;
  gap:64px;
}
.ai-opening>*{min-width:0}
.ai-opening-copy h1{margin-bottom:24px}
.ai-deck{
  margin-bottom:20px;
  font:var(--weight-title) clamp(20px,2vw,28px)/1.5 var(--font-display);
  color:var(--text-2);
}
.ai-opening-note{
  margin:20px 0 0;
  font-size:14px;
  color:var(--muted);
}
.ai-scene{
  position:relative;
  min-width:0;
  border-radius:var(--r);
  background:var(--panel);
  box-shadow:var(--shadow-panel);
}
.ai-scene>svg{
  display:block;
  width:100%;
  height:auto;
  border-radius:var(--r);
}
.ai-scene-note{
  position:absolute;
  top:24px;
  left:24px;
  right:24px;
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:16px;
  background:var(--glass-light);
  color:var(--text);
  border:1px solid var(--glass-edge);
  border-radius:var(--r);
  backdrop-filter:blur(12px);
  box-shadow:inset 0 1px 0 var(--glass-top);
  font-size:14px;
}
.ai-scene-note .mono{font-size:13px}
.ai-scene figcaption{
  padding:12px 16px;
  color:var(--muted);
  font-size:12px;
  border:1px solid var(--border);
  border-top:0;
}
.ai-guide{max-width:1160px}
.ai-chapter{margin-top:72px}
.ai-reading{max-width:var(--reading)}
.ai-reading p{line-height:1.9}
.ai-reading h3{margin-top:32px;font-size:23px}
.ai-chapter .section-intro{max-width:var(--reading)}
.ai-chapter .callout{max-width:var(--reading)}
.ai-chapter .compare-table td{vertical-align:top}
.ai-chapter .compare-table tbody th{background:var(--panel)}
.ai-chapter .compare-table{min-width:880px}
.ai-help-link{
  margin:24px 0 0;
  max-width:var(--reading);
  color:var(--muted);
}
.ai-next{
  display:flex;
  flex-wrap:wrap;
  gap:16px 32px;
  padding-top:24px;
  margin-top:32px;
  border-top:1px solid var(--border);
}
@media(max-width:1024px){
  .ai-opening{gap:32px;grid-template-columns:minmax(0,6fr) minmax(0,5fr)}
  .ai-scene-note{top:16px;left:16px;right:16px;padding:12px}
}
@media(max-width:768px){
  .ai-opening{grid-template-columns:minmax(0,1fr);gap:40px}
  .ai-scene{max-width:520px;width:100%}
  .ai-scene>svg{max-height:320px;object-fit:cover}
  .ai-chapter{margin-top:48px}
  .ai-reading h3{font-size:21px}
  .ai-next{flex-direction:column;align-items:flex-start}
}