/* 読みやすさ・タップ操作だけを改善。3Dロジックは変更しない。 */
#chapter2Pane{
  scroll-behavior:smooth;
}
#chapter2Pane .net-toc-card,
#chapter2Pane button,
#chapter2Pane a{
  -webkit-tap-highlight-color:transparent;
}
#chapter2Pane .net-toc-card{
  transition:transform .16s ease, box-shadow .16s ease;
}
#chapter2Pane .net-toc-card:active{
  transform:scale(.985);
}
#chapter2Pane iframe{
  border-radius:18px!important;
  overflow:hidden;
}
#chapter2Pane button,
#chapter2Pane input[type="range"]{
  touch-action:manipulation;
}
#chapter2Pane button:focus-visible,
#chapter2Pane a:focus-visible{
  outline:3px solid rgba(91,151,139,.28);
  outline-offset:3px;
}
@media(max-width:700px){
  #chapter2Pane .net-toc-card{
    min-height:88px;
  }
  #chapter2Pane iframe{
    border-radius:15px!important;
  }
}
@media(prefers-reduced-motion:reduce){
  #chapter2Pane{scroll-behavior:auto}
  #chapter2Pane .net-toc-card{transition:none}
}