.doc-mast{
  background:linear-gradient(180deg,var(--atmo-top),var(--atmo-bottom));
  border-bottom:1px solid var(--border);
}
.doc-mast h1{
  margin-top:24px;
  margin-bottom:0;
}
.doc-mast .lead{
  max-width:38em;
}
.doc-intro{
  margin-top:24px;
  margin-bottom:24px;
  color:var(--text-muted);
  line-height:1.85;
}
.doc-intro a{
  color:var(--accent);
  text-decoration:underline;
  text-underline-offset:3px;
}
.doc-body{
  padding-top:28px;
  padding-bottom:72px;
}
.doc-chapter{
  padding-top:12px;
  padding-bottom:32px;
  border-bottom:1px solid var(--border);
}
.doc-chapter:last-child{
  border-bottom:0;
}
.doc-chapter h2{
  margin-bottom:28px;
}
.doc-chapter h3{
  margin-bottom:16px;
}
.doc-chapter p{
  margin-top:16px;
  margin-bottom:20px;
}
.doc-chapter .table-scroll{
  margin-top:28px;
  margin-bottom:32px;
}
.doc-chapter .callout p{
  margin:0;
}
@media(max-width:640px){
  .doc-body{
    padding-bottom:40px;
  }
  .doc-chapter{
    padding-bottom:24px;
  }
}