/* 长文补充段的独立样式。
   放在单独文件里，只作用于 .deepen，不覆盖各页原有布局。
   变量带回退值：studio-design / site / site-theme 三套主题都能用。 */
.deepen{
  --d-ink:var(--ink,#182e28);
  --d-muted:var(--muted,#66756e);
  --d-line:var(--line,#dce4dd);
  --d-accent:#17654a;
  max-width:900px;
  margin:0 auto;
  padding:56px 24px 72px;
  color:var(--d-ink);
  font-size:16px;
  line-height:1.75;
}
.deepen--wide{max-width:1100px}
.deepen h2{
  margin:2.2em 0 .5em;
  font-size:clamp(1.45rem,2.6vw,2rem);
  line-height:1.25;
  letter-spacing:-.01em;
}
.deepen h2:first-of-type{margin-top:0}
.deepen h3{
  margin:1.8em 0 .4em;
  font-size:1.1rem;
  line-height:1.35;
}
.deepen p{margin:0 0 1em}
.deepen ul,.deepen ol{margin:0 0 1.2em;padding-left:1.35em}
.deepen li{margin:.45em 0}
.deepen .lede{
  margin:0 0 1.6em;
  padding-bottom:1.2em;
  border-bottom:1px solid var(--d-line);
  color:var(--d-muted);
  font-size:1.05rem;
}
.deepen .kicker{
  margin:0 0 .6em;
  color:var(--d-accent);
  font-size:.72rem;
  font-weight:800;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.deepen .grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
  margin:1.6em 0 2em;
}
.deepen .box{
  padding:18px 20px;
  border:1px solid var(--d-line);
  border-radius:12px;
}
.deepen .box h3{margin:0 0 .35em;font-size:1rem}
.deepen .box p{margin:0;color:var(--d-muted);font-size:.94rem}
.deepen dl{margin:1.4em 0 2em}
.deepen dt{margin:.9em 0 .2em;font-weight:700}
.deepen dd{margin:0;color:var(--d-muted)}
.deepen table{
  width:100%;
  margin:1.4em 0 2em;
  border-collapse:collapse;
  font-size:.94rem;
}
.deepen th,.deepen td{
  padding:10px 12px;
  border-bottom:1px solid var(--d-line);
  text-align:left;
  vertical-align:top;
}
.deepen th{
  border-bottom-width:2px;
  color:var(--d-muted);
  font-size:.78rem;
  letter-spacing:.06em;
  text-transform:uppercase;
}
.deepen caption{
  caption-side:bottom;
  padding-top:.7em;
  color:var(--d-muted);
  font-size:.82rem;
  text-align:left;
}
.deepen .callout{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:3px solid var(--d-accent);
  border-radius:0 10px 10px 0;
  background:rgba(23,101,74,.06);
  font-size:.95rem;
}
.deepen .callout p:last-child{margin-bottom:0}
.deepen code{
  padding:.1em .35em;
  border-radius:4px;
  background:rgba(0,0,0,.055);
  font-family:"Cascadia Mono",Consolas,monospace;
  font-size:.9em;
}
.deepen pre{
  overflow-x:auto;
  margin:1.2em 0;
  padding:14px 16px;
  border-radius:10px;
  background:rgba(0,0,0,.055);
  font-size:.86rem;
  line-height:1.6;
}
.deepen pre code{padding:0;background:none}
.deepen hr{
  margin:2.6em 0;
  border:0;
  border-top:1px solid var(--d-line);
}
@media(max-width:720px){
  .deepen{padding:40px 20px 56px;font-size:15.5px}
  .deepen .grid{grid-template-columns:1fr}
  .deepen table{display:block;overflow-x:auto;white-space:nowrap}
  .deepen th,.deepen td{white-space:normal}
}