/* Lesson content inherits the shared public-site header, type and navigation. */
.guide-main {
  max-width: 850px;
  margin-inline: auto;
  padding: 34px 28px 68px;
}
.guide-main .crumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 12px;
}
.guide-main .crumb a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.guide-main .crumb a:hover { color: var(--green); text-decoration: underline; }
.guide-main h1 { max-width: 20ch; margin-bottom: 20px; font-size: 50px; line-height: 1.15; }
.guide-main .intro { max-width: 64ch; margin-bottom: 18px; font-size: 17px; line-height: 1.85; }
.guide-main .lesson-meta { margin-bottom: 23px; color: var(--muted); font-size: 12px; }
.guide-main article { max-width: 730px; margin-top: 43px; }
.guide-main article section { margin-bottom: 39px; }
.guide-main h2 { margin-bottom: 16px; font-size: 24px; line-height: 1.35; letter-spacing: -.025em; }
.guide-main p { margin-bottom: 17px; color: var(--muted); font-size: 15px; line-height: 1.85; }
.guide-main pre { overflow-x: auto; margin: 23px 0 20px; padding: 17px 20px; border: 1px solid #d8e6d2; border-radius: 8px; color: #285b30; background: #f0f7ed; font: 13px/1.8 var(--mono); }
.guide-main code { font-family: var(--mono); font-size: 1em; }
.guide-main li { margin-bottom: 13px; padding-left: 3px; color: var(--muted); font-size: 14px; }
.guide-main li b { color: var(--ink); }
.guide-main ul { padding-left: 22px; }
.guide-main .tasks { list-style: none; margin: 0; padding: 0; }
.guide-main .tasks li { margin: 0; padding: 18px 0; border-top: 1px solid var(--line); }
.guide-main .tasks li:last-child { border-bottom: 1px solid var(--line); }
.guide-main .tasks b { display: block; margin-bottom: 6px; font-size: 12px; font-weight: 800; }
.guide-main .tasks p { margin: 0; font-size: 14px; }
.guide-main aside { margin: 34px 0; padding: 25px 28px; border: 1px solid var(--line); border-radius: 12px; background: #f4f8f5; }
.guide-main aside h2 { font-size: 19px; }
.guide-main aside p { margin-bottom: 12px; font-size: 13px; line-height: 1.8; }
.guide-main aside p:last-child { margin-bottom: 0; }
.guide-main .next { padding-top: 29px; border-top: 1px solid var(--line); }
.guide-main .practice-note { max-width: 64ch; margin-top: 15px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.guide-main .related { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 28px; }
.guide-main .related a { display: block; padding: 17px 18px; border: 1px solid var(--line); border-radius: 8px; color: var(--green); background: #fff; font-size: 13px; font-weight: 750; text-decoration: none; }
.guide-main .related a:hover { border-color: var(--green); background: #f4f8f5; }
.guide-main .related span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 11px; font-weight: 500; }
.guide-main .related b { color: var(--forest); font-size: 14px; }
.guide-main .lesson-index { list-style: none; margin: 32px 0; padding: 0; }
.guide-main .lesson-index li { margin: 0; padding: 0; border-top: 1px solid var(--line); }
.guide-main .lesson-index li:last-child { border-bottom: 1px solid var(--line); }
.guide-main .lesson-index a { display: flex; align-items: center; gap: 20px; min-height: 75px; padding: 15px 12px; color: var(--ink); text-decoration: none; }
.guide-main .lesson-index a:hover { background: #f4f8f5; }
.guide-main .lesson-number { flex: none; width: 21px; color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.guide-main .lesson-detail { min-width: 0; }
.guide-main .lesson-index b { display: block; font-size: 14px; font-weight: 750; }
.guide-main .lesson-index small { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; }
@media (max-width: 767px) {
  .guide-main { padding: 22px 24px 52px; }
  .guide-main h1 { font-size: 39px; letter-spacing: -.035em; }
  .guide-main .intro { font-size: 16px; }
}
@media (max-width: 460px) {
  .guide-main { padding-inline: 22px; }
  .guide-main h1 { font-size: 35px; }
  .guide-main h2 { font-size: 22px; }
  .guide-main .crumb { gap: 9px; font-size: 11px; }
  .guide-main .related { grid-template-columns: 1fr; }
  .guide-main aside { padding: 22px; }
  .guide-main pre { padding: 14px; font-size: 11px; }
  .guide-main .lesson-index a { gap: 12px; padding-inline: 0; }
  .guide-main .lesson-index b { font-size: 13px; }
}