/* Task-focused reading surface; uses the main site's typography and palette. */
.guide-body [hidden] { display: none !important; }
.guide-main { max-width: 1120px; margin: auto; padding: 106px 28px 80px; }
.guide-intro { max-width: 760px; margin-bottom: 44px; }
.guide-crumb { color: var(--muted-light); font-size: 14px; margin: 0 0 36px; }
.guide-crumb a { text-decoration: none; }
.guide-crumb span { margin: 0 10px; color: #a6b0be; }
.guide-eyebrow { color: #42638b; font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.guide-intro h1 { font-size: clamp(38px, 6vw, 60px); line-height: 1.08; margin: 0 0 18px; }
.guide-lead { max-width: 650px; font-size: 19px; color: var(--muted-light); margin: 0 0 30px; }
.guide-search { max-width: 650px; }
.guide-search label { display: block; font-weight: 600; font-size: 15px; margin-bottom: 8px; }
.guide-search-row { display: flex; gap: 10px; }
.guide-search input { width: 100%; min-width: 0; border: 1px solid #c6d3e1; border-radius: 12px; padding: 14px 16px; font: inherit; background: #f7f9fc; color: var(--ink); }
.guide-search input::placeholder { color: #62728a; opacity: 1; }
.guide-search button { border: 1px solid #c6d3e1; background: white; color: var(--ink); border-radius: 12px; padding: 8px 16px; font: inherit; cursor: pointer; }
#guide-results { font-size: 13px; color: var(--muted-light); margin: 8px 0 0; }
.guide-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 64px; align-items: start; }
.guide-sidebar { position: sticky; top: 88px; max-height: calc(100dvh - 110px); overflow-y: auto; padding: 0 10px 10px 2px; }
.guide-sidebar nav > p { text-transform: uppercase; letter-spacing: .06em; font-size: 11px; font-weight: 700; color: var(--muted-light); margin: 0 0 10px; }
.guide-sidebar nav a { display: block; border-radius: 6px; padding: 7px 10px; margin-left: -10px; color: #384c69; font-size: 14px; text-decoration: none; line-height: 1.4; }
.guide-sidebar nav a:hover { color: var(--navy); background: var(--ice); }
.guide-sample-note { border-top: 1px solid #e0e6ee; padding-top: 18px; margin-top: 22px; font-size: 13px; color: var(--muted-light); }
.guide-sample-note strong { color: var(--ink); }
.guide-sample-note p { margin: 6px 0 0; }
.guide-section { margin-bottom: 44px; scroll-margin-top: 90px; }
.guide-section h2 { margin: 0 0 16px; font-size: 25px; line-height: 1.25; }
.guide-topic { border-top: 1px solid #dbe3ec; scroll-margin-top: 90px; }
.guide-topic:last-child { border-bottom: 1px solid #dbe3ec; }
.guide-topic summary { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 18px 2px; font-weight: 600; line-height: 1.45; list-style: none; cursor: pointer; }
.guide-topic summary::-webkit-details-marker { display: none; }
.guide-topic summary::after { content: "+"; font-size: 22px; line-height: 1; color: #527091; font-weight: 400; flex-shrink: 0; }
.guide-topic[open] summary::after { content: "−"; }
.guide-topic summary:hover { color: #1363b9; }
.guide-topic:target { background: #f5f9fd; border-radius: 8px; padding: 0 14px; margin: 0 -14px; }
.guide-topic-body { padding: 0 2px 24px; font-size: 16px; overflow-wrap: anywhere; }
.guide-topic-summary { color: var(--muted-light); margin: 0 0 18px; }
.guide-topic ol { margin: 0 0 20px; padding-left: 24px; }
.guide-topic li { padding-left: 4px; margin: 10px 0; }
.guide-notes { border-left: 3px solid #b7cfea; padding: 2px 0 2px 16px; margin: 20px 0; color: #445873; font-size: 14px; }
.guide-notes p { margin: 8px 0; }
.guide-practice { padding: 12px 16px; border-radius: 8px; background: #edf4f7; font-size: 14px; }
.guide-related { font-size: 14px; }
.guide-main a:not(.guide-sidebar a):hover { text-decoration: underline; }
.guide-topic-body a, .guide-empty a, .guide-bottom a { color: #1267bf; }
.guide-permalink { font-size: 13px; text-decoration: none; }
.guide-bottom { border-top: 1px solid #dbe3ec; padding-top: 24px; color: var(--muted-light); font-size: 15px; }
.guide-empty { border: 1px solid #dbe3ec; border-radius: 12px; padding: 24px; }
.guide-empty h2 { margin: 0; font-size: 23px; }
.guide-skip { position: fixed; left: 16px; top: -100px; z-index: 100; background: white; color: var(--ink); padding: 10px 16px; border-radius: 8px; }
.guide-skip:focus { top: 10px; }
@media (max-width: 800px) {
  .guide-layout { grid-template-columns: 1fr; gap: 28px; }
  .guide-searching .guide-sidebar { display: none; }
  .guide-sidebar { position: static; max-height: none; overflow: visible; padding: 0; }
  .guide-sidebar nav { display: flex; flex-wrap: wrap; gap: 8px; }
  .guide-sidebar nav > p { flex: 0 0 100%; }
  .guide-sidebar nav a { margin: 0; padding: 8px 12px; background: #f0f4f9; border-radius: 20px; font-size: 13px; }
  .guide-sample-note { display: none; }
  .guide-intro { margin-bottom: 28px; }
}
@media (max-width: 560px) {
  .guide-main { padding: 94px 20px 50px; }
  .guide-body .nav-links > a[href="guide.html"] { display: inline; }
  .guide-body .nav-links { gap: 16px; }
  .guide-lead { font-size: 17px; }
  .guide-crumb { margin-bottom: 24px; }
  .guide-topic summary { font-size: 16px; }
  .guide-section h2 { font-size: 23px; }
}
@media print {
  .nav, .footer, .guide-sidebar, .guide-search, .guide-skip, .guide-permalink { display: none; }
  .guide-main { padding: 0; }
  .guide-layout { display: block; }
  .guide-topic-body { display: block !important; }
}
.guide-motion { display: block; width: 100%; max-width: 480px; height: auto; aspect-ratio: 1; margin: 0 0 20px; border-radius: 12px; background: #e4eef8; cursor: pointer; }