/* getplotlay.com/learn: the lesson pages, on top of /style.css (the drawing-set look). Built by scripts/build_learn.mjs. */
.skip { position: absolute; left: -999px; top: 8px; z-index: 20; background: var(--ink); color: var(--film); padding: 8px 12px; font: 600 14px var(--mono); }
.skip:focus { left: 24px; }
.learn-h1 { font-size: clamp(34px, 5vw, 52px); text-transform: uppercase; margin: 0 0 10px; }
.learn-home .lead { font-size: 18px; max-width: 760px; margin: 0 0 24px; }
.learn-h2 { font-size: clamp(24px, 3vw, 32px); margin: 40px 0 16px; }
.ln-paths a .ln-meta { color: var(--ink); }
.ln-search { margin: 0 0 8px; max-width: 760px; }
.ln-search label { display: block; font: 600 12px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 6px; }
.ln-search input { width: 100%; font: 17px var(--sans); padding: 12px 14px; border: 2px solid var(--ink); background: #fffdf7; color: var(--text); border-radius: 0; }
.ln-search input:focus { outline: 3px solid var(--red); outline-offset: 1px; }
.ln-list { display: flex; flex-direction: column; border-top: 2px solid var(--ink); margin: 10px 0 18px; }
.ln-list:empty { display: none; }
.ln-row { display: flex; align-items: center; gap: 14px; padding: 12px 10px; border-bottom: 1px solid var(--rule); text-decoration: none; color: var(--text); background: rgba(250, 248, 241, .7); }
.ln-row:hover, .ln-row:focus-visible { background: #fff; }
.ln-n { flex: none; width: 30px; height: 30px; border: 1.5px solid var(--ink); border-radius: 50%; display: grid; place-items: center; font: 600 13px var(--mono); color: var(--ink); }
.ln-t { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.ln-t b { font: 700 17px var(--cond); text-transform: uppercase; color: var(--ink-2); }
.ln-t span { font-size: 14.5px; color: var(--muted); }
.ln-min { flex: none; font: 500 13px var(--mono); color: var(--muted); }
.ln-path { margin-top: 26px; }
.learn-path .btn-ex { margin-top: 6px; }
.ln-facts { display: grid; grid-template-columns: 1fr auto; border: 2px solid var(--ink); margin: 18px 0 18px; background: #faf8f1; }
.ln-facts div { padding: 10px 14px; border-right: 1px solid var(--rule); font-size: 16px; }
.ln-facts div:last-child { border-right: 0; }
.ln-facts div:nth-child(3) { grid-column: 1 / -1; border-top: 1px solid var(--rule); border-right: 0; }
.ln-facts i { display: block; font: normal 500 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.guide h2.ln-sub { font-size: 24px; margin: 34px 0 12px; }
.learn-lesson b.ui { font-weight: 600; color: var(--ink-2); background: rgba(29, 79, 145, .09); padding: 0 4px; border: 1px solid var(--rule); white-space: nowrap; }
.learn-lesson ol.steps-g figure { margin: 14px 0 6px; }
.ln-clip { margin: 18px 0 8px; }
.ln-clip video { display: block; width: 100%; height: auto; border: 2px solid var(--ink); background: #fff; }
.ln-pause { font: 600 12px var(--mono); margin-left: 8px; border: 1px solid var(--ink); background: none; color: var(--ink); padding: 2px 8px; cursor: pointer; }
.ln-tips { border-left: 3px solid var(--ink); padding: 2px 16px 4px; background: rgba(29, 79, 145, .05); margin: 22px 0; }
.ln-tips.ln-warn { border-color: var(--red); background: rgba(207, 59, 38, .05); }
.ln-tips h2.ln-sub { font-size: 18px; margin: 12px 0 4px; }
.ln-tips ul { margin: 4px 0 10px; padding-left: 20px; }
.ln-check { border: 2px solid var(--ink); background: #faf8f1; padding: 10px 18px 14px; margin: 28px 0; }
.ln-check legend { font: 700 16px var(--cond); text-transform: uppercase; color: var(--ink-2); padding: 0 6px; }
.ln-check p { margin: 6px 0 10px; }
.ln-check label { display: flex; gap: 10px; align-items: flex-start; padding: 6px 0; cursor: pointer; font-size: 16px; }
.ln-check input { margin-top: 5px; accent-color: var(--ink); }
.ln-ans { font-weight: 600; }
.ln-ans.ok { color: #1f7a3a; } .ln-ans.no { color: var(--red); }
.ln-ver { margin-top: 26px; }
.register a[aria-current="page"] { background: var(--ink); color: var(--film); } .register a[aria-current="page"] i { color: var(--film); }
@media (max-width: 680px) {
  .ln-row { gap: 10px; padding: 10px 6px; align-items: flex-start; }
  .ln-min { font-size: 12px; }
  .ln-facts { grid-template-columns: 1fr; }
  .ln-facts div { border-right: 0; border-bottom: 1px solid var(--rule); }
  .ln-facts div:last-child { border-bottom: 0; }
  .learn-lesson b.ui { white-space: normal; }
  .guide-nav { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { .ln-clip video { display: none; } .ln-clip::before { content: ''; } }