.video-lesson{max-width:1100px;color:var(--color-text-primary)}.video-lesson h1{max-width:950px;margin:1rem 0;font-size:clamp(1.8rem,4vw,2.8rem);font-weight:750;line-height:1.2}.video-lesson p{margin:.75rem 0;line-height:1.75}.video-lesson-lead{max-width:850px;font-size:1.1rem}.video-lesson a:not(.pub-resource-card):not(.pub-guide-conversion-button){text-underline-offset:3px;text-decoration:underline}.video-lesson-frame{aspect-ratio:16/9;background:#161616;border-radius:12px;margin-top:1.5rem;overflow:hidden}.video-lesson-frame iframe{border:0;width:100%;height:100%}.video-lesson-status{color:var(--color-text-subtle);font-size:.875rem}.video-lesson-preview{color:#9a3412;font-weight:700}.video-lesson-chapters{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem;margin:1rem 0 2rem;display:grid}.video-lesson-chapters>div{border:1px solid var(--color-border);border-radius:10px;align-items:center;gap:.5rem;padding:.35rem;display:flex}.video-lesson-chapters button{text-align:left;cursor:pointer;border-radius:6px;flex:1;min-height:48px;padding:.5rem;font-weight:600}.video-lesson-chapters button[aria-pressed=true]{color:#9a3412;background:#fff0e5}.video-lesson-chapters button span{font-variant-numeric:tabular-nums;color:#9a3412;margin-right:.4rem}.video-lesson-chapters a{align-items:center;min-height:44px;padding:.5rem;font-size:.8rem;display:flex}.video-lesson-reading{max-width:760px;margin:auto}.video-lesson-reading>section,.video-lesson-support{margin-top:2.5rem}.video-lesson h2{margin-bottom:.75rem;font-size:1.5rem;font-weight:700;line-height:1.35}.video-lesson h3{font-size:1.1rem;font-weight:700;line-height:1.45}.video-lesson-note{border-left:3px solid #df6a20;margin:1.5rem 0;padding-left:1rem}.video-lesson-downloads{gap:.6rem;margin:1rem 0;display:grid}.video-lesson-downloads a{border:1px solid var(--color-border);border-radius:8px;padding:.75rem}.video-lesson-check{border:1px solid var(--color-border);border-radius:12px;margin:1rem 0;padding:1.2rem}.video-lesson-check summary{cursor:pointer;color:#9a3412;min-height:44px;padding:.7rem 0;font-weight:650}.video-lesson-support{color:#252525;background:#fff6ee;border:1px solid #f3bd94;border-radius:12px;padding:1.5rem}.video-lesson :is(button,a,summary):focus-visible{outline-offset:3px;outline:3px solid #c55008}@media (max-width:640px){.video-lesson-chapters{grid-template-columns:1fr}.video-lesson h2{font-size:1.3rem}.video-lesson-note{padding-left:.8rem}}@media print{.video-lesson-player,.video-lesson-preview{display:none}.video-lesson-reading{max-width:none}.video-lesson-check{break-inside:avoid}.video-lesson details>p{display:block}}