.video-lesson{color:var(--ink)}
.video-lesson .lesson-breadcrumbs{width:min(calc(100% - 128px),1120px);margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;padding:28px 0;font-size:13px;color:var(--muted)}
.video-lesson .lesson-breadcrumbs a{display:inline-flex;align-items:center;min-height:44px;text-underline-offset:4px}
.video-lesson .lesson-watch{width:min(calc(100% - 128px),1120px);margin:0 auto 72px;display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,350px);align-items:center;gap:64px}
.video-lesson .lesson-intro h1{font-size:clamp(52px,5.3vw,78px);line-height:1.02;color:var(--forest)}
.video-lesson .lesson-intro>p{max-width:48ch;font-size:17px;line-height:1.75;margin:0 0 24px}
.video-lesson .lesson-intro .eyebrow{font-size:11px;line-height:1.6}
.video-lesson .lesson-intro .lesson-lede{font-family:var(--serif);font-size:clamp(29px,2.8vw,38px);line-height:1.16;color:var(--forest)}
.video-lesson .text-link{display:inline-flex;align-items:center;min-height:44px;font-size:12px;line-height:1.6}
.video-lesson .lesson-intro>a{margin-top:0}
.video-lesson .lesson-intro .lesson-note{font-size:14px;margin-top:24px;color:var(--muted)}
.video-lesson .lesson-screen{margin:0;min-width:0;justify-self:end;width:100%;max-width:350px}
.video-lesson video{display:block;width:100%;height:auto;max-height:72svh;aspect-ratio:9/16;object-fit:contain;background:var(--paper);border:1px solid var(--line)}
.video-lesson figcaption{font-size:13px;line-height:1.7;color:var(--muted);margin-top:16px}
.video-lesson .lesson-screen figcaption{text-align:center}
.video-lesson .lesson-reading{width:min(calc(100% - 128px),760px);margin:0 auto;padding-top:56px;border-top:1px solid var(--line)}
.video-lesson .lesson-reading h2{font-size:clamp(34px,3.4vw,46px);line-height:1.08;margin:0 0 24px}
.video-lesson .lesson-reading>h2:not(:first-of-type){margin-top:56px}
.video-lesson .lesson-reading p{font-size:17px;line-height:1.8;margin:0 0 24px}
.video-lesson .lesson-position{max-width:480px;margin:32px auto}
.video-lesson .lesson-position svg{display:block;width:100%;height:auto}
.video-lesson .lesson-position figcaption{margin-top:16px}
.video-lesson .lesson-reading .lesson-note{font-size:14px;color:var(--muted)}
.video-lesson .lesson-solution{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:32px 0}
.video-lesson summary{cursor:pointer;min-height:52px;padding:16px 0;font-size:16px;font-weight:600;line-height:1.7}
.video-lesson .lesson-solution[open]{padding-bottom:8px}
.video-lesson .lesson-solution>p{margin-top:24px}
.video-lesson .lesson-solution ol{list-style:none;padding-left:0;margin:24px 0 0}
.video-lesson .lesson-solution li{padding-left:0;margin-bottom:32px}
.video-lesson .lesson-solution h3{font-family:var(--sans);font-size:18px;letter-spacing:0;line-height:1.5;margin-bottom:12px}
.video-lesson .lesson-download{margin-top:24px}
.video-lesson .lesson-invitation{width:min(calc(100% - 128px),920px);margin:72px auto 32px;padding:40px;background:var(--paper-deep);border:1px solid var(--line)}
.video-lesson .lesson-invitation h2{font-size:clamp(34px,3.5vw,48px);margin-bottom:24px;line-height:1.1}
.video-lesson .lesson-invitation>p:not(.eyebrow){font-size:17px;line-height:1.8;max-width:62ch;margin:0 0 24px}
.video-lesson .lesson-invitation .button{min-height:48px;max-width:100%;white-space:normal;text-align:center;line-height:1.6;margin:0}
.video-lesson .lesson-back{width:min(calc(100% - 128px),920px);margin:24px auto 64px}
.lesson-index-feature{display:grid;grid-template-columns:minmax(180px,.75fr) minmax(0,1.25fr);gap:40px;align-items:center;padding:36px 0;margin-top:40px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lesson-index-feature img{width:100%;height:auto;aspect-ratio:16/9;object-fit:contain}
.lesson-index-feature h2{font-size:clamp(30px,3vw,40px);line-height:1.08;margin-bottom:20px}
.lesson-index-feature p:not(.eyebrow){font-size:16px;line-height:1.7;margin:0 0 24px}
.lesson-index-feature .text-link{display:inline-flex;align-items:center;min-height:44px;font-size:12px;line-height:1.6;margin:0}
.lesson-index-feature .eyebrow{font-size:11px}
@media(max-width:780px){
 .video-lesson .lesson-breadcrumbs,.video-lesson .lesson-watch,.video-lesson .lesson-reading,.video-lesson .lesson-invitation,.video-lesson .lesson-back{width:calc(100% - 48px)}
 .video-lesson .lesson-watch{grid-template-columns:minmax(0,1fr);gap:28px;margin-bottom:48px}
 .video-lesson .lesson-screen{justify-self:center;max-width:320px}
 .video-lesson .lesson-intro h1{font-size:clamp(46px,10vw,64px)}
 .video-lesson .lesson-intro .lesson-lede{font-size:29px}
 .video-lesson .lesson-intro>p{font-size:16px;line-height:1.75}
 .video-lesson .lesson-intro .lesson-note{font-size:13px}
 .video-lesson .lesson-reading{padding-top:40px}
 .video-lesson .lesson-reading p{font-size:16px}
 .video-lesson .lesson-invitation{padding:28px 24px;margin-top:48px}
 .lesson-index-feature{grid-template-columns:minmax(0,1fr);gap:24px;margin-top:32px;padding:28px 0}
}
@media(prefers-reduced-motion:reduce){.video-lesson{scroll-behavior:auto}}