.original-lesson{display:grid;grid-template-columns:1.15fr 1fr;background:#091b37;color:#fff;border-radius:24px;overflow:hidden;margin:0 0 48px;box-shadow:0 20px 50px #091b3717}.original-lesson>div{padding:34px}.original-lesson h2{font-size:clamp(32px,4vw,54px);margin:12px 0}.original-lesson p{color:#d4e2f6}.original-lesson .eyebrow{color:#ffd173}.original-cover{display:flex;flex-direction:column;justify-content:center;background:#06142b;text-decoration:none;color:#fff}.original-cover img{width:100%;height:auto}.original-cover span{padding:20px 28px;font-weight:700;color:#ffd173}.quiz-stage{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(280px,1fr);gap:28px;align-items:start;margin-bottom:64px}.quiz-stage video{display:block;width:100%;border-radius:18px;background:#07172f}.quiz-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;padding:18px 0;font-size:14px}.quiz-panel{border:1px solid #ccdaef;border-radius:20px;padding:28px;background:#f0f5ff;min-height:320px}.quiz-panel h2{font-size:27px;margin:12px 0}.quiz-panel button{width:100%;margin:6px 0;cursor:pointer}.quiz-answer{padding:15px 18px;text-align:left;border:1px solid #b8cbe6;background:white;border-radius:12px;color:#102b4d;font:inherit}.quiz-answer:hover:not(:disabled),.quiz-answer:focus-visible{outline:3px solid #3168ff;outline-offset:2px}.quiz-answer[data-correct=true]{background:#d4f5e6;border-color:#218057;color:#12492f}.quiz-answer[data-wrong=true]{background:#ffe4df;border-color:#be432b;color:#782515}.quiz-panel button:disabled{cursor:default;opacity:1}#quiz-feedback{font-weight:600}#quiz-score{font-size:14px;color:#405c80}.lesson-notes{display:grid;grid-template-columns:1fr 1fr;gap:36px;padding-bottom:70px}.lesson-notes li{margin:12px 0}.lesson-notes>.small{grid-column:1/-1}@media(max-width:850px){.original-lesson,.quiz-stage,.lesson-notes{grid-template-columns:1fr}.original-lesson>div,.quiz-panel{padding:24px}.quiz-stage{gap:12px}.original-lesson{margin-bottom:30px}}