.page-module__RJmHAq__lessonView{height:calc(100vh - var(--header-height));background:var(--bg-primary);flex-direction:column;display:flex}.page-module__RJmHAq__lessonHeader{border-bottom:1px solid var(--border-color);align-items:center;padding:1rem;display:flex}.page-module__RJmHAq__backBtn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;margin-right:1rem;font-size:1rem}.page-module__RJmHAq__lessonHeader h2{flex:1;margin:0;font-size:1.2rem}.page-module__RJmHAq__progress{color:var(--text-secondary);font-variant-numeric:tabular-nums}.page-module__RJmHAq__lessonBody{flex:1;justify-content:center;padding:2rem;display:flex;overflow-y:auto}@media (min-width:1200px){.page-module__RJmHAq__lessonBody{padding:2.5rem 3rem}}.page-module__RJmHAq__stepContent{width:100%;max-width:900px}@media (min-width:1400px){.page-module__RJmHAq__stepContent{max-width:1000px}}.page-module__RJmHAq__stepContent h3{margin-bottom:1rem}.page-module__RJmHAq__stepText{color:var(--text-secondary);margin-bottom:1rem;font-size:1.1rem;line-height:1.6}.page-module__RJmHAq__lessonNav{border-top:1px solid var(--border-color);justify-content:space-between;padding:1rem 2rem;display:flex}.page-module__RJmHAq__prevBtn,.page-module__RJmHAq__nextBtn{cursor:pointer;border:none;border-radius:8px;padding:.8rem 1.5rem;font-size:1rem;font-weight:600}.page-module__RJmHAq__prevBtn{background:var(--bg-secondary);color:var(--text-primary)}.page-module__RJmHAq__nextBtn{background:var(--color-brand-primary);color:#fff}.page-module__RJmHAq__nextBtn:disabled{opacity:.5;cursor:not-allowed}.page-module__RJmHAq__quiz{background:var(--bg-secondary);border-radius:12px;padding:1.5rem}.page-module__RJmHAq__question{margin-bottom:1rem;font-weight:600}.page-module__RJmHAq__options{gap:.8rem;margin-bottom:1rem;display:grid}.page-module__RJmHAq__option{border:1px solid var(--border-color);background:var(--bg-primary);text-align:left;cursor:pointer;border-radius:8px;padding:1rem;transition:all .2s}.page-module__RJmHAq__option:hover:not(:disabled){border-color:var(--color-brand-primary)}.page-module__RJmHAq__correct{background:#a3e63533;border-color:#a3e635}.page-module__RJmHAq__wrong{background:#ef444433;border-color:#ef4444}.page-module__RJmHAq__explanation{background:var(--bg-primary);border-radius:8px;margin-top:1rem;padding:1rem}.page-module__RJmHAq__boardContainer{flex-direction:column;align-items:center;gap:2rem;padding-top:70px;padding-bottom:20px;display:flex;position:relative}.page-module__RJmHAq__boardContainer>div{overflow:visible}.page-module__RJmHAq__numpad{gap:1rem;display:flex}.page-module__RJmHAq__numBtn{border:1px solid var(--border-color);background:var(--bg-secondary);width:48px;height:48px;color:var(--text-primary);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;font-size:1.2rem;font-weight:600;transition:all .1s;display:flex}.page-module__RJmHAq__numBtn:active{background:var(--bg-hover);transform:scale(.95)}.page-module__RJmHAq__successMessage{color:#a3e635;font-size:1.1rem;font-weight:700;animation:.5s page-module__RJmHAq__bounce}@keyframes page-module__RJmHAq__bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}.page-module__RJmHAq__container{max-width:1200px;margin:0 auto;padding:2rem}.page-module__RJmHAq__title{margin-bottom:.5rem;font-size:2.5rem}.page-module__RJmHAq__subtitle{color:var(--text-secondary);margin-bottom:3rem}.page-module__RJmHAq__lessonGrid{grid-template-columns:repeat(2,1fr);gap:1.5rem;display:grid}@media (max-width:768px){.page-module__RJmHAq__lessonGrid{grid-template-columns:1fr}}.page-module__RJmHAq__lessonCard{background:var(--bg-secondary);border:1px solid var(--border-color);cursor:pointer;border-radius:16px;padding:1.5rem;transition:all .2s}.page-module__RJmHAq__lessonCard:hover{border-color:var(--color-brand-primary);transform:translateY(-2px);box-shadow:0 8px 24px #0000001a}.page-module__RJmHAq__lessonDifficulty{text-transform:capitalize;border-radius:100px;margin-bottom:1rem;padding:.25rem .75rem;font-size:.8rem;font-weight:600;display:inline-block}[data-difficulty=beginner] .page-module__RJmHAq__lessonDifficulty{color:#a3e635;background:#a3e63533}[data-difficulty=intermediate] .page-module__RJmHAq__lessonDifficulty{color:#facc15;background:#facc1533}[data-difficulty=advanced] .page-module__RJmHAq__lessonDifficulty{color:#ef4444;background:#ef444433}.page-module__RJmHAq__lessonMeta{color:var(--text-secondary);margin-top:1rem;font-size:.9rem}.page-module__RJmHAq__hintText{color:var(--text-secondary);background:#3b82f61a;border-left:3px solid #3b82f6;border-radius:0 8px 8px 0;max-width:100%;padding:.75rem 1rem;font-size:.95rem}.page-module__RJmHAq__goalText{color:var(--text-primary);background:#a3e63526;border:1px solid #a3e63566;border-radius:8px;padding:.75rem 1rem;font-size:.95rem;font-weight:500}.page-module__RJmHAq__demoIndicator{color:#9333ea;background:#9333ea1a;border:1px solid #9333ea4d;border-radius:100px;align-items:center;gap:.5rem;margin-bottom:1rem;padding:.3rem .8rem;font-size:.75rem;font-weight:500;display:inline-flex}.page-module__RJmHAq__demoIndicator:before{content:"👁️"}.page-module__RJmHAq__progressBar{background:var(--bg-secondary);border-radius:2px;width:100%;height:4px;margin-top:.5rem;overflow:hidden}.page-module__RJmHAq__progressFill{background:var(--color-brand-primary);border-radius:2px;height:100%;transition:width .3s}