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button{background:var(--accent);color:var(--foreground)}.ns-confirm{z-index:5;background:var(--card);border:2px solid var(--foreground);border-radius:14px;margin-top:12px;padding:16px;position:sticky;top:72px}.ns-confirm .ns-actions{justify-content:flex-end;margin-top:8px}.ns-questions{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px;margin:16px 0;padding:0;list-style:none;display:grid}.ns-questions li{border-bottom:1px solid var(--border);grid-template-columns:minmax(0,1fr) 8.5em;align-items:center;gap:12px;padding:8px 0;display:grid}.ns .ns-questions label{font-variant-numeric:tabular-nums;gap:10px;width:auto;margin:0;font-size:1.1rem;font-weight:600;display:flex}.ns-q-number{min-width:2.2em;color:var(--muted-foreground)}.ns .ns-questions input{flex:none;padding:8px 10px;font-size:1.1rem}.ns-starred label{color:var(--primary)}.ns-star-icon{vertical-align:-2px;display:inline}.ns-filters{border:0;flex-wrap:wrap;gap:8px;margin:24px 0 8px;padding:0;display:flex}.ns-filters button{min-height:40px;padding:8px 12px}.ns-review-correct summary{color:var(--club-green)}.ns-review-wrong summary,.ns-review-skipped summary{color:var(--destructive)}.ns-review-unreached summary{color:var(--muted-foreground)}.ns details .ns-secondary{min-height:40px}@media (max-width:850px){.ns-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ns-challenge{flex-wrap:wrap}.ns-challenge>div{min-width:min(220px,100%)}.ns-challenge button{flex-basis:100%}}@media (max-width:560px){.ns{padding:16px}.ns-grid{grid-template-columns:1fr}.ns-heading>svg{display:none}.ns-work{padding:20px}.ns-challenge{padding:22px}.ns-stats{gap:20px}.ns form button{width:100%}.ns-try>div{flex-direction:column}.ns-section-title{align-items:flex-start}.ns-questions{grid-template-columns:1fr}.ns-questions li{grid-template-columns:minmax(0,1fr) 7em}.ns-paper-bar{gap:8px 12px;padding:8px 12px}.ns-paper-bar span{font-size:.875rem}.ns-paper-bar button{width:auto;min-height:40px}}.ns-next{background:var(--card);border:1px solid var(--border);border-left:6px solid var(--primary);border-radius:20px;flex-direction:column;align-items:flex-start;gap:12px;padding:28px;display:flex}.ns-next h2{margin:0;font-size:1.6rem}.ns-next p{margin:0}.ns-today-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:18px;display:grid}.ns-today-grid .ns-card{gap:8px}.ns-today-grid h3{margin:0}.ns-keys{border:0;flex-wrap:wrap;gap:8px;min-width:0;margin:10px 0 0;padding:0;display:flex}.ns .ns-keys button{width:auto;min-width:48px;min-height:44px;font-size:1.1rem}.ns-shelf{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin:12px 0 4px;padding:0;list-style:none;display:grid}.ns-shelf li{border:1px dashed var(--border);color:var(--muted-foreground);border-radius:14px;flex-direction:column;gap:4px;padding:14px;display:flex}.ns-shelf li.is-earned{border-style:solid;border-color:var(--primary);background:var(--secondary);color:var(--foreground)}.ns-shelf span,.ns-shelf small{font-size:.875rem}.ns-report{margin-top:24px}@media (max-width:850px){.ns-today-grid{grid-template-columns:1fr}}@media (max-width:560px){.ns-next{padding:20px}}.ns .ns-read-open{margin-bottom:10px}.ns-lesson{max-width:760px;scroll-margin-top:16px}.ns .ns-lesson-back{gap:8px;margin:8px 0 0}.ns-lesson h2{margin:24px 0 8px;font-size:1.75rem}.ns-lesson h2:focus{outline:none}.ns-lesson h3{margin:28px 0 10px;font-size:1.1rem}.ns-lesson-rule{margin:0;font-size:1.1rem;line-height:1.6}.ns-lesson-facts{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:6px;margin:0;padding:0;list-style:none;display:grid}.ns-lesson-facts li{background:var(--secondary);border-radius:10px;padding:8px 10px;font-size:.9rem;font-weight:650;line-height:1.4}.ns-lesson-worked{margin:0;padding:0;list-style:none}.ns-lesson-kind{color:var(--muted-foreground);font-size:.875rem;font-weight:700;display:block}.ns-lesson-worked summary{list-style:none}.ns-lesson-worked summary::-webkit-details-marker{display:none}.ns-lesson-question:before{content:"▸ ";content:"▸ " / "";color:var(--primary)}.ns-lesson-worked details[open] .ns-lesson-question:before{content:"▾ ";content:"▾ " / ""}.ns-lesson-worked details ol{margin:12px 0 0;padding-left:24px;line-height:1.7;list-style:decimal}.ns-lesson-worked details li+li{margin-top:6px}.ns-lesson-mistake{margin:28px 0 0;line-height:1.6}.ns-best{margin:0 0 8px;font-weight:600}.ns-result-next{border:1px solid var(--border);border-radius:16px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 16px;margin:16px 0;padding:16px;display:flex}.ns-result-next p{margin:0}