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16px}.nm-challenge-result{margin-top:12px;padding:10px;border-radius:10px;font-size:14px;font-weight:700}.nm-challenge-result.nm-correct{background:#f0fdf4;color:#166534;border:1px solid #86efac}.nm-challenge-result.nm-incorrect{background:#fef2f2;color:#991b1b;border:1px solid #fca5a5}.nm-discovery{text-align:center;padding:20px 12px}.nm-discovery-icon{font-size:56px;margin-bottom:12px;animation:nm-bounce 2s ease infinite}@keyframes nm-bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.nm-discovery h2{font-size:22px;font-weight:800;color:#1e293b;margin:0 0 16px}.nm-rule-item{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:14px;line-height:1.5}.nm-rule-icon{font-size:22px;flex-shrink:0}.nm-demo-row{display:flex;align-items:center;justify-content:center;gap:6px;margin:14px 0;flex-wrap:wrap}.nm-demo-digit{width:46px;height:52px;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;border-radius:10px;transition:all .6s ease}.nm-demo-digit.nm-desc{background:linear-gradient(145deg,#fef3c7,#fde68a);border:2px solid #f59e0b;color:#92400e}.nm-demo-digit.nm-asc{background:linear-gradient(145deg,#dbeafe,#bfdbfe);border:2px solid #3b82f6;color:#1e3a8a}.nm-demo-digit.nm-neutral{background:#f1f5f9;border:2px solid #cbd5e1;color:#475569}.nm-demo-arrow{font-size:22px;color:#94a3b8;font-weight:700}.nm-demo-label{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;margin-bottom:4px;text-align:center}.nm-demo-label.nm-gold{color:#b45309}.nm-demo-label.nm-blue{color:#2563eb}.nm-qf-header{text-align:center;margin-bottom:16px}.nm-qf-header h2{font-size:20px;font-weight:800;color:#1e293b;margin:0 0 4px}.nm-qf-prompt{text-align:center;font-size:16px;font-weight:700;color:#334155;margin-bottom:12px;padding:10px;background:linear-gradient(135deg,#fefce8,#fef9c3);border-radius:12px;border:1px solid #fde047}.nm-qf-prompt.nm-prompt-blue{background:linear-gradient(135deg,#eff6ff,#dbeafe);border-color:#93c5fd}.dark .nm-digit-card{background:linear-gradient(145deg,#312e81,#3730a3);border-color:#818cf8;color:#c7d2fe}.dark .nm-digit-card.nm-used{opacity:.2}.dark .nm-slot{background:#1e293b;border-color:#475569;color:#e2e8f0}.dark .nm-slot.nm-filled{background:linear-gradient(145deg,#14532d,#166534);border-color:#4ade80;color:#bbf7d0}.dark .nm-slot.nm-next-empty{background:#312e81;border-color:#818cf8}.dark .nm-found-grid{background:#1e293b;border-color:#334155}.dark .nm-found-chip{background:#0f172a;border-color:#334155;color:#e2e8f0}.dark .nm-found-title{color:#e2e8f0}.dark .nm-found-chip.nm-greatest{background:linear-gradient(135deg,#422006,#451a03);border-color:#b45309;color:#fde68a}.dark .nm-found-chip.nm-smallest{background:linear-gradient(135deg,#1e3a5f,#1e40af);border-color:#3b82f6;color:#bfdbfe}.dark .nm-challenge-card{background:#1e293b;border-color:#334155}.dark 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