.exam-setup{padding:40px 24px;max-width:700px;margin:0 auto}.exam-setup__card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px}.exam-setup__card h1{margin-bottom:28px}.exam-setup__cat{display:flex;gap:20px;align-items:center;margin-bottom:24px;padding:20px;background:var(--bg-2);border-radius:var(--radius)}.exam-setup__cat-code{width:64px;height:64px;background:var(--gradient-brand);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:800;color:#fff;flex-shrink:0;box-shadow:0 4px 16px #1877f266}.exam-setup__cat h2{font-size:1.2rem;margin-bottom:4px}.exam-setup__cat p{color:var(--text-secondary);font-size:.88rem}.exam-setup__cats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}.exam-setup__cat-btn{padding:8px 18px;border-radius:100px;border:1.5px solid var(--border);background:var(--bg-2);color:var(--text-secondary);font-weight:700;font-family:inherit;cursor:pointer;transition:all .2s}.exam-setup__cat-btn.active,.exam-setup__cat-btn:hover{border-color:var(--brand);background:#1877f21f;color:var(--brand-light)}.exam-setup__sets{margin-bottom:24px}.exam-setup__sets h3{font-size:.95rem;margin-bottom:12px;color:var(--text-secondary)}.exam-setup__sets-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:8px}.exam-setup__set-btn{padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-2);color:var(--text-secondary);font-size:.85rem;font-weight:600;cursor:pointer;text-align:left;transition:all .2s;font-family:inherit}.exam-setup__set-btn.active,.exam-setup__set-btn:hover{border-color:var(--brand);background:#1877f21a;color:var(--brand-light)}.exam-setup__info{background:#f59e0b14;border:1px solid rgba(245,158,11,.2);border-radius:var(--radius-sm);padding:16px;margin-bottom:28px;display:flex;flex-direction:column;gap:10px}.exam-setup__info-item{display:flex;gap:10px;font-size:.88rem;color:var(--text-secondary);align-items:flex-start}.exam-setup__btn{width:100%;justify-content:center}.exam__header{position:fixed;top:70px;left:0;right:0;background:var(--bg-2);border-bottom:1px solid var(--border);z-index:100;padding:12px 0 0}.exam__header-inner{max-width:1400px;margin:0 auto;padding:0 24px 12px;display:flex;align-items:center;gap:20px}.exam__progress-info{display:flex;gap:16px;align-items:center;flex:1}.exam__q-count{font-weight:700;font-size:1rem}.exam__answered{font-size:.85rem;color:var(--text-muted)}.exam__timer{font-size:1.3rem;font-weight:800;color:var(--success);font-variant-numeric:tabular-nums;padding:6px 16px;background:#22c55e1a;border-radius:var(--radius-sm);transition:all .3s ease}.exam__timer--low{color:var(--danger);background:#ef44441a;animation:pulse-brand 1s infinite}.exam__body{display:grid;grid-template-columns:1fr 280px;gap:24px;padding-top:120px;padding-bottom:60px;align-items:start}.exam__question{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px}.exam__critical-badge{background:#dc26261f;border:1px solid rgba(220,38,38,.3);color:var(--critical);padding:10px 16px;border-radius:var(--radius-sm);font-size:.88rem;font-weight:700;margin-bottom:16px}.exam__q-code{font-size:.78rem;color:var(--text-muted);font-weight:600;margin-bottom:8px}.exam__q-content{font-size:1.1rem;font-weight:600;line-height:1.6;margin-bottom:24px;color:var(--text-primary)}.exam__q-image{width:100%;max-height:260px;object-fit:contain;border-radius:var(--radius-sm);margin-bottom:20px;background:var(--bg-2)}.exam__options{display:flex;flex-direction:column;gap:10px;margin-bottom:28px}.exam__option{display:flex;align-items:center;gap:14px;padding:14px 16px;border:2px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-2);cursor:pointer;transition:all .18s ease;text-align:left;font-family:inherit}.exam__option:hover{border-color:var(--brand);background:#1877f20f}.exam__option--selected{border-color:var(--brand);background:#1877f21f}.exam__option-label{width:32px;height:32px;background:var(--bg-3);border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.88rem;color:var(--text-secondary);flex-shrink:0;transition:all .18s}.exam__option--selected .exam__option-label{background:var(--brand);color:#fff}.exam__option-content{font-size:.95rem;color:var(--text-primary);line-height:1.5}.exam__nav{display:flex;justify-content:space-between;gap:12px}.exam__navigator{position:sticky;top:130px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.exam__navigator h4{font-size:.88rem;color:var(--text-secondary);margin-bottom:14px;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.exam__nav-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-bottom:16px}.exam__nav-btn{width:36px;height:36px;border-radius:8px;border:1.5px solid var(--border);background:var(--bg-2);color:var(--text-muted);font-size:.8rem;font-weight:600;cursor:pointer;transition:all .15s;font-family:inherit}.exam__nav-btn.answered{background:#1877f233;border-color:var(--brand);color:var(--brand-light)}.exam__nav-btn.current{background:var(--brand);border-color:var(--brand);color:#fff}.exam__nav-btn.critical{border-color:var(--critical)}.exam__nav-btn.critical:not(.answered):not(.current){background:#dc262614;color:var(--critical)}.exam__nav-legend{display:flex;flex-direction:column;gap:8px;padding-top:12px;border-top:1px solid var(--border)}.exam__legend-item{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--text-muted)}.dot{width:10px;height:10px;border-radius:3px;background:var(--border);border:1.5px solid var(--border-light)}.dot.answered{background:#1877f233;border-color:var(--brand)}.dot.critical{background:#dc262633;border-color:var(--critical)}@media(max-width:968px){.exam__body{grid-template-columns:1fr}.exam__navigator{position:static}}@media(max-width:640px){.exam-setup{padding:20px 16px}.exam-setup__card{padding:24px 20px}.exam__header-inner{flex-wrap:wrap}.exam__question{padding:20px}}