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var(--border);background:var(--surface);border-radius:8px;margin-bottom:12px;padding:22px}.q-meta{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:12px;display:flex}.tag{border-radius:6px;padding:3px 10px;font-size:11px;font-weight:800}.tag-theory,.tag-3v,.tag-cnn,.tag-img{color:var(--mid);background:#eef1fb}.tag-practice,.tag-quality,.tag-txt,.tag-review{background:var(--mint-light);color:var(--mint-dark)}.tag-trap,.tag-af,.tag-bound{background:var(--red-light);color:var(--red)}.tag-overfit,.tag-ocr{background:var(--amber-light);color:#925d00}.tag-lm{background:var(--purple-light);color:var(--purple)}.tag-num{color:var(--muted);font-family:var(--mono);font-size:11px}.scenario{border-left:3px solid var(--border);background:var(--bg);color:var(--muted);border-radius:6px;margin-bottom:14px;padding:12px 14px;font-size:13px}.scenario strong{color:var(--text)}.q-text{color:var(--text);margin:0 0 15px;font-size:15px;font-weight:700;line-height:1.6}.opts{flex-direction:column;gap:7px;display:flex}.opt{border:1px solid var(--border);background:var(--bg);color:var(--text);cursor:pointer;text-align:left;border-radius:8px;padding:11px 14px}.opt:hover:not(:disabled){border-color:var(--mid);background:#f0f4ff}.opt:disabled{cursor:default}.opt.correct{border-color:var(--green);background:var(--green-light);color:#1a5c35}.opt.wrong{border-color:var(--red);background:var(--red-light);color:#7a1e1e}.feedback{display:none}.feedback.show{border-radius:8px;margin-top:12px;padding:11px 14px;font-size:13px;line-height:1.65;display:block}.feedback.ok{background:var(--green-light);color:#1a5c35;border:1px solid #a8d9bb}.feedback.no{background:var(--red-light);color:#7a1e1e;border:1px solid #f5b8b8}.empty{color:var(--muted);text-align:center;border:1px dashed #cbd5e1;border-radius:8px;padding:40px 20px}.review-section{margin-top:30px}.review-header{align-items:center;gap:12px;margin-bottom:14px;display:flex}.review-header h2{color:var(--navy);margin:0;font-size:17px}.review-count{background:var(--red-light);color:var(--red);font-family:var(--mono);border-radius:6px;padding:3px 10px;font-size:12px;font-weight:700}.review-card{border:1px solid var(--red);background:var(--surface);border-radius:8px;margin-bottom:10px;padding:18px}.review-q{color:var(--text);margin-bottom:10px;font-weight:700;line-height:1.55}.review-ans{border-radius:6px;margin-bottom:6px;padding:7px 12px;font-size:13px}.review-correct{background:var(--green-light);color:#1a5c35}.review-wrong{background:var(--red-light);color:#7a1e1e}.review-fb{border-top:1px solid var(--border);color:var(--muted);margin-top:8px;padding-top:8px;font-size:12px;line-height:1.55}.result-banner{background:var(--navy);color:#fff;text-align:center;border-radius:8px;margin-bottom:20px;padding:28px 24px}.result-score{color:#fff;font-family:var(--mono);font-size:46px;font-weight:800;line-height:1.2}.result-pct{color:var(--mint);margin-top:4px}.result-msg{color:#cadcfc;margin-top:12px;font-size:14px}.result-actions{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:20px;display:flex}.btn-primary,.btn-secondary{cursor:pointer;border-radius:8px;padding:10px 20px;font-weight:800}.btn-primary{border:1px solid var(--mint);background:var(--mint);color:var(--navy)}.btn-secondary{color:#cadcfc;background:0 0;border:1px solid #ffffff40}.btn-secondary:disabled{cursor:not-allowed;opacity:.55}@media (width<=680px){.scoreboard{grid-template-columns:repeat(2,minmax(0,1fr))}.controls{flex-direction:column;align-items:flex-start}.spacer{display:none}.timer-wrap{justify-content:space-between;width:100%}}@media (width<=520px){.q-card{padding:17px}.stat-n{font-size:22px}.result-score{font-size:36px}}