.ots-quiz{max-width:850px;margin:30px auto;font-family:Arial,sans-serif;color:#1f2937}
.ots-header{margin-bottom:25px}.ots-header h2{margin:0 0 8px}.ots-breadcrumb{color:#6b7280}
.ots-step h3{font-size:24px;margin:15px 0 20px}.ots-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:15px}
.ots-quiz .ots-card,.ots-quiz button.ots-card,.ots-quiz .ots-category,.ots-quiz .ots-test{background:#fff8dc;color:#1f2937;border:1px solid #f1df9a;border-radius:10px;padding:18px;cursor:pointer;font-size:17px;transition:.15s;text-align:left;box-shadow:none;text-decoration:none}
.ots-quiz .ots-card:hover,.ots-quiz button.ots-card:hover{transform:translateY(-2px);box-shadow:0 5px 18px rgba(0,0,0,.08);background:#fff4c9;color:#111827}
.ots-quiz .ots-card-title{display:block;color:inherit;font-weight:700;line-height:1.4;text-shadow:none}
.ots-quiz .ots-card-subtitle{display:block;margin-top:7px;color:#6b7280;font-size:13px;font-weight:400;text-shadow:none}
.ots-quiz .ots-back{border:0;background:transparent;padding:8px 0;cursor:pointer;color:#5b21b6;font-size:15px}
.ots-quiz-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}
.ots-question-box{border:1px solid #e5e7eb;border-radius:14px;padding:25px;background:#fff;box-shadow:0 5px 20px rgba(0,0,0,.05)}
.ots-question-number{font-size:14px;color:#6b7280;margin-bottom:10px}.ots-question{font-size:21px;font-weight:600;line-height:1.5;margin-bottom:22px}
.ots-options{display:grid;gap:12px}.ots-option{display:flex;align-items:center;gap:12px;text-align:left;width:100%;padding:14px;border:1px solid #f1df9a;background:#fff8dc;color:#374151;border-radius:9px;cursor:pointer;font-size:16px}
.ots-option:hover:not(:disabled){background:#fff4c9;color:#374151}.ots-option:disabled{cursor:default}
.ots-option.correct{border-color:#b8e5c7;background:#e9f8ee;color:#166534}.ots-option.wrong{border-color:#f2bcbc;background:#fdecec;color:#991b1b}.ots-option.unselected{background:#fff;border-color:#f1df9a;color:#374151}
.ots-option-letter{font-weight:700;min-width:28px;height:28px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:#fff4c9;color:#374151}
.ots-option.correct .ots-option-letter{background:#d9f2e2;color:#166534}.ots-option.wrong .ots-option-letter{background:#f8d7da;color:#991b1b}
.ots-feedback{margin-top:18px;padding:14px;border-radius:9px;line-height:1.6;display:none}.ots-feedback.correct,.ots-feedback.wrong{display:block}
.ots-feedback.correct{background:#e9f8ee;color:#166534}.ots-feedback.wrong{background:#fdecec;color:#991b1b}
.ots-explanation{margin-top:8px;color:#374151}.ots-next{margin-top:18px;border:0;border-radius:8px;padding:12px 18px;background:#5b21b6;color:#fff;cursor:pointer;font-size:16px}
.ots-result{text-align:center;border:1px solid #e5e7eb;border-radius:14px;padding:35px;background:#fff}.ots-score{font-size:48px;font-weight:700;margin:20px 0}
.ots-empty{border:1px dashed #d1d5db;border-radius:10px;padding:20px;background:#f9fafb;color:#374151}.ots-empty strong{display:block;font-size:18px;margin-bottom:6px}.ots-empty span{display:block;color:#6b7280;font-size:14px}
@media(max-width:600px){.ots-quiz{margin:15px auto}.ots-question-box{padding:18px}.ots-question{font-size:18px}}