:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5;color:#111827;background-color:#f9fafb}*{box-sizing:border-box}body{margin:0;background:#f1f5f9}a{color:inherit}.app-shell{min-height:100vh;display:flex;flex-direction:column}.navbar{background:#1d4ed8;color:#fff;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center}.navbar h1{margin:0;font-size:1.25rem}.nav-links{display:flex;gap:1rem;align-items:center}.nav-links a,.nav-links button{border:none;background:transparent;color:#fff;font-weight:600;cursor:pointer}main{flex:1;padding:2rem clamp(1rem,5vw,3rem)}.card{background:#fff;border-radius:12px;padding:clamp(1.5rem,4vw,2.5rem);box-shadow:0 10px 25px #0f172a14}.grid{display:grid;gap:1.5rem}.input-group{display:flex;flex-direction:column;gap:.35rem}.input-group label{font-weight:600;font-size:.95rem}.input-group input,.input-group select{border-radius:8px;border:1px solid #cbd5f5;padding:.75rem .9rem;font-size:1rem}button.primary{border:none;border-radius:8px;background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;font-weight:600;padding:.75rem 1.5rem;cursor:pointer;transition:transform .1s ease,box-shadow .1s ease}button.primary:hover{transform:translateY(-1px);box-shadow:0 8px 20px #2563eb40}button.secondary{border:none;border-radius:8px;background:#e5e7eb;color:#1f2937;font-weight:600;padding:.5rem 1rem;cursor:pointer}.alert{border-radius:8px;padding:.75rem 1rem;font-weight:500}.alert.success{background:#dcfce7;color:#166534}.alert.error{background:#fee2e2;color:#991b1b}.question-header{display:flex;flex-direction:column;gap:.25rem;margin-bottom:1rem}.question-header span{font-size:.9rem;color:#64748b}.alternatives{display:grid;gap:.75rem}.question-body{margin-bottom:1rem;color:#1f2937}.question-body.emphasis{font-weight:600}.question-body p{margin:.75rem 0}.question-body ul,.question-body ol{margin:.75rem 0 .75rem 1.5rem}.question-body table{width:100%;border-collapse:collapse;margin:1rem 0}.question-body table th,.question-body table td{border:1px solid #cbd5f5;padding:.5rem .75rem;text-align:left}.question-body blockquote{border-left:4px solid #2563eb;margin:1rem 0;padding:.5rem 1rem;background:#eff6ff;color:#1e3a8a}.alternative-text :is(p,ul,ol){margin:0}.alternative-button{border:1px solid #cbd5f5;border-radius:10px;padding:.9rem 1.1rem;text-align:left;background:#fff;font-weight:500;cursor:pointer;transition:border-color .2s ease,box-shadow .2s ease}.alternative-button:hover{border-color:#2563eb;box-shadow:0 6px 16px #2563eb1f}.alternative-button.correct{border-color:#16a34a;background:#dcfce7}.alternative-button.incorrect{border-color:#dc2626;background:#fee2e2}.attachments{margin-top:1.25rem;display:grid;gap:1rem}.attachments img,.attachments iframe{max-width:100%;border-radius:8px;box-shadow:0 6px 18px #0f172a26}.table{width:100%;border-collapse:collapse;margin-top:1rem}.table th,.table td{padding:.75rem .9rem;border-bottom:1px solid #e2e8f0;text-align:left}.table th{background:#f8fafc;font-size:.9rem;text-transform:uppercase;letter-spacing:.03em}.badge{display:inline-flex;align-items:center;gap:.35rem;border-radius:999px;padding:.25rem .75rem;font-weight:600;font-size:.85rem}.badge.success{background:#dcfce7;color:#166534}.badge.error{background:#fee2e2;color:#991b1b}.tabs{display:flex;gap:.5rem;margin-bottom:1.5rem}.tabs button{flex:1;border:none;border-radius:8px;padding:.75rem;font-weight:600;cursor:pointer;background:#e2e8f0;color:#1f2937;transition:background .2s ease,color .2s ease}.tabs button.active{background:#2563eb;color:#fff}@media (max-width: 768px){.navbar{flex-direction:column;gap:.75rem;align-items:flex-start}main{padding:1.5rem 1rem}.card{padding:1.5rem}}
