:root { --bs-primary: #0d6efd; }
body { font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background:#f6f8fb; }
.hover-lift { transition: transform .15s ease, box-shadow .15s ease; }
.hover-lift:hover { transform: translateY(-3px); box-shadow: 0 .5rem 1rem rgba(0,0,0,.12)!important; }
.news-content { line-height: 1.8; font-size: 1.05rem; }
.quiz-card { border-left: 4px solid var(--bs-primary); }
.opt-btn { text-align:left; white-space:normal; }
.opt-btn.correct { background:#d1e7dd!important; border-color:#198754!important; }
.opt-btn.wrong { background:#f8d7da!important; border-color:#dc3545!important; }
.q-critical-badge { background:#dc3545; }
.exam-nav-cell { width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border-radius:6px;margin:2px;cursor:pointer;border:1px solid #ccc; }
.exam-nav-cell.answered { background:#0d6efd;color:#fff;border-color:#0d6efd; }
#exam-timer.warning { animation: blink 1s steps(2,start) infinite; }
@keyframes blink { to { visibility: hidden; } }