.quiz-ai-root{--qa-bg:#fff;--qa-primary:#2b6cff;--qa-text:#111;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;background:var(--qa-bg);color:var(--qa-text);display:flex;justify-content:center;padding:20px}
.quiz-ai-card{width:min(760px,100%);background:#fff;border-radius:18px;box-shadow:0 10px 25px rgba(0,0,0,.08);padding:22px}
.quiz-ai-header h1{margin:0 0 6px 0}
#quiz-ai-dynamic{opacity:.8;font-size:.95rem;margin-bottom:10px}
.qa-btn{display:block;width:100%;padding:12px 16px;margin:8px 0;background:var(--qa-primary);color:#fff;border:none;border-radius:12px;font-weight:600;cursor:pointer;transition:transform .05s ease}
.qa-btn:active{transform:scale(.98)}
.qa-input{width:100%;padding:12px 14px;border:1px solid #d9d9e3;border-radius:12px;margin:6px 0}
.qa-check{display:flex;align-items:center;gap:8px;margin:8px 0}
.qa-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.qa-card{border:1px solid #e9e9ef;border-radius:14px;overflow:hidden;cursor:pointer;transition:transform .1s ease, box-shadow .2s ease}
.qa-card:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(0,0,0,.08)}
.qa-card img{width:100%;display:block;height:220px;object-fit:cover}
.qa-caption{padding:8px 10px;font-weight:600;text-align:center}
.qa-single img, .qa-single video{width:100%;border-radius:14px;margin-bottom:10px}
.qa-row{display:flex;gap:12px;justify-content:center}
.qa-chest{width:30%;max-width:160px;border:2px solid transparent;border-radius:16px;padding:8px;transition:transform .1s ease, border-color .2s ease}
.qa-chest img{width:100%;display:block}
.qa-chest.win{border-color:#22c55e; transform: scale(1.05)}
.quiz-ai-footer{margin-top:18px;text-align:center;font-size:.9rem}
@media (max-width:640px){.qa-grid-2{grid-template-columns:1fr}.qa-row{gap:8px}.qa-chest{width:31%}}