.choice.selected{border-color:var(--blue);background:#f1f4ff;box-shadow:0 0 0 2px #315bd81a}
.choice.selected .choice-letter{background:var(--blue);border-color:var(--blue);color:#fff}
.check:disabled{opacity:.45;cursor:not-allowed}
.study-controls{display:grid;grid-template-columns:auto minmax(220px,1fr) auto auto;align-items:center;gap:10px;margin:14px 0 24px;padding:12px;background:#fffdf8;border:1px solid var(--line);border-radius:12px}
.study-controls label{font-size:10px;font-weight:800;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}
.study-controls select{height:40px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink);padding:0 11px;font:13px Manrope,sans-serif;outline:0}
.study-controls select:focus{border-color:var(--blue);box-shadow:0 0 0 2px #315bd81a}
.study-controls button{height:40px;border:1px solid var(--line);border-radius:9px;background:#f7f1e6;color:var(--ink);padding:0 13px;font:700 12px Manrope,sans-serif;cursor:pointer}
.study-controls button:hover:not(:disabled){border-color:#9aa9db;background:#f1f4ff;color:var(--blue)}
.study-controls button:disabled{opacity:.45;cursor:not-allowed}
@media(max-width:720px){.study-controls{grid-template-columns:1fr}.study-controls button,.study-controls select{width:100%}}