/* ---------- grammar ---------- */
.grammar-sentence{
  font-size:1.35rem;font-weight:700;text-align:center;margin:16px 0;
  letter-spacing:.02em;
}
.grammar-opt{
  min-width:72px;padding:12px 18px;font-size:1.15rem;
}
.grammar-choice{
  padding:14px 16px;font-size:1.1rem;font-weight:700;text-align:left;
  background:#fff;border:2px solid var(--teal);border-radius:14px;cursor:pointer;
  box-shadow:var(--shadow);color:#20444c;
}
.grammar-choice:hover{background:#eaf6fb}
.grammar-choice:disabled{cursor:default;opacity:.85}