.grade-selector{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:center;background:#fff;padding:14px 18px;border-bottom:2px solid #dce4ec;color:#203047;font:inherit}
.grade-selector button{font:inherit;cursor:pointer;padding:10px 18px;border:2px solid #64748b;border-radius:12px;color:#203047;background:#fff;min-height:44px}
.grade-selector button[aria-pressed="true"]{background:#244b83;border-color:#244b83;color:#fff;font-weight:700}
.grade-selector button:focus-visible{outline:3px solid #b44a00;outline-offset:3px}
.grade-selector small{flex-basis:100%;text-align:center}