.fraction-selector{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:.65rem;padding:1rem;background:#f7f9f9;border:1px solid var(--line);border-radius:14px}
.fraction-selector .form-check{margin:0;padding:.65rem .75rem .65rem 2.15rem;background:#fff;border:1px solid var(--line);border-radius:10px}
.preview-table{max-height:560px}
.preview-table thead{position:sticky;top:0;background:#fff;z-index:1}