.dash-select-cell  input[type=radio] {
    appearance: none;
    width: 13px;
    height: 13px;
    border: 1px solid grey;
    border-radius: 50%;
    outline: none;
    cursor: pointer;
    position: relative;
}

.dash-select-cell  input[type=radio]:checked {
    border: 1px solid var(--bs-secondary); /* Keep border color */
}
.dash-select-cell  input[type=radio]:checked:before {
    content: '';
    position: absolute;
    top: 2px; /* Center the inner circle */
    left: 2px; /* Center the inner circle */
    width: 9px; /* Inner circle size */
    height: 9px; /* Inner circle size */
    background-color: var(--bs-secondary); /* Inner circle color */
    border-radius: 50%; /* Make it a circle */
}