.hc-group-box {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}
.hc-group-box h4 {
    margin-top: 0;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
    padding-bottom: 5px;
}
#hc-pooled-sd .hc-result-value {
    color: #2980b9;
    font-size: 2.5rem;
    font-weight: bold;
}
@media (max-width: 480px) {
    #hc-pooled-sd .hc-result-grid {
        grid-template-columns: 1fr !important;
    }
}