.ownership-estimator { border: 1px solid #ccc; padding: 15px; max-width: 500px; background: #f9f9f9; }
.ownership-estimator input { margin-bottom: 10px; width: 100%; padding: 5px; }
.ownership-estimator button { padding: 8px 15px; background: #0073aa; color: #fff; border: none; cursor: pointer; }
.ownership-estimator button:hover { background: #005177; }
#ownership_result { margin-top: 15px; background: #eaf7ea; padding: 10px; border-left: 5px solid #46b450; }