body{font-family:system-ui,Segoe UI,Roboto,Arial,sans-serif;margin:16px}
.controls{display:flex;gap:8px;margin:8px 0}
button{cursor:pointer}
#regionInfo{font-size:.9em;color:#555}
.regionLabel{background:transparent;border:none;box-shadow:none;color:#222;font-weight:600;font-size:10px}
#map{border:1px solid #ddd;border-radius:12px}