*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;overflow:hidden;font-family:Inter,system-ui,sans-serif;background:#000}
#map-viewer{position:fixed;inset:0;width:100%;height:100%;background:#000}
.demo-notice{position:absolute;left:16px;top:52px;z-index:800;max-width:min(400px,calc(100% - 32px));padding:12px 16px;border-radius:10px;background:#f8fafced;color:#334155;font-size:13px;box-shadow:0 4px 24px #0003}
.demo-notice[hidden]{display:none}