:root {
  --kai-sat: env(safe-area-inset-top, 0px);
  --kai-sab: env(safe-area-inset-bottom, 0px);
}
html, body { background: #08090B; }
html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}