* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
  height: 100%;
  background: #0a0a18;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  font-family: -apple-system, "PingFang SC", system-ui, sans-serif;
}
#cv { display: block; width: 100vw; height: 100vh; touch-action: none; }