html, body { background-color: #020403; }
.crt-filter-defs { position: absolute; pointer-events: none; }
.crt-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-deep);
  isolation: isolate;
}
.crt-screen.curvature-ready { filter: url(#crt-curvature); }
.crt-screen::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1000;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(183, 216, 202, .035), transparent 58%),
    radial-gradient(ellipse at center, transparent 62%, rgba(0, 0, 0, .26) 100%);
}