html.gxcast-persistent-shell,
html.gxcast-persistent-shell body {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
    background: #0b0f19;
}
.gxcast-persistent-shell body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 1;
    background:
        radial-gradient(circle at 20% 20%, rgba(225,29,72,.22), transparent 34%),
        linear-gradient(135deg, #0b0f19, #111827);
    opacity: 1;
    transition: opacity .28s ease;
    pointer-events: none;
}
.gxcast-persistent-shell body.gxcast-frame-loaded::before {
    opacity: 0;
}
.gxcast-persistent-frame {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
    background: #0b0f19;
    opacity: 0;
    transition: opacity .28s ease;
}
.gxcast-persistent-frame.is-loaded {
    opacity: 1;
}