.bg-poster {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    z-index: -100;
    pointer-events: none;
}

.bg-poster.hidden {
    opacity: 0;
    transition: opacity 0.6s ease;
}

#bg-video {
    opacity: 0;
    transition: opacity 0.6s ease;
}

#bg-video.ready {
    opacity: 1;
}