.slide-bg {
    position: absolute;
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 110%;
    z-index: 0;
    object-fit: cover; 
}
.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.4); }

.about-bg {
    position: absolute; top: -20%; left: 0;
    width: 100%; height: 140%;
    background-image: url('https://images.unsplash.com/photo-1487958449943-2429e8be8625?q=80&w=2070');
    background-size: cover; background-position: center;
    filter: brightness(0.3);
    z-index: -1;
}

.gallery-bg-parallax {
    position: absolute; top: -10%; left: 0;
    width: 100%; height: 120%;
    background-image: url('https://www.transparenttextures.com/patterns/dark-matter.png');
    background-color: #050505;
    z-index: 0;
}