/* Eltern-Wrapper (.wp-block-columns) statt einzelner .wp-block-column */
.wp-block-columns.has-bg-image { position: relative; isolation: isolate; }
.wp-block-columns.has-bg-image::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: var(--col-bg-url);
    background-size: 53%;
    background-repeat: no-repeat;
    background-position: left;
    mix-blend-mode: var(--col-bg-blend, normal);
    z-index: 0;
    pointer-events: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 50px;
}
/* Kinder bleiben über dem Overlay */
.wp-block-columns.has-bg-image > * { position: relative; z-index: 1; }