/* Isolated background trial; original artwork remains available for rollback. */
.home .has-membrane .hero-light{visibility:hidden}
.hero-membrane{position:absolute;inset:0;width:100%;height:100%;z-index:-2;pointer-events:none;opacity:1;transition:opacity 1.2s ease}
.intro-pending .hero-membrane{opacity:0;transition:none}
@media(prefers-reduced-motion:reduce){.hero-membrane{transition:none}}
@media print{.hero-membrane{display:none}}