/* Retained photo replacements and floating navigation only. */
#home .motion-art{position:relative;aspect-ratio:4/5;background:transparent;border-radius:0;box-shadow:none;overflow:hidden;}
.reference-sculpture {position:absolute;inset:0;width:100%;height:100%;overflow:visible;}
.reference-sculpture .disc {animation:disc-stack 9s cubic-bezier(.4,0,.2,1) infinite;animation-delay:calc(var(--layer)*.32s);animation-play-state:paused;transform:translateY(calc(175px - var(--layer)*75px));opacity:calc(.45 + var(--layer)*.18);}
.reference-sculpture .cube-wrap {animation:cube-breathe 9s cubic-bezier(.4,0,.2,1) infinite;animation-delay:calc(var(--layer)*-.5s);animation-play-state:paused;transform-origin:250px 310px;}
.motion-art.is-visible .reference-sculpture :is(.disc,.cube-wrap) {animation-play-state:running;}
@keyframes disc-stack {0%,12%,100%{transform:translateY(135px);opacity:calc(.14 + var(--layer)*.18)}38%,76%{transform:translateY(calc(175px - var(--layer)*75px));opacity:calc(.45 + var(--layer)*.18)}}
@keyframes cube-breathe {0%,15%,85%,100%{transform:translateY(0)}45%,60%{transform:translateY(calc(var(--layer)*-18px))}}

@media(prefers-reduced-motion:reduce){.reference-sculpture :is(.disc,.cube-wrap){animation:none!important;}}
#mainNav .nav-feature-menu:focus-within .feature-menu{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0);}
#home .motion-art::before,#home .motion-art::after{display:none;}
#home .motion-art{width:100%;}
/* Real 3D glass stays inside the original image footprint. */
#home .motion-art .glass-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;opacity:0;transition:opacity .6s ease;}
#home .motion-art.glass-ready .glass-canvas{opacity:1;}
#home .motion-art.glass-ready .reference-sculpture{visibility:hidden;}
@media(prefers-reduced-motion:reduce){#home .motion-art .glass-canvas{transition:none;}}
#home .motion-art.glass-ready .reference-sculpture :is(.disc,.cube-wrap){animation:none;}

/* Keep the restored header close control above the mobile menu. */
body #mainNav{z-index:1100;}