/* Ouverture en deux volets : le fond OSM se charge sous le rideau noir. */
html:not(.map-intro-complete):not(.intro-curtain-ready)::before{content:"";position:fixed;inset:0;background:#000;z-index:1999}
.map-intro-running #map-culture-logo{visibility:hidden}
.culture-opening{position:fixed;inset:0;z-index:2000;overflow:hidden;pointer-events:none}
.culture-opening-panel{position:absolute;left:0;right:0;height:calc(50% + 1px);background:#000;transition:transform 1500ms cubic-bezier(.65,0,.35,1);will-change:transform}
.culture-opening-top{top:0}.culture-opening-bottom{bottom:0}
.culture-opening.opening .culture-opening-top{transform:translateY(-100%)}
.culture-opening.opening .culture-opening-bottom{transform:translateY(100%)}
.culture-opening-brand{position:absolute;left:50%;top:50%;width:min(320px,90vw);transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:20px;animation:culture-brand-appear 650ms ease both}
.culture-opening-logo{display:block;width:190px;height:190px;max-width:none;object-fit:contain;background:#000;border-radius:32px;filter:none;transform-origin:top left;transition:transform 1600ms cubic-bezier(.45,0,.55,1),filter 1600ms ease,border-radius 1600ms ease;will-change:transform}
.culture-opening-tagline{margin:0;color:#fff;font:400 clamp(16px,3vw,20px)/1.4 system-ui,sans-serif;text-align:center;letter-spacing:.025em;transition:opacity 450ms ease}
.culture-opening.opening .culture-opening-tagline{opacity:0}
@keyframes culture-brand-appear{from{opacity:0}to{opacity:1}}