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/* Lisibilité sur les photographies claires, sans masquer la matière. */
.veil{background:linear-gradient(90deg,rgba(7,14,10,.30),rgba(7,14,10,.04) 62%),linear-gradient(180deg,rgba(7,14,10,.60),rgba(7,14,10,.04) 30%,rgba(7,14,10,.20) 45%,rgba(7,14,10,.82))}.scene-description{text-shadow:0 1px 8px #0005}@media(max-width:760px){.veil{background:linear-gradient(180deg,rgba(7,14,10,.60),rgba(7,14,10,.05) 26%,rgba(7,14,10,.40) 46%,rgba(7,14,10,.93))}.tour-footer{bottom:max(22px,env(safe-area-inset-bottom))}}

/* Visite pilotée par le défilement natif — v2 */
body.scroll-tour{overflow-x:hidden;overflow-y:auto;overscroll-behavior-y:none}
body.scroll-tour main{position:fixed;inset:0;height:100dvh;min-height:0}
#scroll-track{display:none}body.scroll-tour #scroll-track{display:block;pointer-events:none}
#scroll-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:0;pointer-events:none}
#scroll-canvas.ready{opacity:1}
#scroll-instruction{position:absolute;top:110px;left:4.4%;right:4.4%;pointer-events:none;font-size:10px;letter-spacing:.08em;color:var(--paper)}
.scroll-line{height:1px;background:rgba(255,255,255,.22);margin-top:10px;overflow:hidden}
#scroll-meter{display:block;width:100%;height:100%;background:var(--gold);transform:scaleX(0);transform-origin:left}
.progress-rail a[aria-current]{background:linear-gradient(90deg,var(--gold) calc(var(--part)*100%),rgba(255,255,255,.4) 0)}
html:has(dialog[open]){overflow:hidden}
@media(max-width:700px){#scroll-instruction{top:90px;font-size:9px;left:6%;right:6%}}
@media(prefers-reduced-motion:reduce){#scroll-canvas{display:none}}

/* Raccords contrôlés : préserver le caractère des pièces, sans faux passage. */
#raccord-veil{position:absolute;inset:0;background:#171913;opacity:0;pointer-events:none}
#chapter-label{display:block;margin-bottom:9px;font-size:10px;letter-spacing:.14em;color:var(--gold);text-transform:uppercase}
#scroll-status{font-size:9px;opacity:.85}
@media(max-width:700px){#chapter-label{font-size:9px;margin-bottom:7px}#scroll-instruction{top:90px}}