/* Galvanized architectural edges, quieter rooms and collection-first inspection. */
.museum-stage{border-radius:2px;border-color:#726449;box-shadow:0 22px 65px #0008,inset 0 0 0 1px #d6b45c12}
.scene-viewport{background:radial-gradient(ellipse at 50% 40%,#3a3330 0,#17191d 62%,#0b0d11 100%)}
.back-wall{background:linear-gradient(90deg,#1b1d23,#3a3535 45%,#393234 55%,#1b1d23);box-shadow:inset 0 0 140px #0009}
.column{background:linear-gradient(90deg,#18191d,#5c5b58 28%,#97928a 42%,#4b4946 62%,#25262a);border:1px solid #a69670}
.gallery-beam{position:absolute;left:-585px;top:-335px;width:1170px;height:38px;transform-style:preserve-3d;background:linear-gradient(#b1a38b,#605f5c 14%,#292b31 50%,#79756d 86%,#d2b97e);box-shadow:0 12px 12px #0008;border:1px solid #938778;pointer-events:none}
.beam-front{transform:translateZ(-220px)}.beam-rear{transform:translateZ(-810px)}
.scene-grain{display:none}.vignette{background:linear-gradient(0deg,#080a0dcc,transparent 14%,transparent 88%,#080a0d55),linear-gradient(90deg,#080a0d66,transparent 14%,transparent 86%,#080a0d66)}
.architectural-heading{top:35px;left:17%;right:17%;letter-spacing:3px}.architectural-heading strong{font-size:39px}
.scene-canvas{position:absolute;left:var(--frame-x);top:-137px;width:225px;height:342px;padding:0;border:0;transform:translateZ(var(--frame-z));transform-style:preserve-3d;overflow:visible;color:#decdaa;isolation:isolate}
.scene-canvas-edge{position:absolute;inset:0;transform:translate3d(10px,10px,-16px);background:#362619;border:2px solid #15120e}
.scene-canvas-face{display:block;position:absolute;inset:0;background:#161510;padding:11px;border:10px ridge #8b713e;box-shadow:0 0 0 2px #1b1710,0 18px 30px #0008,inset 0 0 0 1px #bb9f65;overflow:hidden}
.scene-canvas img{width:100%;height:100%;object-fit:cover;display:block}.canvas-grain{position:absolute;inset:12px;background:repeating-linear-gradient(0deg,#f2d29a05 0 1px,transparent 1px 3px);pointer-events:none}
.scene-canvas-label{position:absolute;top:100%;left:0;right:0;padding:18px 0;font:400 17px var(--serif);text-align:center}
.scene-canvas:hover{filter:brightness(1.1)}
.ph-scene-wall{position:absolute;left:-480px;top:-150px;width:960px;transform:translateZ(-825px);padding:0;gap:35px;perspective:1200px;overflow:visible}
.ph-scene-frame{width:260px;flex:0 0 260px;transform-style:preserve-3d}
.ph-scene-frame .ph-frame{border:8px ridge #a3854d;box-shadow:10px 8px 0 #42301b,13px 10px 0 #171611,0 16px 25px #0008}
.ph-scene-frame .ph-caption{font-size:16px;padding-top:18px;letter-spacing:2px}
.sg-mat img{aspect-ratio:2/3;object-fit:contain}
.artifact-dialog.is-collection{width:min(1240px,94vw);padding:0;background:#0e1115}
.dialog-toolbar{position:sticky;top:0;z-index:20;height:0;pointer-events:none}.dialog-toolbar .dialog-close{pointer-events:auto;min-width:44px;min-height:44px;background:#0b0d11f5}
.is-collection .artifact-layout{display:block}.is-collection .artifact-visual{display:none}.is-collection .artifact-copy{padding:50px 44px 30px}
.is-collection .artifact-copy h2{font-size:clamp(32px,4vw,50px);font-weight:400}.is-collection .artifact-summary{margin-bottom:12px}.is-collection .artifact-body{max-width:850px}.is-collection .evidence-tag{display:none}
.is-collection .artifact-body p{font-size:14px}.is-collection .source-list{margin-top:36px;padding-top:20px;border-top:1px solid #3c3428}.is-collection .source-list h3{font-size:9px;letter-spacing:2px}
.is-collection .artifact-actions{margin-top:20px;padding-top:15px}
.room-tab{backdrop-filter:none}.walk-controls,.tour-strip{backdrop-filter:none}
.discovery-links{scrollbar-width:thin}.discovery-links button{min-height:46px}
.history-rail{scrollbar-width:thin}.year-stop{min-width:150px}
@media(max-width:740px){
 .museum-stage{height:min(72svh,680px);min-height:540px}.curatorial-header p{font-size:13px}.museum-shell{padding:0 3%}
 .is-collection .artifact-copy{padding:52px 18px 25px}.artifact-dialog.is-collection{width:96vw;max-height:94svh}.is-collection .artifact-copy h2{font-size:34px}.is-collection .artifact-summary{font-size:18px}
 .column{box-shadow:none}.beam-front{transform:translateZ(-620px)}.gallery-beam{height:26px}.scene-world{transition:transform .24s ease,opacity .18s}
 .room-tab{background:#11141aeb}.passport-summary{pointer-events:none}.passport-summary button{pointer-events:auto}.room-rail nav{scrollbar-width:none}.room-rail nav::-webkit-scrollbar{display:none}
 .year-stop{min-width:135px}.curatorial-header .gold-button{border-radius:3px}.walk-controls{background:#101217}.case-halo{display:none}
 .ph-scene-wall{left:-480px;width:960px;padding:0;gap:35px}.ph-scene-frame{width:260px}.ph-scene-frame .ph-caption{font-size:16px}.sg-mat img{max-height:none;aspect-ratio:2/3;object-fit:contain}
 .header-controls button,.header-controls #help-toggle{min-height:44px}.museum-caption button{font-size:12px;white-space:normal;max-width:125px;text-align:right}.museum-caption p{font-size:13px}
}
@media(prefers-reduced-motion:reduce){.scene-world{transition:none}.scene-canvas:hover{filter:none}}