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/* Model reuse integration: real 3D train + elevator anatomy */
.model-frame{position:absolute;inset:0;border:0;width:100%;height:100%;display:block;background:#f9f7f3;z-index:1}
.model-switch{position:absolute;top:18px;left:16px;display:flex;flex-wrap:wrap;gap:5px;z-index:10;max-width:calc(100% - 32px)}
.model-tab{border:1px solid #b6cabe;background:#ffffffeb;color:#46645a;box-shadow:0 3px 12px #182e3010;border-radius:7px;font-size:11px;font-weight:800;padding:9px 11px;min-height:36px}
.model-tab.active{background:#1d4e47;border-color:#1d4e47;color:#fff}
.model-tab:hover{border-color:#308f7c}
.model-description{position:absolute;bottom:55px;left:16px;right:16px;z-index:5;text-align:center;font-size:10px;font-weight:700;color:#334e4a;background:#f9fbf6de;border:1px solid #e0e7df;padding:8px;pointer-events:none}
#hint{z-index:5}
.viewport{background:#f8f6f2}
@media(max-width:650px){
 .viewport{height:440px}
 .model-switch{top:11px;left:10px}
 .model-tab{font-size:10px;padding:7px 9px;min-height:32px}
 .model-description{font-size:9px;bottom:48px;left:7px;right:7px}
 #hint{max-width:90%;white-space:normal!important}
}