.museum-tomb-trails{width:100%;margin:clamp(56px,8vw,112px) 0 0;border-top:1px solid rgba(80,65,50,.22);background:transparent;overflow:hidden}
.museum-tomb-trails iframe{display:block;width:100%;height:clamp(1040px,76vw,1260px);border:0;background:#1b241d}
@media(max-width:820px){.museum-tomb-trails{margin-top:clamp(44px,14vw,76px)}.museum-tomb-trails iframe{height:clamp(1080px,184vw,1420px)}}
/* 20260820 · archaeology embed width follows the host page grid. */
.museum-tomb-trails--archaeology {
  width:min(1880px,calc(100% - 32px));
  margin-inline:auto;
}
.museum-tomb-trails--archaeology iframe {
  height:clamp(1080px,78vw,1320px);
}
@media (max-width:820px) {
  .museum-tomb-trails--archaeology {
    width:calc(100% - 20px);
  }
  .museum-tomb-trails--archaeology iframe {
    height:clamp(1120px,190vw,1480px);
  }
}
.museum-tomb-trails--shangqiu{margin-top:0;border-top-color:rgba(216,173,114,.24);background:#17090d}
.museum-tomb-trails--shangqiu iframe{height:clamp(1080px,78vw,1280px);background:#17090d}
@media(max-width:820px){.museum-tomb-trails--shangqiu iframe{height:clamp(1120px,190vw,1460px)}}