.slide-stage { position:relative; background:#102a43; min-height:200px; display:flex; align-items:center; justify-content:center; overflow:hidden; }
.slide-stage img { display:block; max-width:100%; max-height:75vh; object-fit:contain; user-select:none; }
.slide-stage:fullscreen { width:100vw; height:100vh; }
.slide-stage:fullscreen img { max-height:100vh; }
#slide-watermark { position:absolute; right:12px; bottom:12px; padding:6px 10px; background:rgba(255,255,255,.8); color:#183b56; font-size:12px; pointer-events:none; }
.slide-controls { display:flex; justify-content:center; align-items:center; gap:16px; flex-wrap:wrap; margin-top:16px; }
@media print { #slide-viewer { display:none !important; } }