[data-section="viewer"] {font-family:Arial,Helvetica,sans-serif}
.viewer-picker {display:flex;align-items:end;gap:12px;margin-bottom:12px}
.viewer-picker label {flex:1;margin:0;max-width:760px}
.viewer-picker select {width:100%;margin-top:8px}
#viewer-note {color:var(--muted,#8f9bb1);font-size:13px;min-height:18px}
.viewer-frame {display:block;width:100%;height:max(760px,calc(100vh - 265px));border:1px solid #273248;border-radius:16px;background:#0b111d}
@media(max-width:700px){.viewer-picker{align-items:stretch;flex-direction:column}.viewer-frame{height:850px}}