.overlay-inputs{display:flex;flex-direction:column;gap:12px;margin:16px 0}.overlay-drop{border:2px dashed #ccc;border-radius:6px;padding:16px;text-align:center}.stl-diff-stage>div:first-child{flex:3 1 70%}.stl-diff-stage>div:last-child{flex:1 1 24%;min-width:230px}.overlay-drop.dragover{background:#fff5f4;border-color:#e32c14}.overlay-drop .swatch{border-radius:50%;display:inline-block;height:12px;margin-right:6px;vertical-align:middle;width:12px}.swatch-a{background:#e32c14}.swatch-b{background:#33a532}#stl-overlay-cont{border:2px dashed transparent;border-radius:6px;bottom:0;left:0;position:absolute;right:0;top:0}#stl-overlay-cont.view-dragover{background:#fff5f4;border-color:#e32c14}#view-hint{color:#999;font-size:18px;left:50%;pointer-events:none;position:absolute;text-align:center;top:50%;transform:translate(-50%,-50%);user-select:none}#view-hint span{color:#bbb;font-size:14px}#stl-loading-overlay{background:rgba(248,248,248,0.95);border-radius:6px 6px 0 0;left:0;padding:12px 16px;position:absolute;right:0;top:0;z-index:10}#stl-loading-label{color:#666;font-size:13px;margin-bottom:4px}.stl-loading-track{background:#e0e0e0;border-radius:3px;height:6px;overflow:hidden;width:100%}#stl-loading-bar{background:#e32c14;border-radius:3px;height:100%;transition:width 0.15s;width:0}#overlay-error{color:#b00020;display:none;margin:12px 0}#controls{display:none;margin-top:2rem}.ctrl-row{align-items:center;display:flex;flex-wrap:wrap;gap:12px;margin-bottom:8px}.ctrl-row .label{white-space:nowrap;width:120px}.ctrl-align-row{border-bottom:1px solid #eee;margin-bottom:16px;padding-bottom:12px}.ctrl-align-label{font-weight:600}.diff-banner{border-radius:6px;display:none;font-size:16px;font-weight:700;margin:12px 0;padding:14px 18px}.diff-banner.diff-identical{background:#fff3cd;border:2px solid #e0a800;color:#7a5b00}.model-a{color:#e32c14;font-weight:700}.model-b{color:#278a2b;font-weight:700}.offset-row{flex-wrap:wrap}.offset-field{align-items:center;display:inline-flex;gap:6px}.offset-field input[type="number"]{width:64px}.offset-unit{color:#666}.gen-page .lead-intro{margin-top:28px;max-width:none}