.preset-list{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.preset-btn{padding:6px 14px;background:#f0f0f0;border:1px solid #ddd;border-radius:3px;font-size:12px;cursor:pointer;transition:all .2s}
.preset-btn:hover{background:#3592e2;color:#fff;border-color:#3592e2}
.preview-area{text-align:center;margin:15px 0;background:#f5f5f5;padding:15px;border-radius:3px}
#previewCanvas{max-width:100%;height:auto;border:1px solid #ddd;background:#fff}
.table-scroll{overflow-x:auto}