#bg-app{--bd: var(--border-strong);margin-top:.5rem}.bg-toolbar{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;padding:.5rem;border:1px solid var(--bd);border-radius:var(--radius-md);background:var(--surface);margin-bottom:.75rem}.bg-tb-group{display:flex;gap:.35rem;align-items:center}.bg-tb-right{margin-left:auto}.bg-tb-btn{display:inline-flex;align-items:center;gap:.35rem;font:inherit;font-size:.84rem;font-weight:600;color:var(--text);background:var(--bg);border:1px solid var(--bd);border-radius:var(--radius-sm);padding:.42rem .7rem;cursor:pointer;white-space:nowrap}.bg-tb-btn:hover{background:var(--surface-hover)}.bg-tb-btn:disabled{opacity:.45;cursor:not-allowed}.bg-tb-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.bg-tb-primary:hover:not(:disabled){background:var(--accent-hover)}.bg-main{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:1rem;align-items:start}.bg-stage{position:relative;display:flex;align-items:center;justify-content:center;background:repeating-conic-gradient(#1a1a1a 0% 25%,#232323 0% 50%) 50%/22px 22px;border:1px solid var(--bd);border-radius:var(--radius-md);overflow:hidden;min-height:340px;aspect-ratio:4/3}#bg-canvas{max-width:100%;max-height:64vh;object-fit:contain;display:block}.bg-badge{position:absolute;top:.5rem;left:.5rem;font-family:var(--font-mono);font-size:.7rem;color:var(--text);background:color-mix(in srgb,var(--bg) 80%,transparent);border:1px solid var(--bd);border-radius:var(--radius-pill);padding:.18rem .55rem;pointer-events:none}.bg-stage-empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;text-align:center;padding:1.5rem;background:color-mix(in srgb,var(--bg) 88%,transparent)}.bg-stage-empty.bg-hide{display:none}.bg-se-ic{color:var(--accent-text)}.bg-se-ic svg{width:44px;height:44px}.bg-se-title{font-weight:700;font-size:1.05rem}.bg-se-sub{font-size:.84rem;color:var(--text-muted);max-width:32ch}.bg-se-actions{display:flex;gap:.5rem;flex-wrap:wrap;justify-content:center;margin-top:.4rem}.bg-busy{position:absolute;inset:auto 0 0;display:flex;flex-direction:column;gap:.3rem;padding:.7rem .9rem;background:color-mix(in srgb,var(--bg) 92%,transparent);border-top:1px solid var(--bd)}.bg-busy-bar{height:7px;border-radius:4px;background:var(--surface);overflow:hidden}.bg-busy-bar i{display:block;height:100%;width:0%;background:var(--accent);transition:width .15s var(--ease)}.bg-busy span{font-size:.76rem;color:var(--text-secondary);font-family:var(--font-mono)}.bg-rail{display:flex;flex-direction:column;gap:.6rem}.bg-card{border:1px solid var(--bd);border-radius:var(--radius-md);background:var(--surface);padding:.7rem .75rem .8rem}.bg-card-h{font-weight:600;font-size:.84rem;margin-bottom:.55rem}.bg-ctl{display:flex;flex-direction:column;gap:.25rem;font-size:.76rem;color:var(--text-muted);margin-top:.5rem}.bg-ctl output{font-family:var(--font-mono);font-size:.72rem;color:var(--text)}.bg-ctl input[type=range]{width:100%}.bg-row{display:flex;align-items:center;justify-content:space-between;font-size:.78rem;color:var(--text-muted);margin-top:.5rem}.bg-row input[type=color],#bg-color{width:42px;height:26px;padding:0;border:1px solid var(--bd);border-radius:var(--radius-sm);background:none;cursor:pointer}.bg-mode-ctl{margin-top:.5rem}.bg-imgbtn{width:100%;justify-content:center}.bg-swatches{display:flex;flex-wrap:wrap;gap:5px;margin-top:.5rem}.bg-swatches button{width:22px;height:22px;border-radius:50%;border:1px solid var(--bd);cursor:pointer;padding:0}.bg-seg{display:inline-flex;border:1px solid var(--bd);border-radius:var(--radius-sm);overflow:hidden}.bg-seg-wrap{flex-wrap:wrap;display:flex}.bg-seg-sm{font-size:.78rem}.bg-seg button{flex:1;font:inherit;font-size:.76rem;font-weight:600;color:var(--text-muted);background:var(--bg);border:none;border-right:1px solid var(--bd);padding:.42rem .55rem;cursor:pointer;white-space:nowrap}.bg-seg button:last-child{border-right:none}.bg-seg button[aria-pressed=true]{background:var(--accent);color:#fff}.bg-note{font-size:.74rem;color:var(--text-muted);line-height:1.5;margin:.55rem 0 0}.bg-privacy{display:flex;gap:.5rem;align-items:flex-start}.bg-privacy svg,.bg-priv-line svg{width:17px;height:17px;flex:none;color:var(--accent-text);margin-top:1px}.bg-batch-btn{width:100%;margin-top:.6rem;justify-content:center}.bg-modal{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:1rem;background:#0000008c}.bg-modal-card{width:min(440px,100%);background:var(--surface);border:1px solid var(--bd);border-radius:var(--radius-lg);box-shadow:0 18px 60px #0006;display:flex;flex-direction:column;max-height:92vh}.bg-modal-head{display:flex;justify-content:space-between;align-items:center;padding:.85rem 1rem;border-bottom:1px solid var(--bd)}.bg-modal-head h3{margin:0;font-size:1.02rem}.bg-modal-x{background:none;border:none;font-size:1rem;color:var(--text-muted);cursor:pointer}.bg-modal-body{padding:1rem;overflow-y:auto;display:flex;flex-direction:column;gap:.4rem}.bg-priv-line{display:flex;gap:.45rem;align-items:flex-start;font-size:.76rem;color:var(--text-muted);margin:.2rem 0 0}.bg-export-progress{display:flex;flex-direction:column;gap:.35rem;margin-top:.5rem}.bg-export-progress span{font-family:var(--font-mono);font-size:.74rem;color:var(--text-muted)}.bg-result{display:flex;flex-direction:column;gap:.5rem;align-items:center;text-align:center;margin-top:.5rem}.bg-result img{max-width:100%;max-height:180px;border-radius:var(--radius-sm);border:1px solid var(--bd);background:repeating-conic-gradient(#1a1a1a 0 25%,#232323 0 50%) 50%/16px 16px}.bg-result-ok{color:var(--accent-text);font-weight:600;font-size:.82rem}.bg-result-meta{font-family:var(--font-mono);font-size:.78rem;color:var(--text)}.bg-modal-foot{display:flex;justify-content:flex-end;gap:.5rem;padding:.85rem 1rem;border-top:1px solid var(--bd)}@media(max-width:820px){.bg-main{grid-template-columns:1fr}.bg-rail{order:3}#bg-canvas{max-height:50vh}}