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button{text-align:start}.parts-title{color:var(--muted);margin:.8rem 0 0;font-size:.8rem;font-weight:400}.parts{flex-direction:column;gap:.25rem;display:flex}.parts button{text-overflow:ellipsis;white-space:nowrap;padding:.2rem .5rem;font-size:.8rem;overflow:hidden}.parts button[aria-current]{border-color:var(--handle);background:color-mix(in srgb, var(--handle) 18%, var(--surface))}.parts button.is-overflow{border-color:var(--accent)}.parts button.is-overlap{border-color:#d97706}.stage-wrap{grid-area:stage;padding:1.5rem;overflow:auto}.stage-box{margin:0 auto}.stage{width:max-content;position:relative;box-shadow:0 4px 24px #00000040}.overlay{pointer-events:none;position:absolute;inset:0}.overlay>*{position:absolute}.grid-line{background:#2563eb29}.frame{pointer-events:none;border:2px solid #0000}.frame.is-selected{border-color:var(--handle)}.frame.is-overlap{border:2px dashed #d97706}.frame.is-overflow{border:2px dashed var(--accent)}.handle{cursor:nwse-resize;pointer-events:auto;touch-action:none}.handle:after{content:"";background:var(--handle);border:2px solid #fff;border-radius:3px;position:absolute;inset:25%}.stage .sb-page>[data-id]{cursor:move}.stage .sb-page>[data-selected]{touch-action:none}.empty-hint{color:#00000073;place-items:center;margin:0;font-size:1.1rem;display:grid;position:absolute;inset:0}.menu{position:relative}.menu summary{border:1px solid var(--line);background:var(--surface);cursor:pointer;border-radius:6px;padding:.25rem .7rem;list-style:none}.menu summary::-webkit-details-marker{display:none}.menu-list{z-index:10;border:1px solid var(--line);background:var(--surface);border-radius:8px;flex-direction:column;gap:.3rem;min-width:17rem;padding:.5rem;display:flex;position:absolute;top:calc(100% + 4px);left:0;box-shadow:0 6px 20px #0000004d}.menu-list button{text-align:start}.menu-list hr{border:0;border-top:1px solid var(--line);width:100%;margin:.2rem 0}.hint{color:var(--muted);margin:0 0 .8rem;font-size:.78rem}.toast{background:var(--text);max-width:min(32rem,90vw);color:var(--bg);border-radius:8px;padding:.5rem .9rem;font-size:.85rem;position:fixed;bottom:2.6rem;left:50%;transform:translate(-50%)}.panel{background:var(--surface);border-left:1px solid var(--line);grid-area:panel;padding:.9rem;overflow:auto}.panel h2{margin:0 0 .8rem;font-size:1rem}.field{flex-direction:column;gap:.2rem;margin-bottom:.7rem;display:flex}.field>span{color:var(--muted);font-size:.8rem}.field input[type=text],.field input[type=number],.field textarea,.field select{border:1px solid var(--line);background:var(--bg);border-radius:6px;width:100%;padding:.3rem .5rem}.field input[type=checkbox]{align-self:flex-start}.position{grid-template-columns:1fr 1fr;gap:0 .6rem;display:grid}.status{background:var(--surface);border-top:1px solid var(--line);color:var(--muted);grid-area:status;padding:.3rem .9rem;font-size:.8rem}.status.warn{color:var(--accent)}@media (max-width:800px){.bar,.tools{flex-wrap:nowrap;overflow-x:auto}.bar>*,.tools>*{flex-shrink:0}.parts{flex-direction:row;overflow-x:auto}.parts button{flex-shrink:0;max-width:12rem}.group-end{margin-inline-start:0}#app{grid-template:"bar""tools""stage"1fr"panel""status"/1fr;height:auto;min-height:100vh}.tools-col{border-right:0;border-bottom:1px solid var(--line)}.tools{flex-direction:row}.panel{border-left:0;border-top:1px solid var(--line)}}