:root{--bg:#f5f3ef;--paper:#fffdf9;--ink:#20201e;--muted:#77736c;--line:#ded9d0;--accent:#d65c3f;--accent-dark:#a63c28;--blue:#315d72}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"Microsoft JhengHei",system-ui,sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer;border:0}.topbar{height:78px;padding:14px 24px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);background:var(--paper)}h1,h2,h3,p{margin:0}.topbar h1{font-size:25px;letter-spacing:.08em}.eyebrow{font-size:10px;letter-spacing:.16em;color:var(--accent);font-weight:800}.top-actions{display:flex;gap:10px}.primary,.ghost,.danger,.text-btn{border-radius:8px;padding:10px 14px;font-weight:700}.primary{background:var(--accent);color:#fff}.primary:hover{background:var(--accent-dark)}.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}.danger{background:#f7e4df;color:#a43f2b;border:1px solid #e9b8aa}.wide{width:100%}.app-shell{height:calc(100vh - 118px);min-height:640px;display:grid;grid-template-columns:280px minmax(500px,1fr) 315px;gap:0}.sidebar,.inspector{background:var(--paper);overflow:auto}.sidebar{border-right:1px solid var(--line);padding:18px}.inspector{border-left:1px solid var(--line);padding:18px}.panel{border-top:1px solid var(--line);padding:18px 0}.panel:first-of-type{border-top:0}.panel-heading,.coord-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.panel h2,.panel-heading h2{font-size:13px}.hint,.panel-heading span{font-size:11px;color:var(--muted)}.dropzone{border:1.5px dashed #c9bfb4;border-radius:12px;padding:22px 16px;text-align:center;background:#fbf8f2}.drop-icon{font-size:31px;color:var(--accent);line-height:1}.dropzone h2{font-size:16px;margin:8px}.dropzone p,.dropzone small{font-size:12px;color:var(--muted);line-height:1.6}.dropzone small{display:block;margin-top:12px}.tool-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:5px}.tool-grid button{background:#f4f1eb;border:1px solid var(--line);border-radius:7px;padding:8px 2px;font-weight:800;font-size:13px}.tool-grid button.active{background:#f6ddd6;border-color:#da8c78;color:#9d3e2b}.tool-grid span{font-size:9px;font-weight:500}.tool-tip{font-size:10px;color:var(--muted);margin-top:10px;line-height:1.7}kbd{background:#ebe7df;border-radius:3px;padding:2px 4px}.annotation-list{display:flex;flex-direction:column;gap:6px}.annotation-item{display:flex;gap:7px;align-items:center;padding:8px;border:1px solid var(--line);border-radius:7px;background:#fff}.annotation-item.active{border-color:var(--accent);background:#fff4f0}.annotation-dot{width:9px;height:9px;border-radius:50%;background:var(--accent)}.annotation-info{flex:1;min-width:0}.annotation-info strong{display:block;font-size:12px}.annotation-info small{font-size:10px;color:var(--muted)}.empty{color:var(--muted);font-size:12px;padding:18px 0;text-align:center}.panel textarea,.inspector textarea,.inspector select,.inspector input{width:100%;border:1px solid var(--line);background:#fffefa;border-radius:6px;padding:9px;color:var(--ink)}.workspace{min-width:0;display:flex;flex-direction:column}.canvas-toolbar{height:62px;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 18px;display:flex;align-items:center;justify-content:space-between}.canvas-toolbar strong{display:block;font-size:13px}.canvas-toolbar span{font-size:11px;color:var(--muted)}.canvas-actions{display:flex;gap:6px}.canvas-actions button{padding:7px 10px;font-size:12px}.canvas-stage{position:relative;flex:1;overflow:hidden;background:#d8d4ce;display:flex;align-items:center;justify-content:center}.canvas-stage canvas{position:absolute;transform-origin:0 0;box-shadow:0 12px 32px #0002;background:#fff;touch-action:none}.stage-hint{text-align:center;color:#6e6962;pointer-events:none}.stage-hint-icon{font-size:54px;color:#aaa39a}.stage-hint h2{font-size:18px}.stage-hint p{font-size:12px;margin-top:8px}.tabs{display:flex;border-bottom:1px solid var(--line);margin:-18px -18px 18px}.tab{flex:1;padding:15px 6px;background:transparent;color:var(--muted);font-weight:700;font-size:12px;border-bottom:2px solid transparent}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.tab-content{font-size:12px}.inspector label{display:block;margin:14px 0;font-weight:700;font-size:11px}.inspector textarea{margin-top:6px;resize:vertical}.inspector select,.inspector input{margin-top:6px}.coord-head h3{font-size:12px}.text-btn{padding:0;background:transparent;color:var(--accent);font-size:11px}.coord-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.ratio-box,.output-card{background:#f7f4ee;border:1px solid var(--line);border-radius:8px;padding:12px;line-height:1.6;color:var(--muted);font-size:11px}.output-card{margin-bottom:12px;color:var(--ink)}.output-card h2{font-size:16px;margin:7px 0 12px}.output-card h3{font-size:12px;margin-bottom:7px}.output-card pre{white-space:pre-wrap;max-height:390px;overflow:auto;background:#282623;color:#f7efe4;border-radius:6px;padding:10px;font-size:10px;line-height:1.5}.output-card button{margin-top:10px}footer{height:40px;border-top:1px solid var(--line);background:var(--paper);display:flex;justify-content:space-between;align-items:center;padding:0 24px;color:var(--muted);font-size:10px}@media(max-width:1050px){.app-shell{grid-template-columns:235px minmax(420px,1fr)}.inspector{position:fixed;right:0;top:78px;bottom:40px;width:315px;transform:translateX(100%);transition:.2s;z-index:5}.inspector:hover{transform:none}}@media(max-width:760px){.app-shell{display:block;height:auto;min-height:calc(100vh - 118px)}.sidebar{border:0}.workspace{height:65vh}.inspector{position:static;width:auto;transform:none;border:0;border-top:1px solid var(--line)}.topbar{height:auto;gap:12px;align-items:flex-start}.top-actions{flex-wrap:wrap;justify-content:flex-end}.top-actions button{font-size:11px;padding:8px}.canvas-toolbar{padding:10px}.canvas-stage{min-height:420px}}