:root{--bg: #F2EDE6;--bg-2: #EAE3D9;--bg-3: #C4B8A8;--surface: #FFFFFF;--text: #1C1612;--muted: #888076;--accent: #B5622A;--accent-dk: #9A5022;--border: rgba(28, 22, 18, .12);--radius: 10px;--radius-sm: 6px}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;padding:14px 24px;border-bottom:1px solid var(--border);background:var(--bg)}.topbar h1{font-size:17px;font-weight:700;letter-spacing:-.02em;margin:0}.brand-sub{display:block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin-top:2px}.toolbar{display:flex;align-items:center;gap:4px;padding:8px 24px;border-bottom:1px solid var(--border);background:var(--bg-2)}.toolbar-divider{width:1px;height:20px;background:var(--border);margin:0 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ease}.btn:hover{border-color:var(--bg-3);background:var(--bg-2)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-dk);border-color:var(--accent-dk)}.btn-block{width:100%;text-align:center}.main{flex:1;display:flex;overflow:hidden;min-height:0}.sidebar{width:300px;flex-shrink:0;background:var(--bg);border-right:1px solid var(--border);padding:16px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--bg-3) transparent}.sidebar::-webkit-scrollbar{width:8px}.sidebar::-webkit-scrollbar-thumb{background:var(--bg-3);border-radius:4px}.section{margin-bottom:12px}.section summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;padding:10px 12px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text);-webkit-user-select:none;user-select:none;border-radius:var(--radius-sm)}.section 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#fff;border-radius:50%;transform:translate(-50%,-50%);cursor:grab;touch-action:none}.rotate-handle:before{content:"";position:absolute;top:100%;left:50%;width:1px;height:16px;background:#b5622a80;transform:translate(-50%)}.line-body{position:absolute;height:16px;transform-origin:left center;cursor:move;touch-action:none}.line-body:before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:#b5622a73;transform:translateY(-50%)}.line-body:hover:before{background:var(--accent)}.line-body.selected:before{height:2px;background:var(--accent)}.line-endpoint{position:absolute;width:13px;height:13px;background:var(--accent);border:2px solid #fff;border-radius:50%;transform:translate(-50%,-50%);cursor:grab;touch-action:none}.layers-panel{width:230px;flex-shrink:0;background:var(--bg);border-left:1px solid var(--border);padding:16px;overflow-y:auto}.layers-panel-header{font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px}.layers-list{display:flex;flex-direction:column;gap:6px}.layer-row{display:flex;align-items:center;gap:8px;padding:8px 10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;font-size:13px}.layer-row:hover{border-color:var(--bg-3)}.layer-row.selected{border-color:var(--accent);background:#b5622a14}.layer-row-icon{width:15px;height:15px;flex-shrink:0;color:var(--muted)}.layer-row-icon svg{width:100%;height:100%}.layer-row-label{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.layer-row-remove{background:none;border:none;color:var(--muted);cursor:pointer;font-size:14px;line-height:1;padding:2px 4px;flex-shrink:0}.layer-row-remove:hover{color:var(--text)}.slide-strip{flex-shrink:0;border-top:1px solid var(--border);background:var(--bg);padding:12px 16px;overflow-x:auto}.slide-strip-list{display:flex;gap:10px;width:max-content}.slide-strip-thumb{width:56px;height:84px;border:2px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;cursor:pointer;position:relative;background:var(--bg-2);flex-shrink:0}.slide-strip-thumb img{width:100%;height:100%;object-fit:cover}.slide-strip-thumb.active{border-color:var(--accent)}.slide-strip-thumb .remove{position:absolute;top:2px;right:2px;background:#1c161299;color:#fff;border:none;border-radius:3px;width:16px;height:16px;font-size:10px;line-height:1;cursor:pointer}.slide-strip-add{width:56px;height:84px;border:2px dashed var(--border);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--muted);cursor:pointer;font-size:20px;flex-shrink:0}