:root{--bg:#f1f3f7;--panel:#fff;--line:#e2e6ee;--line2:#d4dae6;--ink:#1f2733;--muted:#788196;--accent:#3b6fd4;--accent-weak:#e8f0fe;--danger:#d6453d;--radius:8px;--shadow:0 1px 3px #141e3c14, 0 1px 2px #141e3c0f;font-family:system-ui,-apple-system,Segoe UI,Roboto,Hiragino Sans,Noto Sans JP,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--ink);font-size:13px}button{font:inherit;color:var(--ink);border:1px solid var(--line2);cursor:pointer;white-space:nowrap;background:#fff;border-radius:6px;padding:5px 10px;font-size:12px;line-height:1.1}button:hover:not(:disabled){background:#f6f8fc;border-color:#c2cbdc}button:active:not(:disabled){background:#eef2fa}button:disabled{opacity:.4;cursor:default}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.primary:hover:not(:disabled){background:#335fbb}button.danger{color:var(--danger);border-color:#e7b4b1}button.icon{padding:4px 9px;font-size:15px}input,select{font:inherit;font-size:12px}input[type=number],input[type=text]{border:1px solid var(--line2);color:var(--ink);background:#fff;border-radius:5px;width:100%;padding:4px 6px}input[type=color]{border:1px solid var(--line2);cursor:pointer;background:#fff;border-radius:5px;width:30px;height:26px;padding:0}select{border:1px solid var(--line2);background:#fff;border-radius:5px;padding:4px 6px}.app{flex-direction:column;height:100vh;display:flex}.empty{flex:1;place-items:center;padding:40px;display:grid}.topbar{background:var(--panel);border-bottom:1px solid var(--line);align-items:center;gap:14px;padding:8px 14px;display:flex}.brand{letter-spacing:-.2px;font-size:15px;font-weight:700}.brand span{color:var(--accent)}.tb-group{align-items:center;gap:6px;display:flex}.tb-group.right{margin-left:auto}.status{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;max-width:40vw;font-size:12px;overflow:hidden}.insertbar{background:var(--panel);border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:6px;padding:7px 14px;display:flex}.insertbar .sep{background:var(--line);width:1px;height:22px;margin:0 4px}.insertbar .grp{align-items:center;gap:3px;display:flex}.insertbar .grp.disabled{opacity:.4;pointer-events:none}.insertbar .lbl{color:var(--muted);margin-right:3px;font-size:11px}.menu-wrap{position:relative}.menu{z-index:50;border:1px solid var(--line2);box-shadow:var(--shadow);background:#fff;border-radius:8px;flex-direction:column;min-width:120px;padding:4px;display:flex;position:absolute;top:calc(100% + 4px);left:0}.menu button{text-align:left;background:0 0;border:none;border-radius:5px;padding:6px 10px}.menu button:hover{background:var(--accent-weak)}.body{flex:1;min-height:0;display:flex}.rail{background:var(--panel);border-right:1px solid var(--line);flex-direction:column;flex:0 0 168px;width:168px;min-height:0;display:flex}.rail-actions{border-bottom:1px solid var(--line);gap:4px;padding:8px;display:flex}.rail-actions button{flex:1}.rail-list{flex-direction:column;flex:1;gap:8px;padding:8px;display:flex;overflow-y:auto}.rail-item{border:2px solid var(--line2);cursor:pointer;background:#fff;border-radius:7px;flex:none;position:relative;overflow:hidden}.rail-item:hover{border-color:#b7c2da}.rail-item.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-weak)}.rail-item.drop{border-color:var(--accent);border-style:dashed}.rail-num{z-index:2;color:var(--muted);pointer-events:none;background:#ffffffd9;border-radius:4px;padding:0 4px;font-size:10px;position:absolute;top:3px;left:4px}.rail-svg{pointer-events:none;display:block}.rail-svg svg{width:100%;height:auto;display:block}.stage{background:var(--bg);flex:1;justify-content:center;align-items:center;min-width:0;padding:24px;display:flex;position:relative;overflow:hidden}.canvas{box-shadow:var(--shadow);background:#fff;border-radius:4px;position:relative}.canvas svg{border-radius:4px;width:100%;height:100%;display:block}.inline-hint{color:#fff;z-index:200;pointer-events:none;background:#1f2733e6;border-radius:20px;padding:5px 12px;font-size:11px;position:absolute;bottom:14px;left:50%;transform:translate(-50%)}.panel{background:var(--panel);border-left:1px solid var(--line);flex:0 0 280px;width:280px;overflow-y:auto}.panel-empty{color:var(--muted);text-align:center;padding:24px 18px;font-size:12px;line-height:1.7}.props{padding:0 0 24px}.props-title{border-bottom:1px solid var(--line);background:var(--panel);z-index:1;padding:12px 14px;font-size:12px;font-weight:600;position:sticky;top:0}.hint{color:var(--muted);padding:12px 14px;font-size:12px;line-height:1.6}.prop-section{border-bottom:1px solid var(--line)}.prop-head{background:0 0;border:none;justify-content:space-between;align-items:center;width:100%;padding:10px 14px;font-size:12px;font-weight:600;display:flex}.prop-head:hover{background:#f7f9fc}.prop-head .chev{color:var(--muted)}.prop-body{flex-direction:column;gap:8px;padding:4px 14px 14px;display:flex}.grid2{grid-template-columns:1fr 1fr;gap:6px;display:grid}.grid2 label{color:var(--muted);flex-direction:column;gap:3px;font-size:11px;display:flex}.grid2 label:nth-child(5){grid-column:span 2}.row{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.row button{flex:none}.row .angle{flex:none;width:56px}.row label{color:var(--muted);align-items:center;gap:4px;font-size:11px;display:flex}.gradient input[type=number]{width:52px}.filebtn{border:1px solid var(--line2);cursor:pointer;background:#fff;border-radius:6px;padding:5px 10px;font-size:12px}.filebtn:hover{background:#f6f8fc}.selection-overlay{pointer-events:none;border:1.5px solid var(--accent);z-index:100;position:absolute}.resize-handle{border:1.5px solid var(--accent);pointer-events:all;z-index:101;background:#fff;border-radius:2px;width:10px;height:10px;position:absolute}.resize-handle.nw{cursor:nwse-resize;top:-5px;left:-5px}.resize-handle.ne{cursor:nesw-resize;top:-5px;right:-5px}.resize-handle.sw{cursor:nesw-resize;bottom:-5px;left:-5px}.resize-handle.se{cursor:nwse-resize;bottom:-5px;right:-5px}.resize-handle.n{cursor:ns-resize;top:-5px;left:calc(50% - 5px)}.resize-handle.s{cursor:ns-resize;bottom:-5px;left:calc(50% - 5px)}.resize-handle.w{cursor:ew-resize;top:calc(50% - 5px);left:-5px}.resize-handle.e{cursor:ew-resize;top:calc(50% - 5px);right:-5px}.rotate-handle{border:1.5px solid var(--accent);pointer-events:all;cursor:grab;z-index:101;background:#fff;border-radius:50%;width:14px;height:14px;position:absolute;top:-26px;left:calc(50% - 7px)}.rotate-handle:after{content:"";background:var(--accent);width:1.5px;height:12px;position:absolute;top:14px;left:50%;transform:translate(-50%)}.multi-overlay{pointer-events:none;border:1.5px dashed var(--accent);z-index:99;background:#3b6fd40f;position:absolute}.edit-overlay{pointer-events:none;border:1.5px dashed var(--accent);z-index:100;border-radius:2px;position:absolute}.text-caret{background:var(--accent);pointer-events:none;z-index:103;width:2px;animation:1s step-end infinite caret;position:absolute}@keyframes caret{50%{opacity:0}}