:root{--bg:#f4f5f7;--panel:#fff;--border:#e3e6ea;--text:#1f2430;--muted:#8a93a2;--primary:#3b82f6;--primary-d:#2563eb;--danger:#ef4444;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Noto Sans JP,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg)}.btn{font:inherit;border:1px solid var(--border);cursor:pointer;color:var(--text);background:#fff;border-radius:8px;padding:7px 12px;font-size:13px;transition:background .12s,border-color .12s}.btn:hover:not(:disabled){background:#f0f2f5}.btn:disabled{opacity:.4;cursor:not-allowed}.btn.active{border-color:var(--primary);color:var(--primary-d);background:#eef4ff}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-d)}.btn-danger{color:var(--danger);border-color:#f3c4c4}.btn-danger:hover:not(:disabled){background:#fdecec}.btn-ghost{background:0 0}.btn.block{width:100%}.start-screen{place-items:center;min-height:100%;padding:40px 20px;display:grid}.import{background:var(--panel);border:1px solid var(--border);border-radius:16px;width:100%;max-width:560px;padding:36px;box-shadow:0 8px 30px #141e320f}.import-title{margin:0 0 6px;font-size:24px}.import-lead{color:var(--muted);margin:0 0 22px;font-size:14px}.restore{border-color:var(--primary);width:100%;color:var(--primary-d);margin-bottom:18px}.tabs{gap:6px;margin-bottom:16px;display:flex}.tab{font:inherit;border:1px solid var(--border);cursor:pointer;color:var(--muted);background:#fff;border-radius:8px;flex:1;padding:9px;font-size:13px}.tab.active{border-color:var(--primary);color:var(--primary-d);background:#eef4ff;font-weight:600}.dropzone{border:2px dashed var(--border);text-align:center;cursor:pointer;border-radius:12px;padding:48px 20px;transition:border-color .12s,background .12s}.dropzone.over{border-color:var(--primary);background:#f5f9ff}.dropzone p{margin:4px 0}.muted{color:var(--muted);font-size:13px}.code-import{flex-direction:column;gap:12px;display:flex}.code-area{border:1px solid var(--border);resize:vertical;border-radius:10px;width:100%;height:200px;padding:12px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px}.app{flex-direction:column;height:100%;display:flex}.toolbar{background:var(--panel);border-bottom:1px solid var(--border);flex:none;justify-content:space-between;align-items:center;height:56px;padding:0 16px;display:flex}.toolbar-left{align-items:baseline;gap:12px;display:flex}.brand{font-size:15px}.filename{color:var(--muted);font-size:12px}.toolbar-right{gap:8px;display:flex}.workspace{flex:1;min-height:0;display:flex}.canvas-wrap{flex:1;justify-content:center;padding:20px;display:flex;overflow:auto}.canvas-frame{border:1px solid var(--border);background:#fff;border-radius:10px;width:100%;max-width:1200px;height:100%;min-height:600px;box-shadow:0 4px 20px #141e320f}.sidebar{background:var(--panel);border-left:1px solid var(--border);flex:none;width:300px;overflow-y:auto}.panel{flex-direction:column;gap:18px;padding:18px;display:flex}.panel.empty{text-align:center;place-items:center;height:100%;padding:24px;display:grid}.panel-head .tag{color:var(--primary-d);background:#eef4ff;border-radius:6px;padding:4px 8px;font-family:ui-monospace,Menlo,monospace;font-size:12px}.field{flex-direction:column;gap:7px;display:flex}.field label{color:var(--text);font-size:12px;font-weight:600}.field input[type=color]{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:8px;width:100%;height:34px;padding:2px}.field input[type=range]{width:100%}.field select{font:inherit;border:1px solid var(--border);background:#fff;border-radius:8px;padding:7px;font-size:13px}.text-input{width:100%;min-height:70px;font:inherit;border:1px solid var(--border);resize:vertical;border-radius:8px;padding:8px;font-size:13px}.panel-actions{border-top:1px solid var(--border);gap:8px;padding-top:16px;display:flex}.panel-actions .btn{flex:1}