:root{--brand:#607d96;--brand-active:#4a637b;--brand-soft:#eaf0f5;--purple:var(--brand);--purple-dark:var(--brand-active);--purple-soft:var(--brand-soft);--orange:#ed854a;--ink:#233342;--muted:#566c7f;--line:#dce4eb;--line-strong:#a4b5c4;--surface:#fff;--background:#f5f7fa;--radius:9px}*{box-sizing:border-box}html,body{background:var(--background);min-height:100%;margin:0}body{color:var(--ink);-webkit-font-smoothing:antialiased;font-family:Inter,Segoe UI,Arial,sans-serif;font-size:13px;line-height:1.45}button,input,select{font:inherit}button{cursor:pointer;-webkit-tap-highlight-color:transparent}button,a,input,select{outline-offset:4px}button:focus-visible,a:focus-visible{outline:2px solid var(--purple)}button{color:inherit}button:disabled{cursor:not-allowed;opacity:.32}input,select{width:100%;min-width:0;color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:6px;padding:9px 11px;transition:border-color .15s,box-shadow 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15px;font-size:11px;font-weight:600;line-height:16px;display:inline-flex}.button.primary{background:var(--brand-active);color:#fff;border-color:var(--brand-active);box-shadow:0 3px 6px #23334212}.button.primary:hover{background:#3d5369;border-color:#3d5369}.button.secondary{border-color:var(--line);color:var(--brand-active);background:#fff}.button.secondary:hover{border-color:var(--line-strong);background:var(--background)}.button.small{gap:6px;padding:8px 10px;font-size:10px}.workspace{border:1px solid var(--line);background:#fff;border-radius:10px;grid-template-columns:62px minmax(0,1fr) 298px;height:calc(100dvh - 245px);min-height:650px;max-height:1100px;margin:0 28px;display:grid;overflow:hidden;box-shadow:0 4px 22px #23334204}.workspace.inspector-hidden{grid-template-columns:62px minmax(0,1fr)}.tool-rail{border-right:1px solid var(--line);background:#fff;flex-direction:column;align-items:center;gap:9px;padding:13px 0;display:flex}.rail-group{border-bottom:1px solid var(--line);flex-direction:column;align-items:center;gap:5px;width:42px;padding-bottom:12px;display:flex}.rail-group:last-of-type{border-bottom:0}.rail-bottom{margin-top:auto;padding-bottom:5px}.icon-button{width:32px;height:32px;color:var(--muted);background:0 0;border:0;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.icon-button:hover:not(:disabled){background:var(--background);color:var(--purple)}.icon-button.active{background:var(--purple-soft);color:var(--purple)}.tool-rail .icon-button{width:38px;height:38px}.tool-rail .icon-button.active{background:var(--purple);color:#fff;box-shadow:0 3px 7px #23334222}.danger-icon:hover:not(:disabled){color:#d06d46;background:#fff0eb}.work-area{flex-direction:column;min-width:0;min-height:0;display:flex;overflow:hidden}.canvas-toolbar{border-bottom:1px solid var(--line);flex-shrink:0;justify-content:space-between;align-items:center;gap:10px;height:52px;padding:0 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