Update offsetY calculation for chart alignment

Adjusted vertical offset for chart positioning.

Author: fabiofederici

src/components/ecosystem-grid/EcosystemGrid.tsx

@@ -150,7 +150,7 @@ export function EcosystemGrid({ data }: EcosystemGridProps) {
 
     // Center the chart
     const offsetX = Math.floor((EXPORT_WIDTH - chartWidth) / 2)
-    const offsetY = HEADER_HEIGHT + PADDING + Math.floor((availableHeight - chartHeight) / 2) + 40
+    const offsetY = HEADER_HEIGHT + PADDING + Math.floor((availableHeight - chartHeight) / 2) + 60
 
     // Create canvas - fixed 16:9
     const canvas = document.createElement('canvas')