Analyze this dashboard image and extract its visual design system.
Return ONLY valid JSON with this exact shape:

{
  "primary": "#2D5BFF",
  "secondary": "#1A3A8F",
  "accent": "#FF6B35",
  "background": "#FFFFFF",
  "text": "#252423",
  "data_colors": ["#2D5BFF", "#FF6B35", "#28C76F", "#EA5455", "#FF9F43", "#1E9AF5", "#9B59B6", "#2ECC71"],
  "style_notes": "dark navy header, minimal gridlines, rounded cards, sans-serif font",
  "chart_style": "flat",
  "border_radius": "soft"
}

data_colors: 8 hex values representing the chart series palette visible in the image.
Extract the ACTUAL colors from the image — do not invent colors not present.
style_notes: include layout signals such as KPI rail, KPI grid, right filter panel, white cards, light canvas, dark top navigation, rounded borders, and whether the page is sparse or dense.
chart_style: flat | gradient | outlined | shadowed
border_radius: none | soft | rounded
