A polished desktop web app dashboard screenshot for a fictional renewable energy service. Wide landscape canvas, professional pixel-perfect interface, light gray background, white rounded cards with subtle shadows, deep navy text and mint green highlights. Left navigation sidebar with green geometric logo and clear brand name exactly "LUMA". Menu items exactly "Overview", "Energy", "Reports", "Settings" with simple icons. Top heading exactly "Energy overview". Upper right rounded green button exactly "Export report". Three metric cards in a row labeled exactly "Solar output", "Home usage", "Battery level", showing respectively "18.4 kWh", "12.6 kWh", "82%" in large clean numbers. Large main card titled exactly "Weekly energy" contains two elegant green and navy smooth line charts, seven short axis labels "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun". Right side card titled exactly "Your home" with a charming miniature isometric house, solar roof and a small green pill exactly "All systems online". Bottom a single slim banner exactly "Clean energy. Clear decisions." Crisp vector-like UI, carefully aligned spacing, believable useful data visualization, no browser chrome, no photograph, no additional text.