Design a Diwali greeting card in a {{design_style}} style. The scene: rows of small clay diyas with steady flames lining a doorstep at dusk, garlands of orange and yellow marigolds, a rangoli of flower petals and colored powder on the ground, and a few soft bursts of fireworks in a deep indigo sky. Warm lamplight glows on every surface, with gentle bokeh from string lights. Palette: saffron, marigold orange, magenta, peacock blue and touches of gold against deep indigo. Keep the lamps in the lower third and calm space above. At the top, elegant lettering reads exactly: "{{card_message}}". Spell it exactly as written, and add no other words. Keep the imagery to lamps, flowers, light and pattern, with no deities or religious figures, so the card suits Hindu, Sikh and Jain families alike and nothing sacred is drawn carelessly. No logos or watermarks. Format: {{aspect_ratio}}.