Lit light bulb icon. 插畫檔

Vector illustration of a lit, stylized light bulb, presented in four colorful variations with long shadow: yellow on grey, green on blue, blue on beige, yellow on mint green background. This icon symbolizes ideas, creativity, innovation, or solutions. Modern flat style with clean lines and long shadow effect. Perfect for educational content, brainstorming, tech projects, personal development, or innovation-related designs.