Subject: The image contains 15 line-art coloring-style flat icons, covering camera, backpack, pushpin, padlock, trophy, microphone, gear, data display, briefcase, alarm clock, graduation cap, bullseye, toolbox, handheld microphone, hourglass. Scene: Pure light mint green background, no extra decorative elements, only highlighting the foreground icon subjects through a simple background, overall presenting a clean icon display atmosphere. Style: Cartoon line-art flat icon design style, outlining shapes with black contour lines, flat color application, clear and crisp lines, with slight isometric perspective expression. Color palette: Mainly fresh mint green, light green, cyan blue and white, matched with black contour lines, fresh and soft colors, overall presenting a refreshing and lively visual effect. Lighting: Overall flat light with no shadow effect, uniform and clean colors, no light and shade contrast, highlighting the refreshing texture of the line-art flat style. Composition: 5×3 grid symmetrical composition, 15 icons arranged neatly in five rows and three columns, even horizontal and vertical spacing, balanced and stable画面, each icon occupies independent space, no occlusion, overall neat and orderly. Usage: Suitable for learning and office APP interface icon design, educational UI decorative elements, tool game prop icons, cultural and creative product design materials, flat-style web decorative elements, planner decorative sticker materials.