Design a bold vertical app marketing graphic in the Format, with the Headline set prominently beside a modern smartphone mockup. Place the App Name above the headline in smaller supporting type. Show the Hero Screen Content clearly inside the phone as a polished mobile app interface with readable hierarchy, realistic controls and strong visual focus. Use the Color Palette throughout the background, typography, phone accents and interface details. Build the composition with generous negative space, crisp geometric typography, high contrast and an energetic editorial feel. Keep the phone slightly angled but easy to read, with subtle depth and a controlled shadow. Make the headline the dominant element and ensure every word is rendered exactly as provided. The result should look like a finished paid social ad for a language-learning app, with no extra logos, filler copy or illegible interface text.
Use these details:
Headline: "Learn a language in 10 minutes a day"
App Name: "LingoLoop"
Hero Screen Content: "Daily Spanish lesson with a five-question vocabulary challenge, progress streak, and 10-minute timer"
Color Palette: "cobalt blue, warm yellow, white and charcoal"
Format: "9:16 vertical"
