Father's Day Silhouette Poster Design

Generate a vertical 9:16 Father's Day themed poster with the theme "[Main Title]".

The background is the 【Seasonal Atmosphere】, with overall color tones of 【Main Color 1】, 【Main Color 2】, and 【Secondary Colors】, featuring soft-focus light and shadow, airy feel, slight grain, and premium blank space. The visuals should be warm, quiet, companionship, and nostalgic, avoiding cheap holiday promotions.

The main image is a silhouette interaction scene between father and child: [Specific actions, such as father holding the child's hand while walking / father pushing the child while riding a bike / father carrying the child on his back / father helping the child tie his shoelaces]. The characters only show their outlines, not their facial features, focusing on fatherly love, companionship, protection, and growth.

Complete layout:
The Chinese handwritten title in a large margin at the top reads "[Main Title]".
Add the English 'Father's Day' to the trumpet next to the title.
On the left, add a vertical Chinese short sentence titled "[Vertical Copywriting]".
In the blank space in the middle of the image, add a line of emotional caption: "[Main Copy]."
The English serif at the bottom is titled "HAPPY FATHER'S DAY."
At the bottom, the date "06/21" and the alt Chinese phrase "Happy Father's Day" are added.

Overall style: Father's Day posters, parent-child silhouettes, summer light and shadow, soft-focus photography, solar term posters, premium magazine layout, warm and healing, low-saturation colors, Oriental blank space.

Requirements: Chinese text must be clear and accurate, no garbled text, no logos, no watermarks, no QR codes, no cartoons, no promotional templates.