Rose Jewel 动漫应用海报

Goal: Create a vertical mobile promotional anime poster for {argument name="app name" default="SynClub"}, themed around {argument name="flower motif" default="roses"} and luxurious gemstones.

Canvas: Tall smartphone aspect ratio, 9:16, full-bleed illustration with a darkened promotional footer overlay at the bottom.

Main subject: A close-up fantasy anime portrait of an elegant young woman from the chest up, centered and facing forward. Her face is mostly covered by a large centered square privacy mask, a soft pastel gradient block shifting from dusty pink on the left to lavender-blue on the right. Visible details include long flowing pastel hair in white, pink, lavender, and pale blue, glossy strands curling around her shoulders, fair skin, and a small visible mouth below the mask.

Costume and accessories: She wears an ornate silver-white jeweled headpiece like a tiara or halo arch with filigree details and blue gemstones. Add exactly 1 rainbow rose tucked near the left side of her hair, with red, yellow, green, blue, and violet petals. Her neckline is covered with elaborate crystal lace jewelry, silver filigree, pearls, and blue teardrop gemstones, including exactly 1 large bright blue teardrop pendant at the center of her chest and exactly 1 smaller diamond-shaped blue pendant hanging beneath it. Her dress is pale, delicate, and bridal, with translucent lace, sparkling highlights, and gem-like embroidery.

Foreground and background: Use a soft dreamy pastel fantasy background with vertical stained-glass-like light streaks in pink, yellow, cyan, and violet. Add exactly 1 red rose in the lower-left foreground, partly overlapping the dress. Keep the illustration highly polished, luminous, romantic, and detailed, with an ethereal manga style and glossy digital painting finish.

Text and promotional overlay: Add faint white Japanese text near the top reading {argument name="top notice text" default="この画像はAIにより生成されるものです"}. At the bottom, place a dark black-to-transparent gradient footer containing exactly 4 promotional elements: 1 red chat-face icon on the far left, 1 white brand wordmark reading {argument name="brand wordmark" default="SynClub"} with “Club” in bold, 1 small Japanese call-to-action reading {argument name="call to action" default="今すぐチャットしよう！"}, and 1 black-and-white QR code in a rounded white square at the bottom right.

Constraints: Preserve the face-obscuring square mask, keep all text legible, use no extra characters, include exactly 2 roses total, and maintain a polished vertical social-media advertisement composition.