Subway Birthday Billboard

Goal: Create a realistic smartphone-style photo taken in a subway station, showing a young woman posing beside a large wall-mounted digital birthday advertisement for a K-pop idol.

Canvas: Horizontal 3:2 photo, eye-level perspective, natural indoor station lighting, slight wide-angle lens look.

Setting: Clean subway corridor with glossy off-white square tiled walls and dark grout, gray stone floor, black base trim, ceiling panels visible at the top, and a small green rectangular sign on the left wall. A large black-framed digital billboard is mounted on the tiled wall, occupying most of the right side of the image.

Main subject: One young woman stands on the left side of the frame in front of the billboard. She has long dark wavy hair and wears a sleeveless short white summer dress with thin straps and a small bow at the chest. She smiles toward the camera, but her face is covered by a soft-edged opaque taupe privacy rectangle. Her pose uses exactly two pointing gestures: her left hand points across her body toward the billboard, and her right hand points upward toward the billboard.

Billboard design: The digital screen shows a pastel pink-and-sky-blue birthday fan ad with sparkles, stars, soft clouds, translucent heart shapes, and a magical swoosh arc in the top-right. On the left half of the billboard is a large glamour portrait of a young woman with long dark hair and bare shoulders; her face is also covered by a large opaque taupe privacy rectangle. The billboard has exactly six visible text elements: 1) small English greeting at the top, 2) large Korean name in teal, 3) date line, 4) large Korean birthday phrase, 5) smaller Korean congratulatory message, 6) teal rounded footer label.

Text content: Use the top greeting {argument name="top greeting" default="Happy Seul Day"}. Use the large central Korean name {argument name="idol name text" default="윤슬"}. Use the date {argument name="birthday date" default="1996.02.15"}. Use the birthday phrase {argument name="birthday phrase" default="여신 탄신일"}. Use the small message and footer text {argument name="fan message" default="사랑스러운 윤슬아, 생일 축하해! 언제나 빛나는 너를 응원해 ♥ / from. 슬의 모든 순간을 사랑하는 팬들"}. Typography should be elegant teal serif-like Korean lettering, with the name largest, the birthday phrase second largest, and the footer in white text inside a teal rounded rectangle.

Visual style: Photorealistic candid fan photo, realistic shadows and reflections on the digital screen, crisp billboard details, slightly muted station colors contrasted with the bright pastel ad. Do not add extra people, extra posters, watermarks, or additional text beyond the six specified text elements