Create a 9:16 vertical mobile livestream shopping interface in a brand-neutral short-video app style. Show a clearly adult young Asian female fitness streamer at home presenting yoga pants for an ecommerce live session. She wears fitted yoga pants and a simple athletic top, standing sideways to demonstrate the fabric lines, stretch, fit, and comfort of the pants with a natural, non-exaggerated pose. Include a realistic home livestream background, soft room lighting, viewer avatars, follow button, live ranking badges, gift animations, floating hearts, chat comments, product-interest messages, and a bottom comment/input bar. The UI should feel like a polished mobile livestream screen, with readable Chinese interface text, balanced overlays, and a clear product-demonstration context. Keep the styling commercial, fitness-oriented, and fashion-ecommerce focused rather than explicit. Avoid real platform logos, copied Douyin/TikTok UI marks, private information, underage appearance, nudity, transparent clothing, explicit sexual posing, fetish emphasis, voyeuristic framing, offensive chat, extra watermarks, unreadable UI text, distorted hands, broken body anatomy, and low-resolution artifacts.