Chinese Tea Drink Product Launch Poster

Design a 3:4 vertical poster for a new Chinese trendy tea launch. Use a New Chinese visual style that feels light-luxury and restrained. The palette should be dark green, off-white, and gold, with rice-paper texture, elegant negative space, landscape accents, and modern layout design.

Main subject:
a visually appealing cold-brew tea with tea leaves, citrus, ice cubes, and touches of gold foil.

The poster must accurately display the following exact Chinese copy:
"山川茶事"
"山柚观音"
"冷泡系列"
"新品上市"
"一口清醒，半城入夏"
"限定尝鲜价"
"中杯 16 元"
"大杯 19 元"
"门店活动"
"第二杯半价"
"加 3 元升级轻乳版"
"每日前 100 名赠限定杯套"
"推荐风味"
"观音茶底 / 西柚果香 / 轻乳云顶 / 冰感回甘"
"活动时间 4月20日 至 5月10日"
"扫码点单"
"SHANCHUAN TEA"

Fine print:
"图片仅供参考，请以门店实际售卖为准"

Maintain a clear promotional hierarchy while keeping the overall feeling sophisticated rather than cheap or overly e-commerce-like. Pay special attention to small text, numbers, prices, info modules, and Chinese typography aesthetics.