Design a 16:9 presentation canvas featuring a 3:4 vertical poster for a new Chinese-style tea drink product launch. Use a modern new-Chinese visual style with a restrained light-luxury feeling. The color palette should use deep green, rice white, and gold, with xuan-paper texture, generous white space, landscape-painting accents, and modern editorial layout design.
Main subject: an attractive cold-brew tea drink with tea leaves, citrus, ice cubes, and a few subtle gold-foil details.
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"
Small-print text:
"图片仅供参考,请以门店实际售卖为准"
Keep the overall design premium and refined while preserving a clear promotional hierarchy. Do not make it look cheap or overly e-commerce-like. Pay special attention to small text, numbers, prices, information modules, and beautiful Chinese typography. Output aspect ratio: 16:9.