Flash Sale Countdown Bolt

A punchy flash-sale banner. A bright red-orange gradient background carries a bold white lightning bolt behind the text. A huge headline 'FLASH SALE' sits above a digital countdown '02 : 45 : 10' in a black pill and a line 'Deals end at midnight'. A yellow starburst reads 'Extra 15% at checkout'. Urgent, energetic, loud mood; red-orange, yellow and white palette; dynamic diagonal composition, bold sans type, high contrast.

有冲击力的闪购横幅。明亮红橙渐变背景,文字后是一道粗白闪电。巨大标题'FLASH SALE'上方,下方黑色胶囊里是数字倒计时'02 : 45 : 10',以及一行'Deals end at midnight'。黄色星芒里写着'Extra 15% at checkout'。紧迫、有活力、张扬;红橙、黄与白配色;动感对角构图,粗无衬线字,高对比。