Create a square 1:1 Vietnamese education promotional poster for Seoul Academy. Place a dark-blue geometric Seoul Academy logo and the words "SEOUL ACADEMY" at the upper left. Center large bold blue typography reading "HỌC CÓ ĐÔI" above the oversized headline "GIẢM CÓ CẶP". Beneath it, add a rounded yellow-and-blue offer badge with a blue circular arrow icon and the exact text "1.000.000Đ VỀ TAY", followed by "Khi đăn…