Create a soft editorial lifestyle poster for {argument name="event date" default="4.26"} celebrating Japanese bath culture, designed like a refined magazine feature page in portrait orientation. The layout is split into two main columns with a pale cream and warm gray background, thin divider lines, elegant serif typography, and muted sage-green accents. At the top left, include the small heading “LIFESTYLE / FEATURE”, then a large date line reading “{argument name="event date" default="4.26"} EVENT”, followed by the large Japanese title “よい風呂の日” and the subtitle “特集” in sage green, with a sma