崩坏：星穹铁道-卡芙卡·第03期手机壁纸

vertical 9:16 mobile phone wallpaper composition, portrait orientation. A high-quality illustration featuring Kafka from Honkai: Star Rail (long wine-purple hair, violet eyes, mature elegant woman). Use natural balanced overall proportions and a relaxed everyday presentation. wearing an adult collegiate sailor-inspired fashion outfit with a pleated skirt, opaque fabric, complete upper-body coverage and a comfortable modest fit, fully replacing the original costume while retaining only identity-defining physical traits; do not retain original clothing, weapons, headwear, masks, armor, capes, wings, costume accessories, decorative props, companions, or signature ornaments. Use comfortably fitted opaque clothing with complete coverage, neat tailoring and natural fabric folds. set in a sunlit university seminar classroom, clearly adult collegiate environment, afternoon light through large windows, modern university interior, lecture desks, presentation board. looking at the viewer, calm relaxed pose, not casting any skill or ability. cleanly detailed, smooth rendering with soft gradients and clean flat color areas, minimal grain or noise, clearly adult character, fashion-forward styling faithful to the specified outfit design.