扁平化手绘风办公学习文件证书元素

Low-saturation flat minimalist exam and assessment icons on white background, soft muted color palette with maximum two colors per icon, pixel-perfect vector style, exam paper with pencil in dusty rose and light gray, answer sheet with bubbles in soft blush and cream, grade report with stars in muted coral and off-white, certificate with seal in dusty peach and light beige, diploma with scroll in soft salmon and cream, test score with graph in muted terracotta and gray, quiz with checkmark in dusty melon and light gray, homework with book in soft apricot and cream, assignment with clip in muted peach and sand, nine icons evenly distributed in three rows and three columns, clean geometric shapes with harmonious low-saturation palette, no facial expressions, pure minimalist assessment representation.