warm healing watercolor style, casual merge mobile game U...

warm healing watercolor style, casual merge mobile game UI element, transparent background, soft hand-painted watercol or texture, warm gentle tones, polished casual game aesthetic, clean minimal design, no text, no watermark, no border cell_bg 棋盘格子背景（建议尺寸 96×96）： a single square board cell background tile, soft warm cream or light beige color, rounded corners, gentle watercolor p aper or light wood texture, subtle grain, clean and minimal, cozy and readable, no shadow, no frame cell_highlight 格子高亮（建议尺寸 96×96）： a single square board cell highlight frame, soft warm yellow or pale green glow, rounded corners, watercolor wash text ure, subtle gentle glowing hint for valid placement, light and airy, clean readable silhouette, no solid fill inside cell_blocked 被封锁格子（建议尺寸 96×96）： a single blocked board cell icon, soft muted warm gray or taupe tone, rounded corners, gentle watercolor texture, subt le faint cross or crack mark in center, inactive disabled feel but still warm, clean minimal, no harsh dark colors item_shadow 拖拽阴影（建议尺寸 128×128）： a soft round item drop shadow, gentle warm dark gray or soft brown shadow, watercolor bleeding edge, semi-transparent soft gradient, centered circular shadow for dragged objects, smooth and diffused, no hard edges, no object in center merge_particle 合成粒子（建议尺寸 32×32）： a tiny merge sparkle particle icon, small warm golden or creamy white star shape, soft watercolor glow and gentle blee ding edges, cute and minimal, centered composition, brightest at center, cozy magical feel, no background