Gooey Blob System黏性 Blob 系统

Create a gooey blob system using SVG filters where multiple shapes merge into a single fluid form. Use overlapping circles combined with a Gaussian blur and color matrix filter to produce a continuous, organic mass. The forms should visually fuse and separate based on proximity. Focus on filter-driven merging (blur + threshold effect), soft organic boundaries with no hard edges, multiple independent shapes behaving as one system, and smooth continuous motion that feels fluid and cohesive.

使用 SVG filters 创建黏性 blob 系统，让多个形状融合成单一流体形态；重点是 blur + threshold 的 filter 驱动融合、柔和有机边界、多形状整体行为和连续流畅动效。