principle / Primitive values only at L1Primitive values only at L1只有 L1 Global / Primitive 层允许保存原始颜色、尺寸、字号、时长和缓动值；上层只能引用或组合这些基础值。Related contentRelationships come from the local knowledge graph and include reverse links.Abstract Design Token System Case Study四层 Design Token 系统案例（Abstract Design Token System Case Study）一个独立的抽象 Design System case study，用 L1 Global、L2 Semantic、L3 Component Contract、L4 State / Variant 解释 Token 的职责边界、继承方向和组件使用方式。Reverse · Related