构想 (gòu xiǎng) means to conceive or formulate a deliberate idea or plan, often in a systematic or strategic way (e.g., an economic model). As a verb, it is more concrete and purposeful than 想象 (imagine freely) or 设想 (envisage speculatively); as a noun, it refers to a conceived concept or plan, distinct from 概念 (general concept) or 观念 (outlook/belief). For creative works, 构思 (gòu sī) is the more specific term.