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However, how different molecular species cooperatively regulate condensate mechanics remains poorly understood. In this study, we integrated Raman\u2013Brillouin imaging with fluorescence recovery after photobleaching (FRAP) analysis to quantify the molecular composition, mobility, and high\u2010frequency viscoelastic responses of multicomponent condensates composed of heterochromatin protein 1\u03b1 (HP1\u03b1), DNA, and lipids. DNA incorporation rendered condensates morphologically distorted yet mechanically soft, while DNA within the condensates exhibited limited mobility, suggesting the formation of partially immobilized DNA\u2010rich structures that shape the condensate morphology without rigidifying the interior. Subsequent lipid incorporation selectively confined HP1\u03b1 mobility and increased condensate viscoelasticity without altering the DNA dynamics. These results reveal the opposing mechanical effects of DNA and lipids, arising from distinct DNA\u2013protein coupling states within the condensates. DNA\u2010rich structures exhibit dynamics decoupled from HP1\u03b1 within the same condensates, whereas lipid incorporation enhances effective DNA\u2013protein coupling, thereby reinforcing condensate mechanics. 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