サイバー言語：サイバー・フィジカル・ソーシャル・シンキング融合空間のためのネイティブコミュニケーション

Human communication is undergoing a fundamental paradigm shift. Physical space, social relations, mental states, and digital information are converging into a unified cyber-physical-social-thinking (CPST) fusion space, rendering them no longer separable domains. However, all existing communication systems, including natural and programming languages, as well as interaction protocols, were designed for a world in which these four dimensions remained distinct. We introduce Cyberlanguage, a theoretically grounded communicative framework that is native to the CPST fusion space. Grounded in the philosophical orientation of cyberism and employing CPST theory as an analytical framework, Cyberlanguage possesses four core characteristics: native four-dimensional fusion, multi-agent universality, dynamic compilability, and contextual adaptability. We have constructed a semiotic model based on the Cybersign unit, a four-dimensional synchronous grammar, a five-layer architectural stack, and a context-driven pragmatic mechanism. We also present testable empirical predictions and a staged implementation roadmap. Cyberlanguage is not intended to replace natural or programming languages, but rather to serve as a meta-communication infrastructure capable of coordinating heterogeneous agents, humans, artificial intelligences, robots, and digital entities, within an increasingly fused cyber-physical-social-cognitive reality.