CI stands for "corporate identity." This would be, for example, the Golden Arches of McDonald's or Microsoft's four colored squares (window panes) that embody the corporation's values in a clever design and establish immediate recognition in the mind of consumers.
CI 的原意是指企業識別標誌（Corporate Identity），例如麥當勞的金拱門、微軟的四色方塊等，將企業的核心價值和精巧設計融為一體，讓消費者一眼即可辨識。