A copy deck is a single document (usually written in Microsoft Word) that contains all the necessary bits and bobs for a given copywriting project. The term 'copy deck' is often used in advertising agencies, where it's also known as a 'copy platform'.

با توجه به تعریف فوق این‌معادل رو پیشنهاد کردم که بهتره البته عنوان انگلیسی رو هم توی پرانتز ذکر بفرماین

برگ راهبرد/استراتژی تبلیغات (deck copy)

the deck is one or more lines of text found between the headline and the body of the article. The deck elaborates or expands on the headline and topic of the accompanying text. Decks are set in a typeface that is sized somewhere between the headline and body text to provide contrast.