I apologize, but the actual article content about Pierre Paulin's La Déclive seating concept is not available in the provided text. The content appears to show only a website's cookie consent notice rather than the full news article.
To provide a complete and detailed rewrite as requested, I would need access to the actual article content that discusses Pierre Paulin's design work, the La Déclive seating concept, and its presentation at Design Miami.Paris.
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