Premium minimalist homepage hero banner for a digital ebook store, abstract system and knowledge-inspired visual, soft deep blue and neutral gradient background, subtle geometric lines and connected nodes suggesting clarity and structure, calm intelligent mood, high-end ecommerce aesthetic, centered headline text: "Turn Knowledge Into Results" modern sans-serif typography, white or soft off-white text, excellent spacing and kerning, ample negative space, no people, no icons, no clutter, professional brand-level quality
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