Create a sophisticated 16:9 editorial cover image for a Medium article titled “Inside Restaurant Agency Studio: 7 Styles and 10 Niche Packs Explained.” Show a premium design-studio desk with a large laptop displaying seven miniature, visually distinct fictional restaurant website homepage cards in a refined grid. Each card suggests a different atmosphere: elegant editorial dining, dark brass steakhouse, terracotta courtyard, art deco restaurant, playful social burger spot, warm heritage café, and bold modern kitchen. Include subtle food and hospitality cues, a menu card, reservation symbol, and color swatches, but no brand logos and no readable gibberish text. Use a warm cream, terracotta, deep green, charcoal, and gold palette. Modern product-design editorial style, high-end SaaS illustration, clean negative space on the left for a headline, realistic lighting, polished and uncluttered, no watermark.