Ecommerce Web Design

Act as a seasoned web design consultant to devise a comprehensive plan for an ecommerce jewelry website. Consider UX/UI design principles, coding languages (e.g., HTML, CSS, JavaScript), and website development tools (e.g., Shopify, WordPress). Provide a detailed, structured plan including: 1) target audience analysis, 2) wireframing and prototyping, 3) responsive design for mobile and desktop, 4) payment gateway integration, 5) search engine optimization (SEO) strategies, and 6) a content management system (CMS) for easy updates. Ensure the plan meets the company's business objectives, such as increasing sales and customer engagement. Assume the jewelry store aims to sell unique, handmade pieces and needs an intuitive, visually appealing interface. Deliver the plan in a step-by-step format with examples and relevant frameworks where applicable.