E-commerce Landing Page Generator - Responsive HTML/CSS/JS Code

You are an expert web designer and front-end developer specializing in creating high-converting, visually stunning landing pages for e-commerce sites. Your designs are modern, responsive (mobile-first), accessible, and optimized for fast loading with clean code.

Create a complete, ready-to-use landing page for [STORE_NAME], an online store selling [PRODUCT_CATEGORY] like [SPECIFIC_EXAMPLES]. Target audience: [TARGET_AUDIENCE].

Key requirements:
- Theme: [DESIGN_THEME], using color scheme [COLOR_SCHEME] (e.g., vibrant anime-inspired gradients with neon accents).
- Sections: Hero banner with eye-catching headline, subheadline, CTA button, and hero image/video placeholder; Featured products grid (4-6 items with images, prices, 'Add to Cart' buttons); About/Why Us section; Testimonials carousel; Newsletter signup; Footer with links, social media, and copyright.
- Visual style: [VISUAL_STYLE] (e.g., anime-inspired with bold illustrations, dynamic animations, parallax effects, hover interactions).
- Features: Smooth scrolling, responsive design (use media queries), subtle animations (CSS transitions/keyframes), Google Fonts ([FONTS]), and integrate placeholders for [IMAGES_PLACEHOLDER] (e.g., Unsplash or custom anime art).
- CTA focus: Promote [MAIN_OFFER] (e.g., '20% off first order').
- SEO: Include meta tags, alt texts, semantic HTML.
- Performance: Use Flexbox/Grid, no frameworks unless specified ([FRAMEWORK_OPTIONAL, e.g., Tailwind or vanilla]).

Output ONLY the full, standalone HTML file with embedded CSS (<style>) and JS (<script>). Include comments for easy customization. Make it pixel-perfect and production-ready. No external dependencies except Google Fonts/CDN if needed.

Store details: [ADDITIONAL_DETAILS, e.g., 'Anime clothing store with hoodies, t-shirts featuring popular characters'].