You are usually told to choose one: a premium design that feels expensive, or a fast site that passes the technical audits.
The agencies building the first one hand you a beautiful site that fails every performance and accessibility check. The agencies building the second hand you a fast site that looks like a template.
We reject the choice. Design is the difference, but engineering is what makes it hold up.
We just pushed the Nemo site to a perfect 100/100 on Google Lighthouse across every category: Performance, Accessibility, Best Practices, SEO, and the new Agentic Browsing standard. The human sees fluid animation and premium craft. The AI agent sees instant performance and clean architecture.
Here is what actually trips up most premium sites behind the scenes, and how we cleared the board.
The splash screen penalty
A loading screen delays the visual render. Lighthouse penalizes this heavily in its performance scoring.
Most premium sites mask their hero text while waiting for an animation library to load. That delay tells an agent the page is slow. We dropped the CSS masking and let the text render immediately. The animation still takes over, but the Largest Contentful Paint drops under 1.5 seconds. The human sees the same polish. The agent sees instant performance.
Focus traps in hidden menus
A hidden menu must not contain focusable links. AI agents get confused when they focus on invisible elements.
An off-canvas menu is usually visually hidden, but the links stay active in the background. To an agent parsing the accessibility tree, those links look active. We swapped standard hiding for the HTML `inert` attribute. When the menu is closed, it ceases to exist in the accessibility tree. The agent reads exactly what the human sees.
The new llms.txt standard
Language models need a map. A raw text file with URLs is not a map.
We had a text file serving as a guide for language models. It failed the audit because it used raw URLs instead of Markdown links. Agents expect a structured Markdown file. We converted our directory to Markdown syntax. The audit cleared instantly, providing a clean, semantic map of the site for any visiting model.
The result
A perfect 100 across Performance, Accessibility, Best Practices, SEO, and Agentic Browsing.
Details matter. When something breaks, we show you why and fix it. This is the standard we hold for our own work. It is the standard we hold for yours.