[Enhancement] Adhere to the `prefers-color-scheme`.

Currently, the website solely appears to support `color-scheme: light`:

<p></p><img width="638" height="358" alt="Image" src="https://github.com/user-attachments/assets/d8e0150f-a65e-4bff-b269-6328e1fac16c" /><p></p>

…which is inaccessible, when my `prefers-color-scheme` is `dark` as is inherited by my internet browser, from my DE (via the `freedesktop` `color-scheme` preference).