The latest revision by 26 August 2024 can be [downloaded].
Seed is designed to be compatible for all desktops, tablets and mobile phones, when <meta name="viewport" content="width=device-width, initial-scale=1"> is added to $UserHeader. Seed can also switch the light and dark modes based on the settings of the user's operating system.
For reaching the goal of being a potential default skin, none of special decoration, web fonts and hacks is included in the single CSS file, and no JavaScript code is required.