Arknights: Endfield by GuguGaga

A dark, industrial Firefox theme inspired by Arknights: Endfield. Features translucent smoked-glass toolbars, high-contrast hazard yellow accents, and a tactical HUD aesthetic for the sidebar, URL bar, and popups.

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About this theme

This is a fan-made, unofficial static theme for Firefox inspired by the dark, tactical UI aesthetic of Arknights: Endfield.

DISCLAIMER: This theme is not affiliated with, endorsed by, or connected to Gryphline or Hypergryph. It is a purely fan-created color scheme and does not copy, redistribute, or imitate any official assets, logos, or copyrighted artwork from the game.

The theme uses a deep charcoal base (#121212 / #1A1A1A) paired with a hazard yellow accent (#FFFA00) to create a high-contrast, industrial look.

Key visual features:

Smoked-glass toolbars: Semi-transparent dark panels for the header and popup menus.
Glowing yellow accents: Toolbar icons, active tab text, and URL bar text use the yellow accent for a "targeting system" feel.
Tactical sidebar: Dark backgrounds with yellow borders and highlight states.
Readable popups: Menus use a dark background with yellow highlights and black text for contrast.

Tested on: Firefox 130+ (Desktop). No special permissions or external assets are required; all styling is self-contained.

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