Lato 2.015
Unmodified Lato Regular and Bold, version 2.015 (2015-08-06).
Copyright (c) 2011-2015 by tyPoland Lukasz Dziedzic (http://www.typoland.com/), with Reserved Font Name "Lato". Licensed under the SIL Open Font License, Version 1.1; the complete license is in OFL.txt and the copyright/license metadata is embedded in both fonts.
The binary files were copied from the project's pinned QEMU Windows 11.1.0 distribution, share/doc/_static/fonts/. The exact archive URL and SHA512 are in the root tools-lock.json; each font's SHA256 is fixed in Manifest.json. Upstream project: https://www.latofonts.com/ ; license text source: https://raw.githubusercontent.com/google/fonts/main/ofl/lato/OFL.txt .
Web rendering uses Lato as its explicitly reported fallback for system-ui, Segoe UI and other unavailable proportional sans fonts. Existing Cascadia Mono is the fallback for Consolas and other unavailable monospace fonts. The original webpage CSS is unchanged. No Windows Segoe UI or Consolas binary is embedded, and the fallback cannot provide pixel equality with those fonts. Desktop and terminal text continue using their existing font path. The native renderer converts CSS em units using the actual font head/hhea tables and measures real advances and kerning through the pinned Cosmos TrueTypeFont API.