CSS indentifiers not identified correctly

[toastal]

Describe the bug

Some characters are not being properly identified as identifiers—despite tree-sitter, at least in my editor, working correctly & browsers working correctly.

To Reproduce

Attempt to format

.Metric-range--0-¼ {
  --Metric-track-gradient: var(--greenLight), var(--green), var(--yellowLight) 27%, var(--yellow), var(--orangeLight) 53%, var(--orange), var(--red) 81%, var(--red);
}

$ topiary format test.css && echo "SAD"
[2025-09-18T10:19:03Z ERROR topiary] Parsing error between line 1, column 18 and line 1, column 20

But

/* no ¼ */
.Metric-range--0- {
	--Metric-track-gradient: var(--greenLight), var(--green), var(--yellowLight) 27%, var(--yellow), var(--orangeLight) 53%, var(--orange), var(--red) 81%, var(--red);
}

$ topiary format test.css && echo "SAD"
SAD

Expected behavior

Metric-range--0-¼ is a valid CSS identifier. No error.

Environment

• OS name + version: NixOS unstable
• Version of the code: topiary-cli 0.6.1

Additional context

Screenshot of Neovim’s :InspectTree identifying the identifier.