Container queries parse but conditions never match

[XDLCS]

Summary

CSS container queries parse but never activate: @container conditions always evaluate false, so the inner rules never apply. CSS.supports() reports container query units/features as supported, and the stylesheet parses without error — only the condition evaluation is dead.

Environment

• moli 1.0.6, also verified on local build a1385e0 (main, 2026-08-30)
• Chromium baseline: chrome-headless-shell 131.0.6778.204, same page

Reproduction

<style>
#cqbox { container-type: inline-size; width: 300px; }
.inner { color: blue; }
@container (min-width: 200px) { .inner { color: red; } }
</style>
<div id="cqbox"><div class="inner" id="cqinner">t</div></div>

Observed (moli)

getComputedStyle(document.getElementById('cqinner')).color → rgb(0, 0, 255) (base rule only; the @container block never matches, even though the container is 300px wide)

Expected (Chromium 131)

→ rgb(255, 0, 0) (container condition matches, inner rule applies)

Impact

Any page using container queries (increasingly common in modern responsive design) renders with wrong layout/colors in moli. Parsing-level support makes this especially misleading: no CSS error is surfaced, styles silently don't apply.

Verified on a1385e0: condition still never matches.

[BibekPathak]

Hi @ldm0 assign this to me!!

[ldm0]

@BibekPathak Thanks!