Check (iii) flagged two shapes the package's own stylesheets (and their stylesheet tests) already treat as fine: `linear`, M3's own easing for continuous motion (an indeterminate progress indicator's rotation), and a box-shadow that is only an inset or outline-style ring — `[inset] 0 0 0 <n>px` in a `var(--md-sys-color-*)` role, or one `color-mix()`-dimmed for a disabled ring — the shape a focused field's edge or a day's "current" outline draws. A blurred shadow or one with a literal colour is still reported. Plan step 42 (Phase F), Part B. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9