CSS you can prove.

Author visible utilities in Rust. Ship ordinary static CSS. Trace every identity, diagnostic, and physical declaration back to intent.

Open the laboratory Read the docs ↗

STATIC CSS60 UTILITY FORMS51 THEME TOKENS3 BREAKPOINTS128-BIT STYLE IDZERO STYLING RUNTIME

DIRECT MANIPULATION / EXACT OUTPUT

Design the surface.Inspect the consequence.

Change the component, viewport, and state. Every selectable recipe was compiled by this repository’s PliegoCSS binary before the page was built.

STYLE / B312…

One visible intent.

Stable identity, ordinary output, replayable evidence.

manifest schema 3modern target

FAIL CLOSED / BEFORE THE BROWSER

The cascade should not be a crime scene.

Place two values in the same semantic slot and PliegoCSS refuses to guess. Move one value into a narrower condition and the state space becomes explicit.

REJECTEDPCS005

p-4 p-6

Utilities assign conflicting values in the same condition.

Remove one utility or move it to a narrower variant.

ONE SEMANTIC FOLD

Source becomes proof, not mystery.

A style starts as visible intent, lowers into typed slots, resolves conflicts, emits CSS, and remains traceable to physical declarations.

01ParseVisible utilities and standard CSS
02LowerTyped semantic slots and conditions
03ResolveExplicit conflict and precedence rules
04EmitStatic CSS plus canonical evidence

pc!("grid gap-4\nrounded-xl shadow-md")

→ pc_1k3…
→ .pc_1k3… { display:grid; … }
→ manifest + lineage

60GENERATED UTILITY FORMS

ONE CATALOG / EVERY TOOL

Parser. Completion. Diagnostics. Reference.

The same generated catalog drives compiler semantics and the searchable website reference. No hand-maintained marketing inventory.

Explore all utility forms

NO UNLABELED GREEN

Evidence keeps its authority.

SOURCE → EVIDENCE → AUTHORITYNo artifact inherits more authority than its evidence.

MEASURED

Current source, direct execution

Focused Rust tests, deterministic output, browser computed styles, or registry replay performed on the identified source.

INHERITED

Valid history, limited authority

Useful context from an earlier commit that cannot green-light changed source.

PENDING

Required, not yet performed

Visible blockers stay blockers. No documentation sentence turns them into a pass.

THE OUTPUT IS THE PRODUCT

Make CSS observable.

Use the real laboratory, inspect the full catalog, then adopt only the surfaces your project needs.

Enter the playground