diff --git a/LICENSE b/LICENSE
index e78443e..ca7c2db 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2026 Klink
+Copyright (c) 2026 Chris Klink
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index ce57dd6..db74c31 100644
--- a/README.md
+++ b/README.md
@@ -589,6 +589,11 @@ If you'd rather not add a dependency, copy the source directly. Click to expand
 <!-- BEGIN:dist/tailwind/utils.css -->
 
 ```css
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 /* ── Squircle utilities ─────────────────────────────────────── */
 /* squircle-amt-[n] sets the superellipse amount (default 2)    */
 /* squircle-* mirrors rounded-* variants: all, t, r, b, l, s, e, tl, tr, br, bl, ss, se, es, ee */
@@ -758,6 +763,11 @@ If you'd rather not add a dependency, copy the source directly. Click to expand
 <!-- BEGIN:dist/radius-function.css -->
 
 ```css
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 /* ── squircle-radius() ────────────────────────────────────────
  * Computes the visually-corrected border-radius for use with
  * corner-shape: superellipse(). A superellipse corner appears
@@ -790,6 +800,11 @@ If you'd rather not add a dependency, copy the source directly. Click to expand
 <summary><strong><code>squircleMergeConfig</code></strong> — tailwind-merge conflict config</summary>
 
 ```js
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 import { extendTailwindMerge } from "tailwind-merge";
 
 const allRoundedGroups = [
@@ -837,6 +852,10 @@ export const twMerge = extendTailwindMerge(squircleMergeConfig);
 
 ````js
 import * as stylex from "@stylexjs/stylex";
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
 /**
  * StyleX squircle utilities — generated from this template by
  * `scripts/generate-stylex.ts`.
diff --git a/package/scripts/generate-squircle-css.ts b/package/scripts/generate-squircle-css.ts
index cb8d1f6..996e05a 100644
--- a/package/scripts/generate-squircle-css.ts
+++ b/package/scripts/generate-squircle-css.ts
@@ -31,6 +31,12 @@ function renderUtility(name: string, props: string[]): string {
 function generateCss(): string {
   const blocks: string[] = [];
 
+  blocks.push(`\
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */`);
+
   blocks.push(`\
 /* ── Squircle utilities ─────────────────────────────────────── */
 /* squircle-amt-[n] sets the superellipse amount (default ${DEFAULT_AMT})    */
diff --git a/package/src/panda.test.ts b/package/src/panda.test.ts
index 9fed014..7a805fc 100644
--- a/package/src/panda.test.ts
+++ b/package/src/panda.test.ts
@@ -17,10 +17,7 @@ describe("panda preset shape", () => {
 
   it("registers a utility for every CAMEL_VARIANTS entry plus squircleAmount", () => {
     const keys = Object.keys(preset.utilities!.extend!).sort();
-    const expected = [
-      ...CAMEL_VARIANTS.map((v) => v.property),
-      "squircleAmount",
-    ].sort();
+    const expected = [...CAMEL_VARIANTS.map((v) => v.property), "squircleAmount"].sort();
     expect(keys).toEqual(expected);
   });
 
@@ -119,23 +116,35 @@ describe("panda preset transform output", () => {
 
 describe("panda preset options", () => {
   const mockToken = Object.assign(() => "1rem", { raw: () => undefined }) as any;
-  const mockArgs = (raw: string) => ({ token: mockToken, raw, utils: { colorMix: () => ({ invalid: true, value: "" }) } });
+  const mockArgs = (raw: string) => ({
+    token: mockToken,
+    raw,
+    utils: { colorMix: () => ({ invalid: true, value: "" }) },
+  });
 
   it("custom amtVar lands in every place the default --squircle-amt does", () => {
     const preset = squirclePandaPreset({ amtVar: "--my-amt" });
 
-    const radiusOut = preset.utilities!.extend!["squircleRadius"]!.transform!("1rem", mockArgs("1rem")) as Record<string, unknown>;
-    const radiusSupports = radiusOut[
-      "@supports (corner-shape: superellipse(2))"
-    ] as Record<string, string>;
+    const radiusOut = preset.utilities!.extend!["squircleRadius"]!.transform!(
+      "1rem",
+      mockArgs("1rem"),
+    ) as Record<string, unknown>;
+    const radiusSupports = radiusOut["@supports (corner-shape: superellipse(2))"] as Record<
+      string,
+      string
+    >;
     expect(radiusSupports["--squircle-r"]).toContain("var(--my-amt, 2)");
     expect(radiusSupports["cornerShape"]).toBe("superellipse(var(--my-amt, 2))");
 
-    const amtOut = preset.utilities!.extend!["squircleAmount"]!.transform!("3", mockArgs("3")) as Record<string, unknown>;
+    const amtOut = preset.utilities!.extend!["squircleAmount"]!.transform!(
+      "3",
+      mockArgs("3"),
+    ) as Record<string, unknown>;
     expect(amtOut["--my-amt"]).toBe("3");
-    const amtSupports = amtOut[
-      "@supports (corner-shape: superellipse(2))"
-    ] as Record<string, string>;
+    const amtSupports = amtOut["@supports (corner-shape: superellipse(2))"] as Record<
+      string,
+      string
+    >;
     expect(amtSupports["cornerShape"]).toBe("superellipse(var(--my-amt))");
 
     const allOutput = JSON.stringify({ radiusOut, amtOut });
@@ -144,11 +153,11 @@ describe("panda preset options", () => {
 
   it("custom rVar threads through multi-prop side transforms", () => {
     const preset = squirclePandaPreset({ rVar: "--my-r" });
-    const out = preset.utilities!.extend!["squircleTopRadius"]!.transform!("1rem", mockArgs("1rem")) as Record<string, unknown>;
-    const supports = out["@supports (corner-shape: superellipse(2))"] as Record<
-      string,
-      string
-    >;
+    const out = preset.utilities!.extend!["squircleTopRadius"]!.transform!(
+      "1rem",
+      mockArgs("1rem"),
+    ) as Record<string, unknown>;
+    const supports = out["@supports (corner-shape: superellipse(2))"] as Record<string, string>;
     expect(supports["--my-r"]).toContain("calc(1rem");
     expect(supports["borderTopLeftRadius"]).toBe("var(--my-r)");
     expect(supports["borderTopRightRadius"]).toBe("var(--my-r)");
@@ -157,11 +166,11 @@ describe("panda preset options", () => {
 
   it("amtVar and rVar can both be overridden together", () => {
     const preset = squirclePandaPreset({ amtVar: "--a", rVar: "--r" });
-    const out = preset.utilities!.extend!["squircleRadius"]!.transform!("1rem", mockArgs("1rem")) as Record<string, unknown>;
-    const supports = out["@supports (corner-shape: superellipse(2))"] as Record<
-      string,
-      string
-    >;
+    const out = preset.utilities!.extend!["squircleRadius"]!.transform!(
+      "1rem",
+      mockArgs("1rem"),
+    ) as Record<string, unknown>;
+    const supports = out["@supports (corner-shape: superellipse(2))"] as Record<string, string>;
     expect(supports["--r"]).toContain("var(--a, 2)");
     expect(supports["borderRadius"]).toBe("var(--r)");
     expect(supports["cornerShape"]).toBe("superellipse(var(--a, 2))");
diff --git a/package/src/panda.ts b/package/src/panda.ts
index 6e3e764..8c88928 100644
--- a/package/src/panda.ts
+++ b/package/src/panda.ts
@@ -1,3 +1,8 @@
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 import { definePreset, type PropertyConfig } from "@pandacss/dev";
 import {
   CAMEL_VARIANTS,
@@ -31,9 +36,7 @@ export interface SquirclePandaPresetOptions {
  * `squircleTopLeft` mirror `roundedTopLeft`. The shape table is identical to
  * Panda's built-in radius utilities.
  */
-export function squirclePandaPreset(
-  options: SquirclePandaPresetOptions = {},
-) {
+export function squirclePandaPreset(options: SquirclePandaPresetOptions = {}) {
   const amtVar = options.amtVar ?? DEFAULT_AMOUNT_VAR_NAME;
   const rVar = options.rVar ?? "--squircle-r";
 
@@ -48,8 +51,7 @@ export function squirclePandaPreset(
     utilities[variant.property] = {
       shorthand: variant.shorthand,
       values: "radii",
-      transform: (value) =>
-        squircleCssObj(props, value, { amtVar, rVar, case: "camel" }) as any,
+      transform: (value) => squircleCssObj(props, value, { amtVar, rVar, case: "camel" }) as any,
     };
   }
 
diff --git a/package/src/squircle-css.test.ts b/package/src/squircle-css.test.ts
index 84246f5..e165a51 100644
--- a/package/src/squircle-css.test.ts
+++ b/package/src/squircle-css.test.ts
@@ -105,5 +105,4 @@ describe("squircle.css utilities", () => {
       expect(css).not.toContain("squircle-amt-");
     });
   });
-
 });
diff --git a/package/src/squircle-radius.css b/package/src/squircle-radius.css
index c551847..951bf22 100644
--- a/package/src/squircle-radius.css
+++ b/package/src/squircle-radius.css
@@ -1,3 +1,8 @@
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 /* ── squircle-radius() ────────────────────────────────────────
  * Computes the visually-corrected border-radius for use with
  * corner-shape: superellipse(). A superellipse corner appears
diff --git a/package/src/stylex.template.ts b/package/src/stylex.template.ts
index 4054324..50db85d 100644
--- a/package/src/stylex.template.ts
+++ b/package/src/stylex.template.ts
@@ -1,3 +1,8 @@
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 import * as stylex from "@stylexjs/stylex";
 
 /**
diff --git a/package/src/stylex.ts b/package/src/stylex.ts
index 7ff1cec..82a8bf5 100644
--- a/package/src/stylex.ts
+++ b/package/src/stylex.ts
@@ -5,6 +5,11 @@
 // To modify variant shape, edit `renderVariant` in the generator.
 // To add/rename variants, edit `CAMEL_VARIANTS` and `VARIANTS` in src/variants.ts.
 
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 import * as stylex from "@stylexjs/stylex";
 
 /**
diff --git a/package/src/tailwind.ts b/package/src/tailwind.ts
index f638b99..cd430d7 100644
--- a/package/src/tailwind.ts
+++ b/package/src/tailwind.ts
@@ -1,3 +1,8 @@
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 import plugin from "tailwindcss/plugin";
 import {
   DEFAULT_AMOUNT_VAR_NAME,
@@ -26,37 +31,37 @@ const squircle: ReturnType<typeof plugin.withOptions<SquirclePluginOptions>> =
   plugin.withOptions<SquirclePluginOptions>((options = {}) =>
     // eslint-disable-next-line @typescript-eslint/unbound-method
     ({ matchUtilities, theme }) => {
-      const amtVar = options.amtVar ?? options["amt-var"] ?? DEFAULT_AMOUNT_VAR_NAME;
-      const rVar = options.rVar ?? options["r-var"] ?? DEFAULT_R_VAR_NAME;
-      const prefix = options.prefix ?? "squircle";
-      const radiusValues = theme("borderRadius");
+    const amtVar = options.amtVar ?? options["amt-var"] ?? DEFAULT_AMOUNT_VAR_NAME;
+    const rVar = options.rVar ?? options["r-var"] ?? DEFAULT_R_VAR_NAME;
+    const prefix = options.prefix ?? "squircle";
+    const radiusValues = theme("borderRadius");
+
+    matchUtilities(
+      {
+        [`${prefix}-amt`]: (value: string) => ({
+          [amtVar]: value,
+          [SUPPORTS_RULE]: {
+            "corner-shape": `superellipse(var(${amtVar}))`,
+          },
+        }),
+      },
+      { type: "number" },
+    );
 
+    for (const [suffix, props] of variantEntries()) {
+      const name = suffix ? `${prefix}-${suffix}` : prefix;
       matchUtilities(
         {
-          [`${prefix}-amt`]: (value: string) => ({
-            [amtVar]: value,
-            [SUPPORTS_RULE]: {
-              "corner-shape": `superellipse(var(${amtVar}))`,
-            },
-          }),
+          [name]: (value: string) =>
+            squircleCssObj(props, value, { amtVar, rVar }) as Record<
+              string,
+              string | Record<string, string>
+            >,
         },
-        { type: "number" },
+        { type: "length", values: radiusValues },
       );
-
-      for (const [suffix, props] of variantEntries()) {
-        const name = suffix ? `${prefix}-${suffix}` : prefix;
-        matchUtilities(
-          {
-            [name]: (value: string) =>
-              squircleCssObj(props, value, { amtVar, rVar }) as Record<
-                string,
-                string | Record<string, string>
-              >,
-          },
-          { type: "length", values: radiusValues },
-        );
-      }
-    });
+    }
+  });
 
 export default squircle;
 
diff --git a/package/src/test-utils.ts b/package/src/test-utils.ts
index 72ad974..6d081cd 100644
--- a/package/src/test-utils.ts
+++ b/package/src/test-utils.ts
@@ -46,7 +46,8 @@ async function loadModule(id: string, base: string, _resourceHint: "plugin" | "c
 }
 
 function extractUtilitiesLayer(css: string): string {
-  const match = /@layer utilities \{([\s\S]*)\}\s*$/.exec(css);
+  // Tailwind preserves /*! ... */ license comments after the final layer.
+  const match = /@layer utilities \{([\s\S]*)\}\s*(?:\/\*![\s\S]*?\*\/\s*)*$/.exec(css);
   return match?.[1]?.trim() ?? "";
 }
 
diff --git a/package/src/variants.ts b/package/src/variants.ts
index 9f2ea0a..ad05bb2 100644
--- a/package/src/variants.ts
+++ b/package/src/variants.ts
@@ -1,3 +1,8 @@
+/*!
+ * @klinking/squircle — MIT License — Copyright (c) 2026 Chris Klink
+ * https://squircle.klink.ing/ · https://github.com/klink-ing/squircle
+ */
+
 export const DEFAULT_AMT = 2 as const;
 export const DEFAULT_AMOUNT_VAR_NAME = "--squircle-amt" as const;
 export const DEFAULT_R_VAR_NAME = "--squircle-r" as const;
@@ -153,7 +158,10 @@ function toCamel(kebab: string): string {
   return camel;
 }
 
-export type CssLikeObject = Record<string, string | number | null | Record<string, string | number | null>>;
+export type CssLikeObject = Record<
+  string,
+  string | number | null | Record<string, string | number | null>
+>;
 
 export interface SquircleCssObjOptions {
   /** Override the `--squircle-amt` variable name (default `--squircle-amt`). */
diff --git a/package/vite.config.ts b/package/vite.config.ts
index 66aa937..c7a847f 100644
--- a/package/vite.config.ts
+++ b/package/vite.config.ts
@@ -36,13 +36,7 @@ export default defineConfig({
       },
       test: {
         command: "echo 'All tests passed'",
-        dependsOn: [
-          "test:tailwind",
-          "test:css",
-          "test:radius",
-          "test:panda",
-          "test:stylex",
-        ],
+        dependsOn: ["test:tailwind", "test:css", "test:radius", "test:panda", "test:stylex"],
       },
       "generate:stylex": {
         command: "tsx scripts/generate-stylex.ts",
diff --git a/vite.config.ts b/vite.config.ts
index 9342707..4e37da5 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -5,8 +5,7 @@ export default defineConfig({
     cache: true,
     tasks: {
       fmt: {
-        command:
-          'bash -c \'OUT=$(vp fmt --check 2>&1); echo "$OUT"; ! echo "$OUT" | grep -q "Unable to load plugin"\'',
+        command: "vp fmt --check",
         dependsOn: ["@klinking/squircle#build"],
       },
       lint: {
diff --git a/website/astro.config.mjs b/website/astro.config.mjs
index c7ff44d..1d26fb4 100644
--- a/website/astro.config.mjs
+++ b/website/astro.config.mjs
@@ -28,10 +28,7 @@ function stylexForExternalModules() {
     enforce: "pre",
     async transform(code, id) {
       if (!/\.m?jsx?$|\.tsx?$/.test(id)) return null;
-      if (
-        !id.includes("/package/dist/stylex/index.mjs") &&
-        !id.includes(".stylex.")
-      ) {
+      if (!id.includes("/package/dist/stylex/index.mjs") && !id.includes(".stylex.")) {
         return null;
       }
       const result = await babel.transformAsync(code, {
diff --git a/website/examples/stylex/src/App.tsx b/website/examples/stylex/src/App.tsx
index fff9a17..aaec6d6 100644
--- a/website/examples/stylex/src/App.tsx
+++ b/website/examples/stylex/src/App.tsx
@@ -38,9 +38,7 @@ export default function App() {
   return (
     <div className="min-h-screen bg-zinc-950 p-10 text-zinc-100">
       <h1 className="mb-2 text-2xl font-bold">squircle StyleX Demo</h1>
-      <p className="mb-8 text-zinc-400">
-        Squircle utilities authored as StyleX dynamic styles.
-      </p>
+      <p className="mb-8 text-zinc-400">Squircle utilities authored as StyleX dynamic styles.</p>
 
       <div className="space-y-10">
         <section>
@@ -87,9 +85,7 @@ export default function App() {
 
         <section>
           <h2 className="mb-4 text-lg font-semibold text-zinc-300">Squircle amount</h2>
-          <p className="mb-4 text-sm text-zinc-500">
-            Higher = more square. Default is 2.
-          </p>
+          <p className="mb-4 text-sm text-zinc-500">Higher = more square. Default is 2.</p>
           <div className="flex flex-wrap gap-6">
             <Box
               label="squircle.all(radii['3xl'], 1)"