diff --git a/package-lock.json b/package-lock.json
index fe1d7a3..0ae3ac9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -40,7 +40,7 @@
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         "postcss": "^8.4",
         "postcss-calc": "^8",
-        "postcss-custom-properties": "^11",
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         "postcss-import": "^14",
         "postcss-url": "^10",
         "prettier-eslint": "^12",
@@ -400,6 +400,96 @@
         "node": ">=6.9.0"
       }
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+    "node_modules/@csstools/cascade-layer-name-parser": {
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+      "resolved": "https://registry.npmjs.org/@csstools/cascade-layer-name-parser/-/cascade-layer-name-parser-2.0.4.tgz",
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+      "dev": true,
+      "funding": [
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+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
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+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
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+        "@csstools/css-tokenizer": "^3.0.3"
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+    "node_modules/@csstools/css-parser-algorithms": {
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+      "resolved": "https://registry.npmjs.org/@csstools/css-parser-algorithms/-/css-parser-algorithms-3.0.4.tgz",
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+      "dev": true,
+      "funding": [
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+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
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+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
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+    "node_modules/@csstools/css-tokenizer": {
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+      "resolved": "https://registry.npmjs.org/@csstools/css-tokenizer/-/css-tokenizer-3.0.3.tgz",
+      "integrity": "sha512-UJnjoFsmxfKUdNYdWgOB0mWUypuLvAfQPH1+pyvRJs6euowbFkFC6P13w1l8mJyi3vxYMxc9kld5jZEGRQs6bw==",
+      "dev": true,
+      "funding": [
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+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@csstools/utilities": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/@csstools/utilities/-/utilities-2.0.0.tgz",
+      "integrity": "sha512-5VdOr0Z71u+Yp3ozOx8T11N703wIFGVRgOWbOZMKgglPJsWA54MRIoMNVMa7shUToIhx5J8vX4sOZgD2XiihiQ==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT-0",
+      "engines": {
+        "node": ">=18"
+      },
+      "peerDependencies": {
+        "postcss": "^8.4"
+      }
+    },
     "node_modules/@eslint/eslintrc": {
       "version": "0.4.3",
       "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-0.4.3.tgz",
@@ -8825,18 +8915,6 @@
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-      "resolved": "https://registry.npmjs.org/is-url-superb/-/is-url-superb-4.0.0.tgz",
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-      "dev": true,
-      "engines": {
-        "node": ">=10"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
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@@ -11496,18 +11574,33 @@
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-      "resolved": "https://registry.npmjs.org/postcss-custom-properties/-/postcss-custom-properties-11.0.0.tgz",
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+      "version": "14.0.4",
+      "resolved": "https://registry.npmjs.org/postcss-custom-properties/-/postcss-custom-properties-14.0.4.tgz",
+      "integrity": "sha512-QnW8FCCK6q+4ierwjnmXF9Y9KF8q0JkbgVfvQEMa93x1GT8FvOiUevWCN2YLaOWyByeDX8S6VFbZEeWoAoXs2A==",
       "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
       "dependencies": {
-        "postcss-values-parser": "^4.0.0"
+        "@csstools/cascade-layer-name-parser": "^2.0.4",
+        "@csstools/css-parser-algorithms": "^3.0.4",
+        "@csstools/css-tokenizer": "^3.0.3",
+        "@csstools/utilities": "^2.0.0",
+        "postcss-value-parser": "^4.2.0"
       },
       "engines": {
-        "node": ">=10.0.0"
+        "node": ">=18"
       },
       "peerDependencies": {
-        "postcss": "^8.1.0"
+        "postcss": "^8.4"
       }
     },
     "node_modules/postcss-discard-comments": {
@@ -13037,58 +13130,6 @@
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-    "node_modules/postcss-values-parser": {
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-      "resolved": "https://registry.npmjs.org/postcss-values-parser/-/postcss-values-parser-4.0.0.tgz",
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-      "dev": true,
-      "dependencies": {
-        "color-name": "^1.1.4",
-        "is-url-superb": "^4.0.0",
-        "postcss": "^7.0.5"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
-    "node_modules/postcss-values-parser/node_modules/color-name": {
-      "version": "1.1.4",
-      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
-      "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
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-    },
-    "node_modules/postcss-values-parser/node_modules/picocolors": {
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-      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-0.2.1.tgz",
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diff --git a/package.json b/package.json
index 507139a..5ad18e1 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "merge-stream": "^2.0",
     "postcss": "^8.4",
     "postcss-calc": "^8",
-    "postcss-custom-properties": "^11",
+    "postcss-custom-properties": "^14.0.0",
     "postcss-import": "^14",
     "postcss-url": "^10",
     "prettier-eslint": "^12",