diff --git a/.eleventy.js b/.eleventy.js
index ece34f01..83787f0f 100644
--- a/.eleventy.js
+++ b/.eleventy.js
@@ -5,6 +5,7 @@ const markdownIt = require('markdown-it')
 const { parseHTML } = require('linkedom')
 const { isProdEnv } = require('./config/env.js')
 const { mainSections } = require('./config/constants.js')
+const { cssTargets } = require('./config/css.js')
 const initMarkdownLibrary = require('./src/markdown-it.js')
 const demoLinkTransform = require('./src/transforms/demo-link-transform.js')
 const answersLinkTransform = require('./src/transforms/answers-link-transform.js')
@@ -30,9 +31,6 @@ const { parseChangelog, enrichPost } = require('./src/libs/changelog-parser/chan
 // имён, а сам плагин лежит в default.
 const pluginRss = require('@11ty/eleventy-plugin-rss').default
 const eleventyVitePlugin = require('@11ty/eleventy-plugin-vite').default
-const postcssImport = require('postcss-import')
-const postcssMediaMinmax = require('postcss-media-minmax')
-const autoprefixer = require('autoprefixer')
 
 function getAllDocs(collectionAPI) {
   const dokas = collectionAPI.getFilteredByTag('doka')
@@ -420,15 +418,13 @@ module.exports = function (config) {
 
         cacheDir: '.vite',
 
+        // Тот же движок и те же targets, что в прод-сборке (config/css.js),
+        // чтобы стили на дев-сервере и на проде не расходились. Минификация
+        // здесь не включена: на дев-сервере она ни к чему.
         css: {
-          postcss: {
-            // csso здесь не нужен: на дев-сервере минификация не даёт ничего,
-            // зато ломает сборку. Он тянет css-tree 2.2.1, который не знает
-            // @container, @scope, вложенные слои и вложенность — а Vite гонит
-            // через эту цепочку и инлайновые стили демок, поэтому демка с
-            // @container отдавалась с 500. В прод-сборке csso остаётся: там
-            // postcss ходит только по src/styles, демки уезжают копией.
-            plugins: [postcssImport, postcssMediaMinmax, autoprefixer],
+          transformer: 'lightningcss',
+          lightningcss: {
+            targets: cssTargets,
           },
         },
 
diff --git a/AGENTS.md b/AGENTS.md
index 90f0167d..b25b01d6 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -127,7 +127,7 @@ npm run build && npm run lint:html    # валидация разметки, н
 | `.eleventy.js` | Главный конфиг: коллекции, фильтры, трансформации, плагины |
 | `gulpfile.js` | Продакшн-пайплайн: бандл CSS/JS, кеш-хэши |
 | `make-links.js` | Симлинки `src/{раздел}` → `content/{раздел}` |
-| `config/` | Константы, окружение, цвета разделов |
+| `config/` | Константы, окружение, цвета разделов, сборка стилей |
 | `src/data/` | Глобальные данные 11ty |
 | `src/layouts/`, `src/includes/` | Базовый шаблон и блоки |
 | `src/views/` | Страницы: `*.njk` плюс `*.11tydata.js` с данными |
diff --git a/config/__tests__/css.js b/config/__tests__/css.js
new file mode 100644
index 00000000..2ec2ad4e
--- /dev/null
+++ b/config/__tests__/css.js
@@ -0,0 +1,50 @@
+const fs = require('fs')
+const os = require('os')
+const path = require('path')
+
+const { cssTargets, styleEntries, bundleStyle } = require('../css.js')
+
+const bundleSource = (css) => {
+  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'doka-css-'))
+  const filename = path.join(dir, 'index.css')
+  fs.writeFileSync(filename, css)
+
+  try {
+    return bundleStyle(filename).toString()
+  } finally {
+    fs.rmSync(dir, { recursive: true, force: true })
+  }
+}
+
+describe('сборка стилей', () => {
+  it('собирает @import в один файл', () => {
+    const result = bundleStyle(path.join('src/styles', styleEntries[0])).toString()
+
+    expect(result).not.toContain('@import')
+    expect(result.length).toBeGreaterThan(0)
+  })
+
+  // Ради этого и уезжали с csso: его css-tree не знал современного синтаксиса
+  // и ронял всю сборку, а Vite гонит через ту же цепочку стили демок.
+  it.each([
+    ['@container', '@container (width > 400px) { .a { color: red } }'],
+    ['@scope', '@scope (.a) to (.b) { .c { color: red } }'],
+    ['вложенные слои', '@layer framework.base { .a { color: red } }'],
+    ['вложенность', '.a { color: red; &.b { color: blue } }'],
+  ])('не падает на %s', (_, css) => {
+    expect(() => bundleSource(css)).not.toThrow()
+  })
+
+  it('оставляет @container в выдаче', () => {
+    expect(bundleSource('@container (width > 400px) { .a { color: red } }')).toContain('@container')
+  })
+
+  // Префиксы ставит lightningcss по targets, отдельного autoprefixer больше нет.
+  it('ставит вендорные префиксы по targets', () => {
+    expect(bundleSource('.a { user-select: none }')).toContain('-webkit-user-select')
+  })
+
+  it('вычисляет targets из browserslist проекта', () => {
+    expect(Object.keys(cssTargets).length).toBeGreaterThan(0)
+  })
+})
diff --git a/config/css.js b/config/css.js
new file mode 100644
index 00000000..344bfdc8
--- /dev/null
+++ b/config/css.js
@@ -0,0 +1,22 @@
+const browserslist = require('browserslist')
+const { bundle, browserslistToTargets } = require('lightningcss')
+
+const { browserslist: browsers } = require('../package.json')
+
+// Единственный источник правды по браузерам — поле browserslist в package.json.
+// По нему lightningcss решает и какие вендорные префиксы ставить, и какой
+// синтаксис компилировать: раньше первым занимался autoprefixer, вторым —
+// postcss-media-minmax, и каждый жил по своим правилам.
+const cssTargets = browserslistToTargets(browserslist(browsers))
+
+// Точки входа: всё остальное подключается к ним через @import, их же
+// lightningcss и собирает в один файл.
+const styleEntries = ['index.css', 'index.sc.css', 'dark-theme.css']
+
+const bundleStyle = (filename) => bundle({ filename, minify: true, targets: cssTargets }).code
+
+module.exports = {
+  cssTargets,
+  styleEntries,
+  bundleStyle,
+}
diff --git a/gulpfile.js b/gulpfile.js
index f3d7bc5c..6071428b 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -1,15 +1,10 @@
 const path = require('path')
 const fs = require('fs')
-const { rm } = require('node:fs/promises')
+const { mkdir, rm, writeFile } = require('node:fs/promises')
 
 const gulp = require('gulp')
 const git = require('gulp-git')
 const shell = require('gulp-shell')
-const postcss = require('gulp-postcss')
-const csso = require('postcss-csso')
-const pimport = require('postcss-import')
-const minmax = require('postcss-media-minmax')
-const autoprefixer = require('autoprefixer')
 // С версии 0.15 gulp-esbuild экспортирует именованные функции вместо самого
 // себя, а entryPoints и outfile стали обязательными: раньше точка входа
 // бралась из потока gulp. Без них поток молча повисает, и gulp сообщает
@@ -21,6 +16,7 @@ const rev = require('gulp-rev').default
 const revRewrite = require('gulp-rev-rewrite').default
 
 const { contentRepGithub, contentRepFolders } = require(path.join(__dirname, 'config/constants'))
+const { styleEntries, bundleStyle } = require(path.join(__dirname, 'config/css'))
 
 // Раньше здесь был пакет del. С 7-й версии он ESM-only и больше не callable
 // (экспортирует deleteAsync/deleteSync), а обе площадки вызова передавали
@@ -38,20 +34,16 @@ const makeLinks = shell.task(`node make-links.js --default`, {
 
 // Styles
 
-const styles = () => {
-  return gulp
-    .src('src/styles/{index.css,index.sc.css,dark-theme.css}')
-    .pipe(
-      postcss([
-        pimport,
-        minmax,
-        autoprefixer,
-        csso({
-          restructure: false,
-        }),
-      ]),
-    )
-    .pipe(gulp.dest('dist/styles'))
+// lightningcss сам собирает @import, ставит префиксы и минифицирует, поэтому
+// gulp-поток здесь не нужен: точки входа известны, файлы он читает с диска.
+const styles = async () => {
+  await mkdir('dist/styles', { recursive: true })
+
+  await Promise.all(
+    styleEntries.map((entry) =>
+      writeFile(path.join('dist/styles', entry), bundleStyle(path.join('src/styles', entry))),
+    ),
+  )
 }
 
 // Scripts
diff --git a/package-lock.json b/package-lock.json
index 55277e85..9312f207 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,8 +14,8 @@
         "@babel/core": "^7.29.7",
         "@babel/preset-env": "^7.29.0",
         "@eslint/js": "^10.0.1",
-        "autoprefixer": "^10.4.16",
         "babel-jest": "^30.4.1",
+        "browserslist": "^4.28.8",
         "cross-env": "^10.1.0",
         "dotenv": "^17.4.2",
         "editorconfig-checker": "^7.0.0",
@@ -30,7 +30,6 @@
         "gulp": "^5.0.0",
         "gulp-esbuild": "^0.15.0",
         "gulp-git": "^2.4.2",
-        "gulp-postcss": "^10.0.0",
         "gulp-rev": "^12.0.0",
         "gulp-rev-rewrite": "^7.0.0",
         "gulp-shell": "^0.8.0",
@@ -38,14 +37,11 @@
         "htmlnano": "^3.4.0",
         "jest": "^30.4.2",
         "jest-environment-jsdom": "^30.4.1",
+        "lightningcss": "^1.33.0",
         "linkedom": "^0.18.13",
         "markdown-it": "^15.0.1",
         "nano-staged": "^1.0.2",
         "node-w3c-validator": "^3.0.0",
-        "postcss": "^8.4.32",
-        "postcss-csso": "^6.0.1",
-        "postcss-import": "^17.0.0",
-        "postcss-media-minmax": "^5.0.0",
         "prettier": "^3.1.1",
         "prismjs": "^1.29.0",
         "simple-git-hooks": "^2.9.0",
@@ -6910,43 +6906,6 @@
         "node": ">= 10.13.0"
       }
     },
-    "node_modules/autoprefixer": {
-      "version": "10.5.4",
-      "resolved": "https://registry.npmjs.org/autoprefixer/-/autoprefixer-10.5.4.tgz",
-      "integrity": "sha512-MaU0U/za7N3r6brxD4YB/l4NSrFzLPlANv6wEuQVaIPlD3L4W9rFcQPbL/EilY9BHhHvhfcz3gInDLrEtWT4EA==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "opencollective",
-          "url": "https://opencollective.com/postcss/"
-        },
-        {
-          "type": "tidelift",
-          "url": "https://tidelift.com/funding/github/npm/autoprefixer"
-        },
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/ai"
-        }
-      ],
-      "license": "MIT",
-      "dependencies": {
-        "browserslist": "^4.28.6",
-        "caniuse-lite": "^1.0.30001806",
-        "fraction.js": "^5.3.4",
-        "picocolors": "^1.1.1",
-        "postcss-value-parser": "^4.2.0"
-      },
-      "bin": {
-        "autoprefixer": "bin/autoprefixer"
-      },
-      "engines": {
-        "node": "^10 || ^12 || >=14"
-      },
-      "peerDependencies": {
-        "postcss": "^8.1.0"
-      }
-    },
     "node_modules/b4a": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/b4a/-/b4a-1.8.1.tgz",
@@ -8109,42 +8068,6 @@
         "node": ">=4"
       }
     },
-    "node_modules/csso": {
-      "version": "5.0.5",
-      "resolved": "https://registry.npmjs.org/csso/-/csso-5.0.5.tgz",
-      "integrity": "sha512-0LrrStPOdJj+SPCCrGhzryycLjwcgUSHBtxNA8aIDxf0GLsRh1cKYhB00Gd1lDOS4yGH69+SNn13+TWbVHETFQ==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "css-tree": "~2.2.0"
-      },
-      "engines": {
-        "node": "^10 || ^12.20.0 || ^14.13.0 || >=15.0.0",
-        "npm": ">=7.0.0"
-      }
-    },
-    "node_modules/csso/node_modules/css-tree": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.2.1.tgz",
-      "integrity": "sha512-OA0mILzGc1kCOCSJerOeqDxDQ4HOh+G8NbOJFOTgOCzpw7fCBubk0fEyxp8AgOL/jvLgYA/uV0cMbe43ElF1JA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "mdn-data": "2.0.28",
-        "source-map-js": "^1.0.1"
-      },
-      "engines": {
-        "node": "^10 || ^12.20.0 || ^14.13.0 || >=15.0.0",
-        "npm": ">=7.0.0"
-      }
-    },
-    "node_modules/csso/node_modules/mdn-data": {
-      "version": "2.0.28",
-      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.28.tgz",
-      "integrity": "sha512-aylIc7Z9y4yzHYAJNuESG3hfhC+0Ibp/MAMiaOZgNv4pmEdFyfZhhhny4MNiAfWdBQ1RQ2mfDWmM1x8SvGyp8g==",
-      "dev": true,
-      "license": "CC0-1.0"
-    },
     "node_modules/cssom": {
       "version": "0.5.0",
       "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.5.0.tgz",
@@ -9636,20 +9559,6 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
-    "node_modules/fraction.js": {
-      "version": "5.3.4",
-      "resolved": "https://registry.npmjs.org/fraction.js/-/fraction.js-5.3.4.tgz",
-      "integrity": "sha512-1X1NTtiJphryn/uLQz3whtY6jK3fTqoE3ohKs0tT+Ujr1W59oopxmoEh7Lu5p6vBaPbgoM0bzveAW4Qi5RyWDQ==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": "*"
-      },
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/rawify"
-      }
-    },
     "node_modules/fresh": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/fresh/-/fresh-2.0.0.tgz",
@@ -10188,38 +10097,6 @@
         "url": "https://github.com/chalk/chalk?sponsor=1"
       }
     },
-    "node_modules/gulp-postcss": {
-      "version": "10.0.0",
-      "resolved": "https://registry.npmjs.org/gulp-postcss/-/gulp-postcss-10.0.0.tgz",
-      "integrity": "sha512-z1RF2RJEX/BvFsKN11PXai8lRmihZTiHnlJf7Zu8uHaA/Q7Om4IeN8z1NtMAW5OiLwUY02H0DIFl9tHl0CNSgA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "fancy-log": "^2.0.0",
-        "plugin-error": "^2.0.1",
-        "postcss-load-config": "^5.0.0",
-        "vinyl-sourcemaps-apply": "^0.2.1"
-      },
-      "engines": {
-        "node": ">=18"
-      },
-      "peerDependencies": {
-        "postcss": "^8.0.0"
-      }
-    },
-    "node_modules/gulp-postcss/node_modules/fancy-log": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/fancy-log/-/fancy-log-2.0.0.tgz",
-      "integrity": "sha512-9CzxZbACXMUXW13tS0tI8XsGGmxWzO2DmYrGuBJOJ8k8q2K7hwfJA5qHjuPPe8wtsco33YR9wc+Rlr5wYFvhSA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "color-support": "^1.1.3"
-      },
-      "engines": {
-        "node": ">=10.13.0"
-      }
-    },
     "node_modules/gulp-rev": {
       "version": "12.0.0",
       "resolved": "https://registry.npmjs.org/gulp-rev/-/gulp-rev-12.0.0.tgz",
@@ -12715,19 +12592,6 @@
         "url": "https://opencollective.com/parcel"
       }
     },
-    "node_modules/lilconfig": {
-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/lilconfig/-/lilconfig-3.1.3.tgz",
-      "integrity": "sha512-/vlFKAoH5Cgt3Ie+JLhRbwOsCQePABiU3tJ1egGvyQ+33R/vcwM2Zl2QR/LzjsBeItPt3oSVXapn+m4nQDvpzw==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=14"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/antonk52"
-      }
-    },
     "node_modules/lines-and-columns": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/lines-and-columns/-/lines-and-columns-1.2.4.tgz",
@@ -13929,94 +13793,6 @@
         "node": "^10 || ^12 || >=14"
       }
     },
-    "node_modules/postcss-csso": {
-      "version": "6.0.1",
-      "resolved": "https://registry.npmjs.org/postcss-csso/-/postcss-csso-6.0.1.tgz",
-      "integrity": "sha512-ZV4yEziMrx6CEiqabGLrDva0pMD7Fbw7yP+LzJvaynM4OJgTssGN6dHiMsJMJdpmNaLJltXVLsrb/5sxbFa8sA==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "csso": "^5.0.5"
-      },
-      "engines": {
-        "node": "^12.20.0 || ^14.13.0 || >=15.0.0",
-        "npm": ">=7.0.0"
-      },
-      "peerDependencies": {
-        "postcss": "^8.0.0"
-      }
-    },
-    "node_modules/postcss-import": {
-      "version": "17.0.0",
-      "resolved": "https://registry.npmjs.org/postcss-import/-/postcss-import-17.0.0.tgz",
-      "integrity": "sha512-qzVMJhcq39KweT7Fp0HcjE5YxL5yI854Q3CtufxDuZKO9HLQUp2rptB9+U0MIj3pT1ZEVXoqnpeC1mSkfYuz4Q==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "postcss-value-parser": "^4.0.0",
-        "read-cache": "^1.0.0",
-        "resolve": "^1.1.7"
-      },
-      "engines": {
-        "node": ">=22.0.0"
-      },
-      "peerDependencies": {
-        "postcss": "^8.0.0"
-      }
-    },
-    "node_modules/postcss-load-config": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/postcss-load-config/-/postcss-load-config-5.1.0.tgz",
-      "integrity": "sha512-G5AJ+IX0aD0dygOE0yFZQ/huFFMSNneyfp0e3/bT05a8OfPC5FUoZRPfGijUdGOJNMewJiwzcHJXFafFzeKFVA==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "opencollective",
-          "url": "https://opencollective.com/postcss/"
-        },
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/ai"
-        }
-      ],
-      "license": "MIT",
-      "dependencies": {
-        "lilconfig": "^3.1.1",
-        "yaml": "^2.4.2"
-      },
-      "engines": {
-        "node": ">= 18"
-      },
-      "peerDependencies": {
-        "jiti": ">=1.21.0",
-        "postcss": ">=8.0.9",
-        "tsx": "^4.8.1"
-      },
-      "peerDependenciesMeta": {
-        "jiti": {
-          "optional": true
-        },
-        "postcss": {
-          "optional": true
-        },
-        "tsx": {
-          "optional": true
-        }
-      }
-    },
-    "node_modules/postcss-media-minmax": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/postcss-media-minmax/-/postcss-media-minmax-5.0.0.tgz",
-      "integrity": "sha512-yDUvFf9QdFZTuCUg0g0uNSHVlJ5X1lSzDZjPSFaiCWvjgsvu8vEVxtahPrLMinIDEEGnx6cBe6iqdx5YWz08wQ==",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=10.0.0"
-      },
-      "peerDependencies": {
-        "postcss": "^8.1.0"
-      }
-    },
     "node_modules/postcss-safe-parser": {
       "version": "7.0.1",
       "resolved": "https://registry.npmjs.org/postcss-safe-parser/-/postcss-safe-parser-7.0.1.tgz",
@@ -14407,13 +14183,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/read-cache": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/read-cache/-/read-cache-1.0.2.tgz",
-      "integrity": "sha512-/peqiBB/n07gQGLsWaHho3WfvUyRscw0gYTsEFMhrIe/nWLkYaf5SbKYjGYqtRV3aPwykJgF2VEMo1ac4bnsGA==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/readable-stream": {
       "version": "3.6.2",
       "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.2.tgz",
@@ -16610,26 +16379,6 @@
         "node": ">=10.13.0"
       }
     },
-    "node_modules/vinyl-sourcemaps-apply": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/vinyl-sourcemaps-apply/-/vinyl-sourcemaps-apply-0.2.1.tgz",
-      "integrity": "sha512-+oDh3KYZBoZC8hfocrbrxbLUeaYtQK7J5WU5Br9VqWqmCll3tFJqKp97GC9GmMsVIL0qnx2DgEDVxdo5EZ5sSw==",
-      "dev": true,
-      "license": "ISC",
-      "dependencies": {
-        "source-map": "^0.5.1"
-      }
-    },
-    "node_modules/vinyl-sourcemaps-apply/node_modules/source-map": {
-      "version": "0.5.7",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.7.tgz",
-      "integrity": "sha512-LbrmJOMUSdEVxIKvdcJzQC+nQhe8FUZQTXQy6+I75skNgn3OoQ0DZA8YnFa7gp8tqtL3KPf1kmo0R5DoApeSGQ==",
-      "dev": true,
-      "license": "BSD-3-Clause",
-      "engines": {
-        "node": ">=0.10.0"
-      }
-    },
     "node_modules/vite": {
       "version": "8.2.2",
       "resolved": "https://registry.npmjs.org/vite/-/vite-8.2.2.tgz",
@@ -16990,22 +16739,6 @@
       "dev": true,
       "license": "ISC"
     },
-    "node_modules/yaml": {
-      "version": "2.9.0",
-      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.9.0.tgz",
-      "integrity": "sha512-2AvhNX3mb8zd6Zy7INTtSpl1F15HW6Wnqj0srWlkKLcpYl/gMIMJiyuGq2KeI2YFxUPjdlB+3Lc10seMLtL4cA==",
-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "yaml": "bin.mjs"
-      },
-      "engines": {
-        "node": ">= 14.6"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/eemeli"
-      }
-    },
     "node_modules/yargs": {
       "version": "16.2.2",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-16.2.2.tgz",
diff --git a/package.json b/package.json
index e32d102f..d3114d6c 100644
--- a/package.json
+++ b/package.json
@@ -15,9 +15,9 @@
     }
   },
   "browserslist": [
-    "last 2 version",
-    "not dead",
-    "not ie <= 11"
+    "defaults",
+    "safari >= 16.4",
+    "ios_saf >= 16.4"
   ],
   "nodeW3Cvalidator": {
     "suppressErrors": [
@@ -59,8 +59,8 @@
     "@babel/core": "^7.29.7",
     "@babel/preset-env": "^7.29.0",
     "@eslint/js": "^10.0.1",
-    "autoprefixer": "^10.4.16",
     "babel-jest": "^30.4.1",
+    "browserslist": "^4.28.8",
     "cross-env": "^10.1.0",
     "dotenv": "^17.4.2",
     "editorconfig-checker": "^7.0.0",
@@ -75,7 +75,6 @@
     "gulp": "^5.0.0",
     "gulp-esbuild": "^0.15.0",
     "gulp-git": "^2.4.2",
-    "gulp-postcss": "^10.0.0",
     "gulp-rev": "^12.0.0",
     "gulp-rev-rewrite": "^7.0.0",
     "gulp-shell": "^0.8.0",
@@ -83,14 +82,11 @@
     "htmlnano": "^3.4.0",
     "jest": "^30.4.2",
     "jest-environment-jsdom": "^30.4.1",
+    "lightningcss": "^1.33.0",
     "linkedom": "^0.18.13",
     "markdown-it": "^15.0.1",
     "nano-staged": "^1.0.2",
     "node-w3c-validator": "^3.0.0",
-    "postcss": "^8.4.32",
-    "postcss-csso": "^6.0.1",
-    "postcss-import": "^17.0.0",
-    "postcss-media-minmax": "^5.0.0",
     "prettier": "^3.1.1",
     "prismjs": "^1.29.0",
     "simple-git-hooks": "^2.9.0",