docs(readme): add deprecation notice

Bumps [postcss-preset-env](https://github.com/csstools/postcss-plugins/tree/HEAD/plugin-packs/postcss-preset-env) from 8.4.2 to 8.5.0.
- [Changelog](https://github.com/csstools/postcss-plugins/blob/main/plugin-packs/postcss-preset-env/CHANGELOG.md)
- [Commits](https://github.com/csstools/postcss-plugins/commits/HEAD/plugin-packs/postcss-preset-env)

---
updated-dependencies:
- dependency-name: postcss-preset-env
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.browserslistrc

@@ -1,4 +1,4 @@
 # Browserslist <https://browsersl.ist>
 
 defaults
-since 2012
+supports css-variables

.editorconfig

@@ -1,3 +1,5 @@
+# EditorConfig <http://editorconfig.org>
+
 root = true
 
 [*]

.github/workflows/ci.yml

@@ -0,0 +1,71 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - src/**.scss
+      - package.json
+      - Gruntfile.coffee
+      - .stylelintrc
+      - .stylelintignore
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  # Test Lint
+  lint:
+    # Use Ubuntu 22.04 LTS
+    runs-on: ubuntu-22.04
+    steps:
+      # Step I
+      - name: Get Source Code
+        uses: actions/checkout@v3
+      # Step II
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: lts/*
+          registry-url: https://registry.npmjs.com
+      # Step III
+      - name: Install Dependencies
+        run: npm ci
+      # Step IV
+      - name: Test Lint
+        run: npm run lint
+  # Test Build
+  build:
+    # Use Ubuntu Linux, Windows and OS X
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        node-version: [16, 18, latest]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+      fail-fast: false
+    steps:
+      # Step I
+      - name: Get Source Code
+        uses: actions/checkout@v3
+      # Step II
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          registry-url: https://registry.npmjs.com
+      # Step III
+      - name: Install Dependencies
+        run: npm ci
+      # Step IV
+      - name: Test Build
+        run: npm run build
+      # Step V
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: built-on__os_${{ matrix.os }}__nodejs_${{ matrix.node-version }}
+          path: dist/
+          retention-days: 3
+
+# Authored by @kuohuanhuan.

.github/workflows/release.yaml

@@ -1,34 +0,0 @@
-name: Build and Release
-
-on:
-  push:
-    tags:
-      - 'v*'
-
-jobs:
-  # NPM Registry Release
-  release:
-    # Use Ubuntu 22.04
-    runs-on: ubuntu-22.04
-    steps:
-      # Step I
-      - name: Get Source Code
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-      # Step II
-      - name: Install Dependencies
-        run: npm ci
-      # Step III
-      - name: Build Project
-        run: npm run build
-      # Step IV
-      - name: Publish to NPM Registry
-        uses: JS-DevTools/npm-publish@v1
-        with:
-          token: ${{ secrets.NPM_TOKEN }}
-      # Step V
-      - name: Generate Changelog
-        run: npx changelogithub@0.12
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release.yml

@@ -0,0 +1,68 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - v*
+
+jobs:
+  # NPM Registry & GitHub Release
+  release:
+    # Use Windows Server 2022
+    runs-on: windows-2022
+    steps:
+      # Step I
+      - name: Get Source Code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      # Step II
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: lts/*
+          registry-url: https://registry.npmjs.com
+      # Step III
+      - name: Install Dependencies
+        run: npm ci
+      # Step IV
+      - name: Build Project
+        run: npm run build
+      # Step V
+      - name: Create tar.gz File
+        uses: TheDoctor0/zip-release@0.7.1
+        with:
+          type: tar
+          path: dist/
+          filename: build.tar.gz
+      # Step VI
+      - name: Publish to NPM Registry
+        uses: rxfork/npm-publish@v1
+        with:
+          token: ${{ secrets.NPM_TOKEN }}
+      # Step VII
+      - name: Generate Changelog
+        run: npx changelogithub@0.12
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      # Step VIII
+      # / pre-release
+      - name: GitHub Release (pre-release)
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') && contains(github.ref, '-')
+        uses: softprops/action-gh-release@v1
+        with:
+          prerelease: true
+          files: |
+            dist/*
+            build.tar.gz
+      # / release
+      - name: GitHub Release (release)
+        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') && contains(github.ref, '-') == false
+        uses: softprops/action-gh-release@v1
+        with:
+          prerelease: false
+          files: |
+            dist/*
+            build.tar.gz
+
+# Authored by @kuohuanhuan.

.gitignore

@@ -1,2 +1,2 @@
-.env.local
 node_modules/
+dist/

.npmignore

@@ -0,0 +1,4 @@
+build.tar.gz
+node_modules/
+.github/
+.vscode/

.stylelintignore

@@ -0,0 +1,2 @@
+dist/*.css
+node_modules/

.stylelintrc

@@ -0,0 +1,4 @@
+{
+  "ignoreDisables": true,
+  "extends": "@kuohuanhuan/stylelint-config"
+}

.vscode/extensions.json

@@ -0,0 +1,7 @@
+{
+  "recommendations": [
+    "editorconfig.editorconfig",
+    "stylelint.vscode-stylelint",
+    "ecmel.vscode-html-css"
+  ]
+}

.vscode/settings.json

@@ -1,3 +1,6 @@
 {
-  "cSpell.enabled": false
+  "cSpell.enabled": false,
+  "stylelint.enable": true,
+  "stylelint.configFile": ".stylelintrc",
+  "workbench.colorCustomizations": {}
 }

CONTRIBUTING.md

@@ -0,0 +1,26 @@
+# Contributing
+
+This document describes contribution guidelines for `x-markdown-css`.
+
+## Coding Style
+
+The project `x-markdown-css` uses [Stylelint](https://stylelint.io) to manage the SCSS coding style in a holistic way. In the meantime, please:
+
+- **DO** give priority to the current style of the project or file you're changing even if it diverges from the general guidelines or your preferences.
+- **DO NOT** send PRs for style changes. For example, do not send PRs that are focused on changing `.stylelintrc` rules.
+- **DO NOT** send PRs for upgrading code to use newer language features, though it's ok to use newer language features as part of new code that's written.
+- **DO NOT** send PRs for linting existing code.
+
+## Pull Requests
+
+- **DO** submit all code changes via pull requests (PRs) rather than through a direct commit. PRs will be reviewed and potentially merged by the repo maintainers after a peer review that includes at least one maintainer.
+- **DO** give PRs short-but-descriptive names (e.g. "Fix layout drift (solve #123)", not just "Solve issue #123")
+- **DO** refer to any relevant issues, and include [keywords](https://help.github.com/articles/closing-issues-via-commit-messages) that automatically close issues when the PR is merged.
+- **DO** tag any users that should know about and/or review the change.
+- **DO** ensure each commit successfully builds and passes Stylelint. The entire PR must pass all tests in the Continuous Integration (CI) system before it'll be merged.
+- **DO** address PR feedback in an additional commit(s) rather than amending the existing commits, and only rebase/squash them when necessary.  This makes it easier for reviewers to track changes.
+- **BE CAREFUL OF** submitting "work in progress" PRs. Generally, a PR should only be submitted when it is considered ready for review and subsequent merging by the contributor.
+- **DO NOT** send PRs only for changing build environments (begins with `chore:`), although the tool(s) might be outdated.
+- **DO NOT** fix merge conflicts using a merge commit. Prefer `git rebase`.
+- **DO NOT** mix independent, unrelated changes in one PR. Separate real product/test code changes from larger code formatting/dead code removal changes. Separate unrelated fixes into separate PRs, especially if they are in different partials.
+- *The last one and also the most important*: **DO NOT** destroy the existing codebase.

Gruntfile.coffee

@@ -1,7 +1,8 @@
 module.exports = (grunt) ->
-  require('load-grunt-tasks')(grunt)
-
-  grunt.initConfig(
+  # Load Grunt Tasks
+  require('load-grunt-tasks') grunt
+  # Project Configuration
+  grunt.initConfig
     # NPM Package Declare
     pkg: grunt.file.readJSON('package.json')
     # Sass Compile
@@ -26,19 +27,31 @@ module.exports = (grunt) ->
           annotation: 'dist/'
       exp:
         options:
-          processors: [require('autoprefixer')()]
+          processors: [
+            require('postcss-preset-env')(
+              features:
+                'custom-properties': false
+            )
+            require('autoprefixer')()
+          ]
         src: 'dist/bundle.css'
         dest: 'dist/bundle.css'
       min:
         options:
           processors: [
-            require('autoprefixer')()
-            require('cssnano')(
-              preset: 'default'
+            require('postcss-preset-env')(
+              features:
+                'custom-properties': false
             )
+            require('autoprefixer')()
+            require('cssnano')(preset: 'default')
           ]
         src: 'dist/bundle.min.css'
         dest: 'dist/bundle.min.css'
-  )
+  # Register Grunt Tasks
+  grunt.registerTask 'build', [
+    'sass'
+    'postcss'
+  ]
 
-  grunt.registerTask('build', ['sass', 'postcss'])
+# Authored by @kuohuanhuan.

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 kuohuanhuan and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,74 @@
+<h1 align="center">x-markdown-css</h1>
+
+> [!IMPORTANT]  
+> I am working on a new CSS styling library, so `x-markdown-css` is deprecated.  
+> PS. Sass dev team supports Palestine Hamas. **I am dropping it.**
+
+<center>
+
+[![NPM Version](https://img.shields.io/npm/v/x-markdown-css)](https://www.npmjs.com/package/x-markdown-css)
+[![GitHub Actions](https://img.shields.io/github/actions/workflow/status/kuohuanhuan/x-markdown-css/ci.yml)](https://github.com/kuohuanhuan/x-markdown-css/actions/workflows/ci.yml)
+[![MIT License](https://img.shields.io/github/license/kuohuanhuan/x-markdown-css?color=blue)](https://github.com/kuohuanhuan/x-markdown-css/blob/master/LICENSE)
+
+</center>
+
+> A simple and customizable markdown CSS stylesheet for everyone.
+
+## Browsers Support
+
+According to [.browserslistrc](https://github.com/kuohuanhuan/x-markdown-css/blob/master/.browserslistrc), `x-markdown-css` supports **all browsers support CSS variables.**
+
+## Get Started
+
+Visit the [Wiki](https://github.com/kuohuanhuan/x-markdown-css/wiki) page for more information.
+
+## Built with
+
+The following tools and suite libraries made the development of `x-markdown-css` possible:
+
+- [SCSS](https://sass-lang.com)
+- [Stylelint](https://stylelint.io)
+- [Grunt](https://gruntjs.com)
+- [PostCSS](https://postcss.org)
+- [cssnano](https://cssnano.co)
+
+*...and much more.*
+
+## Development
+
+### Requirement
+
+- Node.js >= 16
+
+### Install
+
+```sh
+npm i
+```
+
+### Build
+
+```sh
+npm run build
+```
+
+or
+
+```sh
+grunt build
+```
+
+or
+
+```sh
+npx grunt build
+```
+
+## Contributing
+
+PRs, issues and feature requests are welcome!  
+Feel free to check [Issues](https://github.com/kuohuanhuan/x-markdown-css/issues) page. You can also take a look at the [Contributing Guide](https://github.com/kuohuanhuan/x-markdown-css/blob/master/CONTRIBUTING.md).
+
+## License
+
+Copyright (c) 2023 [kuohuanhuan](https://github.com/kuohuanhuan), licensed under [MIT](https://github.com/kuohuanhuan/x-markdown-css/blob/master/LICENSE).

package.json

@@ -1,7 +1,7 @@
 {
   "name": "x-markdown-css",
-  "version": "0.0.0-20230228.5",
-  "description": "A simple and customizable Markdown CSS for everyone.",
+  "version": "0.1.6",
+  "description": "A simple and customizable markdown CSS stylesheet for everyone.",
   "keywords": [
     "markdown",
     "css",
@@ -16,34 +16,47 @@
     "article",
     "documentation"
   ],
-  "main": "index.js",
+  "main": "dist/bundle.min.css",
+  "style": "dist/bundle.min.css",
+  "sass": "src/index.scss",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/kuohuanhuan/x-markdown-css.git"
   },
-  "author": "kuohuanhuan",
+  "author": {
+    "name": "kuohuanhuan",
+    "email": "hi@nekohuan.cyou",
+    "url": "https://nekohuan.cyou"
+  },
   "license": "MIT",
   "bugs": {
     "url": "https://github.com/kuohuanhuan/x-markdown-css/issues"
   },
   "homepage": "https://github.com/kuohuanhuan/x-markdown-css#readme",
   "engines": {
-    "node": ">=14"
+    "node": ">=16"
   },
   "scripts": {
-    "build": "grunt build"
+    "build": "grunt build",
+    "bump": "bumpp",
+    "lint": "stylelint **/*.scss --config .stylelintrc",
+    "lint:fix": "stylelint **/*.scss --config .stylelintrc --fix"
   },
   "dependencies": {
+    "coffeescript": "^2.7.0",
     "sass": "^1.58.3"
   },
   "devDependencies": {
+    "@kuohuanhuan/stylelint-config": "^0.0.5",
     "@lodder/grunt-postcss": "^3.1.1",
     "autoprefixer": "^10.4.13",
-    "coffeescript": "^2.7.0",
-    "cssnano": "^5.1.15",
+    "bumpp": "^9.0.0",
+    "cssnano": "^6.0.0",
     "grunt": "^1.6.1",
     "grunt-sass": "^3.1.0",
     "load-grunt-tasks": "^5.1.0",
-    "postcss": "^8.4.21"
+    "postcss": "^8.4.21",
+    "postcss-preset-env": "^8.0.1",
+    "stylelint": "^15.2.0"
   }
 }

src/_content.scss

@@ -0,0 +1,7 @@
+@use 'sass:meta';
+@use 'partials/container';
+
+.markdown-body {
+  @include container.container;
+  @include meta.load-css('partials/all');
+}

src/_vars.scss

@@ -0,0 +1,22 @@
+@use 'sass:meta';
+@use 'variables/constants';
+@use 'variables/modes/light';
+@use 'variables/modes/dark';
+
+:root {
+  @each $name, $val in meta.module-variables('constants') {
+    --xm-#{$name}: #{$val};
+  }
+}
+
+.markdown-body {
+  @each $name, $val in meta.module-variables('light') {
+    --xm-c-#{$name}: #{$val};
+  }
+}
+
+.dark .markdown-body {
+  @each $name, $val in meta.module-variables('dark') {
+    --xm-c-#{$name}: #{$val};
+  }
+}

src/index.scss

@@ -1,4 +1,2 @@
-@use 'scss/vars' as *;
-
-@import 'scss/markdown';
-@import 'scss/prose';
+@use 'vars';
+@use 'content';

src/partials/_all.scss

@@ -0,0 +1,9 @@
+@forward 'title';
+@forward 'text';
+@forward 'link';
+@forward 'code';
+@forward 'quote';
+@forward 'figure';
+@forward 'list';
+@forward 'table';
+@forward 'media';

src/partials/_container.scss

@@ -0,0 +1,10 @@
+@mixin container {
+  max-width: fit-content;
+  color: var(--xm-c-regular);
+  font-size: 1rem;
+  font-family: var(--xm-font-display) !important;
+  line-height: 1.75;
+  &:first-child {
+    margin-top: 1rem;
+  }
+}

src/partials/code.scss

@@ -0,0 +1,42 @@
+code {
+  color: var(--xm-c-deep);
+  font-weight: 600;
+  font-size: .875rem;
+  font-family: var(--xm-font-code);
+  &::before,
+  &::after {
+    content: '`';
+  }
+}
+
+pre {
+  overflow-x: auto;
+  margin-top: 1.75rem;
+  margin-bottom: 1.75rem;
+  padding-top: .875rem, 1.15rem;
+  border-radius: .375rem;
+  color: var(--xm-c-deep);
+  font-size: .875rem;
+  line-height: 1.75;
+  code {
+    padding: 0;
+    border-width: 0;
+    border-radius: 0;
+    background: transparent;
+    color: inherit;
+    font-weight: 400;
+    font-size: inherit;
+    font-family: inherit;
+    line-height: inherit;
+    &::before,
+    &::after {
+      content: none;
+    }
+  }
+  &:has(code) {
+    margin: .5rem 0;
+    font-size: 1.05rem;
+    font-family: var(--xm-font-code);
+    line-height: 1.4;
+  }
+}

src/partials/figure.scss

@@ -0,0 +1,14 @@
+figure {
+  margin-top: 2rem;
+  margin-bottom: 2rem;
+  figcaption {
+    margin-top: .875rem;
+    color: var(--xm-c-shallow);
+    font-size: .875rem;
+    line-height: 1.45;
+  }
+  > * {
+    margin-top: 0;
+    margin-bottom: 0;
+  }
+}

src/partials/link.scss

@@ -0,0 +1,19 @@
+a {
+  border-bottom: 1px solid var(--xm-c-border);
+  color: var(--xm-c-deeper);
+  font-weight: 500;
+  text-decoration: none;
+  transition: border .3s ease-in-out;
+  code {
+    color: var(--xm-c-deep);
+  }
+  &:hover {
+    border-bottom: 1px solid var(--xm-c-regular);
+  }
+  &:not([href]) {
+    border-bottom: none;
+    color: inherit;
+    font-weight: normal;
+    transition: none;
+  }
+}

src/partials/list.scss

@@ -0,0 +1,49 @@
+li {
+  margin-top: .5rem;
+  margin-bottom: .5rem;
+}
+
+ol {
+  margin-top: 1.25rem;
+  margin-bottom: 1.25rem;
+  list-style-type: none;
+  > li {
+    position: relative;
+    padding-left: 1.75rem;
+    &::before {
+      content: counter(list-item, decimal) '.';
+      position: absolute;
+      left: 0;
+      color: var(--xm-c-shallow);
+      font-weight: 400;
+    }
+  }
+}
+
+ul {
+  margin-top: 1.25rem;
+  margin-bottom: 1.25rem;
+  list-style-type: none;
+  > li {
+    position: relative;
+    padding-left: 1.75rem;
+    &::before {
+      content: '';
+      position: absolute;
+      top: .675rem;
+      left: .25rem;
+      width: .375rem;
+      height: .375rem;
+      border-radius: 50%;
+      background-color: var(--xm-c-shallower);
+    }
+  }
+}
+
+ul ul,
+ul ol,
+ol ul,
+ol ol {
+  margin-top: .75rem;
+  margin-bottom: .75rem;
+}

src/partials/media.scss

@@ -0,0 +1,17 @@
+img {
+  display: block;
+  max-width: 92%;
+  margin: 1rem auto;
+  border-radius: .2rem;
+}
+
+video {
+  margin: auto;
+}
+
+iframe {
+  display: flex;
+  width: 92%;
+  margin: auto;
+  border-radius: .2rem;
+}

src/partials/quote.scss

@@ -0,0 +1,29 @@
+blockquote,
+q {
+  margin-top: 1.65rem;
+  margin-bottom: 1.65rem;
+  padding: .6rem 1.2rem;
+  border-left: .25rem solid var(--xm-c-border);
+  color: inherit;
+  font-weight: 500;
+  font-style: italic;
+  line-height: 1.5rem;
+  quotes: '\201C''\201D''\2018''\2019';
+  opacity: .75;
+  p {
+    &:first-of-type::before {
+      content: open-quote;
+    }
+    &:last-of-type::after {
+      content: close-quote;
+    }
+  }
+  > * {
+    &:first-child {
+      margin-top: 0;
+    }
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+}

src/partials/table.scss

@@ -0,0 +1,19 @@
+table {
+  overflow: auto;
+  width: 100%;
+  border-spacing: 0;
+  border-collapse: collapse;
+  th,
+  td {
+    padding: 6px 13px;
+    border: 1.5px solid var(--xm-c-border-table);
+  }
+  thead th {
+    font-weight: 700;
+  }
+  tbody tr {
+    &:hover {
+      background-color: var(--xm-c-shallowest);
+    }
+  }
+}

src/partials/text.scss

@@ -0,0 +1,17 @@
+p {
+  margin-top: 1.25rem;
+  margin-bottom: 1.25rem;
+}
+
+strong {
+  color: var(--xm-c-deep);
+  font-weight: 600;
+}
+
+b {
+  color: var(--xm-c-deep);
+}
+
+em {
+  color: inherit;
+}

src/partials/title.scss

@@ -0,0 +1,97 @@
+h1 {
+  margin-top: 0;
+  margin-bottom: .875rem;
+  color: var(--xm-c-deeper);
+  font-weight: 800;
+  font-size: 2.25rem;
+  line-height: 1.15;
+}
+
+h2 {
+  margin-top: 2rem;
+  margin-bottom: 1rem;
+  color: var(--xm-c-deep);
+  font-weight: 700;
+  font-size: 1.5rem;
+  line-height: 1.35;
+  code {
+    font-size: .875rem;
+  }
+  + * {
+    margin-top: 0;
+  }
+}
+
+h3 {
+  margin-top: 1.6rem;
+  margin-bottom: .6rem;
+  color: inherit;
+  font-weight: 600;
+  font-size: 1.25rem;
+  line-height: 1.6;
+  opacity: .7;
+  code {
+    font-size: .9rem;
+  }
+  + * {
+    margin-top: 0;
+  }
+}
+
+h4 {
+  margin-top: 1.5rem;
+  margin-bottom: .5rem;
+  color: inherit;
+  font-weight: 600;
+  line-height: 1.5;
+  + * {
+    margin-top: 0;
+  }
+}
+
+h5,
+h6 {
+  margin-top: 20px;
+  margin-bottom: 10px;
+  font-weight: 500;
+  letter-spacing: 2px;
+  text-transform: uppercase;
+  opacity: .5;
+}
+
+hr {
+  width: 50px;
+  margin-top: 2rem;
+  margin-bottom: 2rem;
+  border-color: var(--xm-c-hr-border);
+  + * {
+    margin-top: 0;
+  }
+}
+
+.header-anchor {
+  float: left;
+  margin-top: 0;
+  margin-left: -1.25rem;
+  padding-right: .5rem;
+  border: 0 !important;
+  font-weight: 600;
+  font-size: inherit;
+  text-decoration: none;
+  opacity: 0;
+  &:hover,
+  &:focus {
+    text-decoration: none;
+  }
+}
+
+@for $i from 1 through 6 {
+  h#{$i} {
+    &:hover,
+    &:focus {
+      .header-anchor {
+        opacity: .35 + $i * .025;
+      }
+    }
+  }
+}

src/scss/_vars/colors.scss

@@ -1,13 +0,0 @@
-$shiki-light: #f8f8f8;
-$shiki-dark: #0e0e0e;
-$link-border: hsla(0, 0%, 50%, .3);
-$code: #111827;
-$ol-counter: #6b7280;
-$ul-counter: #d1d5db;
-$hr-border: hsla(0, 0%, 50%, .3);
-$blockquote-border: hsla(0, 0%, 50%, .3);
-$figcaption: #6b7280;
-$pre: #e5e7eb;
-$thead: #111827;
-$thead-border: #d1d5db;
-$tr-border: #e5e7eb;

src/scss/_vars/constants.scss

@@ -1,2 +0,0 @@
-$font-sans: 'Open Sans', 'Noto Sans TC', 'Inter', 'Roboto', 'Helvetica', 'Arial', 'Microsoft JhengHei', 'Microsoft YaHei', sans-serif;
-$font-monospace: 'DM Mono', 'Fira Code', 'Jetbrains Mono', 'Input Mono', 'Ubuntu', monospace;

src/scss/_vars/dark.scss

@@ -1,3 +0,0 @@
-$general: #bbb;
-$dark: #ddd;
-$darker: #fff;

src/scss/_vars/light.scss

@@ -1,3 +0,0 @@
-$general: #555;
-$dark: #222;
-$darker: #000;

src/scss/markdown.scss

@@ -1,177 +0,0 @@
-.markdown-body {
-  color: var(--xm-c-general);
-  font-family: var(--xm-font-sans) !important;
-  pre {
-    &:not(.shiki, .highlight) {
-      margin: 0;
-      padding: 0;
-      background: transparent;
-    }
-  }
-  .shiki,
-  .highlight {
-    margin: .5rem 0;
-    font-size: 1.05rem;
-    font-family: var(--xm-font-monospace) !important;
-    line-height: 1.4;
-    &.shiki-light {
-      background: var(--xm-c-shiki-light) !important;
-    }
-    &.shiki-dark {
-      background: var(--xm-c-shiki-dark) !important;
-    }
-  }
-  img {
-    width: 100%;
-  }
-  a {
-    font-weight: inherit;
-    text-decoration: none;
-    border-bottom: 1px solid var(--xm-c-link-border);
-    transition: border .3s ease-in-out;
-    &:hover {
-      border-bottom: 1px solid var(--xm-c-general);
-    }
-    code {
-      color: inherit;
-    }
-  }
-  hr {
-    margin: 2rem auto;
-    width: 50px;
-  }
-  blockquote {
-    padding: .6rem 1.2rem;
-    font-weight: normal;
-    font-style: normal;
-    line-height: 1.5rem;
-    opacity: .8;
-    > * {
-      &:first-child {
-        margin-top: 0;
-      }
-      &:last-child {
-        margin-bottom: 0;
-      }
-    }
-    p {
-      &:first-of-type::before {
-        content: none;
-      }
-      &:first-of-type::after {
-        content: none;
-      }
-    }
-  }
-  &:first-child {
-    margin-top: 1rem;
-  }
-}
-.dark {
-  .shiki-light {
-    display: none;
-  }
-}
-html {
-  &:not(.dark) {
-    .shiki-dark {
-      display: none;
-    }
-  }
-}
-.itrem {
-  text-decoration: none;
-  opacity: .6;
-  transition: .2s all ease-out;
-  &:hover {
-    opacity: 1;
-  }
-}
-.header-anchor {
-  float: left;
-  margin-top: .125rem;
-  margin-left: -1.2rem;
-  padding-right: .5rem;
-  font-size: .85rem;
-  text-decoration: none;
-  border: 0 !important;
-  opacity: 0;
-  &:hover {
-    text-decoration: none;
-  }
-  &:focus {
-    text-decoration: none;
-  }
-}
-h1 {
-  &:hover {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-  &:focus {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-}
-h2 {
-  &:hover {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-  &:focus {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-}
-h3 {
-  &:hover {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-  &:focus {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-}
-h4 {
-  &:hover {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-  &:focus {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-}
-h5 {
-  &:hover {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-  &:focus {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-}
-h6 {
-  &:hover {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-  &:focus {
-    .header-anchor {
-      opacity: .5;
-    }
-  }
-}

src/scss/prose.scss

@@ -1,267 +0,0 @@
-.markdown-body,
-.prose {
-  max-width: 65ch;
-  font-size: 1rem;
-  color: var(--xm-c-general);
-  line-height: 1.75;
-  code {
-    font-size: .875rem;
-    font-weight: 600;
-    color: var(--xm-c-dark);
-    &::before, &::after {
-      content: '`';
-    }
-  }
-  a {
-    font-weight: 500;
-    text-decoration: none;
-    color: var(--xm-c-darker);
-    code {
-      color: var(--xm-c-code);
-    }
-  }
-  strong {
-    font-weight: 600;
-    color: var(--xm-c-dark);
-  }
-  li {
-    margin-top: .5rem;
-    margin-bottom: .5rem;
-  }
-  ol {
-    margin-top: 1.25rem;
-    margin-bottom: 1.25rem;
-    list-style-type: none;
-    > li {
-      position: relative;
-      padding-left: 1.75rem;
-      &::before {
-        content: counter(list-item, decimal) '.';
-        position: absolute;
-        left: 0;
-        font-weight: 400;
-        color: var(--xm-c-ol-counter);
-      }
-    }
-  }
-  ul {
-    margin-top: 1.25rem;
-    margin-bottom: 1.25rem;
-    list-style-type: none;
-    > li {
-      position: relative;
-      padding-left: 1.75rem;
-      &::before {
-        content: '';
-        position: absolute;
-        top: calc(.875rem - .1875rem);
-        left: .25rem;
-        width: .375rem;
-        height: .375rem;
-        background-color: var(--xm-c-ul-counter);
-        border-radius: 50%;
-      }
-    }
-  }
-  hr {
-    margin-top: 3rem;
-    border-color: var(--xm-c-hr-border);
-    margin-bottom: 3rem;
-    + * {
-      margin-top: 0;
-    }
-  }
-  p {
-    margin-top: 1.25rem;
-    margin-bottom: 1.25rem;
-  }
-  blockquote,
-  q {
-    margin-top: 1.6rem;
-    padding-left: 1rem;
-    font-weight: 500;
-    font-style: italic;
-    color: inherit;
-    border-color: var(--xm-c-blockquote-color);
-    border-left-width: .25rem;
-    quotes: '\201C''\201D''\2018''\2019';
-    margin-bottom: 1.6rem;
-    p {
-      &:first-of-type::before {
-        content: open-quote;
-      }
-      &:last-of-type::after {
-        content: close-quote;
-      }
-    }
-  }
-  h1 {
-    margin-top: 0;
-    margin-bottom: .8889rem;
-    font-size: 2.25rem;
-    font-weight: 800;
-    color: var(--xm-c-darker);
-    line-height: 1.1111;
-  }
-  h2 {
-    margin-top: 2rem;
-    font-size: 1.5rem;
-    font-weight: 700;
-    color: var(--xm-c-dark);
-    margin-bottom: 1rem;
-    line-height: 1.3334;
-    code {
-      font-size: .875rem;
-    }
-    + * {
-      margin-top: 0;
-    }
-  }
-  h3 {
-    margin-top: 1.6rem;
-    font-size: 1.25rem;
-    font-weight: 600;
-    color: inherit;
-    margin-bottom: .6rem;
-    line-height: 1.6;
-    opacity: .7;
-    code {
-      font-size: .9rem;
-    }
-    + * {
-      margin-top: 0;
-    }
-  }
-  h4 {
-    margin-top: 1.5rem;
-    font-weight: 600;
-    color: inherit;
-    margin-bottom: .5rem;
-    line-height: 1.5;
-    + * {
-      margin-top: 0;
-    }
-  }
-  figure {
-    margin-top: 2rem;
-    margin-bottom: 2rem;
-    figcaption {
-      margin-top: .8571rem;
-      font-size: .875rem;
-      color: var(--xm-c-figcaption);
-      line-height: 1.4286;
-    }
-    > * {
-      margin-top: 0;
-      margin-bottom: 0;
-    }
-  }
-  pre {
-    overflow-x: auto;
-    margin-top: 1.7143rem;
-    padding-top: .8571rem, 1.1429rem;
-    font-size: .875rem;
-    color: var(--xm-c-pre);
-    line-height: 1.7143;
-    margin-bottom: 1.7143rem;
-    border-radius: .375rem;
-    code {
-      padding: 0;
-      font-size: inherit;
-      font-family: inherit;
-      font-weight: 400;
-      color: inherit;
-      background: transparent;
-      border-width: 0;
-      border-radius: 0;
-      line-height: inherit;
-      &::before {
-        content: none;
-      }
-      &::after {
-        content: none;
-      }
-    }
-  }
-  table {
-    margin-top: 2rem;
-    margin-bottom: 2rem;
-    width: 100%;
-    table-layout: auto;
-    font-size: .875rem;
-    text-align: left;
-    line-height: 1.7143;
-  }
-  thead {
-    font-weight: 600;
-    color: var(--xm-c-thead);
-    border-bottom-width: 1px;
-    border-bottom-color: var(--xm-c-thead-border);
-    th {
-      vertical-align: bottom;
-      padding-right: .5714rem;
-      padding-bottom: .5714rem;
-      padding-left: .5714rem;
-      &:first-child {
-        padding-left: 0;
-      }
-      &:last-child {
-        padding-right: 0;
-      }
-    }
-  }
-  tbody {
-    tr {
-      border-bottom-width: 1px;
-      border-bottom-color: var(--xm-c-tr-border);
-      &:last-child {
-        border-bottom-width: 0;
-      }
-    }
-    td {
-      vertical-align: top;
-      padding: .5714rem;
-      &:first-child {
-        padding-left: 0;
-      }
-      &:last-child {
-        padding-right: 0;
-      }
-    }
-  }
-  img {
-    margin-top: 2rem;
-    margin-bottom: 2rem;
-  }
-  video {
-    margin-top: 2rem;
-    margin-bottom: 2rem;
-  }
-  h6 {
-    text-transform: uppercase;
-    margin-top: 20px;
-    margin-bottom: 10px;
-    font-weight: 500;
-    opacity: .5;
-    letter-spacing: 2px;
-  }
-  > :first-child {
-    margin-top: 0;
-  }
-  > :last-child {
-    margin-bottom: 0;
-  }
-  b {
-    color: var(--xm-c-dark);
-  }
-  em {
-    color: inherit;
-  }
-  ul ul,
-  ul ol,
-  ol ul,
-  ol ol {
-    margin-top: .75rem;
-    margin-bottom: .75rem;
-  }
-}

src/scss/vars.scss

@@ -1,25 +0,0 @@
-@use 'sass:meta' as *;
-
-@use '_vars/constants';
-@use '_vars/colors';
-@use '_vars/light';
-@use '_vars/dark';
-
-:root {
-  @each $name, $val in module-variables('constants') {
-    --xm-#{$name}: #{$val};
-  }
-  @each $name, $val in module-variables('colors') {
-    --xm-c-#{$name}: #{$val};
-  }
-}
-.markdown-body {
-  @each $name, $val in module-variables('light') {
-    --xm-c-#{$name}: #{$val};
-  }
-}
-.dark .markdown-body {
-  @each $name, $val in module-variables('dark') {
-    --xm-c-#{$name}: #{$val};
-  }
-}

src/variables/_constants.scss

@@ -0,0 +1,8 @@
+// Font stack
+$font-sans: 'Open Sans', 'Inter', 'Roboto', 'Helvetica', 'Arial', 'Sarasa Gothic TC', 'Sarasa Gothic SC', 'Noto Sans TC', 'Noto Sans SC', 'Microsoft JhengHei', 'Microsoft YaHei', -apple-system, sans-serif;
+$font-serif: 'Merriweather', 'Georgia', 'Times New Roman', 'Times', 'Source Han Serif Traditional Chinese', 'Source Han Serif Simplified Chinese', 'Noto Serif TC', 'Noto Serif SC', serif;
+$font-mono: 'DM Mono', 'Fira Code', 'Jetbrains Mono', 'Input Mono', 'Menlo', 'MesloLGS NF', 'Ubuntu', 'Sarasa Gothic TC', 'Sarasa Gothic SC', monospace;
+
+// Font defaults
+$font-display: var(--xm-font-sans);
+$font-code: var(--xm-font-mono);

src/variables/modes/_dark.scss

@@ -0,0 +1,10 @@
+// Dark mode
+
+$shallowest: #212121;
+$shallower: #555;
+$shallow: #777;
+$regular: #bbb;
+$deep: #ddd;
+$deeper: #fff;
+$border: hsla(0deg 0% 75% / .35);
+$border-table: hsla(0deg 0% 40% / .75);

src/variables/modes/_light.scss

@@ -0,0 +1,10 @@
+// Light mode
+
+$shallowest: #f8f8f8;
+$shallower: #ddd;
+$shallow: #bbb;
+$regular: #555;
+$deep: #222;
+$deeper: #000;
+$border: hsla(0deg 0% 50% / .35);
+$border-table: hsla(0deg 0% 50% / .5);