diff --git a/.github/workflows/dev-build.yml b/.github/workflows/dev-build.yml
index 3611445..5a5390f 100644
--- a/.github/workflows/dev-build.yml
+++ b/.github/workflows/dev-build.yml
@@ -1,14 +1,11 @@
 name: Dev Build
 
 on:
-  push:
-    branches:
-      - dev**
   pull_request:
     types: [opened, synchronize, reopened]
 
 env:
-  DART_SASS_VERSION: 1.79.6
+  DART_SASS_VERSION: 1.81.0
 
 jobs:
   compile:
@@ -25,10 +22,12 @@ jobs:
           extract: true
       - name: Add Binary to PATH
         run: |
+          ln -s "$GITHUB_WORKSPACE/dart-sass/sass" "$GITHUB_WORKSPACE/dart-sass/dart-sass"
           echo "$GITHUB_WORKSPACE/dart-sass" >> "$GITHUB_PATH"
       - name: Compile
         run: |
-          cd ./src; make
+          cd ./src
+          make -j3
       - name: Upload Artifact
         uses: actions/upload-artifact@v4
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index feae70e..0da64df 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -6,7 +6,7 @@ on:
       - v*
 
 env:
-  DART_SASS_VERSION: 1.79.6
+  DART_SASS_VERSION: 1.81.0
 
 jobs:
   release:
@@ -23,10 +23,12 @@ jobs:
           extract: true
       - name: Add Binary to PATH
         run: |
+          ln -s "$GITHUB_WORKSPACE/dart-sass/sass" "$GITHUB_WORKSPACE/dart-sass/dart-sass"
           echo "$GITHUB_WORKSPACE/dart-sass" >> "$GITHUB_PATH"
       - name: Compile
         run: |
-          cd ./src; make all-and-compress
+          cd ./src
+          make all-and-compress -j3
       - name: Release
         uses: softprops/action-gh-release@v2
         if: startsWith(github.ref, 'refs/tags/')
diff --git a/src/Makefile b/src/Makefile
index ad25461..0c87623 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -19,9 +19,9 @@ define build
 	mkdir -p $(target_dir)/$(1)-$(2)
 	mkdir -p $(target_dir)/$(1)-$(2)/target
 	if [ "$(3)" = "light" ]; then \
-		sass --no-source-map --style expanded $(working_dir)/headers/$(1)/$(3).scss $(target_dir)/$(1)-$(2)/target/latex.css; \
+		dart-sass --no-source-map --style expanded $(working_dir)/headers/$(1)/$(3).scss $(target_dir)/$(1)-$(2)/target/latex.css; \
 	else \
-		sass --no-source-map --style expanded $(working_dir)/headers/$(1)/$(3).scss $(target_dir)/$(1)-$(2)/target/latex-$(3).css; \
+		dart-sass --no-source-map --style expanded $(working_dir)/headers/$(1)/$(3).scss $(target_dir)/$(1)-$(2)/target/latex-$(3).css; \
 	fi
 endef
 
@@ -46,19 +46,13 @@ define build-pandoc
 endef
 
 .PHONY: all
-all:
-	make windows
-	make macos
-	make linux
-	make pandoc
+all: windows macos linux
 
 .PHONY: all-and-compress
-all-and-compress:
-	make all
+all-and-compress: all
 	cd $(target_dir)/$(windows)-$(typora); zip -r $(target_dir)/latex-theme-$(windows).zip ./*
 	cd $(target_dir)/$(macos)-$(typora); zip -r $(target_dir)/latex-theme-$(macos).zip ./*
 	cd $(target_dir)/$(linux)-$(typora); zip -r $(target_dir)/latex-theme-$(linux).zip ./*
-#	cd $(target_dir)/$(pandoc)-$(typora); zip -r $(target_dir)/latex-theme-$(pandoc).zip ./*
 
 .PHONY: windows
 windows:
diff --git a/src/headers/linux/dark.scss b/src/headers/linux/dark.scss
index edea439..1df58c7 100644
--- a/src/headers/linux/dark.scss
+++ b/src/headers/linux/dark.scss
@@ -1,4 +1 @@
-$os: "linux";
-$theme: "dark";
-
-@import "../../scss/include.scss";
+@use "../../scss/include.scss" with ($os: "linux", $theme: "dark");
diff --git a/src/headers/linux/light.scss b/src/headers/linux/light.scss
index 22faec3..ca8b168 100644
--- a/src/headers/linux/light.scss
+++ b/src/headers/linux/light.scss
@@ -1,4 +1 @@
-$os: "linux";
-$theme: "light";
-
-@import "../../scss/include.scss";
+@use "../../scss/include.scss" with ($os: "linux", $theme: "light");
diff --git a/src/headers/macos/dark.scss b/src/headers/macos/dark.scss
index 2c103c4..b3730c2 100644
--- a/src/headers/macos/dark.scss
+++ b/src/headers/macos/dark.scss
@@ -1,4 +1 @@
-$os: "macos";
-$theme: "dark";
-
-@import "../../scss/include.scss";
+@use "../../scss/include.scss" with ($os: "macos", $theme: "dark");
diff --git a/src/headers/macos/light.scss b/src/headers/macos/light.scss
index b2613eb..2f6b2e4 100644
--- a/src/headers/macos/light.scss
+++ b/src/headers/macos/light.scss
@@ -1,4 +1 @@
-$os: "macos";
-$theme: "light";
-
-@import "../../scss/include.scss";
+@use "../../scss/include.scss" with ($os: "macos", $theme: "light");
diff --git a/src/headers/windows/dark.scss b/src/headers/windows/dark.scss
index cbb98c7..1ded830 100644
--- a/src/headers/windows/dark.scss
+++ b/src/headers/windows/dark.scss
@@ -1,4 +1 @@
-$os: "windows";
-$theme: "dark";
-
-@import "../../scss/include.scss";
+@use "../../scss/include.scss" with ($os: "windows", $theme: "dark");
diff --git a/src/headers/windows/light.scss b/src/headers/windows/light.scss
index 1d474b6..caa892d 100644
--- a/src/headers/windows/light.scss
+++ b/src/headers/windows/light.scss
@@ -1,4 +1 @@
-$os: "windows";
-$theme: "light";
-
-@import "../../scss/include.scss";
+@use "../../scss/include.scss" with ($os: "windows", $theme: "light");
diff --git a/src/scss/blockquote.scss b/src/scss/blockquote.scss
index fbe4e4b..b1cfcb2 100644
--- a/src/scss/blockquote.scss
+++ b/src/scss/blockquote.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 /* 一个>的引言仅为两字符缩进，使用>>的引言为传统引言样式，具有左竖线、左缩进 */
 
 blockquote {
diff --git a/src/scss/code.scss b/src/scss/code.scss
index 558c903..1c23617 100644
--- a/src/scss/code.scss
+++ b/src/scss/code.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 /* 行内代码 */
 code {
   font-family: var(--code-font), var(--ui-font), monospace; 
diff --git a/src/scss/dark.scss b/src/scss/dark.scss
index 38a00ba..b2b4a03 100644
--- a/src/scss/dark.scss
+++ b/src/scss/dark.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 @if $theme == "dark" {
   /* 可能的代码高亮样式
   .cm-s-inner {
diff --git a/src/scss/footnote.scss b/src/scss/footnote.scss
index 995dae7..db41b6b 100644
--- a/src/scss/footnote.scss
+++ b/src/scss/footnote.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 /* 参考文献（脚注）块 */
 .footnotes {
   font-size: 0.95em;
diff --git a/src/scss/heading.scss b/src/scss/heading.scss
index 050966d..793c6e1 100644
--- a/src/scss/heading.scss
+++ b/src/scss/heading.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 #write {
   // 标题属性
   h1,
diff --git a/src/scss/include.scss b/src/scss/include.scss
index 897984b..9c7408f 100644
--- a/src/scss/include.scss
+++ b/src/scss/include.scss
@@ -1,14 +1,17 @@
-@import "./settings.scss";
+$os: "" !default;
+$theme: "" !default;
 
-@import "./text.scss";
-@import "./typora.scss";
+@use "./settings.scss" with ($os: $os, $theme: $theme);
 
-@import "./heading.scss";
-@import "./footnote.scss";
-@import "./list.scss";
-@import "./table.scss";
-@import "./blockquote.scss";
-@import "./code.scss";
-@import "./toc.scss";
+@use "./text.scss" with ($os: $os, $theme: $theme);
+@use "./typora.scss" with ($os: $os, $theme: $theme);
 
-@import "./dark.scss";
+@use "./heading.scss" with ($os: $os, $theme: $theme);
+@use "./footnote.scss" with ($os: $os, $theme: $theme);
+@use "./list.scss" with ($os: $os, $theme: $theme);
+@use "./table.scss" with ($os: $os, $theme: $theme);
+@use "./blockquote.scss" with ($os: $os, $theme: $theme);
+@use "./code.scss" with ($os: $os, $theme: $theme);
+@use "./toc.scss" with ($os: $os, $theme: $theme);
+
+@use "./dark.scss" with ($os: $os, $theme: $theme);
diff --git a/src/scss/list.scss b/src/scss/list.scss
index a2cc17e..76c145a 100644
--- a/src/scss/list.scss
+++ b/src/scss/list.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 /* 无序列表 */
 #write ul {
   list-style: disc;
diff --git a/src/scss/settings.scss b/src/scss/settings.scss
index 42485e7..20d27ea 100644
--- a/src/scss/settings.scss
+++ b/src/scss/settings.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 :root {
   $ui-font: null;
   $heading-Chinese-font: null;
diff --git a/src/scss/table.scss b/src/scss/table.scss
index d9466b7..e9acd31 100644
--- a/src/scss/table.scss
+++ b/src/scss/table.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 #write {
   // 三线表
   table {
diff --git a/src/scss/text.scss b/src/scss/text.scss
index 80d335a..548c02b 100644
--- a/src/scss/text.scss
+++ b/src/scss/text.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 body {
   padding: 0 !important;
   margin: 0 !important;
diff --git a/src/scss/toc.scss b/src/scss/toc.scss
index 8dc4684..692beba 100644
--- a/src/scss/toc.scss
+++ b/src/scss/toc.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 /* 目录 */
 .md-toc {
   font-size: var(--toc-font-size);
diff --git a/src/scss/typora.scss b/src/scss/typora.scss
index 7a9d3d3..553021a 100644
--- a/src/scss/typora.scss
+++ b/src/scss/typora.scss
@@ -1,3 +1,6 @@
+$os: "" !default;
+$theme: "" !default;
+
 @media screen {
   #write {
     padding: var(--set-margin);