From e4689268f28bbe58f8550c890ca44aa00d95dd21 Mon Sep 17 00:00:00 2001
From: Yu Cong <sxlxcsxlxc@gmail.com>
Date: Thu, 9 Apr 2026 00:23:01 +0800
Subject: [PATCH] Enhance CSS link styles and refactor variable names in
 site.hs for clarity

---
 assets/css/default.css | 21 ++++++++++++----
 src/site.hs            | 57 +++++++++++++++++++++---------------------
 2 files changed, 45 insertions(+), 33 deletions(-)

diff --git a/assets/css/default.css b/assets/css/default.css
index 0291d66..9573e42 100644
--- a/assets/css/default.css
+++ b/assets/css/default.css
@@ -4,6 +4,8 @@
     --color-tag2: darkolivegreen;
     --color-bg: white;
     --color-notice: #fb4f4f;
+    --color-link: #0645ad;
+    --color-link-visited: #551a8b;
 }
 
 html {
@@ -25,9 +27,18 @@ body {
 }
 
 body a {
+    color: var(--color-link);
     text-decoration: none;
 }
 
+body a:visited {
+    color: var(--color-link-visited);
+}
+
+body a[href^="#"]:visited {
+    color: var(--color-link);
+}
+
 body a:hover {
     text-decoration: underline;
 }
@@ -321,18 +332,18 @@ code {
         margin-bottom: 0.5em;
         padding-left: 1em;
         line-height: 1.2;
-        list-style-type: decimal;
-        margin-left: 0
-    }
-
-    div#contents-big ul ul {
         list-style-type: none;
+        margin-left: 0
     }
 
     div#contents-big li+li {
         margin-top: 0.5em
     }
 
+    div#contents-big .toc-section-number {
+        margin-right: 0.2em;
+    }
+
     div#contents-big {
         font-size: 80%;
         padding-top: 0;
diff --git a/src/site.hs b/src/site.hs
index aa67641..61feda1 100644
--- a/src/site.hs
+++ b/src/site.hs
@@ -9,29 +9,29 @@ import Hakyll
 import System.FilePath
 import Text.Pandoc
 
-notesPattern :: Pattern
-notesPattern = "main.md"
+mdfiles :: Pattern
+mdfiles = "main.md"
 
-imagesPattern :: Pattern
-imagesPattern = "images/**"
+images :: Pattern
+images = "images/**"
 
-mathMacrosPath :: FilePath
-mathMacrosPath = "assets/math-macros.tex"
+mathMacro :: FilePath
+mathMacro = "assets/math-macros.tex"
 
-bibStylePath :: FilePath
-bibStylePath = "assets/bib_style.csl"
+cslfile :: FilePath
+cslfile = "assets/bib_style.csl"
 
-bibliographyPath :: FilePath
-bibliographyPath = "ref.bib"
+reference :: FilePath
+reference = "ref.bib"
 
-fontsPattern :: Pattern
-fontsPattern = "assets/fonts/*"
+fonts :: Pattern
+fonts = "assets/fonts/*"
 
-faviconPath :: FilePath
-faviconPath = "assets/favicon.ico"
+favicon :: FilePath
+favicon = "assets/favicon.ico"
 
-cssPattern :: Pattern
-cssPattern = "assets/css/*"
+css :: Pattern
+css = "assets/css/*"
 
 templatesPattern :: Pattern
 templatesPattern = "assets/templates/*"
@@ -45,9 +45,9 @@ templatePostlist = fromFilePath "assets/templates/post-list.html"
 chaoDocFiles :: ChaoDocFiles
 chaoDocFiles =
   ChaoDocFiles
-    { chaoDocCslFile = bibStylePath,
-      chaoDocBibFile = bibliographyPath,
-      chaoDocMacroFile = mathMacrosPath
+    { chaoDocCslFile = cslfile,
+      chaoDocBibFile = reference,
+      chaoDocMacroFile = mathMacro
     }
 
 config :: Configuration
@@ -60,29 +60,29 @@ config =
 
 main :: IO ()
 main = hakyllWith config $ do
-  match imagesPattern $ do
+  match images $ do
     route idRoute
     compile copyFileCompiler
 
-  match (fromGlob mathMacrosPath) $ compile getResourceBody
+  match (fromGlob mathMacro) $ compile getResourceBody
 
-  match (fromGlob bibStylePath) $ compile cslCompiler
+  match (fromGlob cslfile) $ compile cslCompiler
 
-  match (fromGlob bibliographyPath) $ compile biblioCompiler
+  match (fromGlob reference) $ compile biblioCompiler
 
-  match fontsPattern $ do
+  match fonts $ do
     route $ gsubRoute "assets/fonts/" (const "fonts/")
     compile copyFileCompiler
 
-  match (fromGlob faviconPath) $ do
+  match (fromGlob favicon) $ do
     route $ constRoute "favicon.ico"
     compile copyFileCompiler
 
-  match cssPattern $ do
+  match css $ do
     route $ gsubRoute "assets/css/" (const "css/")
     compile compressCssCompiler
 
-  match notesPattern $ do
+  match mdfiles $ do
     route $ setExtension "html"
     compile $ do
       tocCtx <- getTocCtx defaultContext
@@ -93,7 +93,7 @@ main = hakyllWith config $ do
   create ["index.html"] $ do
     route idRoute
     compile $ do
-      posts <- loadAll notesPattern
+      posts <- loadAll mdfiles
       let indexCtx =
             constField "title" ""
               `mappend` constField "toc" ""
@@ -131,6 +131,7 @@ getTocCtx ctx = do
       pure $
         writerOpts
           { writerTableOfContents = True,
+            writerNumberSections = True,
             writerTOCDepth = 2,
             writerTemplate = tmpl,
             writerHTMLMathMethod = MathML