correct colors of formulas

docs/assets/css/unicado.css

@@ -3,6 +3,7 @@
   --primary-color: #2C3E50;      /* Primary color for headers, hero section, and cards */
   --background-color: #34495E;   /* Background color for main content areas */
   --text-color: #D1D5DB;         /* Main text color for readability on dark backgrounds */
+  --math-color: var(--text-color); /* Set the default color for equations */
   --button-bg-color: #ffffff;    /* Background color for buttons */
   --accent-color: #E74C3C;       /* Accent color for links and hover effects */
   --secondary-accent: #1ABC9C;   /* Secondary accent color for icons */
@@ -10,6 +11,10 @@
   --link-hover-color: #E74C3C;   /* Hover color for links */
 }
 
+[data-md-color-scheme=default] {
+  --math-color: #000000;         /* Set the default color for equations */
+}
+
 .md-header {
   background-color: var(--primary-color);
 }
@@ -47,10 +52,6 @@
   font-size: 1.1em;
 }
 
-/* Make all LaTeX-style math equations white */
-:root {
-  --math-color: #ffffff; /* Set the default color for equations */
-}
 
 /* MathJax equations */
 .MathJax, mjx-container, math {
@@ -58,7 +59,7 @@
 }
 
 /* KaTeX equations */
-.katex, .katex-display {
+.katex, .katex-display, .katex * {
   color: var(--math-color) !important;
 }