diff --git a/padelnomics/src/padelnomics/static/css/custom.css b/padelnomics/src/padelnomics/static/css/custom.css
index ade5d97..0c5a6e7 100644
--- a/padelnomics/src/padelnomics/static/css/custom.css
+++ b/padelnomics/src/padelnomics/static/css/custom.css
@@ -45,18 +45,15 @@
 }
 
 /* Headings — Deep Navy, Inter
-   Specificity must match Pico's [data-theme=light] h1 (0,1,1)
-   to win over dark-mode heading colors on dark-OS systems. */
-[data-theme="light"] h1,
-[data-theme="light"] h2,
-[data-theme="light"] h3,
-[data-theme="light"] h4,
-[data-theme="light"] h5,
-[data-theme="light"] h6 {
-  --pico-color: #0F172A;
-  color: #0F172A;
+   Force heading colors with !important to beat Pico's multi-layer
+   variable cascade (theme selectors + prefers-color-scheme media). */
+h1, h2, h3, h4, h5, h6 {
+  color: #0F172A !important;
   font-family: 'Inter', system-ui, -apple-system, sans-serif;
 }
+h4, h5, h6 {
+  color: #1E293B !important;
+}
 
 /* Data & metrics use monospace */
 .metric, .mono, [data-mono] {