style(skills): disable uppercase on accordion titles; compact vertical rhythm (category/grid spacing)

public/css/main.css

@@ -4037,7 +4037,7 @@ html[data-font="mono"] .portfolio-card__title {
 .skills-category {
   position: relative;
   border-radius: 0;
-  padding: clamp(0.75rem, 1.6vw, 1.18rem) 0;
+  padding: clamp(0.5rem, 1vw, 0.8rem) 0;
 }
 
 .skills-category__title {
@@ -4084,6 +4084,7 @@ html[data-font="mono"] .portfolio-card__title {
 
 .skills-category__title-text {
   min-width: 0;
+  text-transform: none;
 }
 
 .skills-category__chevron {
@@ -4137,10 +4138,10 @@ html[data-font="geologica"] .skills-category__title {
 
 .skills-category__grid {
   display: grid;
-  gap: 1.5rem;
+  gap: 1.1rem;
   grid-template-columns: 1fr;
-  padding-top: 0.45rem;
-  padding-bottom: 0.55rem;
+  padding-top: 0.3rem;
+  padding-bottom: 0.35rem;
 }
 
 @media (min-width: 720px) {
@@ -4197,7 +4198,7 @@ html[data-font="geologica"] .skills-category__title {
 
   .skills-category__title {
     position: static;
-    margin-bottom: 1rem;
+    margin-bottom: 0.6rem;
     z-index: auto;
     line-height: 1.22;
     max-width: none;