fix: remove hero fade-in animation that delayed LCP

The hero-rise fade-in started .hero-copy, which holds the LCP <h1>, at opacity 0, and Chrome ignores opacity-0 paints for LCP, delaying it by about 455 ms.

Co-Authored-By: Claude <noreply@anthropic.com>

website/static/style.css

@@ -280,7 +280,6 @@ kbd {
 .hero-copy {
   width: 100%;
   max-width: none;
-  animation: hero-rise 700ms cubic-bezier(0.22, 1, 0.36, 1) both;
 }
 
 .hero-kicker,
@@ -354,7 +353,6 @@ kbd {
   align-items: start;
   padding-top: 1.35rem;
   border-top: 1px solid var(--hero-line);
-  animation: hero-rise 820ms cubic-bezier(0.22, 1, 0.36, 1) 110ms both;
 }
 
 .hero-category-meta h2 {
@@ -1658,17 +1656,6 @@ th[data-sort].sort-asc::after {
   border: 0;
 }
 
-@keyframes hero-rise {
-  from {
-    opacity: 0;
-    transform: translateY(1.3rem);
-  }
-  to {
-    opacity: 1;
-    transform: translateY(0);
-  }
-}
-
 @keyframes expand-in {
   from {
     opacity: 0;