mobile : fix home video autoplay + adjust expertise text offset

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/views/Expertise.svelte

@@ -47,7 +47,8 @@
     const wh          = window.innerHeight
     const wrapperRect = textContainer.parentElement.getBoundingClientRect()
     const el          = itemEls[currentItem]
-    offsetY = wh / 2 - wrapperRect.top - el.offsetTop - el.offsetHeight / 2 - 50
+    const additionalOffset = window.innerWidth > 800 ? 50 : 0;
+    offsetY = wh / 2 - wrapperRect.top - el.offsetTop - el.offsetHeight / 2 - additionalOffset
   }
 
   function initVideo() {

src/views/Home.svelte

@@ -32,6 +32,7 @@
       attempt()
     } else {
       video.addEventListener('canplay', attempt, { once: true })
+      video.load()
     }
   }