front page enhancements

app/lessons/page.tsx

@@ -14,7 +14,6 @@ export default function LessonsOverview() {
           <div className="mb-4 flex items-center gap-3">
             <Badge variant={unit.color}>Unit {unit.number}</Badge>
             <h2 className="text-xl font-semibold">{unit.title}</h2>
-            <span className="hidden text-sm text-muted sm:inline">{unit.weeks}</span>
           </div>
           <div className="grid gap-4 sm:grid-cols-2">
             {unit.topics.map((topic) => (
@@ -22,8 +21,7 @@ export default function LessonsOverview() {
                 <Card accent={unit.color} hover className="group h-full">
                   <h3 className="mb-1 font-semibold">{topic.title}</h3>
                   <p className="mb-3 text-sm leading-relaxed text-muted">{topic.description}</p>
-                  <div className="flex items-center justify-between text-xs text-muted">
-                    <span>Week {topic.week}</span>
+                  <div className="flex items-center justify-end text-xs text-muted">
                     <span className="flex items-center gap-1 opacity-0 transition-opacity group-hover:opacity-100">
                       Explore
                       <svg className="h-3 w-3" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>