diff --git a/src/data/mockData.ts b/src/data/mockData.ts
index 891c5ef..9e3426e 100644
--- a/src/data/mockData.ts
+++ b/src/data/mockData.ts
@@ -84,7 +84,7 @@ export const routers: Router[] = [
     name: 'MIRT-BERT',
     type: 'academic',
     description: 'Multi-item response theory with BERT embeddings',
-    affiliation: 'Unknown',
+    affiliation: 'USTC',
     metrics: {
       arenaScore: 0.78,
       costRatioScore: 0.75,
@@ -102,7 +102,7 @@ export const routers: Router[] = [
     name: 'NIRT-BERT',
     type: 'academic',
     description: 'Neural item response theory with BERT-based routing',
-    affiliation: 'Unknown',
+    affiliation: 'USTC',
     metrics: {
       arenaScore: 0.76,
       costRatioScore: 0.70,
diff --git a/src/pages/HomePage.tsx b/src/pages/HomePage.tsx
index 9cea765..9b60529 100644
--- a/src/pages/HomePage.tsx
+++ b/src/pages/HomePage.tsx
@@ -37,6 +37,9 @@ const HomePage: React.FC = () => {
             <p className="hero-subtitle-short">
               Diverse dataset, extensive metrics, and live leaderboard
             </p>
+            <p className="hero-subtitle-short">
+              Diverse dataset, extensive metrics, and live leaderboard
+            </p>
             <div className="hero-actions">
               <Link to="/leaderboard" className="btn btn-primary">
                 <Trophy className="btn-icon" />
@@ -58,6 +61,7 @@ const HomePage: React.FC = () => {
                         <span className="rank">{index + 1}</span>
                         <span className="name">{router.name}</span>
                         <span className="affiliation">{router.affiliation}</span>
+                        <span className="affiliation">{router.affiliation}</span>
                       </div>
                     ))}
                   </div>
@@ -66,7 +70,7 @@ const HomePage: React.FC = () => {
                 <div className="cta-card">
                   <h3 className="cta-heading">Want to see your router on the leaderboard?</h3>
                   <p className="cta-description">
-                  Open a GitHub issue on our RouterArena platform.
+                  Email us or open a GitHub issue on RouterArena.
                   </p>
                   <a href="#contact" className="btn btn-primary">
                     Get Started →
@@ -91,6 +95,7 @@ const HomePage: React.FC = () => {
             >
               <BookOpen className="tab-icon" />
               Diverse Dataset
+              Diverse Dataset
             </button>
             <button
               className={`tab-button ${activeTab === 'metrics' ? 'active' : ''}`}
@@ -124,6 +129,7 @@ const HomePage: React.FC = () => {
                     <BookOpen />
                   </div>
                   <div>
+                    <h3>Diverse Dataset</h3>
                     <h3>Diverse Dataset</h3>
                     <p className="tab-subtitle">
                       {datasetInfo.totalQueries.toLocaleString()} queries across {datasetInfo.domains} domains
@@ -242,7 +248,7 @@ const HomePage: React.FC = () => {
         <div className="container">
           <h2 className="section-title">Research Team</h2>
           <p className="contact-description">
-            Contact us or open a GitHub issue to evaluate your router with RouterArena
+            Contact us or submit a GitHub issue to evaluate your router with RouterArena
           </p>
 
           {/* Action Buttons */}
diff --git a/src/pages/LeaderboardPage.css b/src/pages/LeaderboardPage.css
index bd66327..8ecf69d 100644
--- a/src/pages/LeaderboardPage.css
+++ b/src/pages/LeaderboardPage.css
@@ -166,6 +166,10 @@
   --lb-grid: 60px minmax(140px, 1.4fr) minmax(120px, 1fr) 0.8fr repeat(5, minmax(90px, 1fr));
 }
 
+:root {
+  --lb-grid: 60px minmax(140px, 1.4fr) minmax(120px, 1fr) 0.8fr repeat(5, minmax(90px, 1fr));
+}
+
 .leaderboard-header {
   display: grid;
   grid-template-columns: var(--lb-grid);
diff --git a/src/pages/LeaderboardPage.tsx b/src/pages/LeaderboardPage.tsx
index 8e06b92..3c9e1ad 100644
--- a/src/pages/LeaderboardPage.tsx
+++ b/src/pages/LeaderboardPage.tsx
@@ -295,16 +295,16 @@ const LeaderboardPage: React.FC = () => {
             <div className="metric-card">
               <h3>Cost Ratio Score</h3>
               <p>
-                Evaluates the cost of the router's choices relative to an oracle that always selects the cheapest correct model.
-                Routers with higher scores achieve comparable accuracy at lower inference cost.
+              Measures the performance a router achieves per unit of cost compared to the benchmarked routers.
+              A high score means it maintains strong accuracy while spending less on average across all queries.
               </p>
             </div>
 
             <div className="metric-card">
               <h3>Optimality Score</h3>
               <p>
-                Measures how often a router selects the optimal model (i.e., the model answers the question correctly with the lowest cost).
-                Higher values reflect closer alignment to cost-optimal routing behavior.
+              Captures how the router's ability to select the cheapest model that still produces a correct response.
+              High values indicate decisions that closely match ideal, cost-minimizing routing behavior.
               </p>
             </div>