Fix leaderboard header colors and update paper/code URLs

Lighten table header backgrounds for better readability and add
actual arxiv/GitHub links in place of placeholder '#' hrefs.

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

create_leaderboard.py

@@ -92,8 +92,8 @@ with gr.Blocks(title="M3-Bench Leaderboard") as demo:
     </div>
     <div class="intro-block">
         Evaluating LLMs through game-theoretic interactions across 4 difficulty levels and 3 evaluation views.<br>
-        <a href="#" target="_blank">📄 Paper</a> |
-        <a href="#" target="_blank">💻 Code</a> |
+        <a href="https://arxiv.org/abs/2601.08462" target="_blank">📄 Paper</a> |
+        <a href="https://github.com/FredericVAN/PKU_M3Bench" target="_blank">💻 Code</a> |
         <a href="#" target="_blank">🌐 Website</a>
         <br>
         <span class="info-badge">🤖 Models: {model_count}</span>

tabs/leaderboard_tab.py

@@ -94,7 +94,7 @@ def make_ranked_html(df: pd.DataFrame, sort_col: str = "Overall") -> str:
             font-size: 14px;
         }
         .lb-table th {
-            background: #1a1a2e;
+            background: #4a6fa5;
             color: #fff;
             padding: 10px 8px;
             text-align: center;
@@ -104,7 +104,7 @@ def make_ranked_html(df: pd.DataFrame, sort_col: str = "Overall") -> str:
             z-index: 10;
         }
         .lb-table th.group-header {
-            border-bottom: 2px solid #16213e;
+            border-bottom: 2px solid #3a5f95;
         }
         .lb-table td {
             padding: 8px 8px;
@@ -153,7 +153,7 @@ def make_ranked_html(df: pd.DataFrame, sort_col: str = "Overall") -> str:
     html += '<th style="width:50px">Rank</th>'
     html += '<th style="text-align:left;width:180px">Model</th>'
     html += '<th style="width:80px">Category</th>'
-    html += '<th style="width:70px;background:#16213e">Overall</th>'
+    html += '<th style="width:70px;background:#3a5f95">Overall</th>'
 
     level_groups = [
         ("Level 1", ["PD", "SH", "UG"]),
@@ -171,7 +171,7 @@ def make_ranked_html(df: pd.DataFrame, sort_col: str = "Overall") -> str:
     # Second header row with group labels
     html += "<tr>"
     html += '<th colspan="4"></th>'
-    colors = ["#2a2a4a", "#2a3a2a", "#3a2a2a", "#2a2a3a", "#1a1a2e"]
+    colors = ["#5b7fb5", "#5b8f5b", "#8f5b5b", "#5b5b8f", "#4a6fa5"]
     for i, (name, cols) in enumerate(level_groups):
         html += f'<th colspan="{len(cols)}" class="group-header" style="background:{colors[i]};font-size:12px">{name}</th>'
     html += "</tr></thead>"