Update app.py

app.py

@@ -124,7 +124,7 @@ def get_new_passage_random(used_passages_set, target_level):
     - ユーザーの target_level に対応する目標FREよりも低い（=難しい）教材のみから選ぶ
       ※ flesch_score は passage_information.xlsx から取得
     """
-    level_to_flesch = {1: 90, 2: 75, 3: 65, 4: 55, 5: 40}
+    level_to_flesch = {1: 90, 2: 80, 3: 70, 4: 60, 5: 50}
     target_flesch = float(level_to_flesch[int(target_level)])
 
     files = glob.glob("passages/pg*.txt")
@@ -253,7 +253,7 @@ def extract_main_body(text: str) -> str:
 # ======================================================
 
 def rewrite_level(text, target_level):
-    level_to_flesch = {1: 90, 2: 75, 3: 65, 4: 55, 5: 40}
+    level_to_flesch = {1: 90, 2: 80, 3: 70, 4: 60, 5: 50}
     target_flesch = level_to_flesch[int(target_level)]
 
     prompt = f"""