优化ui，谱面替换，以及科研模糊

Assets/__so/levelConfig/RankConfig.cs

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+using UnityEngine;
+using System.Collections.Generic;
+
+[System.Serializable]
+public class RankThreshold
+{
+    public string rankName;
+    public float thresholdPercent;
+    public Sprite rankSprite;
+}
+
+[CreateAssetMenu(fileName = "RankConfig", menuName = "Config/RankConfig")]
+public class RankConfig : ScriptableObject
+{
+    public float baseScore = 2000000f;
+    public Sprite defaultSprite; // Equivalent to ufSprite
+
+    [Tooltip("Thresholds should be ordered from highest to lowest percent.")]
+    public List<RankThreshold> thresholds = new List<RankThreshold>();
+
+    public Sprite GetRankSprite(float score)
+    {
+        if (score <= 0) return defaultSprite;
+
+        Sprite bestSprite = defaultSprite;
+        float highestMatchingPercent = -1f;
+
+        // Ensure we handle baseScore correctly to avoid division by zero if we were to use percentages
+        // But multiplying is safer as long as baseScore is set.
+        
+        foreach (var threshold in thresholds)
+        {
+            if (threshold == null || threshold.rankSprite == null) continue;
+
+            float requiredScore = baseScore * threshold.thresholdPercent;
+            if (score >= requiredScore)
+            {
+                // We want the threshold with the HIGHEST percentage that the score satisfies
+                if (threshold.thresholdPercent > highestMatchingPercent)
+                {
+                    highestMatchingPercent = threshold.thresholdPercent;
+                    bestSprite = threshold.rankSprite;
+                }
+            }
+        }
+
+        return bestSprite;
+    }
+}