diff --git a/internal/service/hot_rank_worker.go b/internal/service/hot_rank_worker.go
index df2a52d..e8645e9 100644
--- a/internal/service/hot_rank_worker.go
+++ b/internal/service/hot_rank_worker.go
@@ -17,6 +17,11 @@ import (
 	"go.uber.org/zap"
 )
 
+type hotRankScored struct {
+	idx  int
+	norm float64
+}
+
 // HotRankWorker 定时在候选池上重算热门分，写入 Redis ZSET（仅 TopN）及 top_ids（Redis+本地缓存）
 type HotRankWorker struct {
 	cfg        *config.Config
@@ -145,13 +150,8 @@ func (w *HotRankWorker) Refresh(ctx context.Context) error {
 		return nil
 	}
 
-	type scored struct {
-		idx  int
-		norm float64
-	}
-
 	var snapshots []repository.PostHotSnapshot
-	var ranked []scored
+	var ranked []hotRankScored
 	if len(candidateIDs) > 0 {
 		snapshots, err = w.postRepo.GetPostHotSnapshotsByIDs(candidateIDs)
 		if err != nil {
@@ -179,7 +179,7 @@ func (w *HotRankWorker) Refresh(ctx context.Context) error {
 		minR := slices.Min(raw)
 		maxR := slices.Max(raw)
 
-		ranked = make([]scored, len(snapshots))
+		ranked = make([]hotRankScored, len(snapshots))
 		for i := range snapshots {
 			var norm float64
 			if maxR > minR {
@@ -187,9 +187,9 @@ func (w *HotRankWorker) Refresh(ctx context.Context) error {
 			} else {
 				norm = 1
 			}
-			ranked[i] = scored{idx: i, norm: norm}
+			ranked[i] = hotRankScored{idx: i, norm: norm}
 		}
-		slices.SortFunc(ranked, func(a, b scored) int {
+		slices.SortFunc(ranked, func(a, b hotRankScored) int {
 			if a.norm != b.norm {
 				return cmp.Compare(b.norm, a.norm) // 降序
 			}
@@ -364,13 +364,11 @@ func (w *HotRankWorker) refreshChannelRanks(
 			continue
 		}
 
-		var chSnapshots []repository.PostHotSnapshot
-		var chRanked []scored
-		filteredSnaps, ferr := w.postRepo.GetPostHotSnapshotsByIDs(chCandidateIDs)
-		if ferr != nil || len(filteredSnaps) == 0 {
+		var chRanked []hotRankScored
+		chSnapshots, ferr := w.postRepo.GetPostHotSnapshotsByIDs(chCandidateIDs)
+		if ferr != nil || len(chSnapshots) == 0 {
 			continue
 		}
-		chSnapshots = filteredSnaps
 
 		now := time.Now()
 		raw := make([]float64, len(chSnapshots))
@@ -391,7 +389,7 @@ func (w *HotRankWorker) refreshChannelRanks(
 		minR := slices.Min(raw)
 		maxR := slices.Max(raw)
 
-		chRanked = make([]scored, len(chSnapshots))
+		chRanked = make([]hotRankScored, len(chSnapshots))
 		for i := range chSnapshots {
 			var norm float64
 			if maxR > minR {
@@ -399,9 +397,9 @@ func (w *HotRankWorker) refreshChannelRanks(
 			} else {
 				norm = 1
 			}
-			chRanked[i] = scored{idx: i, norm: norm}
+			chRanked[i] = hotRankScored{idx: i, norm: norm}
 		}
-		slices.SortFunc(chRanked, func(a, b scored) int {
+		slices.SortFunc(chRanked, func(a, b hotRankScored) int {
 			if a.norm != b.norm {
 				return cmp.Compare(b.norm, a.norm)
 			}