3d8566bc-063f-41e8-8934-68c9ac5b8211

src/components/game/TechTree.tsx

@@ -2,6 +2,7 @@
 // 回响星核 / Echo Nexus — 技术树
 import { useGameStore } from "@/store/gameStore";
 import { TECH_TREE, TECH_BRANCH_META, formatNum } from "@/lib/game/config";
+import { sfx } from "@/hooks/useAudio";
 import { Card } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
 import {
@@ -103,7 +104,9 @@ export function TechTree() {
                             size="sm"
                             variant={affordable ? "default" : "ghost"}
                             disabled={!affordable}
-                            onClick={() => buyTech(node.id)}
+                            onClick={() => {
+                              if (buyTech(node.id)) sfx("techBuy");
+                            }}
                             className="h-7 px-2 text-[11px] shrink-0"
                             style={
                               affordable