style(hil): ProjectPanel toast 样式优化

src/components/ProjectPanel/ProjectPanel.module.css

 /* ===== 项目面板容器 ===== */
 .panel {
+  position: relative;
   width: 320px;
   background: #16161e;
   border-left: 1px solid #2a2a3a;
@@ -434,3 +435,60 @@
   display: inline-block;
   animation: spin 1s linear infinite;
 }
+
+/* ===== Toast 悬浮通知 ===== */
+@keyframes toastSlideIn {
+  from { transform: translateY(-12px); opacity: 0; }
+  to   { transform: translateY(0);     opacity: 1; }
+}
+
+@keyframes toastFadeOut {
+  from { opacity: 1; transform: translateY(0); }
+  to   { opacity: 0; transform: translateY(-8px); }
+}
+
+.toast {
+  position: absolute;
+  top: 12px;
+  left: 12px;
+  right: 12px;
+  z-index: 10;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 10px 14px;
+  background: rgba(22, 22, 30, 0.92);
+  backdrop-filter: blur(8px);
+  border: 1px solid rgba(34, 197, 94, 0.3);
+  border-radius: 8px;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
+  animation: toastSlideIn 0.25s ease-out;
+}
+
+.toastFading {
+  animation: toastFadeOut 0.4s ease-in forwards;
+}
+
+.toastText {
+  flex: 1;
+  font-size: 12px;
+  color: #86efac;
+  line-height: 1.4;
+}
+
+.toastClose {
+  background: none;
+  border: none;
+  color: rgba(134, 239, 172, 0.5);
+  font-size: 14px;
+  cursor: pointer;
+  padding: 2px 4px;
+  border-radius: 4px;
+  flex-shrink: 0;
+  transition: all 0.12s;
+}
+
+.toastClose:hover {
+  background: rgba(34, 197, 94, 0.15);
+  color: #86efac;
+}