修复视觉验收夹具与运行态对比度

src/main/java/com/example/workutils/system/ui/MainWindow.java

@@ -121,9 +121,20 @@ public class MainWindow {
         menuButton.setFocusTraversable(true);
         menuButton.setOnAction(event -> navigationRail.toggle());
 
-        Label brand = new Label("WorkUtils", IconFactory.create(AppIcon.APP, 20));
-        brand.setContentDisplay(ContentDisplay.LEFT);
-        brand.setFont(Theme.sectionTitle());
+        FontIcon brandIcon = IconFactory.create(AppIcon.APP, 18);
+        StackPane brandIconContainer = new StackPane(brandIcon);
+        brandIconContainer.setId("app-brand-icon-container");
+        brandIconContainer.getStyleClass().add("app-brand-icon");
+        brandIconContainer.setMinSize(32, 32);
+        brandIconContainer.setPrefSize(32, 32);
+        brandIconContainer.setMaxSize(32, 32);
+        brandIconContainer.setAccessibleText("WorkUtils 应用图标");
+        brandIconContainer.setFocusTraversable(false);
+
+        Label brandText = new Label("WorkUtils");
+        brandText.setFont(Theme.sectionTitle());
+        HBox brand = new HBox(Theme.S2, brandIconContainer, brandText);
+        brand.setAlignment(Pos.CENTER_LEFT);
 
         toolbarChevron = IconFactory.create(AppIcon.CHEVRON_RIGHT, 14);
         toolbarChevron.setVisible(false);

src/main/java/com/example/workutils/system/ui/shell/NavigationRail.java

@@ -9,6 +9,7 @@ import javafx.application.Platform;
 import javafx.beans.property.ReadOnlyBooleanProperty;
 import javafx.beans.property.ReadOnlyBooleanWrapper;
 import javafx.css.PseudoClass;
+import javafx.geometry.Insets;
 import javafx.geometry.Pos;
 import javafx.scene.control.Button;
 import javafx.scene.control.ContentDisplay;
@@ -54,7 +55,13 @@ public final class NavigationRail extends VBox {
         buildBottomToggle();
 
         Separator separator = new Separator();
+        separator.setId("navigation-rail-separator");
         separator.getStyleClass().add(Theme.CSS_NAV_SEP);
+        separator.setPadding(Insets.EMPTY);
+        separator.setMinHeight(1);
+        separator.setPrefHeight(1);
+        separator.setMaxHeight(1);
+        separator.setFocusTraversable(false);
         getChildren().addAll(itemBox, separator, collapseButton);
 
         expanded.addListener((observable, oldValue, newValue) -> updateAppearance());

src/main/resources/css/light-theme.css

@@ -30,7 +30,18 @@
 }
 
 .nav-separator {
-    -fx-background-color: -workutils-border;
+    -fx-padding: 0;
+    -fx-min-height: 1px;
+    -fx-pref-height: 1px;
+    -fx-max-height: 1px;
+    -fx-background-color: transparent;
+}
+
+.nav-separator .line {
+    -fx-border-color: -workutils-border transparent transparent transparent;
+    -fx-border-width: 1px 0 0 0;
+    -fx-border-insets: 0;
+    -fx-padding: 0;
 }
 
 /* ============ ToggleButton 导航 ============ */
@@ -99,6 +110,22 @@
     -fx-max-height: 48px;
 }
 
+.app-brand-icon {
+    -fx-alignment: center;
+    -fx-background-color: -workutils-primary;
+    -fx-background-radius: 6px;
+    -fx-min-width: 32px;
+    -fx-pref-width: 32px;
+    -fx-max-width: 32px;
+    -fx-min-height: 32px;
+    -fx-pref-height: 32px;
+    -fx-max-height: 32px;
+}
+
+.app-brand-icon .app-icon {
+    -fx-icon-color: white;
+}
+
 /* ---- 内容区 ---- */
 .content-area {
     -fx-background-color: -workutils-bg;
@@ -153,6 +180,17 @@
     -fx-background-color: derive(-workutils-primary, -12%);
 }
 
+.btn-primary:disabled:running {
+    -fx-opacity: 1;
+    -fx-background-color: -workutils-primary;
+    -fx-text-fill: white;
+}
+
+.btn-primary:disabled:running .loading-spinner {
+    -fx-progress-color: white;
+    -fx-opacity: 1;
+}
+
 .btn-danger {
     -fx-background-color: -workutils-danger;
     -fx-text-fill: white;