diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Theme.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Theme.java
index a120b6640..c72d69da0 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Theme.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Theme.java
@@ -25,6 +25,7 @@ import javafx.beans.binding.ObjectBinding;
 import javafx.scene.paint.Color;
 import javafx.scene.text.Font;
 import org.jackhuang.hmcl.ui.FXUtils;
+import org.jackhuang.hmcl.util.Pair;
 import org.jackhuang.hmcl.util.io.FileUtils;
 
 import java.io.File;
@@ -123,6 +124,45 @@ public class Theme {
                 opacity);
     }
 
+    private static Pair<String, String> parseFontStyle(String style) {
+        if (style == null) {
+            return null;
+        }
+
+        style = style.toLowerCase(Locale.ROOT);
+
+        String weight;
+        String posture;
+
+        if (style.contains("thin")) {
+            weight = "100";
+        } else if (style.contains("extralight") || style.contains("extra light") || style.contains("ultralight") | style.contains("ultra light")) {
+            weight = "200";
+        } else if (style.contains("medium")) {
+            weight = "500";
+        } else if (style.contains("semibold") || style.contains("semi bold") || style.contains("demibold") || style.contains("demi bold")) {
+            weight = "600";
+        } else if (style.contains("extrabold") || style.contains("extra bold") || style.contains("ultrabold") || style.contains("ultra bold")) {
+            weight = "800";
+        } else if (style.contains("black") || style.contains("heavy")) {
+            weight = "900";
+        } else if (style.contains("light")) {
+            weight = "lighter";
+        } else if (style.contains("bold")) {
+            weight = "bold";
+        } else {
+            weight = null;
+        }
+
+        if (style.contains("italic") || style.contains("oblique")) {
+            posture = "italic";
+        } else {
+            posture = null;
+        }
+
+        return Pair.pair(weight, posture);
+    }
+
     public String[] getStylesheets(String overrideFontFamily) {
         String css = "/assets/css/blue.css";
 
@@ -130,12 +170,12 @@ public class Theme {
                 ? System.getProperty("hmcl.font.override", System.getenv("HMCL_FONT"))
                 : overrideFontFamily;
 
-        String fontStyle = null;
+        Pair<String, String> fontStyle = null;
         if (fontFamily == null) {
             Optional<Font> font = tryLoadFont();
             if (font.isPresent()) {
                 fontFamily = font.get().getFamily();
-                fontStyle = font.get().getStyle();
+                fontStyle = parseFontStyle(font.get().getStyle());
             }
         }
 
@@ -159,8 +199,13 @@ public class Theme {
             else
                 themeBuilder.append("-fx-font-family:\"").append(fontFamily).append("\";");
 
-            if (fontStyle != null && !fontStyle.isEmpty())
-                themeBuilder.append("-fx-font-style:\"").append(fontStyle).append("\";");
+            if (fontStyle != null) {
+                if (fontStyle.getKey() != null)
+                    themeBuilder.append("-fx-font-weight:").append(fontStyle.getKey()).append(";");
+
+                if (fontStyle.getValue() != null)
+                    themeBuilder.append("-fx-font-style:").append(fontStyle.getValue()).append(";");
+            }
 
             themeBuilder.append('}');