diff --git a/Paxo/UI/PaxoStyle.swift b/Paxo/UI/PaxoStyle.swift
index 69f6e99..e48d479 100644
--- a/Paxo/UI/PaxoStyle.swift
+++ b/Paxo/UI/PaxoStyle.swift
@@ -1,25 +1,33 @@
 import AppKit
 import SwiftUI
 
-/// 모든 앱 화면에서 같은 브랜드 색상과 불투명 배경을 사용한다.
+/// 모든 앱 화면에서 같은 브랜드 색상과 표면 스타일을 사용한다.
 enum PaxoStyle {
     static let brand = Color(red: 27 / 255, green: 118 / 255, blue: 1)
     static let cornerRadius: CGFloat = 14
 }
 
 extension View {
-    func paxoSurface(cornerRadius: CGFloat = PaxoStyle.cornerRadius) -> some View {
-        background(Color(nsColor: .windowBackgroundColor))
-            .overlay {
-                RoundedRectangle(cornerRadius: cornerRadius)
-                    .strokeBorder(.primary.opacity(0.1), lineWidth: 0.5)
+    func paxoSurface(
+        cornerRadius: CGFloat = PaxoStyle.cornerRadius, isOpaque: Bool = false
+    ) -> some View {
+        background {
+            if isOpaque {
+                Color(nsColor: .windowBackgroundColor)
+            } else {
+                PaxoGlassBackground()
             }
-            .clipShape(RoundedRectangle(cornerRadius: cornerRadius))
-            .tint(PaxoStyle.brand)
+        }
+        .overlay {
+            RoundedRectangle(cornerRadius: cornerRadius)
+                .strokeBorder(.primary.opacity(0.1), lineWidth: 0.5)
+        }
+        .clipShape(RoundedRectangle(cornerRadius: cornerRadius))
+        .tint(PaxoStyle.brand)
     }
 
     func paxoWindowSurface() -> some View {
-        paxoSurface(cornerRadius: 0)
+        paxoSurface(cornerRadius: 0, isOpaque: true)
             .background(PaxoWindowBackground())
             .toolbarBackground(.hidden, for: .windowToolbar)
     }
@@ -49,3 +57,37 @@ private final class WindowBackgroundView: NSView {
         window.titlebarAppearsTransparent = true
     }
 }
+
+private struct PaxoGlassBackground: View {
+    @Environment(\.accessibilityReduceTransparency) private var reduceTransparency
+
+    var body: some View {
+        Group {
+            if reduceTransparency {
+                Color(nsColor: .windowBackgroundColor)
+            } else {
+                WindowGlass()
+            }
+        }
+        .allowsHitTesting(false)
+        .accessibilityHidden(true)
+    }
+}
+
+/// 창 뒤의 배경을 흐리게 하면서 텍스트 대비를 유지한다.
+private struct WindowGlass: NSViewRepresentable {
+    @Environment(\.colorScheme) private var colorScheme
+
+    func makeNSView(context: Context) -> NSVisualEffectView {
+        let view = NSVisualEffectView()
+        view.blendingMode = .behindWindow
+        view.material = .hudWindow
+        view.state = .active
+        updateNSView(view, context: context)
+        return view
+    }
+
+    func updateNSView(_ view: NSVisualEffectView, context: Context) {
+        view.appearance = NSAppearance(named: colorScheme == .dark ? .darkAqua : .aqua)
+    }
+}