Update Firefox version to 134.0.2 in README and configuration files; adjust CSS font-family for macOS.

src/browser/base/content/zen-styles/zen-theme.css

@@ -189,15 +189,9 @@
   );
 
   /** Other theme-related styles */
-  font-family:
-    SF Pro,
-    ui-sans-serif,
-    system-ui,
-    sans-serif,
-    Apple Color Emoji,
-    Segoe UI Emoji,
-    Segoe UI Symbol,
-    Noto Color Emoji;
+  @media (-moz-platform: macos) {
+    font-family: "SF Pro";
+  }
 }
 
 @media (prefers-color-scheme: dark) {

src/browser/base/zen-components/ZenGlanceManager.mjs

@@ -108,15 +108,16 @@
         this.browserWrapper.style.left = `${initialX}px`;
         this.browserWrapper.style.width = `${initialWidth}px`;
         this.browserWrapper.style.height = `${initialHeight}px`;
+        this.browserWrapper.style.opacity = 0.8;
         gZenUIManager.motion
           .animate(
             this.browserWrapper,
             {
-              top: [`${initialY}px`, '50%'],
-              left: [`${initialX}px`, '50%'],
-              width: [`${initialWidth}px`, '85%'],
-              height: [`${initialHeight}px`, '100%'],
-              opacity: [0.8, 1],
+              top: "50%",
+              left: "50%",
+              width: "85%",
+              height: "100%",
+              opacity: 1,
             },
             {
               duration: 0.5,