style(chat): align external browser dialog

src/app/chat/components/external-browser-dialog.module.css

@@ -5,18 +5,17 @@
   display: flex;
   align-items: center;
   justify-content: center;
-  padding: var(--spacing-md, 16px);
   background: rgba(0, 0, 0, 0.5);
 }
 
 .dialog {
-  width: 100%;
-  max-width: 360px;
-  padding: 24px 18px 18px;
+  width: calc(100% - 40px);
+  max-width: var(--pwa-install-dialog-max-width, 360px);
+  padding: 24px 16px 16px;
   text-align: center;
   background: var(--color-page-background, #ffffff);
-  border-radius: 32px;
-  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.22);
+  border-radius: 40px;
+  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
 }
 
 .title {
@@ -28,35 +27,40 @@
 }
 
 .content {
-  margin: 0 12px 22px;
-  font-size: var(--font-size-md, 15px);
+  margin: 0 24px var(--spacing-xxl, 24px);
+  font-size: var(--font-size-lg, 16px);
   line-height: 1.5;
-  color: var(--color-text-secondary, #555555);
+  text-align: left;
+  color: #393939;
   white-space: pre-line;
 }
 
 .actions {
   display: flex;
   gap: var(--spacing-md, 12px);
+  width: 100%;
 }
 
 .button {
   flex: 1 1 auto;
-  height: 44px;
+  height: var(--pwa-button-height, 44px);
   border: 0;
-  border-radius: 999px;
-  font-size: var(--font-size-md, 15px);
-  font-weight: 700;
+  border-radius: var(--radius-bottom-sheet, 28px);
+  font-size: var(--font-size-lg, 16px);
+  font-weight: 600;
   cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
 }
 
 .secondary {
-  color: var(--color-text-secondary, #555555);
-  background: #efefef;
+  color: var(--color-page-background, #ffffff);
+  background: var(--color-text-secondary, #9e9e9e);
 }
 
 .primary {
-  color: #ffffff;
+  color: var(--color-page-background, #ffffff);
   background: linear-gradient(
     var(--color-button-gradient-start, #ff67e0),
     var(--color-button-gradient-end, #ff52a2)

src/app/chat/components/external-browser-dialog.tsx

@@ -27,8 +27,7 @@ export function ExternalBrowserDialog({
           Open in browser
         </h2>
         <p className={styles.content}>
-          Sync your Facebook profile to an external browser{"\n"}
-          for the best chat experience.
+          Sync your Facebook profile to an external browser for the best chat experience.
         </p>
         <div className={styles.actions}>
           <button