diff --git a/src/assets/main.css b/src/assets/main.css
index 189dd13..76bf2b3 100644
--- a/src/assets/main.css
+++ b/src/assets/main.css
@@ -20,6 +20,18 @@
   }
 }
 
+/* iOS WebView 首帧偶发 vh/dvh 计算偏小，优先使用 fill-available 防止底部白边 */
+html.platform-ios {
+  --ss-app-height: -webkit-fill-available;
+}
+
+html.platform-ios,
+html.platform-ios body,
+html.platform-ios #root {
+  height: -webkit-fill-available;
+  min-height: -webkit-fill-available;
+}
+
 html,
 body,
 #root {
diff --git a/src/main.tsx b/src/main.tsx
index b7d4ac5..1a4ad95 100644
--- a/src/main.tsx
+++ b/src/main.tsx
@@ -135,6 +135,10 @@ if (isMacDesktop) {
   document.documentElement.classList.add("platform-macos")
 }
 
+if (isIos) {
+  document.documentElement.classList.add("platform-ios")
+}
+
 window.addEventListener("error", (e: any) => {
   const error = e?.error
   safeWriteLog({