fix: 禁止iOS橡皮筋滚动，不再显示上下空白

overscroll-behavior:none + html overflow:hidden 防止页面过度滚动

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/index.css

@@ -1 +1,16 @@
 @import "tailwindcss";
+
+html, body {
+  overscroll-behavior: none;
+  -webkit-overflow-scrolling: touch;
+}
+
+html {
+  overflow: hidden;
+  height: 100%;
+}
+
+body {
+  overflow: auto;
+  height: 100%;
+}