style(web): 统一生产界面圆角为6px

zhixing-web/src/features/components/pages/components-preview-page.tsx

@@ -191,12 +191,12 @@ export function ComponentsPreviewPage() {
                     </Button>
                   </div>
                 </div>
-                <div className="rounded-lg border border-dashed border-border bg-muted/30 p-3 text-sm text-muted-foreground">
+                <div className="rounded-md border border-dashed border-border bg-muted/30 p-3 text-sm text-muted-foreground">
                   交互提示：打开日期弹层后，可以使用方向键移动、Enter
                   选择、Escape 关闭；月份切换按钮与日期按钮都保留可见焦点。
                 </div>
               </div>
-              <div className="rounded-xl border border-border bg-background p-2">
+              <div className="rounded-md border border-border bg-background p-2">
                 <Calendar
                   aria-label="日历组件示例"
                   defaultMonth={calendarDate}
@@ -248,7 +248,7 @@ export function ComponentsPreviewPage() {
             title="Surface & Feedback"
           >
             <div className="space-y-3">
-              <div className="flex items-center justify-between rounded-lg border border-border bg-muted/30 px-3 py-2 text-sm">
+              <div className="flex items-center justify-between rounded-md border border-border bg-muted/30 px-3 py-2 text-sm">
                 <span>数据同步状态</span>
                 <Badge>正常</Badge>
               </div>