feat: 重构布局为上侧右结构，集成 antd 全局配置与中文语言

src/App.css

@@ -1,26 +1,9 @@
+* {
+  box-sizing: border-box;
+}
+
 body {
   margin: 0;
-  color: #fff;
+  padding: 0;
   font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
-  background-image: linear-gradient(to bottom, #020917, #101725);
-}
-
-.content {
-  display: flex;
-  min-height: 100vh;
-  line-height: 1.1;
-  text-align: center;
-  flex-direction: column;
-  justify-content: center;
-}
-
-.content h1 {
-  font-size: 3.6rem;
-  font-weight: 700;
-}
-
-.content p {
-  font-size: 1.2rem;
-  font-weight: 400;
-  opacity: 0.5;
 }