fix(website): 减少移动端下安装步骤左侧空白，优化布局

Author: CC11001100

office-website/src/pages/Home/Home.module.css

@@ -580,7 +580,7 @@
   }
 
   .step p, .step ol, .step ul, .browserOptions, .installMethods {
-    margin-left: 0;
+    margin-left: 0.5rem;
   }
 
   .stepTitle {
@@ -590,12 +590,23 @@
 
   .stepNumber {
     margin-bottom: var(--space-2);
+    width: 1.8rem;
+    height: 1.8rem;
+    margin-right: var(--space-2);
   }
 
   .installSteps::before {
     display: none;
   }
 
+  .installMethods {
+    margin-left: 0.5rem;
+  }
+  
+  .methodSteps ol {
+    padding-left: var(--space-4);
+  }
+  
   .contributorItem {
     padding: var(--space-3);
   }
@@ -803,6 +814,14 @@
   .methodTitle {
     font-size: 1.1rem;
   }
+  
+  .installSteps::before {
+    left: 1.5rem;
+  }
+
+  .step p, .step ol, .step ul, .browserOptions {
+    margin-left: calc(2rem + var(--space-2));
+  }
 }
 
 .codeBlock {