style: 优化页脚样式与布局细节

src/app.css

@@ -1008,7 +1008,7 @@ footer section p:first-child {
     line-height: 60px;
     height: 60px;
     width: 100%;
-    font-size: 18px;
+    font-size: 20px;
     font-weight: 600;
     text-transform: uppercase;
     text-align: center;
@@ -1049,6 +1049,7 @@ footer section p:first-child {
     overflow: hidden;
     display: block;
     width: 100%;
+    position: relative;
     color: #b0b0b0; /* VOID style dark text */
     transition: color 0.2s;
     text-decoration: none;
@@ -1069,6 +1070,7 @@ footer section p:first-child {
     display: block;
     height: 2.1rem;
     left: -1rem;
+    top: 0;
     position: absolute;
     width: calc(100% + 1rem);
     border-left: 2px solid #419b38;
@@ -1083,6 +1085,7 @@ footer section p:first-child {
         display: block;
         height: 2.1rem;
         left: -1rem;
+        top: 0;
         position: absolute;
         width: calc(100% + 1rem);
         border-left: 2px solid #419b38;