feat(index): 更新footer-更新header-添加header背景,footer图标

src/index.css

@@ -33,4 +33,33 @@ html, body {
   .mod-codes-grid {
     grid-template-columns: repeat(4, minmax(0, 1fr));
   }
+}
+
+.nav-item {
+  position: relative;
+  overflow: hidden;
+}
+
+.nav-item::after {
+  content: '';
+  position: absolute;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  height: 0;
+  background: linear-gradient(to top, #22ffa7, transparent);
+  transition: height 0.2s ease-in-out;
+  opacity: 0.35;
+  pointer-events: none;
+  
+}
+
+.nav-item:hover::after,
+.nav-item.active::after {
+  height: 80%;  /* 向上打光的高度，可以调整 */
+}
+
+.nav-item:hover,
+.nav-item.active {
+  color: white;
 }