优化移动端阅读体验、优化瞬间样式、修复导航target属性渲染错误

src/components/Navbar.astro

@@ -12,6 +12,7 @@ import ThemeSwitcher from "./ThemeSwitcher.astro";
         class="wi-navbar__logo"
         loading="eager"
         decoding="async"
+        onerror="this.style.display='none';this.nextElementSibling&&this.nextElementSibling.classList.add('wi-navbar__title')"
       />
       <span
         th:if="${#strings.isEmpty(theme.config?.basic?.logo)}"
@@ -30,7 +31,7 @@ import ThemeSwitcher from "./ThemeSwitcher.astro";
             <a
               th:each="menuItem : ${menu.menuItems}"
               th:href="@{${menuItem.status.href}}"
-              th:target="${menuItem.spec.target}"
+              th:target="${menuItem.spec?.target?.value == '_blank'} ? '_blank' : '_self'"
               th:text="${menuItem.status.displayName}"
               class="wi-navbar__link"
               th:data-href="${menuItem.status.href}"