added：昼夜模式，毛玻璃特效

themes/Ying/layouts/partials/head.html

@@ -6,6 +6,21 @@
   <link rel="alternate" type="application/rss+xml" title="{{ site.Title }}" href="/rss.xml">
   <!-- Favicon -->
   <link rel="icon" type="image/x-icon" href="/favicon.ico">
+  <script>
+    (function () {
+      try {
+        var theme = localStorage.getItem('theme');
+        if (!theme) {
+          if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
+            theme = 'dark';
+          } else {
+            theme = 'light';
+          }
+        }
+        document.documentElement.setAttribute('data-theme', theme);
+      } catch (e) {}
+    })();
+  </script>
   <!-- Stylesheets -->
   <link rel='stylesheet' href='/css/main.css'>
   <link rel="stylesheet" href="/css/normalize.css">
@@ -127,4 +142,4 @@
   <script>console.log("\n %c Amigo Theme %c https://usj.cc \n", "color: #fadfa3; background: #030307; padding:3px; font-size:12px;", "color: #ffffff;background: #16171a; padding: 3px; font-size: 12px;");</script>
   <meta name="keywords" content="大学,教程,blog,优世界,优设计,博客,大学生博客,生活,文案," />
   <meta name="template" content="Amigo" />
-</head>
+</head>