feat: 去除 jQuery (fancybox和圖庫 仍需要加載jQuery)

feat: 點擊文字特效增加隨機配置
feat: 可配置是否添加css前綴
fix: 修復子目錄下，配置justifiedGallery CDN（相對鏈接）後，連接會無法訪問的bugs
fix: 修復 pangu 配置post 後，仍在全站生效的bugs
improvement: 夜間模式下，廣告降低亮度
improvement: 手機端toc邊距微調
improvement: html格式優化
improvement: 搜索優化
improvement: 刪除不必要的語言文件

source/css/_global/function.styl

@@ -151,6 +151,13 @@ if hexo-config('avatar.effect') == true
   100%
     opacity: 1
 
+@keyframes to_hide
+  0%
+    opacity: 1
+
+  100%
+    opacity: 0
+
 @keyframes ribbon_to_show
   0%
     opacity: 0
@@ -196,4 +203,4 @@ if hexo-config('avatar.effect') == true
     transform: translateX(200px)
 
   100%
-    transform: translateX(0)
+    transform: translateX(0)

source/css/_global/index.styl

@@ -57,16 +57,17 @@ body
 input::placeholder
   color: var(--font-color)
 
-#web_bg
-  position: fixed
-  z-index: -999
-  width: 100%
-  height: 100%
-  background: $web-bg
-  background-attachment: local
-  background-position: center
-  background-size: cover
-  background-repeat: no-repeat
+if $web-bg
+  #web_bg
+    position: fixed
+    z-index: -999
+    width: 100%
+    height: 100%
+    background: $web-bg
+    background-attachment: local
+    background-position: center
+    background-size: cover
+    background-repeat: no-repeat
 
 h1,
 h2,
@@ -198,20 +199,13 @@ img
   max-width: 100%
   transition: all .2s
 
-img[src=''],
-img:not([src])
-  opacity: 0
+  &[src=''],
+  &:not([src])
+    opacity: 0
 
 .img-alt
   margin: -.5rem 0 .5rem
   color: #858585
 
   &:hover
-    text-decoration: none !important
-
-.post-ad
-  margin: 2rem 0
-
-.ad-height
-  display: block !important
-  height: auto !important
+    text-decoration: none !important