feat: polish vidstack

src/app/globals.css

@@ -99,19 +99,3 @@ body {
 *::-webkit-scrollbar {
   display: none; /* Chrome, Safari, Opera */
 }
-
-/* 隐藏 Artplayer 顶部提示 */
-.art-notice {
-  display: none !important;
-}
-
-.art-poster {
-  background-size: contain !important; /* 使图片完整展示 */
-  background-position: center center !important; /* 居中显示 */
-  background-repeat: no-repeat !important; /* 防止重复 */
-  background-color: #000 !important; /* 其余区域填充为黑色 */
-}
-
-.art-video-player .art-layers {
-  z-index: 100 !important;
-}