feat(banner): 替换为高端大气纯净3D科技艺术主视觉，彻底移除繁杂文字与UI截图，并调优通透遮罩

addons/official/view/web/official_common/mobile/link.html

@@ -1,4 +1,4 @@
-<link rel="stylesheet" href="__ADDON__/css/modern_nhc.css?v=20261009_vivid">
+<link rel="stylesheet" href="__ADDON__/css/modern_nhc.css?v=20261009_grand">
 <link rel="stylesheet" href="__ADDON__/m/css/materialize.css">
 <link rel="stylesheet" href="__ADDON__/m/css/loader.css">
 <link rel="stylesheet" href="__ADDON__/m/css/lightbox.css">

addons/official/view/web/official_common/pc/link.html

@@ -1,5 +1,5 @@
 <link href="__ADDON__/images/favicon.ico" type="image/x-icon" rel="icon">
-<link href="__ADDON__/css/modern_nhc.css?v=20261009_vivid" rel="stylesheet" type="text/css">
+<link href="__ADDON__/css/modern_nhc.css?v=20261009_grand" rel="stylesheet" type="text/css">
 <link href="__ADDON__/css/style.css" rel="stylesheet" type="text/css">
 <link href="__ADDON__/css/animate.css" rel="stylesheet" type="text/css">
 <link href="__ADDON__/css/page_style.css" rel="stylesheet" type="text/css">