重新设计用户/作者卡片小工具：消除多层卡片堆叠

- WidgetUserCard/WidgetAuthorCard 内层根节点去掉重复的 zib-widget widget 类
- 用户卡片补 classname=widget_aksrt_user_card 钩子
- widget-batch5.css 新增外层 .zib-widget 包裹层透明化规则（含首页侧栏覆盖）
- 内层 .aksrt-user-card/.aksrt-author-card margin-bottom 归零，间距由外层统一
- 删除 custom-amount.css 重复的 .aksrt-user-card* 段
- 删除 sidebar.css 失效的 .widget-user-card* 死代码
- author-actions.css .user-card.author.zib-widget → .user-card.author

src/AKSRT/Widgets/WidgetAuthorCard.php

@@ -101,7 +101,7 @@ class WidgetAuthorCard extends \WP_Widget {
 			echo $args['before_title'] . esc_html($title) . $args['after_title']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 		}
 
-		$card_cls = 'aksrt-author-card user-card author zib-widget' . ($show_bg ? ' has-cover' : '') . $affix['class'];
+		$card_cls = 'aksrt-author-card user-card author' . ($show_bg ? ' has-cover' : '') . $affix['class'];
 		echo '<div class="' . esc_attr($card_cls) . '"' . $affix['attr'] . '>';
 		if ($show_bg) {
 			$bg = $cover !== '' ? ' style="background-image:url(' . esc_url($cover) . ')"' : '';

src/AKSRT/Widgets/WidgetUserCard.php

@@ -18,7 +18,10 @@ class WidgetUserCard extends \WP_Widget {
 		parent::__construct(
 			'aksrt_user_card',
 			__('用户卡片', 'aksrt'),
-			['description' => __('未登录显示登录入口；登录后显示当前用户卡片、签到、快捷按钮与更多文章。', 'aksrt')]
+			[
+				'description' => __('未登录显示登录入口；登录后显示当前用户卡片、签到、快捷按钮与更多文章。', 'aksrt'),
+				'classname'   => 'widget_aksrt_user_card',
+			]
 		);
 	}
 
@@ -122,7 +125,7 @@ class WidgetUserCard extends \WP_Widget {
 			? aksrt_get_user_name(['id' => $user_id, 'follow' => !$is_self, 'class' => 'flex ac jc'])
 			: '<a href="' . esc_url($profile_url) . '">' . esc_html($user->display_name) . '</a>';
 
-		echo '<div class="aksrt-user-card user-card zib-widget widget">';
+		echo '<div class="aksrt-user-card user-card">';
 		if ($show_cover) {
 			if ($cover !== '') {
 				echo '<div class="aksrt-user-card__cover user-cover graphic" style="background-image:url(' . esc_url($cover) . ')"></div>';
@@ -209,7 +212,7 @@ class WidgetUserCard extends \WP_Widget {
 			}
 		}
 
-		echo '<div class="aksrt-user-card user-card zib-widget widget is-guest">';
+		echo '<div class="aksrt-user-card user-card is-guest">';
 		if ($show_cover) {
 			$default_cover = '';
 			if (class_exists('\AKSRT\Settings\Settings') && method_exists('\AKSRT\Settings\Settings', 'get_user_cover_default')) {