diff --git a/assets/css/frontend/widget-batch5.css b/assets/css/frontend/widget-batch5.css
index fcf64247..027d6884 100644
--- a/assets/css/frontend/widget-batch5.css
+++ b/assets/css/frontend/widget-batch5.css
@@ -2217,3 +2217,82 @@ a.main-color > .icon-cover-card:hover,
   width: 100vw;
   max-width: 100vw;
 }
+
+/* ===== Batch19-21: categories tree, hot meta, paid mini, main renderer, lang ===== */
+
+.aksrt-cat-list.has-thumb .aksrt-cat-list__link,
+.aksrt-cat-list.is-tree .aksrt-cat-list__link {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  text-decoration: none;
+  color: inherit;
+}
+.aksrt-cat-list__thumb {
+  width: 32px;
+  height: 32px;
+  border-radius: 8px;
+  overflow: hidden;
+  flex: 0 0 auto;
+  background: var(--surface-2, #f3f4f6);
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  color: #999;
+}
+.aksrt-cat-list__thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
+.aksrt-cat-list__text { min-width: 0; flex: 1; display: flex; flex-direction: column; }
+.aksrt-cat-list__name { font-weight: 600; }
+.aksrt-cat-list__desc { margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.aksrt-cat-list__children {
+  list-style: none;
+  margin: 6px 0 0 18px;
+  padding: 0;
+  border-left: 2px solid var(--color-line, #e5e7eb);
+  padding-left: 10px;
+}
+.aksrt-cat-list .count {
+  margin-left: auto;
+  font-size: 12px;
+  color: var(--muted-2-color, #999);
+  background: var(--surface-2, #f3f4f6);
+  border-radius: 999px;
+  padding: 1px 8px;
+}
+
+.aksrt-paid-posts__item.is-mini {
+  position: relative;
+  margin-bottom: 10px;
+}
+.aksrt-paid-posts__item.is-mini .aksrt-paid-posts__price.badge {
+  position: absolute;
+  top: 6px;
+  right: 6px;
+  z-index: 2;
+  background: rgba(239, 68, 68, .92);
+  color: #fff;
+  font-size: 11px;
+  padding: 2px 8px;
+  border-radius: 999px;
+}
+
+.aksrt-lang-switch-widget.hide-name .aksrt-lang-switch__toggle span,
+.aksrt-lang-switch-widget.hide-name .aksrt-lang-switch__item {
+  font-size: 0;
+}
+.aksrt-lang-switch-widget.hide-current .aksrt-lang-switch__item.is-active,
+.aksrt-lang-switch-widget.hide-current .aksrt-lang-switch__flag.is-active {
+  display: none;
+}
+.aksrt-lang-switch-widget.style-inline .aksrt-lang-switch--flags {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
+.aksrt-forum-widget__item.is-top .aksrt-forum-widget__rank {
+  background: var(--theme-color, #f04494);
+  color: #fff;
+}
+.tag-cloud.aksrt-tag-cloud a { transition: transform .15s ease; }
+.tag-cloud.aksrt-tag-cloud a:hover { transform: translateY(-1px); }
diff --git a/src/AKSRT/Widgets/CategoriesWidget.php b/src/AKSRT/Widgets/CategoriesWidget.php
index 5e412231..62e79ec8 100644
--- a/src/AKSRT/Widgets/CategoriesWidget.php
+++ b/src/AKSRT/Widgets/CategoriesWidget.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Categories list (zibll-like options depth).
+ * Categories list (zibll widget categories depth).
  *
  * @package AKSRT
  */
@@ -18,6 +18,7 @@ class CategoriesWidget extends \WP_Widget {
 			[
 				'description'                 => esc_html__('以列表形式展示文章分类', 'aksrt'),
 				'customize_selective_refresh' => true,
+				'classname'                   => 'widget_aksrt_categories',
 			]
 		);
 	}
@@ -37,6 +38,9 @@ class CategoriesWidget extends \WP_Widget {
 		return array_values(array_unique($ids));
 	}
 
+	/**
+	 * @param array<string,mixed> $instance
+	 */
 	public static function render_html(array $instance): string {
 		$count = max(1, min(50, (int) ($instance['count'] ?? 8)));
 		$orderby = sanitize_key((string) ($instance['orderby'] ?? 'count'));
@@ -48,12 +52,14 @@ class CategoriesWidget extends \WP_Widget {
 		$hierarchical = !empty($instance['hierarchical']);
 		$parent = max(0, (int) ($instance['parent'] ?? 0));
 		$show_count = !isset($instance['show_count']) || !empty($instance['show_count']);
+		$show_desc = !empty($instance['show_desc']);
+		$show_thumb = !empty($instance['show_thumb']);
 		$exclude = self::parse_ids_static((string) ($instance['exclude'] ?? ''));
 		$include = self::parse_ids_static((string) ($instance['include'] ?? ''));
 
 		$term_args = [
 			'taxonomy'     => 'category',
-			'number'       => $count,
+			'number'       => $hierarchical ? 0 : $count,
 			'orderby'      => $orderby,
 			'order'        => $order,
 			'hide_empty'   => $hide_empty,
@@ -61,6 +67,8 @@ class CategoriesWidget extends \WP_Widget {
 		];
 		if ($parent > 0) {
 			$term_args['parent'] = $parent;
+		} elseif ($hierarchical) {
+			$term_args['parent'] = 0;
 		}
 		if ($include) {
 			$term_args['include'] = $include;
@@ -79,19 +87,88 @@ class CategoriesWidget extends \WP_Widget {
 		}
 
 		ob_start();
-		echo '<ul class="widget-list aksrt-cat-list ajax-item">';
+		$cls = 'widget-list aksrt-cat-list ajax-item' . ($hierarchical ? ' is-tree' : '') . ($show_thumb ? ' has-thumb' : '');
+		echo '<ul class="' . esc_attr($cls) . '">';
+		$n = 0;
 		foreach ($cats as $cat) {
-			echo '<li>';
-			echo '<a href="' . esc_url(get_category_link($cat->term_id)) . '">' . esc_html($cat->name) . '</a>';
-			if ($show_count) {
-				echo '<span class="count">' . (int) $cat->count . '</span>';
+			if (!$hierarchical && $n >= $count) {
+				break;
 			}
-			echo '</li>';
+			echo self::render_cat_item($cat, $show_count, $show_desc, $show_thumb, $hierarchical ? 0 : -1, $count, $n, $hide_empty, $orderby, $order);
+			$n++;
 		}
 		echo '</ul>';
 		return (string) ob_get_clean();
 	}
 
+	/**
+	 * @param \WP_Term $cat
+	 */
+	private static function render_cat_item($cat, bool $show_count, bool $show_desc, bool $show_thumb, int $depth, int $limit, int &$n, bool $hide_empty, string $orderby, string $order): string {
+		if ($n > 0 && $limit > 0 && $n >= $limit && $depth >= 0) {
+			return '';
+		}
+		$html = '<li class="aksrt-cat-list__item depth-' . max(0, $depth) . '">';
+		$html .= '<a class="aksrt-cat-list__link" href="' . esc_url(get_category_link($cat->term_id)) . '">';
+		if ($show_thumb) {
+			$thumb = '';
+			$img_id = (int) get_term_meta($cat->term_id, 'thumbnail_id', true);
+			if (!$img_id) {
+				$img_id = (int) get_term_meta($cat->term_id, '_aksrt_cover', true);
+			}
+			if ($img_id) {
+				$thumb = (string) (wp_get_attachment_image_url($img_id, 'thumbnail') ?: '');
+			}
+			if ($thumb === '') {
+				$thumb = (string) get_term_meta($cat->term_id, '_aksrt_cover_url', true);
+			}
+			if ($thumb !== '') {
+				$ph = get_template_directory_uri() . '/assets/img/placeholder.svg';
+				$html .= '<span class="aksrt-cat-list__thumb"><img class="aksrt-lazy lazyload" data-src="' . esc_url($thumb) . '" src="' . esc_url($ph) . '" alt="" loading="lazy" width="32" height="32" /></span>';
+			} else {
+				$html .= '<span class="aksrt-cat-list__thumb is-empty"><i class="fa fa-folder-o" aria-hidden="true"></i></span>';
+			}
+		}
+		$html .= '<span class="aksrt-cat-list__text">';
+		$html .= '<span class="aksrt-cat-list__name">' . esc_html($cat->name) . '</span>';
+		if ($show_desc && $cat->description !== '') {
+			$desc = wp_trim_words(wp_strip_all_tags((string) $cat->description), 12, '…');
+			$html .= '<span class="aksrt-cat-list__desc muted-2-color em09">' . esc_html($desc) . '</span>';
+		}
+		$html .= '</span>';
+		if ($show_count) {
+			$html .= '<span class="count">' . (int) $cat->count . '</span>';
+		}
+		$html .= '</a>';
+
+		if ($depth >= 0) {
+			$children = get_categories([
+				'taxonomy'   => 'category',
+				'parent'     => (int) $cat->term_id,
+				'hide_empty' => $hide_empty,
+				'orderby'    => $orderby,
+				'order'      => $order,
+			]);
+			if ($children) {
+				$html .= '<ul class="aksrt-cat-list__children">';
+				foreach ($children as $child) {
+					$n++;
+					if ($limit > 0 && $n > $limit) {
+						break;
+					}
+					$html .= self::render_cat_item($child, $show_count, $show_desc, $show_thumb, $depth + 1, $limit, $n, $hide_empty, $orderby, $order);
+				}
+				$html .= '</ul>';
+			}
+		}
+		$html .= '</li>';
+		return $html;
+	}
+
+	/**
+	 * @param array<string,mixed> $args
+	 * @param array<string,mixed> $instance
+	 */
 	public function widget($args, $instance): void {
 		echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 
@@ -106,11 +183,9 @@ class CategoriesWidget extends \WP_Widget {
 		echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 	}
 
-	/** @return array<int,int> */
-	private function parse_ids(string $raw): array {
-		return self::parse_ids_static($raw);
-	}
-
+	/**
+	 * @param array<string,mixed> $instance
+	 */
 	public function form($instance): void {
 		?>
 		<p>
@@ -154,12 +229,19 @@ class CategoriesWidget extends \WP_Widget {
 		</p>
 		<p>
 			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_count')); ?>" value="1" <?php checked(!isset($instance['show_count']) || !empty($instance['show_count'])); ?>> <?php esc_html_e('显示数量', 'aksrt'); ?></label><br>
+			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_desc')); ?>" value="1" <?php checked(!empty($instance['show_desc'])); ?>> <?php esc_html_e('显示描述', 'aksrt'); ?></label><br>
+			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_thumb')); ?>" value="1" <?php checked(!empty($instance['show_thumb'])); ?>> <?php esc_html_e('显示封面', 'aksrt'); ?></label><br>
 			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('hide_empty')); ?>" value="1" <?php checked(!isset($instance['hide_empty']) || !empty($instance['hide_empty'])); ?>> <?php esc_html_e('隐藏空分类', 'aksrt'); ?></label><br>
-			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('hierarchical')); ?>" value="1" <?php checked(!empty($instance['hierarchical'])); ?>> <?php esc_html_e('层级', 'aksrt'); ?></label>
+			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('hierarchical')); ?>" value="1" <?php checked(!empty($instance['hierarchical'])); ?>> <?php esc_html_e('层级树', 'aksrt'); ?></label>
 		</p>
 		<?php
 	}
 
+	/**
+	 * @param array<string,mixed> $new_instance
+	 * @param array<string,mixed> $old_instance
+	 * @return array<string,mixed>
+	 */
 	public function update($new_instance, $old_instance): array {
 		$orderby = sanitize_key((string) ($new_instance['orderby'] ?? 'count'));
 		if (!in_array($orderby, ['count', 'name', 'id', 'slug'], true)) {
@@ -174,6 +256,8 @@ class CategoriesWidget extends \WP_Widget {
 			'include'      => sanitize_text_field((string) ($new_instance['include'] ?? '')),
 			'exclude'      => sanitize_text_field((string) ($new_instance['exclude'] ?? '')),
 			'show_count'   => !empty($new_instance['show_count']) ? 1 : 0,
+			'show_desc'    => !empty($new_instance['show_desc']) ? 1 : 0,
+			'show_thumb'   => !empty($new_instance['show_thumb']) ? 1 : 0,
 			'hide_empty'   => !empty($new_instance['hide_empty']) ? 1 : 0,
 			'hierarchical' => !empty($new_instance['hierarchical']) ? 1 : 0,
 		];
diff --git a/src/AKSRT/Widgets/HotPostsWidget.php b/src/AKSRT/Widgets/HotPostsWidget.php
index fb011cc5..430635bd 100644
--- a/src/AKSRT/Widgets/HotPostsWidget.php
+++ b/src/AKSRT/Widgets/HotPostsWidget.php
@@ -71,27 +71,46 @@ class HotPostsWidget extends \WP_Widget {
 			return '';
 		}
 		$show_thumb = !empty($instance['show_thumb']);
+			$order_by = sanitize_key((string) ($instance['order_by'] ?? 'views'));
+			$placeholder = get_template_directory_uri() . '/assets/img/placeholder.svg';
 		ob_start();
 		$index = $start;
 		while ($query->have_posts()) {
 			$query->the_post();
 			$index++;
 			$rank_class = $index <= 3 ? ' rank-top' : '';
-			$views = (int) get_post_meta(get_the_ID(), 'aksrt_post_views', true);
+			$pid = get_the_ID();
+				if ($order_by === 'comments') {
+					$metric = (int) get_comments_number($pid);
+					$metric_icon = 'fa-comment-o';
+				} elseif ($order_by === 'likes') {
+					$metric = function_exists('aksrt_get_post_likes') ? (int) aksrt_get_post_likes($pid) : (int) get_post_meta($pid, '_aksrt_like_count', true);
+					$metric_icon = 'fa-heart';
+				} elseif ($order_by === 'favorites') {
+					$metric = (int) get_post_meta($pid, '_aksrt_favorite_count', true);
+					$metric_icon = 'fa-star';
+				} elseif ($order_by === 'downloads') {
+					$metric = (int) get_post_meta($pid, '_aksrt_res_download_count', true);
+					$metric_icon = 'fa-download';
+				} else {
+					$metric = (int) get_post_meta($pid, 'aksrt_post_views', true);
+					$metric_icon = 'fa-eye';
+				}
+				$metric_txt = function_exists('aksrt_format_number') ? aksrt_format_number($metric) : (string) $metric;
 			?>
 			<div class="hot-post-item ajax-item <?php echo esc_attr($rank_class); ?>">
 				<span class="hot-post-item__rank"><?php echo esc_html((string) $index); ?></span>
 				<?php if ($show_thumb) :
-					$thumb = get_the_post_thumbnail_url(get_the_ID(), 'thumbnail');
+					$thumb = get_the_post_thumbnail_url($pid, 'thumbnail');
 					?>
 					<a class="hot-post-item__thumb<?php echo $thumb ? '' : ' is-empty'; ?>" href="<?php the_permalink(); ?>">
-						<?php if ($thumb) : ?><img src="<?php echo esc_url($thumb); ?>" alt="" loading="lazy" /><?php endif; ?>
+						<?php if ($thumb) : ?><img class="aksrt-lazy lazyload" data-src="<?php echo esc_url($thumb); ?>" src="<?php echo esc_url($placeholder); ?>" alt="" loading="lazy" /><?php endif; ?>
 					</a>
 				<?php endif; ?>
 				<div class="hot-post-item__info">
 					<a href="<?php the_permalink(); ?>" class="hot-post-item__title"><?php the_title(); ?></a>
 					<div class="hot-post-item__meta">
-						<span><i class="fas fa-eye" aria-hidden="true"></i> <?php echo esc_html(function_exists('aksrt_format_number') ? aksrt_format_number($views) : (string) $views); ?></span>
+						<span><i class="fa <?php echo esc_attr($metric_icon); ?>" aria-hidden="true"></i> <?php echo esc_html((string) $metric_txt); ?></span>
 						<span class="hot-post-item__time"><?php echo esc_html(human_time_diff(get_the_time('U'), current_time('timestamp')) . __('前', 'aksrt')); ?></span>
 					</div>
 				</div>
diff --git a/src/AKSRT/Widgets/TabPostsWidget.php b/src/AKSRT/Widgets/TabPostsWidget.php
index 22cdbabb..24054024 100644
--- a/src/AKSRT/Widgets/TabPostsWidget.php
+++ b/src/AKSRT/Widgets/TabPostsWidget.php
@@ -127,6 +127,11 @@ class TabPostsWidget extends \WP_Widget {
 		$tabs  = $this->normalize_tabs($instance['tabs'] ?? 'latest,comments,random');
 		$tabs  = array_values(array_filter($tabs, static fn($t) => !empty($t['enabled'])));
 		if (!$tabs) {
+			if (current_user_can('manage_options')) {
+				echo function_exists('aksrt_get_widget_null')
+					? aksrt_get_widget_null(__('请至少启用一个 Tab', 'aksrt')) // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+					: '<p class="widget-empty">' . esc_html__('请至少启用一个 Tab', 'aksrt') . '</p>';
+			}
 			echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
 			return;
 		}
diff --git a/src/AKSRT/Widgets/TagCloudWidget.php b/src/AKSRT/Widgets/TagCloudWidget.php
index 466439f7..862a7341 100644
--- a/src/AKSRT/Widgets/TagCloudWidget.php
+++ b/src/AKSRT/Widgets/TagCloudWidget.php
@@ -139,7 +139,8 @@ class TagCloudWidget extends \WP_Widget {
 			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_count')); ?>" value="1" <?php checked(!empty($instance['show_count'])); ?>> <?php esc_html_e('显示数量', 'aksrt'); ?></label><br>
 			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('blank')); ?>" value="1" <?php checked(!empty($instance['blank'])); ?>> <?php esc_html_e('新窗口', 'aksrt'); ?></label><br>
 			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('fixed_width')); ?>" value="1" <?php checked(!empty($instance['fixed_width'])); ?>> <?php esc_html_e('固定宽度', 'aksrt'); ?></label><br>
-			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('hide_empty')); ?>" value="1" <?php checked(!empty($instance['hide_empty'])); ?>> <?php esc_html_e('隐藏空标签', 'aksrt'); ?></label>
+			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('hide_empty')); ?>" value="1" <?php checked(!empty($instance['hide_empty'])); ?>> <?php esc_html_e('隐藏空标签', 'aksrt'); ?></label><br>
+				<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('scale')); ?>" value="1" <?php checked(!empty($instance['scale'])); ?>> <?php esc_html_e('按数量缩放字号', 'aksrt'); ?></label>
 		</p>
 		<?php
 	}
@@ -155,6 +156,7 @@ class TagCloudWidget extends \WP_Widget {
 			'blank'       => !empty($new_instance['blank']) ? 1 : 0,
 			'fixed_width' => !empty($new_instance['fixed_width']) ? 1 : 0,
 			'hide_empty'  => !empty($new_instance['hide_empty']) ? 1 : 0,
+			'scale'       => !empty($new_instance['scale']) ? 1 : 0,
 		];
 	}
 }
diff --git a/src/AKSRT/Widgets/WidgetForumHotTopics.php b/src/AKSRT/Widgets/WidgetForumHotTopics.php
index aa14b29e..18eb5162 100644
--- a/src/AKSRT/Widgets/WidgetForumHotTopics.php
+++ b/src/AKSRT/Widgets/WidgetForumHotTopics.php
@@ -83,7 +83,7 @@ class WidgetForumHotTopics extends \WP_Widget {
 		$items = self::render_items_html($q, ($page - 1) * $count);
 		$html = $items !== '' ? '<ul class="aksrt-forum-widget__list">' . $items . '</ul>' : '';
 		if ($html === '' && $page === 1) {
-			$html = '<p class="aksrt-forum-widget__empty ajax-item">' . esc_html__('暂无话题', 'aksrt') . '</p>';
+			$html = function_exists('aksrt_get_ajax_null') ? aksrt_get_ajax_null(__('暂无话题', 'aksrt')) : '<p class="aksrt-forum-widget__empty ajax-item">' . esc_html__('暂无话题', 'aksrt') . '</p>';
 		}
 		$max_pages = max(1, (int) $q->max_num_pages);
 		$total = (int) $q->found_posts;
diff --git a/src/AKSRT/Widgets/WidgetForumRecentTopics.php b/src/AKSRT/Widgets/WidgetForumRecentTopics.php
index 2202bda8..c33caf8c 100644
--- a/src/AKSRT/Widgets/WidgetForumRecentTopics.php
+++ b/src/AKSRT/Widgets/WidgetForumRecentTopics.php
@@ -40,6 +40,7 @@ class WidgetForumRecentTopics extends \WP_Widget {
 	public function form($instance): void {
 		$title = !empty($instance['title']) ? $instance['title'] : __('最新话题', 'aksrt');
 		$count = !empty($instance['count']) ? (int) $instance['count'] : 5;
+			$plate = (int) ($instance['plate'] ?? 0);
 		?>
 		<p>
 			<label for="<?php echo esc_attr($this->get_field_id('title')); ?>"><?php esc_html_e('标题:', 'aksrt'); ?></label>
diff --git a/src/AKSRT/Widgets/WidgetLangSwitch.php b/src/AKSRT/Widgets/WidgetLangSwitch.php
index f9af963f..769d354d 100644
--- a/src/AKSRT/Widgets/WidgetLangSwitch.php
+++ b/src/AKSRT/Widgets/WidgetLangSwitch.php
@@ -1,5 +1,7 @@
 <?php
 /**
+ * Language switcher widget (Polylang / WPML / filter).
+ *
  * @package AKSRT
  */
 
@@ -9,57 +11,113 @@ defined('ABSPATH') || exit;
 
 class WidgetLangSwitch extends \WP_Widget {
 
-    public function __construct() {
-        parent::__construct(
-            'aksrt_lang_switch',
-            __('语言切换器', 'aksrt'),
-            ['description' => __('在侧栏显示多语言切换按钮。', 'aksrt')]
-        );
-    }
+	public function __construct() {
+		parent::__construct(
+			'aksrt_lang_switch',
+			__('语言切换器', 'aksrt'),
+			[
+				'description' => __('在侧栏显示多语言切换按钮。', 'aksrt'),
+				'classname'   => 'widget_aksrt_lang_switch',
+			]
+		);
+	}
 
-    public function widget($args, $instance): void {
-        $title = !empty($instance['title']) ? $instance['title'] : '';
-        $style = !empty($instance['style']) ? $instance['style'] : 'dropdown';
+	/**
+	 * @param array<string,mixed> $args
+	 * @param array<string,mixed> $instance
+	 */
+	public function widget($args, $instance): void {
+		$title = !empty($instance['title']) ? (string) $instance['title'] : '';
+		$style = sanitize_key((string) ($instance['style'] ?? 'dropdown'));
+		if (!in_array($style, ['dropdown', 'flags', 'inline'], true)) {
+			$style = 'dropdown';
+		}
+		$show_name = !isset($instance['show_name']) || !empty($instance['show_name']);
+		$hide_current = !empty($instance['hide_current']);
 
-        if (!function_exists('aksrt_has_multilingual') || !aksrt_has_multilingual()) return;
+		if (!function_exists('aksrt_has_multilingual') || !aksrt_has_multilingual()) {
+			if (current_user_can('manage_options')) {
+				echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+				echo '<div class="c-red muted-box mb10"><b>' . esc_html__('语言切换：', 'aksrt') . '</b>' .
+					esc_html__('未检测到多语言插件（Polylang/WPML）或可用语言不足。', 'aksrt') . '</div>';
+				echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+			}
+			return;
+		}
 
-        $html = function_exists('aksrt_render_language_switcher') ? aksrt_render_language_switcher($style) : '';
-        if (empty($html)) return;
+		// inline style: treat as flags row without dropdown chrome.
+		$render_style = $style === 'inline' ? 'flags' : $style;
+		$html = function_exists('aksrt_render_language_switcher') ? aksrt_render_language_switcher($render_style) : '';
+		if ($html === '') {
+			if (current_user_can('manage_options')) {
+				echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+				echo function_exists('aksrt_get_widget_null')
+					? aksrt_get_widget_null(__('暂无可用语言', 'aksrt')) // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+					: '<p class="widget-empty">' . esc_html__('暂无可用语言', 'aksrt') . '</p>';
+				echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+			}
+			return;
+		}
 
-        echo $args['before_widget'];
+		// Optional modifiers via wrapper classes.
+		$wrap = 'aksrt-lang-switch-widget style-' . esc_attr($style);
+		if (!$show_name) {
+			$wrap .= ' hide-name';
+		}
+		if ($hide_current) {
+			$wrap .= ' hide-current';
+		}
 
-        if ($title) {
-            echo $args['before_title'] . esc_html($title) . $args['after_title'];
-        }
+		echo $args['before_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+		if ($title !== '') {
+			echo $args['before_title'] . esc_html($title) . $args['after_title']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+		}
+		echo '<div class="' . esc_attr($wrap) . '">' . $html . '</div>'; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+		echo $args['after_widget']; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+	}
 
-        echo $html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+	/**
+	 * @param array<string,mixed> $instance
+	 */
+	public function form($instance): void {
+		$title = !empty($instance['title']) ? (string) $instance['title'] : '';
+		$style = !empty($instance['style']) ? (string) $instance['style'] : 'dropdown';
+		?>
+		<p>
+			<label for="<?php echo esc_attr($this->get_field_id('title')); ?>"><?php esc_html_e('标题（可选）:', 'aksrt'); ?></label>
+			<input class="widefat" id="<?php echo esc_attr($this->get_field_id('title')); ?>" name="<?php echo esc_attr($this->get_field_name('title')); ?>" type="text" value="<?php echo esc_attr($title); ?>">
+		</p>
+		<p>
+			<label for="<?php echo esc_attr($this->get_field_id('style')); ?>"><?php esc_html_e('样式:', 'aksrt'); ?></label>
+			<select class="widefat" id="<?php echo esc_attr($this->get_field_id('style')); ?>" name="<?php echo esc_attr($this->get_field_name('style')); ?>">
+				<option value="dropdown" <?php selected($style, 'dropdown'); ?>><?php esc_html_e('下拉菜单', 'aksrt'); ?></option>
+				<option value="flags" <?php selected($style, 'flags'); ?>><?php esc_html_e('国旗图标', 'aksrt'); ?></option>
+				<option value="inline" <?php selected($style, 'inline'); ?>><?php esc_html_e('横向排列', 'aksrt'); ?></option>
+			</select>
+		</p>
+		<p>
+			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('show_name')); ?>" value="1" <?php checked(!isset($instance['show_name']) || !empty($instance['show_name'])); ?>> <?php esc_html_e('显示语言名', 'aksrt'); ?></label><br>
+			<label><input type="checkbox" name="<?php echo esc_attr($this->get_field_name('hide_current')); ?>" value="1" <?php checked(!empty($instance['hide_current'])); ?>> <?php esc_html_e('隐藏当前语言', 'aksrt'); ?></label>
+		</p>
+		<p><small><?php esc_html_e('需要安装 Polylang 或 WPML 等多语言插件才能生效。', 'aksrt'); ?></small></p>
+		<?php
+	}
 
-        echo $args['after_widget'];
-    }
-
-    public function form($instance): void {
-        $title = !empty($instance['title']) ? $instance['title'] : '';
-        $style = !empty($instance['style']) ? $instance['style'] : 'dropdown';
-        ?>
-        <p>
-            <label for="<?php echo esc_attr($this->get_field_id('title')); ?>"><?php esc_html_e('标题（可选）:', 'aksrt'); ?></label>
-            <input class="widefat" id="<?php echo esc_attr($this->get_field_id('title')); ?>" name="<?php echo esc_attr($this->get_field_name('title')); ?>" type="text" value="<?php echo esc_attr($title); ?>">
-        </p>
-        <p>
-            <label for="<?php echo esc_attr($this->get_field_id('style')); ?>"><?php esc_html_e('样式:', 'aksrt'); ?></label>
-            <select class="widefat" id="<?php echo esc_attr($this->get_field_id('style')); ?>" name="<?php echo esc_attr($this->get_field_name('style')); ?>">
-                <option value="dropdown" <?php selected($style, 'dropdown'); ?>><?php esc_html_e('下拉菜单', 'aksrt'); ?></option>
-                <option value="flags" <?php selected($style, 'flags'); ?>><?php esc_html_e('国旗图标', 'aksrt'); ?></option>
-            </select>
-        </p>
-        <p><small><?php esc_html_e('需要安装 Polylang 或 WPML 等多语言插件才能生效。', 'aksrt'); ?></small></p>
-        <?php
-    }
-
-    public function update($new_instance, $old_instance): array {
-        $instance = [];
-        $instance['title'] = sanitize_text_field($new_instance['title'] ?? '');
-        $instance['style'] = in_array($new_instance['style'] ?? '', ['dropdown', 'flags'], true) ? $new_instance['style'] : 'dropdown';
-        return $instance;
-    }
+	/**
+	 * @param array<string,mixed> $new_instance
+	 * @param array<string,mixed> $old_instance
+	 * @return array<string,mixed>
+	 */
+	public function update($new_instance, $old_instance): array {
+		$style = sanitize_key((string) ($new_instance['style'] ?? 'dropdown'));
+		if (!in_array($style, ['dropdown', 'flags', 'inline'], true)) {
+			$style = 'dropdown';
+		}
+		return [
+			'title'        => sanitize_text_field((string) ($new_instance['title'] ?? '')),
+			'style'        => $style,
+			'show_name'    => !empty($new_instance['show_name']) ? 1 : 0,
+			'hide_current' => !empty($new_instance['hide_current']) ? 1 : 0,
+		];
+	}
 }
diff --git a/src/AKSRT/Widgets/WidgetMainPosts.php b/src/AKSRT/Widgets/WidgetMainPosts.php
index 8469ed6b..a42e3b1b 100644
--- a/src/AKSRT/Widgets/WidgetMainPosts.php
+++ b/src/AKSRT/Widgets/WidgetMainPosts.php
@@ -90,6 +90,29 @@ class WidgetMainPosts extends \WP_Widget {
 
 		ob_start();
 		// Outer wrapper only on page 1 full render handled by caller for ajax append items.
+		$mode = $style === 'card' ? 'card' : ($style === 'mini' ? 'mini' : 'list');
+		if (function_exists('aksrt_render_post')) {
+			$html = '';
+			$i = $start;
+			while ($q->have_posts()) {
+				$q->the_post();
+				$i++;
+				$html .= aksrt_render_post([
+					'mode' => $mode,
+					'context' => 'widget',
+					'show_thumb' => $show_thumb,
+					'show_meta' => $show_meta,
+					'show_excerpt' => $mode === 'list',
+					'show_number' => $show_number && $mode === 'mini',
+					'number_offset' => $show_number ? $i : 0,
+					'extra_class' => 'ajax-item',
+				]);
+			}
+			wp_reset_postdata();
+			return $html;
+		}
+
+		$placeholder = get_template_directory_uri() . '/assets/img/placeholder.svg';
 		$i = $start;
 		while ($q->have_posts()) {
 			$q->the_post();
@@ -101,7 +124,7 @@ class WidgetMainPosts extends \WP_Widget {
 				echo '<a class="aksrt-main-posts__card ajax-item" href="' . esc_url(get_permalink()) . '">';
 				echo '<div class="aksrt-main-posts__thumb' . ($thumb ? '' : ' is-empty') . '">';
 				if ($thumb) {
-					echo '<img src="' . esc_url($thumb) . '" alt="" loading="lazy" />';
+					echo '<img class="aksrt-lazy lazyload" data-src="' . esc_url($thumb) . '" src="' . esc_url($placeholder) . '" alt="" loading="lazy" />';
 				}
 				echo '</div>';
 				echo '<div class="aksrt-main-posts__body">';
@@ -122,7 +145,7 @@ class WidgetMainPosts extends \WP_Widget {
 				if ($show_thumb) {
 					echo '<span class="aksrt-main-posts__thumb mini' . ($thumb ? '' : ' is-empty') . '">';
 					if ($thumb) {
-						echo '<img src="' . esc_url($thumb) . '" alt="" loading="lazy" />';
+						echo '<img class="aksrt-lazy lazyload" data-src="' . esc_url($thumb) . '" src="' . esc_url($placeholder) . '" alt="" loading="lazy" />';
 					}
 					echo '</span>';
 				}
diff --git a/src/AKSRT/Widgets/WidgetPaidPosts.php b/src/AKSRT/Widgets/WidgetPaidPosts.php
index 8eef0742..e4a35b26 100644
--- a/src/AKSRT/Widgets/WidgetPaidPosts.php
+++ b/src/AKSRT/Widgets/WidgetPaidPosts.php
@@ -68,42 +68,59 @@ class WidgetPaidPosts extends \WP_Widget {
 		if (!$q->have_posts()) {
 			return '';
 		}
+		$placeholder = get_template_directory_uri() . '/assets/img/placeholder.svg';
 		ob_start();
 		while ($q->have_posts()) {
 			$q->the_post();
-			$price = (float) get_post_meta(get_the_ID(), '_aksrt_pay_price', true);
-			$credits = (int) get_post_meta(get_the_ID(), '_aksrt_credits_cost', true);
-			$thumb = get_the_post_thumbnail_url(get_the_ID(), 'thumbnail');
+			$pid = get_the_ID();
+			$price = (float) get_post_meta($pid, '_aksrt_pay_price', true);
+			$credits = (int) get_post_meta($pid, '_aksrt_credits_cost', true);
+			$thumb = get_the_post_thumbnail_url($pid, 'thumbnail');
+			if ($price > 0) {
+				$badge = '¥' . number_format($price, 2, '.', '');
+			} elseif ($credits > 0) {
+				$badge = sprintf(__('%d 积分', 'aksrt'), $credits);
+			} else {
+				$badge = __('付费', 'aksrt');
+			}
+			if (function_exists('aksrt_render_post')) {
+				$item = aksrt_render_post([
+					'mode'         => 'mini',
+					'context'      => 'widget',
+					'show_thumb'   => true,
+					'show_meta'    => true,
+					'show_excerpt' => false,
+					'extra_class'  => 'ajax-item aksrt-paid-posts__mini',
+				]);
+				if ($item !== '') {
+					echo '<div class="aksrt-paid-posts__item is-mini ajax-item">';
+					echo $item; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
+					echo '<span class="aksrt-paid-posts__price badge">' . esc_html($badge) . '</span>';
+					echo '</div>';
+					continue;
+				}
+			}
 			echo '<li class="aksrt-paid-posts__item ajax-item">';
 			if ($thumb) {
-				echo '<a class="aksrt-paid-posts__thumb" href="' . esc_url(get_permalink()) . '"><img src="' . esc_url($thumb) . '" alt="" loading="lazy" /></a>';
+				echo '<a class="aksrt-paid-posts__thumb" href="' . esc_url(get_permalink()) . '"><img class="aksrt-lazy lazyload" data-src="' . esc_url($thumb) . '" src="' . esc_url($placeholder) . '" alt="" loading="lazy" /></a>';
 			}
 			echo '<div class="aksrt-paid-posts__body">';
 			echo '<a class="aksrt-paid-posts__title" href="' . esc_url(get_permalink()) . '">' . esc_html(get_the_title()) . '</a>';
-			echo '<div class="aksrt-paid-posts__meta">';
-			if ($price > 0) {
-				echo '<span class="aksrt-paid-posts__price">¥' . esc_html(number_format($price, 2, '.', '')) . '</span>';
-			} elseif ($credits > 0) {
-				echo '<span class="aksrt-paid-posts__price">' . esc_html(sprintf(__('%d 积分', 'aksrt'), $credits)) . '</span>';
-			} else {
-				echo '<span class="aksrt-paid-posts__price">' . esc_html__('付费', 'aksrt') . '</span>';
-			}
-			echo '</div></div></li>';
+			echo '<div class="aksrt-paid-posts__meta"><span class="aksrt-paid-posts__price">' . esc_html($badge) . '</span></div>';
+			echo '</div></li>';
 		}
 		wp_reset_postdata();
 		return (string) ob_get_clean();
 	}
 
-	/**
-	 * @return array{html:string,paginate_html:string,has_more:bool,page:int,max_pages:int,total:int}
-	 */
 	public static function query_payload(array $instance, int $page = 1): array {
 		$page = max(1, $page);
 		$paginate = sanitize_key((string) ($instance['paginate'] ?? 'ajax'));
 		$count = max(1, min(20, (int) ($instance['count'] ?? 6)));
 		$q = new \WP_Query(self::build_query_args($instance, $page));
 		$items = self::render_items_html($q);
-		$html = $items !== '' ? '<ul class="aksrt-paid-posts">' . $items . '</ul>' : '';
+		$wrap_tag = (strpos($items, 'posts-mini') !== false || strpos($items, 'aksrt-paid-posts__mini') !== false) ? 'div' : 'ul';
+			$html = $items !== '' ? '<' . $wrap_tag . ' class="aksrt-paid-posts">' . $items . '</' . $wrap_tag . '>' : '';
 		if ($html === '' && $page === 1) {
 			$html = function_exists('aksrt_get_ajax_null')
 				? aksrt_get_ajax_null(__('暂无付费内容', 'aksrt'))
diff --git a/src/AKSRT/Widgets/WidgetProductOneline.php b/src/AKSRT/Widgets/WidgetProductOneline.php
index 81848bcd..d1ce7a17 100644
--- a/src/AKSRT/Widgets/WidgetProductOneline.php
+++ b/src/AKSRT/Widgets/WidgetProductOneline.php
@@ -15,7 +15,10 @@ class WidgetProductOneline extends WidgetProductList {
 		\WP_Widget::__construct(
 			'aksrt_product_oneline',
 			__('横滑商品', 'aksrt'),
-			['description' => __('AKSRT 单行横滑商品列表（AJAX 同源）。', 'aksrt')]
+			[
+				'description' => __('AKSRT 单行横滑商品（swiper-scroll，同源 product list）。', 'aksrt'),
+				'classname'   => 'widget_aksrt_product_oneline',
+			]
 		);
 	}
 
@@ -29,13 +32,21 @@ class WidgetProductOneline extends WidgetProductList {
 	}
 
 	public function form($instance): void {
-		$instance = wp_parse_args($instance, ['style' => 'oneline', 'paginate' => 'none']);
+		$instance = wp_parse_args($instance, [
+			'title'    => __('横滑商品', 'aksrt'),
+			'style'    => 'oneline',
+			'paginate' => 'none',
+			'per_page' => 8,
+		]);
 		parent::form($instance);
 	}
 
 	public function update($new_instance, $old_instance): array {
 		$out = parent::update($new_instance, $old_instance);
 		$out['style'] = 'oneline';
+		if (($out['paginate'] ?? '') === '') {
+			$out['paginate'] = 'none';
+		}
 		return $out;
 	}
 }