fix: 修复浮动按钮显示异常问题

- 修复 fabtn_toggle_sides 按钮时隐时现的问题
- 为隐藏状态添加 pointer-events: none，防止误触
- 优化按钮显示/隐藏的过渡动画
- 修复设置按钮显示逻辑，改为只有明确设置为 true 时才显示
- 添加 !important 确保隐藏样式优先级

header.php

@@ -1321,7 +1321,7 @@ if (apply_filters('argon_page_background_url', get_option('argon_page_background
 
 	</button>
 
-	<button id="fabtn_toggle_blog_settings_popup" class="btn btn-icon btn-neutral fabtn shadow-sm" type="button" <?php if (get_option('argon_fab_show_settings_button') == 'false') echo " style='display: none;'";?> aria-label="Open Blog Settings Menu" tooltip="<?php _e('设置', 'argon'); ?>">
+	<button id="fabtn_toggle_blog_settings_popup" class="btn btn-icon btn-neutral fabtn shadow-sm" type="button" <?php if (get_option('argon_fab_show_settings_button') != 'true') echo " style='display: none !important;'";?> aria-label="Open Blog Settings Menu" tooltip="<?php _e('设置', 'argon'); ?>">
 
 		<span class="btn-inner--icon"><i class="fa fa-cog"></i></span>
 

style.css

@@ -3211,15 +3211,22 @@ html.is-home.banner-as-cover #float_action_buttons.hidden {
 	height: 30px !important;
 	transform: translateY(8px) scale(0.9);
 	opacity: 0;
+	pointer-events: none;
 	transition: 
 		transform var(--animation-normal) var(--ease-emphasized-decelerate),
-		opacity var(--animation-normal) var(--ease-standard);
+		opacity var(--animation-normal) var(--ease-standard),
+		pointer-events 0s var(--animation-normal);
 }
 
 #float_action_buttons:hover #fabtn_toggle_sides {
 	height: 30px !important;
 	transform: translateY(0px) scale(1);
 	opacity: 1;
+	pointer-events: auto;
+	transition: 
+		transform var(--animation-normal) var(--ease-emphasized-decelerate),
+		opacity var(--animation-normal) var(--ease-standard),
+		pointer-events 0s 0s;
 }
 
 #fabtn_reading_progress {