fix(nav): align header user-card VIP CTA with check-in button

Drop navbar-cta/pill radius classes from the dropdown 开通会员 link and
force full-width 6px radius geometry to match the签到 button.

inc/helpers/aksrt-header-userbox.php

@@ -148,10 +148,11 @@ if (!function_exists('aksrt_header_payvip_bar')) :
 			return '';
 		}
 
+		// Match check-in CTA geometry (full width, 6px radius) — not top-nav navbar-cta chips.
 		return '<div class="mt10 em09 aksrt-header-payvip">'
-			. '<a class="pay-vip but radius4 payvip-icon btn-block navbar-cta" href="javascript:;" vip-level="1">'
+			. '<a class="pay-vip but block payvip-icon aksrt-header-payvip__cta" href="javascript:;" vip-level="1">'
 			. '<i class="fas fa-gem" aria-hidden="true"></i>'
-			. esc_html__('开通会员 尊享会员权益', 'aksrt')
+			. '<span>' . esc_html__('开通会员 尊享会员权益', 'aksrt') . '</span>'
 			. '</a></div>';
 	}
 endif;