.collapsible-menu{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif;max-width:100%;background-color:#fff;border-radius:8px;box-shadow:0 2px 10px rgb(0 0 0 / .08);margin-bottom:20px;overflow:hidden}.collapsible-menu .menu-item{position:relative;border-bottom:1px solid #f0f0f0;transition:background-color 0.3s ease}.collapsible-menu .menu-item:last-child{border-bottom:none}.menu-item-content{display:flex;align-items:center;position:relative}.collapsible-menu .menu-link{flex:1;display:block;padding:14px 16px;color:#333;text-decoration:none;font-size:15px;transition:color 0.3s ease}.collapsible-menu .menu-item:hover>.menu-item-content>.menu-link{color:#0073aa}.collapsible-menu .current-menu-item>.menu-item-content>.menu-link{color:#0073aa;font-weight:600}.toggle-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative}.toggle-btn:before{content:"+";font-size:20px;color:#777;transition:transform 0.3s ease,color 0.3s ease}.toggle-btn.active:before{content:"−";color:#0073aa}.collapsible-menu .sub-menu{display:none;background-color:#f9f9f9;padding:5px 0}.collapsible-menu .sub-menu.active{display:block}.collapsible-menu .sub-menu .menu-item{border-bottom:none}.collapsible-menu .sub-menu .menu-link{padding:10px 16px 10px 30px;font-size:14px;color:#555}.collapsible-