.nav_sp {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	height: 60px;
	background: #444;
	border-bottom: 1px solid #666;
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 0 20px;
	z-index: 1000;
}

.nav_sp .logo {
	width:290px;
	height:40px;
	padding-top:3px;
}

.menu-toggle {
	width: 30px;
	height: 24px;
	position: relative;
	cursor: pointer;
}

.menu-toggle span {
	position: absolute;
	left: 0;
	width: 100%;
	height: 4px;
	background: #8ee3ff;
	transition: all 0.3s ease;
	border-radius: 99rem;
}

.menu-toggle span:nth-child(1) {
	top: 0;
}

.menu-toggle span:nth-child(2) {
	top: 50%;
    transform: translateY(-50%);
}

.menu-toggle span:nth-child(3) {
	bottom: 0;
}

.menu-toggle.active span:nth-child(1) {
	top: 50%;
	transform: translateY(-50%) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
	opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
	bottom: 50%;
	transform: translateY(50%) rotate(-45deg);
}

.menu-overlay {
	position: fixed;
	top: 60px;
	left: 0;
	right: 0;
	bottom: 0;
	background: rgba(0, 0, 0, 0.5);
	opacity: 0;
	visibility: hidden;
	transition: all 0.3s ease;
	z-index: 998;
}

.menu-overlay.active {
	opacity: 1;
	visibility: visible;
}

.menu {
	position: fixed;
	top: 60px;
	left: 0;
	right: 0;
	background: #444;
	max-height: 0;
	overflow: hidden;
	transition: max-height 0.4s ease;
	z-index: 999;
}

.menu.active {
	max-height: calc(100vh - 60px);
	overflow-y: auto;
}

.menu-item {
	border-bottom: 1px solid #555;
}

.menu-item-header {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 18px 20px 18px 40px;
	color: #fff;
	text-decoration: none;
	cursor: pointer;
	transition: background 0.2s;
}

.menu-item-header:hover {
	background: #39475e;
}

.menu-item-title {
	font-size: 120%;
}

.submenu-toggle {
	width: 20px;
	height: 20px;
	position: relative;
	flex-shrink: 0;
}

.submenu-toggle::before,
.submenu-toggle::after {
    content: '';
	position: absolute;
	background: #8ee3ff;
	transition: all 0.3s ease;
	border-radius: 1px;
	top: 50%;
	left: 50%;
}

.submenu-toggle::before {
	width: 14px;
	height: 3px;
	transform: translate(-50%, -50%);
}

.submenu-toggle::after {
	width: 3px;
	height: 14px;
	transform: translate(-50%, -50%);
}

.menu-item.active .submenu-toggle::before {
	width: 16px;
	transform: translate(-50%, -50%) rotate(45deg);
}

.menu-item.active .submenu-toggle::after {
	width: 16px;
	height: 3px;
	transform: translate(-50%, -50%) rotate(-45deg);
}

.submenu {
	max-height: 0;
	overflow: hidden;
	background: #2f2f2f;
	transition: max-height 0.3s ease;
}

.menu-item.active .submenu {
	max-height: 500px;
}

.submenu-item {
	display: block;
	padding: 14px 20px 14px 60px;
	color: #fff;
	text-decoration: none;
	font-size:110%;
	border-bottom: 1px solid #3a3a3a;
	transition: background 0.2s;
}

.submenu-item:hover {
	background: #3a3a3a;
}

.submenu-item:last-child {
	border-bottom: none;
}

.content {
	margin-top: 80px;
    padding: 20px;
}


@media screen and (min-width:1280px) {
	.nav_sp, .menu-overlay, .menu { display:none; }
}