body, div {
	margin: 0; padding: 0
}
img{
	margin: 0; padding: 0; display: block; max-width: 100%; border: none;
}

.main {
	margin: 0 auto; padding: 0;  width: 750px; display: flex;
    flex-direction: column; align-items: center; font-size: 0; background-color: #002870;
}


.btn_group{
	background-color: #002870; width: 100%; 
	display: flex; justify-content: space-around; margin: 0; padding: 0;
}
.btn_group .btn1 {
	width: 365px; height: 74px; background-color: #fcc800; 
	color: #002870; font-family: '微软雅黑'; font-weight: bold; font-size: 34px; margin-top: 4px; margin-bottom: 4px
}


.icp{
	width: 750px; height: 80px; color: #fff; background-color: #000; font-size: 28px; text-align: center;
}


/* 遮罩层样式 */
.overlay {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, 0.70);
	display: flex;
	justify-content: center;
	align-items: center;
	z-index: 1000;
	opacity: 0;
	visibility: hidden;
	transition: all 0.4s ease;
}

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

/* 图片弹出层样式 */
.image-popup {
	background: white;
	border-radius: 15px;
	overflow: hidden;
	box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
	transform: scale(0.8);
	transition: transform 0.4s ease;
	position: relative;
	max-width: 90%;
	max-height: 90vh;
}

.overlay.active .image-popup {
	transform: scale(1);
}

.popup-image {
	max-width: 100%;
	max-height: 80vh;
	display: block;
	margin: 0 auto;
}

/* 关闭按钮样式 */
.close-btn {
	position: absolute;
	top: 15px;
	right: 15px;
	width: 40px;
	height: 40px;
	background: rgba(0, 0, 0, 0.6);
	border-radius: 50%;
	display: flex;
	justify-content: center;
	align-items: center;
	cursor: pointer;
	transition: all 0.3s ease;
	z-index: 10;
}

.close-btn:hover {
	background: #e74c3c;
	transform: rotate(90deg);
}

.close-btn i {
	color: white;
	font-size: 20px;
}

.popup-title {
	/* position: absolute; */
	bottom: 0;
	left: 0;
	width: 100%;
	background: rgba(255, 0, 0, 0.7);
	color: white;
	padding: 10px 0;
	text-align: center;
	font-size: 1.1rem;
}

@media screen and (max-width:750px) {
	.main { width: 100% }
	.btn_group .btn1 {
		width: 100%; height: 37px; background-color: #fcc800; 
		color: #002870; font-family: '微软雅黑'; font-weight: bold; font-size: 20px; margin-top: 4px; 
		margin-bottom: 4px
	}

	.icp{
		width: 100%; height: 60px; color: #fff; background-color: #000; font-size: 18px; 
		text-align: center; line-height: 50px
	}
}