.download_banner_bg{
	background: url(../img/download_banner_bg.jpg) no-repeat;
	min-width: 1000px;
	height: 70vh;
	display: flex;
	align-items: center;
	background-size: 100%;
}
.download_banner_person{
	background: url(../img/download_banner_person.png) no-repeat bottom;
	width: 45%;
	height: 100%;
	background-size: contain;
	margin-left: 50px;
}
.banner_first_text{
	font-size: 44px;
	font-weight: bold;
	color: #333;
	letter-spacing: 20px;
}
.banner_second_text{
	font-size: 20px;
	color: #555;
	letter-spacing: 10px;
	margin-top: 15px;
}
.banner_checkmark_block{
	display: flex;
	align-items: center;
	color: #003277;
	font-size: 16px;
	letter-spacing: 2px;
	margin-top: 50px;
	margin-right: 20px;
}
.download_banner_checkmark{
	background: url(../img/download_banner_checkmark.png) no-repeat;
	width: 19px;
	height: 19px;
	margin-right: 8px;
}
.banner_checkmark_row{
	display: flex;
	align-items: center;
}
.banner_download_button{
	background-image: linear-gradient(to right, #1bed77, #00d2ff);
	box-shadow: 0 0 10px 5px rgba(255, 255, 255, 0.6);
	color: #fff;
	font-size: 28px;
	font-weight: bold;
	border-radius: 10px;
	width: 300px;
	height: 70px;
	line-height: 70px;
	margin-top: 40px;
	cursor: pointer;	
	text-align: center;
    border: none;
}
.banner_download_button:hover{
	opacity: 0.75;
	box-shadow: none;
	font-size: 28px;
	color: #ffee96;
}
.download_cont_bg{
	background: url(../img/download_cont_bg.jpg) no-repeat;
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	z-index: -1;
	background-size: 100%;
}
.download_introduction_cont{
	width: 1100px;
	margin: 0 auto;
	display: flex;
	justify-content: center;
}
.download_introduction_flexblock{
	display: flex;
	margin-top: 30px;
}
.download_introduction_first_1{
	background: url(../img/download_introduction_first_1.png) no-repeat;
	width: 432px;
	height: 256px;
	background-size: contain;
}
.download_introduction_flexblock .introduction_first_textbg{
	background: rgba(255,255,255,0.35);
	width: 432px;
	padding: 20px 30px;
	box-sizing: border-box;
}
.introduction_first_lable{
	background: url(../img/download_introduction_first_lable.png) no-repeat;
	min-width: 160px; 
	height: 47px;
	position: relative;
	background-size: 100% 100%;
}
.introduction_first_textblock{
	display: flex;
	align-items: center;
	margin: 14px 0;
}
.introduction_first_lable_text{
	color: #fff;
	font-size: 18px;
	position: absolute;
	top: 11px;
	right: 19px;
}
.introduction_first_text{
	height: 25px;
	border-bottom: 1px dashed #2486ff;
	font-size: 16px;
	color: #333;
	letter-spacing: 2px;
	display: inline-block;
	padding: 0 5px;
}
.download_introduction_gridblock{
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 20px;
	margin-top: 30px;
}
.download_introduction_gridblock .introduction_first_textbg{
	background: rgba(255,255,255,0.35);
	width: 432px;
	padding: 20px;
	box-sizing: border-box;
}
.download_introduction_first_2{
	background: url(../img/download_introduction_first_2.png) no-repeat;
	width: 432px;
	height: 256px;
	background-size: contain;
}
.download_introduction_first_3{
	background: url(../img/download_introduction_first_3.png) no-repeat;
	width: 432px;
	height: 256px;
	background-size: contain;
}
.download_introduction_first_4{
	background: url(../img/download_introduction_first_4.png) no-repeat;
	width: 432px;
	height: 256px;
	background-size: contain;
}
.download_introduction_first_5{
	background: url(../img/download_introduction_first_5.png) no-repeat;
	width: 432px;
	height: 256px;
	background-size: contain;
}
.download_introduction_first_title{
	background: url(../img/download_introduction_first_title.png) no-repeat;
	width:320px;
	height: 44px;
	background-size: contain;
	margin: 30px auto 20px;
}
.download_introduction_first_righticon{
	background: url(../img/download_introduction_first_righticon.png) no-repeat;
	width: 47px;
	height: 36px;
	background-size: contain;
}
.download_introduction_centerblock{
	display: flex;
	align-items: center;
}
.download_introduction_centerblock .introduction_first_textbg{
	background: rgba(255,255,255,0.35);
	width: 432px;
	padding: 20px 30px;
	box-sizing: border-box;
}
/* xin */
.teacher_page{
	margin-bottom: 55px;
}
.teacher_grid_0{
	display: grid;
	grid-template-columns: 1fr 2fr;
	gap: 0;
}
.teacher_grid_1{
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 20px;
}
.teacher_grid_2{
	display: grid;
	grid-template-columns: 2fr 1fr;
	gap: 20px;
}
.teacher_grid_3{
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
}
.teacher_page .black_one{
	position: relative;
	background: #000;
	border-radius: 20px;
	overflow: hidden;
}
.black_one_170{
	height: 170px;
	margin-bottom: 20px;
}
.black_one_360{
	height: 360px;
}
.teacher_page .title{
	position: absolute;
	top: 9px;
	left: 53px;
	font-size: 19px;
	color: #333;
	font-weight: bold;							
}
.teacher_page_one{
	width: 100%;
	position: relative;						
	margin-bottom:20px;
}
.teacher_page .title_second{
	font-size: 18px;
	color: #fff;
}
.teacher_page .text_cont{
	margin-top: 15px;
	margin-right: 30px;
	font-size: 12px;
	color: rgba(255, 255, 255, 0.55);
	line-height: 18px;
}
.teacher_page img{
	position: absolute;							
}
.teacher_page .text_block{
	position: absolute;
	top: 30px; 
	left: 30px;
}
.teacher_first_title{
	background: url(../img/teacher_first_title.png) no-repeat;
	width: 476px;
	height: 44px;
	background-size: contain;
	margin: 50px auto 20px;
}
.teacher_first_1_img{
	right: 0;
	bottom: 0;
	width: 250px;
}
.teacher_first_2_img{
	right: 0;
	bottom: 0;
	width: 414px;
	height: 100%;
}
.teacher_first_3_text{
	position: absolute;
	left: 42px;
	top: 171px;
	color: #fff;
	z-index: 1;
}
.teacher_first_3_img{
	right: 0;
	bottom: 0;
	width: 270px;
}
.teacher_second_title{
	background: url(../img/teacher_second_title.png) no-repeat;
	width: 476px;
	height: 44px;
	background-size: contain;
	margin: 50px auto 20px;
}
.teacher_second_2{
	background: url(../img/teacher_second_2.jpg) no-repeat;
	height: 360px;
	background-size: cover;
	background-position: center;
	border-radius: 20px;
	position: relative;
}
.teacher_second_lable{
	background: url(../img/teacher_second_lable.png) no-repeat;
	width: 200px;
	height: 45px;
	background-size: contain;
	position: absolute;
	top: 20px;
	left: 30px;
	z-index: 1;
}
.teacher_second_labletext{
	color: #073c8f;
	font-size: 17px;
	position: absolute;
	left: 63px;
	top: 10px;
}
.teacher_second_1_img{
	right: 0;
	bottom: 0;
	width: 190px;
	height: 230px;
}
.teacher_third_title{
	background: url(../img/teacher_third_title.png) no-repeat;
	width: 476px;
	height: 44px;
	background-size: contain;
	margin: 50px auto 20px;
}
.teacher_third_1_img{
	right: 0;
	bottom: 0;
	width: 80%;
	height: 208px;
}
.teacher_third_2_img{
	right: 0;
	bottom: 0;
	width: 100%;
	height: 220px;
}
.teacher_third_3_img{
	right: 0;
	bottom: 0;
	width: 100%;
	height: 220px;
}
.teacher_fourth_title{
	background: url(../img/teacher_fourth_title.png) no-repeat;
	width: 476px;
	height: 44px;
	background-size: contain;
	margin: 50px auto 20px;
}
.teacher_fourth_1_img, .teacher_fourth_2_img, .teacher_fourth_3_img{
	right: 0;
	bottom: 0;
	width: 100%;
	height: 200px;
}
.teacher_fifth_title{
	background: url(../img/teacher_fifth_title.png) no-repeat;
	width: 476px;
	height: 44px;
	background-size: contain;
	margin: 50px auto 20px;
}
.teacher_fifth_textcont{
	color: #fff;
	padding: 30px 50px;
}
.teacher_fifth_textcont .fifth_title{
	font-size: 17px;
}
.teacher_fifth_textcont .fifth_text_cont{
	font-size: 12px;
	color: rgba(255, 255, 255, 0.55);
	margin-top: 7px;
	margin-bottom: 15px;
}
.teacher_fifth_block{
	position: relative;
	background: #000;
	margin-top: 20px;
	border-radius:0 20px 20px 0;
	height: 320px;
}
.teacher_fifth_1_img{
	background: url(../img/teacher_fifth_1.jpg) no-repeat;
	height: 295px;
	background-size: contain;
	margin: 10px;
	border-radius: 15px;
}
.teacher_sixth_title{
	background: url(../img/teacher_sixth_title.png) no-repeat;
	width: 476px;
	height: 44px;
	background-size: contain;
	margin: 50px auto 20px;
}
.teacher_sixth_1_img{
	right: 0;
	bottom: 0;
	width: 230px;
}
.teacher_sixth_2_img{
	right: 0;
	bottom: 0;
	width: 215px;
}
.teacher_sixth_3_img{
	right: 0;
	bottom: 0;
	width: 225px;	
}
.teacher_sixth_4_img{
	right: 0;
	bottom: 0;
	width: 215px;
}