.about_content{
	width: 100%;
	overflow: hidden;
	background-color: #fff;
}
.about_content h2{
	color: #000;
	font-size: 36px;
	text-align: center;
	margin-top: 60px;
}
@media only screen and (max-width:767px ) {
	.about_content h2{
		font-size: 30px;
	}
}
/*石化简介*/
.us_introduce{
	width:1050px;
	font-size: 12px;
	margin: 30px auto 0;
	line-height: 22px;
	text-align: center;
	color: #666;
}
.us_introduce a{
	display: block;
	color: #525252;
	cursor: pointer;
	width: 120px;
	height: 40px;
	border: 1px solid #525252;
	line-height: 38px;
	margin: 25px auto 0;
	transition: all 0.5s;
}
.us_introduce a:hover{
	background-color: #C8000F;
	color: #fff;
	border-color: #C8000F;
}
.about_us ul{
	width: 100%;
	overflow: hidden;
	text-align: center;
	margin: 75px 0 55px;
}
.about_us ul h1{
	font-size: 72px;
	font-weight: bold;
	font-family: "arial, helvetica, sans-serif";
	color: #c8000f;
	margin-bottom: 5px;
}
.about_us ul p{
	font-size: 16px;
	color: #666666;
}
@media only screen and (max-width:767px ) {
	.us_introduce{
		width:100%;
	}
	.us_introduce a{
		height: 30px;
		line-height: 28px;
	}
	.about_us ul h1{
		font-size: 30px;
		margin-bottom: 5px;
	}
	.about_us ul{
		margin: 35px 0 25px;
	}
}
@media only screen and (min-width:768px ) {
	.us_introduce{
		width:100%;
	}
}
@media only screen and (min-width:992px ) {
	.us_introduce{
		width:100%;
	}
}
@media only screen and (min-width:1200px ) {
	.us_introduce{
		width:1050px;
	}
}
/*发展历程*/
.about_course{
	width: 100%;
	height: 500px;
	overflow: hidden;
	background:url(../img/course.jpg) no-repeat top center;
	background-size: 100%;
}
.us_course{
	width: 100%;
	height: 100%;
	background-color: rgba(0,0,0,0.43);
}
.us_course .container{
	height: 100%;
	position: relative;
}
.course_banner{
	width: 100%;
	overflow: hidden;
	margin-top: 90px;
	padding: 0 40px;
}
.course_banner li{
	width: 100%;
	overflow: hidden;
	display: none;
}
.course_banner li:first-of-type{
	display: block;
}
.course_banner .course_img{
	width: 285px;
	overflow: hidden;
	border: 5px solid #fff;
	margin: 0 40px 0 20px;
	float: left;
}
.course_img img{
	width: 100%;
	transition: all 0.5s;
}
.course_banner .course_text{
	width: calc(100% - 345px);
	float: left;
	overflow: hidden;
	color: #fff;
	font-size: 14px;
	line-height: 25px;
}
.course_text h1{
	height: 100px;
	font-family: arial;
	font-weight: bold;
	font-size: 60px;
	line-height: 100px;
}
.course_text h1 span{
	font-size: 50px;
	position: relative;
	left: 10px;
	top: -4px;
}
.course_banner:hover img{
	transform: scale(1.1);
}
.course_nav{
	width: 100%;
	overflow: hidden;
	margin-top: 85px;
}
.course_nav .course_prev,.course_nav .course_next{
	border: 2px solid #fff;
	width: 40px;
	height: 40px;
	border-radius: 20px;
	position: relative;
	float: left;
	cursor: pointer;
}
.course_prev img,.course_next img{
	width: 16px;
	position: absolute;
	top: 50%;
	left: 50%;
	margin-top: -8px;
	margin-left: -8px;
}
.course_prev img{
	transform: rotate(180deg);
}
.course_year{
	width: calc(100% - 80px);
	overflow: hidden;
	float: left;
	margin-top: 10px;
}
.course_year ul{
	overflow: hidden;
	position: relative;
	left: 0px;
}
.course_year li{
	width: 160px;
	overflow: hidden;
	float: left;
	cursor: pointer;
	opacity: 0.58;
}
.course_year li .course_icon{
	width: 100%;
	height: 20px;
	margin-bottom: 15px;
}
.course_year li h3{
	text-align: center;
	color: #fff;
	font-size: 20px;
}
.course_year .line{
	width: calc(50% - 10px);
	height: 2px;
	background-color: #fff;
	float: left;
	margin-top: 9px;
}
.course_year .yuan{
	width: 20px;
	height: 20px;
	border-radius: 10px;
	float: left;
	border: 1px solid #fff;
}
.course_year li.year_now{
	opacity: 1;
}
.course_year li.year_now .yuan{
	background-color: #fff;
}
.course_year li:hover{
	opacity: 1;
}
.course_year li:hover .yuan{
	background-color: #fff;
}
@media only screen and (max-width:767px ) {
	.about_course{
		height: 580px;
		background-size: auto 100%;
	}
	.course_banner{
		width: 100%;
		overflow: hidden;
		margin-top: 20px;
		padding: 0;
	}
	.course_banner .course_img{
		width: 100%;
		overflow: hidden;
		border: 5px solid #fff;
		margin: 0 0 20px;
		float: none;
	}
	.course_banner .course_text{
		width:100%;
		float: none;
		font-size: 12px;
		line-height: 20px;
		height: 210px;
		overflow: hidden;
	}
	.course_text h1{
		height: 30px;
		font-family: arial;
		font-weight: bold;
		font-size: 30px;
		line-height: 30px;
	}
	.course_text h1 span{
		font-size: 24px;
		position: relative;
		left: 5px;
		top: -3px;
	}
	.course_nav{
		width: 100%;
		overflow: hidden;
		margin-top: 15px;
	}
	.course_nav .course_prev,.course_nav .course_next{
		border: 1px solid #fff;
		width: 30px;
		height: 30px;
		border-radius: 15px;
	}
	.course_year{
		width: calc(100% - 60px);
		overflow: hidden;
		float: left;
		margin-top: 5px;
	}
	.course_year li h3{
		font-size: 16px;
	}
	.course_year li .course_icon{
		width: 100%;
		height: 20px;
		margin-bottom: 5px;
	}
}
@media only screen and (min-width:768px ) {
	.course_text h1{
		height: 40px;
		font-size: 40px;
		line-height: 40px;
	}
	.course_text h1 span{
		font-size: 32px;
		top: -4px;
	}
	.course_nav{
		width: calc(100% - 2px);
		margin-top: 0;
		position: absolute;
		bottom: 20px;
	}
	.course_year li{
		width: 164px;
	}
}
@media only screen and (min-width:992px ) {
	.course_year li{
		width: 223px;
	}
	.course_text h1{
		height: 100px;
		font-size: 60px;
		line-height: 100px;
	}
	.course_nav{
		width: 100%;
		margin-top: 0;
		position: absolute;
		bottom: 35px;
	}
	.course_text h1 span{
		font-size: 50px;
		top: -4px;
	}
}
@media only screen and (min-width:1200px ) {
	.course_year li{
		width: 279px;
	}
}
/*尊重人才  科技创新*/
.about_title{
	width: 505px;
	overflow: hidden;
	margin: 0 auto;
}
.about_title p{
	text-align: center;
	color: #8b8b8b;
	font-size: 12px;
	margin-top: 10px;
}
.us_idea{
	width: 100%;
	height: auto;
	overflow: hidden;
	margin-top: 45px;
}
.us_idea>li{
	height: 450px;
	overflow: hidden;
}
.us_idea>li:first-of-type{
	background: url(../img/images/idea_left_03.jpg) no-repeat top center;
	background-size: 100% auto;
	color: #fff;
	line-height: 22px;
	padding: 95px 55px;
}
.us_idea h3{
	font-size: 30px;
	margin-bottom: 25px;
}
.us_idea span{
	margin-top: 75px;
	display: block;
	width: 120px;
	height: 40px;
	line-height: 38px;
	color: #fff;
	border: 1px solid #fff;
	text-align: center;
}
.us_idea>li:first-of-type:hover span{
	background-color: #fff;
	color: #C8000F;
	border-color: #C8000F;
}
.us_idea a{
	display: block;
	width: 100%;
	height: 100%;
	overflow: hidden;
	text-align: left;
	color: #fff;
}
.us_culture ul{
	width: 100%;
	height: 50%;
}
.us_culture ul li{
	width: 50%;
	height: 100%;
	float: left;
	overflow: hidden;
	position: relative;
	cursor: pointer;
}
.us_culture ul li img:first-of-type{
	width: 100%;
	transition: all 0.5s;
}
.us_culture ul li img:last-of-type{
	position: absolute;
	left: 0;
	top: 50%;
	margin-top: -11.5px;
}
.us_culture ul:last-of-type .culture_img{
	float: right;
}
.us_culture ul:first-of-type li img:last-of-type{
	position: absolute;
	left: auto;
	right: 0;
	top: 50%;
	margin-top: -11.5px;
	transform: rotate(180deg);
}
.us_culture ul li.culture_text{
	background-color: #f6f6f6;
	padding: 60px 40px;
	line-height: 22px;
	color: #666;
}
.culture_text h4{
	color: #c8000f;
	font-size: 26px;
	margin-bottom: 10px;
}
.us_culture ul:hover li img:first-of-type{
	transform: scale(1.1);
}
@media only screen and (max-width:767px ) {
	.about_title{
		width: 100%;
	}
	.us_idea>li{
		height: auto;
		margin-bottom: 15px;
	}
	.us_idea>li:first-of-type{
		line-height: 20px;
		padding: 20px;
	}
	.us_idea h3{
		font-size: 24px;
		margin-bottom: 10px;
	}
	.us_idea span{
		margin-top: 15px;
		height: 30px;
		line-height: 28px;
	}
	.us_culture ul li{
		width: 100%;
		height: auto;
		float: none;
	}
	.us_culture ul li.culture_text{
		padding: 20px;
		line-height: 20px;
	}
}
@media only screen and (min-width:768px ) {
	
}
@media only screen and (min-width:992px ) {
	.us_idea>li{
		height: 364px;
	}
	.us_culture ul li.culture_text{
		padding: 50px 30px;
		line-height: 20px;
	}
	.us_idea span{
		margin-top: 55px;
	}
	.us_idea>li:first-of-type{
		line-height: 20px;
		padding: 75px 55px;
	}
}
@media only screen and (min-width:1200px ) {
	.us_idea>li{
		height: 450px;
	}
	.us_culture ul li.culture_text{
		padding: 60px 40px;
		line-height: 22px;
	}
	.us_idea span{
		margin-top: 75px;
	}
	.us_idea>li:first-of-type{
		line-height: 22px;
		padding: 95px 55px;
	}
}
/*荣誉资质*/
.about_qualifications{
	margin-top: 55px;
	width: 100%;
	height: 585px;
	overflow: hidden;
	background: url(../img/images/qualifications_bg_02.jpg) no-repeat top center;
	background-size: 100%;
}
.about_qualifications h2{
	color: #fff;
}
.certificate_menu{
	width: 696px;
	height: 35px;
	overflow: hidden;
	margin: 30px auto 45px;
	line-height: 35px;
	font-size: 14px;
	color: #636363;
}
.certificate_menu li{
	width: 100px;
	height: 100%;
	text-align: center;
	float: left;
	margin: 0 8px;
	background-color: #fff;
	border-radius: 5px;
	cursor: pointer;
}
.certificate_menu li.certificate_now{
	font-weight: bold;
	background-color: #c8000f;
	color: #fff;
}
.certificate_menu li:hover{
	font-weight: bold;
	background-color: #c8000f;
	color: #fff;
}
.certificate_banner{
	width: 100%;
	overflow: hidden;
	position: relative;
}
.certificate_banner img{
	width: 100%;
}
.certificate_banner .swiper-container{
	width: calc(100% - 100px);
}
.certificate_banner .certificate_box{
	width: 100%;
	overflow: hidden;
	display: none;
}
.certificate_banner .certificate_box:first-of-type{
	display: block;
}
.certificate_banner .swiper-pagination{
	display: none;
}
.certificate_banner .swiper-pagination-bullet-active {
    opacity: 1;
    background: #c8000f;
}
.certificate_banner .swiper-button-next,
.certificate_banner .swiper-button-prev {
	position: absolute;
	top: 50%;
	width: 27px;
	height: 44px;
	margin-top: -22px;
	z-index: 10;
	cursor: pointer;
	background-size: 27px 44px;
	background-position: center;
	background-repeat: no-repeat
}
.certificate_banner .swiper-button-next.swiper-button-disabled{
	opacity: 1;
	cursor: auto;
	pointer-events: none;
	background-image: url(../img/right_white.png);
}
.certificate_banner .swiper-button-prev.swiper-button-disabled {
	opacity: 1;
	cursor: auto;
	pointer-events: none;
	background-image: url(../img/left_white.png);
}
.certificate_banner .swiper-button-prev,
.certificate_banner .swiper-container-rtl .swiper-button-next {
	background-image: url(../img/left_red.png);
	left: 0px;
	right: auto
}
.certificate_banner .swiper-button-next,
.certificate_banner .swiper-container-rtl .swiper-button-prev {
	background-image: url(../img/right_red.png);
	right: 0px;
	left: auto
}
@media only screen and (max-width:767px ) {
	.certificate_menu{
		width: 100%;
		font-size: 12px;
	}
	.certificate_menu li{
		width: calc(25% - 10px);
		margin: 0 5px;
	}
	.about_qualifications{
		margin-top: 25px;
	}
}
@media only screen and (min-width:768px ) {
	
}
@media only screen and (min-width:992px ) {
	
}
@media only screen and (min-width:1200px ) {
	
}
/*党建文化*/
.party_building .about_title{
	width: 380px;
}
.partyBuilding_box{
	width: 100%;
	overflow: hidden;
	margin: 55px 0 65px;
}
.partyBuilding_box>li:first-of-type{
	float: right;
	padding-left: 12.5px;
}
.partyBuilding_box>li:last-of-type{
	padding-right: 12.5px;
}
.partyBuilding_banner{
	width: 100%;
	overflow: hidden;
}
.partyBuilding_banner img{
	width: 100%;
}
.partyBuilding_banner .swiper-pagination-bullet {
    width: 15px;
    height: 15px;
    display: inline-block;
    border-radius: 100%;
    background: #fff;
    opacity: 0.8;
}
.partyBuilding_banner .swiper-pagination-bullet-active {
    opacity: 1;
    background: #c8000f;
}
.partyBuilding_box ul{
	width: 100%;
	overflow: hidden;
	border-bottom: 1px solid #ddd;
	padding: 27px 20px 27px 0;
}
.partyBuilding_box ul:hover{
	background-color: #f7f7f7;
	cursor: pointer;
}
.partyBuilding_box .partyBuilding_time{
	width: 80px;
	overflow: hidden;
	text-align: center;
	font-size: 12px;
	color: #8b8b8b;
	float: left;
}
.partyBuilding_time h3{
	font-size: 40px;
	color: #c8000f;
	font-weight: bold;
}
.partyBuilding_box .partyBuilding_text{
	width: calc(100% - 80px);
	color: #666;
	float: right;
	line-height: 18px;
}
.partyBuilding_text h4{
	color: #333;
	font-size: 16px;
	font-weight: bold;
	margin-bottom: 10px;
}
@media only screen and (max-width:767px ) {
	.party_building .about_title{
		width: 100%;
	}
	.partyBuilding_box ul{
		width: 100%;
		overflow: hidden;
		border-bottom: 1px solid #ddd;
		padding: 16px 5px 16px 0;
		font-size: 12px;
	}
	.partyBuilding_box{
		width: 100%;
		overflow: hidden;
		margin: 25px 0 35px;
	}
	.partyBuilding_box>li:first-of-type{
		padding-left: 0px;
	}
}
@media only screen and (min-width:768px ) {
	.partyBuilding_box ul{
		width: 100%;
		overflow: hidden;
		border-bottom: 1px solid #ddd;
		padding: 20px 20px 20px 0;
	}
	.partyBuilding_box .partyBuilding_text{
		padding-top: 10px;
	}
	.partyBuilding_box>li:first-of-type{
		padding-left: 0px;
	}
}
@media only screen and (min-width:992px ) {
	.partyBuilding_box ul{
		width: 100%;
		overflow: hidden;
		border-bottom: 1px solid #ddd;
		padding: 16px 20px 16px 0;
	}
	.partyBuilding_box .partyBuilding_text{
		padding-top: 0px;
	}
	.partyBuilding_box>li:first-of-type{
		padding-left: 12.5px;
	}
}
@media only screen and (min-width:1200px ) {
	.partyBuilding_box ul{
		width: 100%;
		overflow: hidden;
		border-bottom: 1px solid #ddd;
		padding: 27px 20px 27px 0;
	}
}