.left .nav_item.active {
    background-color: #f7f7f7;
    color: #cd1f20;
    border-bottom: 2px solid pink;
}

.banner {
    width: 100%;
    height: 560px;
}

.banner img {
    width: 100%;
    height: 100%;
}

/* 升级 */
.upgrade {
    width: 100%;
    height: 817px;
    background-color: #e9eef2;
}

.upgrade .upgrade_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.upgrade .upgrade_main .top {
    width: 511px;
    height: 143px;
    margin: 57px auto 0;
}

.upgrade_main .top .inner_top {
    width: 368px;
    height: 104px;
    font-family: MicrosoftYaHei;
    font-size: 40px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    margin: 0 auto;
    letter-spacing: 0px;
    color: #5f616d;
    display: inherit;
}

.upgrade_main .top .inner_top .text {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.upgrade_main .top .inner_top .pass {
    text-align: center;
}

.upgrade_main .top .inner_bottom {
    width: 100%;
    height: 17px;
    display: inherit;
    font-size: 15px;
    font-weight: normal;
    font-stretch: normal;
    text-align: center;
    line-height: 30px;
    letter-spacing: 0px;
    color: #5f616d;
    margin-top: 15px;
}

.upgrade_main .bottom {
    display: flex;
    margin-top: 84px;
}

.upgrade_main .bottom p {
    font-size: 18px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 24px;
    letter-spacing: 0px;
    color: #5f616d;
}

.upgrade_main .bottom .btm_left {
    z-index: 99;
}

.upgrade_main .bottom .btm_left .part {
    width: 325px;
    height: 125px;
    margin-bottom: 42px;
}

.upgrade_main .bottom .btm_left .part p {
    position: relative;
    left: 29px;
    bottom: 45px;
}

.upgrade_main .bottom .btm_center {
    position: relative;
    top: 0;
    right: 95px;
    width: 742px;
    height: 427px;
    margin-top: 15px;
}

.upgrade_main .bottom .btm_center .video {
    position: absolute;
    top: 30px;
    left: 94px;
    width:562px;
    height:352px;
    background-color: #656566
}

.upgrade_main .bottom .btm_center .play {
    position: relative;
    left: 340px;
    bottom: 255px;
}

.upgrade_main .bottom .btm_right {
    position: relative;
    top: 0;
    right: 185px;
}

.upgrade_main .bottom .btm_right p {
    position: relative;
    left: 142px;
    bottom: 45px;
}

.upgrade_main .bottom .btm_right .part {
    width: 325px;
    height: 125px;
    margin-bottom: 42px;
}

.upgrade_main .bottom .btm_right .part:first-child {
    margin-top: 65px;
}

/* 助推器 */
.study_boost {
    width: 100%;
    height: 1660px;
    background: url(../imgs/bg1.png) no-repeat center;
    background-size: cover;
}

.study_boost_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.study_boost_main .title {
    width: 801px;
    height: 115px;
    font-family: MicrosoftYaHei;
    font-size: 40px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    text-align: center;
    margin: 39px auto 0;
    letter-spacing: 0px;
    color: #0efff1;
}
.study_boost_main .e_title {
    font-family: MicrosoftYaHei;
    font-size: 14px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 20px;
    text-align: center;
    margin: 10px auto 0;
    letter-spacing: 0px;
    color: #ffffff;
}

.study_boost_main .part {
    width: 100%;
    height: 376px;
    margin-top: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.study_boost_main .part .left {
    width: 584px;
    height: 323px;
}

.study_boost_main .part .left img {
    width: 100%;
    height: 100%;
}

.study_boost_main .part .left .text {
    position: relative;
    bottom: 273px;
    left: 36px;
    width: 514px;
}
.study_boost_main .part .left .text.first{
	  bottom: 235px;
}
.study_boost_main .part .left .text p:first-child {
    font-size: 30px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    letter-spacing: 0px;
    color: #ffffff;
}

.study_boost_main .part .left .text p:last-child {
    font-size: 18px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 36px;
    letter-spacing: 0px;
    color: #ffffff;
}

.study_boost_main .part .right {
    width: 411px;
    height: 376px;
}

.study_boost_main .part .right img {
    width: 100%;
    height: 100%;
}

.study_boost_main .part .right.phone {
    width: 432px;
    height: 366px;
}

.study_boost_main .part .right.pc {
    width: 529px;
    height: 320px;
}

/* 强心针 */
.study_strong {
    width: 100%;
    height: 795px;
    background-color: #e9eef2;
}

.study_strong_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.study_strong_main .title {
    width: 879px;
    height: 154px;
    margin: 77px auto 0;
}

.study_strong_main .title .c_title {
    font-size: 40px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    letter-spacing: 0px;
    color: #5f616d;
    text-align: center;
}

.study_strong_main .title .e_title {
    font-size: 14px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    text-align: center;
    letter-spacing: 0px;
    color: #5f616d;
    margin-top: 10px;
}

.study_strong_main .content {
    width: 1022px;
    height: 420px;
    margin: 72px 0 0 40px;
}

.study_strong_main .content img {
    width: 100%;
    height: 100%;
}

.study_strong_main .content .text {
    width: 299px;
    position: relative;
    bottom: 342px;
    left: 677px;
}

.study_strong_main .content .text p:first-child {
    font-family: MicrosoftYaHei;
    font-size: 20px;
    font-weight: normal;
    font-stretch: normal;
    text-align: center;
    line-height: 26px;
    letter-spacing: 0px;
    color: #ffffff;
    margin-right: 20px;
}

.study_strong_main .content .text p:last-child {
    font-family: MicrosoftYaHei;
    font-size: 20px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 26px;
    letter-spacing: 0px;
    color: #ffffff;
    margin-top: 53px;
}

/* 定心丸 */
.study_ding {
    width: 100%;
    height: 859px;
    background-color: #060f1b;
}

.study_ding_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.study_ding_main .title {
    width: 1012px;
    height: 154px;
    text-align: center;
    margin: 70px auto 0;
}

.study_ding_main .title .c_title {
    font-family: MicrosoftYaHei;
    font-size: 37px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    letter-spacing: 0px;
    color: #0efff1;
}

.study_ding_main .title .e_title {
    font-family: ArialMT;
    font-size: 14px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    letter-spacing: 0px;
    color: #ffffff;
}

.study_ding_main .content {
    width: 1200px;
    height: 650px;
    position: relative;
    bottom: 110px;
    left: 57px;
}

.study_ding_main .content img {
    width: 100%;
    height: 100%;
}

.study_ding_main .content .text {
    width: 386px;
    position: relative;
    bottom: 370px;
    left: 703px;
}

.study_ding_main .content .text p {
    font-family: MicrosoftYaHei;
    font-size: 20px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    letter-spacing: 2px;
    color: #0efff1;
}

.study_ding_main .content .text ul {
    font-family: MicrosoftYaHei;
    font-size: 14px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 25px;
    letter-spacing: 2px;
    color: #0efff1;
    margin-top: 25px;
}

/* 高燃剂 */
.study_fuel {
    width: 100%;
    height: 1235px;
    background-color: #e9eef2;
}

.study_fuel_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.study_fuel_main .title {
    width: 891px;
    height: 154px;
    margin: 77px auto 0;
}

.study_fuel_main .title .c_title {
    font-family: MicrosoftYaHei;
    font-size: 40px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    text-align: center;
    letter-spacing: 0px;
    color: #5f616d;
}

.study_fuel_main .title .e_title {
    font-family: ArialMT;
    font-size: 16px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    text-align: center;
    margin-top: 9px;
    letter-spacing: 0px;
    color: #5f616d;
}

.study_fuel_main .content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.study_fuel_main .content .part {
    position: relative;
    width: 576px;
    height: 397px;
    border-radius: 10px;
    margin-top: 50px;
}

.study_fuel_main .content .part .top {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 65px;
    height: 63px;
    background-color: #ffffff;
    font-size: 30px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 63px;
    text-align: center;
    letter-spacing: 1px;
    color: #42f7ed;
    transition: all ease 0.5s;
    z-index: 999;
}

.study_fuel_main .content .part .top.active {
    background-color: #42f7ed;
    color: #ffffff;
}

.study_fuel_main .content .part img {
    width: 100%;
    height: 100%;
}

.study_fuel_main .content .part .mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0);
    /* background: rgba(color: #000000, $alpha: 0); */
    color: transparent;
    border-radius: 10px;
    transition: all ease 0.5s;
}

.study_fuel_main .content .part .mask:hover {
    /* background: rgba($color: #000000, $alpha: 0.7); */
    background: rgba(0, 0, 0, 0.7);
}

.study_fuel_main .content .part .text_box {
    position: absolute;
    top: 109px;
    left: 50%;
    width: 290px;
    transform: translateX(-50%);
    text-align: center;
    transition: all ease 0.5s;
}

.study_fuel_main .content .part .text_box h5 {
    font-family: MicrosoftYaHei-Bold;
    font-size: 20px;
    font-stretch: normal;
    line-height: 40px;
    letter-spacing: 1px;
    color: #ffffff;
}

.study_fuel_main .content .part .text_box p {
    font-family: MicrosoftYaHei;
    font-size: 18px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 36px;
    letter-spacing: 1px;
    color: #ffffff;
}

/* 加速器 */
.study_accelerator {
    width: 100%;
    height: 720px;
    background: url(../imgs/bg2.png) no-repeat center;
    background-size: cover;
}

.study_accelerator_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.study_accelerator_main .title {
    width: 1059px;
    height: 155px;
    margin: 70px auto 0;
}

.study_accelerator_main .title .c_title {
    width: 691px;
    height: 101px;
    margin: 0 auto;
    text-align: center;
    font-family: MicrosoftYaHei;
    font-size: 39px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    letter-spacing: 0px;
    color: #0efff1;
}

.study_accelerator_main .title .e_title {
    font-family: ArialMT;
    font-size: 16px;
    font-weight: normal;
    font-stretch: normal;
    text-align: center;
    line-height: 30px;
    letter-spacing: 0px;
    color: #ffffff;
    margin-top: 25px;
}

.study_accelerator_main .part_content {
    display: flex;
    justify-content: space-between;
    margin-top: 82px;
}

.study_accelerator_main .part_content .part {
    position: relative;
}

.study_accelerator_main .part_content .part img {
    width: 280px;
    height: 345px;
}

.study_accelerator_main .part_content .part h5 {
    position: absolute;
    top: 18px;
    left: 28px;
    font-family: SourceHanSansCN-Medium;
    font-size: 24px;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 1px;
    color: #061b26;
}

.study_accelerator_main .part_content .part .text {
    position: absolute;
    bottom: 10px;
    left: 40px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    width: 210px;
    font-family: MicrosoftYaHei;
    font-size: 20px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 43px;
    letter-spacing: 1px;
    color: #ffffff;
}

/* 加油站 */
.study_station {
    width: 100%;
    height: 714px;
    background-color: #e9eef2;
}

.study_station_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.study_station_main .title {
    width: 735px;
    height: 154px;
    margin: 71px auto 0;
    text-align: center;
}

.study_station_main .title .c_title {
    font-family: MicrosoftYaHei;
    font-size: 40px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    letter-spacing: 0px;
    color: #5f616d;
}

.study_station_main .title .e_title {
    font-family: ArialMT;
    font-size: 16px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    letter-spacing: 0px;
    color: #5f616d;
    margin-top: 9px;
}

.study_station_main .content {
    display: flex;
    justify-content: space-between;
    margin-top: 38px;
}

.study_station_main .content .part {
    position: relative;
    width: 264px;
    height: 295px;
}

.study_station_main .content .part .text {
    position: absolute;
    bottom: 60px;
    left: 62px;
    height: 130px;
    text-align: center;
    margin-top: 10px;
}

.study_station_main .content .part .text h5 {
    font-family: MicrosoftYaHei;
    font-size: 24px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    letter-spacing: 0px;
    color: #042557;
}

.study_station_main .content .part .text .inner_text {
    font-family: MicrosoftYaHei;
    font-size: 18px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    letter-spacing: 1px;
    color: #5f616d;
    margin-top: 10px;
}

.study_station_main .content .part.center {
    width: 630px;
    margin-top: 95px;
}

.study_station_main .content .part.center .text {
    left: 241px;
}

.study_station_main .content .part.right {
    margin-top: 35px;
}

.study_station_main .content .part.right .text {
    height: 154px;
}

/* 领路人 */
.study_teacher {
    width: 100%;
    height: 820px;
    background: url(../imgs/bg3.png) no-repeat center;
    background-size: cover;
}

.study_teacher_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.study_teacher_main .title {
    width: 696px;
    height: 154px;
    margin: 71px auto 0;
    text-align: center;
}

.study_teacher_main .title .c_title {
    font-family: MicrosoftYaHei;
    font-size: 40px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 60px;
    letter-spacing: 0px;
    color: #0efff1;
}

.study_teacher_main .title .e_title {
    font-family: ArialMT;
    font-size: 16px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    letter-spacing: 0px;
    color: #ffffff;
    margin-top: 9px;
}

.study_teacher_main .content {
    position: relative;
    margin-top: 17px;
    text-align: center;
}

.study_teacher_main .content img {
    width: 1104px;
    height: 510px;
}

.study_teacher_main .content p {
    position: absolute;
    bottom: 55px;
    left: 112px;
    width: 999px;
    font-family: MicrosoftYaHei;
    font-size: 20px;
    font-weight: normal;
    font-stretch: normal;
    text-align: left;
    line-height: 36px;
    letter-spacing: 1px;
    color: #ffffff;
}

/* 全新系统 */
.newSystem {
    width: 100%;
    height: 2272px;
    background-color: #e9eef2;
}

.newSystem_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.newSystem_main .title {
    width: 928px;
    font-family: MicrosoftYaHei;
    font-size: 40px;
    font-weight: normal;
    font-stretch: normal;
    text-align: center;
    line-height: 60px;
    letter-spacing: 0px;
    color: #5f616d;
    margin: 70px auto 67px;
}

.newSystem_main .part {
    width: 1200px;
    height: 622px;
    background-color: #ffffff;
    border-radius: 5px;
    overflow: hidden;
}

.newSystem_main .part h5 {
    font-family: SourceHanSansCN-Regular;
    font-size: 30px;
    text-align: center;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 0px;
    color: #5f616d;
    margin: 31px 0 31px;
}

.newSystem_main .part .center {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.newSystem_main .part .center .left {
    position: relative;
    width: 475px;
    height: 421px;
    border-radius: 5px;
}

.newSystem_main .part .center .left img {
    width: 100%;
    height: 100%;
}

.newSystem_main .part .center .left h6 {
    position: absolute;
    top: 32px;
    left: 130px;
    font-family: MicrosoftYaHei;
    font-size: 22px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 48px;
    letter-spacing: 2px;
    color: #ffffff;
}

.newSystem_main .part .center .left .text {
    position: absolute;
    top: 113px;
    left: 60px;
    width: 378px;
    font-family: MicrosoftYaHei;
    font-size: 20px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 32px;
    letter-spacing: 2px;
    color: #ffffff;
}

.newSystem_main .part .center .left .text p:nth-child(2) {
    margin-top: 36px;
}

.newSystem_main .part .center .left .text p:nth-child(3) {
    margin-top: 39px;
}

.newSystem_main .part .center .left .text p:nth-child(4) {
    margin-top: 39px;
}

.newSystem_main .part .center .right {
    width: 650px;
    height: 421px;
}

.newSystem_main .part .center .right img {
    width: 311px;
    height: 201px;
}
.newSystem_main .part .center .right .swiper-slide a:nth-child(3){
    margin-top: 15px;
}
.newSystem_main .part .center .right .swiper-slide a:nth-child(4){
    margin-top: 15px;
}
.newSystem_main .part.frm {
    margin: 50px 0 50px;
}

.newSystem_main .part.frm .center .left .text {
    top: 115px;
}

.newSystem_main .part.frm .center .left .text p:nth-child(2) {
    margin-top: 45px;
}

.newSystem_main .part.frm .center .left .text p:nth-child(3) {
    margin-top: 43px;
}

.newSystem_main .part.frm .center .left .text p:nth-child(4) {
    margin-top: 28px;
}



.newSystem_main .part.frm .part.acca {
    height: 682px;
}
.newSystem_main .part.acca .center .left h6{
    top: 42px;
    left: 123px;
}

.newSystem_main .part.acca .center .left .text p{
    position: absolute;
    margin: 0;
}
.newSystem_main .part.acca .center .left .text p:nth-child(1){
  	width:182px;
    top: 44px;
    left: -26px;
}
.newSystem_main .part.acca .center .left .text p:nth-child(2){
    width: 182px;
    top: 44px;
    left: 207px;
}
.newSystem_main .part.acca .center .left .text p:nth-child(3){
    width: 182px;
    top: 123px;
    left: -26px;
}
.newSystem_main .part.acca .center .left .text p:nth-child(4){
    width: 182px;
    top: 123px;
    left: 207px;
}
.newSystem_main .part.acca .center .left .text p:nth-child(5){
    width: 182px;
    top: 206px;
    left: -26px;
}
.newSystem_main .part .swiper-container{
    width: 650px;
}
.newSystem_main .part .swiper-container .swiper-pagination{
	position: static;
}
.newSystem_main .part .swiper-container .swiper-slide{
    width: 650px!important;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.newSystem_main .part .btn {
    display: block;
    width: 218px;
    height: 48px;
    margin: 32px auto 0;
    background-image: linear-gradient(90deg, #215af6 0%, #3ab6eb 100%),
        linear-gradient(#ffffff, #ffffff);
    background-blend-mode: normal, normal;
    border-radius: 24px;
    font-family: MicrosoftYaHei;
    font-size: 18px;
    text-align: center;
    line-height: 48px;
    font-weight: normal;
    font-stretch: normal;
    letter-spacing: 1px;
    color: #ffffff;
    cursor: pointer;
}


/* 底部 */
.footer {
    width: 100%;
    height: 586px;
    background: url(../imgs/bg4.png) no-repeat center;
    background-size: cover;
}

.footer_main {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    overflow: hidden;
}

.footer_main .title {
    width: 560px;
    margin: 51px auto 25px;
    text-align: center;
    font-family: MicrosoftYaHei-Bold;
    font-size: 36px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 48px;
    letter-spacing: 4px;
    color: #ffffff;
}

.footer_main p {
    font-family: MicrosoftYaHei;
    font-size: 24px;
    font-weight: normal;
    letter-spacing: 2px;
    color: #ffffff;
}

.footer_main .get {
    position: relative;
    width: 494px;
    height: 362px;
    margin: 0 auto;
}

.footer_main .get img {
    width: 100%;
    height: 100%;
}

.footer_main .get .info {
    position: absolute;
    top: 47px;
    left: 45px;

}

.footer_main .get .info p {
    font-family: MicrosoftYaHei;
    font-size: 16px;
    text-align: justify;
    text-align-last: justify;
    font-weight: normal;
    font-stretch: normal;
    line-height: 22px;
    letter-spacing: 2px;
    color: #0efff1;
}

.footer_main .get .info p:nth-child(2) {
    margin-top: 47px;
}

.footer_main .get .info p:nth-child(3) {
    margin-top: 50px;
}

.footer_main .get .info p:nth-child(4) {
    margin-top: 47px;
}

.footer_main .get .ipts {
    position: absolute;
    top: 49px;
    left: 150px;
}

.footer_main .get .ipts input {
    display: block;
    border: 0;
    outline: none;
    background-color: #01081e;
    color: #0efff1;
    margin-top: 51px;
}

.footer_main .get .ipts input:nth-child(1) {
    margin-top: 0;
}

.footer_main .get .btn {
    position: absolute;
    top: 112px;
    right: 60px;
    width: 100px;
    height: 30px;
    background: #0efff1;
    color: #01081e;
    outline: none;
    border: none;
   cursor: pointer;
}

.footer_main .get .submit {
    position: absolute;
    bottom: 24px;
    right: 106px;
    width: 280px;
    height: 29px;
    background: #2685c8;
    color: #ffffff;
    outline: none;
    border: none;
   cursor: pointer;
}