@media all and (max-width:1900px) {

    #wrap2 {
        width: 100%;
    }

    .ft_box {
        width: 90%;
    }

    .tc_txt {
        width: 100%;
    }

    .history {
        /* overflow: hidden; */
    }


    .history>div {
        margin-left: 37vw;
    }

    .history h2 {
        font-size: 25px;
    }

    .history li {
        font-size: 15px;
    }

    .arb1 {
        width: 80%;
    }


    .ptb_txt {
        width: 55%;
    }

    .ptb_txt .ptt1 {
        font-size: 23px;

    }

    ul.tabs2 {
        width: 100%;
    }
}







@media all and (max-width:1800px) {
    .pt2_box {
        display: block;

        width: 90%;
        margin: 0 auto 150px;
    }

    .ptb_txt {
        width: 100%;
    }

    .ptb_img {
        margin: 0 auto 50px;
    }

    .ptb_txt .ptt1 {
        text-align: center;
    }

    .ptb_txt .ptt2 {
        text-align: center;
    }


    .ptb_txt .ptt4 {
        text-align: center;
    }
}

@media all and (max-width:1600px) {

    .header {
        height: 420px;
    }

    .section .c_container .box .txt {}

    .sub_menu div a {
        font-size: 15px;
        margin-top: 2px;
    }

    .header_bottom {
        height: 60px;
    }

    .sub_menu div {

    }
    .sub_menu div a {
        font-size: 15px;
        margin-top: 22px;
    }

    .header_top .ht_left {
        width: 5%;
    }

    .header_top .ht_right {
        width: 95%;
    }

    .header_top .ht_left .htl_txt {

        font-size: 16px;

        margin-top: 260px;
    }

    .s_section {
        margin: 130px 0 130px;
    }

    .org_bottom div {
        width: 90%;
    }

    .arb1_img {}

    .arb1_txt {

        width: 65%;
    }

    .pf_grid {
        width: auto;
        grid-template-columns: repeat(2, 1fr);
    }

    .pfg2 {}


    .pfg_bottom {
        margin-bottom: 50px;
    }

    .pf_grid div:nth-child(3) .pfg_middle::before {
        display: none;
    }

    .pf_grid div:nth-child(6) .pfg_middle::before {
        display: none;
    }



    .section .c_container .wrap .box3 .txt h1 {
        font-size: 22px;
    }




}

@media all and (max-width:1280px) {


    .rd_txt2 {
        width: auto;
    }

    .header {
        margin-top: 60px;
    }

    ul.tabs {
        width: 80%;

    }

    ul.tabs li {
        font-size: 20px;
    }

    ul.tabs2 li {
        font-size: 16px;
    }

    .tc_txt .tct_big {
        font-size: 21px;
    }

    .tc_txt .tct_small div {
        font-size: 15px;
    }

    .org_bottom {

        grid-template-columns: repeat(2, 1fr);
        height: auto;
    }

    .org_bottom div {
        width: 90%;
        margin: 0px auto 10px;
    }


    .history>div {
        margin-left: 21.5vw;
    }

    .htb_bottom {
        font-size: 15px;
    }

    .history h2 {
        font-size: 23px;
    }

    .htxt_box {
        margin-top: 7px;
    }

    .history div:nth-child(2n) .h_box {
        margin-left: 20px;
    }

    .history>div:nth-child(2n) h2:after {
        left: 243px;
    }

    .history>div:nth-child(2n) h2 {
        margin-left: 30px;
        width: auto;
        text-align: left;
    }

    .history>div:nth-child(2n) h2:after {
        left: -98px;
    }

    .arb1 {
        width: 90%;
    }

    .arb1_img {

        margin-right: 10%;
    }

    .arbt_bottom span {
        font-size: 15px;
        line-height: 23px;
    }

    .arbt_top {

        font-size: 23px;

    }

    .pf_grid {
        width: 90%;
        grid-template-columns: repeat(1, 1fr);
    }

    .pfg2 {
        grid-template-columns: repeat(2, 1fr);
        width: 100%;
    }



    .pts_img {
        width: 260px;
    }



    /* 제품기술 */
    .section .c_container .box {
        display: block;
    }

    .section .c_container .box .txt {
        margin-top: 30px;
        width: 100%;
    }

    .section .c_container .box {
        width: 90%;
        margin: 0 auto 50px;

    }

    .section .c_container .wrap .box3 .txt h1 {
        font-size: 15px;
    }

    .section .c_container .box .txt .pdTxt_box_2 {
        display: block;
        margin-bottom: 30px;
    }

    .expBoX {
        display: block;
        width: 100%;
    }

    .expBoX2 .expImg {
        margin-bottom: 30px;
    }

    .expImg {
        width: 100%;
    }

    .expImg2 {
        margin-top: 50px;
    }

    .section .c_container .box .box_img {
        margin: 0 auto;
    }


    .exArrow:last-child:before {
        content: "\f309";
        font-family: "Font Awesome 5 Free";
        font-weight: 900;
        position: absolute;
        right: 50%;
        /* transform: translateY(-50%); */
        bottom: -45px !important;
    }

    .exArrow::after {
        display: none;
    }

    .section .c_container .box .txt .button {
        margin: 0 auto;
    }

    .section .c_container .box .txt .pdTxt_box_2 ul li {
        width: fit-content;
        margin: 0 auto;
    }

    .section .c_container .box .txt .pdTxt_box_2.gas_pdb2 ul {
        margin-right: 0;
    }


    /* 인재채용 */
    .talent_box {
        display: block;
    }

    .tlb_sbox {
        width: auto;
    }


    .section .c_container .c_wrap {
        display: block;
    }

    .section .c_container .c_wrap .c_box {
        margin-bottom: 100px;
    }





    .modal .content {
        width: 100%;
        height: 100%;
    }

    .modal .content.ct {
        height: 100%;
    }
    .ds_fl p {
        font-size: 2vw;
        margin-bottom: 0.5vw;
        line-height: 13px;
    }
    .ds_fl li:first-child{
        font-size: 4vw;
    }



}

@media all and (max-width:1024px) {



    .s_section .c_container {
        width: 80%;
        margin: 0 auto;
    }

    .header {
        margin-top: 50px;
    }

    .sub_menu {
        width: 700px;
    }

    .header_top .ht_left .htl_txt {
        font-size: 15px;
    }

    .org_bottom {}

    .history>div {
        margin-left: 19.5vw;
    }

    .arb1 {
        width: 90%;
        display: block;
        height: 600px;
    }


    .arb1_txt {
        width: 85%;
        margin: 0 auto;
    }

    .arb1_txt div {
        text-align: center;
    }

    .arb1_img {
        width: fit-content;

        margin: 0 auto 50px;
    }


    .arbt_top::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .areas_top {
        width: 640px;
    }

    .ptb_txt {
        width: 100%;
        margin: 0 auto;
    }

    .ptb_txt .ptt3 {
        display: block;
    }

    .ptb_txt .ptt2 {

        width: 100%;
        margin: 0 auto 50px;
    }

    .ptb_txt .ptt2::after {

        bottom: -20px;

    }

    .tel_box {
        margin-bottom: 15px;
    }

    .ptb_txt .ptt2::after {

        width: 100%;
        left: 50%;
        transform: translateX(-50%);
    }

    .ptb_txt .ptt3 {
        width: fit-content;
        margin-bottom: 60px;
    }

    .section .c_container .wrap {
        display: block;

    }

    .section .c_container .wrap .box3 {
        width: 90%;
        margin: 0 auto 60px;

    }

    .section .c_container .wrap .box3 .txt h1 {
        font-size: 22px;
    }

    .section .c_container .wrap .box3 .txt {
        bottom: 10%;
    }

    .airDesc {
        width: 80%;
        font-size: 15px;
    }






}

@media all and (max-width:900px) {
    .pt_slick {
        grid-template-columns: repeat(2, 1fr);
    }

}


@media all and (max-width:768px) {




    input[id="menuicon"]:checked~.slb1_re {
        left: 0px;
    }

    .rt_stxt {
        width: 80%;
        margin: 0 auto;
        line-height: 22px;
        font-size: 14px;
    }

    .s_section .c_container {
        width: 80%;
    }

    /* header gnb 반응형 시작 */
    .header {
        height: unset;
    }

    .header_top {
        height: 280px;
    }

    .header_bottom {
        height: unset;
    }

    .header_bottom .sub_menu {
        display: block;
        width: unset;
    }

    .header_bottom .sub_menu div {
        line-height: 50px;
        text-align: center;
        font-size: 18px;
        display: block;
        margin: auto;
        width: 100%;
    }

    .header_top .ht_left {
        display: none;
    }

    .header_top .ht_right {
        width: 100%;
    }

    .header_top .ht_right .rtxt_box {
        display: block;
        margin: auto;
        text-align: center;
        padding-top: 20vw;
    }

    .header_bottom .sub_menu {}

    .sub_menu div a {
        font-size: 20px;
        margin-top: 0;
    }




    /* 푸터 */
    .ft_box .ftb_right {
        display: none;
    }

    .footer_box:after {
        display: none;
    }




    /* Product1,2 반응형 시작*/
    .s_section .c_container .box {
        display: block;
        height: unset;
    }

    .s_section .c_container .box .box_img {
        margin-right: unset;
    }

    .s_section .c_container .box .box_img img {
        width: 100%;
    }

    .s_section .c_container .box .txt {
        position: unset;
        margin-top: 5vw;
    }

    .section .c_container .box .txt .pd_img li {
        margin-right: 0;
    }




    .section .c_container .box2 .box_img {
        width: 90%;
        height: 50vw;

        margin: 0 auto !important;
    }

    .section .c_container .box2 .box_img img {
        width: 70% !important;
    }

    .section .c_container .box2 .box_img img.spimg {
        width: 40% !important;
    }










    /* Product3 반응형 시작*/



    .s_section .c_container .wrap {
        display: block;
    }

    .s_section .c_container .wrap .box3 {
        padding: 0;
    }







    /* 서브1 - 컴퍼니 */
    .tab-content .tc_img {
        width: 90%;
    }

    .sub_mainTxt {

        margin: 0 auto 100px;

    }



    .tc_txt {

        margin: 30px auto 0;
    }

    .tc2_cont .t2_img {
        width: 100%;
        margin: 0 auto;
    }


    iframe {
        width: 100%;
    }

    .tc2_cont .t2_txt {
        margin-top: 30px;
    }


    .org_top {
        width: 100%;
    }

    .orgt_img {
        width: 100%;
        /* height: 260px; */
        background-size: contain;
    }

    .org_bottom {
        width: 90%;
    }

    .arb1_img {

        margin: 0 auto 30px;
    }

    .areas_top {
        width: 100%;
    }

    .pts_img {

        margin: 0 auto 30px;
        background-size: contain;
    }

    .pt_slick span {
        font-weight: bold;
        font-size: 20px;
    }

    .tc_txt .tct_big {
        font-size: 18px;
    }

    .pt_slick .slick-next,
    .pt_slick .slick-prev {
        bottom: 40%;
    }

    .pt_slick .slick-next {
        right: 10px;
    }

    .pt_slick .slick-prev {
        left: 20px;
    }

    .ptb_img {
        width: auto;
    }


    /* 서브2 - 제품 */
    .section .c_container .box {
        width: 100%;
        margin: 0 auto 100px;
    }


    .section .c_container .box .box_img {

    }

    .section .c_container .box .box_img img {
        width: 100%;
    }

    /* 서브3 - 알앤디*/

    .rd_img {
        width: 100%;
    }

    .rd_txt2 div {

        line-height: 23px;
        font-size: 14px;

    }

    .rd_txt2 {
        width: 85%;
    }

    .pfg2 {
        grid-template-columns: repeat(1, 1fr);
        width: 100%;
    }


    /* 서브4 - 홍보센터 */

    .section .c_container .c_wrap .c_box img {
        width: 100%;
    }

    .section .c_container .c_wrap .c_box a ul {
        width: 100%;
        display: inline-block;
    }



    /* 서브5 - 인재채용 */
    .sub_menu div.on {
        background-color: #0a69b1;
    }

    .sub_menu div.on a {
        color: #fff;
    }

}

@media all and (max-width:600px) {

    .s_section .c_container {
        width: 80%;
    }

    .history>div {
        margin-left: 12vw;
    }

    .history .h_box {
        margin-left: 10px;
    }

    .history div:nth-child(2n-1) .h_box,
    .history div:nth-child(2n) .h_box {
        margin-left: 0px;
    }


    .history h2::after {
        left: -77px;
    }

    .history>div:nth-child(2n) h2:after {
        left: -77px;
    }

    .org_bottom {

        grid-template-columns: repeat(2, 1fr);
    }

    .org_bottom div {
        width: 90%;
        margin: 0 auto 25px;
        height: 60px;
    }

    .org_bottom {
        width: 100%;
    }

    .arb1 {

        height: 650px;
    }

    .arb1_img {

        height: 35%;
        margin: 0 auto 30px;
    }

    .ptb_img {
        width: auto;
        height: 240px;
    }

    .ptb_txt .ptt2 {

        font-size: 14px;
    }

    .ptb_txt .ptt4 a {
        display: block;
    }

    .ptb_txt .ptt4 a:first-child {
        margin-right: 0;
        margin-bottom: 20px;
    }

    .tc_txt {
        width: 300px;
    }

    .tct2 {
        width: 100%;
    }

    td {
        font-size: 15px;
        line-height: 20px;
    }

    .rd_img {
        height: 150px;
    }

    .pfg_top {
        font-size: 22px;
    }

    .pfg_bottom {
        font-size: 13px;
    }


    .tab-content .tc_img {
        height: 200px;
    }

    .tc2_cont .t2t_main {
        font-size: 23px;
    }

    .tc2_cont .t2t_sub div {
        font-size: 14px;
        line-height: 20px;
    }


    .history ol {
        width: 90%;
    }

    .history div:nth-child(2n-1) .h_box,
    .history div:nth-child(2n) .h_box {
        margin-left: -30px;
    }

    .history h2::after {
        left: -47px;
    }

    .history>div:nth-child(2n) h2:after {
        left: -47px;
    }

    .history h2 {
        font-size: 21px;
    }

    .htb_bottom,
    .htb_top {
        font-size: 14px;
    }

    .org_top {
        /* height: 250px; */
    }

    .areas_top {
        height: 140px;
    }

    .areas_bottom {
        margin-top: 50px;
    }

    .pt2_box {
        margin-bottom: 80px;
    }

    .section .c_container .wrap .box3 .txt h1 {
        font-size: 16px;
    }

    .pt_slick {
        display: block;
    }

    .pts_img {
        margin-bottom: 10px;
    }

    .pt_slick span {
        font-size: 15px;
    }

    .section .c_container {
        width: 90%;
    }

    .section .c_container .box_2 {
        margin-bottom: 130px;
    }


}

@media all and (max-width:480px) {
    .ptb_img {
        margin: 0 auto 0px;
        height: 220px;
    }

    .header_top .ht_right .rtxt_box {

        padding-top: 30vw;
    }







    .tlt_bottom {
        width: auto
    }

    .tlt_top {
        font-size: 20px;
    }

    .tc_txt {
        width: auto;
    }

    .tc_txt .tct_big {
        margin-bottom: 80px;
    }

    .tc_txt .tct_big:after {
        bottom: -40px;
    }

    .tlbs_img {
        height: 170px;
        margin: 0 auto 20px;
    }

    .tlb_sbox {
        height: auto;
        margin-bottom: 70px;
    }



    .section .c_container .wrap .box3 {
        width: 100%;
    }

    .section .c_container .wrap .box3 .txt .button {
        width: 150%;
    }

    .section .c_container .wrap .box3 .txt h1 {
        font-size: 14px;
        line-height: 20px;
        display: inline-block;
        width: 100px;
    }

    .section .c_container .wrap {
        width: 100%;
    }

    .section .c_container .box .txt h3 {

        font-size: 14px;
    }

    .section .c_container .box .txt h1 {
        font-size: 22px;
    }

    .section .c_container .box {
        padding-bottom: 20px;
    }

    .section .c_container .box_3 .sub_txt {
        margin: 0 auto 30px;
    }

    ul.tabs li {
        font-size: 17px;
    }


}