@charset "utf-8";

.only_m {
    display: none;
}

.inner {
    position: relative;
    width: 100%;
    max-width: 1000px;
    margin: auto;
    box-sizing: border-box;
}

#header {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100px;
    z-index: 100;
    background-color: #000;
    box-sizing: border-box;
}

#header .inner {
    display: flex;
    height: 100%;
    align-items: center;
    justify-content: space-between;
}

#header h1 a {
    display: block;
    width: 181px;
    height: 33px;
    text-indent: -9999px;
    background: url("../img/logo5.png") center no-repeat;
}

#nav {
    padding-top: 25px;
}

#nav ul {
    display: flex;
}

#nav li + li {
    margin-left: 32px;
}

#nav li a {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
}

/*
.main_banner {
    padding-top: 10px;
    background-color: #000;
}
.main_banner .video {
    width: 100%;
    overflow: hidden;
}
.main_banner video {
    width: 100%;
    min-width: 1000px;
    height: auto;
}

*/
.main_banner {
	padding-top: 10px;
  background-color: #000;		
  position: relative;
  width: 100%;
  height: 100vh; /* 풀화면 배경 */
  overflow: hidden;
}
.main_banner video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  z-index: 1;
}
/* 텍스트는 위로 */
.main_banner .inner {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  color: #fff;
	padding-top: 400px;
}

/* 가독성 보강용 오버레이 */
.main_banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35);
  z-index: 1;
}

.main_text {
    padding: 10px 0 200px;
}
.main_text h2 {
    font-size: 60px;
    color: #fff;
    line-height: 1.2;
    font-weight: 900;
    letter-spacing: -0.4px;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.main_text p {
    padding-top: 19px;
    font-size: 20px;
    color: #fff;
    letter-spacing: -0.5px;
}

.about {
    width: 100%;
    max-width: 1000px;
    margin: auto;
    padding: 100px 0 200px;
}

.about h2 {
    font-weight: bold;
    font-size: 50px;
    color: #0d0d0d;
    line-height: 1;
}

.about p {
    padding-top: 10px;
    font-size: 16px;
    color: #0d0d0d;
}

.about ul {
    display: flex;
    padding-top: 35px;
}

.about li {
    padding: 0 12px;
    height: 28px;
    line-height: 26px;
    font-weight: 500;
    font-size: 14px;
    color: #0d0d0d;
    border-radius: 14px;
    border: 1px solid #000;
    box-sizing: border-box;
}

.about li + li {
    margin-left: 8px;
}
.about small {
    color: #888;
		font-size: 0.9em;
}

.history {
    padding: 139px 0 181px;
    background-color: #262626;
}

.history h2 {
    position: relative;
    padding-bottom: 63px;
    font-size: 50px;
    font-weight: bold;
    color: #fff;
}

.history_box {
    position: relative;
    width: 880px;
    height: 1150px;
    margin: auto;
    box-sizing: border-box;
}

.history_box::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    padding-top: 32px;
    width: 1px;
    height: 100%;
    max-height: 1520px;
    background-color: #fff;
}

.history_box > div > div {
    width: 50%;
    box-sizing: border-box;
}

.left_box div {
    float: left;
}

.right_box div {
    float: right;
}

.history_box h3 {
    width: 130px;
    height: 32px;
    padding: 0 10px;
    line-height: 30px;
    border-radius: 0 4px 4px 0;
    font-size: 18px;
    color: #0d0d0d;
    font-weight: 600;
    background-color: #fff;
    box-sizing: border-box;
}

.history_box ul {
    padding: 18px 0 37px;
}

.left_box div {
    display: flex;
    text-align: right;
    flex-direction: column;
    align-items: flex-end;
}

.left_box h3 {
    border-radius: 4px 0 0 4px;
}

.history_box li {
    position: relative;
    padding-left: 24px;
    font-size: 16px;
    color: #fff;
    font-weight: 500;
    letter-spacing: -0.4px;
}

.history_box li::before {
    content: "";
    z-index: 1;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: url("../img/bubble.png") center no-repeat;
}

.history_box li + li {
    margin-top: 14px;
}

.left_box li {
    padding-left: 0;
    padding-right: 24px;
}

.left_box li::before {
    right: -4px;
}

.right_box li::before {
    left: -4px;
}

.history_box li.point::before {
    background: url("../img/bubble2.png") center no-repeat;
}

.service {
    padding: 143px 0 144px;
    background-color: #0d0d0d;
}

.service h2 {
    position: relative;
    padding-bottom: 70px;
    line-height: 1;
    font-size: 50px;
    font-weight: bold;
    color: #fff;
}

.service img {
    padding-left: 20px;
}

.service h3 {
    margin-top: 16px;
    padding-top: 19px;
    padding-left: 20px;
    padding-bottom: 10px;
    line-height: 1;
    font-size: 20px;
    font-weight: bold;
    color: #ffff;
    border-top: 1px solid #fff;
}

.service p {
    padding-left: 20px;
    font-size: 14px;
    color: rgb(128, 128, 128);
    line-height: 1.571;
}

.service div + div {
    padding-top: 96px;
}
.service small {
    color: #888;
		font-size: 0.9em;
}

.partners {
    width: 100%;
    max-width: 1000px;
    margin: auto;
    padding: 95px 0 101px;
    box-sizing: border-box;
}

.partners > h2 {
    font-size: 50px;
    line-height: 1;
    font-weight: bold;
    color: #0d0d0d;
}

.partners > p {
    padding: 10px 0 30px;
    color: #0d0d0d;
    font-size: 16px;
}

.partners ul {
		width: 100%;
    padding: 43px 0 10px;
    display: flex;
		flex-wrap: wrap;
		justify-content: flex-start; /* 왼쪽 정렬 */
		gap: 20px;                /* 아이템 간격 */
    box-sizing: border-box;
}
.partners li {
	list-style: none;
    width: calc(25% - 20px);  /* 한 줄에 4개 정도 (원하면 20% 등으로 조정) */
    display: flex;
    align-items: center;
}
.partners img {
	width: 100%;
	height: auto;             /* 비율 유지 */
	padding-left: 0;          /* 왼쪽 여백 제거 */
}
/*
.partners li + li {
    margin-left: 30px;
}
*/
.content_list {
   padding: 144px 0 133px;
   background-color: #262626;
}
.content_list h2 {
    padding-bottom: 30px;
    font-size: 50px;
    color: #fff;
    line-height: 1;
    font-weight: bold;
}
.content_list p {
    font-size: 16px;
    color: #fff;
}
.content_list_book {
    padding: 40px 0 13px;
}
.content_list_book h3 {
    padding-bottom: 18px;
    line-height: 1;
    font-size: 22px;
    color: #fff;
    font-weight: bold;
}
.content {
    padding: 144px 0 133px;
    background-color: #262626;
}
.content h2 {
    padding-bottom: 30px;
    font-size: 50px;
    color: #fff;
    line-height: 1;
    font-weight: bold;
}
.content p {
    font-size: 16px;
    color: #fff;
}
.content small {
    color: #888;
		font-size: 0.9em;
}
.content_book {
    padding: 40px 0 13px;
}

.content_book h3 {
    padding-bottom: 18px;
    line-height: 1;
    font-size: 22px;
    color: #fff;
    font-weight: bold;
}
.content_book h4 {
    padding-bottom: 18px;
    line-height: 1;
    font-size: 15px;
    color: #fff;
    font-weight: bold;
}

.content_book .swiper-slide {
    max-width: 220px;
}

.content_book .swiper-slide img {
	height:250px;
	padding: 10px 10px 0;
}

.swiper {
    overflow: hidden;
}

.organization {
    padding: 146px 0 89px;
    background-color: #0d0d0d;
}

.organization h2 {
    padding-bottom: 52px;
    font-size: 50px;
    font-weight: bold;
    line-height: 1;
    color: #fff;
}

.organization ul {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
}

.organization li {
    width: 50%;
    padding-bottom: 55px;
    font-size: 16px;
    line-height: 1.5;
    color: rgb(128, 128, 128);
    box-sizing: border-box;
}

.organization h3 {
    padding-bottom: 16px;
    font-size: 20px;
    line-height: 1;
    font-weight: 600;
    color: #fff;
}
.organization p {
    font-size: 14px;
    color: #888;
}
.organization small {
    color: #888;
		font-size: 0.9em;
}

.nuon_banner {
    position: relative;
    width: 100%;
    max-width: 1000px;
    padding: 150px 0 0 0;
    margin: auto;
    box-sizing: border-box;
		background: url("https://img.piuri.com/contest/nuon_bn_contest11.jpg") center no-repeat;
}

.join_us {
    position: relative;
    width: 100%;
    max-width: 1000px;
    padding: 94px 0 94px;
    margin: auto;
    box-sizing: border-box;
}

.join_us h2 {
    font-size: 50px;
    font-weight: bold;
    line-height: 1;
    padding-bottom: 28px;
    color: #000;
}

.join_us p {
    padding-right: 168px;
    font-size: 14px;
    line-height: 1.375;
    color: #4c4c4c;
}

.join_us strong {
    display: block;
    padding-right: 168px;
    padding-bottom: 5px;
    font-size: 16px;
    color: #000;
}

.join_us a {
    position: absolute;
    right: 0;
    bottom: 99px;
    display: block;
    width: 150px;
    height: 36px;
    border-radius: 18px;
    line-height: 34px;
    text-align: center;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    background-color: #0d0d0d;
    box-sizing: border-box;
}

.contact {
    padding: 147px 0;
    #background-color: #262626;
	background-color: #fff;
}

.contact h2 {
    font-size: 49.48px;
    font-weight: bold;
    #color: #fff;
    line-height: 1;
	color: #0d0d0d;
}

.contact .map_box {
    padding-top: 22px;
}

.contact .map_box h3 {
    line-height: 1;
    font-size: 20px;
    font-weight: 600;
    #color: #fff;
	color: #0d0d0d;
}

.contact .map_box p {
    padding-top: 22px;
    padding-bottom: 23px;
    font-size: 14px;
    #color: #fff;
	color: #0d0d0d;
}

.root_daum_roughmap,
.root_daum_roughmap .wrap_map {
    width: 100%;
    height: 400px !important;
}

.map_adr {
    margin-top: 18px;
    padding: 18px 10px;
    background-color: #1f1f1f;
}

.map_adr dt {
    font-size: 14px;
    font-weight: bold;
    color: #ccc;
    line-height: 1;
}

.map_adr dd {
    padding-top: 18px;
    font-size: 12px;
    color: #ccc;
}

.question {
    margin-top: 20px;
    padding-top: 26px;
    /*border-top: 1px solid #808080;*/
		background-color: #fff;
		color: #000;
}
.question h4 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1;
    /*color: #808080;*/
		color: #000;
    padding-bottom: 10px;
}
.question h3 {
    padding-bottom: 38px;
    font-size: 23.84px;
    font-weight: bold;
		color: #000;
    line-height: 1;
}
.question small {
    color: #888;
		font-size: 0.8em;
}
.question ul {
		/*display: flex;*/
}

.question li {
    font-size: 14px;
    color: #fff;
    line-height: 1;
    letter-spacing: -0.55px;
		padding:15px 0 0 0;
}
/*
.question li + li {
    margin-left: 50px;
		border:1px #000  solid;		
}
*/


#footer {
    padding: 39px 0;
    text-align: center;
    background-color: #e6e6e6;
}

#footer p {
    padding-top: 15px;
    font-size: 12px;
    color: #000;
    line-height: 1;
}

#footer img {
    width: 120px;
}

.m_nav {
    position: fixed;
    right: -100%;
    top: 55px;
    z-index: 100;
    width: 280px;
    height: 325px;
    padding: 36px 19px;
    background-color: #fff;
    transition: all 0.5s;
    box-sizing: border-box;
}

.m_nav.on {
    right: 0;
}

.m_nav li + li {
    padding-top: 23px;
}

.m_nav li a {
    font-size: 22px;
    font-weight: 600;
    color: #000;
}

.close {
    position: absolute;
    right: 5px;
    top: 6px;
    display: block;
    width: 20px;
    height: 20px;
    text-align: center;
    line-height: 0;
    cursor: pointer;
}

.close img {
    position: relative;
    top: 50%;
    transform: translateY(-50%);
}



@media screen and (max-width: 1000px) {
	.main_banner .inner {
		height: 100%;
		padding-top: 400px;
	}

	.inner {
			width: 95%;
	}

	.about, .partners, .join_us {
			width: 95%;
	}

	.contact {
			padding-bottom: 97px;
	}

	.question ul {
			display: flex;
			flex-wrap: wrap;
	}

	.question li {
			width: 50%;
			margin-bottom: 50px;
	}

	.question li + li {
			margin-left: 0;
	}

}

@media screen and (max-width: 780px) {

		.nuon_banner {
				padding: 100px 0 0 0;			
				margin: auto;
				box-sizing: border-box;
				background: url("https://img.piuri.com/contest/nuon_bn_contest_small2.jpg") center no-repeat;
				background-size: 100%;
		}

    .only_m {
        display: block;
    }

    .only_pc {
        display: none;
    }

    .inner {
        width: calc(100% - 40px);
    }

    #header {
        height: 65px;
    }

    #header h1 a {
				width:120px;
        height:21px;
        background-size: cover;
    }

    #nav {
        display: none;
    }

    .menu {
        width: 22px;
        height: 14px;
        background: url("../img/menu.png") center no-repeat;
        cursor: pointer;
    }

    
		/*
		.main_banner {
        padding-top: 105px;
    }
    .main_banner .video {
			padding-top:30px;
       height: 100%;
    }
		
    .main_banner video {
        min-width: auto;
    }
		*/
		.main_banner .inner {
			padding-top: 150px;						
		}

    .main_text {
        padding: 80px 0 150px;
    }

    .main_text h2 {
        font-size: 30px;
				line-height: 1.3;
    }

    .main_text p {
        padding-top: 35px;
        font-size: 18px;
        line-height: 1.571;
    }
      
    .about {
        width: 100%;
        padding: 0;
        background-color: #0d0d0d;
    }

    .about div {
        width: 100%;
        margin: auto;
        padding: 70px 20px 90px;
        background-color: #fff;
        box-sizing: border-box;
    }

    .about h2 {
        font-size: 34px;
        font-weight: bold;
    }

    .about p {
        padding-top: 12px;
        font-size: 14px;
        line-height: 1.571;
    }
      
    .about ul {
        padding-top: 15px;
        flex-wrap: wrap;
    }

    .about li {
        margin-bottom: 9px;
        margin-right: 9px;
    }

    .about li + li {
        margin-left: 0;
    }

    .history {
        padding: 80px 0 80px;
    }
        
    .history h2 {
        padding-bottom: 0;
        margin-bottom: 40px;
        font-size: 34px;
        /* transform: translateY(-24px); */
    }

    .history_box {
        width: 100%;
        height: auto;
        padding-bottom: 3px;
    }

    .history_box::after {
        content: "";
        width: 1px;
        height: calc(100% - 80px);
    }
    
    .history_box li {
        font-size: 14px;
    }

    .history_box h3 {
        width: 120px;
        height: 28px;
        line-height: 28px;
        font-size: 16px;
    }

    .service {
        padding: 80px 0 0;
    }

    .service h2 {
        padding-bottom: 0;
        margin-left: 20px;
        margin-bottom: 34px;
        font-size: 34px;
        transform: translateY(-18px);
    }


    .service .inner {
        width: 100%;
        padding-bottom: 40px;
    }

    .service .inner div {
        width: calc(100% - 40px);
        margin: auto;
        border-radius: 8px;
        padding-top: 20px;
        padding-bottom: 19px;
        box-sizing: border-box;
    }

    .service .inner div + div {
        margin-top: 30px;
		margin-bottom: 30px;
    }

    .service h3 {
        border-top: 1px solid #e5e5e5;
        margin-top: 19px;
    }

    .service p {
        padding-right: 20px;
    }

    .partners {
        width: 100%;
        padding: 70px 0 30px;
    }

    .partners > h2 {
        padding-left: 20px;
        font-size: 34px;
        font-weight: bold;
    }

    .partners > p {
        padding: 10px 20px 50px;
        font-size: 14px;
    }

    .partners ul {
        width: calc(100% - 30px);
        margin: auto;
        padding: 5px 0 0px;
        flex-wrap: wrap;
    }

    .partners li {
        margin-right: 10px;
        margin-bottom: 15px;
    }

    .partners li + li {
        margin-left: 0;
    }

    .content {
        padding: 80px 0 70px;
    }

    .content h2 {
        margin-left: 20px;
        /* margin-bottom: 8px; */
        font-size: 34px;
    }

    .content .inner {
        width: 100%;
        /* background-color: #1a1a1a; */
    }

    .content p {
        margin-left: 20px;
        font-size: 14px;
    }

    .content_book {
        margin-left: 20px;
        padding-bottom: 40px;
    }

    .organization {
        padding: 70px 0 70px;
        /* background-color: #1a1a1a; */
    }
    
    .organization h2 {
        padding-bottom: 40px;
        font-size: 34px;
        font-weight: bold;
    }
        
    .organization ul {
        flex-direction: column;
    }

    .organization li {
        width: 100%;
        padding-bottom: 34px;
        font-size: 14px;
        box-sizing: border-box;
    }

    .organization h3 {
        padding-bottom: 16px;
        font-size: 20px;
    }

    .organization h3 span {
        padding-bottom: 10px;
        font-size: 14px;
    }

    .join_us {
        width: 100%;
        padding: 0;
        background-color: #fff;
    }

    .join_us div {
        width: calc(100% - 40px);
        margin: auto;
        padding: 20px 0;
        border-radius: 10px;
        box-sizing: border-box;
    }

    .join_us h2 {
        font-size: 34px;
        font-weight: bold;
        padding-bottom: 18px;
    }

    .join_us strong {
        padding-right: 0;
        /* padding-bottom: 18px; */
        font-size: 14px;
        line-height: 1.571;
        font-weight: 600;
        letter-spacing: -0.3px;
    }
      
    .join_us p {
        padding: 0;
        /* border-radius: 4px; */
        font-size: 12px;
        /* background-color: #f5f5f5; */
    }

    .join_us a {
        position: static;
        width: 140px;
        height: 34px;
        font-size: 14px;
        margin: 20px auto 0;
    }

    .contact {
        padding-top: 92px;
        padding-bottom: 0;
    }

    .contact .inner {
        width: 100%;
        /* background-color: #1a1a1a; */
    }

    .contact h2 {
        padding-bottom: 0;
        margin-left: 20px;
        margin-bottom: 11px;
        font-size: 34px;
        transform: translateY(-35px);
    }

		.contact .map_box {
        padding-top: 0;
        width: calc(100% - 40px);
        margin: 0 auto 50px;
    }

    .contact .map_box p {
        padding-top: 10px;
    }

    .contact .map_box p span {
        display: inline-block;
        vertical-align: middle;
        padding: 0 8px;
        height: 22px;
        margin-top: -2px;
        margin-right: 6px;
        line-height: 22px;
        border-radius: 5px;
        text-align: center;
        font-size: 14px;
        font-weight: 500;
        color: #000;
        background-color: #fff;
    }

    .root_daum_roughmap, .root_daum_roughmap .wrap_map {
        height: 250px !important; 
    }

    .map_adr {
        margin-top: 20px;
        border: 1px solid #808080;
        background-color: #1a1a1a;
    }

    .question {
        width: calc(100% - 40px);
        margin: -10px auto 0;
        padding-bottom: 40px;
				color: #000;
				background-color: #fff;
    }

    .question ul {
        display: block;
    }

    .question li {
        width: 100%;
        margin-bottom: 18px;
    }
		
		.content_book {
				padding: 20px 0 13px;
		}

    .content_book .swiper-slide {
        width: 50%;
    }

    .content_book .swiper-slide img {
				height:190px;
				padding: 10px 5px 0;
    }

}

@media screen and (max-width: 395px) {
    .partners li:nth-child(2n) {
        margin-right: 0;
    }
		
		.main_banner {
			height:650px;
		}
}