@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.6/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@200..900&display=swap');
@import url('https://fonts.googleapis.com/css?family=Quattrocento+Sans');
@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-1Thin.woff') format('woff');
    font-weight: 100;
    font-display: swap;
}

@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-2ExtraLight.woff') format('woff');
    font-weight: 200;
    font-display: swap;
}

@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-3Light.woff') format('woff');
    font-weight: 300;
    font-display: swap;
}

@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-4Regular.woff') format('woff');
    font-weight: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-5Medium.woff') format('woff');
    font-weight: 500;
    font-display: swap;
}

@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-6Bold.woff') format('woff');
    font-weight: 600;
    font-display: swap;
}

@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-7ExtraBold.woff') format('woff');
    font-weight: 700;
    font-display: swap;
}

@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-8Heavy.woff') format('woff');
    font-weight: 800;
    font-display: swap;
}

@font-face {
    font-family: 'Escoredream';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-9Black.woff') format('woff');
    font-weight: 900;
    font-display: swap;
}
* {
    box-sizing: border-box;
    scroll-behavior: smooth;
    letter-spacing: -0.05em;
}
.pre {
    font-family: 'Pretendard', sans-serif;
}
.en_font {
    font-family: 'Montserrat', serif;
}
.serif {
    font-family: 'Noto Serif KR', serif;
}
body {
    position: relative;
    overflow-x: hidden;
    font-family: 'Pretendard', sans-serif;
    margin: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    word-break: keep-all;
    cursor: url(../img/cursor.png), auto;
}
/* 번역 버튼 스타일 */
#translateBtn {
    position: absolute;
    right: 260px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #fff;
    font-size: 14px !important;
    padding: 8px 16px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    transition: all 0.2s;
}
#translateBtn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}
/* 영문 번역 시 숨김 */
html.translated-ltr .main_back {
    display: none !important;
}
a {
    color: #222;
    text-decoration: none;
}
ul {
    list-style: none;
    padding: 0;
    margin: 0px;
}
li {
    list-style: none;
}
img {
    vertical-align: middle;
    max-width: 100%;
}
h1,
h2,
h3,
h4,
h5,
h6,
p,
span,
strong {
    margin: 0;
}
small {
    font-style: normal;
}
video {
    width: 100%;
    vertical-align: bottom;
}
.center {
    max-width: 1440px;
    width: 100%;
    margin: 0 auto;
}
.iframe16To9 {
    padding-top: 56.25%;
}
.video_wrap {
    position: relative;
    width: 100%;
}

/* 1. 로더 오버레이 스타일 */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #cb9d6c; /* 원하시는 배경색으로 */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}
/* 로딩 완료 후 fade-out */
#loader.fade-out {
    opacity: 0;
    pointer-events: none;
}
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background: #000; */
    z-index: 9999;
}
.loading > img {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
    z-index: 1;
}

.loading-text {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    text-align: center;
    width: 100%;
    height: 100px;
    line-height: 100px;
    z-index: 2;
}
.loading-text span {
    display: inline-block;
    margin: 0 5px;
    color: #fff;
    font-family: 'Quattrocento Sans', sans-serif;
}
.loading-text span:nth-child(1) {
    filter: blur(0px);
    -webkit-animation: blur-text 1.5s 0s infinite linear alternate;
    animation: blur-text 1.5s 0s infinite linear alternate;
}
.loading-text span:nth-child(2) {
    filter: blur(0px);
    -webkit-animation: blur-text 1.5s 0.2s infinite linear alternate;
    animation: blur-text 1.5s 0.2s infinite linear alternate;
}
.loading-text span:nth-child(3) {
    filter: blur(0px);
    -webkit-animation: blur-text 1.5s 0.4s infinite linear alternate;
    animation: blur-text 1.5s 0.4s infinite linear alternate;
}
.loading-text span:nth-child(4) {
    filter: blur(0px);
    -webkit-animation: blur-text 1.5s 0.6s infinite linear alternate;
    animation: blur-text 1.5s 0.6s infinite linear alternate;
}
.loading-text span:nth-child(5) {
    filter: blur(0px);
    -webkit-animation: blur-text 1.5s 0.8s infinite linear alternate;
    animation: blur-text 1.5s 0.8s infinite linear alternate;
}
.loading-text span:nth-child(6) {
    filter: blur(0px);
    -webkit-animation: blur-text 1.5s 1s infinite linear alternate;
    animation: blur-text 1.5s 1s infinite linear alternate;
}
.loading-text span:nth-child(7) {
    filter: blur(0px);
    -webkit-animation: blur-text 1.5s 1.2s infinite linear alternate;
    animation: blur-text 1.5s 1.2s infinite linear alternate;
}

@-webkit-keyframes blur-text {
    0% {
        filter: blur(0px);
    }
    100% {
        filter: blur(4px);
    }
}

@keyframes blur-text {
    0% {
        filter: blur(0px);
    }
    100% {
        filter: blur(4px);
    }
}

/* 커서 따라다니는 logo 모양 요소 */
#cursor_wrap {
    /* display:none; */
    position: fixed;
    z-index: 100000 !important;
    width: 60px;
    height: 60px;
    margin: 24px 0 0 15px;
    top: 50%;
    left: 50%;
    background-image: url(../img/snu_logo.svg);
    background-repeat: no-repeat;
    background-size: cover;
    opacity: 0.5;
}

@keyframes mousehover {
    0% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.2;
    }
    100% {
        opacity: 0.5;
    }
}

/* 커서 따라다니는 스퀘어 모양 요소 */
#cursor_in {
    /* display:none; */
    position: fixed;
    top: 50%;
    left: 50%;
    z-index: 100000 !important;
    margin: -4px 0 0 0px;
    /* margin:15px 0 0 10px; */
    width: 3px;
    height: 3px;
    border-radius: 50px;
    background: rgba(0, 127, 198, 1);
    transition-duration: 0.2s;
    pointer-events: none;
}
#cursor_in:hover {
    cursor: url(../img/cursor1.png), auto;
}

/* 커서 따라다니는 logo 모양 요소에 클래스 hover 있을때 디자인 */
#cursor_wrap.hover {
    animation-name: mousehover;
    animation-duration: 0.4s;
    animation-iteration-count: infinite;
}

/* header */
.header {
    width: 100%;
    position: fixed;
    left: 0px;
    top: 0px;
    z-index: 102;
    background: rgba(0, 0, 0, 0.6);
    transition: all 0.2s;
    padding: 0px 60px;
    transition: background 0.24s cubic-bezier(0.28, 0.11, 0.32, 1);
}
.header.headroom--not-top {
    backdrop-filter: blur(20px);
    /* background: rgba(22, 22, 23, 0.8); */
    /* border-bottom: 1px solid rgba(255, 255, 255, 0.24); */
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
}
.hd_wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90px;
}
.hd_menu {
    display: flex;
    align-items: center;
}
.hd_menu > li > a {
    font-size: 20px;
    font-weight: 400;
    color: #fff;
    position: relative;
    line-height: 90px;
    display: inline-block;
    text-align: center;
    padding: 0px 35px;
}
.hd_menu > li > a > span {
    font-size: 14px;
    color: #ffc98f;
}
.hd_menu > li > a::after {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    width: 0%;
    height: 1px;
    content: '';
    display: block;
    background-color: #ffc98f;
    transition: all 0.2s;
}
.hd_menu > li > a:hover::after {
    width: 50%;
}
.hd_btn {
    display: flex;
    align-items: center;
    font-size: 22px;
    font-weight: 400;
    color: #fff;
    cursor: pointer;
    transition: all 0.2s;
}
.hd_btn > img {
    margin-right: 12px;
}
.hd_btn:hover {
    color: #cb9d6c;
}
.side_menu_wrap {
    /* display: none; */
    opacity: 0;
    position: fixed;
    left: 0px;
    top: 0px;
    z-index: -1;
    width: 100%;
    height: 100%;
}
.side_menu_wrap.active {
    /* display: block; */
    opacity: 1;
    z-index: 103;
}
.side_menu {
    position: absolute;
    right: -1000px;
    top: 0px;
    max-width: 860px;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    transition: all 0.5s;
    padding-top: 70px;
    padding: 91px 120px 0px;
}
.side_menu_wrap.active .side_menu {
    right: 0px;
}
.side_menu_bg {
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.64);
}
.side_menu ul {
    padding-left: 12px;
    padding-top: 48px;
    border-top: 1px solid #707070;
    max-width: 461px;
}
.side_menu_title01 {
    padding-bottom: 113px;
}
.menu_close {
    position: absolute;
    right: 52px;
    top: 10px;
    background-color: #fff;
    width: 140px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0px 27px;
    color: #222;
    font-size: 18px;
    font-weight: 700;
    border-radius: 10px;
    line-height: 48px;
    cursor: pointer;
    transition: all 0.2s;
}
.menu_close:hover {
    background-color: #cb9d6c;
    color: #fff;
}
.menu_close img {
    transition: all 0.2s;
}
.menu_close:hover img {
    filter: invert(1);
}
.side_menu_link {
    position: absolute;
    right: 72px;
    bottom: 95px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 13px;
}
.side_menu_link a {
    background-color: #cb9d6c;
    color: #fff;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    width: 100px;
    height: 100px;
    font-size: 14px;
    font-weight: 400;
    transition: all 0.2s;
}
.side_menu_link a img {
    margin-bottom: 2px;
}
.side_menu_link a:hover {
    background-color: #222;
}
/* .side_menu h3 {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 70px;
    position: relative;
}
.side_menu h3::before {
    content: '';
    display: block;
    position: absolute;
    left: -12px;
    bottom: -21px;
    background-color: #707070;
    height: 1px;
    width: 100%;
    max-width: 461px;
} */
.side_menu li {
    margin-bottom: 29px;
}
.side_menu li:last-child {
    margin-bottom: 0px;
}
.side_menu li span {
    display: block;
    font-size: 20px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 12px;
    transition: all 0.2s;
    cursor: default;
}
.side_menu li a {
    font-size: 34px;
    font-weight: 400;
    color: #fff;
    transition: all 0.2s;
}
.side_menu li:hover > span {
    color: #ffe2c2;
}
.side_menu li:hover > a {
    color: #ffe2c2;
}

/* sub_head */
.sub_head {
    position: relative;
    overflow: hidden;
}
.sub_head img {
    transform-origin: center center;
    animation: zoom 4s ease-in-out;
    animation-fill-mode: forwards;
    animation-iteration-count: 1;
}
.sub_head > div.center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
    z-index: 1;
    color: #fff;
    width: 100%;
    text-align: center;
}
.sub_head h2 {
    font-size: 46px;
    font-weight: 400;
    margin-bottom: 12px;
}
.sub_head h2 span {
    color: #ffc98f;
    font-weight: 700;
}
.sub_head h2 small {
    font-size: 46px;
    font-weight: 400;
}
.sub_head p {
    font-size: 22px;
    font-weight: 300;
}
@keyframes zoom {
    0% {
        -moz-transform: scale(1.2);
        transform: scale(1.2);
        -webkit-transform: scale(1.2);
        -ms-transform: scale(1.2);
        -ms-filter: "progid:DXImageTransform.Microsoft.Matrix(M11=1.0, M12=0, M21=0, M22=1.0, SizingMethod='auto expand')";
        filter: progid: DXImageTransform.Microsoft.Matrix(M11=1.0, M12=0, M21=0, M22=1.0, SizingMethod='auto expand');
    }

    100% {
        -moz-transform: scale(1);
        transform: scale(1);
        -webkit-transform: scale(1);
        -ms-transform: scale(1);
        -ms-filter: "progid:DXImageTransform.Microsoft.Matrix(M11=1.5, M12=0, M21=0, M22=1.5, SizingMethod='auto expand')";
        filter: progid: DXImageTransform.Microsoft.Matrix(M11=1.5, M12=0, M21=0, M22=1.5, SizingMethod='auto expand');
    }
}

/* sub_menu */
.sub_menu {
    text-align: center;
    padding-top: 58px;
    background-color: #fff;
}
.sub_menu ul {
    display: flex;
    align-items: center;
    border: 1px solid #707070;
    border-radius: 20px 20px 0px 0px;
    margin-top: 67px;
}
.sub_menu li {
    width: 25%;
    display: block;
    position: relative;
}
.sub_menu a {
    font-size: 22px;
    font-weight: 500;
    color: #222;
    width: 100%;
    line-height: 100px;
    display: inline-block;
}
.sub_menu a:hover {
    font-weight: 700;
    color: #cb9d6c;
}
.sub_menu li:after {
    content: '';
    position: absolute;
    right: 0px;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 64px;
    background-color: #707070;
}
.sub_menu li:last-child::after {
    display: none;
}
.sub_menu img {
    transform: translateY(0px);
    animation: arrow 2s ease-in-out infinite;
}
@keyframes arrow {
    0% {
        transform: translateY(0px);
        opacity: 1;
    }
    /* 50% {
                    transform: translateY(-10px);
                    opacity: 1;
                } */
    100% {
        transform: translateY(30px);
        opacity: 0;
    }
}