.header-bar {
    animation: fade-down 1.5s 2.5s ease-in-out forwards;
    opacity: 0;
}

/* 인트로 화면 */
.intro {
    position: fixed;
    top: 0%;
    left: 0%;
    width: 100vw;
    height: 100vh;
    z-index: 9999;
    overflow-x: hidden;
}

.intro .mask {
    position: absolute;
    animation: maskExpand 1s 2.5s ease-in-out forwards;
    background: url(../img/mask.png);
    background-size: cover;
    background-position: center center;
    z-index: 1;
    overflow: hidden;
    width: 100%;
    height: 100%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.intro .inner {
    position: relative;
    width: 100%;
    height: 100%;
}

.intro .inner .visual {
    position: absolute;
    background-color: #f9b9b9;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100vw;
    height: 100vh;
    animation: visual 2.5s ease-out forwards;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.intro .inner .visual img {
    max-width: 500px;
    width: 80%;
    display: block;
}

#main_section {
    background: url('../img/main_bg.jpg') center/cover no-repeat;
}

#main_section .section-inner {
    justify-content: start;
}

#main_section .section-inner hgroup {

    transform: translateY(100px);
}

#main_section .section-inner hgroup .tit-bx {
    color: #fff;
}

#main_section .section-inner hgroup a {
    background-color: #fff;
    color: #1d1d1d;
}

#main_section .section-inner hgroup a:hover {
    background-color: #1d1d1d;
    color: #fff;
}

#headers .header-bar .heade-inner .btn-wrap .btn-ebook {
    color: #fff;
}

#headers .header-bar.on .heade-inner .btn-wrap .btn-ebook {
    color: #000;
}

#headers .header-bar .heade-inner .btn-wrap .btn-submenu span {
    background-color: #fff;
}

#headers .header-bar.on .heade-inner .btn-wrap .btn-submenu span {
    background-color: #000;
}

#headers .header-bar .heade-inner .logo-wrap .logo {
    filter: brightness(0) saturate(100%) invert(100%) sepia(0%) saturate(0%) hue-rotate(5deg) brightness(102%) contrast(102%);
}

#headers .header-bar.on .heade-inner .logo-wrap .logo {
    filter: unset;
}

#headers .header-bar .heade-inner .logo-wrap p {
    color: #fff;
}

#headers .header-bar.on .heade-inner .logo-wrap p {
    color: #000;
}

/* 사각형이 커지는 애니메이션 */
@keyframes maskExpand {
    0% {
        width: 100vw;
        height: 100vh;
        opacity: 1;
    }

    100% {
        width: 700vw;
        height: 700vh;
        opacity: 1;
    }
}

/* 사각형이 커지는 애니메이션 */
@keyframes zoom-in {
    0% {
        scale: 1.2;
    }

    100% {
        scale: 1;
    }
}

@keyframes visual {
    0% {
        display: flex;
    }

    100% {
        display: none;
    }
}


@keyframes fade-up {
    0% {
        opacity: 0;
        transform: translateY(50px);
    }

    100% {
        opacity: 1;
        transform: translateY(0px);
    }
}

@keyframes fade-up02 {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }

    100% {
        opacity: 1;
        transform: translateY(0px);
    }
}


@keyframes fade-down {
    0% {
        top: -300px;
        opacity: 0;
    }

    100% {
        top: 0;
        opacity: 1;
    }
}

@media screen and (max-width: 768px) {
    .intro .mask {
        background: url(../img/mask_mo.png);
        background-size: cover;
        background-position: center center;
    }

    #main_section {
        background: url('../img/main_bg_mo.jpg') center/cover no-repeat;
    }

    #main_section .section-inner hgroup {
        transform: translateY(200px);
    }
}