@import url(https://fonts.googleapis.com/earlyaccess/notosanskr.css);
::-webkit-scrollbar {
    width: 0px;
  }

body, div, section, article, header, footer {
    
    color: rgb(58, 58, 58);
    margin: 0;
    padding: 0;
    
    box-sizing: border-box;
    font-family: "Noto Sans KR", sans-serif;
    text-align: center;
}

a {
    color: rgb(58, 58, 58);
    font-weight: 600;
    border-bottom: 2px solid #2c2c2c;
    text-decoration: none;
}

a:link {
    color: rgb(58, 58, 58);
}

a:visited {
    color: rgb(58, 58, 58);
}

a:hover {
    color: rgb(104, 104, 104);
}

a:active {
    background-color: rgb(104, 104, 104);
} 

a.blackbg {
    color: white;
    font-weight: 600;
    border-bottom: 2px solid white;
    text-decoration: none;
}

a.blackbg:link {
    color: white;
}

a.blackbg:visited {
    color: white;
}

a.blackbg:hover {
    color: rgb(167, 167, 167);
}

a.blackbg:active {
    background-color:white;
}


body{
    
    transition: 0.5s;
}

h1, h2, h3, p {
    box-sizing: border-box;
}

h2 {
    font-family: "Noto Sans KR", sans-serif;
    font-size: 21px;
    font-weight: 700;
    line-height: 140%;
    text-align: left;

    margin: 140px auto 30px auto;
}

p {
    font-size: 17px;
    font-weight: 400;
    line-height: 180%;
    text-align: left;
}

strong {
    font-weight: 600;
}

/* HEADER */
.header {
    width: 100%;
    height: 50px;


    z-index: 1000;
    position: fixed;
    top: 0;
    left: 0;
    text-align: center;

    padding: 10px 0;

    transition: 1s;
}

.headtoBlack {
    color: white;
    font-weight: 400;
    background-color: rgba(36, 36, 36, 1);;
    box-shadow: rgba(36, 36, 36, 1) 0px 0px 15px;
}
.headtoWhite {
    color: black;
    font-weight: 600;
    background-color: white;
    box-shadow: rgba(255, 255, 255, 1) 0px 0px 15px;

}

/* Article */

/* Prologue */

.scroll-graphic {
	overflow-x: hidden;
	position: sticky;
	top: 0;
	height: 100vh;
}
.graphic-item {
	display: flex;
	align-items: center;
	justify-content: center;
	position: absolute;
	left: 5%;
	top: 0;
	width: 90%;
	opacity: 0;
	transition: 1s;
	will-change: opacity;
}
.visible {
	opacity: 1;
}
.scene-img {
    height: 90vh;
    background-position: center top;
    background-repeat: no-repeat;
    background-size: cover;
}

.cliff-img {
    height: 200vh;
    background-position: 50% 50%;    
    background-repeat: no-repeat;
    background-size: cover;
}

.text-img {
    width: 100%;
}

.scroll-text {
	position: relative;
	padding-bottom: 1px;
}
.step {
    width: 380px;
    margin: 0 auto 80vh auto;
    padding: 1.3rem 1rem;
	background: rgba(255, 255, 255, 1);
    box-shadow: rgba(255, 255, 255, 1) 0px 0px 15px;
    border-style: solid;
    border-width: 2px;
}

.stepBlack {

    color: white;
	background: rgba(36, 36, 36, 1);
    box-shadow: rgba(36, 36, 36, 1) 0px 0px 15px;

}

.center {
    text-align: center;
}

.step p {
    margin: 0;
}


.bird {
	position: absolute;
	left: 0;
	bottom: 70%;
	width: 100px;
	transform: translateX(-100%);
	transition: 1.5s 0.5s linear;
}
[data-index="5"] .bird {
	left: 30%;
	bottom: 30%;
}

.graph {
    width: 520px;
}

.graph2 {
    width: 620px;
    margin: 0 auto;

}

/* Intro */

.intro{
    margin: 40px 0 60px 0;
    text-align: center;
    z-index: 100;
}

.intro h1 {
    color: rgb(48, 48, 48);
    margin: 10px 0;
    font-size: 50px;
    line-height: 120%;
    font-weight: 800;
}

.intro p {
    text-align: center;
}


.text {
    max-width: 520px;
    margin: 0 auto;
}


.floatText {
    max-width: 420px;
    margin: 0 auto;
    position: absolute;
    text-align: left;
    padding: 1.0rem 1.1rem;
    background: rgba(255, 255, 255, 1);
    box-shadow: rgba(255, 255, 255, 1) 0px 0px 15px;
    border-style: solid;
    border-width: 2px;
}

.whiteText {
    color: rgb(206, 206, 206);
    max-width: 520px;
    margin: 0 auto;
}

.highlight {
    font-weight: 600;
    border-bottom: 2px dotted #2c2c2c;
}

.highlightB {
    color: white;
    font-weight: 600;
    border-bottom: 2px dotted white;
}

/* Chapter */
.chapter {
    margin: 120px 0 60px 0;
    z-index: 100;
}

.chapter h2 {
    text-align: center;
    color: rgb(48, 48, 48);
    margin: 10px 0;
    font-size: 38px;
    line-height: 120%;
    font-weight: 800;
}

.toBlack {
    background-color: rgb(36, 36, 36);
}

.toWhite {
    background-color: rgb(255, 255, 255);
}


/* Credit */
.credit {
    margin: 50px auto 10px auto;
    color: white;
    font-weight: 600;
    font-size: 20px;
}

.creditList {
    margin: 10px auto 100px auto;
    color: white;
    text-align: left;
    width: 50%;
    float: left;
}

.articleList {
    margin: 20px auto 50px auto;
    color: white;
    text-align: left;
    
}


@media screen and (max-width: 640px)
{
    .graphic-item {
        width: 100%;
        left: 0;
    }
    .scene-img {
        height: 100vh;
    }

    .intro h1 {
        margin: 10px 0;
        font-size: 40px;
        line-height: 120%;
        font-weight: 800;
    }

    .text {
        padding : 0 20px;
    }

    .whiteText {
        padding: 0 20px;
    }


    .appear {
        width: 90vw;
    }
    .pan {
        width: 80vw;
        height: 50vw;
    }

    /* scroll contents */
    .step {
        width: 90%;
    }

    .text2 {
        max-width: 800px;
        margin: 0 auto;
        position: absolute;
    }

    .graph {
        width: 100%;
    }
    .graph2 {
        width: 100%;
    }

}