* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

@font-face {
	font-family: 'Cormorant Garamond';
	src: local('Cormorant Garamond Regular'),
		 local('CormorantGarmaond-Regular'),
	     local('Cormorant Garamond'),
		 url('../fonts/cormorant-garamond.woff2') format('woff2');
	unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02C6, U+02DA, U+02DC, U+2000-206F, U+2074, U+20AC, U+2212, U+2215;
}

html, body { overflow: hidden; height: 100%; }

body {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background: url(../img/logo-ps.svg) center center / contain no-repeat fixed, rgba(173, 151, 56, 0.68);
    color: rgba(250,250,250,1);
    transform: translateZ(0px);
}


h1, h2, h3, h4, h5, h6 {
    font-family: 'Cormorant Garamond';
}
h1 {
    font-size: 2rem;
}

:link,
:visited {
    color: rgba(255,255,255,.8);
    text-decoration: none;
    font-family: 'Cormorant Garamond';
    font-weight: 600;
    text-transform: capitalize;
}

article {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 3rem;
    height: auto;
    vertical-align: middle;
    color: rgba(0,0,0,.98);
}


iframe {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    max-height: 100%;
    margin: 0;
    padding: 0;
    border: none;
}
.fold:hover iframe {
    overflow-x: hidden;
}

.folds {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    bottom: 0;
}

.fold {
    display: inline-block;
    flex-flow: row wrap;
    background: rgba(0,100,200,.31);
    color: rgba(45, 0, 93, 0.7);
    width: 15%;
    height: 100%;
    max-height: 100%;
    margin-left: -5%;
    border: 2px solid;
    overflow: hidden;
    transform-style: preserve-3d;
    transform: translateZ(0);
    position: relative;
    bottom: 0;
    transition: 250ms ease-in all;
    z-index: 2;
}

.fold.right {
    float: right;
    margin-left: -5%;
}

.fold:hover {
    position: relative;
    width: 50%;
    margin-left: -10%;
    transform: rotateZ(0deg);
    z-index: 7;
    opacity: 1;
    background-opacity: 1;
    background: rgba(0,100,200,.81);
    height: 100%;
    bottom: 1.5rem;
    top: 0;
}
.fold article {
    display: none;
    position: absolute;
}
.fold:hover article {
    display: block;
    bottom: 2rem;
}

/* DPDG */
.fold:nth-child(1) {
    transform: rotateZ(-3deg);
    z-index: 4;
}
.fold:nth-child(1):hover {
    margin-left: 0;
    transform: rotateZ(0deg) translateX(5%) scale(1);
    z-index: 7;
}
.fold:nth-child(1):hover > article {
    display: block;
    top: 50%;
    width: 80%;
    margin: 2rem auto;
    padding: 2rem;
}

/* VDO */
.fold:nth-child(2) {
    transform: rotateZ(2deg);
    z-index: 5;
}
.fold:nth-child(2):hover {
    margin-left: 0;
    transform: rotateZ(0deg) translateX(5%) scale(1);
    z-index: 7;
}
/* QW */
.fold:nth-child(3) {
    transform: rotateZ(-1deg);
    z-index: 6;
}
.fold:nth-child(3):hover {
    margin-left: 0;
    transform: rotateZ(0deg) translateX(5%) scale(1);
    z-index: 7;
}
/* .fold.right */
/* KRTO */
.fold:nth-child(4) {
    transform: rotateZ(2deg);
    z-index: 6;
}
.fold:nth-child(4):hover {
    margin-right: 0;
    transform: rotateZ(0deg) translateX(-5%) scale(1);
    z-index: 7;
}
/* β×λ */
.fold:nth-child(5) {
    transform: rotateZ(1deg);
    z-index: 5;
}
.fold:nth-child(5):hover {
    margin-right: 0;
    transform: rotateZ(0deg) translateX(-5%) scale(1);
    z-index: 7;
}
/* SFYW */
.fold:nth-child(6) {
    transform: rotateZ(-1deg);
    z-index: 4;
}
.fold:nth-child(6):hover {
    margin-right: 0;
    transform: rotateZ(0deg) translateX(-5%) scale(1);
    z-index: 7;
}

.fold:nth-child(odd) .bg {
    transform-origin: 0 0;
    background: url(../img/w1.svg) top left repeat-y,
    url(../img/w2.svg) top left repeat-y,
    url(../img/w3.svg) top left / 10% repeat-y,
    url(../img/w4.svg) top left / 10% repeat-y, 
    rgba(0,0,0,1);
    background-attachment: fixed;
    background-size: contain;
    animation: flow-y 40s infinite ease-in-out;
}

.fold:nth-child(odd) .bg::before {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: -1;
    opacity: 0.8;
    transform-origin: 0 0;
    background: url(../img/w1.svg) center center repeat-y,
    url(../img/w2.svg) left center repeat-y,
    url(../img/w3.svg) left center repeat-y,
    url(../img/w4.svg) center center repeat-y, 
    rgba(0,255,0,.7);
    background-attachment: fixed;
    background-size: contain;
    animation: flow-r 40s infinite ease-in-out;
}

@keyframes flow-y {
    50% { background-position: 0 11rem , 0 -22rem, 0 55rem, 0 -110rem, 0 30rem;  }
}
@keyframes flow-r {
    50% { background-position: 0 -1rem , 0 2rem, 0 -5rem, 0 10rem, 0 -30rem;  }
}

nav {
    position: fixed;
    z-index: 50;
    bottom: 0;
    width: 100%;
    background: rgba(90,60,20,.9);
    display: flex;
    flex-flow: row wrap;
    justify-content: flex-end;
}

@media screen and (max-width: 1024px) {
    nav {
	justify-content: space-around;
    }
}
@media screen and (max-width: 640px) {
    nav {
	flex-flow: column wrap;
	width: 0%;
    }
    nav li {
	display: block;
    }
}

nav > ul {
    display: block;
    list-type: none;
    padding: 0.5rem;
    background: rgba(200,120,40,.4);
}
nav li {
    margin: 0;
    display: inline-block;
    padding: 0;
    
}