article,aside,details,figcaption,figure,footer,header,hgroup,main,nav,section,summary{display:block;}audio,canvas,video{display:inline-block;}audio:not([controls]){display:none;height:0;}[hidden]{display:none;}html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%;}body{margin:0;}a:focus{outline:thin dotted;}a:active,a:hover{outline:0;}h1{font-size:2em;margin:0.67em 0;}abbr[title]{border-bottom:1px dotted;}b,strong{font-weight:bold;}dfn{font-style:italic;}hr{-moz-box-sizing:content-box;box-sizing:content-box;height:0;}mark{background:#ff0;color:#000;}code,kbd,pre,samp{font-family:monospace,serif;font-size:1em;}pre{white-space:pre-wrap;}q{quotes:"\201C" "\201D" "\2018" "\2019";}small{font-size:80%;}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline;}sup{top:-0.5em;}sub{bottom:-0.25em;}img{border:0;}svg:not(:root){overflow:hidden;}figure{margin:0;}fieldset{border:1px solid #c0c0c0;margin:0 2px;padding:0.35em 0.625em 0.75em;}legend{border:0;padding:0;}button,input,select,textarea{font-family:inherit;font-size:100%;margin:0;}button,input{line-height:normal;}button,select{text-transform:none;}button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer;}button[disabled],html input[disabled]{cursor:default;}input[type="checkbox"],input[type="radio"]{box-sizing:border-box;padding:0;}input[type="search"]{-webkit-appearance:textfield;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;box-sizing:content-box;}input[type="search"]::-webkit-search-cancel-button,input[type="search"]::-webkit-search-decoration{-webkit-appearance:none;}button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0;}textarea{overflow:auto;vertical-align:top;}table{border-collapse:collapse;border-spacing:0;}
*,
*::after,
*::before {
	box-sizing: border-box;
}

:root {
	font-size: 14px;
}

body {
	--color-text: #51515a;
	--color-bg: #0e0e0f;
	--color-link: #51515a;
	--color-link-hover: #dd176c;
	--color-nav: #fff;
	--color-title: #fff;
	--color-shape: #1b1b1c;
	color: #fff;
	color: var(--color-text);
	background-color: #121212;
	background-color: var(--color-bg);
	font-family: Futura, "futura-pt", Arial, sans-serif;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	overflow: hidden;
}

.demo-2 {
	--color-text: #b7b7b7;
	--color-bg: #f1f1f1;
	--color-link: #b7b7b7;
	--color-link-hover: #000;
	--color-nav: #000;
	--color-title: #da1061;
	--color-shape: #e4e4e4;
}

a {
	text-decoration: none;
	color: var(--color-link);
	outline: none;
}

a:hover,
a:focus {
	color: var(--color-link-hover);
	outline: none;
}

/* Page Loader */
.js .loading::before {
	content: '';
	position: fixed;
	z-index: 100000;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: var(--color-bg);
}

.js .loading::after {
	content: '';
	position: fixed;
	z-index: 100000;
	top: 50%;
	left: 50%;
	width: 60px;
	height: 60px;
	margin: -30px 0 0 -30px;
	pointer-events: none;
	border-radius: 50%;
	opacity: 0.4;
	background: var(--color-link);
	animation: loaderAnim 0.7s linear infinite alternate forwards;
}

@keyframes loaderAnim {
	to {
		opacity: 1;
		transform: scale3d(0.5,0.5,1);
	}
}


/*  核心样式开始  */
.slideshow {
	height: 500px;
	display: grid;
	grid-template-rows: calc(500px - 10rem) 5rem;
	grid-template-columns: 100%;
	align-items: center;
	justify-items: center;
}

.slide {
	position: relative;
	min-width: 250px;
	max-width: 500px;
	width: 50vw;
	height: 100%;
	opacity: 0;
	pointer-events: none;
	grid-area: 1 / 1 / 2 / 2;
}

.demo-2 .slide {
	grid-area: 1 / 1 / 2 / 2;
}

.slide--current {
	opacity: 1;
	pointer-events: auto;
}

.slide__image {
	position: relative;
	width: 100%;
	height: 100%;
	background-size: cover;
}

.slide__image--hidden {
	opacity: 0;
	pointer-events: none;
}

.slide__title {
	margin: 0;
	position: absolute;
	line-height: 1;
	color: var(--color-title);
}

.demo-1 .slide__title {
	font-weight: normal;
	top: 10vh;
	left: 1rem;
	font-size: 7vw;
}

.demo-2 .slide__title {
	-webkit-writing-mode: vertical-rl;
	writing-mode: vertical-rl;
	left: calc(50% - 5.25vh);
	font-size: 7vh;
	height: 100%;
	text-align: center;
}

.slide__title span {
	display: inline-block;
	white-space: pre;
}

.slide__title--hidden {
	opacity: 0;
	pointer-events: none;
}

.nav {
	position: relative;
	grid-area: 2 / 1 / 3 / 2;
}

.nav__button {
	border: 0;
	background: none;
	margin: 0 1rem;
	padding: 0;
	display: inline-block;
	color: var(--color-nav);
}

.nav__button:focus {
	outline: none;
}

.deco {
	position: absolute;
}

.deco--bg {
	overflow: hidden;
	opacity: 0;
	background-image: url(../img/noise1.png);
	position: absolute;
	height: 300%;
	width: 300%;
	left: -100%;
	top: -100%;
	animation-name: grained;
	animation-iteration-count: infinite;
	animation-duration: 0.5s;
	animation-timing-function: steps(20, end);
	transition: opacity 0.3s;
}

.deco--bg-vert {
	background-image: url(../img/noise2.png);
}

@keyframes grained {
	0% { transform: translate(-10%, 10%); }
	10% { transform: translate(-25%, 0%); }
	20% { transform: translate(-30%, 10%); }
	30% { transform: translate(-30%, 30%); }
	40% { transform: translate(0%,0%); }
	50% { transform: translate(-15%, 10%); }
	60% { transform: translate(-20%, 20%); }
	70% { transform: translate(-5%, 20%); }
	80% { transform: translate(-25%, 5%); }
	90% { transform: translate(-30%, 25%); }
	100% { transform: translate(-10%, 10%); }
}

.deco--shape {
	opacity: 0;
	background: var(--color-shape);
	transform-origin: 50% 50%;
	animation-iteration-count: infinite;
	animation-direction: alternate;
	animation-duration: 0.15s;
	animation-timing-function: linear;
}

.deco--shape-hor {
	left: 0;
	width: 100vw;
	transform: scale3d(1,0.2,1);
	animation-name: vibrateHorizontal;
}

.deco--shape-ver {
	top: 0;
	height: 100vw;
	transform: scale3d(0.2,1,1);
	animation-name: vibrateVertical;
}

.deco--shape-1 {
	animation-delay: 0.05s;
}

@keyframes vibrateHorizontal {
	0% { transform: scale3d(1,0.2,1); }
	100% { transform: scale3d(1,1,1); }
}

@keyframes vibrateVertical {
	0% { transform: scale3d(0.2,1,1); }
	100% { transform: scale3d(1,1,1); }
}

.deco--shape-hor.deco--shape-1 {
	bottom: 40vh;
	height: 10vh;
}

.deco--shape-hor.deco--shape-2 {
	bottom: 10vh;
	height: 20vh;
}

.deco--shape-ver.deco--shape-1 {
	width: 5vw;
	left: 15vw;
}

.deco--shape-ver.deco--shape-2 {
	width: 15vw;
	left: 25vw;
}

.show-deco .deco {
	opacity: 1;
}

@media screen and (min-width: 53em) {
	.slideshow {
		padding: 5rem 0 0 0;
		height: 100vh;
		justify-content: center;
		grid-template-rows: calc(100vh - 10rem) 5rem;
	}
	.demo-1 .slide__title {
		left: -10vw;
	}
	.demo-2 .slideshow {
		grid-template-columns: auto 0;
		grid-template-rows: calc(100vh - 10rem);
	}
	.demo-2 .nav {
		grid-area: 1 / 2 / 2 / 3;
		width: 12rem;
		align-self: end;
		transform: rotate(90deg) translateY(-2.5rem) translateX(-3rem);
	}
	.demo-2 .slide__title {
		font-size: 11vh;
	}
}