html{
	color:#000;
	background:#FFF;
}
body, div, dl, dt, dd, ul, ol, li, h1, h2, h3, h4, h5, h6, pre, code, form, fieldset, legend, input, textarea, p, blockquote, th, td{
	margin:0;
	padding:0;
}
table{
	border-collapse: collapse;
	border-spacing: 0;
}
fieldset, img{
	border: 0;
}
address, caption, cite, code, dfn, em, strong, th, var{
	font-style: normal;
	font-weight: normal;
}
li{
	list-style:none;
}
caption, th{
	text-align:left;
}
h1, h2, h3, h4, h5, h6{
	font-size: 100%;
	font-weight: normal;
}
q:before, q:after{
	content: '';
}
abbr, acronym{
	border: 0;
	font-variant: normal;
}
sup{
	vertical-align: text-top;
}
sub{
	vertical-align: text-bottom;
}
input, textarea, select{
	font-family: inherit;
	font-size: inherit;
	font-weight: inherit;
}
input, textarea, select{
	*font-size: 100%;
}
legend{
	color: #000;
}
html, body{
	font-family: Tahoma, Verdana, Arial, Helvetica, sans-serif;
	width: 100%;
	height: 100%;
}

.clearfix:after{
	content: "/20";
	display: block;
	height: 0;
	overflow: hidden;
	clear: both;
}

.clearfix{
	zoom: 1;
}

html, body{
	width: 100%;
	height: 100%;
	background: #101418;
	overflow: hidden;
	touch-action: none;
	overscroll-behavior: none;
	-webkit-user-select: none;
	user-select: none;
	-webkit-tap-highlight-color: transparent;
}

body{
	position: relative;
}

em{
	display: none;
}

#extra, #view{
	position: absolute;
	left: 0;
	top: 0;
	width: 640px;
	height: 480px;
	margin: 0;
	text-align: left;
	background: #fff;
	/* 由 JS 计算 translate + scale 实现横屏满铺自适应 */
	transform-origin: 0 0;
	will-change: transform;
}

#view{
	display: block;
	background: transparent url(blank.gif) repeat 0 0;
	cursor: default;
	z-index: 20;
}

#extra{
	background: #000;
}

#extra .layer{
	position: absolute;
	left: 0;
	top: 0;
	width: 640px;
	height: 480px;
	z-index: 10;
}

#fork{
	display: none;
}

#desc{
	display: none;
}

#browser{
	display: none;
}

/* 竖屏提示：请横屏体验更佳（点击可关闭） */
#rotate-hint{
	display: none;
	position: fixed;
	left: 0;
	right: 0;
	bottom: 0;
	z-index: 9999;
	padding: 10px 14px;
	background: rgba(0, 0, 0, .72);
	color: #fff;
	font-size: 13px;
	line-height: 1.5;
	text-align: center;
	backdrop-filter: blur(6px);
	-webkit-backdrop-filter: blur(6px);
}

#rotate-hint b{
	color: #ffd84d;
	font-weight: 700;
}

@media (orientation: portrait){
	#rotate-hint.is-on{
		display: block;
	}
}