@font-face {
	font-family: 'kohinoor';
	src: url('./KohinoorBangla.ttf');
	font-weight: normal;
	font-style: normal;
	font-display: block;
}

@font-face {
	font-family: 'jetbrains';
	src: url('./JetBrainsMono-ExtraLight.ttf');
	font-weight: normal;
	font-style: normal;
	font-display: block;
}


* {
	margin: 0;
	padding: 0;
}

ul {
	list-style: none;
}

a {
	text-decoration: none;
}

.spline {
	background-color: #eee;
	height: 1px;
	margin: 20px 0;
}

.page-about {
	height: 100vh;
	position: relative;
}

.about-top {
	/* background-color: #e6e6e6; */
	/* border-bottom: 1px solid #e6e6e6; */
	position: fixed;
	top: 0;
	width: 100vw;
	height: 60px;
	align-items: center;
	padding: 0 40px;
	box-sizing: border-box;
	display: flex;
	overflow: hidden;
	z-index: 9;
	user-select: none;
	box-shadow: 0 1px 7px rgba(0, 0, 0, 0.1);
	background-image: linear-gradient(88deg, #93d7ffad, #4dbcf896, #1b90e4ad);
}

.about-top:after {
	content: "";
	width: 470px;
	height: 470px;
	border-radius: 50%;
	position: absolute;
	right: -110px;
	top: 20px;
	opacity: 0.5;
	background-image: linear-gradient(-90deg, transparent, #5ac5ff, #1b90e4);
}

.about-top:before {
	content: "";
	width: 500px;
	height: 300px;
	border-radius: 300px;
	background-color: #fff;
	position: absolute;
	left: -100px;
	top: -220px;
	opacity: 0.5;
	background-image: linear-gradient(88deg, #93d7ff 30%, #4dbcf8, #68c0ff);
}

.about-top .top-logo {
	width: 75px;
	height: 60px;
	display: flex;
	justify-content: flex-end;
	overflow: hidden;
	align-items: center;
	position: relative;
	z-index: 1;
}

.about-top .top-logo a {
	display: block;
	padding: 5px 0 0;
}

.about-top>p {
	padding: 0 0 0 20px;
	font-size: 17px;
	color: #1c4d67;
	position: relative;
	z-index: 1;
}

.about-side {
	width: 240px;
	border-right: 1px solid #e6e6e6;
	height: 100%;
	padding: 28px 40px 0 40px;
	box-sizing: border-box;
	overflow-y: auto;
	position: fixed;
	top: 60px;
	background-color: #f6f6f6;
}

.about-side ul {}

.about-side ul li {
	padding: 4px 0;
}

.about-side ul li:last-child {
	border: none;
}

.about-side ul li a {
	display: flex;
	align-items: center;
	font: bold 14px/31px "kohinoor", "Helvetica Neue", Helvetica, Arial, sans-serif;
	color: #333;
	padding: 0 10px 0 20px;
}

.about-side>ul>li>a {
	border-radius: 6px;
	background-image: linear-gradient(45deg, #dadbdc, #e3e4e5, #d6d7d8);
}

.about-side>ul>li>a:hover {
	background-image: linear-gradient(-48deg, #aaa, #ccc 50%, #bbb);
	text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
	box-shadow: 0 0 10px rgba(0, 0, 0, 0.1) inset;
}

.about-side>ul>li.active>a {
	background-image: linear-gradient(-48deg, #2da7ff, #7ec9ff 50%, #6bcbff);
	color: #fff;
	box-shadow: 0 0 13px rgba(20, 127, 192, 0.5) inset;
	text-shadow: 1px 1px 3px #1b90e4;
}

.about-side ul li i {
	margin: -2px 10px 0 0;
	position: relative;
	opacity: 0.8;
	font-size: 15px;
}

.about-side ul li ul {
	padding: 6px 0 0;
}

.about-side ul li ul li {
	border: none;
	padding: 0;
}

.about-side ul li ul li a {
	font-size: 14px;
	font-weight: normal;
	line-height: 30px;
	color: #454647;
}

.about-side ul li ul li a:before {
	content: "✰";
	padding: 0 13px 0 2px;
	color: #9ca9b3;
	font-size: 12px;
}

.about-side ul li ul li a:hover {
	color: #e44127;
}



.about-main {
	padding: 60px 40px 40px 280px;
	box-sizing: border-box;
}



/** main */

.about-main p {
	font: normal 15px/24px "kohinoor";
	color: #232323;
	padding: 5px 0;
	min-height: 10px;
}

.about-main h2,
.about-main h3 {
	color: #3ba8ef;
}

.about-main h2 {
	font: normal 24px/32px "Helvetica Neue", Helvetica, Arial, sans-serif;
	padding: 0 0 20px;
}

.about-main h3 {
	font: normal 18px/32px "Helvetica Neue", Helvetica, Arial, sans-serif;
	padding: 0 0 20px;
}

.about-main .block {
	padding: 90px 0 30px;
	border-bottom: 1px solid #eee;
}

.about-main .block:first-child {
	padding: 30px 0;
}

.about-main a {
	color: rgb(67, 121, 176);
	padding: 0 2px;
	font-family: "kohinoor", "Microsoft YaHei";
	text-decoration: underline;
}

.about-main .hide {
	visibility: hidden;
}

.about-main .strong {
	font-weight: bold;
}

.about-main .fs {
	font-size: 13px;
}

.about-main .fb {
	font-size: 16px;
}

.about-main .green {
	color: #188e51;
}

.about-main .orange {
	color: #e47433;
}

.about-main .gray {
	color: #ccc;
}

.about-main ul li {
	line-height: 33px;
	list-style: disc inside;
	font-size: 14px;
	color: #232323;
}

.about-main ul.num li {
	line-height: 33px;
	list-style: decimal inside;
	font-size: 14px;
	color: #232323;
}

.about-main ul li p {
	padding: 0;
}

.about-main ul.site-url li p {
	display: flex;
}

.about-main ul.site-url li p span {
	width: 50px;
}

.about-main #compare ul.site-url li p a {
	width: 160px;
	font-family: 'verdana';
}

.about-main ul.site-url li p b {
	font-weight: normal;
	font-size: 12px;
	color: #ccc;
}

.img-group img {
	float: left;
	border-radius: 13px;
	margin: 10px 10px 0 0;
}

.img-group p {
	padding: 10px 0 0;
	clear: both;
	font-size: 13px;
	color: #999;
}

.img-group p+p {
	padding: 0;
}

.about-main #compare a {
	font-family: 'Lucida Sans';
	text-decoration: none;
}

.img-group:after {
	content: "";
	display: block;
	clear: both;
}






.browser dl {
	display: flex;
	width: 840px;
}

.browser dl dd {
	flex: 1;
}

.browser dl dd a {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-self: center;
	text-decoration: none;
}

.browser dl dd span {
	background-image: url('../images/browser.png');
	background-size: 560px auto;
	display: block;
	width: 80px;
	height: 80px;
}

.browser dl dd:nth-child(1) span {
	background-position: 0 0;
}

.browser dl dd:nth-child(2) span {
	background-position: -80px 0;
}

.browser dl dd:nth-child(3) span {
	background-position: -160px 0;
}

.browser dl dd:nth-child(4) span {
	background-position: -240px 0;
}

.browser dl dd:nth-child(5) span {
	background-position: -320px 0;
}

.browser dl dd:nth-child(6) span {
	background-position: -400px 0;
}

.browser dl dd:nth-child(7) span {
	background-position: -480px 0;
}

.browser dl dd p {
	font: normal 12px/40px verdana;
	color: #888;
}