/* v2.0 | 20110126
http://meyerweb.com/eric/tools/css/reset/ 
License: none (public domain)
*/
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	/* font: inherit; */
	vertical-align: baseline;
	text-decoration : none;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
	display: block;
}
body {
	line-height: 1;
}
ol, ul {
	list-style: none;
}
blockquote, q {
	quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
	content: '';
	content: none;
}
table {
	border-collapse: collapse;
	border-spacing: 0;
}
.tab {
	width: 100%;
	padding: 15px 0;
	background: rgb(194, 160, 225);
}

.tab .tab_box {
	max-width: 900px;
	margin: 0 auto;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 4em 2em;
	text-align: center;
}

.tab_content {
	position: relative;
}

.tab_content:not(:last-child)::before {
	content: '';
	background-color: #fff;
	position: absolute;
	width: 2px;
	height: 3em;
	top: 50%;
	transform: translateY(-50%);
	right: -1em;
}
/* 适配 */

@media screen and (max-width: 900px)and (min-width:501px) {
	.counters>div {
		grid-template-columns: 1fr 1fr;
	}

	.counter:nth-child(2)::before {
		display: none;
	}

	.tab .tab_box {
		width: 31em;
		grid-template-columns: 1fr 1fr;
		text-align: center;

	}

	.tab_content:nth-child(2)::before {
		display: none;
	}

	.operations {
		margin: 0 auto;
		display: grid;
		grid-template-columns: 1fr 1fr;
		gap: 4em 2em;
	}

}
.tab_content p {
	line-height: 23px;
}
@media screen and (max-width: 500px) {
	.tab_content{
		display: flex;
		flex-direction: column;
	}
	.tab_content>h3{
		height: 40px !important;
		width: 100% !important;
		font-size: 20px !important;
		text-align: center !important;
	}

	.counters>div {
		grid-template-columns: 1fr;
		row-gap: 5em;
	}

	.counter:not(:last-child)::before {
		width: 90%;
		height: 2px;
		top: inherit;
		transform: translateY(-50%);
		right: 8em;
		bottom: -3em;
		left: 10%;

	}

	.tab .tab_box {
		grid-template-columns: 1fr;
		row-gap: 5em;
		width: 12em;
		text-align: center;
	}

	.tab_content:not(:last-child)::before {
		width: 90%;
		height: 2px;
		top: inherit;
		transform: translateY(-50%);
		right: 8em;
		bottom: -3em;
		left: 10%;

	}

	.operations {
		margin: 0 auto;
		display: grid;
		grid-template-columns: repeat(1, 1fr);
		grid-template-columns: 1fr;
		gap: 4em 2em;
	}

	.content .top-nav .top-nav-list a {
		padding: 0 0.1em;
		color: #fff;
	}

	.content .top-nav .logo {
		line-height: 5em;
		padding-left: 1em;
	}
}