* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	text-decoration: none;
	overflow-wrap: break-word;
	-webkit-tap-highlight-color: transparent;
	/*设置光标
	cursor: default;
	*/
	/*网页变灰
	filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
	-webkit-filter: grayscale(100%);
	*/
}

/*目的是在内容不能占满屏幕时备案号也能在屏幕底部 ↓ */
html, body {
	margin: 0;
	padding: 0;
}

body {
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-orient: vertical;
	-webkit-box-direction: normal;
	-ms-flex-direction: column;
	flex-direction: column;
	min-height: 100vh;
}

main {
	-ms-flex: 1 0 auto;
	flex: 1 0 auto;
	width: 100%;
	margin: 1rem 0;
}
/*目的是在内容不能占满屏幕时备案号也能在屏幕底部 ↑ */

hr {
	margin-top: 10px;
	margin-bottom: 10px;
	border: 0;
	border-top: 1px solid rgba(0, 0, 0, 0.1);
}

img {
	vertical-align: middle;
	border-style: none;
}

h1, h2 {
	margin-bottom: 0.5rem;
	font-family: inherit;
	font-weight: 500;
	line-height: 1.2;
	color: inherit;
}

h1 {
	font-size: 32px;
}

h2 {
	font-weight: 500;
	font-size: 26px;
}

a {
	color: #007bff;
	background-color: transparent;
	-webkit-text-decoration-skip: objects;
}

a:hover {
	color: #0056b3;
}

/*导航栏样式*/
.navbar {
	position: fixed;
	left: 0;
	top: 0;
	width: 100%;
	background-color: #FFFFFF;
	box-shadow: 0 5px 5px rgba(0, 0, 0, 0.1);
	/*透明和模糊效果
	background: rgba(255, 255, 255, 0.8);
	backdrop-filter: blur(15px);
	*/
	z-index: 999;
}

.nav-content {
	width: 100%;
	margin-right: auto;
	margin-left: auto;
	margin-top: 4px;
	margin-bottom: 4px;
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-ms-flex-wrap: wrap;
	flex-wrap: wrap;
	-webkit-box-align: center;
	-ms-flex-align: center;
	align-items: center;
	-webkit-box-pack: justify;
	-ms-flex-pack: justify;
	justify-content: space-between;
}

.navbar-brand {
	color: #FFFFFF;
	margin-left: 16px;
}

.navbar-brand img {
	width: 60px;
	height: 60px;
}

.nav-links {
	font-size: 18px;
	font-weight: 600;
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-orient: vertical;
	-webkit-box-direction: normal;
	-ms-flex-direction: column;
	flex-direction: column;
	padding-left: 0;
	margin-bottom: 0;
	list-style: none;
}

.nav-links {
	-webkit-box-orient: horizontal;
	-webkit-box-direction: normal;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;
}

.nav-links a {
	color: #464646;
	transition: color 0.2s;
}

.nav-links a:hover {
	color: #207FFF;
}

.nav-link {
	display: block;
	padding: 16px;
}

/*折叠菜单样式*/
.fold {
	display: none;
	cursor: pointer;
	padding: 10px;
	margin-right: 16px;
}

.fold span {
	display: block;
	width: 25px;
	height: 3px;
	background: #000000;
	margin: 5px 0;
	transition: 0.2s;
}

/*大图区域*/
.header {
	position: relative;
	height: 100vh;
	background: url(../images/header.jpg) no-repeat center center fixed;
	background-size: cover;
	overflow: hidden;
	color: #FFFFFF;
	text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
	z-index: 99;
}

.header h1 {
	font-size: 2.5rem;
	padding-bottom: 40px;
}

.header h2, .header h3 {
	font-size: 1.75rem;
}

/*黑色遮罩*/
.overlay {
	position: absolute;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, 0.7);
	color: #fff;
	display: -webkit-box;
	display: -ms-flexbox;
	display: -webkit-flex;
	display: flex;
	-webkit-box-align: center;
	-webkit-align-items: center;
	-ms-flex-align: center;
	align-items: center;
	-webkit-box-orient: vertical;
	-webkit-box-direction: normal;
	-webkit-flex-direction: column;
	-ms-flex-direction: column;
	flex-direction: column;
	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;
}

/*内容区域*/
.features {
	margin: auto;
	padding-top: 2rem;
}

.features-top {
	padding-top: 6rem;
}

/*卡片箱子*/
.card-bin {
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: distribute;
	justify-content: center;
	-ms-flex-wrap: wrap;
	flex-wrap: wrap;
}

/*主页项目的卡片*/
.project-card {
	color: #000000;
	background: #f5f5f5;
	-ms-flex: 1 0 300px;
	flex: 1 1 300px;
	margin: 10px;
	border-radius: 10px;
	overflow: hidden;
	box-shadow: 0 2px 10px rgba(0,0,0,0.1);
	transition: 0.3s;
}

.project-card:hover {
	box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.project-card a {
	color: #000000;
}

.project-card-image {
	height: 220px;
	background-size: cover;
	background-position: center;
}

.project-card-info {
	padding: 1.5rem;
}

.project-card-info h3 {
	margin-bottom: 0.5rem;
	font-weight: 600;
	font-size: 22px;
	color: #464646;
}

/*帮助页的卡片*/
.help-card {
	margin: 6px;
	position: relative;
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-orient: vertical;
	-webkit-box-direction: normal;
	-ms-flex-direction: column;
	flex-direction: column;
	min-width: 0;
	word-wrap: break-word;
	background-color: #F9F9F9;
	background-clip: border-box;
	border: 1px solid #DDDDDD;
	border-radius: 10px;
	overflow: hidden;
}

.help-card h3 {
	font-size: 20px;
	color: #464646;
}

.help-card-img {
	width: 100%;
	height: 180px;
	border-radius: 10px;
	overflow: hidden;
}

.help-card-content {
	padding: 16px;
	text-align: center;
	-webkit-box-orient: vertical;
	-webkit-box-direction: normal;
	-ms-flex-direction: column;
	flex-direction: column;
	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: justify;
	justify-content: space-between;
	font-size: 16px;
}

/*友情链接样式*/
.friendship {
	max-width: 1000px;
	margin: 20px auto;
}

.friendship-text {
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-webkit-box-orient: vertical;
	-webkit-box-direction: normal;
	-ms-flex-direction: row;
	flex-direction: row;
	-webkit-box-align: center;
	-webkit-align-items: center;
	-ms-flex-align: center;
	align-items: center;
	margin: 5px;
	border: 2px solid #027fff;
	border-radius: 40px;
	padding: 5px;
}

.friendship-text img {
	width: 36px;
	height: 36px;
	border-radius: 50%;
	border: 1px solid #DDDDDD;
	overflow: hidden;
}

.friendship-text p {
	font-size: 14px;
	color: #1E1E1E;
	margin: 0 10px;
}

/*文本内容展示左侧垂直线*/
.vertical-line {
	position: relative;
	padding-left: 26px;
	margin: 14px 8px;
}

.vertical-line::before {
	content: '';
	position: absolute;
	left: 14px;
	top: 3px;
	bottom: 3px;
	width: 3px;
	background: #2196F3;
}

.vertical-line p {
	padding-top: 10px;
	padding-bottom: 10px;
}

/*更新日志样式*/
.log-item {
	border-radius: 10px;
	overflow: hidden;
	border: 1px solid #ddd;
	margin: 15px 0;
}

.log-question {
	background: #f5f5f5;
	padding: 15px;
	cursor: pointer;
	font-size: 1rem;
	color: #464646;
}

.log-answer {
	padding: 15px;
	display: none;
}

.log-answer p {
	margin: 8px;
	font-size: 16px;
}

.log-answer.show {
	display: block;
}

.log-answer-top {
	padding-top: 15px;
}

/*截图展示*/
.photo-show {
	margin: 0 20px 4rem 20px;
}

/*表格样式*/
.table {
	width: 100%;
	margin-bottom: 2rem;
	border-collapse: collapse;
}

.table th, .table td {
	padding: 14px;
	border: 1px solid #DDDDDD;
	vertical-align: top;
	border-top: 1px solid #dee2e6;
	text-align: center;
}

.table th {
	background-color: #f2f2f2;
}

.table tr:hover {
	background-color: #f5f5f5;
}

/* 按钮样式 */
.button {
	display: inline-block;
	padding: 8px 20px;
	background: #007bff;
	color: #FFFFFF;
	text-decoration: none;
	border-radius: 10px;
	margin-top: 15px;
	transition: background 0.3s;
}

.button:hover {
	color: #FFFFFF;
	background: #0069d9;
}

/*关于页面的布局*/
.row {
	display: -webkit-box;
	display: -ms-flexbox;
	display: flex;
	-ms-flex-wrap: wrap;
	flex-wrap: wrap;
	padding: 0 -16px;
}

.about-text {
	width: 100%;
	padding: 16px;
	margin-top: 1rem;
}

.about-text p {
	margin-top: 14px;
	margin-bottom: 14px;
	font-size: 15px;
}

.about-text-in {
	text-indent: 2rem;
}

/*Q&A样式*/
.qa {
	padding: 14px 0;
}

/*通用文字样式*/
.title-center {
	text-align: center;
}

.text-center {
	text-align: center !important;
}

.text-center img {
	margin-bottom: 24px;
}

.title-left {
	text-align: left;
}

.title-center, .title-left {
	margin-top: 2rem;
	margin-bottom: 1rem;
}

.p-title-center {
	text-align: center;
}

.p-title-left {
	text-align: left;
}

.p-title-center, .p-title-left {
	margin-bottom: 14px;
	font-weight: 300;
	font-size: large;
}

/*底部信息栏*/
footer {
	padding: 22px;
	width: 100%;
	background-color: #FFFFFF;
	color: #000000;
	box-shadow: 0 -5px 5px rgba(0, 0, 0, 0.1);
	text-align: center;
	/*目的是在内容不能占满屏幕时备案号也能在屏幕底部 ↓ */
	-ms-flex-negative: 0;
	flex-shrink: 0;
	/*目的是在内容不能占满屏幕时备案号也能在屏幕底部 ↑ */
}

.footer-margins {
	margin-top: 10px;
	margin-bottom: 10px;
	font-size: 14px;
}

/*固定内部宽度*/
.nav-content, .features {
	max-width: 1200px;
}

/*固定左右边距*/
.overlay, .features {
	padding-left: 30px;
	padding-right: 30px;
}

@media (max-width: 768px) {
	/*移动端导航栏样式*/
	.nav-links {
		-webkit-box-orient: vertical;
		-webkit-box-direction: normal;
		flex-direction: column;
		max-height: 0;
		overflow: hidden;
		transition: all 0.2s ease-in-out;
		-ms-flex-preferred-size: 100%;
		flex-basis: 100%;
		-webkit-box-flex: 1;
		-ms-flex-positive: 1;
		flex-grow: 1;
		-webkit-box-align: center;
		-ms-flex-align: center;
		align-items: center;
	}

	.nav-links.active {
		max-height: 100vh;
		padding-bottom: 16px;
	}

	/*移动端折叠菜单*/
	.fold {
		display: block;
	}

	.fold.active span:nth-child(1) {
		transform: rotate(45deg) translate(5px, 5px);
	}

	.fold.active span:nth-child(2) {
		opacity: 0;
	}

	.fold.active span:nth-child(3) {
		transform: rotate(-45deg) translate(7px, -6px);
	}
}

@media (min-width: 960px) {
	/*移动端关于页面布局*/
	.about-text {
		-webkit-box-flex: 0;
		-ms-flex: 0 0 50%;
		flex: 0 0 50%;
		max-width: 50%;
	}
}