/* 在线链接服务仅供平台体验和调试使用，平台不承诺服务的稳定性，企业客户需下载字体包自行发布使用并做好备份。 */
/* @font-face {
  font-display: swap;
  font-family: "soehne";
  font-weight: 400;
  font-style: normal;
  src: url("../font/soehne-buch.woff2") format("woff2");
}

@font-face {
  font-display: swap;
  font-family: "soehne";
  font-weight: 400;
  font-style: italic;
  src: url("../font/soehne-buch-kursiv.woff2") format("woff2");
} */

/* @import url(./font.css); */

:root {
	--primary-color: #3182ce;
	--text-color: #333333;
	--text-secondary: #666666;
	--text-tertiary: #888888;
	--bg-color: #ffffff;
	--bg-secondary: #f8f9fa;
	--border-color: #e2e8f0;
	--hover-color: #2c5282;
	--shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
	--shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
	--shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.05), 0 4px 6px rgba(0, 0, 0, 0.05);
	--content-width: 830px;
	--radius-sm: 4px;
	--radius-md: 8px;
	--radius-lg: 12px;
	--spacing-xs: 4px;
	--spacing-sm: 8px;
	--spacing-md: 16px;
	--spacing-lg: 24px;
	--spacing-xl: 32px;
	--spacing-2xl: 48px;
	--transition-normal: all 0.3s ease;
}

html {
	color: var(--text-color);
	background: var(--bg-secondary);
	scroll-behavior: smooth;
	-ms-text-size-adjust: 100%;
	-webkit-text-size-adjust: 100%;
	-moz-text-size-adjust: 100%;
	text-size-adjust: 100%;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	transition: var(--transition-normal);
	/* 背景可以换成更细微的纹理或者去掉 */
	background-image: url('https://framerusercontent.com/images/NPRn2BR0kDn1qMi5KZMZFGNJBnU.png');
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial,
		sans-serif;
}

body {
	max-width: var(--content-width);
	padding: 0 var(--spacing-xl);
	margin: 0 auto;
	background-color: var(--bg-color);
	box-shadow: var(--shadow-md);
	line-height: 1.6;
}

* {
	-webkit-tap-highlight-color: transparent;
	box-sizing: border-box;
}

ol,
ul {
	list-style: none;
	padding: 0;
	margin: 0;
}

p,
h1,
h2,
h3,
h4,
h5,
ul,
ol,
li,
blockquote {
	padding: 0;
	margin: 0;
}

a {
	color: inherit;
	text-decoration: none;
	transition: var(--transition-normal);
}

input,
select,
textarea {
	font-family: inherit;
	outline: 0;
	-webkit-appearance: none;
	-moz-appearance: none;
	appearance: none;
	border: none;
	border-radius: var(--radius-sm);
}

pre,
code {
	font-family: 'JetBrains Mono', Menlo, Monaco, Consolas, 'Courier New', monospace;
}

input:-webkit-autofill {
	/* 自动填充的文本颜色 */
	-webkit-text-fill-color: var(--text-color) !important;

	/* 方式2：通过延迟一个月，取消自动填充的背景色 */
	-webkit-transition: background-color 2592000s ease-in-out 0s;
	transition: background-color 2592000s ease-in-out 0s;
}

::-webkit-scrollbar {
	width: 8px;
	height: 8px;
	background-color: transparent;
}

::-webkit-scrollbar-thumb {
	background-color: #cbd5e0;
	border-radius: 10px;
	cursor: pointer;
}

::-webkit-scrollbar-thumb:hover {
	background-color: #a0aec0;
}

::selection {
	background-color: var(--primary-color);
	color: #ffffff;
}

.hover-underline {
	position: relative;
	display: inline-block;
}

.hover-underline:after {
	content: '';
	position: absolute;
	width: 100%;
	height: 2px;
	bottom: -2px;
	left: 0;
	background-color: var(--primary-color);
	visibility: hidden;
	transform: scaleX(0);
	transition: transform 0.2s ease-in-out;
}

.hover-underline:hover:after {
	visibility: visible;
	transform: scaleX(1);
}

.hover-underline:hover {
	color: var(--primary-color);
}

.header {
	padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
	margin-bottom: var(--spacing-lg);
	display: flex;
	align-items: center;
	justify-content: space-between;
	border-bottom: 1px solid var(--border-color);
}

.header .logo {
	width: 48px;
	height: 48px;
	cursor: pointer;
	border-radius: 50%;
	flex-shrink: 0;
	margin-right: var(--spacing-md);
	user-select: none;
	box-shadow: var(--shadow-md);
	transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.header .logo:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-lg);
}

.header .menu {
	margin-right: -9px;
	text-align: right;
	user-select: none;
}

.header .menu a {
	display: inline-block;
	font-size: 16px;
	font-weight: 500;
	margin: var(--spacing-xs) var(--spacing-md);
	white-space: nowrap;
	user-select: auto;
	padding: var(--spacing-xs) var(--spacing-sm);
	border-radius: var(--radius-md);
	transition: var(--transition-normal);
}

.header .menu a:hover {
	background-color: var(--bg-secondary);
	color: var(--primary-color);
}

.footer {
	padding: var(--spacing-lg) 0;
	font-size: 14px;
	text-align: center;
	border-top: 1px solid var(--border-color);
	margin-top: var(--spacing-2xl);
	color: var(--text-tertiary);
}

.footer a {
	color: var(--text-tertiary);
	padding: 0 var(--spacing-xs);
	white-space: nowrap;
	transition: var(--transition-normal);
}

.footer a:hover {
	color: var(--primary-color);
	text-decoration: underline;
}

#to-top {
	position: fixed;
	z-index: 99;
	right: 20px;
	bottom: 20px;
	width: 40px;
	height: 40px;
	cursor: pointer;
	border-radius: var(--radius-lg);
	background-color: var(--primary-color);
	opacity: 0.8;
	overflow: hidden;
	transform: translateY(66px);
	transition: transform 0.2s ease-in-out, opacity 0.2s ease;
	box-shadow: var(--shadow-md);
}

#to-top.show {
	transform: translateY(0);
}

#to-top:hover {
	opacity: 1;
}

#to-top > span {
	display: block;
	width: 40%;
	height: 40%;
	position: absolute;
	left: 50%;
	top: 45%;
	transform: translate(-50%, -50%) rotate(45deg);
}

#to-top > span:first-child {
	background-color: #ffffff;
}

#to-top > span:last-child {
	background-color: var(--primary-color);
	transform: translate(-50%, 25%) rotate(45deg);
}

@media screen and (max-width: 560px) {
	.header {
		padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
		flex-direction: column;
		align-items: flex-start;
	}

	.header .menu {
		margin-right: 0;
		margin-top: var(--spacing-md);
		text-align: left;
		display: flex;
		flex-wrap: wrap;
	}

	.header .menu a {
		margin: var(--spacing-xs) var(--spacing-xs) var(--spacing-xs) 0;
		font-size: 15px;
	}
}