:root {
	--core-width: 1024px;
	--primary-color: #0088ff;
	--orange-color: #fe5b3e;
	--light-red-color: #f6eeef;
	--lightBG-color: #00000006;
	--button-shadow: #006bd650;
}

.v_spacer8 {
	height: 8px;
}
.v_spacer16 {
	height: 1.6rem;
}
.v_spacer32 {
	height: 3.2rem;
}
.v_spacer64 {
	height: 6.4rem;
}
.v_spacer128 {
	height: 12.8rem;
}
.orange-text {
	color: var(--orange-color);
	font-family: "TencentSans", Helvetica, Arial, sans-serif;
}
.even-flex {
	flex: 1;
	width: inherit;
}
.illu-app {
	width: 15rem;
}
.app {
	position: relative;
	text-align: center;
}
.app-bg {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 24rem;
	height: 24rem;
	background: linear-gradient(to right, #ffc7ff24, #aeffff3c);
	border-radius: 50%;
	z-index: -1;
}
.form {
	display: flex;
	gap: 2rem;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}
.row {
	display: flex;
	gap: 32px;
}
.column-title {
	width: 144px;
	font-weight: 500;
	color: #1e1e1e;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}
.column-content {
	flex: 1;
	color: #5e5e5e;
}
.contact-icon {
	width: 18px;
}
.footer-core {
	width: var(--core-width);
	margin: 0 auto;
	color: #ffffff99;
}
.footer-content {
	display: flex;
	justify-content: space-between;
	margin-top: 16px;
}
.illu-hero {
	width: 35rem;
}
* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
	scroll-behavior: smooth;
	font-family: Helvetica, Arial;
}
body {
	color: #1e1e1e;
}

@font-face {
	font-family: "TencentSans"; /* 定义字体名称 */
	src: url("TencentSans.ttf") format("truetype"); /* 指定字体文件路径 */
	font-weight: normal; /* 可选：设置字重 */
	font-style: normal; /* 可选：设置字体样式 */
}

.navi_bar {
	width: 100%;
	height: 56px;
	display: flex;
	align-items: center;
	position: fixed;
	transition: background-color 0.3s, box-shadow 0.3s;
	z-index: 200;
	background-color: transparent; /* 初始背景透明 */
	box-shadow: none;
}
.navi_bar.scrolled {
	box-shadow: 0 8px 16px #00000008;
	background-color: rgba(255, 255, 255, 0.8); /* 半透明白色背景 */
	backdrop-filter: blur(10px); /* 模糊效果 */
	-webkit-backdrop-filter: blur(10px); /* Safari 兼容 */
}
.navi_core {
	width: var(--core-width);
	height: 48px;
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
}
#nav-mobile-menu {
	display: none;
	width: 100%;
	height: 100%;
	position: absolute;
	top: 0;
	left: 0;
	background-color: white;
	z-index: 300;
	overflow-y: hidden;
}
#nav-mobile-menu ul {
	padding: 32px;
	margin: 0;
	font-size: 24px;
}

.primary-btn {
	color: white;
	background: var(--primary-color);
	border-radius: 32px;
	padding: 10px 20px;
	font-size: 1.0625rem;

	line-height: 22px;
	box-shadow: 0 8px 20px var(--button-shadow);
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: flex-start;
	gap: 0.6rem;
	overflow: hidden;
	position: relative;
	text-align: center;
	transition: box-shadow 1s ease;
	width: -moz-fit-content;
	width: fit-content;
	z-index: 1;
}
.primary-btn-icon {
	width: 1.5rem;
}
.flat-btn {
	height: 42px;
	color: var(--primary-color);
	padding: 10px 20px;
	font-size: 1.0625rem;
	line-height: 22px;
	border-radius: 32px;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: flex-start;
	gap: 0.6rem;
	transition: border-color 1s ease;
	box-sizing: border-box;
	border: 2px solid transparent;
}
.flat-btn:hover {
	border-color: var(--primary-color); /* 悬停时显示边框 */
}
.small-primary-btn {
	height: 3rem;
	box-shadow: none;
	font-size: 1.4rem;
}
.primary-btn:after {
	background: right -100px top 130px,
		linear-gradient(180deg, #473e7c 0, transparent 70%),
		radial-gradient(ellipse at top, #473e7c 60%, transparent 100%),
		radial-gradient(at right, #473e7c 0, transparent 90%),
		linear-gradient(90deg, #006bd6 50%, #f05aa0 0);
	content: "";
	height: 100%;
	left: 0;
	opacity: 0;
	position: absolute;
	top: 0;
	transition: opacity 0.5s ease;
	width: 100%;
	z-index: -1;
}

.primary-btn:hover::after {
	opacity: 1;
}
.primary-btn:hover {
	box-shadow: 0 3px 6px var(--button-shadow);
}
.page-bg {
	width: 100%;
	position: absolute;
	top: 0;
	z-index: -1;
}
.hero-title {
	font-size: 3.25rem;

	font-family: "TencentSans", Helvetica, Arial, sans-serif;
}
.section-title {
	font-size: 32px;
	margin-bottom: 32px;
	font-family: "TencentSans", Helvetica, Arial, sans-serif;
}
.title {
	font-size: 1rem;
	color: #333333;
	font-weight: 600;
	margin: 12px 0 6px;
}
.paragraph {
	font-size: 0.9375rem;
	line-height: 22px;
	color: #5e5e5e;
	font-weight: 300;
}

header {
	background-color: #333;
	color: #fff;
	padding: 1rem;
	position: sticky;
	top: 0;
	z-index: 1000;
}

nav {
	width: 100%;
	display: flex;
	justify-content: space-between;
	align-items: center;
	margin: 0 auto;
	flex-wrap: wrap;
}

.illu {
	width: 320px;
}

.logo {
	height: 40px;
}

.nav-left {
	display: flex;
	align-items: center;
	flex: 1;
	justify-content: space-between;
}

.nav-links {
	display: flex;
	gap: 1.5rem;
	flex-wrap: wrap;
}

a {
	text-decoration: none; /* 去掉下划线 */
	color: inherit; /* 继承父元素的颜色 */
	font-size: 16px;
}
a:hover {
	opacity: 0.75;
}

nav a:hover {
	text-decoration: underline;
}

.lang-toggle {
	cursor: pointer;
	background: #1e1e1e;
	border: none;
	color: white;
	padding: 8px 16px;
	border-radius: 32px;
	margin-left: 32px;
	font-size: 16px;
}
.lang-toggle:hover {
	background: #2e2e2e;
}
section {
	padding: 6.25rem 1.25rem;
	/* min-height: 100vh; */
	display: flex;
	justify-content: center;
}

/* section:nth-child(even) {
	background-color: #f0f0f0;
} */

.contact-wrap {
	display: flex;
	flex-direction: column;
	gap: 8px;
}
.contact-item {
	display: flex;
	align-items: center;
	gap: 12px;
}
.app-item {
	display: flex;
	align-items: start;
	gap: 12px;
}
.contact-info {
	font-size: 0.875rem;
	font-weight: 300;
}
.app-title {
	font-size: 1.25rem;
	line-height: 28px;
	font-weight: 500;
	margin-bottom: 8px;
}

.section-core {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 6rem;
	width: var(--core-width);
}
.hero-section {
	margin-top: 4rem;
	align-items: start;
	gap: unset;
}
.feature-wrap {
	display: grid;
	grid-template-columns: repeat(2, 1fr); /* 3列 */
	grid-template-rows: repeat(3, auto); /* 2行 */
	gap: 16px;
}
.feature-item {
	background-color: var(--lightBG-color);
	text-align: center;
	padding: 16px 32px;
	border-radius: 12px;
}
.feature-icon {
	width: 48px;
}
footer {
	background-color: #1e1e1e;
	position: relative;
	text-align: center;
	padding: 2rem 1rem 1.6rem;
	overflow: hidden;
}

footer .logo {
	height: 40px;
}
.website-info {
	font-size: 14px;
	margin-top: 16px;
}
.logo-watermark {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 24rem;
}

.button-group {
	display: flex;
	gap: 16px;
}

.animate {
	opacity: 0; /* 初始不可见 */
	transition: opacity 1s ease, transform 1s ease;
}

/* 淡入效果 */
.fade-in {
	transform: translateY(0); /* 不改变位置 */
}

.fade-in.show {
	opacity: 1; /* 淡入 */
}

/* 上滑效果 */
.slide-up {
	transform: translateY(30px); /* 初始向下偏移 */
}

.slide-up.show {
	opacity: 1;
	transform: translateY(0); /* 上滑到原位 */
}

/* 左滑效果 */
.slide-left {
	transform: translateX(-50px); /* 初始向左偏移 */
}

.slide-left.show {
	opacity: 1;
	transform: translateX(0); /* 左滑到原位 */
}

/* 右滑效果 */
.slide-right {
	transform: translateX(50px); /* 初始向左偏移 */
}

.slide-right.show {
	opacity: 1;
	transform: translateX(0); /* 左滑到原位 */
}

/* 缩放效果 */
.zoom-in {
	transform: scale(0.8); /* 初始缩小 */
}

.zoom-in.show {
	opacity: 1;
	transform: scale(1); /* 放大到正常大小 */
}

/* 旋转效果 */
.rotate-left {
	transform: rotate(-45deg); /* 初始缩小 */
}

.rotate-left.show {
	opacity: 1;
	transform: rotate(0deg); /* 放大到正常大小 */
}

.rotate-right {
	transform: rotate(45deg) scale(0.2); /* 初始缩小 */
}

.rotate-right.show {
	opacity: 1;
	transform: rotate(0deg) scale(1); /* 放大到正常大小 */
}

/* 旋转放大效果 */
.rotate-zoom {
	transform: rotate(-45deg) scale(0.2);
}

.rotate-zoom.show {
	opacity: 1;
	transform: rotate(0deg) scale(1);
}

.delay01 {
	transition-delay: 0.3s;
}
.delay02 {
	transition-delay: 0.6s;
}
.delay03 {
	transition-delay: 0.9s;
}
.delay04 {
	transition-delay: 1.2s;
}
.delay05 {
	transition-delay: 1.5s;
}
.delay06 {
	transition-delay: 1.8s;
}
.delay07 {
	transition-delay: 2.1s;
}
.delay08 {
	transition-delay: 2.4s;
}
.delay09 {
	transition-delay: 2.7s;
}

.animated-container {
	opacity: 0; /* 初始不可见 */
	transition: opacity 1s ease-in-out;
}

.animated-container.visible {
	opacity: 1; /* 当容器可见时整体显示 */
}

.animated-container > * {
	/* 选择所有子元素 */
	opacity: 0;
	transform: translateY(20px);
	transition: opacity 1s ease, transform 1s ease;
}

.animated-container > .visible {
	opacity: 1;
	transform: translateY(0);
}

[data-lang] {
	display: none;
}

[data-lang="zh"][data-active="true"],
[data-lang="en"][data-active="true"] {
	display: block;
}

/* Prevent scrolling when overlay is active */
body.no-scroll {
	overflow: hidden;
}

/* Overlay styling */
.overlay {
	display: none;
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, 0.8); /* Semi-transparent black */
	z-index: 1000;
	justify-content: center;
	align-items: center;
}

/* Video container styling */
.video-container {
	position: relative;
	max-width: 800px;

	background: #fff;
}

/* Video styling */
video {
	width: 100%;
	height: auto;
}

/* Close button styling */
.close-btn {
	position: absolute;
	top: -32px;
	right: -30px;
	background-color: #fff;
	border: none;
	font-size: 48px;
	font-weight: 300;
	cursor: pointer;
	width: 56px;
	height: 56px;
	line-height: 56px;
	text-align: center;
	border-radius: 50%;
	transition: background-color 1s ease, color 1s ease;
}
.close-btn:hover {
	background-color: var(--primary-color);
	color: white;
}
/* 以下为响应式的媒体查询 */
@media screen and (max-width: 1272px) {
	:root {
		--core-width: 1024px;
	}
}

@media screen and (max-width: 1024px) {
	:root {
		--core-width: 736px;
	}
	html {
		font-size: 95%; /* 1rem = 9px */
	}
	.button-group {
		flex-direction: column;
	}
}

@media screen and (max-width: 768px) {
	:root {
		--core-width: calc(100vw - 96px);
	}
	html {
		font-size: 90%; /* 1rem = 9px */
	}
	.section-core {
		flex-direction: column;
		gap: 4rem;
	}
	.reverse-flex {
		flex-direction: column-reverse;
	}
	.nav-links,
	.footer-content {
		display: none;
	}

	.website-info {
		text-align: left;
	}
	.form {
		width: 100%;
	}
	.button-group {
		flex-direction: row;
	}
}

@media screen and (max-width: 480px) {
	:root {
		--core-width: calc(100vw - 64px);
	}
	html {
		font-size: 85%; /* 1rem = 9px */
	}
	.button-group {
		flex-direction: row;
		gap: 4px;
	}
	.primary-btn {
		box-shadow: none;
	}
	.illu-hero {
		width: 100%;
	}
	.form {
		font-size: 12px;
	}
	.feature-item {
		padding: 8px;
	}
	.row {
		gap: 8px;
	}
	.hero-title {
		font-size: 2.6rem;
	}
}