/* 全局样式 */
 * {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
	user-select: none;
}

/* 思源黑体 */
 @font-face {
	font-family: Noto Sans;
	font-weight: 500;
	font-display: swap;
 }

body {
	font-family: 'PingFang SC', 'Noto Sans SC', sans-serif, iconfont;
	line-height: 1.6;
	color: #333;
	background: #ccc url(../images/background.jpg) top center no-repeat;
	background-size: cover;
	background-attachment: fixed;
	font-size: calc(14px + 0.2vw);
	overflow-x: hidden;
}

/* Header - PC端和移动端均显示 */
.header{
	display: flex;
	justify-content: center;
	align-items: center;
	height: 60px;
	background: #f3f3f3;
	border-bottom: 1px solid #f8f8f8;
	box-shadow: 2px 0 10px rgba(0, 0, 0, .2);
	position: relative;
	z-index: 1000;
}
.header .logo{
	width: 145px;
	position: relative;
	top: 3px;
}

.container {
	max-width: 800px;
	margin: 0 auto;
	background-color: #fff;
	padding-bottom: 100px;
}

/* 双语提示与语言切换区域 */
.lang-section {
	padding: 18px 24px 14px;
	text-align: center;
	background: linear-gradient(180deg, #f0faf3 0%, #e0f5ea 100%);
	border-bottom: 1px solid #b8e6ce;
	position: relative;
}

.lang-hint {
	font-size: 13px;
	line-height: 1.75;
	color: #3d8b59;
	margin-bottom: 12px;
	padding: 0 10px;
}

.lang-hint-title {
	display: block;
	font-size: 15px;
	color: #2a7a47;
	margin-bottom: 6px;
	letter-spacing: 0.3px;
}

.lang-hint p {
	margin: 0;
}

.lang-buttons {
	display: flex;
	justify-content: center;
	gap: 12px;
	flex-wrap: wrap;
}

.lang-btn {
	display: inline-block;
	padding: 8px 28px;
	border-radius: 20px;
	font-size: 14px;
	font-weight: 500;
	text-decoration: none;
	cursor: pointer;
	transition: all 0.3s ease;
	text-align: center;
	min-width: 90px;
}

.lang-btn-active {
	background: #00CC88;
	color: #fff;
	border: 2px solid #00CC88;
}

.lang-btn-active:hover {
	background: #05773f;
	border-color: #05773f;
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgba(0, 204, 136, 0.35);
}

.lang-btn-disabled {
	background: #fff;
	color: #adb5bd;
	border: 2px solid #dee2e6;
	cursor: not-allowed;
	pointer-events: none;
}

/* 电子说明书基础信息 */
.handbook-info {
	padding: 18px 24px 14px;
	background: #fafcfb;
	border-bottom: 1px solid #e8f0ec;
}

.info-title {
	font-size: 15px;
	font-weight: 600;
	color: #2a7a47;
	margin-bottom: 12px;
	padding-bottom: 8px;
	border-bottom: 2px solid #c8e6d8;
	letter-spacing: 0.3px;
}

.info-list {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 6px 16px;
	font-size: 13px;
	line-height: 1.7;
}

.info-list dt {
	color: #3d8b59;
	font-weight: 600;
	white-space: nowrap;
}

.info-list dd {
	color: #495057;
	margin: 0;
}
.product-container {
	display: block;
	margin-bottom: 30px;
	position: relative;
	width: 100%;
	margin-bottom: 20px;
	padding: 12px;
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
	min-height: 60vh;
	padding-bottom: 100px;
}


/* 响应式图片区域 */

.product-container .product-img-box {
	margin: 0;
	padding: 0px 0px;
	display: block;
	font-size: 0px;
	text-align: center;
	width: 100%;
	overflow: hidden;
	position: relative;
}

.product-container .product-img-box img {
	max-width: 100%;
	height: auto;
	display: block;
	vertical-align: top;
	box-sizing: border-box;
	margin: 0 auto;
}


.product-container .hint {
	font-size: 14px;
	background: #00CC88;
	display: block;
	margin: 0 auto;
	text-align: center;
	padding: 10px 25px;
	width: max-content;
	border-radius: 20vw;
	color: #fff;
	margin-bottom: 80px;
}

/* 底部版权显示区域 */
.foot-copyright {
	margin: 5px;
	font-size: 14px;
	text-align: center;
	color: #767676;
}

.foot-copyright a {
	display: inline-block;
	color: #767676;
	text-align: none;
	text-decoration: none;
}

.foot-copyright a:hover {
	text-decoration: underline;
}

/* PC端二维码区域 */
.qr-box {
	position: fixed;
	left: calc(50% + 420px);
	/* 固定在container右侧 (800/2 + 20px gap) */
	top: 0px;
	width: 200px;
	height: auto;
	background: #fff;
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
	border-radius: 0px 0px 10px 10px;

}

.qr-box .qr-code {
	width: 90%;
	margin: 0 auto;
	height: auto;
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	align-items: center;
	margin-top: 20px;
	margin-bottom: 10px;
	border-bottom: 1px solid #f3f3f3;

}

.qr-box .qr-code img {
	width: 130px;
	height: 130px;
}

.qr-box .qr-code p {
	font-size: 16px;
	padding: 10px 5px;
	padding-top: 4px;
}

.qr-box .website-link {
	display: flex;
	justify-content: center;
	align-items: center;
	padding-top: 10px;
	padding-bottom: 25px;
}

.qr-box .website-link a {
	background: #00CC88;
	color: #fff;
	font-size: 14px;
	padding: 5px 15px;
	border-radius: 8px;
	padding-right: 12px;
	text-decoration: none;
	transition: all 0.4s;
	display: flex;
	justify-content: center;
	align-items: center;
}

.qr-box .website-link a:hover {
	background: #05773f;
}

.qr-box .website-link a i {
	font-size: 16px;
	position: relative;
	top: 0.5px;
	padding-left: 5px;
}

/* 底部按钮区域 */
.buy-buttons {
	position: fixed;
	height: 70px;
	bottom: 0;
	left: 0;
	right: 0;
	background-color: #f3f3f3;
	box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
	z-index: 400;
	padding: 0px 0px;
	overflow: hidden;
	box-sizing: border-box;
	padding-top: 5px;
}

.buy-buttons-container {
	display: flex;
	align-items: center;
	justify-content: center;
	background: none;
	gap: 0;
	width: 100%;
}

.buy-button {
	height: 45px;
	padding: 0 28px;
	border-radius: 25px;
	color: #fff;
	text-align: center;
	font-weight: 600;
	font-size: 15px;
	cursor: pointer;
	transition: all 0.3s;
	text-decoration: none;
	display: inline-flex;
	justify-content: center;
	align-items: center;
	gap: 8px;
	white-space: nowrap;
	margin: 8px auto;
}

.buy-button .download-icon {
	flex-shrink: 0;
}

.buy-button i, .buy-button svg {
	margin-right: 0;
}

.buy-button:hover {
	transform: translateY(-2px);
	box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

.tmall {
	background: #00CC88;
}

.jd {
	background: #00CC88;
}

.mobile-spacer {
	height: 80px;
	display: block;
}

@media (min-width: 768px) {
	.mobile-spacer {
		display: none;
	}
}

/* 返回顶部按钮 */
.back-to-top {
	position: fixed;
	bottom: 100px;
	left: calc(50% + 440px);
	/* 固定在container右侧 */
	width: 48px;
	height: 48px;
	border-radius: 50%;
	background-color: #767676;
	color: white;
	display: flex;
	justify-content: center;
	align-items: center;
	box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
	opacity: 0;
	visibility: hidden;
	transition: all 0.3s;
	cursor: pointer;
	z-index: 50;
	border: none;

}

.back-to-top i {
	font-size: 20px;
}

.back-to-top.visible {
	opacity: 1;
	visibility: visible;
}



/* 响应式设计 */

/* 手机端样式优化 */
@media (max-width: 1000px) {

	body {
		background: #fff;
	}

	.container {
		max-width: 100vw;
		padding: 0px;
		box-shadow: none;
	}

	.container .product-container {
		padding: 0px;
		padding-bottom: 0vw;
		padding-top: 0px;
	}

	.qr-box {
		display: none;
	}

	/* 底部 天猫京东按钮*/
	.button-container {
		bottom: 0;
		left: 0;
		width: 100%;
		transform: translateX(0);
	}

	/* 底部按钮区域 */
	.buy-buttons {
		position: fixed;
		height: 65px;
		bottom: 0;
		left: 0;
		right: 0;
		background-color: #f3f3f3;
		box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
		z-index: 400;
		padding: 0px 0px;
		overflow: hidden;
		box-sizing: border-box;
		padding-top: 5px;
	}

	.buy-buttons-container {
		display: flex;
		align-items: center;
		justify-content: center;
		background: #f3f3f3;
	}

	.buy-button {
		height: 40px;
		padding: 0 24px;
		border-radius: 20px;
		color: white;
		text-align: center;
		font-weight: 600;
		font-size: 14px;
		cursor: pointer;
		transition: all 0.3s;
		text-decoration: none;
		display: inline-flex;
		justify-content: center;
		align-items: center;
		gap: 6px;
		white-space: nowrap;
	}

	.buy-button i, .buy-button svg {
		font-size: 16px;
		margin-right: 0;
	}

	.buy-button:hover {
		transform: translateY(-2px);
		box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
	}

	.tmall {
		background: #00CC88;
	}

	.jd {
		background: #00CC88;
	}

	.mobile-spacer {
		height: 80px;
		display: block;
	}


	/* 返回顶部按钮 */
	.back-to-top {
		position: fixed;
		bottom: 80px;
		right: 12px;
		/* 固定在container右侧 */
		width: 40px;
		height: 40px;
		border-radius: 50%;
		background-color: #767676;
		color: white;
		display: flex;
		justify-content: center;
		align-items: center;
		box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
		opacity: 0;
		visibility: hidden;
		transition: all 0.3s;
		cursor: pointer;
		z-index: 500;
		border: none;

	}

	.back-to-top i {
		font-size: 16px;
	}

	.back-to-top.visible {
		opacity: 1;
		visibility: visible;
	}

	/* 移动端 Header 固定顶栏 */
	.header{
		position: fixed;
		top: 0px;
		left: 0px;
		right: 0px;
		width: 100%;
	}

	/* 移动端语言切换区紧凑显示 */
	.lang-section {
		padding: 12px 14px 10px;
		margin-top: 60px; /* 为固定header留空间 */
	}

	.lang-hint-title {
		font-size: 14px;
	}

	.lang-hint {
		font-size: 12px;
		margin-bottom: 10px;
		padding: 0 4px;
	}

	/* 移动端基础信息紧凑显示 */
	.handbook-info {
		padding: 14px 16px 12px;
	}

	.info-title {
		font-size: 14px;
		margin-bottom: 10px;
	}

	.info-list {
		font-size: 12px;
		gap: 5px 12px;
	}

	.lang-btn {
		padding: 6px 22px;
		font-size: 13px;
		min-width: 80px;
	}

}