@charset "utf-8";
/* CSS Document */

.product-main {
	background: #000000;
	height: 90vh;
}
.product-wrap {
	width: 100%;
	position: relative;
	background: url(../images/product/wj.jpg) center no-repeat;
	background-size: cover;
	min-height: 100%;
	margin: 0px auto;
	overflow: hidden;
}

/* ===== 入场动画 ===== */
@keyframes slideInLeft {
	from {
		transform: translateX(-80px);
		opacity: 0;
	}
	to {
		transform: translateX(0);
		opacity: 1;
	}
}
@keyframes fadeDown {
	from {
		transform: translateY(-60px);
		opacity: 0;
	}
	to {
		transform: translateY(0);
		opacity: 1;
	}
}
@keyframes slideInRight {
	from {
		transform: translateX(80px);
		opacity: 0;
	}
	to {
		transform: translateX(0);
		opacity: 1;
	}
}
@keyframes fadeUp {
	from {
		transform: translateY(60px);
		opacity: 0;
	}
	to {
		transform: translateY(0);
		opacity: 1;
	}
}

.first-menu-wrap,
.second-menu-wrap {
	opacity: 0;
	transform: translateX(-80px);
}
.product-img-box {
	opacity: 0;
	transform: translateY(60px);
}
.product-wrap.show-animate .first-menu-wrap,
.product-wrap.show-animate .second-menu-wrap {
	animation: slideInLeft 0.8s ease-out forwards;
}
.product-wrap.show-animate .first-menu-wrap {
	animation-delay: 0.1s;
}
.product-wrap.show-animate .second-menu-wrap {
	animation-delay: 0.3s;
}
.product-wrap.show-animate .product-img-box {
	animation: fadeUp 0.8s ease-out 0.7s forwards;
}

.text-title {
	text-align: center;
	margin-top: 200px;
	position: relative;
	z-index: 20;
	opacity: 0;
	transition: none;
}

/* ===== 一级菜单（PC 垂直三组） ===== */
.first-menu-wrap {
	position: absolute;
	left: 0;
	top: 0;
	height: 100%;
	z-index: 10;
	transition: all 0.3s ease;
}
.tab-first-wrap {
	width: 231px;
	padding: 40px 20px;
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	background: rgb(0 0 0 / 80%);
	text-align: center;

	height: 100%;
	max-height: 100%;
	overflow-y: auto;

	overflow-x: hidden;
}

.menu-group {
	display: flex;
	flex-direction: column;
	gap: clamp(10px, 2vh, 18px);
	flex-shrink: 0;
}

.tab-first-divider {
	flex-shrink: 0;
	width: 70%;
	height: 1px;
	background: rgba(255, 255, 255, 0.15);
	margin: 6px auto;
	list-style: none;
	pointer-events: none;
}

.tab-first-item {
	font-family: 'MiSans';
	font-size: 20px;
	letter-spacing: 3px;
	color: #999;
	cursor: pointer;
	transition: all 0.3s;
	line-height: 43px;
	flex-shrink: 0;
}
.tab-first-item.active {
	color: #fff;
	font-weight: 600;
	transform: translateX(4px);
}

/* ===== 二级菜单 ===== */
.second-menu-wrap {
	position: absolute;
	left: 231px;
	top: 0;
	height: 100%;
	z-index: 10;
	transition: all 0.3s ease;
}
.tab-second-wrap {
	width: 264px;
	padding: 40px 25px;
	background: rgba(0, 0, 0, 0.35);
	display: flex;
	flex-direction: column;
	gap: 22px;
	text-align: center;
	height: 100%;
	overflow-y: auto;
	overflow-x: hidden;
}
.tab-second-item {
	font-family: 'MiSansLight';
	font-size: 28px;
	letter-spacing: 4px;
	color: #888;
	cursor: pointer;
	transition: 0.3s;
	line-height: 55px;
}
.tab-second-item.active {
	color: #ffffff;
}

/* ===== 主内容 ===== */
.main-content {
	left: 0;
	top: 0;
	width: 100%;
	height: 40vh;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	z-index: 1;
	padding: 20px;
	position: relative;
	transition: justify-content 0.3s ease;
}
.main-content.align-right-content {
	justify-content: flex-end;
	height: 60vh;
	align-items: end;
}
.main-content.align-right-content .text-title {
	margin-right: 6%;
	text-align: center;
	width: auto;
}

.big-tit {
	display: inline-flex;
	align-items: center;
	gap: 0px;
	font-size: 75px;
	letter-spacing: 12px;
	margin-bottom: 12px;
}
.big-tit span {
	font-family: "SimSun", "宋体", serif;
	background: -webkit-linear-gradient(#ffffff, #ffffff, #bbc2cf, #4e4c4e, #4e4e4e);
	background: -o-linear-gradient(#ffffff, #ffffff, #bbc2cf, #4e4c4e, #4e4e4e);
	background: linear-gradient(#ffffff, #ffffff, #bbc2cf, #4e4c4e, #4e4e4e);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
	font-weight: 400;
}
.tit-icon {
	width: 72px;
	height: auto;
	display: block;
	margin: 0 30px;
}
.sub-en {
	font-size: 13px;
	color: #eeeeee;
	letter-spacing: 6px;
	font-family: 'MiSansLight';
}
.sub-cn {
	font-size: 20px;
	margin: 12px 0 32px;
	font-family: "Source Han Serif SC", "SimSun-ExtB", "SimSun","宋体", serif;
	font-weight: 700;
	background: -webkit-linear-gradient(#ffffff, #ffffff, #8a8a8a, #4e4e4e);
	background: -o-linear-gradient(#ffffff, #ffffff, #8a8a8a, #4e4e4e);
	background: linear-gradient(#ffffff, #ffffff, #8a8a8a, #4e4e4e);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
	letter-spacing: 7px;
}
.btn-more {
	display: inline-block;
	padding: 5px 16px;
	background: -webkit-linear-gradient(left, #0000a1, #040050);
	background: -o-linear-gradient(left, #0000a1, #040050);
	background: linear-gradient(to right, #0000a1, #040050);
	color: #fff;
	border-radius: 4px;
	font-size: 14px;
	letter-spacing: 3px;
	cursor: pointer;
	text-decoration: none;
	position: relative;
	z-index: 20;
	transition: opacity 0.3s;
}
.btn-more:hover {
	opacity: 0.8;
}

.product-img-box {
	width: 30%;
	position: absolute;
	margin-top: 10px;
	z-index: 5;
	bottom: 20px;
	transition: all 0.3s ease;
}
.product-img-box img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	display: none;
	transition: opacity 0.5s ease;
}
.product-img-box img.show {
	display: block;
}

/* ================================================================
		   移动端 (≤992px) 横向滚动
		   ================================================================ */
@media (max-width: 992px) {
	.product-wrap {
		height: auto;
		min-height: calc(100vh - 60px);
		margin-top: 0px;
	}

	.first-menu-wrap {
		width: 100%;
		position: relative;
		height: auto;
	}
	.tab-first-wrap {
		width: 100%;
		height: 74px;
		flex-direction: row !important;
		flex-wrap: nowrap !important;
		justify-content: flex-start !important;
		overflow-x: auto;
		overflow-y: hidden;
		padding: 20px 10px;
		gap: 12px;
		background: #000000d1;
		position: relative;
		align-items: center;
	}
	.menu-group {
		flex-direction: row !important;
		gap: 12px;
		flex-shrink: 0;
		align-items: center;
	}

	.tab-first-divider {
		width: 1px;
		height: 28px;
		margin: 0 4px;
		background: rgba(255, 255, 255, 0.2);
		flex-shrink: 0;
	}
	.tab-first-item {
		font-size: 14px;
		line-height: 36px;
		padding: 0 12px;
		white-space: nowrap;
		flex-shrink: 0;
		transform: none !important;
	}
	.tab-first-item.separate {
		margin-top: 0 !important;
		padding-top: 0 !important;
	}

	.second-menu-wrap {
		width: 100%;
		position: relative;
		left: 0;
		height: auto;
		top: 20px;
	}
	.tab-second-wrap {
		width: 100%;
		height: auto;
		flex-direction: row;
		flex-wrap: wrap;
		padding: 12px 10px;
		gap: 15px;
		justify-content: center;
		background: #00000063;
		position: relative;
		overflow: visible;
	}
	.tab-second-item {
		font-size: 16px;
		line-height: 38px;
		padding: 0 12px;
		white-space: nowrap;
		flex-shrink: 0;
	}

	.main-content {
		padding-top: 0;
		min-height: auto;
		height: auto;
		padding-bottom: 30px;
	}
	.main-content.align-right-content .text-title {
		margin-right: 0%;
	}

	.big-tit {
		font-size: 36px;
		letter-spacing: 6px;
		gap: 12px;
	}
	.tit-icon {
		width: 36px;
	}
	.sub-en {
		font-size: 10px;
	}
	.sub-cn {
		font-size: 18px;
	}
	.product-img-box {
		width: 40%;
		height: 55%;
		position: relative;
		margin: 20px auto 0;
		z-index: 5;
	}
	.text-title {
		margin-top: 60px;
	}
}

@media (max-width: 787px) {
	.product-img-box {
		width: 50%;
		height: 55%;
	}
}

@media (max-width: 576px) {
	.big-tit {
		font-size: 28px;
		letter-spacing: 3px;
		gap: 8px;
	}
	.tit-icon {
		width: 26px;
	}
	.tab-first-divider {
		height: 22px;
		margin: 0 3px;
	}
	.tab-first-item {
		font-size: 14px;
		line-height: 56px;
		height: 56px;
	}
	.second-menu-wrap {
		top: 0px;
	}
	.tab-second-item {
		font-size: 18px;
	}
	.tab-first-wrap {
		padding: 8px 6px;
		height: 64px;
	}
	.tab-second-wrap {
		padding: 8px 6px;
		top: 0px;
	}
	.main-content {
		padding-top: 0;
	}
	.product-img-box {
		width: 60%;
		height: 55%;
	}
	.menu-group {
		gap: 8px;
	}
}