body{
	background-color: #F5F5F7;
}

/* 幻灯片样式 */
.slider-container {
	position: relative;
	max-width: 1920px;
	height: 650px;
	overflow: hidden;
	margin: 0 auto;
}

.slider {
	position: relative;
	width: 100%;
	height: 100%;
}

.slide {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	opacity: 0;
	transition: opacity 1s ease;
	display: flex;
	align-items: center;
	overflow: hidden;
}

.slide.active {
	opacity: 1;
}

.slide img {
	position: absolute;
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
	z-index: -1;
}

/* 垂直卡片列表：间距严格12px */
.cards-list {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 12px;
	width: 100%;
}

/* 基础卡片：宽1400px，高820px，圆角12px，不使用全局gap */
.card {
	width: 1400px;
	height: 820px;
	display: flex;
	flex-direction: row;
	background-color: #ffffff;
	border-radius: 12px;
	box-shadow: 0 25px 45px rgba(0, 0, 0, 0.08), 0 5px 15px rgba(0, 0, 0, 0.03);
	overflow: hidden;
	transition: box-shadow 0.3s ease;  /* 只保留阴影过渡，卡片本身无位移 */
}

/* 鼠标放上去块完全不动（无transform），仅阴影轻微加深 */
.card:hover {
	box-shadow: 0 30px 55px rgba(0, 0, 0, 0.12);
}

/* 图片容器：固定宽度780px，高度820px，始终不变 */
.image-area {
	width: 780px;
	height: 820px;
	flex-shrink: 0;
	background-color: #eef2fa;
	overflow: hidden;
	position: relative;
}

/* 图片完美填充，保留悬停缩放效果 */
.image-area img {
	width: 100%;
	height: 100%;
	display: block;
	object-fit: cover;
	transition: transform 0.45s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

.image-area:hover img {
	transform: scale(1.03);
}

.card:not(.card-swap) .text-area {
	width: 500px;
	margin-right: 120px;
	padding-left: 100px;
	padding-right: 0;
	background: linear-gradient(125deg, #ffffff 0%, #fafcff 100%);
	display: flex;
	flex-direction: column;
	justify-content: flex-start;
	align-items: flex-start;
	position: relative;
	background-image: radial-gradient(circle at 15% 35%, rgba(99, 102, 241, 0.02) 2%, transparent 2.2%);
	background-size: 32px 32px;
}

.card.card-swap .text-area {
	width: 520px;
	margin-left: 100px;            /* 文字区域整体左移100px，使内容左侧距离图片右侧边缘 = 100px */
	padding-left: 0;               /* 内部内容不再额外左移，确保距离图片正好100px */
	padding-right: 120px;          /* 描述文本距离卡片右侧边框120px（卡片右侧边框即文字区域右边界） */
	background: linear-gradient(125deg, #ffffff 0%, #fafcff 100%);
	display: flex;
	flex-direction: column;
	justify-content: flex-start;
	align-items: flex-start;
	position: relative;
	background-image: radial-gradient(circle at 15% 35%, rgba(99, 102, 241, 0.02) 2%, transparent 2.2%);
	background-size: 32px 32px;
}

.text-area::before {
	content: "";
	position: absolute;
	top: -15%;
	right: -5%;
	width: 280px;
	height: 280px;
	background: radial-gradient(circle, rgba(99, 102, 241, 0.05) 0%, rgba(99, 102, 241, 0) 70%);
	border-radius: 50%;
	pointer-events: none;
}

.title-group {
	margin-top: 260px;
	width: 100%;
}

.lang-en .title-group {
	margin-top: 260px;
	width: 100%;
}

.title {
	font-size: 78px;
	font-weight: 400;
	line-height: 1.2;
	letter-spacing: -0.02em;
	background: linear-gradient(135deg, #1A1D2F 0%, #2D3256 100%);
	background-clip: text;
	-webkit-background-clip: text;
	color: #1a1918;
	margin-bottom: 24px;
}

.title-decoration {
	width: 64px;
	height: 4px;
	background: linear-gradient(90deg, #6366f1, #c084fc);
	border-radius: 6px;
	margin-bottom: 28px;
}

.accent-tag {
	display: inline-block;
	font-size: 15px;
	font-weight: 500;
	color: #5b5fc7;
	background: rgba(99, 102, 241, 0.12);
	padding: 6px 18px;
	border-radius: 40px;
	letter-spacing: 0.3px;
	backdrop-filter: blur(2px);
}

.flex-spacer {
	flex: 1;
	min-height: 0;
}

.description {
	font-size: 18px;
	line-height: 32px;
	color: #595957;
	max-width: 100%;
	text-wrap: pretty;
	margin-bottom: 120px;    /* 描述底部距卡片底部精确120px */
	width: 100%;
}

.description p{
	margin-bottom: 10px;
}

.text-area {
	align-items: flex-start;
}

/* ========= 左右互换布局：通过 flex-direction: row-reverse 使图片在左 ========= */
.card.card-swap {
	flex-direction: row-reverse;
}

/* 优雅入场动画（保留视觉增强，不影响功能） */
@keyframes fadeSlideUp {
	from {
		opacity: 0;
		transform: translateY(22px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.card .title-group,
.card .description {
	animation: fadeSlideUp 0.55s cubic-bezier(0.2, 0.9, 0.4, 1.1) forwards;
}
.card .title-decoration {
	animation-delay: 0.05s;
	opacity: 0;
}
.card .accent-tag {
	animation-delay: 0.12s;
	opacity: 0;
}
.card .description {
	animation-delay: 0.22s;
	opacity: 0;
}

/* 不同卡片动画细微差别，增加生动感 */
.cards-list .card:nth-child(2) .title-group,
.cards-list .card:nth-child(2) .description {
	animation-delay: 0.02s, 0.24s;
}
.cards-list .card:nth-child(2) .title-decoration {
	animation-delay: 0.07s;
}
.cards-list .card:nth-child(2) .accent-tag {
	animation-delay: 0.14s;
}
.cards-list .card:nth-child(3) .title-group,
.cards-list .card:nth-child(3) .description {
	animation-delay: 0.04s, 0.26s;
}
.cards-list .card:nth-child(3) .title-decoration {
	animation-delay: 0.09s;
}
.cards-list .card:nth-child(3) .accent-tag {
	animation-delay: 0.16s;
}
.cards-list .card:nth-child(4) .title-group,
.cards-list .card:nth-child(4) .description {
	animation-delay: 0.06s, 0.28s;
}
.cards-list .card:nth-child(4) .title-decoration {
	animation-delay: 0.11s;
}
.cards-list .card:nth-child(4) .accent-tag {
	animation-delay: 0.18s;
}

.tail-text-area{
	width: 100%; 
	background-color: #FFF;
	margin-top: 10px;
	padding-top: 100px;
	padding-bottom: 10px;
	text-align: center;
}

.tail-text-area h1{
	display: block;
	text-align: center;
	font-size: 78px;
	font-weight: 400;
	color: #1a1918;
}

.tail-text-area p{
	width: 1020px;
	font-size: 18px;
	display: block;
	margin-left: auto; 
	margin-right: auto; 
	margin-bottom: 10px;
	line-height: 32px;
	color: #595957;
}

.tail-img {
	max-width: 100%;
	padding-top: 100px;
	padding-bottom: 100px;
	background-color: #FFF;
}

.tail-img img {
    display: block;
    margin: 0 auto 0 auto;
    max-width: 1400px;
}

/* 响应式：窄屏横向滚动，保持卡片完整 */
@media (max-width: 1450px) {
	body {
		padding: 30px 20px;
		align-items: flex-start;
		overflow-x: auto;
	}
	.cards-list {
		min-width: 1400px;
		align-items: center;
	}
}

/* 极小高度滚动兼容 */
@media (max-height: 860px) {
	body {
		justify-content: flex-start;
		padding-top: 30px;
		padding-bottom: 40px;
	}
}