@charset "utf-8";
/* ==========================================================================
   发展历程 dev.html 专属样式 —— 水平时间轴
   配色：深胡桃 #5C4030 / 古铜金 #A98A52 / 暖米白 #F7F4EF / 暖黑 #2B2620
   ========================================================================== */
/* 顶部 banner 背景图（独立模板不加载 other.css，此处补齐） */
.nbanner {
	height: 293px;
	text-align: center;
	position: relative;
	overflow: hidden;
	background: url('../images/nbanner.jpg') center center no-repeat;
	background-size: cover;
}
.nbanner span {
	color: #fff;
	display: block;
}
.nbanner span.size1 {
	font-size: 2.6rem;
	font-weight: bold;
}
.nbanner span.size2 {
	font-size: 3.8rem;
	text-transform: uppercase;
	line-height: 1;
	font-family: -webkit-pictograph;
}
.dev-wrap {
	padding: 50px 4% 70px;
	background: #fff;
}
/* 标题区 */
.dev-head {
	margin-bottom: 44px;
}
.dev-head .dev-en {
	display: block;
	font-size: 15px;
	letter-spacing: 3px;
	color: #B5A998;
	font-weight: 400;
	margin-bottom: 8px;
}
.dev-head .dev-cn {
	font-size: 30px;
	font-weight: 700;
	color: #2B2620;
	margin: 0;
	position: relative;
	padding-bottom: 14px;
}
.dev-head .dev-cn:after {
	content: '';
	position: absolute;
	left: 0;
	bottom: 0;
	width: 54px;
	height: 3px;
	background: #A98A52;
}
/* 时间轴主轴 */
.dev-axis {
	display: flex;
	align-items: center;
	margin-bottom: 10px;
}
.dev-arrow {
	flex-shrink: 0;
	width: 46px;
	height: 46px;
	border-radius: 50%;
	background: #5C4030;
	border: 0;
	cursor: pointer;
	position: relative;
	padding: 0;
	transition: background .3s ease;
}
.dev-arrow:hover {
	background: #A98A52;
}
.dev-arrow.is-disabled {
	background: #D8D0C4;
	cursor: not-allowed;
}
.dev-arrow i {
	position: absolute;
	top: 50%;
	width: 10px;
	height: 10px;
	border-style: solid;
	border-color: #fff;
}
.dev-arrow-prev i {
	left: 52%;
	border-width: 0 0 2px 2px;
	transform: translateY(-50%) rotate(45deg);
}
.dev-arrow-next i {
	left: 42%;
	border-width: 2px 2px 0 0;
	transform: translateY(-50%) rotate(45deg);
}
/* 年份条 */
.dev-years {
	flex: 1;
	display: flex;
	align-items: stretch;
	background: #F7F4EF;
	margin: 0 18px;
	position: relative;
	min-width: 0;
}
.dev-year {
	flex: 1 1 0;
	min-width: 0;
	text-align: center;
	padding: 20px 4px;
	font-size: 18px;
	letter-spacing: 1px;
	color: #A99F92;
	cursor: pointer;
	position: relative;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	transition: color .3s ease;
	background: transparent;
	border: 0;
	border-right: 1px solid #ECE5DA;
	font-family: inherit;
}
.dev-year:last-child {
	border-right: 0;
}
.dev-year:hover {
	color: #5C4030;
}
.dev-year.is-active {
	color: #5C4030;
	font-weight: 700;
}
.dev-year.is-active:after {
	content: '';
	position: absolute;
	left: 50%;
	bottom: 0;
	transform: translateX(-50%);
	width: 60%;
	height: 3px;
	background: #5C4030;
}
/* 内容面板：左右与年份条对齐（箭头46px + 间距18px = 64px） */
.dev-panels {
	padding: 40px 64px 0;
}
.dev-panel {
	display: none;
	align-items: flex-start;
	gap: 56px;
}
.dev-panel.is-active {
	display: flex;
}
.dev-text {
	flex: 1 1 0;
	min-width: 0;
	padding-top: 6px;
}
/* 阶段名称 + 年份 */
.dev-stage-name {
	font-size: 22px;
	font-weight: 600;
	color: #2B2620;
	margin: 0 0 16px;
	line-height: 1.5;
}
.dev-stage-name .yr {
	margin-left: 12px;
	font-size: 15px;
	font-weight: 400;
	color: #A98A52;
	letter-spacing: 1px;
}
/* 阶段概述行（标题冒号后的一句话） */
.dev-text p.dev-lead {
	padding-left: 0;
	font-size: 15px;
	color: #6E6357;
	line-height: 1.9;
	margin-bottom: 22px;
}
.dev-text p.dev-lead:before {
	display: none;
}
.dev-text p {
	position: relative;
	padding-left: 22px;
	margin: 0 0 20px;
	font-size: 16px;
	line-height: 2;
	color: #3A342C;
}
.dev-text p:last-child {
	margin-bottom: 0;
}
.dev-text p:before {
	content: '';
	position: absolute;
	left: 0;
	top: 14px;
	width: 8px;
	height: 8px;
	background: #A98A52;
}
.dev-text strong {
	color: #5C4030;
	font-weight: 600;
}
/* 右侧图片（含大年份水印） */
.dev-photo {
	flex: 0 0 42%;
	position: relative;
}
.dev-watermark {
	position: absolute;
	right: -8px;
	top: -34px;
	font-size: 130px;
	line-height: 1;
	font-weight: 700;
	color: #F1ECE4;
	z-index: 0;
	letter-spacing: -4px;
	user-select: none;
	pointer-events: none;
}
.dev-photo img {
	position: relative;
	z-index: 1;
	width: 100%;
	height: auto;
	display: block;
	border-radius: 4px;
}
/* JS 未运行时不展示时间轴空容器 */
#devTimeline:not(.is-ready) {
	display: none;
}
/* 无数据时源内容始终可读 */
.dev-source {
	font-size: 15px;
	line-height: 2;
	color: #3A342C;
}
.dev-source h2, .dev-source h3 {
	font-size: 20px;
	color: #2B2620;
	margin: 24px 0 10px;
}
.dev-ready .dev-source {
	display: none;
}
/* ==========================================================================
   响应式：≤768px
   ========================================================================== */
@media screen and (max-width: 768px) {
	.dev-wrap {
		padding: 32px 5% 50px;
	}
	.dev-head {
		margin-bottom: 28px;
	}
	.dev-head .dev-cn {
		font-size: 24px;
	}
	.dev-arrow {
		width: 38px;
		height: 38px;
	}
	.dev-years {
		margin: 0 10px;
		overflow-x: auto;
		-webkit-overflow-scrolling: touch;
	}
	.dev-year {
		flex: 0 0 auto;
		min-width: 92px;
		padding: 16px 10px;
		font-size: 16px;
	}
	.dev-panel.is-active {
		flex-direction: column;
		gap: 28px;
	}
	.dev-panel.is-photo .dev-text,
	.dev-photo {
		flex: 0 0 100%;
		width: 100%;
	}
	.dev-text p {
		font-size: 15px;
	}
	.dev-watermark {
		font-size: 90px;
		top: -24px;
	}
	.dev-panels {
		padding: 26px 0 0;
	}
	.dev-stage-name {
		font-size: 19px;
	}
}