:root {
				--primary-color: #8B0000;
				--text-dark: #333333;
				--text-gray: #666666;
				--text-light: #999999;
				--bg-white: #ffffff;
			}

			* {
				margin: 0;
				padding: 0;
				box-sizing: border-box;
			}

			body {
				font-family: 'Helvetica Neue', Arial, 'Microsoft YaHei', sans-serif;
				color: var(--text-dark);
				line-height: 1.6;
				background: #fff;
			}

			.container {
				max-width: 1400px;
				margin: 0 auto;
				padding: 0 5%;
			}

			.section-padding {
				padding: 100px 0;
			}

			.section-title-en {
				font-size: 1.5rem;
				color: var(--text-light);
				text-transform: uppercase;
				letter-spacing: 2px;
				margin-bottom: 10px;
				display: block;
			}

			.section-title-cn {
				font-size: 2rem;
				color: var(--text-dark);
				font-weight: 600;
				margin-bottom: 20px;
				position: relative;
				display: inline-block;
			}

			.section-title-cn::after {
				content: '';
				position: absolute;
				bottom: -8px;
				left: 0;
				width: 40px;
				height: 2px;
				background: var(--primary-color);
			}

			/* ================= 发展历程模块 ================= */
			.timeline-section {
				background: #fff;
			}

			.timeline-header {
				    display: flex;
				    /* align-items: center; */
				    gap: 20px;
				    margin-bottom: 50px;
				    flex-direction: column;
			}

			.timeline-images {
				display: flex;
				gap: 15px;
			}

			.timeline-images img {
				width: 180px;
				height: 120px;
				object-fit: cover;
				border-radius: 8px;
				filter: grayscale(100%);
				transition: filter 0.3s;
			}

			.timeline-images img:hover {
				filter: grayscale(0%);
			}

			.timeline-title h2 {
				font-size: 1.8rem;
				margin-bottom: 5px;
			}
			.timeline-title h2 .num {
				font-size: 2.8rem;
				color: var(--primary-color);
				
			}

			.timeline-title p {
				color: var(--text-gray);
				font-size: 0.95rem;
			}

			.timeline-layout {
				display: grid;
				grid-template-columns: 100px 1fr;
				gap: 40px;
				position: relative;
			}

			/* 左侧年份列表 */
			.year-list {
				list-style: none;
				position: relative;
			}


			.year-item {
				padding: 15px 0;
				cursor: pointer;
				position: relative;
				transition: all 0.3s ease;
			}


			.year-item span {
				color: var(--text-light);
				font-size: 0.9rem;
				transition: color 0.3s ease;
			}

			.year-item.active span {
				color: var(--primary-color);
				font-weight: 600;
			}

			/* 右侧 Swiper 内容区 */
			.swiper-container {
				width: 100%;
				overflow: hidden;
			}

			.swiper-slide {
				padding: 20px 0;
			}

			.slide-content {
				display: flex;
				flex-direction: column;
				gap: 20px;
			}

			.slide-year {
				font-size: 2rem;
				color: var(--primary-color);
				font-weight: 600;
				margin-bottom: 10px;
				padding-left: 4rem;
			}

			.slide-line {
				height: 2px;
				background: #e0e0e0;
				margin-bottom: 20px;
				position: relative;
			}

			.slide-line::before {
				content: '';
				position: absolute;
				left: 0;
				top: 0;
				height: 100%;
				width: 0;
				background: var(--primary-color);
				transition: width 0.5s ease;
			}

			.swiper-slide-active .slide-line::before {
				width: 100%;
			}

			.slide-text {
				color: var(--text-gray);
				line-height: 1.7;
				font-size: 0.95rem;
				padding-left: 4rem;
			}

			.slide-text strong {
				display: block;
				margin-bottom: 8px;
			}

			/* 导航按钮 */
			.swiper-nav {
				display: flex;
				/* justify-content: center; */
				gap: 15px;
				margin-top: 30px;
				margin-left: 140px;
			}

			.swiper-btn {
				width: 40px;
				height: 40px;
				border-radius: 50%;
				background: #f5f5f5;
				border: 1px solid #ddd;
				display: flex;
				align-items: center;
				justify-content: center;
				cursor: pointer;
				transition: all 0.3s ease;
				font-size: 1.2rem;
				color: var(--text-gray);
			}

			.swiper-btn:hover {
				background: var(--primary-color);
				color: #fff;
				border-color: var(--primary-color);
			}

			/* 响应式 */
			@media (max-width: 768px) {
				.timeline-layout {
					grid-template-columns: 1fr;
					gap: 0px;
				}

				.year-list {
					display: flex;
					overflow-x: auto;
					padding-bottom: 10px;
					gap: 20px;
				}

				.year-list::before {
					display: none;
				}

				.year-item::before {
					display: none;
				}

				.year-item {
					padding: 10px 15px;
					background: #f9f9f9;
					border-radius: 8px;
					white-space: nowrap;
				}

				.year-item.active {
					background: rgba(139, 0, 0, 0.1);
				}

				.timeline-images {
					flex-wrap: wrap;
				}

				.timeline-images img {
					width: 140px;
					height: 100px;
				}
			}