body {
  background-image: url(../../images/banner/08.jpg);
  background-size: 1920px 401px;
}
#header-container {
  border-bottom: 0px solid rgba(51, 51, 51, 0.1);
}
#main-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}
.banner-section {
  position: relative;
  width: 100%;
  height: 271px !important;
  overflow: hidden;
}
.banner-section .banner-slider {
  width: 100%;
  height: 100%;
  position: relative;
  background-size: cover;
  background-position: left -130px;
  background-repeat: no-repeat;
}
.banner-section .banner-slider .banner-item {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.banner-section .banner-slider .banner-item .banner-content-wrapper {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1550px;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 15px;
}
.banner-section .banner-slider .banner-item .banner-content-wrapper .banner-text-box {
  width: 100%;
  border-radius: 4px;
  margin-left: 0;
  display: flex;
  flex-direction: column;
  gap: 33px;
  justify-content: flex-start;
  height: 100%;
  font-weight: 400;
  font-size: 22px;
  color: #37373C;
  line-height: 36px;
  padding-top: 35px;
}
.banner-section .banner-slider .banner-item .banner-content-wrapper .banner-text-box p {
  font-size: 21px;
  line-height: 30px;
  text-align: justify;
}
.banner-section .banner-slider .banner-item .banner-content-wrapper .banner-text-box .top-title {
  margin-bottom: 25px;
  padding-bottom: 15px;
  display: inline-block;
  font-weight: bold;
  font-size: 43px;
  color: #0044B5;
}
.banner-section .banner-slider .banner-item .banner-content-wrapper .banner-text-box .center-title {
  width: 100%;
  height: 43px;
  font-family: Microsoft YaHei;
  font-weight: bold;
  font-size: 43px;
  color: #0044B5;
  line-height: 36px;
  text-align: center;
  margin: 0 auto;
}
.banner-section .banner-slider .banner-item .banner-content-wrapper .banner-text-box .button-group {
  display: flex;
  gap: 25px;
  justify-content: flex-start;
}
.banner-section .banner-slider .banner-item .banner-content-wrapper .banner-text-box .button-group a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 150px;
  height: 56px;
  background-color: #fff;
  border-radius: 6px;
  font-weight: 400;
  font-size: 21px;
  color: #0077F1;
  cursor: pointer;
  transition: color 0s;
}
.banner-section .banner-slider .banner-item .banner-content-wrapper .banner-text-box .button-group a:hover {
  color: #fff;
  background-color: #3E72FF;
}
.banner-section .banner-slider .banner-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  z-index: 1;
}
.banner-section .banner-slider .banner-item .active {
  opacity: 1;
  z-index: 10;
}
/* 主容器 */
.timeline-container {
  width: 1550px;
  height: 600px;
  background: #fff;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
  display: flex;
  padding-top: 80px;
  gap: 50px;
  /* 左右间距 */
}
h2 {
  position: absolute;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  color: #333;
  font-size: 40px;
  font-weight: 600;
  width: 1550px;
  white-space: nowrap;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-line-clamp: 1;
}
/* --- 左侧：时间轴区域 (包含背景和滑块) --- */
.left-axis-wrapper {
  position: relative;
  width: 120px;
  /* 时间轴总宽度 */
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
/* 1. 底层背景柱体 (贯穿始终的浅灰色细条，作为轨道) */
.axis-track-bg {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 22px;
  width: 5px;
  /* 轨道宽度 */
  background-color: #DCDCDC;
  /* 轨道底色，比激活色淡一点 */
  border-radius: 2px;
  z-index: 0;
}
/* 2. 年份 Swiper (覆盖在轨道之上) */
.thumbs-swiper {
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: visible;
  /* 允许高亮块超出一点 */
}
.thumb-slide {
  width: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100px;
  /* 每个年份占据的高度，决定柱体分段长度 */
  color: #999;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
  position: relative;
  cursor: pointer;
  padding-right: 8px;
}
/* 年份文字下方的装饰点 (未激活状态) */
/* .thumb-slide::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 15px;
            transform: translateX(-50%);
            width: 8px;
            height: 8px;
            background-color: #ccc;
            border-radius: 50%;
            transition: all 0.4s ease;
            z-index: 2;
        } */
/* --- 激活状态 (核心需求) --- */
.thumb-slide.swiper-slide-thumb-active {
  color: #EA5420;
  font-size: 25px;
  font-weight: bold;
  z-index: 3;
}
/* 激活时的实心柱体效果 */
.thumb-slide.swiper-slide-thumb-active::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  right: 19px;
  width: 12px;
  /* 激活柱体的宽度 */
  background-color: #F55A10;
  border-radius: 6px;
  z-index: 5;
  /* 放在文字后面，但在轨道前面 */
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  /* 增加一点立体感 */
}
/* 激活时的装饰点变色 */
.thumb-slide.swiper-slide-thumb-active::after {
  background-color: #333;
  width: 10px;
  height: 10px;
  bottom: 10px;
}
/* --- 右侧：内容区域 --- */
.content-swiper {
  flex: 1;
  height: 100%;
  position: relative;
}
.slide-content {
  height: 100%;
  overflow: hidden;
  padding: 20px 30px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
}
.year-big-title {
  position: relative;
  flex: 0 0 auto;
  z-index: 2;
  background: #fff;
  font-size: 56px;
  font-weight: 900;
  color: #DCDCDC;
  /* 大标题颜色呼应 */
  margin: 0 0 30px 0;
  line-height: 1;
  opacity: 0.6;
  transition: opacity 0.3s;
}
/* 激活年的大标题完全不透明 */
.event-list {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding-right: 6px;
}
.swiper-slide-active .year-big-title {
  opacity: 1;
  color: #F55A10;
}
.event-item {
  margin-bottom: 30px;
  padding-left: 20px;
  border-left: 3px solid #DCDCDC;
  line-height: 1.8;
  color: #555;
  font-size: 16px;
  text-align: justify;
  background: #fafafa;
  padding: 15px 15px 15px 25px;
  border-radius: 0 8px 8px 0;
}
.event-date {
  font-weight: bold;
  color: #333;
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
  background: #ccc;
  border-radius: 3px;
}