html,
body,
.container {
 margin:0;padding:0;
}
  .button { margin-top:1em; float: right;
    background-color: #d4a024; /* 初始颜色 */
    color: #FFFFFF; /* 文字颜色 */
    width: 200px; /* 宽度 */
    height: 40px; /* 高度 */
    text-align: center; /* 文字居中 */
    line-height: 40px; /* 垂直居中文字 */
    border: none; /* 去除边框 */
    cursor: pointer; /* 鼠标指针变化 */
    transition: background-color 0.3s; /* 渐变效果时间 */
    display: inline-block; /* 确保按钮可以水平显示 */
	 font-size:1.1em;
	 border-radius: 10px; /* 边角圆滑半径 */
  }

  .button:hover {
    background-color: #FF6600; /* 鼠标悬停时的背景颜色 */
	color:#FFFFFF;
  }
body {
  font-family: 'Open Sans', sans-serif;
  font-size: 14px;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fff;
  flex-direction: column;
}

.title {
  font-size: 38px;
  color: #616161;
  font-style: italic;
  font-weight: 800;
}

.timeline {
  width: 100%;
  background-color: #fff;
  box-shadow: 0 5px 25px 5px rgba(0, 0, 0, 0.2);
}
.timeline .swiper-container {
  height: 600px;
  width: 100%;
  position: relative;
}
.timeline .swiper-wrapper {
  transition: 2s cubic-bezier(0.68, -0.4, 0.27, 1.34) 0.2s;
}
.timeline .swiper-slide {
  position: relative;
  color: #fff;
  overflow: hidden;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}
.timeline .swiper-slide::after {
  content: "";
  position: absolute;
  z-index: 1;
  right: -115%;
  bottom: -10%;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  box-shadow: -230px 0 150px 60vw rgba(0, 0, 0, 0.7);
  border-radius: 100%;
}
.timeline .swiper-slide-content {
	position: absolute;
	text-align: center;
	width: 70%;
	max-width: 500px;
	right: 50%;
	top: 13%;
	-webkit-transform: translate(50%, 0);
	transform: translate(50%, 0);
	font-size: 1.2em;
	z-index: 2;
}
.timeline .swiper-slide .timeline-year {
  display: block;
  font-style: italic;
  font-size: 42px;
  margin-bottom: 50px;
  -webkit-transform: translate3d(20px, 0, 0);
          transform: translate3d(20px, 0, 0);
  color: #d4a024;
  font-weight: bold;
  opacity: 0;
  transition: .2s ease .4s;
}
.timeline .swiper-slide .timeline-title {
  font-weight: 800;
  font-size: 34px;
  margin: 0 0 30px;
  opacity: 0;
  -webkit-transform: translate3d(20px, 0, 0);
          transform: translate3d(20px, 0, 0);
  transition: .2s ease .5s;
}
.timeline .swiper-slide .timeline-text {
	line-height: 2em; text-align:left;
	opacity: 0;
	-webkit-transform: translate3d(20px, 0, 0);
	transform: translate3d(20px, 0, 0);

  transition: .2s ease .6s;
}
.timeline .swiper-slide-active .timeline-year {
  opacity: 1;
  -webkit-transform: translate3d(0, 0, 0);
          transform: translate3d(0, 0, 0);
  transition: .4s ease 1.6s;
}
.timeline .swiper-slide-active .timeline-title {
  opacity: 1; 
  -webkit-transform: translate3d(0, 0, 0);
          transform: translate3d(0, 0, 0);
  transition: .4s ease 1.7s;
}
.timeline .swiper-slide-active .timeline-text {
  opacity: 1; text-align:left;
  -webkit-transform: translate3d(0, 0, 0);
          transform: translate3d(0, 0, 0);
  transition: .4s ease 1.8s;
}
.timeline .swiper-pagination {
  right: 15% !important;
  height: 100%;
  display: none;
  flex-direction: column;
  justify-content: center;
  font-style: italic;
  font-weight: 300;
  font-size: 18px;
  z-index: 1;
}
.timeline .swiper-pagination::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 0;
  height: 100%;
  width: 1px;
  background-color: rgba(255, 255, 255, 0.2);
}
.timeline .swiper-pagination-bullet {
  width: auto;
  height: auto;
  text-align: left;
  opacity: 1;
  background: transparent;
  color: #d4a024;
  margin: 10px 0 !important;
  position: relative;
}
.timeline .swiper-pagination-bullet::before {
  content: "";
  position: absolute;
  top: 8px;
  left: -32.5px;
  width: 6px;
  height: 6px;
  border-radius: 100%;
  background-color: #d4a024;
  -webkit-transform: scale(0);
          transform: scale(0);
  transition: .2s;
}
.timeline .swiper-pagination-bullet-active {
  color: #d4a024;
}
.timeline .swiper-pagination-bullet-active::before {
  -webkit-transform: scale(1);
          transform: scale(1);
}
.timeline .swiper-button-next,
.timeline .swiper-button-prev {
  background-size: 20px 20px;
  top: 5%;
  width: 20px;
  height: 20px;
  margin-top: 0;
  z-index: 2;
  transition: .2s;
}
.timeline .swiper-button-prev {
  left: 8%;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20viewBox%3D'0%200%2027%2044'%3E%3Cpath%20d%3D'M0%2C22L22%2C0l2.1%2C2.1L4.2%2C22l19.9%2C19.9L22%2C44L0%2C22L0%2C22L0%2C22z'%20fill%3D'%23d4a024'%2F%3E%3C%2Fsvg%3E");
}
.timeline .swiper-button-prev:hover {
  -webkit-transform: translateX(-3px);
          transform: translateX(-3px);
}
.timeline .swiper-button-next {
  right: 8%;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg%20xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg'%20viewBox%3D'0%200%2027%2044'%3E%3Cpath%20d%3D'M27%2C22L27%2C22L5%2C44l-2.1-2.1L22.8%2C22L2.9%2C2.1L5%2C0L27%2C22L27%2C22z'%20fill%3D'%23d4a024'%2F%3E%3C%2Fsvg%3E");
}
.timeline .swiper-button-next:hover {
  -webkit-transform: translateX(3px);
          transform: translateX(3px);
}
@media screen and (min-width: 768px) {
  .timeline .swiper-slide::after {
    right: -30%;
    bottom: -8%;
    width: 440px;
    height: 50%;
    box-shadow: -230px 0 150px 50vw rgba(0, 0, 0, 0.7);
  }
  .timeline .swiper-slide-content {
    right: 40%;
    top: 50%;
    -webkit-transform: translateY(-50%);
            transform: translateY(-50%);
    width: 500px;
    text-align: right;
  }
  .timeline .swiper-slide .timeline-year {
    margin-bottom: 0;
    font-size: 32px;
  }
  .timeline .swiper-slide .timeline-title {
    font-size: 46px;
    margin: 0;
  }
  .timeline .swiper-pagination {
    display: flex;
  }
  .timeline .swiper-button-prev {
    top: 5%;
    left: auto;
    right: 15%;
    -webkit-transform: rotate(90deg) translate(0, 10px);
            transform: rotate(90deg) translate(0, 10px);
  }
  .timeline .swiper-button-prev:hover {
    -webkit-transform: rotate(90deg) translate(-3px, 10px);
            transform: rotate(90deg) translate(-3px, 10px);
  }
  .timeline .swiper-button-next {
    top: auto;
    bottom: 5%;
    right: 15%;
    -webkit-transform: rotate(90deg) translate(0, 10px);
            transform: rotate(90deg) translate(0, 10px);
  }
  .timeline .swiper-button-next:hover {
    -webkit-transform: rotate(90deg) translate(3px, 10px);
            transform: rotate(90deg) translate(3px, 10px);
  }
}
@media screen and (min-width: 1024px) {
  .timeline .swiper-slide::after {
    right: -20%;
    bottom: -12%;
    width: 500px;
    height: 50%;
    box-shadow: -230px 0 150px 39vw rgba(0, 0, 0, 0.7);
  }
  .timeline .swiper-slide-content {
    right: 30%;
  }
}