* {
  box-sizing: border-box;
}
/* 默认设置（针对小屏幕设备） */
html {
  font-size: 62.5%;
  /* 1rem = 10px */
  font-family: "OPENSANS";
}
@font-face {
  font-family: "OPENSANS";
  src: url("https://global.uniview.com/tres/images/2022//fonts/OPENSANS-REGULAR.woff2") format("woff2"), url("https://global.uniview.com/tres/images/2022//fonts/OPENSANS-REGULAR.woff") format("woff"), url("https://global.uniview.com/tres/images/2022//fonts/OPENSANS-REGULAR.ttf") format("truetype"), url("https://global.uniview.com/tres/images/2022//fonts/OPENSANS-REGULAR.eot") format("embedded-opentype"), url("https://global.uniview.com/tres/images/2022//fonts/OPENSANS-REGULAR.svg") format("svg");
  font-weight: normal;
  font-style: normal;
}
/* 中等屏幕设备（例如平板） */
@media screen and (min-width: 768px) {
  html {
    font-size: 100%;
    /* 如果基础是16px，那么此时 1rem = 14px */
  }
}
/* 大屏幕设备（例如笔记本、台式机） */
@media screen and (min-width: 1024px) {
  html {
    font-size: 100%;
    /* 此时 1rem = 16px */
  }
}
/* 超大屏幕设备 */
@media screen and (min-width: 1440px) {
  html {
    font-size: 112.5%;
    /* 此时 1rem = 18px */
  }
}
body {
  padding: 0;
  margin: 0;
  background-color: #1F41E0;
  line-height: 1.2;
  color: white;
  display: flex;
  flex-direction: column;
}
h1,
h2,
h3,
h4,
h5,
p,
ul,
li {
  padding: 0;
  margin: 0;
}
.un-gb-pt-st-wrap .first-screen {
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  color: white;
  text-align: center;
  padding: 1.11rem;
  padding-bottom: 0;
  max-width: 66.66rem;
  margin: 0 auto;
  /* 关键帧动画 */
}
.un-gb-pt-st-wrap .first-screen .logo {
  align-self: end;
  max-width: 5.55rem;
}
.un-gb-pt-st-wrap .first-screen .logo img {
  width: 100%;
}
.un-gb-pt-st-wrap .first-screen h1 {
  color: #4AFFC7;
  font-size: 4rem;
  line-height: 1.4;
  text-align: left;
  font-weight: 700;
  align-self: flex-start;
}
.un-gb-pt-st-wrap .first-screen p {
  text-align: left;
  align-self: flex-start;
  font-size: 1.6rem;
  line-height: 1.6;
}
@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}
.un-gb-pt-st-wrap .first-screen .btu {
  max-width: 2.5rem;
  animation: bounce 1.2s ease-in-out infinite;
}
.un-gb-pt-st-wrap .first-screen .btu img {
  width: 100%;
  filter: brightness(68%);
}
.un-gb-pt-st-wrap .first-screen .btu:hover {
  cursor: pointer;
  animation-play-state: paused;
}
.un-gb-pt-st-wrap .first-screen .btu:hover img {
  filter: brightness(100%);
}
.un-gb-pt-st-wrap.first-bg {
  background-image: url(../img/first-wrap-bg.png);
  background-repeat: no-repeat;
  background-position: left top;
  background-size: cover;
}
.un-gb-pt-st-wrap .title-img {
  padding-top: 7rem;
  max-width: 66rem;
  margin: 0 auto;
  margin-bottom: 2rem;
}
.un-gb-pt-st-wrap .title-img img {
  width: 100%;
}
.un-gb-pt-st-wrap .b-b-wrap h1 {
  text-align: center;
  font-size: 4rem;
  line-height: 1;
  margin-bottom: 5rem;
  color: #4AFFC7;
}
.un-gb-pt-st-wrap .txt-box {
  max-width: 66.66rem;
  margin: 0 auto;
}
.un-gb-pt-st-wrap .date-box {
  max-width: 72.22rem;
  margin: 0 auto;
}
.un-gb-pt-st-wrap .txt-box {
  padding: 0 1.11rem;
}
.un-gb-pt-st-wrap .txt-box h2 {
  font-size: 3.55rem;
  line-height: 1.2;
  margin-bottom: 0.55rem;
}
.un-gb-pt-st-wrap .txt-box p {
  font-size: 1.33rem;
  line-height: 1.4;
  margin-bottom: 1.66rem;
}
.un-gb-pt-st-wrap .txt-box .hr-line {
  height: 9px;
  width: 100px;
  background-color: #4AFFC7;
  border: 0;
  text-align: left;
  display: inline-block;
  margin-bottom: 1.11rem;
}
.un-gb-pt-st-wrap .txt-box h3 {
  color: #4AFFC7;
  font-size: 2.22rem;
  line-height: 1.2;
  margin-bottom: 0.55rem;
}
.un-gb-pt-st-wrap .txt-box .blue {
  color: #4AFFC7;
}
.un-gb-pt-st-wrap .date-box {
  background-color: #234FE3;
  border-radius: 10px;
  padding: 1.11rem;
}
.un-gb-pt-st-wrap .date-box li {
  list-style-type: none;
  position: relative;
}
.un-gb-pt-st-wrap .date-box li::before {
  content: "";
  /* 伪元素必须内容 */
  position: absolute;
  left: 0.444rem;
  /* 从左边缘偏移 10px */
  top: 1.8333rem;
  /* 从顶部开始 */
  bottom: 0;
  /* 延伸到底部 */
  border-left: 2px solid #4AFFC7;
  /* 模拟左边框：粗细、样式、颜色 */
}
.un-gb-pt-st-wrap .date-box li h4 {
  font-size: 2.22rem;
  line-height: 1;
  margin-bottom: 0.55rem;
  position: relative;
  padding-left: 2.66rem;
}
.un-gb-pt-st-wrap .date-box li h4::before {
  content: '';
  /* 伪元素必须设置 content 属性 */
  position: absolute;
  left: -0.11rem;
  /* 定位到左侧 */
  top: 50%;
  /* 垂直居中 */
  transform: translateY(-50%);
  /* 微调垂直位置以实现精确居中 */
  width: 1.11rem;
  height: 1.11rem;
  background-color: #4AFFC7;
  /* 圆点的颜色 */
  border-radius: 50%;
}
.un-gb-pt-st-wrap .date-box li p {
  font-size: 1.33rem;
  line-height: 1.4;
  padding-bottom: 2.22rem;
  padding-left: 2.66rem;
  margin-bottom: 2px;
}
.un-gb-pt-st-wrap .ind-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 2.22rem 0;
}
.un-gb-pt-st-wrap .ind-wrap img {
  width: 100%;
}
.un-gb-pt-st-wrap .ind-wrap p {
  max-width: 66.66rem;
  font-size: 1.33rem;
  line-height: 1.8;
  margin: 2.22rem 0;
}
.un-gb-pt-st-wrap .ind-wrap h2 {
  font-size: 3.55rem;
  max-width: 66.66rem;
  text-align: center;
}
@media screen and (max-width: 768px) {
  .un-gb-pt-st-wrap .first-screen h1 {
    color: #4AFFC7;
    font-size: 5rem;
    line-height: 1.4;
    text-align: left;
    font-weight: bold;
    align-self: flex-start;
  }
  .un-gb-pt-st-wrap .first-screen p {
    text-align: left;
    align-self: flex-start;
    font-size: 1.8rem;
    line-height: 1.6;
  }
  .un-gb-pt-st-wrap .title-img {
    padding: 0 1rem;
    padding-top: 7rem;
    max-width: 66rem;
    margin: 0 auto;
    margin-bottom: 6rem;
  }
  .un-gb-pt-st-wrap .txt-box p {
    font-size: 1.6rem;
    line-height: 1.4;
    margin-bottom: 1.66rem;
  }
  .un-gb-pt-st-wrap .ind-wrap p {
    max-width: 66.66rem;
    font-size: 1.6rem;
    line-height: 1.8;
    margin: 2.22rem 0;
    padding: 0 1rem;
  }
  .un-gb-pt-st-wrap .ind-wrap h2 {
    font-size: 3.55rem;
    max-width: 66.66rem;
    padding: 0 1rem;
  }
}