body,
h1,
h2,
h3 {
  margin: 0;
  font-weight: 400;
}
section {
  width: 100%;
  background: radial-gradient(circle, #131524, #000);
  display: table;
}
section .container {
  width: 1200px;
  margin: 80px auto;
}
section .container .content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-left: 100px;
  flex: 1;
}
section .container .content h2:first-child {
  font-size: 56px;
  color: #128AFF;
}
section .container .content h2:last-of-type {
  font-size: 56px;
  color: #fff;
}
section .container .content h3 {
  font-size: 48px;
  color: #fff;
}
section .container .content .tip {
  padding: 40px 0;
  font-size: 14px;
  color: #fff;
  opacity: 0.7;
}
section .container .content a {
  display: block;
  text-align: center;
  line-height: 50px;
  width: 210px;
  height: 50px;
  background-color: #fff;
  border-radius: 8px;
  border: none;
  color: #128AFF;
  font-size: 16px;
  transition: 0.2s;
}
section .container .content a:hover {
  background-color: #128AFF;
  color: #fff;
}
section .container .content a:active {
  background-color: #1f6cb7;
}
section .container.reverse {
  flex-flow: row-reverse;
}
section .container.reverse .content {
  padding-left: 0;
}
section .flex {
  display: flex;
}
.intro .container .title {
  font-size: 48px;
  color: #fff;
  margin-bottom: 75px;
  text-align: center;
}
.intro .container .list {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -30px;
}
.intro .container .list .li {
  width: 28.5%;
  margin: 0 30px;
  background-color: #202335;
  padding: 20px;
  box-sizing: border-box;
  margin-bottom: 30px;
  border-radius: 8px;
  padding-bottom: 38px;
}
.intro .container .list .li .top {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}
.intro .container .list .li .top .img,
.intro .container .list .li .top img {
  width: 48px;
  height: 48px;
}
.intro .container .list .li .top .text {
  padding-left: 15px;
  font-size: 18px;
  color: #fff;
}
.intro .container .list .li .bottom {
  font-size: 12px;
  color: #fff;
  opacity: 0.6;
}