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

a {
  text-decoration: none;
  color: #c5c5c5;
}

img {
  vertical-align: middle;
}

body {
  margin: 0;
  font-size: 0;
  color: #c5c5c5;
  font-size: 18px;
  background: #000 url("./images/mask_bg.png") top center no-repeat;
  background-size: 1440px 820px;
}

.text-white {
  color: #fff;
}

.header_content,
.main_container,
.footer_container {
  margin: 0 auto;
  padding: 0 113px;
  width: 1420px;
}

.header_container {
  height: 110px;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
}
.header_content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  padding: 0 50px;
}
.logo {
  margin-right: 10px;
  width: 60px;
  height: 60px;
}

.app_name {
  width: 129px;
  height: 38px;
}

.flex-x-center {
  display: flex;
  align-items: center;
}

.link_list {
  display: flex;
  align-items: center;
  color: #fff;
}

.link_list > div {
  margin-left: 30px;
}

.main_container {
  padding-top: 70px;
  padding-bottom: 120px;
  text-align: center;
}

.be_brave {
  margin-bottom: 25px;
  width: 278px;
  height: 182px;
}

.banner_container {
  margin-top: 70px;
  padding: 10px;
  width: 1100px;
  background: #402616;
  border-radius: 8px;
}

.banner_content {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 530px;
  background:
    linear-gradient(227deg, #fcaaff 0%, #ffffc2 50%, #acfbdb 100%), #f3f4f5;
  border-radius: 8px;
}

.banner_img {
  width: 1000px;
  height: 391px;
}

.margin_x_auto {
  margin-left: auto;
  margin-right: auto;
}

.why_container {
  margin: 140px 0 150px;
}

.why_icon {
  margin-bottom: 25px;
  width: 442px;
}

.why_list {
  margin-top: 52px;
  display: flex;
  justify-content: center;
}

.why_list_item {
  margin: 0 12.5px;
  padding: 30px 30px 0;
  width: 280px;
  height: 290px;
  text-align: left;
  background: #151515;
  border-radius: 25px;
  border: 1px solid #333333;
}

.why_list_item_icon {
  margin-bottom: 25px;
  width: 56px;
  height: 56px;
}

.why_list_item_title {
  margin-bottom: 9px;
  font-size: 20px;
  color: #fff;
}

.why_list_item_desc {
  color: #999;
}

.platform_container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.platform_left {
  display: flex;
  align-items: end;
  margin-right: 60px;
  padding: 25px 30px;
  width: 575px;
  height: 500px;
  color: #fff;
  background: url("./images/platform_banner.png") no-repeat;
  background-size: cover;
}

.platform_right {
  text-align: left;
  width: 560px;
}

.platform_for_img {
  margin-bottom: 30px;
  width: 352px;
  height: 130px;
}

.platform_desc {
  margin-bottom: 30px;
  color: #999;
}

.footer_content {
  display: flex;
  justify-content: space-between;
}

.footer_title {
  height: 39px;
  margin-bottom: 20px;
  font-size: 30px;
  color: #fff;
}

.footer_desc {
  max-width: 510px;
  color: #c5c5c5;
}
.footer_desc + .footer_desc {
  margin-top: 15px;
}