* {
  padding: 0;
  margin: 0;
}
html,
body {
  height: 100%;
  box-sizing: border-box;
}
.container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.container .site_info {
  position: fixed;
  top: 150px;
  left: 148px;
}
.container .site_info .name1 {
  font-family: Microsoft YaHei,
        Microsoft YaHei;
  font-weight: bold;
  font-size: 40px;
  color: #ffffff;
}
.container .site_info .name2 {
  font-family: Microsoft YaHei,
        Microsoft YaHei;
  font-weight: 400;
  font-size: 22px;
  color: #ffffff;
}
.container .side_bg {
  width: 63%;
  height: 100%;
  /* 两张图分层：上层 left2（图标，带透明通道），下层 left1（大背景）。
     百分比按原始 1220x1080 设计稿换算，任意屏幕尺寸下叠加效果与设计稿一致 */
  background-image: url(../assets/left2.png), url(../assets/left1.png);
  background-repeat: no-repeat, no-repeat;
  background-position: 47.25% 58.5%, center center;
  background-size: 60% 42.04%, 100% 100%;
}
.container .content_part {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  background: #fff;
}
.container .content_part .form_container {
  width: 380px;
  padding: 40px;
}
.container .content_part .form_container .hi {
  color: #1890ff;
  font-size: 28px;
  font-weight: bold;
  font-family: "Microsoft YaHei", sans-serif;
}
.container .content_part .form_container .welcome {
  color: #333;
  font-size: 28px;
  margin-top: 8px;
  margin-bottom: 30px;
  font-family: "Microsoft YaHei", sans-serif;
}
.container .content_part .form_container .lang_tab {
  margin-bottom: 24px;
  background: #deeaf6;
}
.container .content_part .form_container .lang_tab .lang_content {
  padding: 3px 4px;
  display: flex;
}
.container .content_part .form_container .lang_tab .lang_content .tab_item {
  flex: 1;
  text-align: center;
  font-size: 14px;
  padding: 8px 0;
  color: #1890ff;
  cursor: pointer;
}
.container .content_part .form_container .lang_tab .lang_content .tab_item:first-child {
  border-radius: 6px 0 0 6px;
  border-right: none;
}
.container .content_part .form_container .lang_tab .lang_content .tab_item:last-child {
  border-radius: 0 6px 6px 0;
}
.container .content_part .form_container .lang_tab .lang_content .tab_item.active {
  color: black;
  background: #fff;
}
.container .content_part .form_container .form_part .formitem {
  display: flex;
  align-items: center;
  border-bottom: 1px solid #d9d9d9;
  padding: 0 15px;
  margin-bottom: 20px;
  height: 48px;
  transition: border-color 0.3s;
}
.container .content_part .form_container .form_part .formitem img {
  width: 20px;
  height: 20px;
  margin-right: 12px;
}
.container .content_part .form_container .form_part .formitem input {
  flex: 1;
  font-size: 14px;
  color: #333;
  font-family: "Microsoft YaHei", sans-serif;
  outline: none;
  border: none;
}
.container .content_part .form_container .form_part .formitem input::placeholder {
  color: #bbb;
}
.container .content_part .form_container .form_part .forget_pwd_wrap {
  text-align: right;
  margin-top: -8px;
  margin-bottom: 16px;
}
.container .content_part .form_container .form_part .forget_pwd_wrap .forget_pwd {
  display: inline-block;
  color: #66b1ff;
  font-size: 13px;
  text-decoration: none;
  cursor: pointer;
}
.container .content_part .form_container .form_part .forget_pwd_wrap .forget_pwd:hover {
  color: #3a97ff;
  text-decoration: none;
}
.container .content_part .form_container .btn_group {
  display: flex;
  gap: 16px;
}
.container .content_part .form_container .btn_group .btn {
  cursor: pointer;
  flex: 1;
  height: 40px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
}
.container .content_part .form_container .btn_group .login_btn {
  background-color: #3478c8;
  color: #ffffff;
}
.container .content_part .form_container .btn_group .register_btn {
  background-color: #eef1f6;
  color: #0f2440;
}