* {
  margin: 0;
  padding: 0;
  border: 0;
  list-style: none;
  outline: none;
  font-style: normal;
  text-decoration: none;
  vertical-align: baseline;
  box-sizing: border-box;
  font-family: "Microsoft YaHei";
}

a {
  color: #000;
  text-decoration: none;
}

.wrap {
  width: 1200px;
  margin: 0 auto;
}

.flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

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

.ac {
  text-align: center;
}

.b {
  font-weight: bold;
}

html,
body {
  font-size: 16px;
  background-color: #fff;
}

.header {
  height: 60px;
}

.header .logo_box .logo {
  width: 24px;
  height: 24px;
  margin-right: 10px;
}

.header .install {
  color: #fff;
  width: 100px;
  height: 28px;
  line-height: 28px;
  border-radius: 5px;
  background-color: #f83030;
}

.header .install:hover {
  opacity: .8;
}

.intro {
  background-color: #e6efff;
  height: 800px;
}

.intro .intro_content {
  position: relative;
}

.intro .intro_content .content_logo {
  width: 100px;
  margin-top: 80px;
  margin-bottom: 5px;
}

.intro .intro_content .content_name {
  font-size: 20px;
  margin-bottom: 20px;
}

.intro .intro_content .content_text {
  font-size: 30px;
  margin-bottom: 30px;
}

.intro .intro_content .content_desc {
  width: 740px;
  color: #444343;
  margin: 0 auto;
  line-height: 28px;
  margin-bottom: 30px;
}

.intro .intro_content .content_install {
  display: inline-block;
  width: 120px;
  height: 30px;
  line-height: 30px;
  color: #fff;
  border-radius: 5px;
  background-color: #f83030;
}

.intro .intro_content .content_install:hover {
  opacity: .8;
}

.intro .intro_content .content_con {
  background-color: #f7f7f7;
  width: 1000px;
  margin: 50px auto 0;
  padding: 30px 50px;
}

.intro .intro_content .content_con .Microsoft_logo {
  height: 50px;
}

.intro .intro_content .content_con .con_tip {
  color: #444343;
  margin: 20px 0 40px;
}

.intro .intro_content .content_con .con_list {
  flex-wrap: wrap;
  align-content: center;
  row-gap: 30px;
}

.intro .intro_content .content_con .con_list .list_item {
  width: 25%;
  flex-direction: column;
}

.intro .intro_content .content_con .con_list .list_item img {
  height: 100px;
}

.intro .intro_content .content_con .con_list .list_item p {
  color: #444343;
  margin-top: 10px;
}

.function_intro {
  margin-top: 260px;
  background-color: #f6f9fe;
}

.function_intro .intro_title {
  font-size: 28px;
  height: 100px;
  line-height: 100px;
}

.function_intro .intro_list {
  margin-bottom: 20px;
  background-color: #e6effe;
}

.function_intro .intro_list:last-child {
  margin: 0;
}

.function_intro .intro_list .list_item {
  height: 300px;
  justify-content: space-around;
}

.function_intro .intro_list .list_item .item_text {
  flex-direction: column;
}

.function_intro .intro_list .list_item .item_text img {
  width: 50px;
}

.function_intro .intro_list .list_item .item_text p {
  font-size: 18px;
  margin: 30px 0 20px;
}

.function_intro .intro_list .list_item .item_text span {
  color: #0d1430;
}

.function_intro .intro_list .list_item .item_img {
  height: 250px;
}

.attr_more {
  padding-top: 80px;
  background-color: #f6f9fe;
}

.attr_more .more_title {
  color: #1f95f3;
  font-size: 24px;
  padding-bottom: 8px;
  border-bottom: 3px solid #1f95f3;
  width: 270px;
  margin: 0 auto;
}

.attr_more .more_hr {
  border-bottom: 1px solid #ccc;
}

.attr_more .more_list {
  margin-top: 40px;
}

.attr_more .more_list .list_item {
  flex-direction: column;
  width: 30%;
  background-color: #fff;
  height: 174px;
  padding: 20px;
  border-radius: 8px;
}

.attr_more .more_list .list_item .item_icon {
  width: 30px;
  height: 30px;
  border-radius: 3px;
  background-color: #e7f4fd;
}

.attr_more .more_list .list_item .item_title {
  font-size: 17px;
  margin: 20px 0;
}

.attr_more .more_list .list_item .item_text {
  color: #616469;
}

.question {
  background-color: #f6f9fe;
  overflow: hidden;
  padding-bottom: 50px;
}

.question .question_title {
  font-size: 28px;
  margin-top: 50px;
}

.question .question_list {
  margin-top: 40px;
  background-color: #fff;
}

.question .question_list .list_item .item_top {
  height: 64px;
  padding-left: 30px;
  border: 3px dotted transparent;
  border-bottom: 1px solid #ccc;
  cursor: pointer;
}

.question .question_list .list_item .item_top.focus {
  border: 3px dotted currentColor;
}

.question .question_list .list_item .item_top svg {
  margin-right: 5px;
}

.question .question_list .list_item .item_top svg.active {
  transform: rotateZ(90deg);
}

.question .question_list .list_item .item_top span {
  font-weight: 600;
}

.question .question_list .list_item .item_bottom {
  padding: 10px 0 10px 53px;
  display: none;
}

.question .question_list .list_item .item_bottom.active {
  display: block;
}

.footer {
  height: 50px;
  background-color: #1e2537;
}

.footer .footer_text {
  align-items: end;
  height: 50px;
  color: #99a2ab;
  font-size: 14px;
  padding-bottom: 10px;
  text-decoration: underline;
}