html body {
  padding: 0;
  margin: 0;
  overflow-x: hidden;
}
p,
h1,
h2,
h3,
ul,
i {
  margin: 0;
}
i {
  font-style: normal;
}
.top {
  width: 100%;
  height: 579px;
  background: url(../image/tutorial/228189141229155190-2x.webp) no-repeat;
  background-size: 100% 100%;
  display: flex;
  justify-content: center;
  padding-top: 70px;
}
.top .top_info {
  height: 100%;
  width: 1322px;
  display: flex;
  justify-content: space-between;
}
.top .top_info .right {
  display: flex;
  flex: 1;
  margin-top: 72px;
  position: relative;
}
.top .top_info .right > div {
  position: absolute;
  right: -8%;
}
.top .top_info .right > div > img {
  width: 780px;
  height: 469px;
}
.top .top_info .left {
  margin-top: 140px;
}
.top .top_info .left .left_top {
  display: flex;
  align-items: center;
  margin-bottom: 4px;
}
.top .top_info .left .left_top img {
  width: 24px;
  height: 24px;
  margin-right: 6px;
}
.top .top_info .left .left_top span {
  font-weight: bold;
  font-size: 14px;
  color: #ffffff;
  line-height: 19px;
  letter-spacing: 1px;
}
.top .top_info .left .left_info p {
  font-weight: bold;
  font-size: 44px;
  color: #ffffff;
  line-height: 60px;
  margin: 0;
  margin-bottom: 4px;
}
.top .top_info .left .left_info > span {
  font-size: 14px;
  color: #ffffff;
  line-height: 19px;
}
/* .top .top_info .left .left_footer {
  display: flex;
  margin-top: 34px;
}
.top .top_info .left .left_footer > span {
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}
.top .top_info .left .left_footer > span:first-child {
  width: 167px;
  height: 44px;
  background: #ffffff;
  border-radius: 8px;
  font-weight: bold;
  font-size: 14px;
  line-height: 19px;
  margin-right: 8px;
  color: #4169e1;
}
.top .top_info .left .left_footer > span:first-child:hover {
  background: #4169e1;
  border: 2px solid #ffffff;
  box-sizing: border-box;
  color: #fff;
} */
/* .top .top_info .left .left_footer > span:first-child:hover a {
  color: #fff !important;
}
.top .top_info .left .left_footer > span:first-child > a {
  color: #4169e1 !important;
} */
/* .top .top_info .left .left_footer > span:last-child {
  width: 109px;
  height: 44px;
  border-radius: 8px;
  border: 2px solid #ffffff;
  font-weight: bold;
  font-size: 14px;
  color: #ffffff;
  line-height: 19px;
  box-sizing: border-box;
}
.top .top_info .left .left_footer > span:last-child:hover {
  background: #ffffff;
  border: none;
  color: #4169e1;
} */
.words {
  width: 100%;
  background-color: #f3f7ff;
  display: flex;
  justify-content: center;
  position: relative;
}
.words .words_info {
  width: 1322px;
  z-index: 10;
}
/* .words .words_info .experience {
  display: flex;
  justify-content: center;
}
.words .words_info .experience > span {
  width: 215px;
  height: 62px;
  background: #4169e1;
  border-radius: 8px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  line-height: 19px;
  font-weight: bold;
  cursor: pointer;
  box-sizing: border-box;
}
.words .words_info .experience > span:nth-of-type(1) {
  background: #4169e1;
  color: #ffffff;
}
.words .words_info .experience > span:nth-of-type(1):hover {
  background: #fff;
  border: 1px solid #3e444c;
  color: #4169e1;
}
.words .words_info .experience > span:nth-of-type(2):hover {
  background: #4169e1;
  color: #fff;
}
.words .words_info .experience > span:nth-of-type(2) {
  background: #fff;
  border: 1px solid #3e444c;
  color: #3e444c;
  margin-left: 22px;
} */
.words .words_info > p {
  text-align: center;
}
.words .words_info > p:nth-of-type(1) {
  font-weight: bold;
  font-size: 44px;
  color: #3e444c;
  line-height: 59px;
  margin-top: 99px;
}
.words .words_info > p:nth-of-type(2) {
  font-weight: bold;
  font-size: 24px;
  color: #3e444c;
  line-height: 36px;
  margin-top: 70px;
  margin-bottom: 34px;
  text-align: left;
  margin-left: 8px;
}
.words .words_info .word {
  display: flex;
  border-radius: 30px;
  height: 457px;
}
.words .words_info .word img {
  width: 671px;
  height: 457px;
}
.words .words_info .launch {
  text-align: center;
  font-weight: bold;
  font-size: 24px;
  color: #3e444c;
  line-height: 36px;
  margin: 28px 0;
  text-align: left;
  margin-left: 8px;
}
.ppt {
  margin-bottom: 50px;
}
.down {
  width: 100%;
  height: 337px;
  background: url(../image/home/down.webp) no-repeat;
  background-size: 100% 100%;
  text-align: center;
}
.down > p {
  font-weight: 600;
  font-size: 38px;
  color: #ffffff;
  line-height: 53px;
  letter-spacing: 4px;
  height: 53px;
  padding-top: 95px;
  padding-bottom: 38px;
}
.down > div {
  margin: auto;
  width: 250px;
  height: 56px;
  background: #ffffff;
  border-radius: 8px;
  font-weight: bold;
  font-size: 18px;
  color: #000000;
  line-height: 27px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
}
.down > div:hover {
  color: #0f87e8;
}
.footer {
  width: 100%;
  height: 126px;
  background: #f2f2f2;
  display: flex;
  justify-content: center;
}
.footer .footer_info {
  width: 1322px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
a {
  text-decoration: dashed;
  color: #0a1e2c;
}

.footer .footer_info .left span > img {
  width: 14px;
  height: 14px;
  margin-right: 6px;
  vertical-align: middle;
}
.footer .footer_info .left > span {
  font-size: 14px;
  color: #0a1e2c;
  line-height: 19px;
  margin-right: 50px;
  cursor: pointer;
  vertical-align: middle;
}
.footer .footer_info .right {
  display: flex;
  align-items: center;
}
.footer .footer_info .right span {
  font-size: 14px;
  color: #0a1e2c;
  line-height: 19px;
  cursor: pointer;
}

.footer .footer_info .right span:nth-of-type(1) {
  border: 1px solid #0a1e2c;
  border-radius: 50%;
  width: 13px;
  height: 13px;
  display: inline-block;
  line-height: 12px;
  text-align: center;
  margin-right: 6px;
}