/* Box sizing rules */
*,
*::before,
*::after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
a {
  text-decoration: none;
}
/* Prevent font size inflation */
html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
}
/* Remove default margin in favour of better control in authored CSS */
body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin-block-end: 0;
}
/* Remove list styles on ul, ol elements with a list role, which suggests default styling will be removed */
ul[role='list'],
ol[role='list'] {
  list-style: none;
}
/* Set core body defaults */
body {
  min-height: 100vh;
  line-height: 1.5;
  /* 新增字体样式 - 特别注意兼容性 */
  /*font-size: 18px;*/
  color: #333;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}
/* Set shorter line heights on headings and interactive elements */
h1,
h2,
h3,
h4,
button,
input,
label {
  line-height: 1.1;
}
/* Balance text wrapping on headings */
h1,
h2,
h3,
h4 {
  text-wrap: balance;
}
/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
  color: currentColor;
}
/* Make images easier to work with */
img,
picture {
  max-width: 100%;
  display: block;
}
/* Inherit fonts for inputs and buttons */
input,
button,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}
/* Make sure textareas without a rows attribute are not tiny */
textarea:not([rows]) {
  min-height: 10em;
}
/* Anything that has been anchored to should have extra scroll margin */
:target {
  scroll-margin-block: 5ex;
}
li {
  list-style: none;
}
.top_nav {
  z-index: 1;
  position: sticky;
  background-color: #fff;
  top: 0;
  height: 64px;
  width: 100%;
  display: flex;
  align-items: center;
  padding-left: 66px;
}
.top_nav .l {
  width: 174px;
}
.top_nav .l a {
  display: block;
  height: 64px;
  display: flex;
  line-height: 64px;
  align-items: center;
}
.top_nav .l a img {
  width: 50px;
  height: 30px;
  vertical-align: middle;
  margin-right: 5px;
}
.top_nav .l a h1 {
  font-weight: 700px;
  font-size: 20px;
}
.top_nav .l a:nth-last-of-type span {
  display: block;
  text-align: center;
}
.top_nav .m {
  flex: 1;
  width: 138px;
  text-align: center;
  line-height: 64px;
}
.top_nav .m a {
  margin-right: 10px;
  font-size: 20px;
}
.top_nav .m a:hover {
  color: blue;
}
.top_nav .r {
  margin-right: 10px;
  width: 125px;
  height: 50px;
  font-size: 20px;
}
.top_nav .r a {
  line-height: 50px;
  text-align: center;
}
.top_nav .r a:hover {
  background-color: rgba(0, 0, 0, 0.1);
  border: 1px solid #000;
  border-radius: 5px;
}
.banner {
  height: 300px;
  width: 100%;
  display: flex;
  align-items: center;
  margin-bottom: 20px;
  margin-top: -48px;
  position: relative;
  text-align: center;
  background-color: rgba(0, 0, 0, 0.05);
}
.banner::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 300px;
  background-image: url(../img/banner_bgi.jpg);
  z-index: -1;
  opacity: 0.6;
}
.banner .l {
  width: 100%;
  flex: 1;
}
.banner .l h2 {
  font-size: 48px;
  margin-bottom: 30px;
  display: inline-block;
  margin-left: 260px;
}
.banner .l h2 span {
  color: #9333EA;
}
.banner .l p {
  font-size: 20px;
  margin-bottom: 10px;
}
.banner .l .btn {
  width: 744px;
  height: 50px;
  display: flex;
  align-items: center;
}
.banner .l .btn .box1 {
  width: 136px;
  height: 50px;
  display: block;
  text-align: center;
  line-height: 50px;
  margin-right: 20px;
}
.banner .l .btn .box1 a {
  margin-right: 5px;
  font-size: 18px;
  font-weight: 500;
  background-color: #2563EB;
  color: #fff;
  padding: 12px 24px;
  line-height: 100%;
  border-radius: 20px;
}
.banner .l .btn .box2 {
  text-align: center;
  line-height: 50px;
  display: block;
}
.banner .l .btn .box2 a {
  width: 100%;
  height: 100%;
  display: block;
  font-size: 18px;
  font-weight: 500;
  background-color: #fff;
  color: #374151;
  padding: 12px 24px;
  line-height: 100%;
  border-radius: 20px;
}
.banner .box {
  width: 128px;
  height: 72px;
  background-color: #fff;
  /*position: absolute;*/
  display: inline-flex;
  align-items: center;
  text-align: center;
  border-radius: 10px;
  padding: 10px;
  vertical-align: top;
  margin-top: 14px;
}
.banner .box .l {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  line-height: 40px;
  text-align: center;
  font-size: 20px;
}
.banner .box .r {
  display: block;
}
.banner .box .r h5 {
  font-size: 14px;
  text-align-last: left;
}
.banner .box .r p {
  font-size: 12px;
}
.banner .box:nth-child(2) {
  right: 321px;
  top: 80px;
}
.banner .box:nth-child(2) .l {
  color: #2563EB;
  background-color: #DBEAFE;
}
.banner .box:nth-child(3) {
  right: 449px;
  top: 80px;
  margin-right: 20px;
}
.banner .box:nth-child(3) .l {
  background-color: #DCFCE7;
  color: #16A34A;
}
.wrapper {
  height: 1130px;
  margin: 0 auto;
}
/* 公共样式区域 */
.tittle {
  height: 61.74px;
  width: 1128.96px;
  text-align: center;
  margin-bottom: 50px;
}
.tittle h2 {
  margin-bottom: 11.76px;
  color: #111827;
  font-size: 30px;
}
.tittle p {
  color: #485563;
  font-size: 20px;
}
.body {
  width: 1128.96px;
  height: 300px;
}
.body ul {
  height: 100%;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-content: space-between;
}
.body ul li {
  width: 360.15px;
  height: 98.49px;
  padding: 17.64px;
  display: flex;
  justify-content: space-between;
}
.body ul li .l {
  width: 24.99px;
  height: 35.28px;
  line-height: 35.28px;
  background-color: #F3F4F6;
  border-radius: 15px;
  margin-right: 8px;
  text-align: center;
}
.body ul li .l .iconfont {
  font-size: 20px;
}
.body ul li .r h5 {
  font-size: 14.7px;
  margin-bottom: 5.88px;
}
.body ul li .r p {
  font-size: 11.76px;
}
/* 公共样式区域 */
.recommend_trait {
  margin-bottom: 117.6px;
}
.recommend_trait ul li {
  border: 1px solid rgba(0, 0, 0, 0.2);
  transition: box-shadow 0.3s ease;
  border-radius: 8px;
}
.recommend_trait ul li:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}
.recommend_trait ul li:nth-of-type(1) .iconfont {
  color: #3BB2F6;
}
.recommend_trait ul li:nth-of-type(2) .iconfont {
  color: #22C55E;
}
.recommend_trait ul li:nth-of-type(3) .iconfont {
  color: #EAB308;
}
.recommend_trait ul li:nth-of-type(4) .iconfont {
  color: #AB55F7;
}
.recommend_trait ul li:nth-of-type(5) .iconfont {
  color: #EF4444;
}
.recommend_trait ul li:nth-of-type(6) .iconfont {
  color: #6366FE;
}
.recommend_teaching {
  margin-bottom: 117.6px;
}
.recommend_teaching ul li {
  width: 264.6px;
  height: 165px;
  transition: box-shadow 0.3s ease;
  border-radius: 8px;
}
.recommend_teaching ul li .r p {
  font-size: 18px;
}
.recommend_teaching ul li .r h5 {
  font-size: 20px;
}
.recommend_teaching ul li:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}
.recommend_teaching ul li:nth-of-type(1) .iconfont {
  color: #3B82F6;
}
.recommend_teaching ul li:nth-of-type(2) .iconfont {
  color: #22C55E;
}
.recommend_teaching ul li:nth-of-type(3) .iconfont {
  color: #AB55F7;
}
.recommend_teaching ul li:nth-of-type(4) .iconfont {
  color: #F97316;
}
.recommend_teaching ul li:nth-of-type(5) .iconfont {
  color: #6366F1;
}
.recommend_teaching ul li:nth-of-type(6) .iconfont {
  color: #14BBA6;
}
.recommend_teaching ul li:nth-of-type(7) .iconfont {
  color: #10B981;
}
.recommend_teaching ul li:nth-of-type(8) .iconfont {
  color: #EF4444;
}
.recommend_advantages {
  margin-bottom: 40px;
  background-color: rgba(0, 0, 0, 0.02);
  padding: 20px;
}
.recommend_advantages .tittle {
  margin-bottom: 20px;
}
.recommend_advantages .body {
  height: 200px;
}
.recommend_advantages ul li {
  transition: box-shadow 0.3s ease;
  width: 266.805px;
  height: 165px;
  padding-right: 8px;
}
.recommend_advantages ul li .r p {
  font-size: 18px;
}
.recommend_advantages ul li .r h5 {
  font-size: 20px;
}
.recommend_advantages ul li:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}
.recommend_advantages ul li:nth-of-type(1) .iconfont {
  color: #EAB308;
}
.recommend_advantages ul li:nth-of-type(2) .iconfont {
  color: #22C55E;
}
.recommend_advantages ul li:nth-of-type(3) .iconfont {
  color: #3B82F6;
}
.recommend_advantages ul li:nth-of-type(4) .iconfont {
  color: #A855F7;
}
.recommend_source {
  padding-top: 10px;
  margin-bottom: 30px;
  background-color: rgba(0, 0, 0, 0.02);
  height: 600px;
}
.recommend_source .tittle {
  margin-bottom: 30px;
}
.recommend_source .btns {
  width: 280px;
  height: 29.4px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
}
.recommend_source .btns a {
  display: block;
  width: 93px;
  height: 38px;
  padding: 5.88px 11.76px;
  white-space: nowrap;
  font-size: 18px;
  color: #111827;
  text-align: center;
}
.recommend_source .btns a.active {
  border-bottom: 2px solid #10B981;
}
.recommend_source .btns a:hover {
  background-color: rgba(0, 0, 0, 0.1);
}
.recommend_source .btns a:nth-of-type(1):hover {
  border-radius: 5px 0 0 5px;
  border: 1px solid rgba(0, 0, 0, 0.1);
}
.recommend_source .btns a:nth-of-type(2):hover {
  border: 1px solid rgba(0, 0, 0, 0.1);
}
.recommend_source .btns a:nth-of-type(3):hover {
  border-radius: 0 5px 5px 0;
  border: 1px solid rgba(0, 0, 0, 0.1);
}
.recommend_source .body {
  height: 330.75px;
}
.recommend_source ul {
  transition: all 0.3s;
  height: 245.49px;
  display: flex;
  align-content: space-between;
  justify-content: space-between;
  transition: box-shadow 0.3s ease;
  display: none;
}
.recommend_source ul.active {
  display: flex;
}
.recommend_source ul li {
  width: 269.01px;
  height: 139.65px;
  background-color: #fff;
  padding: 17.64px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  display: block;
  text-align: center;
  border-radius: 8px;
  margin-bottom: 39.69px;
}
.recommend_source ul li:hover {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}
.recommend_source ul li:nth-of-type(1) .t {
  background-color: #DBEAFE;
}
.recommend_source ul li:nth-of-type(1) .b {
  background-color: #DBEAFE;
  color: #1E40AF;
}
.recommend_source ul li:nth-of-type(2) .t {
  background-color: #DCFCE7;
}
.recommend_source ul li:nth-of-type(2) .b {
  background-color: DCFCE7;
  color: #166534;
}
.recommend_source ul li:nth-of-type(3) .t {
  background-color: #FEF9C3;
}
.recommend_source ul li:nth-of-type(3) .b {
  background-color: #FEF9C3;
  color: #854D0E;
}
.recommend_source ul li:nth-of-type(4) .t {
  background-color: #F3E8FF;
}
.recommend_source ul li:nth-of-type(4) .b {
  background-color: #F3E8FF;
  color: #6B2EA8;
}
.recommend_source ul li:nth-of-type(5) .t {
  background-color: #FEE2E2;
}
.recommend_source ul li:nth-of-type(5) .b {
  background-color: #FEE2E2;
  color: #991B1B;
}
.recommend_source ul li:nth-of-type(6) .t {
  background-color: #E0E7FF;
}
.recommend_source ul li:nth-of-type(6) .b {
  background-color: #E0E7FF;
  color: #3730E3;
}
.recommend_source ul li:nth-of-type(7) .t {
  background-color: #FCE7F3;
}
.recommend_source ul li:nth-of-type(7) .b {
  background-color: #FCE7F3;
  color: #9D174D;
}
.recommend_source ul li:nth-of-type(8) .t {
  background-color: #FFEDD5;
}
.recommend_source ul li:nth-of-type(8) .b {
  background-color: #FFEDD5;
  color: #9A3412;
}
.recommend_source ul li .t {
  height: 47.04px;
  width: 47.04px;
  display: block;
  margin-bottom: 11.76px;
  text-align: center;
  line-height: 47.04px;
  margin: 0 auto;
}
.recommend_source ul li .t .iconfont {
  font-size: 23.52px;
}
.recommend_source ul li .m {
  margin-top: 10px;
  display: block;
  height: 20.58px;
  margin-bottom: 5.88px;
  font-size: 18px;
}
.recommend_source ul li .b {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 17.64px;
  width: 88.2px;
  padding: 2.94px 5.88px;
  font-size: 12px;
  background-color: #DBEAFE;
  line-height: 17.64px;
  margin: 0 auto;
  border-radius: 12px;
}
.recommend_comment {
  margin-bottom: 40px;
}
.recommend_comment ul li {
  width: 360.15px;
  height: 200px;
  margin-right: 14.7px;
  background-color: #fff;
  border: 1px solid rgba(0, 0, 0, 0.2);
  flex-direction: column;
}
.recommend_comment ul li .t {
  display: flex;
  margin-bottom: 5.88px;
}
.recommend_comment ul li .t img {
  border-radius: 50%;
  width: 40px;
  height: 40px;
}
.recommend_comment ul li .t .l {
  width: 40px;
  height: 40px 0.735px;
  background-color: rgba(0, 0, 0, 0.2);
  border-radius: 50%;
}
.recommend_comment ul li .t .r h5 {
  color: #111827;
  font-size: 20px;
}
.recommend_comment ul li .t .r p {
  color: #6B7280;
  font-size: 18px;
}
.recommend_comment ul li .m {
  height: 11.76px;
  margin-bottom: 11.76px;
  display: flex;
}
.recommend_comment ul li .m .iconfont {
  color: #FACC15;
}
.recommend_comment ul li .b {
  font-size: 18px;
  color: #4B5563;
}
.footer {
  background-color: #111827;
  padding-bottom: 30px;
  height: 259px;
  color: #BBBBBB;
}
.footer ul {
  width: 100%;
  height: 228px;
  width: 1128px;
  margin: 0 auto;
  justify-content: space-between;
  display: flex;
  padding: 20px 0;
  margin-top: 20px;
  margin-bottom: 30px;
}
.footer ul dl dt {
  margin-bottom: 16.905px;
  color: #fff;
  font-size: 16px;
}
.footer ul dl dd {
  color: #9CA3CF;
  font-size: 14px;
  margin-bottom: 11.76px;
}
.footer ul dl dd:hover {
  color: #fff;
}
.footer ul li {
  width: 220.5px;
  height: 173.46px;
  display: block;
}
.footer ul li:nth-of-type(1) {
  display: flex;
  flex-direction: column;
}
.footer ul li:nth-of-type(1) .t {
  width: 150px;
  height: 50px;
  margin-bottom: 8px;
  margin-top: 10px;
}
.footer ul li:nth-of-type(1) .t a {
  width: 100%;
  height: 100%;
  display: block;
  display: flex;
}
.footer ul li:nth-of-type(1) .t a img {
  width: 55px;
  height: 35px;
  margin-right: 5px;
  vertical-align: middle;
}
.footer ul li:nth-of-type(1) .t a h5 {
  font-size: 16px;
  color: #fff;
}
.footer ul li:nth-of-type(1) .m {
  margin-top: 10px;
  margin-bottom: 11.76px;
}
.footer ul li:nth-of-type(1) .m p {
  font-size: 16px;
  color: #9CA3AF;
}
.footer ul li:nth-of-type(1) .b i:nth-of-type(1) {
  margin-right: 4px;
}
.footer ul li:nth-of-type(1) .b .iconfont {
  font-size: 14.7px;
  color: #9CA3AF;
}
.footer ul li:nth-of-type(1) .b .iconfont :hover {
  color: #fff;
}
.footer ul li:nth-of-type(4) {
  margin-right: -106px;
}
.footer ul li:nth-of-type(4) img {
  width: 100px;
  height: 100px;
}
.footer ul li:nth-of-type(4) p {
  margin-top: 20px;
  font-size: 12px;
  color: #9CA3CF;
}
.footer .line {
  width: 1643.46px;
  height: 1px;
  background-color: #fff;
  margin-bottom: 5px;
  margin-top: 15px;
}
.footer .copyRight {
  width: 1128px;
  height: 75px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  color: #9CA3AF;
}
.footer .copyRight .l p {
  font-size: 14px;
  color: #BBBBBB;
}
.footer .copyRight .l p:nth-of-type(1) {
  margin-bottom: 15px;
  margin-top: 15px;
}
.footer .copyRight .r {
  margin-top: 25px;
}
.footer .copyRight .r a {
  margin-right: 15px;
  font-size: 14px;
  color: #888888;
}
.footer .copyRight .r a:hover {
  color: #fff;
}
/* 返回顶部的按钮 */
#back {
  width: 20px;
  height: 45px;
  background-color: rgba(0, 0, 0, 0.1);
  position: absolute;
  top: 50%;
  right: 5%;
  position: fixed;
  display: none;
  text-align: center;
  line-height: 45px;
}
#back .iconfont {
  width: 100%;
  height: 100%;
  text-align: center;
}