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

/* 全局去除a标签下划线和li标签默认样式 */
a {
  color: inherit;
  text-decoration: none;
}

li {
  list-style: none;
}

/* 首页样式 */
/* 版心 */
.wrapper {
  margin: 0 auto;
  width: 1200px;
}
/* 其他样式保持不变... */

body {
  background-color: #f3f5f7;
}
/* 头部区域 */
.header {
  height: 100px;
  background-color: #fff;
}
.header .wrapper {
  display: flex;
  padding-top: 29px;
}
.logo a {
  height: 41px;
  width: 196px;
  display: block;
  background-image: url("image/logo 1.png");
  font-size: 0;
}
/* 导航 */
.nav {
  margin-left: 95px;
}
.nav ul {
  display: flex;
}
.nav li {
  margin-right: 24px;
}
.nav li a {
  text-decoration: none;
  padding: 6px 8px;
  color: #333;
  font-size: 19px;
  display: block;
  line-height: 32px;
}
.nav li a.active,
.nav li a:hover {
  border-bottom: 2px solid #00a4ff;
}
/* 搜索部分 */
.search {
  display: flex;
  width: 412px;
  height: 40px;
  margin-left: 64px;
  border-radius: 20px;
  background-color: #f3f5f7;
  padding-left: 19px;
  padding-right: 12px;
}
.search input {
  flex: 1;
  border: 0;
  background-color: transparent;
  outline: none;
}

.search input::placeholder {
  font-size: 14px;
  color: #999;
}
.search a {
  align-self: center;
  width: 22px;
  height: 22px;
  background-image: url("https://bpic.588ku.com/element_origin_min_pic/19/04/25/9b6446b6f98580fd7ff33998bb4c0096.jpg");
  background-size: cover;
}
/* 用户 */
.user {
  margin-left: 32px;
  margin-top: -4px;
  display: flex;
  align-items: center; /* 垂直居中 */
}
.user a {
  display: flex; /* 使用flex布局 */
  gap: 7px; /* 图片和文字之间的间距 */
}
.user img {
  width: 25px;
  height: 25px;
  border-radius: 50%; /* 将头像变成圆形 */
  object-fit: cover; /* 确保图片比例正常 */
}
.user span {
  font-size: 16px;
  color: #666;
}
/* banner布局 */
.banner {
  height: 420px;
  background-color: #0092cb;
}
.banner .wrapper {
  height: 420px;
  background-image: url("https://img-blog.csdnimg.cn/wm/7b84378fc5fbc7cbdc2645394e90c5e7.jpg?x-oss-process=image/resize,h_236,w_382");
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  justify-content: space-between;
}
.banner .left {
  padding: 3px 20px;
  width: 191px;
  height: 420px;
  background-color: rgba(0, 0, 0, 0.42);
}
.banner .left a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 46px;
  padding: 0 20px;
  font-size: 16px;
  color: #fff;
}
/* 添加右侧白色箭头 */
.banner .left a::after {
  content: ">";
  color: white;
  font-size: 14px;
  opacity: 0.7;
}
.banner .left a:hover,
.banner .left a:hover::after {
  color: #00a4ff;
}
/* 课程表 */
.banner .right {
  margin-top: 60px;
  width: 218px;
  height: 305px;
  background-color: #209dd5;
  border-radius: 10px;
}
.banner h3 {
  margin-left: 14px;
  height: 48px;
  line-height: 48px;
  font-size: 15px;
  color: #fff;
  font-weight: 400;
}
.banner .right .content {
  padding: 14px;
  height: 257px;
  background-color: #fff;
  border-radius: 10px;
}
.banner .right dl {
  border-bottom: #e0e0e0 1px solid;
  margin-bottom: 12px;
}
.banner .right dt {
  font-size: 14px;
  margin-bottom: 8px;
  line-height: 20px;
  font-weight: 700;
}
.banner .right dd {
  font-size: 12px;
  margin-bottom: 8px;
  line-height: 16px;
}
.banner .right dd span {
  color: #00a4ff;
}
.banner .right dd strong {
  color: #7d7d7d;
  font-weight: 400;
}
.banner .right a {
  display: block;
  height: 32px;
  background-color: #00a4ff;
  border-radius: 15px;
  font-size: 14px;
  text-align: center;
  color: #fff;
  line-height: 32px;
}
/* 精品推荐 */
.recommend {
  display: flex;
  margin-top: 11px;
  padding: 0 20px;
  height: 60px;
  line-height: 60px;
  background-color: #fff;
  box-shadow: 0px 1px 2px 0px rgba(211, 211, 211, 0.5);
}
.recommend h3 {
  font-size: 18px;
  color: #00a4ff;
  font-weight: 400;
}
.recommend ul {
  display: flex;
  /* 除去标题和修改兴趣的部分，父级的全部尺寸都给别，实现把修改兴趣挤到最右 */
  flex: 1;
}
.recommend ul li a {
  padding: 0 24px;
  border-right: 1px solid #e0e0e0;
  font-size: 18px;
  color: #333;
}
.recommend ul li:last-child a {
  border-right: 0;
}
.recommend .modify {
  font-size: 16px;
  color: #00a4ff;
}
.course {
  margin-top: 15px;
}
.hd {
  display: flex;
  justify-content: space-between;
  padding: 0 15px;
  height: 60px;
  line-height: 60px;
  font-size: 21px;
  font-weight: 400;
}
.hd .more {
  font-size: 14px;
  color: #999;
}
.bd ul {
  display: flex;
  justify-content: space-between;

  flex-wrap: wrap;
}
.bd li {
  margin-bottom: 14px;
  width: 228px;
  height: 271px;
  background-color: pink;
}
.bd li .pic {
  height: 156px;
}
.bd li .text {
  padding: 20px;
  height: 115px;
  background-color: #fff;
}
.bd li .text h4 {
  margin-bottom: 13px;
  height: 40px;
  font-size: 14px;
  line-height: 20px;
  font-weight: 400;
}
.bd li .text p {
  font-size: 14px;
  line-height: 20px;
  color: #999;
}
.bd li .text span {
  color: #fa6400;
}
.bd li .text p i {
  font-style: normal;
}
/* 前端部分 */
.hd li .active {
  color: #00a4ff;
}
.hd ul {
  display: flex;
}
.hd li {
  margin-right: 60px;
  font-size: 16px;
}
.bd {
  display: flex;
  justify-content: space-between;
}
.bd .right .top {
  height: 100px;
  margin-bottom: 15px;
}
/* 版权 */
.footer {
  margin-top: 60px;
  padding-top: 60px;
  height: 273px;
  background-color: #fff;
}
.footer .wrapper {
  display: flex;
  justify-content: space-between;
}
.footer .left {
  width: 400px;
}
.footer .wrapper p {
  margin-top: 24px;
  margin-bottom: 14px;
  line-height: 17px;
  color: #999;
  font-size: 12px;
}
.footer .left .download {
  display: block;
  height: 36px;
  width: 120px;
  border: #00a4ff 1px solid;
  color: #00a4ff;
  line-height: 34px;
  text-align: center;
  font-size: 16px;
}
.footer .right {
  display: flex;
}
.footer .right dl {
  margin-left: 130px;
}
.footer .right dt {
  margin-bottom: 12px;
  font-size: 16px;
  line-height: 23px;
}
.footer .right a {
  font-size: 14px;
  line-height: 24px;
  color: #666;
}