blockquote, body, button, dd, div, dl, dt, form, h1, h2, h3, h4, h5, h6, input, ul, li, ol, p, pre, td, textarea, th, header, footer, nav, section, aside, article, main, a {
  box-sizing: border-box;
}
:root {
  --primary: rgba(0, 133, 208, 1);
}
.hvr-overline-reveal::before {
  background: var(--primary);
}
body {
  min-width: 1200px;
  margin: auto;
  background-color: rgba(250, 250, 250, 0.6);
  font-family: "思源黑体";
  color: #383838;
  line-height: 1.5;
}
img, video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
input, button, select, textarea {
  outline: none;
  border: none;
  background-color: transparent;
}
.wrap {
  position: relative;
  width: 1200px;
  height: 100%;
  margin: 0 auto;
}
.dash-bm {
  position: relative;
}
.dash-bm::after {
  content: "";
  position: absolute;
  left: 0;
  top: 100%;
  width: 100%;
  border-top: 1px dashed #dbdbdb;
  transform: scaleY(0.5);
}
.dash-bm:last-child::after {
  border: none;
}
.active {
  font-weight: 500;
  color: var(--primary) !important;
}
a {
  color: inherit;
}
a:hover {
  color: var(--primary);
}
.com-tag {
  min-width: 75px;
  height: 30px;
  margin: 0 6px;
  padding: 0 9px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border-radius: 5px;
  font-size: 14px;
  color: #fff;
  background-color: var(--primary);
}
.com-tag:hover {
  color: inherit;
  opacity: 0.9;
}
.plain {
  background-color: rgba(0, 132, 209, 0.1);
  color: var(--primary);
}
.primary-bd {
  background-color: inherit;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.orange-bg {
  background-color: rgba(255, 141, 26, 1);
}
.r-fill {
  border-radius: 999px;
}
.hide-two {
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.flex {
  display: flex;
}
.flex-y-c {
  display: flex;
  align-items: center;
}
.flex-x-c {
  justify-content: center;
}
.flex-x-b {
  justify-content: space-between;
}
.flex-1 {
  flex: 1;
  overflow: hidden;
}
.ml-x {
  margin-left: auto;
}
.t-primary {
  color: var(--primary) !important;
}
.t-white {
  color: #fff !important;
}
.t-gray {
  color: #808080;
}
.t-success {
  color: #43cf7c;
}
.bgc-white {
  background-color: #fff;
}
.bgc-primary {
  background-color: var(--primary);
}
/* 头部 */
.head-t {
  height: 80px;
  margin-bottom: 7px;
}
.logo {
  width: 370px;
  height: 50px;
}
.avatar {
  width: 40px;
  height: 40px;
}
.name {
  font-size: 16px;
  font-weight: 500;
}
.n-dt {
  position: relative;
}
.n-dt-top {
  width: 240px;
  height: 55px;
  line-height: 55px;
  text-align: center;
  background-color: #1b7bb3;
  color: #fff;
  font-size: 15px;
  font-weight: 500;
}
.n-item {
  height: 55px;
  line-height: 55px;
  font-size: 15px;
  padding: 0 40px;
  margin-left: 30px;
}
.n-link {
  position: relative;
  padding: 9px 0;
}
.n-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 90%;
  height: 2px;
  transform-origin: center;
  transform: translateX(-50%) scaleX(0);
  background-color: #fff;
  transition: all 0.2s;
}
.search-bar {
  width: 223px;
  height: 38px;
  border-radius: 5px;
  background-color: rgba(237, 237, 237, 0.39);
}
.search {
  flex: 1;
  padding: 0 12px;
  height: 32px;
}
.search::placeholder {
  font-size: 13px;
  color: #a6a6a6;
}
.search-btn {
  cursor: pointer;
  width: 36px;
  height: 36px;
}
.search-btn i {
  font-size: 18px;
  color: var(--primary);
}
.nav2 {
  background-color: var(--primary);
}
.nav2 .n-item {
  color: #fff;
}
.nav2 .n-link:hover {
  color: rgba(255, 255, 255, 0.8);
}
.nav2 .n-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}
.nav2 .n-link.active {
  color: #fff !important;
}
.nav2 .n-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav2 .search-bar {
  background-color: rgba(255, 255, 255, 0.11);
}
.nav2 .search {
  color: #fff;
}
.nav2 .search::placeholder {
  color: rgba(255, 255, 255, 0.8);
}
.nav2 .search-btn i {
  color: #fff;
}

/* 底部 */
.footer {
  background-color: #172a32;
  color: #fff;
}
.f-item {
  padding: 30px 30px 25px;
  margin-right: 40px;
  font-size: 15px;

}
.f-intro {
  height: 148px;
  font-size: 13px;
  line-height: 2;
}
.f-other {
  height: 30px;
  line-height: 30px;
  text-align: center;
  background-color: #223942;
}
.qr {
  position: absolute;
  right: 80px;
  top: 40px;
}
.qr-code {
  width: 102px;
  height: 102px;
  border: 3px solid #fff;
}
.qr-txt {
  text-align: center;
  font-size: 13px;
  line-height: 2;
}

/* 轮播图 */
.banner {
  min-width: 1200px;
}
.swiper-pagination-bullet {
  width: 17px;
  height: 4px;
  border-radius: 2px;
  background-color: #fff;
}
.b-item-a {
  margin: auto;
  display: block;
  max-width: 1920px;
  height: 500px;
}
.i-banner-item {
  height: 300px;
}

/* 面包屑 */
.main {
  padding-bottom: 50px;
  background-image: linear-gradient(180deg, rgba(245, 247, 249, 0.9) 0%, rgba(245, 247, 249, 0.9) 100%);
}
.bread {
  height: 50px;
  line-height: 50px;
  font-size: 15px;
}

/* 课程推荐 */
.re-h5 {
  font-size: 15px;
  font-weight: 500;
  color: #000;
}
.heart {
  width: 20px;
  height: 20px;
}
.re-item {
  padding: 14px 0;
  border-bottom: 1px dashed rgba(217, 217, 217, 1);
  margin-bottom: 8px;
}
.re-item:last-child {
  border: none;
}
.re-img {
  width: 277px;
  height: 140px;
}
.re-txt {
  margin-top: 12px;
  font-size: 15px;
}