:root {
  --rightint-video-list-text-size: 17px;
  --rightint-video-list-nav-size: 16px;
  --rightint-video-list-menu-w: 335px;
  --rightint-video-list-p: 50px 15px 50px;
  --rightint-video-list-breadcb-p: 30px 0;
  --rightint-video-list-title-ld: 54px;
}

.main {
  padding-top: 50px;
  padding-bottom: 60px;
}

.prolist-box {
  padding: 70px 0;
}

.prolist-box h2 {
  font-size: 48px;
  color: #000;
  line-height: 1;
  font-weight: 700;
  text-align: center;
}

.prolist-nav {
  margin-top: 45px;
  /* display: -webkit-flex; */
  /* display: flex; */
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-flex-wrap: wrap;
  flex-wrap: wrap;
}

.prolist-nav li {
  font-size: 24px;
  color: #7c7c7c;
  font-weight: 300;
}

.prolist-nav li+li {
  /* margin-left: 90px; */
}

.prolist-nav li a {
  color: #7c7c7c;
}

.prolist-nav li.active a {
  color: var(--color-primary);
}

.videolist {
  margin-top: 20px;
  flex: 1;
  padding-left: 35px;
}
.videolist .cl {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.videolist .clear {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: 2%;
}

.videolist ul li {
  width: 32%;
  margin-bottom: 24px;
  /* margin-right: 2%; */
}

.videolist ul li .v {
  position: relative;
  width: 100%;
  display: block;
  overflow: hidden;
}

.videolist ul li .v img {
  width: 100%;
  display: block;
  transition: all 0.3s ease 0s;
  -webkit-transition: all 0.3s ease 0s;
}

.videolist ul li .v .play {
  position: absolute;
  left: calc(50% - 25px);
  top: calc(50% - 25px);
  width: 50px;
  height: 50px;
  display: block;
}

.videolist ul li .t {
  padding: 15px 10px;
  background: #f3f4f7;
  box-sizing: border-box;
  position: relative;
  min-height: 82px;
}

.videolist ul li .t h5 {
  font-size: 17px;
  color: #333;
  text-align: center;
  display: -webkit-box;
  overflow: hidden;
  white-space: normal !important;
  text-overflow: ellipsis;
  word-wrap: break-word;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.videolist ul li:hover .v::after {
  background-color: rgba(0, 0, 0, 0.5);
}

.videolist ul li:hover img {
  transform: scale(1.05);
  -webkit-transform: scale(1.05);
}
.video-wrap{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.rightint-video-list .main-left {
  width: var(--rightint-video-list-menu-w);
  flex-shrink: 0;
}

.rightint-video-list .main-left .sidemenu > h2 {
  border-bottom: 1px solid #efefef;
  height: var(--rightint-video-list-title-ld);
  line-height: var(--rightint-video-list-title-ld);
  position: relative;
  font-size: var(--rightint-video-list-text-size);
  font-weight: 400;
  text-transform: uppercase;
  font-family: var(--font-family);
  text-align: left;
}

.rightint-video-list .main-left .sidemenu > h2::after {
  display: none;
  font-family: "qico";
  content: "\e727";
  position: absolute;
  right: 12px;
  top: 5px;
  width: 40px;
  height: 40px;
  line-height: 40px;
  font-size: 20px;
  text-align: center;
  -webkit-transition: -webkit-transform 0.3s ease;
  transition: -webkit-transform 0.3s ease;
  transition: transform 0.3s ease;
  transition: transform 0.3s ease, -webkit-transform 0.3s ease
}

.rightint-video-list .main-left .sidemenu > h2.active::after {
  -webkit-transform: rotate(45deg) scale(1.08);
  -ms-transform: rotate(45deg) scale(1.08);
  transform: rotate(45deg) scale(1.08)
}

.rightint-video-list .sidemenu {
  /* margin: 0 0 18px; */
}

.rightint-video-list .sidemenu ul {
  display: block;
}

.rightint-video-list .sidemenu > h2.active {
  font-weight: 700;
  color: var(--color-primary);
}

.rightint-video-list .sidemenu > ul > li {
  border-bottom: 1px solid #efefef
}

.rightint-video-list .sidemenu > ul > li h2 {
  line-height: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--rightint-video-list-title-ld);
  color: var(--title-text-color);
  font-size: var(--rightint-video-list-text-size);
  cursor: pointer;
  font-weight: 400;
  font-family: var(--font-family);
  text-align: left;
}

.rightint-video-list .sidemenu > ul > li h2 a {
  text-transform: capitalize
}

.rightint-video-list .sidemenu > ul > li h2 a:hover {
  color: var(--color-primary);
  font-weight: 700;
}

.rightint-video-list .sidemenu > ul > li h2 span {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rightint-video-list .sidemenu > ul > li h3 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--title-text-color);
  font-size: var(--rightint-video-list-text-size);
  cursor: pointer;
  font-weight: 400;
  font-family: var(--font-family);
}

.rightint-video-list .sidemenu > ul > li ul {
  display: none;
  padding: 17px 0 17px 15px;
  border-top: 1px solid #efefef;
}

.rightint-video-list .sidemenu > ul > li ul li a {
  display: block;
  font-size: 16px;
  line-height: 20px;
  text-transform: capitalize
}

.rightint-video-list .sidemenu > ul > li ul li:not(:first-child) {
  margin-top: 17px;
}

.rightint-video-list .sidemenu > ul > li.active h2 a {
  color: var(--color-primary);
  font-weight: 700;
}

@media screen and (max-width: 1441px) {
  .prolist-box h2 {
    font-size: 44px;
  }

  .prolist-nav li {
    font-size: 22px;
  }


}

@media screen and (max-width: 1367px) {
  .prolist-box h2 {
    font-size: 40px;
  }
}

@media screen and (max-width: 1281px) {
  .prolist-box h2 {
    font-size: 36px;
  }
}

@media screen and (max-width: 992px) {
  .prolist-box h2 {
    font-size: 32px;
  }
 
}

@media screen and (max-width: 768px) {
  .main {
    padding-top: 25px;
    padding-bottom: 30px;
  }

  .prolist-box h2 {
    font-size: 28px;
  }

  .prolist-box {
    padding: 30px 0;
  }

  .prolist-nav {
    margin-top: 25px;
  }

  .prolist-nav li {
    font-size: 18px;
  }



  .main {
    padding-top: 25px;
    padding-bottom: 30px;
  }

  .videolist ul li {
    float: left;
    width: 48%;
    margin: 0 0 25px 2%;
  }
}

@media screen and (max-width: 576px) {
  .prolist-box h2 {
    font-size: 24px;
  }

  .videolist ul li {
    float: left;
    width: 48%;
    margin: 0 0 25px 2%;
  }

  .videolist ul li .v::after {
    transform: scale(0.5);
    background-color: rgb(0, 0, 0, 0);
  }
}

@media screen and (max-width: 480px) {
  .prolist-box h2 {
    font-size: 22px;
  }

  .videolist ul li {
    float: left;
    width: 48%;
    margin: 0 0 25px 2%;
  }

  .videolist ul li .v::after {
    transform: scale(0.5);
    background-color: rgb(0, 0, 0, 0);
  }
}

@media screen and (max-width: 400px) {
  .videolist ul {
    margin: 0;
  }

  .videolist ul li {
    float: none;
    width: 100%;
    margin: 0 0 15px;
  }

  .videolist ul li .v::after {
    transform: scale(0.5);
    background-color: rgb(0, 0, 0, 0);
  }
}


/* add */

@media screen and (max-width: 1500px) {
  :root {
    --rightint-video-list-menu-w: 300px;
    --rightint-video-list-text-size: 16px;
    --rightint-video-list-nav-size: 15px;
  }
}

@media screen and (max-width: 1280px) {
  :root {
    --rightint-video-list-menu-w: 260px;
    --rightint-video-list-text-size: 15px;
    --rightint-video-list-nav-size: 14px;
  }

  .rightint-video-list .prolist ul li {
    padding: 0 12px;
  }
}

@media screen and (max-width: 1200px) {
  :root {
    --rightint-video-list-menu-w: 220px;
  }

  .rightint-video-list .prolist ul li {
    padding: 0 10px;
  }
}

@media screen and (max-width: 992px) {
  :root {
    --rightint-video-list-menu-w: 200px;
    --rightint-video-list-breadcb-p: 20px 0;
    --rightint-video-list-title-ld: 50px;
  }

  .rightint-video-list .prolist ul li {
    flex-basis: 50%;
    width: 50%;
    padding: 0 15px;
  }
}

@media screen and (max-width: 992px) {
  :root {
    --rightint-video-list-menu-w: 100%;
    --rightint-video-list-breadcb-p: 20px 0;
    --rightint-video-list-title-ld: 45px;
  }

  .rightint-video-list .main-right {
    padding-left: 0;
    padding-top: 20px;
  }

  .rightint-video-list .main-left .sidemenu > h2 {
    height: var(--rightint-video-list-title-ld);
    line-height: var(--rightint-video-list-title-ld);
    font-size: 15px;
  }

  .rightint-video-list .main-left .sidemenu > h2::after {
    display: block
  }

  .rightint-video-list .sidemenu ul {
    display: none
  }

  .rightint-video-list .sidemenu > ul > li h2 a {
    padding: 10px 50px 10px 0
  }

  .rightint-video-list .sidemenu > ul > li h2 {
    font-size: 15px
  }

  .rightint-video-list .prolist ul li {
    width: 50%;
    flex-basis: 50%;
  }
}

@media screen and (max-width: 576px) {
  :root {
    --rightint-video-list-breadcb-p: 15px;
  }

  .rightint-video-list .sidemenu {
    margin: 0;
  }

  .rightint-video-list .prolist ul {
    margin: 0
  }

  .rightint-video-list .prolist ul li {
    float: none;
    width: 100%;
    margin: 0 0 15px
  }

  .rightint-video-list .prolist ul li h6 {
    padding: 0;
    height: auto
  }
}

/* 一级菜单高亮 */
.rightint-video-list .sidemenu > ul > li.active > h2 > a,
.rightint-video-list .sidemenu > ul > li > h2 > a:hover {
  color: var(--color-primary);
  font-weight: 700;
}

/* 二级菜单高亮 */
.rightint-video-list .sidemenu > ul > li > ul > li.active > h3 > a,
.rightint-video-list .sidemenu > ul > li > ul > li > h3 > a:hover {
  color: var(--color-primary);
  font-weight: 700;
}

/* 三级及以下菜单高亮 */
.rightint-video-list .sidemenu ul li.active > a,
.rightint-video-list .sidemenu ul li > a:hover {
  color: var(--color-primary);
  font-weight: 700;
}