* {
  margin: 0;
}

*,
*::after,
*::before {
  box-sizing: border-box;
}

.test {
  height: 100px;
  width: 100px;
  background-color: blue;
  border: 10px solid red;
}

a {
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
}

::selection {
  background-color: #007fdf;
  color: #fff;
}

::-webkit-selection {
  background-color: #007fdf;
  color: #fff;
}

::-moz-selection {
  background-color: #007fdf;
  color: #fff;
}

.header {
  width: 100%;
  height: 420px;
  background: url("/assets/images/training/training_banner.svg");
  position: relative;
  padding-top: 170px;
}

.header_title_wrap {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
}

.header .header-title {
  font-size: 64px;
  color: #ffffff;
  letter-spacing: 0;
  text-align: center;
  /*position: relative;
  top: 170px;*/
  margin: 0 auto;
  margin-bottom: 20px;
}

.header .header-sub-title {
  /*position: relative;
  top: 190px;*/
  font-size: 20px;
  line-height: 30px;
  color: #ffffff;
  letter-spacing: 0;
  text-align: center;
  margin: 0 auto;
}

.header_title_wrap .input {
  width: 500px;
  margin: auto;
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  margin-top: 30px;
  padding-bottom: 10px;
}

.input-container {
  width: 380px;
  margin: auto;
  display: flex;
  justify-content: space-between;
}

.input-container > span {
  margin-right: 6px;
  padding-top: 1px;
}

.header_title_wrap .input span {
  display: inline-block;
  width: 34px;
  height: 34px;
}

.input-container form {
  width: calc(380px - 40px);
  float: right;
  display: inline-block;
}

.header_title_wrap .input input {
  color: #cbedff;
  background-color: rgba(0, 0, 0, 0);
  border: 0;
  width: 84%;
  font-size: 20px;
  line-height: 34px;
  /* text-align: right; */
  width: 100%;
  border: 0;
  outline: 0;
}

/*修改样式表*/

.videos-container {
  width: 1260px;
  margin: 0 auto;
  /*display: flex;*/
  padding-bottom: 40px;
  font-size: 0;
}

.videos-container > font {
  display: block;
  padding-left: 10px;
  color: #1a2736 !important;
  padding-top: 30px;
  padding-bottom: 30px;
  font-size: 14px !important;
}

.videos-container .help_box {
  width: calc(100% - 20px);
  height: auto;
  border: 1px solid #cbedff;
  border-radius: 4px;
  margin: auto;
  margin-top: 40px;
  margin-bottom: 40px;
  padding-left: 30px;
  padding-right: 30px;
}

.videos-container .help_box > div {
  padding-top: 17px;
  padding-bottom: 17px;
}

.videos-container .help_box .tag {
  padding-bottom: 3px;
  position: relative;
}

.videos-container .help_box .category {
  border-bottom: 1px solid #cbedff;
}

.videos-container .help_box .tag > i {
  display: inline-block;
  width: 20px;
  height: 20px;
  vertical-align: top;
  margin-top: 3px;
}

.videos-container .help_box .category .title {
  width: 100px;
}

.videos-container .help_box .tag .title {
  width: 80px;
  vertical-align: top;
  margin-top: 3px;
}

.videos-container .help_box .tag ul {
  vertical-align: middle;
  width: calc(100% - 200px);
}

.videos-container .help_box .tag .button {
  position: absolute;
  top: 20px;
  right: 0;
  cursor: pointer;
}

.videos-container .help_box .tag .button > div span {
  width: 56px;
  height: 20px;
  font-size: 14px;
  font-weight: 400;
  color: rgba(0, 127, 223, 1);
  line-height: 20px;
}

.videos-container .help_box .tag .button i {
  display: inline-block;
  width: 20px;
  height: 20px;
  vertical-align: top;
  /*margin-top: 3px;*/
}

.videos-container .help_box .tag .button .hide {
  display: none;
}

.videos-container .help_box .category .title,
.videos-container .help_box .tag .title {
  display: inline-block;
  height: 20px;
  font-size: 14px;
  font-weight: 400;
  color: rgba(26, 39, 54, 1);
  line-height: 20px;
}

.videos-container .help_box .category ul,
.videos-container .help_box .tag ul {
  margin: 0;
  padding: 0;
  display: inline-block;
}

.videos-container .help_box .category ul li,
.videos-container .help_box .tag ul li {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 2px;
  cursor: pointer;
  margin-right: 10px;
}

.videos-container .help_box .tag ul li {
  margin-bottom: 14px;
}

.videos-container .help_box .tag ul .hide_tag {
  display: none;
}

.videos-container .help_box .category ul li:hover,
.videos-container .help_box .tag ul li:hover {
  background-color: #007fdf;
}

.videos-container .help_box .category ul .active {
  background-color: #007fdf;
}

.videos-container .help_box .category ul .active span {
  color: white;
}

.videos-container .help_box .category ul li:hover span,
.videos-container .help_box .tag ul li:hover span {
  color: white;
}

.videos-container .help_box .category ul li span,
.videos-container .help_box .tag ul li span {
  font-size: 14px;
  font-weight: 400;
  color: rgba(94, 105, 120, 1);
  line-height: 20px;
}

.videos-container .help_box .tag ul .active {
  background-color: #007fdf;
  color: white;
}

.videos-container .help_box .tag ul .active span {
  color: white;
}

/*标签栏收起的状态*/

.videos-container .help_box .tag-up {
  height: 60px;
  overflow-y: hidden;
}

.videos-container .help_box .tag-up ul li {
  margin-bottom: 17px;
}

#productProduce {
  /* margin-top: 0 !important;*/
}

.video-nav {
  font-size: 14px;
  line-height: 20px;
  margin-top: 80px;
  width: 260px;
  display: inline-block;
  vertical-align: top;
  margin-right: 50px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.video-nav .item {
  margin-bottom: 20px;
  color: #1a2736;
  cursor: pointer;
}

.video-nav .item0 a {
  color: inherit;
}

.video-nav .text-hight {
  color: #007fdf;
}

.vedio-list {
  /*margin-top: 80px;*/
  display: inline-block;
  width: 100%;
  vertical-align: top;
  position: relative;
}

.vedio-list .part {
  opacity: 1;
  margin-bottom: 20px;
  transition: all 0.15s ease-in;
}

.videos-container .vedio-list .hide {
  opacity: 0;
  display: none;
}

.videos-container .vedio-list .show {
  /*position: absolute;
  top: 0;*/
}

.vedio-list .vedio-title {
  font-size: 20px;
  color: #1a2736;
  letter-spacing: 0;
  line-height: 30px;
  margin-bottom: 20px;
  position: relative;
  padding-left: 10px;
}

.vedio-list .vedio-title .icon_hot {
  margin-left: 25px;
  position: relative;
  top: 2px;
}

.vedio-zstack-a {
  display: inline-block;
  width: 475px;
  height: 240px;
  margin-bottom: 20px;
  border-radius: 4px;
  margin-right: 20px;
  box-shadow: 0 5px 20px 0 rgba(94, 105, 120, 0.1);
  transition: all 0.25s linear;
  cursor: pointer;
}

.vedio-zstack-a:first-child {
  margin-right: 20px;
}

.part .vedio-block {
  display: flex;
  justify-content: start;
  flex-wrap: wrap;
}

.part .vedio-block .vedio-block-sp {
  width: 100%;
}

.part2 .vedio-block-normal {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.vedio-block .vedio-block-item.hide-block {
  display: none;
}

.part2 .vedio-block-normal .vedio-block-item {
  /*margin-right: 0;*/
}

.vedio-list .vedio-block .vedio-block-item:hover {
  box-shadow: rgba(3, 27, 78, 0.1) 0px 10px 20px 0;
}

.vedio-block .vedio-block-item {
  border-radius: 4px;
  /*margin-right: 20px;*/
  display: inline-block;
  margin-bottom: 20px;
  transition: all 0.25s linear;
  cursor: pointer;
  box-shadow: 0 5px 20px 0 rgba(94, 105, 120, 0.1);
  border: 1px solid rgba(203, 237, 255, 1);
  vertical-align: top;
  width: 400px;
  /*height: 310px;*/
  margin-left: 10px;
  margin-right: 10px;
}

.part1 .vedio-block .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/training_education.png);
}

.part2 .vedio-block .vedio-block-normal .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/training_feature.png);
}

.part3 .vedio-block .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/training_installation.png);
}

.part4 .vedio-block .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/training_video.png);
}

.part5 .vedio-block .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/training_feature.png);
}

.part6 .vedio-block .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/zstack_mini_eval.png);
}

.part7 .vedio-block .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/zstack_mini_intro.png);
}

.part8 .vedio-block .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/zstackmini.svg);
}
.part9 .vedio-block .vedio-block-item a .vedio-item {
  background-image: url(/assets/images/training/training_education.png);
}

.vedio-block .vedio-block-item a {
  border-bottom: 1px solid #e0f3ff;
}

.vedio-block .vedio-block-item .block-tag {
  padding: 12px 0 12px 22px;
}

.vedio-block .vedio-block-item .block-tag ul li {
  display: inline-block;
  margin-right: 14px;
  margin-bottom: 4px;
  padding: 3px 10px;
  border-radius: 2px;
}

.vedio-block .vedio-block-item .block-tag ul li.active {
  background-color: #007fdf;
}

.vedio-block .vedio-block-item .block-tag ul li.active span {
  color: white;
}

/*.vedio-block .vedio-block-item .block-tag ul li:hover{
    background-color: #007FDF;
}
.vedio-block .vedio-block-item .block-tag ul li:hover span{
    color: white;
}*/

.vedio-block .vedio-block-item .block-tag ul li span {
  font-size: 12px;
  font-weight: 400;
  color: rgba(94, 105, 120, 1);
  line-height: 20px;
}

.vedio-block a:last-child {
  margin-right: 0;
}

.vedio-block-item .vedio-item {
  width: 100%;
  height: 230px;
  background-size: 400px 230px;
  position: relative;
}

.vedio-item .sub {
  padding-left: 30px;
  padding-right: 30px;
  line-height: 20px;
}

.vedio-item .sub i {
  vertical-align: top;
  /* padding-top: 5px; */
  display: inline-block;
  padding-top: 3px;
  margin-right: 13px;
}

.vedio-item .sub i img {
  display: block;
}

.vedio-item .title {
  font-size: 14px;
  color: #37475a;
}

.vedio-item .writer {
  font-size: 14px;
  color: #37475a;
}

.vedio-item .tag {
  position: absolute;
  top: 0;
  left: 0;
  display: none;
}

#class {
  margin-top: 0;
}

/*.vedio-item .description {
  font-size: 18px;
  color: #37475A;
  letter-spacing: 0;
  line-height: 30px;
  padding-left: 30px;
  padding-right: 30px;
  padding-top: 30px;
}*/

.vedio-item .title {
  font-size: 18px;
  color: #37475a;
  letter-spacing: 0;
  line-height: 30px;
  padding-left: 30px;
  padding-right: 30px;
  padding-top: 30px;
  font-weight: 500;
  text-overflow: ellipsis;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.vedio-item .description {
  font-size: 14px;
  /* font-weight: 400; */
  color: rgba(55, 71, 90, 1);
  line-height: 22px;
  padding-top: 14px;
  padding-left: 30px;
  padding-right: 30px;
  text-align: justify;
  text-overflow: ellipsis;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.vedio-item .description table {
  border-collapse: unset !important;
  margin: unset !important;
  overflow-x: unset !important;
  color: unset !important;
  font-family: unset !important;
  font-size: unset !important;
  background-color: unset !important;
  width: 100% !important;
}

.vedio-item .description table td {
  border: unset !important;
  padding: unset !important;
  vertical-align: unset !important;
  min-width: unset !important;
}

.vedio-item .description span {
  color: unset !important;
  font-family: unset !important;
  font-size: unset !important;
  background-color: unset !important;
}

.vedio-block .vedio-block-item-zstack {
  width: 400px;
  height: 320px;
}

.vedio-block .vedio-block-item-zstack .vedio-item {
  height: 270px;
  background-size: cover;
  padding-top: 140px;
}

.vedio-block .vedio-block-item-zstack .vedio-item > div {
  color: white;
  text-align: center;
}

.vedio-block .vedio-block-item-zstack .title {
  line-height: 20px;
}

.vedio-block .vedio-block-item-zstack .description {
  line-height: 22px;
  padding-top: 10px;
  padding-left: 80px;
  padding-right: 80px;
}

.vedio-block .vedio-block-item-zstack .block-tag {
  box-sizing: border-box;
  width: fit-content;
  font-size: 0;
  padding-left: 0;
  margin: auto;
}

.vedio-block .vedio-block-item-zstack .block-tag li:nth-of-type(2) {
  margin-right: 0;
}

/*.vedio-zstack-a:hover{
  box-shadow: rgba(3, 27, 78, 0.1) 0px 10px 20px 0;
}
.vedio-block a:hover{
  box-shadow: rgba(3, 27, 78, 0.1) 0px 10px 20px 0;
}
.vedio-description {
  font-size: 20px;
  color: #FFFFFF;
  text-align: center;
  line-height: 20px;
  padding-top: 190px;
}*/

/*@media screen and (max-width: 1408px) {
    .vedio-list {
      width: 830px;
    }
    #videos-container-n{
      width: 1140px;
    }
    .video-nav{
      width: 200px;
    }
}*/

@media screen and (max-width: 1240px) {
  #videos-container-n {
    width: 1000px;
  }
  .video-nav {
    width: 150px;
  }
  .part .vedio-block {
    display: unset;
    justify-content: unset;
    flex-wrap: unset;
  }
  .vedio-block .vedio-block-item {
    margin-right: 20px;
  }
  .part2 .vedio-block-normal {
    display: unset;
    justify-content: unset;
    flex-wrap: unset;
  }
  .part2 .vedio-block-normal .vedio-block-item {
    margin-right: 20px;
  }
}

@media screen and (max-width: 1000px) {
  #videos-container-n {
    width: 100%;
    padding-left: 30px;
    padding-right: 30px;
  }
  .vedio-block .vedio-block-item {
    margin-right: 10px;
  }
  .part2 .vedio-block-normal .vedio-block-item {
    margin-right: 10px;
  }
}

@media screen and (max-width: 768px) {
  .videos-container {
    display: block;
  }
  .header_title_wrap {
    width: auto;
  }
  #videos-container-n {
    width: 100%;
    padding-left: 30px;
    padding-right: 30px;
  }
  .video-nav {
    width: 100px;
    /* margin-right: 40px; */
  }
  .videos-container .help_box {
    width: 100%;
    overflow-x: scroll;
  }
  .videos-container .help_box .category {
    width: 700px;
  }
  .videos-container .help_box .tag {
    width: 700px;
  }
}

@media screen and (max-width: 480px) {
  .header {
    padding-left: 30px;
    padding-right: 30px;
  }
  .header .header-title {
    font-size: 48px;
    line-height: 60px;
    margin-bottom: 20px;
  }
  .header .header-sub-title {
    font-size: 16px;
    line-height: 28px;
  }
  #videos-container-n {
    width: 100%;
  }
  .video-nav {
    position: static;
    display: block;
    width: auto;
    padding-left: 30px;
    margin-bottom: 100px;
    overflow: visible;
    height: auto;
    top: 0;
  }
  .vedio-list {
    display: block;
    width: 100%;
    float: none;
  }
  .vedio-zstack-a {
    width: 100%;
  }
  .vedio-block a {
    width: 100%;
  }
  .vedio-zstack {
    margin-bottom: 20px;
  }
  .vedio-item {
    background-position-y: 90%;
    background-size: 100%;
  }
  .vedio-block .vedio-block-item-zstack {
    width: 100%;
  }
  .vedio-block .vedio-block-item {
    width: 100%;
    background-size: cover;
  }
  .vedio-block-item .vedio-item {
    background-size: 100% 100%;
  }
  .vedio-block .vedio-block-item-zstack .description {
    padding-left: 20px;
    padding-right: 20px;
  }
  .header_title_wrap .input {
    width: 100%;
  }
  .input-container {
    width: 90%;
  }
  .input-container form {
    width: calc(100% - 36px);
  }
  .header_title_wrap .input input {
    font-size: 16px;
  }
}

@media screen and (max-width: 375px) {
  .header_title_wrap .input {
    width: 70%;
    margin-top: 10px;
  }
  .input-container {
    width: 100%;
  }
  .header_title_wrap .input input {
    font-size: 12px;
  }
  .header_title_wrap .title span {
    font-size: 24px;
  }
}

@media screen and (max-width: 370px) {
  .video-nav .item {
    /*width: 15%;
    display: inline-block;*/
  }
  .vedio-zstack {
    width: 100%;
  }
  .vedio-item {
    width: 100%;
  }
  .video-nav {
    top: 40px;
  }
}