/**
 * base style
 */
/**
 * mixins
 */
/**
 * reset style
 */
/*内外边距通常让各个浏览器样式的表现位置不同*/
body,
div,
ul,
ol,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
form,
fieldset,
legend,
input,
textarea,
p,
th,
td,
hr,
button,
article,
aside,
details,
footer,
header,
menu,
nav,
section {
  margin: 0;
  padding: 0;
}
/*
  去除默认边框
  图片与外围容器贴合
  img缩放处理
*/
img {
  border: 0;
  vertical-align: top;
  width: 100%;
  height: 100%;
}
/*去掉列表前的标识, li 会继承，大部分网站通常用列表来很多内容，所以应该当去*/
ul,
li {
  list-style: none;
}
button,
input,
select,
textarea {
  /*表单元素不继承父级 font 的问题*/
  font-family: inherit;
  font-size: 100%;
  vertical-align: middle;
}
button:focus,
input:focus,
select:focus,
textarea:focus {
  /*去chrome focus默认的高亮边框*/
  outline: none;
}
/**
 * html5  reset style
 */
article,
aside,
details,
figcaption,
figure,
footer,
header,
main,
nav,
section,
summary {
  display: block;
}
/*如同img标签*/
audio,
canvas,
video {
  display: inline-block;
  *display: inline;
  *zoom: 1;
}
audio:not([controls]) {
  /*没有controls属性统一不显示，*/
  display: none;
  /*防止IOS5下多余的高度*/
  height: 0;
}
/*
 重置a元素：
    1. 去掉IE10中已激活链接的灰色背景
    2. 处理chrome与其它浏览器在a:focus时的不同
    3. 提升a:active,a:hover时元素的可读性
    4. 去掉下划线
 */
a {
  background: transparent;
  /*1*/
}
a:focus {
  outline: thin dotted;
  /*2*/
}
a:active,
a:hover {
  outline: 0;
  /*3*/
}
a:link,
a:visited,
ins {
  text-decoration: none;
  /* 4*/
}
/*
    统一盒模型
*/
*,
*:before,
*:after {
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: none;
  /*屏蔽浏览器默认字体大小*/
  -webkit-tap-highlight-color: rgba(255, 255, 255, 0);
  /*去除a标签点击阴影*/
}
html,
body {
  min-height: 100%;
}
html {
  height: 100%;
}
body {
  font-family: "微软雅黑", Arial, Helvetica, sans-serif;
  color: #000000;
  -webkit-backface-visibility: hidden;
  background: #ffffff;
  height: 100%;
}
pre {
  font-family: inherit;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.fl {
  float: left;
}
.fr {
  float: right;
}
.clear:after {
  content: "";
  display: block;
  height: 0;
  clear: both;
}
.hide {
  display: none;
}
.show {
  display: block;
}
.invisible {
  visibility: hidden;
}
.ellipsis-1 {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  word-break: break-word;
}
.ellipsis-2 {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-word;
}
.ellipsis-3 {
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  word-break: break-word;
}
a {
  color: inherit;
  cursor: pointer;
}
video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
@media screen and (max-width: 750px) {
  html {
    font-size: 80px;
  }
}
@media screen and (max-width: 640px) {
  html {
    font-size: 64px;
  }
}
@media screen and (max-width: 430px) {
  html {
    font-size: 46px;
  }
}
@media screen and (max-width: 414px) {
  html {
    font-size: 44px;
  }
}
@media screen and (max-width: 393px) {
  html {
    font-size: 41.92px;
  }
}
@media screen and (max-width: 384px) {
  html {
    font-size: 40.96px;
  }
}
@media screen and (max-width: 375px) {
  html {
    font-size: 40px;
  }
}
@media screen and (max-width: 360px) {
  html {
    font-size: 38.4px;
  }
}
@media screen and (max-width: 320px) {
  html {
    font-size: 34px;
  }
}
.separator {
  height: 0.05rem;
  background: #efefef;
}
header {
  width: 100%;
  height: 2.33rem;
  position: fixed;
  top: 0;
  background: #fff;
  z-index: 1;
}
header .header-title {
  height: 1.13rem;
  padding: 0.28rem 0.2rem 0.25rem;
  overflow: hidden;
}
header .header-title .close-btn {
  width: 0.6rem;
  height: 0.6rem;
  float: left;
  background: url("./../../../../js_css/images/close.png") no-repeat center;
  cursor: pointer;
}
header .header-title .title {
  float: left;
  margin-left: 0.2rem;
  font-size: 0.45rem;
  font-weight: bold;
  color: rgba(0, 0, 0, 0.9);
}
header .header-download {
  padding: 0.15rem 0.4rem;
  overflow: hidden;
}
header .header-download .logo {
  float: left;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 0.1rem;
  border: 0.01rem solid #e3e3e3;
}
header .header-download .title {
  margin-left: 0.2rem;
  line-height: 0.9rem;
  float: left;
  font-size: 0.43rem;
  font-weight: 400;
  color: rgba(0, 0, 0, 0.9);
}
header .header-download .download-btn {
  float: right;
  padding: 0.08rem 0.25rem;
  height: 0.7rem;
  line-height: 0.53rem;
  text-align: center;
  background: #0c89d6;
  border-radius: 0.1rem;
  font-size: 0.35rem;
  color: #ffffff;
  cursor: pointer;
}
.cover {
  width: 100%;
  height: 10.28rem;
  background: #fff;
  z-index: 1;
}
.cover .cover-top {
  position: absolute;
  top: 0;
  left: 0;
  padding: 0.25rem 0.2rem;
  overflow: hidden;
}
.cover .cover-top .back-btn {
  margin-top: 0.1rem;
  width: 0.6rem;
  height: 0.6rem;
  cursor: pointer;
  background: url("./../../../../js_css/images/back.png") no-repeat center;
}
.cover .cover-top .cover-title {
  float: left;
  margin-left: 0.2rem;
  font-size: 0.45rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 400;
}

/* 标题在视频下方的样式 s */
.cover .bottom-box {
  padding: 0.4rem;
}
.cover .bottom-box .bottom-title {
  font-size: 0.43rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.comment {
  padding: 0 0.4rem 0.3rem;
}
.comment .comment-tag {
  margin-bottom: 0.4rem;
  font-size: 0.45rem;
  color: rgba(0, 0, 0, 0.9);
  font-weight: bold;
}
.comment .parent-comment li {
  margin-bottom: 0.73rem;
  overflow: hidden;
}
.comment .parent-comment li .user-avatar {
  float: left;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 50%;
}
.comment .parent-comment li .user-avatar img {
  height: 100%;
  border-radius: 50%;
}
.comment .parent-comment li .comment-detail {
  float: left;
  width: calc(100% - 1.2rem);
  margin-left: 0.3rem;
}
.comment .parent-comment li .comment-detail .comment-about {
  overflow: hidden;
}
.comment .parent-comment li .comment-detail .comment-about .user-name {
  float: left;
  font-size: 0.38rem;
  color: rgba(0, 0, 0, 0.6);
}
.comment .parent-comment li .comment-detail .comment-about .likes {
  float: right;
  display: flex;
  justify-content: space-between;
}
.comment .parent-comment li .comment-detail .comment-about .likes span {
  font-size: 0.33rem;
  color: rgba(0, 0, 0, 0.9);
  margin-right: 0.1rem;
}
.comment .parent-comment li .comment-detail .comment-content {
  width: calc(100% - 0.4rem);
  margin-top: 0.2rem;
  margin-bottom: 0.33rem;
  line-height: 0.7rem;
  font-size: 0.4rem;
  color: rgba(0, 0, 0, 0.9);
}
.comment .parent-comment li .comment-detail .comment-content .toggle-btn {
  float: right;
  font-size: 0.4rem;
  color: #0c89d6;
  cursor: pointer;
}
.comment .parent-comment li .comment-detail .comment-reply {
  overflow: hidden;
}
.comment .parent-comment li .comment-detail .comment-reply .timestamp {
  float: left;
  font-size: 0.28rem;
  color: rgba(0, 0, 0, 0.4);
}
.comment .parent-comment li .comment-detail .comment-reply .reply-btn {
  float: left;
  padding: 0.03rem 0.2rem;
  margin-left: 0.1rem;
  background: #eeeeee;
  border-radius: 0.2rem;
  font-size: 0.28rem;
  text-align: center;
}
.comment .parent-comment li .comment-detail .child-comment {
  float: right;
  width: calc(100% - 0.08rem);
  margin-top: 0.33rem;
  padding: 0.3rem;
  background: #f8f8f8;
  border-radius: 0.1rem;
  line-height: 0.7rem;
  font-size: 0.35rem;
  color: rgba(0, 0, 0, 0.9);
}
.comment .parent-comment li .comment-detail .child-comment .user-name {
  color: rgba(0, 0, 0, 0.6);
}
.video-detail {
  position: absolute;
  left: 0.4rem;
  right: 0.4rem;
  bottom: 2rem;
}
.video-detail .info {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
}
.video-detail .info p {
  font-size: 0.38rem;
  color: #ffffff;
  line-height: 0.98rem;
}
.video-detail .info pre {
  font-size: 0.38rem;
  color: #ffffff;
  line-height: 0.88rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}
.video-detail .info .video-author {
  margin-top: 0.35rem;
  font-size: 0.3rem;
}
.video-detail .operation {
  position: absolute;
  right: 0;
  bottom: 0.45rem;
}
.video-detail .operation .operation-item {
  display: flex;
  flex-direction: column;
  margin-bottom: 0.3rem;
  align-items: center;
  cursor: pointer;
}
.video-detail .operation .operation-item img {
  width: 1rem;
  height: 0.8rem;
}
.video-detail .operation .operation-item .item-title {
  font-size: 0.3rem;
  color: #ffffff;
  text-align: center;
}
.tabs .tabs-header {
  display: flex;
  justify-content: space-around;
  border-bottom: 0.01rem solid #e7e7e7;
  font-size: 0.4rem;
}
.tabs .tabs-header .tabs-title {
  position: relative;
  padding: 0.35rem 0;
  color: rgba(0, 0, 0, 0.9);
  cursor: pointer;
}
.tabs .tabs-header .tabs-title_active {
  font-weight: bold;
  color: #0c89d6;
}
.tabs .tabs-header .tabs-title_active:after {
  content: "";
  position: absolute;
  left: calc((100% - 0.35rem) / 2);
  bottom: 0;
  height: 0.05rem;
  width: 30%;
  background-color: #0c89d6;
}
.topic-list {
  margin-top: 0.2rem;
}
.topic-list .item-box {
  display: flex;
  padding: 0.4rem 0;
  border-bottom: 0.05rem solid #efefef;
}
.topic-list .item-box .item-left {
  flex: 1;
}
.topic-list .item-box .item-left .item-title {
  font-size: 0.425rem;
  font-weight: 400;
  color: rgba(0, 0, 0, 0.9);
  display: block;
}
.topic-list .item-box .item-left .item-time {
  height: 0.375rem;
  font-size: 0.275rem;
  font-weight: 400;
  color: rgba(0, 0, 0, 0.4);
  line-height: 0.375rem;
}
.topic-list .item-box .item-left .item-pageviews {
  height: 0.375rem;
  font-size: 0.275rem;
  font-weight: 400;
  color: rgba(0, 0, 0, 0.4);
}
.topic-list .item-box .cover-video {
  position: relative;
}
.topic-list .item-box .cover-video .bg-video {
  padding: 0 0.1rem;
  position: absolute;
  right: 0.1rem;
  bottom: 0.3rem;
  background: #000000;
  border-radius: 2px;
  opacity: 0.39;
  display: flex;
  align-items: center;
}
.topic-list .item-box .cover-video .bg-video .play-icon {
  width: 0.4rem;
  height: 0.4rem;
  margin-right: 0.1rem;
}
.topic-list .item-box .cover-video .bg-video .video-time {
  font-size: 0.275rem;
  font-weight: 400;
  color: #ffffff;
}
.topic-list .item-box .item-img {
  width: calc((100vw - 0.8rem) * 0.333);
  height: calc((100vw - 0.8rem) * 0.333 * 0.667);
  border-radius: 0.1rem;
  margin-left: 0.3rem;
}
/** header固定了一个app下载框之后的元素padding */
.fixed-header {
  padding-top: 2.33rem;
}
main {
  position: relative;
  height: 100%;
  background: #000;
}
main .horizontal {
  object-fit: contain;
}
main .vertical {
  object-fit: cover;
}