/* 公共样式 */
#app {
    background-color: #fff;
    box-sizing: border-box;
    min-height: calc(100vh - 60px);
}

/* 竖分割线 */
.shu {
    width: 1px;
    height: 15px;
    background-color: #ccc;
    margin: 0 15px;
    display: inline-block;
}

.margin-b10 {
    margin-bottom: 10px;
}

.margin-b40 {
    margin-bottom: 40px;
}

.margin-t10 {
    margin-top: 10px;
}

.margin-t20 {
    margin-top: 20px;
}

.margin-t30 {
    margin-top: 30px;
}

.line-1 {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.line-2 {
    text-overflow: -o-ellipsis-lastline;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
}

.line-4 {
    text-overflow: -o-ellipsis-lastline;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    line-clamp: 4;
    -webkit-box-orient: vertical;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 公共样式结束 */

/* 主盒子 */
.paper-content {
    display: flex;
    justify-content: space-between;
}

/* 左侧盒子 */
.content-left {
    width: calc(100% - 260px - 21px);
    display: flex;
    flex-direction: column;
}

/* 右侧盒子 */
.content-right {
    width: 260px;
    margin-left: 21px;
}

/* 标题栏 */
.paper-header {}

.paper-header .paper-title {
    font-family: OPPOSansBold;
    font-size: 22px;
    color: #333333;
    line-height: 28px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
}

.paper-header .paper-desc {
    font-size: 18px;
    font-family: OPPOSansBold;
    text-align: LEFT;
    color: #333333;
    line-height: 24px;
    word-wrap: break-word;
}

.paper-header .paper-con-data {
    text-align: LEFT;
    display: flex;
    align-items: center;
}

.paper-header .paper-con-data .u-avatar {
    width: 16px;
    height: 16px;
    background: #d9d9d9;
    border-radius: 50%;
    margin-right: 6px;
    line-height: 24px;
}

.paper-header .paper-con-data span {
    font-size: 14px;
    font-family: opposans;
    color: #8a8a8a;
    line-height: 24px;

}

.paper-header .paper-con-data i {
    font-size: 20px;
    margin-right: 5px;
    color: #8a8a8a;
}

/* iframe开始 */
/* iframe的按钮栏 */
.iframe-btn-box {
    height: 44px;
    background-color: #f2f4f7;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    margin-bottom: 2px;

}

.iframe-btn-box .iframe-btn-left {
    display: flex;
}

.iframe-btn-box .iframe-btn-left .iframe-btn {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-right: 30px;
    color: #333333;
}

.iframe-btn i {
    color: #333333;
    font-size: 24px;
}

.iframe-btn span {
    font-size: 14px;
    color: #333333
}

#FxBtn {
    margin-right: 30px;
}

#FxBtn i {
    vertical-align: middle;
    font-size: 24px;
    line-height: 22px;
    color: #333333
}

#FxBtn span {
    vertical-align: middle;
    font-size: 14px;
    line-height: 22px;
    margin-left: 3px;
    color: #333333
}

#FxBtn #fxfunc {
    transform: translateX(0%) !important;
}


.iframe-btn-box i {
    font-size: 24px;
    line-height: 22px;

}

.iframe-btn-box .iframe-btn-left span {
    font-size: 14px;
    line-height: 22px;
    margin-left: 7px;
}

.iframe-btn-box .iframe-btn-right {
    display: flex;
    color: #333333;
}

.iframe-btn-box .iframe-btn-right span {
    display: flex;
    align-items: center;
    cursor: pointer;

}

.iframe-btn-box .iframe-btn-right .previous-chapter {
    display: flex;
    cursor: pointer;
}

.iframe-btn-box .iframe-btn-right .next-chapter {
    display: flex;
    margin-left: 30px;
    cursor: pointer;
}

.iframe-btn-box .iframe-btn-right .next-chapter i {
    font-size: 18px;
    margin-left: 8px;

}

.iframe-btn-box .iframe-btn-right .previous-chapter i {
    font-size: 18px;
    margin-right: 8px;
}

.iframe-btn-box .iframe-btn-right .previous-chapter:hover i,
.iframe-btn-box .iframe-btn-right .next-chapter:hover i,
.iframe-btn-box .iframe-btn-right .next-chapter:hover span,
.iframe-btn-box .iframe-btn-right .previous-chapter:hover span,
.iframe-btn-box .iframe-btn-left .iframe-btn:hover span,
.iframe-btn-box .iframe-btn-left .iframe-btn:hover i,
#FxBtn:hover span,
#FxBtn:hover i {
    color: #2250C4;
}

#paper-video {
    width: 100%;
    padding: 20px;
    background: #f2f4f7;
    box-sizing: border-box;
    border: 1px #f2f4f7 solid;
    position: relative;
    overflow: hidden;
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-play-mask {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background: rgba(98, 98, 98, 0.30);
    z-index: 4;
    backdrop-filter: blur(2px);

}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 88px;
    height: 88px;
    transform: translate(-50%, -50%);
    cursor: pointer;
}

#paper-video .vi_play {
    width: 100%;
}

.video-preview {
    position: relative;
    width: 100%;
    background: linear-gradient(to top, rgb(107, 179, 231), rgb(16, 66, 165));
    cursor: pointer;
}

.video-preview .backimg {
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1;
}

.video-preview-title {
    width: 588px;
    height: 144px;
    font-size: 44px;
    font-family: 'OPPOSansBold';
    text-align: LEFT;
    color: #032361;
    line-height: 66px;
    position: absolute;
    z-index: 2;
    top: 87px;
    left: 50%;
    transform: translateX(-50%);
}

.video-preview-heng {
    position: absolute;
    display: block;
    width: 80px;
    height: 8px;
    background: #032361;
    left: 141px;
    top: 249px;
    z-index: 2;
}

.video-preview-time {
    font-size: 32px;
    font-family: 'OPPOSansBold';
    text-align: LEFT;
    color: #101010;
    line-height: 42px;
    left: 139px;
    bottom: 95px;
    z-index: 2;
    position: absolute;
}

.video-preview-status {
    padding: unset;
    right: 151px;
    bottom: 96px;
    width: 176px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    background: #f0f0f0;
    border-radius: 4px;
    font-size: 28px;
    color: #909090;
    position: absolute;
    overflow: hidden;
    z-index: 2;
}

.video-preview-status-ok {
    background: #15ad31;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    width: 176px;
    height: 60px;
    font-size: 28px;
    padding: unset;
    position: absolute;
    overflow: hidden;
    z-index: 2;
    right: 139px;
    bottom: 96px;
}

.video-preview-status-ok span {
    margin-left: 10px;
}

.lock-layer {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: rgba(16, 16, 16, 0.60);
    display: flex;
    justify-content: center;
    align-items: center;
}

.lock-layer img {
    width: 24px;
    height: 32px;
}

.video-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    /* backdrop-filter: blur(4px); */
    z-index: 5;


    background: rgba(16, 16, 16, .56);
    transition: all .3s linear;
}

.video-mask .video-buy-btn {
    width: 116px;
    height: 44px;
    background: #2250c4;
    border-radius: 38px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

.video-mask .video-buy-btn span {
    font-size: 18px;
    font-family: OPPOSansBold;
    color: #ffffff;
    line-height: 24px;
}

.video-teacher-remark h2 {
    font-size: 24px;
    font-family: OPPOSansBold;
    color: #333333;
    line-height: 32px;
}

.video-remark-desc {
    font-size: 18px;
    font-family: OPPOSans;
    color: #8a8a8a;
    line-height: 28px;
    letter-spacing: -0.02px;
}

/* iframe展示页面一栏 */
/* 腾讯文档pdf展示 */

#iframe-window {
    height: 100%;
    box-sizing: border-box;
    border: 1px #f2f4f7 solid;
    position: relative;
    overflow: hidden;
}

/* 未购买预览pdf */
.preview-pdf-box {
    background-color: #f2f4f7;
    height: 100%;
    width: 100%;
    box-sizing: border-box;
    padding: 0 0 0 0;
    display: flex;
    justify-content: space-between;
    position: relative;
}

/* 已购买-在线预览遮罩层 */
.preview-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(98, 98, 98, 0.30);
    z-index: 3;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(2px);
}

.preview-mask-btn {
    width: 160px;
    height: 48px;
    background: #2250c4;
    border-radius: 63px;
    color: #fff;
    font-size: 18px;
    text-align: center;
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

/* 未购买-左侧内容 */
.preview-pdf-box .preview-pdf-left {
    width: 30%;
    margin-right: 2%;
}

.preview-pdf-left .preview-pdf-left-header {
    margin-top: 12px;
    width: 100%;
    height: 27px;
    border-bottom: 1px solid #cccccc;
    padding-left: 15%;
    box-sizing: border-box;
}

.preview-pdf-left .preview-nav-item {
    padding: 2px;
    display: inline-block;
    height: 26px;
    border-bottom: 2px solid #ca3834;
    box-sizing: border-box;
    color: #CA3834;
    font-size: 12px;
    font-family: OPPOSans;
}

.preview-pdf-left .thumbnail-container {
    padding: 5px 0 12px;
    width: 100%;
    height: calc(100% - 50px);
}

.preview-pdf-left .preview-pdf-left-content {
    width: 100%;
    padding: 0 10%;
    box-sizing: border-box;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
}

.preview-pdf-left .preview-pdf-img {
    margin: 12px 0;
    width: 100%;
    padding: 2px;
}


.preview-pdf-left .preview-pdf-img img {
    width: 100%;
}

.preview-pdf-left .preview-pdf-img:hover {
    border: 1px solid #ca3834;
    padding: 1px;
}

.preview-pdf-left .preview-pdf-img-active {
    padding: 0 !important;
    border: 2px solid #ca3834 !important;
}

.preview-pdf-left-content::-webkit-scrollbar {
    width: 0;
    height: 0;
}

.preview-pdf-left-content::-webkit-scrollbar-thumb {
    min-height: 40px;
    border: 4px solid transparent;
    border-radius: 8px;
    background-clip: content-box !important;
    background: #c0c6cf;
}

/* 未购买-右侧内容 */
.preview-pdf-right {
    position: relative;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding: 12px 0;
}

.pdf-page-wrapper {
    width: 100%;
    height: 100%;

    overflow-x: hidden;
    overflow-y: auto;
}

.pdf-page {
    width: 100%;
    height: auto;
    margin-bottom: 20px;
}

.pdf-page img {
    width: 100%;
    height: auto;
}

.pdf-page-wrapper::-webkit-scrollbar {
    width: 14px;
    height: 14px;
}

.pdf-page-wrapper::-webkit-scrollbar-thumb {
    min-height: 40px;
    border: 4px solid transparent;
    border-radius: 8px;
    background-clip: content-box !important;
    background: #c0c6cf;
}

/* 提示 */
.buy-toast-box {
    width: 200px;
    position: absolute;
    bottom: 0px;
    left: 0;
    text-align: center;
    padding: 36px 0;
    width: 200px;
    background: linear-gradient(180deg, rgb(255 255 255 / 0%) 0%, #f2f4f7 100%);
    backdrop-filter: blur(2px);
}

.buy-toast-box p {
    font-size: 14px;
    color: #000000;
    line-height: 24px;
    font-family: opposans;
}

.buy-toast-btn {
    padding: 6px 20px;
    background: #2250c4;
    border-radius: 8px;
    display: inline-block;
    margin-top: 16px;
    cursor: pointer;
    color: #ffffff;
    line-height: 24px;
    font-family: OPPOSansBold;
    color: #ffffff;
}

/* iframe页结束 */

/* 右侧栏盒子 */
.paper-nav-box {
    padding: 20px;
    width: 100%;
    box-sizing: border-box;
    border-radius: 8px;
    background: #252531;
}

.paper-nav-box .paper-nav-title {
    font-size: 16px;
    font-family: OPPOSansBold;
    color: #ffffff;
    line-height: 24px;
    margin-bottom: 10px;
}

/* 购买位置的盒子 */
.paper-buy-box {
    padding: 10px;
    box-sizing: border-box;
    background: linear-gradient(90deg, #303145, #44495e 100%);
    border-radius: 8px;
    box-shadow: 0px 4px 11px 0px rgba(21, 21, 34, 0.60);
}

.paper-buy-btn {
    background: linear-gradient(90deg, #ebcc9f, #f8d9ad 100%);
    border-radius: 8px;
    width: 100%;
    height: 42px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    user-select: none
}

.paper-buy-btn span {
    font-size: 16px;
    font-family: OPPOSansBold;
    color: #44495e;
    line-height: 24px;
}

.paper-buy-btn-ok {
    background: #60657b;
    cursor: auto;
}

.paper-buy-btn-ok span {
    color: #ffffff;
}

.paper-buy-desc {
    font-size: 12px;
    font-family: OPPOSans;
    color: #ffffff;
    line-height: 24px;
}

.paper-buy-desc span {
    font-size: 12px;
    font-family: OPPOSans;
    color: #F8D9AD;
    line-height: 24px;
}

.paper-type {
    display: flex;
    justify-content: space-between;
}

.paper-type .paper-type-item {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}

.paper-type-item img {
    width: 30px;
    height: 30px;
    margin-top: 2px;
}

.paper-type .paper-type-item span {
    font-size: 12px;
    font-family: OPPOSans;
    color: #ffffff;
    line-height: 20px;
    margin-top: 3px;
}

.paper-type .paper-type-item .type-img1 {
    display: block;
}

.paper-type .paper-type-item .type-img2 {
    display: none;
}

.paper-type .paper-type-item-have .type-img1 {
    display: none;
}

.paper-type .paper-type-item-have .type-img2 {
    display: block;
}

/* 类型可点卡片的导航 */
.paper-type-card {
    width: 100%;
    background: linear-gradient(119deg, #fcfdff, #b7c6da 100%);
    border-radius: 8px;
    padding: 20px;
    box-sizing: border-box;
    position: relative;
    cursor: pointer;
    transition: all 0.1s;
}

.paper-type-card:hover {
    transform: translateX(-4px);
}

.paper-type-card .paper-type-title {
    font-size: 12px;
    font-family: OPPOSans;
    text-align: LEFT;
    color: #8a8a8a;
    line-height: 17px;
    word-wrap: break-word;
}

.paper-type-footer {
    display: flex;
    justify-content: space-between;
}

.paper-type-name {
    font-size: 16px;
    font-family: OPPOSansBold;
    text-align: LEFT;
    line-height: 22px;
    color: #484E73;
}

.paper-type-footer i {
    font-size: 40px;
    color: rgba(85, 85, 85, 0.40);
}

.paper-type-card-video {
    background: linear-gradient(119deg, #fde5c1, #e7b978 100%);
}

.paper-type-card-video .paper-type-title,
.paper-type-card-video .paper-type-name {
    color: #333;
}

.paper-type-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.60);
    border-radius: 8px;
    display: none;
    justify-content: center;
    align-items: center;

}

.paper-type-mask span {
    font-size: 16px;
    text-align: LEFT;
    color: #ffffff;
    line-height: 24px;
}

.paper-type-card-active {
    cursor: auto;
    transform: translateX(0) !important;
}

.paper-type-card-active .paper-type-mask {
    display: flex;
}

.paper-type-icon {
    height: 30px;
    line-height: 30px;
}

.paper-type-icon img {
    width: 25px;
    height: 30px;
}

/* 关键词区 */
.paper-keyword {
    display: flex;
    flex-wrap: wrap;
    width: calc(100% + 8px);
    max-height: 131px;
    overflow-y: auto;
    margin-bottom: 10px;
}

.paper-keyword::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

.paper-keyword::-webkit-scrollbar-thumb {
    min-height: 40px;
    border: 4px solid transparent;
    border-radius: 6px;
    background-clip: content-box !important;
    background: #333;
}

.paper-keyword li {
    padding: 4px 6px;
    background: rgba(255, 255, 255, 0.10);
    border-radius: 8px;
    margin-right: 8px;
    margin-top: 10px;
    cursor: pointer;
}

.paper-keyword li span {
    font-size: 12px;
    font-family: OPPOSansBold;
    color: #ffffff;
    line-height: 20px;
}

/* 内容底部 */
.paper-footer {
    margin-top: 40px;
}

/* 热门文档 */
.hot-paper-board {
    background: #f9f9f9;
    border-radius: 8px;
    width: 100%;
    padding: 30px;
    box-sizing: border-box;
}

.hot-paper-board .hot-paper-title {
    font-size: 24px;
    font-family: OPPOSansBold;
    text-align: LEFT;
    color: #333333;
    line-height: 32px;
}

.hot-paper-board .hot-paper-cardList {
    display: flex;
    flex-wrap: wrap;
}

.hot-paper-cardList li {
    width: calc(50% - 10px);
    background: #ffffff;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    box-sizing: border-box;
    margin-top: 20px;
    padding: 20px;
    cursor: pointer;
}

.hot-paper-cardList li:hover {
    border-color: #2250C4;
}

.hot-paper-cardList li:nth-child(2n - 1) {
    margin-right: 20px;
}

.hot-paper-cardList li:nth-child(1),
.hot-paper-cardList li:nth-child(2) {
    margin-top: 0px;
}

.hot-paper-cardList li .hot-paper-item-title {
    font-size: 16px;
    font-family: OPPOSans;
    color: #333333;
    line-height: 24px;
    letter-spacing: -0.06px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.hot-paper-cardList li .hot-paper-item-title_en {
    font-size: 14px;
    font-family: OPPOSans;
    text-align: LEFT;
    color: #333;
    line-height: 20px;
    margin-top: 6px;
    height: 40px;
}

.hot-paper-cardList li .hot-paper-item-footer {
    margin-top: 14px;
}

.hot-paper-cardList li .hot-paper-item-type {
    display: flex;
}

.hot-paper-cardList li .hot-paper-item-type img {
    width: 18px;
    height: 18px;
    margin-right: 6px;
}

.hot-paper-cardList li .hot-paper-item-curriculum {
    font-size: 14px;
    font-family: OPPOSans;
    color: #8a8a8a;

}

/* 顶部面包屑 */
.study-buttom-line {
    line-height: 52px;
    height: 52px;
}

.study_position li {
    display: inline-block;
    vertical-align: top;
}

.study_position li,
.study_position li a {
    font-size: 14px;
    color: #909090;
}

.study_position li:last-child a {
    color: #101010;
}

.study_position li a:hover {
    color: #2c5fc8;
}