#app {
    position: relative;
    background: #f2f4f7;
    min-height: calc(100vh - 60px);
}

/* 公用样式 */
@font-face {
    font-family: 'OPPOSans';
    src: url(/OPPOSans-R.ttf);
}

@font-face {
    font-family: 'OPPOSansBold';
    src: url(/OPPOSans-B.ttf);
}


body {
    overflow-x: hidden;
}

body,
p {
    margin: 0;
    padding: 0;
}

.flex {
    display: flex;
    align-items: center;
}

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

.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-3 {
    text-overflow: -o-ellipsis-lastline;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
}

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

.margin-b20 {
    margin-bottom: 20px;
}

.margin-r20 {
    margin-right: 20px;
}

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

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

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

/* --页面顶部-- */
.teacher-header {
    width: 100%;
    background: #ffffff;
    padding-bottom: 40px;
}

/* 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;
}

/* 教师介绍 */
.teacher-header .teacher-introduction-box {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.teacher-header .introduction-left {
    display: flex;
}

.teacher-header .teacher-avater {
    width: 182px;
    height: 224px;
    border-radius: 8px;
    overflow: hidden;
    /* background: linear-gradient(180deg, #405d92, #172341 100%); */
    background: linear-gradient(to bottom, #5E6979, #1F2023);

}


.teacher-header .teacher-avater img {
    width: 100%;
    object-fit: cover;
    image-rendering: -webkit-optimize-contrast;
    transform: translateY(20px);
}

.teacher-header .introduction-text {
    margin-left: 40px;
}

.teacher-header .teacher-name {
    display: flex;
    align-items: flex-end;
}

.teacher-header .teacher-name h2 {
    font-size: 28px;
    font-family: OPPOSansBold;
    color: #333333;
    line-height: 38px;
}

.teacher-header .teacher-name h3 {
    font-size: 24px;
    font-family: OPPOSansBold;
    color: #333333;
    line-height: 32px;
    margin-left: 20px;
    vertical-align: bottom;
}

.teacher-header .teacher-desc {
    font-size: 16px;
    font-family: OPPOSansBold;
    color: #333333;
    line-height: 22px;
    margin-top: 22px;
}

.teacher-header .introduction-text>ul {
    margin-top: 22px;
}

.teacher-header .introduction-text>ul>li {
    font-size: 14px;
    font-family: OPPOSans;
    text-align: LEFT;
    color: #8a8a8a;
    line-height: 24px;
}

.teacher-header .introduction-text>ul>li::before {
    content: "●";
    color: #8a8a8a;
    margin-right: 5px;
}

.teacher-header .introduction-right {
    width: 348px;
    height: 203px;
}

.teacher-cup {
    width: 100%;
    display: flex;
    justify-content: center;
    user-select: none;
    height: 125px;
}

.teacher-cup-two .cup-1 {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 125px;
    width: 153px;
    display: flex;
    justify-content: center;
    z-index: 6
}

.teacher-cup-two .cup-2 {
    position: absolute;
    bottom: 1px;
    right: 0;
    width: 122px;
    height: 100px;
    display: flex;
    justify-content: center;
    z-index: 5
}

.teacher-degree {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-top: 40px;
}

.teacher-degree-item {
    width: 92px;
    height: 38px;
    border-radius: 4px;
    font-size: 16px;
    font-family: OPPOSansBold;
    color: #333333;
    line-height: 22px;
    display: flex;
    justify-content: center;
    align-items: center;
    user-select: none;
}


.teacher-degree-item-1 {
    background: linear-gradient(110deg, #b7c6da, #dfedff 100%);
}

.teacher-degree-item-2 {
    background: linear-gradient(111deg, #e7b978, #fde5c1 100%);
}

.teacher-degree div:nth-child(2) {
    margin-left: 20px;
}

/* 教师顶部-结束 */

/* 教师中部内容区 */
.teacher-content {
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    position: relative;
}

.teacher-intro-nav {
    padding: 0 10px;
    background-color: #fff;
    box-sizing: border-box;
    width: 100%;
    height: 48px;
    background: #ffffff;
    border-radius: 8px;
    display: flex;
    pointer-events: auto;
}



.teacher-intro-nav .intro-nav-item {
    padding: 12px 20px;
    margin: 0 10px;
    font-size: 18px;
    font-family: OPPOSans;
    color: #44495e;
    line-height: 24px;
    cursor: pointer;
    position: relative;
}

.teacher-intro-nav .intro-nav-item-active-0 {
    font-family: OPPOSansBold;
    color: #EEC182;
}

.teacher-intro-nav .intro-nav-item-active-1 {
    font-family: OPPOSansBold;
}

.intro-active-heng {
    display: none;
    position: absolute;
    bottom: 1px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: #44495e;
    border-radius: 4px;
}

.intro-nav-item-active-0 .intro-active-heng {
    display: block;
    background: #EEC182;
}

.intro-nav-item-active-1 .intro-active-heng {
    display: block;
}

.teacher-intro-board {
    width: 100%;
    padding: 30px 30px 0;
    box-sizing: border-box;
    background-color: #fff;
    border-radius: 8px;
    min-height: 606px;
}

.teacher-intro-type {
    margin-bottom: 30px;
}

.teacher-intro-board .intro-title {
    font-size: 20px;
    font-family: OPPOSansBold;
    color: #333333;
    line-height: 26px;
}

.teacher-intro-board p {
    font-size: 16px;
    font-family: OPPOSans;
    color: #333333;
    line-height: 32px;
    margin-top: 12px;
    white-space: pre-line;
}


/* 内容区右侧 */
.content-left {
    flex: 1;
}

/* 内容区右侧 */
.content-right {
    width: 348px;
    min-height: 1px;
    margin-left: 30px;
    pointer-events: auto;
}

.appointment-card {
    width: 100%;
    background: linear-gradient(162deg, #303145 0%, #44495e 100%);
    border-radius: 8px;
    box-sizing: border-box;
    padding: 30px;
    position: relative;
}

.appointment-card .appointment-title {
    font-size: 20px;
    font-family: OPPOSansBold;
    color: #ffffff;
    line-height: 32px;
}

.appointment-card .appointment-type {
    display: flex;
}

.appointment-card .appointment-type .appointment-type-item {
    font-size: 14px;
    font-family: OPPOSans;
    color: #ffffff;
    line-height: 32px;
}

.appointment-type-item:nth-child(n+2):before {
    content: "、";
    font-family: OPPOSans;
    font-size: 14px;
}

.appointment-gold {
    font-size: 16px;
    font-family: OPPOSansBold;
    color: #eec182;
    line-height: 22px;
}

.appointment-shuo {
    color: #C1CEDF;
}

.appointment-card .appointment-desc {
    font-size: 16px;
    font-family: OPPOSans;
    color: #ffffff;
    line-height: 22px;
}

.appointment-card .appointment-explain-box p {
    white-space: pre-line;
    font-size: 14px;
    font-family: OPPOSans;
    color: #8a8a8a;
    line-height: 24px;
}

.appointment-card .appointment-options {
    display: flex;
}

.appointment-card .appointment-option-item {
    background: rgba(96, 101, 123, 0.50);
    border-radius: 4px;
    padding: 5px 13px;
    font-size: 18px;
    font-family: OPPOSans;
    color: #ffffff;
    line-height: 32px;
    margin-left: 20px;
    cursor: pointer;
    user-select: none;
    position: relative;
}

.appointment-card .appointment-option-item img {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 22px;
    height: 22px;
    display: none;
}

.appointment-card .appointment-option-item:nth-child(1) {
    margin-left: 0;
}

.appointment-card .appointment-option-item-active {
    border: 1px solid #ffffff;
    cursor: auto;
    padding: 4px 12px;

}

.appointment-card .appointment-option-item-active img {
    display: block;
}

.appointment-card .appointment-btn {
    width: 100%;
    height: 56px;
    background: linear-gradient(110deg, #f0f3f8, #c1cedf 100%);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}


.appointment-card .appointment-btn span {
    font-size: 20px;
    font-family: OPPOSansBold;
    color: #44495e;
    line-height: 32px;
}

.appointment-card .appointment-btn-1 {
    background: linear-gradient(270deg, #e7b978, #fde5c1 100%);
    border-radius: 8px;

}

.appointment-card .appointment-btn-1 span {
    color: #44495E;
}

.appointment-card .appointment-btn-2 {
    background: #60657b;
}

.appointment-card .appointment-btn-2 span {
    color: #fff;
}


/* 内容区固定定位 */
.teacher-content-fixed {
    width: 100%;
    position: fixed;
    top: 80px;
    left: 0;
    pointer-events: none;
}

.teacher-content-bottom {
    width: 100%;
    position: absolute;
    bottom: 0;
    left: 0;
    pointer-events: none;
}

.teacher-content-bottom-2 {
    width: 100%;
    position: absolute;
    bottom: 90px;
    left: 0;
    pointer-events: none;
}

.teacher-content-fixed .teacher-intro-nav,
.teacher-content-bottom .teacher-intro-nav,
.teacher-content-bottom-2 .teacher-intro-nav {}

/* 相关推荐 */
.teacher-recommend {
    padding: 30px;
    box-sizing: border-box;
    background-color: #ffffff;
    border-radius: 8px;
    margin-top: 40px;
    margin-bottom: 60px;
}

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

/* nav部分样式 */
.recommend-nav {
    display: flex;
}

.recommend-nav-item {
    flex: 1;
    height: 48px;
    background-color: #fff;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
    cursor: pointer;
}


/* nav-未选中时部分样式 */
.recommend-after-backgr {
    display: flex;
    width: 100%;
}

.recommend-nav-item .recommend-backgr {
    width: 353px;
    height: 48px;
    background: #f2f4f7;
}

.recommend-nav-item .arrow {
    position: relative;
    width: 0;
    height: 0;
    border-top: 24px solid transparent;
    border-bottom: 24px solid transparent;
    /* border-right: 15px solid #transparent; */
}

.arrow::before {
    position: absolute;
    top: 50%;
    left: 0px;
    content: "";
    transform: translateY(-50%);
    border-top: 24px solid transparent;
    border-bottom: 24px solid transparent;
    border-left: 24px solid #f2f4f7;
}

.recommend-nav-item .arrow-none {
    position: absolute;
    left: 0;
}

.recommend-nav-item .arrow-none::before {
    border-top: 24px solid transparent;
    border-bottom: 24px solid transparent;
    border-left: 24px solid #fff;
    z-index: 7;
}

.recommend-nav-item .recommend-nav-text {
    position: absolute;
    top: 50%;
    left: 49%;
    transform: translate(-50%, -50%);
    font-size: 18px;
    font-family: OPPOSans;
    color: #000000;
    line-height: 24px;
    z-index: 6;

}

/* 选中后的样式 */
.recommend-active-backgr {
    position: absolute;
    left: 0;
    height: 48px;
    display: flex;
    width: 100%;
}

.recommend-nav-item:nth-child(3) .active-backgr {
    max-width: 410px;
}

.active-backgr {
    width: 0;
    height: 48px;
    background-color: #DAE9FF;
    max-width: 353px;
    -webkit-animation: progressAni 4s ease both;
}


.active-arrow {
    position: relative;
    width: 0;
    height: 0;
    border-top: 24px solid transparent;
    border-bottom: 24px solid transparent;
    /* border-right: 15px solid #transparent; */
}

.active-arrow::before {
    position: absolute;
    top: 50%;
    left: 0px;
    content: "";
    transform: translateY(-50%);
    border-top: 24px solid transparent;
    border-bottom: 24px solid transparent;
    border-left: 24px solid #DAE9FF;
}

@keyframes progressAni {
    0% {
        width: 0%;
    }

    100% {
        width: 100%;
    }
}

/* nav部分样式结束 */
/* 热门推荐 */
.recommend-list {
    display: flex;
    flex-wrap: wrap;
}

.recommend-list ul {
    display: flex;
    width: 100%;
    flex-wrap: wrap;
}

.recommend-list ul li {
    width: calc(50% - 10px);
    background: #ffffff;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    box-sizing: border-box;
    margin-top: 20px;

    cursor: pointer;
}

.recommend-list ul li a {
    padding: 20px;
    display: block;
}

.recommend-list ul li:hover {
    border-color: #2250C4;
}

.recommend-list ul li:nth-child(2n - 1) {
    margin-right: 20px;
}

.recommend-list ul li:nth-child(1),
.recommend-list ul li:nth-child(2) {
    margin-top: 0px;
}

/* 相关推荐-学术社区 */
.recommend-list ul 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;
}

.recommend-list ul 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;
}

.recommend-list ul li .hot-paper-item-footer {
    margin-top: 14px;
}

.recommend-list ul li .hot-paper-item-type {
    display: flex;
}

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

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

/* 相关推荐-论文辅导 */
.recommend-list ul .paper-tutor-box {
    display: flex;
}

.recommend-list ul li .paper-tutor-left {
    width: 85px;
    height: 102px;
    border-radius: 8px;
    overflow: hidden;
    background: linear-gradient(to bottom, #5E6979, #1F2023);
    margin-right: 20px;
}

.recommend-list ul li .paper-tutor-left img {
    width: 100%;
    object-fit: cover;
    image-rendering: -webkit-optimize-contrast;
    transform: translateY(10px);
}

.recommend-list ul li .paper-tutor-right {
    flex: 1
}

.recommend-list ul li .paper-tutor-name {
    font-size: 18px;
    font-family: OPPOSansBold;
    color: #333333;
    line-height: 24px;
}

.recommend-list ul li .paper-tutor-desc {
    font-size: 14px;
    font-family: OPPOSans;
    color: #8a8a8a;
    line-height: 24px;
    margin-top: 14px;
}

.recommend-list ul li .paper-tutor-type {
    display: flex;
}

.paper-tutor-type .type-re:nth-child(1) {
    margin-right: 14px;
}

.recommend-list ul li .paper-tutor-options {
    display: flex;
    margin-top: 10px;
}

.recommend-list ul li .paper-tutor-options .tutor-item:nth-child(1) {
    margin-right: 8px;
}

.recommend-list ul li .paper-tutor-options .tutor-item {
    padding: 0 8px;
    background: #f5f6fa;
    border-radius: 4px;
    font-size: 12px;
    font-family: OPPOSans;
    color: #333333;
    line-height: 28px;
}

/* 相关推荐-论文翻译 */
.recommend-list .paper-fanyi-box {
    display: flex;
    width: 100%;
    justify-content: space-between;
}

.paper-fanyi-item {
    width: 267px;
    height: 308px;
    background: #ffffff;
    border-radius: 4px;
    border: 1px solid #d9d9d9;
    /* margin-left: 20px; */
    box-sizing: border-box;
    padding: 20px;
}

.paper-fanyi-title {
    font-size: 18px;
    font-family: OPPOSansBold;
    color: #333333;
    line-height: 24px;
}

.paper-fanyi-desc {
    font-size: 16px;
    font-family: OPPOSans;
    color: #8a8a8a;
    line-height: 24px;
    margin-top: 25.5px;
}

.heng {
    width: 100%;
    height: 1px;
    background-color: #eee;
    margin-top: 25.5px;
    display: block;
}

.paper-fanyi-type-label {
    margin-top: 25.5px;
    font-size: 16px;
    font-family: OPPOSans;
    font-weight: 400;
    text-align: LEFT;
    color: #333333;
    line-height: 24px;
}

.paper-fanyi-type-options {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.fanyi-type-item {
    width: 109px;
    height: 36px;
    background: #f5f6fa;
    border: 1px solid #eff0f5;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
    font-family: OPPOSans;
    color: #333333;
    line-height: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
}

.fanyi-type-item-active {
    background: #eaf1fe;
    border: 1px solid #2250c4;
}


.paper-fanyi-item:nth-child(1) {
    margin-left: 0;
}

.paper-go-fanyi-btn {
    width: 100%;
    height: 48px;
    background: #eeeeee;
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 25px;
    cursor: pointer;
}

.paper-go-fanyi-btn span {
    font-size: 16px;
    font-family: OPPOSans;
    color: #8a8a8a;
    line-height: 32px;
}

.paper-fanyi-item:hover {
    border: 1px solid #2250c4;
}

.paper-fanyi-item .paper-go-fanyi-btn:hover {
    background: #2250c4;
}

.paper-fanyi-item .paper-go-fanyi-btn:hover span {
    color: #fff;
}


/* 右侧盒子特效 */
/* .appointment-card:hover .page-que {
    border-top: 35px solid transparent;
    border-right: 35px solid transparent;
    border-left: 35px solid #ddd;
    border-bottom: 35px solid #ddd;
    transform: rotate3d(1, 1, 0, 43deg);
    right: -1px;
    top: -1px;

}

.appointment-card:hover .page-que-backgr {
    border-top: 35px solid #fff;
    border-right: 35px solid #fff;
    border-left: 35px solid transparent;
    border-bottom: 35px solid transparent;
} */

/* .page-que {
    position: absolute;
    top: -3px;
    right: -1px;
    width: 0;
    height: 0;
    border-top: 30px solid transparent;
    border-right: 30px solid transparent;
    border-left: 30px solid #edecec;
    border-bottom: 30px solid #edecec;
    border-radius: 0 0 0 6px;
    transform-style: preserve-3d;
    perspective-origin: 10% 10%;
    transform: rotate3d(1, 1, 0, 50deg);
    z-index: 6;
    transition: all 0.3s ease-in-out;
    pointer-events: none;
} */

.page-que-backgr {
    position: absolute;
    top: 0;
    right: 0;
    width: 0;
    height: 0;
    border-top: 32px solid #fff;
    border-right: 32px solid #fff;
    border-left: 32px solid transparent;
    border-bottom: 32px solid transparent;
    border-radius: 0 7px 0 0;
    /* transition: all 0.3s ease-in-out; */

}

.page-que-zhiyin {
    padding: 0 10px;
    height: 26px;
    border: 1px solid #ffffff;
    border-radius: 4px;
    position: absolute;
    top: 7px;
    right: 59px;
    user-select: none;
    animation: loopZhiyin 1s infinite;
}

.page-que-zhiyin span {
    font-size: 12px;
    font-family: OPPOSans;
    color: #ffffff;
    line-height: 26px;
}

.page-que-zhiyin i {
    width: 0;
    height: 0;
    border-left: 5px solid #fff;
    border-bottom: 3px solid transparent;
    border-top: 3px solid transparent;
    border-right: 6px solid transparent;
    position: absolute;
    top: 10px;
    right: -12px;
}
@keyframes loopZhiyin {
    0% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(-10px);
    }
    100% {
        transform: translateX(0);
    }
}


.page-que-type {
    position: absolute;
    top: 8px;
    top: 5px;
    right: 4px;
    height: 29px;
    font-size: 28px;
    font-family: OPPOSansBold;
    color: #eec182;
    line-height: 24px;
    z-index: 5;
    pointer-events: none;
}

.page-que-type-1 {
    color: #C1CEDF;
}