.material-main {
    width: 100vw;
    height: 100vh;
    background: #F8F8F8;
    overflow-y: auto;
}

.YUGO-news-main {
    background: #F8F8F8;
}

.material-content {
    width: 1200px;
    margin-left: calc(50vw - 600px);
    padding-bottom: 46px;
}

* {
    box-sizing: border-box;
}

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

::-webkit-scrollbar {
    display: none;
}

/* .book-header-nav {
    width: 100%;
    height: 140px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 75px;
    z-index: 100;
    background: #F8F8F8;
} */
#book_nav {
    width: 1200px;
    height: 140px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 75px;
    z-index: 100;
    background: #F8F8F8;
}

#book_hide_nav {
    width: 1200px;
    height: 120px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 75px;
    z-index: 100;
    background: #F8F8F8;
}

.nav-hide-child {
    width: 279px;
    height: 53px;
    border-radius: 5px;
    cursor: pointer;
    padding-left: 0px !important;
    position: relative;
    font-size: 18px;
    font-weight: 800;
    color: #171717;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.nav-child {
    width: 220px;
    height: 73px;
    background: #FFFFFF;
    /* border: 1px solid #10B4B5; */
    border-radius: 5px;
    cursor: pointer;
    padding-left: 90px;
    position: relative;
    font-size: 16px;
    font-weight: 800;
    color: #171717;
    display: flex;
    align-items: center;
    position: relative;
}

.nav-child.active {
    border: 1px solid #10B4B5;
}

.nav-big-book {
    width: 82px;
    height: 82px;
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/book-01.png') no-repeat;
    background-size: 100% 100%;
    position: absolute;
    left: 10px;
    bottom: 3px;
    z-index: 2;
}

.nav-book-one, .nav-book-two, .nav-book-three,.nav-book-four {
    width: 65px;
    height: 83px;
    position: absolute;
    left: 19px;
    bottom: 3px;
    z-index: 2;
}

.nav-book-one {
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/book-02.png') no-repeat;
    background-size: 100% 100%;
}

.nav-book-two {
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/book-03.png') no-repeat;
    background-size: 100% 100%;
}

.nav-book-three {
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/book-04.png') no-repeat;
    background-size: 100% 100%;
}
.nav-book-four {
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/book-05.png') no-repeat;
    background-size: 100% 100%;
}

.book-detail-content {
    width: 100%;
    height: 622px;
    background: #FFFFFF;
    border: 0px solid #504D4F;
    border-radius: 15px;
    padding: 32px 34px 45px 34px;
    display: flex;
    flex-direction: row;
}

.book-detail-left {
    width: 450px;
    height: 100%;
}

.book-detail-right {
    width: calc(100% - 450px);
    height: 100%;
    padding-left: 50px;
}

.book-detail-info {
    width: 100%;
    height: 100%;
    padding-top: 45px;
    display: flex;
    flex-direction: column;
}

.book-detail-info>span:nth-child(1) {
    font-size: 36px;
    font-weight: 800;
    line-height: 36px;
    color: #171717;
}

.book-detail-info>span:nth-child(2) {
    font-size: 28px;
    color: #666666;
    line-height: 40px;
    margin-top: 22px;
}

.book-detail-info>span:nth-child(3) {
    font-size: 24px;
    color: #666666;
    margin-top: 20px;
}

.book-money {
    width: 100%;
    margin-top: 60px;
}

.book-money span:nth-child(1) {
    font-size: 24px;
    color: #E72929;
}

.book-money span:nth-child(2) {
    font-size: 36px;
    color: #E72929;
}

.book-money span:nth-child(3) {
    font-size: 16px;
    color: #999999;
    margin-left: 20px;
}

.book-chart-btn {
    width: 182px;
    height: 48px;
    border: 0px solid #504D4F;
    background: linear-gradient(90deg, #F15858 0%, #E72929 100%);
    border-radius: 24px;
    font-size: 18px;
    font-weight: bold;
    color: #FFFFFF;
    margin-top: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.book-detail-banner {
    width: 450px;
    height: 450px;
    background: #F1EDEC;
    border: 0px solid #504D4F;
    border-radius: 15px;
    overflow-y: hidden;
    position: relative;
}

.book-detail-banner>ul {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    list-style: none;
}

.book-detail-banner>ul>li {
    width: 100%;
    height: 100%;
    float: left;
}

.book-detail-banner>ul>li img {
    width: 100%;
    height: 100%;
}

.book-banner-small {
    width: 100%;
    height: 74px;
    margin-top: 20px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.banner-child {
    width: 74px;
    height: 74px;
    background: #E6E2CE;
    border: 0px solid #504D4F;
    opacity: 0.59;
    border-radius: 5px;
    overflow: hidden;
    cursor: pointer;
}

.banner-child img {
    width: 100%;
    height: 100%;
}

.banner-child.active {
    opacity: 1;
}

.book-detail-main {
    width: 100%;
    padding-left: 205px;
    padding-right: 205px;
    background: #FFFFFF;
    border: 0px solid #504D4F;
    border-radius: 15px;
    margin-top: 22px;
    padding-bottom: 30px;
}

.book-detail-title {
    width: 100%;
    height: 111px;
    font-size: 36px;
    font-weight: 800;
    color: #171717;
    line-height: 111px;

}

.book-detail-image {
    width: 100%;
}

.book-detail-image img {
    width: 100%;
    display: block;
}

/* 手机端 */
#phone_view {
    background: #F5F5F5;
}

.material-phone-content {
    width: 100vw;
}

.book-phone-header {
    width: 100%;
    padding: 17px 10px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.phone-child {
    width: calc((100vw - 50px) / 5);
    height: calc((100vw - 50px) / 5);
    background: #FFFFFF;
    border: 0px solid #504D4F;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.phone-child.active {
    border: 1px solid #10B4B5;
}

.phone-child span {
    font-size: 10px;
    color: #171717;
    transform: scale(0.8);
}

.book-phone-banner {
    width: 100vw !important;
    height: 100vw !important;
    background: #F1EDEC;
    border: 0px solid #504D4F;
    overflow-y: hidden;
    position: relative;
}

.book-phone-banner>ul {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    list-style: none;
}

.book-phone-banner>ul>li {
    width: 100%;
    height: 100%;
    float: left;
}

.book-phone-banner>ul>li img {
    width: 100%;
    height: 100%;
}

.book-phone-money {
    width: 100%;
    height: 55px;
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/book-money-bg.png') no-repeat;
    background-size: 100% 100%;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding-left: 15px;
    padding-right: 17px;
}

.book-phone-title {
    width: 100%;
    height: 85px;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    padding-left: 15px;
    justify-content: center;

}

.book-phone-money>.money span:nth-child(1) {
    font-size: 24px;
    font-weight: bold;
    color: #FFFFFF;
}

.book-phone-money>.money span:nth-child(2) {
    font-size: 29px;
    font-weight: bold;
    color: #FFFFFF;
}

.book-phone-money>.num {
    font-size: 12px;
    font-weight: bold;
    color: #FFFFFF;
    line-height: 12px;
}

.book-phone-title span:nth-child(1) {
    font-size: 18px;
    font-weight: bold;
    color: #333333;
    line-height: 18px;
}

.book-phone-title span:nth-child(2) {
    font-size: 14px;
    color: #7E7E7E;
    line-height: 14px;
    margin-top: 10px;
}

.material-modal-mask {
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    position: fixed;
    left: 0px;
    top: 0px;
    z-index: 100;
    display: none;
}

.material-modal-content {
    width: 411px;
    height: 440px;
    background: #FFFFFF;
    border: 1px solid #999999;
    border-radius: 15px;
    position: relative;
    margin-left: calc((100vw - 411px) / 2);
    margin-top: calc((100vh - 454px) / 2);
}

.material-modal-content span {
    font-size: 20px;
    color: #000000;
    line-height: 30px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 68px;
    white-space: nowrap;
}

.material-modal-code {
    width: 250px;
    height: 250px;
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/wechart-code-border.png') no-repeat;
    background-size: 100% 100%;
    position: absolute;
    top: 135px;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px;
}

.material-modal-code img {
    width: 100%;
    height: 100%;
}


.material-modal-content .close {
    width: 60px;
    height: 60px;
    position: absolute;
    right: 0px;
    top: 0px;
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/close.png') no-repeat;
    background-size: 26px 26px;
    background-position: center center;
    cursor: pointer;
}

.material-chart-btn {
    width: 160px;
    height: 214px;
    background: url('https://yuguwechat.oss-cn-shanghai.aliyuncs.com/center/book/material-chart.png') no-repeat;
    background-size: 100% 100%;
    position: fixed;
    right: 140px;
    top: 400px;
    z-index: 10;
    cursor: pointer;
}