* {
    margin: 0;
    padding: 0;
}

.nav {
    background-color: #fbfbfb;
}

.nav-content {
    width: 1340px;
    max-width: 99%;
    height: 80px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav img {
    width: 100%;
}

.nav-left {
    
}

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

.nav-item {
    width: 56px;
    padding: 0 5px;
    text-align: center;
}

.nav-item img {
    display: block;
    width: 40px;
    margin: 0 auto;
}

.nav-item span {
    font-size: 14px;
    color: #333;
    line-height: 25px;
    font-family: "微软雅黑";
    text-align: center;
}

.footer {
    font-size: 12px;
    color: #595757;
    text-align: center;
    line-height: 70px;
}

.content {
    background-color: #000000;
}

.model {
    min-width: 1440px;
}

.box {
    position: relative;
    width: 1440px;
    max-width: 100%;
    margin: 0 auto;
    overflow: hidden;
    font-size: 0;
    line-height: 0;
}

.box-bg img {
    width: 100%;
}

.navbar {
    position: absolute;
    bottom: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 40px;
    padding: 0 40px 0 65px;
    box-sizing: border-box;
    background-color: rgba(0, 0, 0, 0.5);
}

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

.navbar-left a {
    position: relative;
    padding: 0 15px;
    display: block;
    font-size: 14px;
    color: #fff;
    line-height: 30px;
    text-decoration: none;
}

.navbar-left a span {
    position: relative;
    z-index: 9;
    cursor: pointer;
}

.navbar-left a::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    transform: scale(0);
    transition: 0.3s;
    transform-origin: top;
    background-image: linear-gradient(to bottom, #c80101, #8f1818);
}

.navbar-left a:hover::before {
    transform: scale(1);
}

.navbar-left a + a {
    border-left: 1px solid #a00000;
}

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

.navbar-right img {
    padding: 0 10px;
    width: 20px;
    cursor: pointer;
}

img {
    pointer-events: all;
}

.cover-content {
    position: absolute;
    top: 42%;
    left: 40%;
    cursor: pointer;
}
.guangshu {
    display: block;
    position: relative;
    width: 3.7vw;
    height: 3vw;
    margin: 0 auto;
    overflow: hidden;
}
.guangshu:before {
    content: "";
    position: absolute;
    width: 40%;
    height: 100%;
    top: 0;
    left: -100%;
    overflow: hidden;
    background: -moz-linear-gradient(
        left,
        rgba(255, 255, 255, 0) 0,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    background: -webkit-gradient(
        linear,
        left top,
        right top,
        color-stop(0%, rgba(255, 255, 255, 0)),
        color-stop(50%, rgba(255, 255, 255, 0.3)),
        color-stop(100%, rgba(255, 255, 255, 0))
    );
    background: -webkit-linear-gradient(
        left,
        rgba(255, 255, 255, 0) 0,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    background: -o-linear-gradient(
        left,
        rgba(255, 255, 255, 0) 0,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    -webkit-transform: skewX(-25deg);
    -moz-transform: skewX(-25deg);
}

.guangshu:hover:before {
    left: 150%;
    transition: left 1s ease 0s;
}

.cover-content:nth-of-type(2) {
    top: 29%;
    left: 5%;
}

.cover-content:nth-of-type(2) .guangshu {
    width: 12vw;
    height: 4vw;
    transform: skewY(-35deg);
}

.cover-content:nth-of-type(3) {
    top: 44%;
    left: 11%;
}

.cover-content:nth-of-type(3) .guangshu {
    width: 10vw;
    height: 5vw;
    transform: skewY(-21deg);
}

.cover-content:nth-of-type(4) {
    top: 36%;
    left: 25.5%;
}

.cover-content:nth-of-type(4) .guangshu {
    width: 4.9vw;
    height: 3vw;
}

.cover-content:nth-of-type(5) {
    top: 27%;
    left: 30.5%;
}

.cover-content:nth-of-type(5) .guangshu {
    width: 8.9vw;
    height: 3vw;
}

.cover-content:nth-of-type(6) {
    top: 54%;
    left: 35.5%;
}

.cover-content:nth-of-type(6) .guangshu {
    width: 3.8vw;
    height: 3vw;
}

.cover-content:nth-of-type(7) {
    top: 34%;
    left: 46.5%;
}

.cover-content:nth-of-type(7) .guangshu {
    width: 3.5vw;
    height: 2.3vw;
}

.cover-content:nth-of-type(8) {
    top: 31%;
    left: 57.8%;
}

.cover-content:nth-of-type(8) .guangshu {
    width: 2vw;
    height: 2vw;
}

.cover-content:nth-of-type(9) {
    top: 28%;
    left: 67.8%;
}

.cover-content:nth-of-type(9) .guangshu {
    width: 5vw;
    height: 4vw;
}

.cover-content:nth-of-type(10) {
    top: 43%;
    left: 59.8%;
}

.cover-content:nth-of-type(10) .guangshu {
    width: 3vw;
    height: 3.2vw;
}

.cover-content:nth-of-type(11) {
    top: 58%;
    left: 58.5%;
}

.cover-content:nth-of-type(11) .guangshu {
    width: 7vw;
    height: 3.2vw;
    transform: skewY(10deg);
}

.cover-content:nth-of-type(12) {
    top: 40%;
    left: 73.5%;
}

.cover-content:nth-of-type(12) .guangshu {
    width: 3vw;
    height: 2.2vw;
    transform: skewY(-10deg);
}

.cover-content:nth-of-type(13) {
    top: 32.7%;
    left: 81.5%;
}

.cover-content:nth-of-type(13) .guangshu {
    width: 4.4vw;
    height: 3.2vw;
    transform: skewY(-10deg);
}

.cover-content:nth-of-type(14) {
    top: 50%;
    left: 84.5%;
}

.cover-content:nth-of-type(14) .guangshu {
    width: 3vw;
    height: 5.2vw;
    transform: skew(-9deg, 30deg);
}

.cover-content:nth-of-type(15) {
    top: 43.5%;
    left: 92.5%;
}

.cover-content:nth-of-type(15) .guangshu {
    width: 2.2vw;
    height: 4.2vw;
    transform: skew(-8deg, 12deg);
}

.cover-content:nth-of-type(16) {
    top: 35%;
    left: 11%;
}

.cover-content:nth-of-type(16) .guangshu {
    width: 10.2vw;
    height: 4.2vw;
}

.excessive,
.product,
.product-show {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.excessive {
    z-index: 999;
}

.product img,
.excessive video {
    width: 100%;
}

.excessive video {
    height: 768px;
    object-fit: fill;
}

.product-content {
    display: none;
    position: relative;
}

.product-show {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 999;
}

.product-3d {
    position: absolute;
    top: 23%;
    left: 10%;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    cursor: pointer;
    transition: 0.3s;
}

.product-3d:hover {
    transform: translate(-10px, -10px);
}

.product-3d-title {
    width: 130px;
    height: 30px;
    font-size: 18px;
    font-weight: bold;
    line-height: 30px;
    color: #fff;
    text-align: center;
    box-shadow: 1px 1px 7px 1px #999;
    background-color: #3691de;
    transform: skewX(-20deg) translate(-44px, -55px);
}

.product-3d-title span,
.product-3d-p span {
    display: block;
    transform: skewX(20deg);
}

.product-3d-p {
    width: 260px;
    font-size: 12px;
    font-weight: bold;
    line-height: 30px;
    color: #333;
    text-align: center;
    background-color: #fff;
    transform: skewX(-20deg);
    box-shadow: 1px 1px 7px 1px #999;
}

.product-nav {
    position: absolute;
    bottom: 10%;
    left: 2%;
}

.product-nav-item {
    display: flex;
    margin-bottom: 10px;
    width: 160px;
    height: 32px;
    cursor: pointer;
    background-color: #999999;
}

.product-nav-left {
    position: relative;
    width: 32px;
    background-color: #f00;
}

.product-nav-left i {
    display: block;
    position: absolute;
    width: 6px;
    height: 6px;
    transition: 0.3s;
    background-color: #fff;
}

.product-nav-left i:nth-of-type(1) {
    top: 12px;
    left: 9px;
}

.product-nav-left i:nth-of-type(2) {
    top: 5px;
    left: 16px;
}

.product-nav-left i:nth-of-type(3) {
    top: 19px;
    left: 16px;
}

.product-nav-item:hover .product-nav-left i:nth-of-type(1) {
    top: 5px;
}

.product-nav-item:hover .product-nav-left i:nth-of-type(2) {
    top: 19px;
    left: 9px;
}

.product-nav-item:hover .product-nav-left i:nth-of-type(3) {
    top: 12px;
}

.product-nav-right {
    position: relative;
    flex: 1 0 0;
}

.product-nav-right::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 32px;
    transition: 0.3s;
    background-color: #f00;
}

.product-nav-right span {
    position: relative;
    padding-left: 20px;
    font-size: 14px;
    line-height: 32px;
    color: #333;
}

.product-nav-item:hover .product-nav-right::before {
    width: 100%;
}

.product-nav-item:hover .product-nav-right span {
    color: #fff;
}

.rollerblade-img {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-user-drag: none;
}

.rollerblade-drag {
    cursor: move;
}

.popper {
    position: absolute;
    display: none;
    top: -87px;
    left: 50%;
    z-index: 10;
    transform: translateX(-50%);
}

.popper-popconfirm {
    position: relative;
    width: 180px;
    padding: 12px;
    background-image: linear-gradient(to bottom, #f9f9f9, #cfcfcf);
    border: 1px solid #e4e7ed;
    border-radius: 8px;
    box-shadow: 0px 0px 12px rgba(0, 0, 0, 0.12);
}

.popper-popconfirm b {
    font-size: 18px;
    font-weight: bold;
    color: #f00;
    line-height: 24px;
}

.popper-popconfirm p {
    margin-top: 5px;
    font-size: 14px;
    color: #606266;
    line-height: 16px;
}

.popper-arrow {
    position: absolute;
    width: 10px;
    height: 10px;
}

.popper-arrow::before {
    content: "";
    position: absolute;
    bottom: -9px;
    left: 76px;
    width: 10px;
    height: 10px;
    content: " ";
    transform: rotate(45deg);
    background: #cfcfcf;
    border: 1px solid #e4e7ed;
    border-top-left-radius: 2px;
    border-top-color: transparent !important;
    border-left-color: transparent !important;
}

.cover-content:hover .popper {
    display: block;
}

.product-swiper-item {
    display: none;
}

.product-prev,
.product-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    line-height: 28px;
    color: #f00;
    cursor: pointer;
}

.product-prev {
    left: 20px;
}

.product-next {
    right: 20px;
}

.product-prev span,
.product-next span {
    display: block;
    width: 100px;
    text-align: center;
}

.product-prev img,
.product-next img {
    width: 38px;
}

.product-prev img {
    transform: rotate(-180deg);
}

.back {
    position: absolute;
    bottom: -125px;
    right: -125px;
    width: 250px;
    height: 250px;
    cursor: pointer;
    transform: rotate(-45deg);
    background-color: #990000;
}

.back-content {
    width: 100%;
    height: 100%;
    padding-top: 87px;
    transform: rotate(45deg);
}

.back-content img {
    margin-right: 10px;
    padding-top: 5px;
    width: 14px;
    height: 14px;
}

.back-content span {
    font-size: 22px;
    line-height: 22px;
    color: #fff;
}

.dialog-item {
    position: absolute;
    display: none;
    top: 50%;
    left: 50%;
    width: 900px;
    padding: 30px 40px;
    border-radius: 4px;
    background-color: #fff;
    z-index: 999;
    transform: translate(-50%, -50%);
}

.dialog-title {
    display: flex;
    padding: 10px 0;
    border-bottom: 2px solid #666666;
}

.dialog-title-left {
    position: relative;
    width: 150px;
    font-size: 18px;
    color: #f00;
    line-height: 18px;
    text-align: center;
}

.dialog-title-left::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: -12px;
    width: 150px;
    height: 2px;
    background-color: #f00;
}

.dialog-title-right {
    flex: 1 0 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    cursor: pointer;
}

.dialog-title-right img {
    margin-right: 10px;
    display: block;
    width: 16px;
    height: 16px;
}

.dialog-title-right span {
    font-size: 14px;
    line-height: 14px;
    color: #f00;
}

.dialog-content {
    display: flex;
    margin-top: 20px;
    padding: 20px 0;
    max-height: 500px;
    overflow-y: auto;
    overflow-x: hidden;
}

.dialog-pic {
    width: 320px;
    padding: 0 40px;
    flex-shrink: 0;
}

.dialog-pic img {
    width: 100%;
}

.dialog-text {
    flex: 1 0 0;
}

.dialog-text-title {
    width: 160px;
    height: 30px;
    padding: 0 20px;
    font-size: 18px;
    font-weight: bold;
    color: #fff;
    line-height: 30px;
    border: 1px solid #989da3;
    background-color: #f00;
}

.dialog-text-content {
    margin-top: 16px;
    font-size: 14px;
    line-height: 24px;
    color: #000;
}

.dialog-text-content p,
.dialog-text-content b {
    display: block;
    text-indent: 2em;
}

.dialog-text-content span {
    margin-bottom: 10px;
    display: block;
    font-size: 18px;
    line-height: 24px;
    color: #f00;
}

#indicate .dialog-text-content {
    margin-top: 0;
}

#indicate .dialog-item {
    width: 670px;
}

#indicate .dialog-pic {
    width: 220px;
    margin-right: 40px;
    padding: 0;
}

#indicate p {
    position: relative;
}

.indicate-item {
    display: none;
}

#indicate p::before {
    content: "";
    position: absolute;
    top: 8px;
    left: 5px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #000;
}

.dialog-info img {
    width: 100%;
}

.map {
    position: absolute;
    display: none;
    bottom: 40px;
    right: -600px;
    z-index: 88;
    transition: 0.5s;
}

.map:hover {
    right: 0;
}

.map-content {
    display: flex;
}

.map-left {
    padding-top: 58px;
    cursor: pointer;
}

.map-right {
    position: relative;
}

.map-notification {
    position: absolute;
    z-index: 10;
}

.map-notification:nth-of-type(1) {
    top: 164px;
    left: 89px;
}

.map-notification:nth-of-type(2) {
    top: 92px;
    left: 83px;
}

.map-notification:nth-of-type(3) {
    top: 130px;
    left: 130px;
}

.map-notification:nth-of-type(4) {
    top: 120px;
    left: 170px;
}

.map-notification:nth-of-type(5) {
    top: 94px;
    left: 217px;
}

.map-notification:nth-of-type(6) {
    top: 112px;
    left: 286px;
}

.map-notification:nth-of-type(7) {
    top: 140px;
    left: 250px;
}

.map-notification:nth-of-type(8) {
    top: 178px;
    left: 222px;
}
.map-notification:nth-of-type(9) {
    top: 100px;
    left: 350px;
}

.map-notification:nth-of-type(10) {
    top: 143px;
    left: 363px;
}

.map-notification:nth-of-type(11) {
    top: 195px;
    left: 374px;
}
.map-notification:nth-of-type(12) {
    top: 94px;
    left: 420px;
}

.map-notification:nth-of-type(13) {
    top: 130px;
    left: 447px;
}

.map-notification:nth-of-type(14) {
    top: 113px;
    left: 498px;
}
.map-notification:nth-of-type(15) {
    top: 173px;
    left: 513px;
}
.map-notification:nth-of-type(16) {
    top: 150px;
    left: 558px;
}

.map-drop,
.indicate-dot-item i {
    position: relative;
    display: block;
    width: 12px;
    height: 12px;
    cursor: pointer;
    z-index: 10;
    border-radius: 50%;
    border: 3px solid #fff;
    box-sizing: border-box;
    background-color: #900;
    box-shadow: 0 0 2px 1px #fff;
}

.map-drop::before,
.indicate-dot-item i::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    z-index: -1;
    transform: translate(-50%, -50%);
    animation: fluctuate 1.5s infinite;
    box-sizing: border-box;
    border-radius: 50%;
    border: 1px solid #900;
}

.map-message {
    display: none;
    position: absolute;
    top: -40px;
    left: -80px;
    font-size: 14px;
    font-weight: bold;
    line-height: 26px;
    color: #fff;
    width: 170px;
    height: 26px;
    text-align: center;
    z-index: 30;
    box-shadow: 0 0 2px 2px #fff;
    background-image: radial-gradient(
        circle at center,
        #ff0000 80%,
        transparent
    );
}

.map-notification:hover .map-message {
    display: block;
}

#targetPic {
    width: 100%;
}

/* .carouselSwiper {
    width: 100%;
    padding: 20px;
    box-sizing: border-box;
    overflow: initial;
}

.carouselSwiper .swiper-slide {
    text-align: center;
    font-size: 18px;
    background: #fff;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
    transition: 300ms;
    transform: scale(0.8);
}
.carouselSwiper .swiper-slide-active,
.carouselSwiper .swiper-slide-duplicate-active {
    transform: scale(1.2);
} */

.experience {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99;
}

.experience-content {
    position: relative;
    width: 100%;
    height: 100%;
}

.experience-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.experience-video video {
    width: 100%;
    height: 768px;
    object-fit: fill;
}

.experience-control {
    position: absolute;
    left: 50%;
    bottom: 80px;
    width: 76px;
    transform: translateX(-50%);
    border-radius: 24px;
    cursor: pointer;
}

.experience-control img {
    width: 100%;
}

.experience-btn {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.experience-btn span {
    display: block;
    width: 130px;
    height: 30px;
    font-size: 16px;
    line-height: 30px;
    color: #fff;
    cursor: pointer;
    border-radius: 6px;
    box-shadow: 0 0 4px 1px #000;
    background: radial-gradient(
        circle at center,
        rgb(250, 0, 0) 80%,
        rgb(150, 0, 0)
    );
}

.experience-btn span + span {
    margin-left: 30px;
}

.swiper-prev,
.swiper-next {
    position: absolute;
    top: 50%;
    width: 40px;
    cursor: pointer;
    transform: translateY(-50%);
    z-index: 99;
}

.swiper-prev {
    left: 0;
    transform-origin: top;
    transform: rotate(-180deg) translateY(-50%);
}

.swiper-next {
    right: 0;
}

.swiper-prev img,
.swiper-next img {
    width: 100%;
}

.loader {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
}

.loader-content {
    position: relative;
    width: 100%;
    height: 100%;
    background-color: #e6e6e1;
}

.loader-num {
    position: absolute;
    display: flex;
    width: 100px;
    height: 100px;
    top: 28%;
    left: 50%;
    z-index: 20;
    transform: translateX(-50%);
}

.loader-num span {
    font-size: 16px;
    line-height: 16px;
    color: #000;
}

.loader-cricle {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
}

.loader-cricle i {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    box-sizing: border-box;
    border: 6px solid #999;
}

.loader-cricle i:nth-of-type(1),
.loader-cricle i:nth-of-type(2) {
    width: 100px;
    height: 100px;
    animation: cricle 1s infinite;
}

.loader-cricle i:nth-of-type(3),
.loader-cricle i:nth-of-type(4) {
    width: 70px;
    height: 70px;
    border-color: #666;
    animation: cricle 2s infinite;
}

.loader-cricle i:nth-of-type(1),
.loader-cricle i:nth-of-type(3) {
    border-top: 0;
    transform: translate(-50%, -50%) rotate(0);
    clip-path: polygon(50% 50%, 100% 100%, 0% 100%);
}

.loader-cricle i:nth-of-type(2),
.loader-cricle i:nth-of-type(4) {
    border-bottom: 0;
    transform: translate(-50%, -50%) rotate(0);
    clip-path: polygon(0% 0%, 100% 0%, 50% 50%);
}

.loader-road {
    position: absolute;
    top: 25%;
    left: 50%;
    width: 450px;
    height: 450px;
    z-index: 10;
    transform: translateX(-50%);
    background: radial-gradient(#fff 15%, #e6e6e1 60%);
}

.loader-road::before {
    content: "";
    position: absolute;
    top: 55%;
    left: 50%;
    width: 450px;
    height: 25px;
    background: linear-gradient(to bottom, #ddd 5%, transparent 80%);
    border-radius: 50%;
    transform: translateX(-50%);
}

.loader-cart {
    position: absolute;
    top: 52%;
    left: 50%;
    width: 450px;
    z-index: 20;
    transform: translateX(-50%);
}

.loader-cart img {
    animation: cart 2s;
    transform: translateX(400px);
}

.indicate-dot-item {
    position: absolute;
    z-index: 999;
}

#indicate {
    display: none;
}

.book {
    display: none;
    position: absolute;
    bottom: 55px;
    left: 0;
    width: 774px;
    height: 463px;
    padding: 0 10px 0 120px;
    box-sizing: border-box;
    background: url("../img/00/book_images/511.png") no-repeat center;
    background-size: 100%;
}

.book-item {
    display: none;
    position: relative;
    width: 100%;
    padding: 20px 20px 30px 20px;
    height: 463px;
    box-sizing: border-box;
    overflow: hidden;
    background: url("../img/00/book_images/img8.png") no-repeat top right;
}

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

.book-title span {
    margin-right: 20px;
    display: block;
    width: 76px;
    font-size: 22px;
    font-weight: bold;
    line-height: 50px;
    color: #fff;
    text-align: center;
    background: url("../img/00/book_images/img4.png") no-repeat;
}

.book-title b {
    display: block;
    font-size: 24px;
    line-height: 24px;
    letter-spacing: 10px;
    color: #333333;
}

.book-title b + b {
    margin-left: 5px;
    font-size: 16px;
    letter-spacing: 5px;
}

.book-page {
    position: absolute;
    bottom: 10px;
    right: 20px;
    display: flex;
    align-items: center;
    font-size: 12px;
    line-height: 12px;
    color: #666666;
    user-select: none;
}

.book-page span {
    display: block;
}

.book-page-num {
    margin-top: 2px;
}

.book-page-prev,
.book-page-next {
    margin: 0 6px;
    font-size: 20px;
    line-height: 20px;
    cursor: pointer;
}

.book-page-prev:hover,
.book-page-next:hover {
    color: #ff0000;
}

.book-cover {
    display: none;
    position: absolute;
    top: -154px;
    left: -236px;
    width: 186%;
}

.book-cover img {
    width: 100%;
}

.overview-content {
    margin-top: 20px;
}

.overview-item {
    display: none;
}

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

.overview-text img {
    width: 100%;
}

.overview-text p {
    display: block;
    font-size: 12px;
    line-height: 20px;
    color: #000;
    letter-spacing: 1px;
    text-indent: 2em;
}

.overview-p {
    flex: 1 0 0;
}

.course-content {
    display: flex;
}

.course-item {
    position: relative;
    width: 72px;
    text-align: center;
}

.course-item + .course-item {
    margin-left: calc(calc(100% - 360px) / 4);
}

#course .overview-item {
    width: 100%;
}

.course-text {
    position: relative;
    width: 72px;
    height: 84px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    font-weight: bold;
    line-height: 16px;
    color: #fff;
    background: url("../img/00/book_images/course1.png") no-repeat center;
    background-size: 100%;
}

.course-text::before {
    content: "";
    position: absolute;
    top: -39px;
    left: 50%;
    width: 2px;
    height: 40px;
    transform: translateX(-50%);
    background-color: #3c96d2;
}

.course-text::after {
    content: "";
    position: absolute;
    top: -45px;
    left: 50%;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    transform: translateX(-50%);
    background-color: #3c96d2;
}

.course-p {
    position: absolute;
    top: -110px;
    left: 50%;
    width: 180px;
    font-size: 12px;
    line-height: 20px;
    color: #000;
    transform: translateX(-50%);
}

.course-item:nth-of-type(2n) .course-text {
    background-image: url("../img/00/book_images/course2.png");
}

.course-item:nth-of-type(2n) .course-text::before {
    top: 100%;
    background-color: #c85096;
}

.course-item:nth-of-type(2n) .course-text::after {
    top: 145%;
    background-color: #c85096;
}

.course-item:nth-of-type(2n) .course-p {
    top: 140px;
}

.course-item:nth-of-type(5) .course-p {
    left: 34%;
    width: 190px;
}

.overview-content {
    padding: 0 35px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 350px;
}

.book-close {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 20px;
    height: 20px;
    font-size: 16px;
    line-height: 16px;
    color: #fff;
    cursor: pointer;
    user-select: none;
    background: #262a27;
}

.book-close:hover {
    background-color: #ff0000;
}

.book-close span {
    display: block;
    transform: rotate(45deg);
}

.book-nav {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: absolute;
    top: 50%;
    right: -25px;
    height: 410px;
    transform: translateY(-50%);
}

.book-nav span {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 30px;
    height: 76px;
    padding: 0 10px;
    font-size: 12px;
    line-height: 16px;
    color: #fff;
    cursor: pointer;
    user-select: none;
    box-sizing: border-box;
    border-top-right-radius: 5px;
    border-bottom-right-radius: 5px;
    background-color: #666666;
}

.book-nav span.active {
    background-color: #f00;
    transform: translateX(-5px);
}

@media screen and (max-width: 1200px) {
    .excessive video {
        height: auto;
    }
}

@keyframes fluctuate {
    0% {
        width: 0;
        height: 0;
        opacity: 1;
    }

    100% {
        width: 40px;
        height: 40px;
        opacity: 0;
    }
}

@keyframes cricle {
    0% {
        transform: translate(-50%, -50%) rotate(0);
    }

    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes cart {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(400px);
    }
}