.gameGuide{
    position: relative;
    background: #f8f8f8;
}
.gameGuide-section{
    width: 1400px;
    margin: 0 auto ;
    min-height: calc(100vh - 150px);
    padding-top: 40px;
    padding-bottom: 80px;
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

/* Tab 容器 */
.gameGuide-tabs{
    width: 100%;

    display: flex;
    margin-bottom: 30px;
}

.gameGuide-tab{
    cursor: pointer;
    border: none;
    /* transition: all 0.3s; */
    width: 214px;
    height: 92px;
    background: url(../images/gameGuide-btn.png) no-repeat;
    color: transparent;
    text-indent: -9999px;
    overflow: hidden;
}
.gameGuide-tab:nth-child(2){
    background-position-x: -214px;
}
.gameGuide-tab:nth-child(3){
    background-position-x: -428px;
}
.gameGuide-tab:nth-child(4){
    background-position-x: -642px;
}
.gameGuide-tab:nth-child(5){
    background-position-x: -856px;
}
.gameGuide-tab:nth-child(6){
    background-position-x: -1070px;
}


.gameGuide-tab.active{
    background-position-y: -92px;
}

/* Tab 内容区 */
.gameGuide-content{
    width: 100%;
    display: none;
}

.gameGuide-content.active{
    display: block;
}

.gameGuide-content-inner{
    display: flex;
    gap: 30px;
}

/* 左侧树状结构 */
.gameGuide-tree{
    width: 220px;
    flex-shrink: 0;
}

.tree-level-1{
    margin-bottom: 10px;
}

.tree-level-1-item{
    height: 44px;
    line-height: 44px;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    color: #808080;
    font-size: 24px;
    padding-left: 45px;
}

.tree-level-1-item.active{
    color: #9c825e;
    font-weight: bold;
}



.tree-level-1-item.expanded{
    background: url('../images/problem-icon-bg.png') no-repeat;
    color: #9c825e;
    font-weight: bold;
}

.tree-level-2{
    margin-left: 50px;
    margin-top: 5px;
}

.tree-level-2-item{
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
    color: #808080;
    font-size: 20px;
    padding-left: 25px;
    height: 30px;
    line-height: 30px;
    margin: 5px 0;
}

.tree-level-2-item.expanded{
}

.tree-level-2-item.expanded .tree-icon{
    transform: rotate(0deg);
}

.tree-icon{
    transition: transform 0.3s;
}

.tree-level-3{
    margin-left: 20px;
    margin-top: 5px;
}

.tree-level-3-item{
    padding:5px 20px;
    cursor: pointer;

    margin-bottom: 3px;
    font-size: 14px;
    color: #808080;
    transition: all 0.3s;
}

.tree-level-3-item.active{
    color: #9c825e;
    font-weight: bold;
}
.tree-level-2-item.article.active{
    color: #9c825e;
    font-weight: bold;
}
.tree-level-2-item.active{
    color: #9c825e;
    font-weight: bold;
}

/* 右侧内容区 */
.gameGuide-main{
    flex: 1;
    height: 1100px;
    overflow-y: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.gameGuide-main .content-image:nth-last-child(2){
    width: 60%;
    height: auto;
}
.content-image{
    width: 100%;
    margin-bottom: 20px;
}

.content-image img{
    width: 100%;
    height: auto;
}

.content-title{
    font-size:40px;
    color: #000;
    margin-bottom: 15px;
}

.content-subtitle{
    font-size: 24px;
    color: #000;
    margin-bottom: 20px;
}

.content-text{
    font-size: 16px;
    line-height: 1.8;
    color: #000;
    text-align: justify;
}


.back{
    position: absolute;
    bottom:400px;
    right: 180px;
}