* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a {
    text-decoration: none;
    color: inherit;
}

body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.6;
    color: #000;
    background: url('../img/bg.png') no-repeat center center;
    background-size: 100%;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Banner 区域 */
.banner {
    width: 100%;
    position: relative;
}

.banner img {
    width: 100%;
    height: auto;
    display: block;
}


/* 主要内容区域 */
.main-content {
    padding: 60px 0;
}

/* 书籍展示区 */
.book-section {
    display: flex;
    /* align-items: center; */
    gap: 30px;
}

.book-image {
    flex: 0 0 45%;
    position: relative;
}

.book-image .hd ul{
    text-align: center;
}
.book-image .hd ul li {
    display: inline-block;
    margin-right: 5px;
    cursor: pointer;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ccc;
}

.book-image .hd ul li.on {
    background: #b41a22;
}

.book-image .bd li{
    display: block;
}
.book-image .bd li img {
    max-height: 300px;
    width: 100%;
}

.book-image .bd p {
    text-align: center;
    line-height: 2;
    font-size: 16px;
    font-weight: bold;
}

.book-list {
    flex: 1;
    padding-left: 20px;
    position: relative;
    width: calc(55% - 30px);
}

.book-list ul {
    list-style: none;
}

.book-list li {
    padding: 15px 0;
    border-bottom: 1px solid #eee;
    font-size: 18px;
    color: #000;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.book-list li a {
    color: inherit;
    text-decoration: none;
}

.book-list li:hover {
    color: #d35400;
}

.book-list li:last-child {
    border-bottom: none;
}

.book-list li::before {
    content: '•';
    margin-right: 8px;
    color: #ccc;
}

.more-link {
    color: #d35400;
    font-size: 14px;
    text-decoration: none;
    background: #fce3cc;
    width: fit-content;
    padding: 3px 8px;
    border-radius: 8px;
    position: absolute;
    right: 20px;
    z-index: 1;
}


/* 三个卡片区域 */
.cards-section {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin: 40px 0 40px;
}

.card {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}


/* 学习动态区域 */
.learning-dynamics {
    padding: 30px 0;
    position: relative;
}

.section-title {
    margin-bottom: 30px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dynamics-content {
    display: flex;
    gap: 40px;
}

.dynamics-column {
    flex: 1;
}

.dynamics-column ul {
    list-style: none;
}

.dynamics-column li {
    /* padding: 15px 0; */
    font-size: 18px;
    position: relative;
    padding-left: 20px;
    height: 70px;
}

.dynamics-column li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #ccc;
}

/* 页脚区域 */
.footer {
    background: #e0e0e0;
    border-top: 1px solid #ccc;
    height: auto;
    padding: 30px 0 30px;
    overflow: hidden;
}
.footer .footM{
    max-width: 800px;
    margin: 0 auto;
}
.footer *{
    color: #000;
    font-size: 16px;
    line-height: 2;
}
.fl{
    float: left;
}
.fr{
    float: right;
}
.ml80{
    margin-left: 80px;
}
.ml70{
    margin-left: 70px;
}
.ml20{
    margin-left: 20px;
}
.mfooter{
    display: none;
    text-align: center;
    padding: 20px 0;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-content{
        padding: 10px;
    }
    .book-section {
        flex-direction: column;
    }

    .book-image {
        flex: 0 0 100%;
    }
    .book-list{
        flex: 1;
        width: 100%;
    }
    
    .cards-section {
        flex-direction: column;
    }

    .card {
        height: 150px;
        font-size: 16px;
    }
    .section-title img{
        width: 300px;
    }
    .dynamics-content {
        flex-direction: column;
        gap: 20px;
    }
    .dynamics-column li{
        padding: 10px 10px 10px 20px;
    }

    .footer{
        display: none;
    }
    .mfooter{
        display: block;
        background: #e0e0e0;
    }
}

.Voice-Voicer-Container{ 
    margin-left: 600px !important;
}