body {
    margin: 0 auto;
    min-height: 100vh;
    max-width: 750px;
    width: 100%;
    position: relative;
    min-width: 350px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    font-family: "Microsoft YaHei", "微软雅黑", arial, sans-serif;
}



/* 装修知识列表分页导航 */
.pagination {
    display: inline-block;
    padding-left: 0;
    margin: 20px 0;
    border-radius: 4px;
}

.pagination>li {
    display: inline;
}

.pagination>li>a,
.pagination>li>span {
    position: relative;
    float: left;
    padding: 6px 12px;
    line-height: 1.42857;
    text-decoration: none;
    color: #337ab7;
    background-color: #fff;
    border: 1px solid #ddd;
    margin-left: -1px;
}

.pagination>li:first-child>a,
.pagination>li:first-child>span {
    margin-left: 0;
    border-bottom-left-radius: 4px;
    border-top-left-radius: 4px;
}

.pagination>li:last-child>a,
.pagination>li:last-child>span {
    border-bottom-right-radius: 4px;
    border-top-right-radius: 4px;
}

.pagination>li>a:hover,
.pagination>li>a:focus,
.pagination>li>span:hover,
.pagination>li>span:focus {
    z-index: 2;
    color: #23527c;
    background-color: #eeeeee;
    border-color: #ddd;
}

.pagination>.active>a,
.pagination>.active>a:hover,
.pagination>.active>a:focus,
.pagination>.active>span,
.pagination>.active>span:hover,
.pagination>.active>span:focus {
    z-index: 3;
    color: #fff;
    background-color: #337ab7;
    border-color: #337ab7;
    cursor: default;
}



/* 知识、案例详情内容布局 */
.content-limit {
    overflow: hidden;
}

.content-limit table,
.content-limit iframe {
    max-width: 100%;
    height: auto;
    width: 100%;
}

/* 仅让图片居中，不影响其他元素 */
.content-limit img {
    display: block;
    /* 使图片单独成行 */
    max-width: 100%;
    /* 限制宽度不超过容器 */
    height: auto;
    /* 保持原始比例 */
    margin-left: auto;
    /* 左外边距自动 */
    margin-right: auto;
    /* 右外边距自动 */
}



/* 页脚底部浮动导航菜单 */
.floating-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #fff;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 8px 0;
}

.nav-item {
    text-align: center;
}

.nav-link {
    color: #6c757d;
    font-size: 12px;
    padding: 5px;
}

.nav-link.active {
    color: #0d6efd;
}

.nav-icon {
    font-size: 20px;
    display: block;
    margin: 0 auto 3px;
}

/* 内容区域底部留白，防止被导航遮挡 */

body {
    padding-bottom: 60px;
}