/* reset home */.left_menu {    width: 200px;    padding: 0;    vertical-align: top;    background: #f8f9fa;    border-right: 1px solid #e8e8e8;}.left_menu ul {    list-style: none;    margin: 0;    padding: 0;}.left_menu_li {    border-bottom: 1px solid #eee;    transition: all 0.2s ease;}.left_menu_li:last-child {    border-bottom: none;}.left_menu_li a {    display: block;    padding: 14px 20px;    font-size: 15px;    color: #333;    text-decoration: none;    position: relative;}.left_menu_li a:hover {    background: #1a73e8;    color: #fff;    padding-left: 28px;}.left_menu_li a:hover::before {    content: '';    position: absolute;    left: 14px;    top: 50%;    transform: translateY(-50%);    width: 4px;    height: 16px;    background: #fff;    border-radius: 2px;}.left_menu_li[id] a[href*="licheng.html"] {    background: #1a73e8;    color: #fff;    font-weight: bold;}.left_box {    border: 1px solid #e8e8e8;    border-radius: 4px;    margin-left: 20px;    padding: 30px;    min-height: 500px;}.left_box .pos {    color: #999;    font-size: 13px;    margin-bottom: 20px;    padding-bottom: 15px;    border-bottom: 1px dashed #e0e0e0;}.left_box .pos a {    color: #666;}.left_box .pos a:hover {    color: #1a73e8;}@media (max-width: 768px) {    .left_menu {        width: 100%;        display: block;        border-right: none;        border-bottom: 1px solid #e8e8e8;    }    .left_menu ul {        display: flex;        flex-wrap: wrap;    }    .left_menu_li {        flex: 1 1 auto;        border-bottom: none;    }    .left_menu_li a {        padding: 10px 12px;        font-size: 13px;        text-align: center;    }    .left_box {        margin-left: 0;        padding: 15px;    }}