@media (max-width: 640px) {
.head,
.foot{
    display: none;
}
.trunk_two,
.trunk_one,
.xydt_cen{
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}
.trunk{
    padding: 0 20px 30px;
}
.trunk_cen,
.xydt,
.xydt_lf,
.xydt_rig,
.xsdt{
    width: 100%;
}
.xydt_lf .bd li{
    height: 380px;
}
.xydt_lf .prev{
    left: 33%;
}
.xydt_lf .next{
    right: 33%;
}
.zxtz_cen .hd ul li{
    margin-right: 5px;
}
.ph-header{
    background-color: #098E2C;
    display: flex;
    flex-direction: row;
    width: 100%;
    height: 80px;
    align-items: center;
    justify-content: space-around;
}
.ph-logo{
    width: 75%;
}
.ph-logo img{
    height: 60px;
}
.hamburger{
    width: 32px;
    cursor: pointer;
}

/* 侧边栏 */
.sidebar {
    position: fixed;
    left: -250px;
    top: 0;
    width: 250px;
    height: 100%;
    background: #fff;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.2);
    transition: 0.3s;
    z-index: 99;
}

.sidebar.active {
    left: 0;
}

/* 关闭按钮 */
.close-btn {
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 24px;
    cursor: pointer;
}

/* 导航菜单 */
.nav-menu {
    padding: 0 10px;
}

.nav-item {
    position: relative;
    list-style: none;
    border-bottom: 1px solid #eee;
}

.nav-link {
    display: block;
    padding: 15px 0;
    color: #333;
    text-decoration: none;
    transition: 0.3s;
}

.arrow {
    position: absolute;
    right: 0;
    top: 15px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    transition: 0.3s;
}

.arrow::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    border: solid #666;
    border-width: 0 2px 2px 0;
    display: inline-block;
    padding: 3px;
    transform: translate(-50%, -50%) rotate(-45deg);
}

.arrow.active::before {
    transform: translate(-50%, -50%) rotate(45deg);
}

/* 二级菜单 */
.sub-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding-left: 15px;
}

.sub-menu.active {
    max-height: 200px;
}

/* 遮罩层 */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    display: none;
    z-index: 98;
}

.school_name {
    width: 100%;
    text-align: center;
}

.school_name p {
    color: #00000030;
    line-height: 40px;
    border-bottom: 1px solid #eee;
}
.ph-foot{
    display: block;
    width: 100%;
    background-color: #098E2C;
    padding: 30px 40px;
}
.ph-foot p{
    color: #fff;
    font-size: 16px;
    line-height: 32px;
    text-align: center;
}



.sp-lf,
.sp-title-rig{
    display: none !important;
}
.sp-rig{
    width: 100% !important;
    padding: 0 !important;
}
.section-inner{
    width: 100%;
    padding: 0 20px;
}
.sp-list li a{
    width: 75%;
}
.sp-imgitem a{
    height: auto !important;
}
.sp-imglist > li{
    width: 48%;
    height: auto !important;
    margin-right: 2%;
    margin-bottom: 20px;
}
.sp-imglist a{
    line-height: 22px;
}
.zxtz,
.gsgg,
.kycg{
    width: 100% !important;
}
}