body,
ul,
li {
    padding: 0;
    margin: 0;
    list-style: none;
}

.biaoti {
    position: fixed;
    width: 100%;
    background-color: #2D4E30;
    display: flex;
    justify-content: center;
    padding: 0;
    padding-right: 100px;
    margin: 0;
}

img {
    width: 5%;
    padding-bottom: 12px;
}

ul {
    height: 60px;
}

ul.biaoti {
    background-color: #2D4E30;
    z-index: 10;
}

ul.biaoti li {
    display: inline-block;
    padding: 20px;
    white-space: nowrap;
}

ul.biaoti li a {
    text-decoration: none;
    color: #fff;
    font-weight: bold;
}

ul.biaoti li:hover {
    background-color: #3f6b42;
}

div.logo {
    margin-top: 20px;
    margin-left: 100px;
}

h5 {
    display: inline-block;
    font-size: 22px;
    color: #fff;
    padding: 0;
    margin: -5px;
    margin-bottom: 12px;
}

div.logo {
    margin-top: 20px;
    margin-left: 100px;
}

.up {
    margin-top: 92px;
}

.up h2 {
    color: #fff;
    font-size: 4vw;
    /* 使用视窗宽度单位 */
    text-align: center;
    line-height: 1.8;
}

.down {
    margin-top: 270px;
    /* 替代绝对定位 */
    text-align: center;
}

.down .iconfont {
    font-size: 4rem;
    display: block;
    margin-bottom: 10px;
}

.down p {
    color: #fff;
    font-size: 2rem;
}

.picture {
    gap: 30px 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin: 20px 0px;
    margin-top: 75px;
}

.picture2 {
    gap: 30px 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin: 20px 0px;
}

.picture3 {
    gap: 30px 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin: 20px 0px;
}

.picture .white {
    width: 100%;
    /* 网格项会自动填充其所在单元格的宽度 */
    height: auto;
    /* 高度根据内容自动调整 */
    background-color: #ffffff;
}

.picture .green {
    background-color: #185433;
    width: 100%;
    /* 网格项会自动填充其所在单元格的宽度 */
    height: auto;
    /* 高度根据内容自动调整 */
    position: relative;
    padding: 20px;
}

@media (max-width: 768px) {
    .picture {
        grid-template-columns: 1fr;
        /* 在小屏幕设备上变为单列 */
    }
}

.tupian1 {
    object-fit: cover;
}

.banwei {
    background-color: #fff;
    width: 100%;
    margin: 0;
    padding: 0;
    margin-top: 30px;
    text-align: center;
    align-items: center;
}

.banwei p {
    margin: 0;
    padding: 0;
}

.banwei p a {
    font-size: 12px;
    text-decoration: none;
    color: black;
    margin: auto;
    margin: 0;
    padding: 0;
}

#page5 {
    height: 62px;
    flex-direction: column;
}

.banxin {
    width: 80%;
    text-align: center;
}

.green img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.white p {
    font-size: 16px;
    color: #000;
    line-height: 30px;
}

.white .dazi {
    margin-top: 50px;
    font-size: 26px;
    color: #000;
    font-weight: bolder;
}

.white img {
    width: 120px;
    margin-left: -370px;
}

.anniu {
    display: grid;
    width: 80px;
    height: 40px;
    background-color: #2D4E30;
    margin: 10px auto;
    border-radius: 20px;
    align-items: center;
}

.anniu {
    color: #fff;
    font-size: 16px;
}

.text-mask {
    visibility: hidden;
    /* 默认隐藏遮罩，但不占用空间 */
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 1);
    /* 半透明黑色背景 */
    color: white;
    text-align: center;
    line-height: 200px;
    /* 垂直居中文字 */
    font-size: 12px;
}

.tanchuang {
    width: 80%;
    line-height: 30px;
}