body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    overflow-y: scroll;
    user-select: none;
    width: 100%;
    background-color: rgb(214, 232, 238);
    /* perspective: 20rem; */
}

/* 滚动条 */
/* 滚动条整体部分，可以设置宽度 */
::-webkit-scrollbar {
    width: 0.5rem;
    height: 0.5rem;
}

/* 滚动条两端的按钮 */
::-webkit-scrollbar-button {
    display: none;
}

/* 外层轨道 */
:-webkit-scrollbar-track {
    background-color: black;
}

/* 内层滚动槽 */
::-webkit-scrollbar-track-piece {
    background-color: rgba(129, 129, 129, 0.3);
}

/* 滚动的滑块 */
::-webkit-scrollbar-thumb {
    background-color: rgb(0, 153, 255);
}

/* ======================= 图片 ======================= */
.img-main {
    width: 100%;
    height: 100%;
}

.img-panel {
    width: 55rem;
    height: 35rem;
    border-radius: 1rem;
    box-shadow: rgba(0, 0, 0, 0.8) 0 0 0.8rem;
}

/* ======================= 文字 ======================= */
.text-big-white {
    color: white;
    font-size: 3.5rem;
    letter-spacing: 0.1rem;
}

.text-mid-white {
    color: white;
    font-size: 1.2rem;
    /* font-weight: 600; */
    letter-spacing: 0.1rem;
}

.text-small-white {
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.1rem;
}

.text-big-black {
    color: rgb(36, 37, 37);
    font-size: 3rem;
    letter-spacing: 0.1rem;
}

.text-mid-black {
    color: rgb(37, 41, 41);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.1rem;
}

.text-mid-gray {
    color: rgb(104, 103, 103);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.1rem;
}

/* ======================= 布局 ======================= */
.top-banner {
    width: 100%;
    display: flex;
}

.main-title {
    color: rgb(11, 72, 102);
    font-size: 2.5rem;
    letter-spacing: 0.2rem;
    padding: 2rem 15rem;
}

.menu {
    display: flex;
    padding: 3rem 0rem;
    margin-left: 10rem;
}

.menu-btn {
    color: rgb(111, 118, 122);
    font-size: 1.3rem;
    letter-spacing: 0.2rem;
    margin-right: 2rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.menu-btn:hover {
    color: rgb(0, 153, 255);
    transform: scale(1.1);
}

.btn-choosen {
    color: rgb(0, 153, 255);
}

.panel-main {
    width: 100%;
    height: 45rem;
    overflow: hidden;
}

.panel-main .text-bg {
    position: absolute;
    width: 100%;
    height: 45rem;
    background-color: rgba(6, 26, 49, 0.5);
    backdrop-filter: blur(1rem);
}

.text-main {
    position: absolute;
    top: 15rem;
    left: 10rem;
    z-index: 99;
}

.text-main .text-mid-white {
    margin-top: 1rem;
    width: 30rem;
    line-height: 2rem;
    text-indent: 2rem
}

.panel {
    display: flex;
    padding: 8rem 5rem;
}

.panel-texts {
    width: 50%;
    margin: 5rem 0 0 8rem;
}

.panel-texts .text-mid-black {
    margin-top: 2rem;
    line-height: 2rem;
}

.panel-bottom {
    width: 100%;
    height: 20rem;
    background-color: rgb(96, 118, 133);
    padding-top: 5rem;
    display: flex;
    margin-top: 3rem;
}

.panel-bottom .text-connect {
    margin-left: 5rem;
}

.panel-bottom .QRcode {
    width: 10rem;
    height: 10rem;
    margin-left: 50rem;
    border-radius: 0.5rem;
    box-shadow: black 0 0 0.5rem;
    border: white solid 0.2rem;
}

/* ====================== 4张图片排列 =========================== */
.panel-pics {
    display: flex;
    margin: 0 5rem;
    margin-top: 3rem;
}

.panel-pics .box-pic {
    width: 35rem;
    height: 21rem;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: black 0 0 0.5rem;
}

.panel-pics .box-pic .pic {
    width: 100%;
    height: 100%;
}

.panel-pics .box-pic .text {
    position: relative;
    background-color: rgba(7, 26, 43, 0.63);
    padding: 1rem;
    top: -3.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.1rem;
    color: rgb(255, 255, 255);
}

.panel-pics .panel-pics-left>div {
    margin-bottom: 1rem;
}

.panel-pics .panel-pics-right {
    margin-left: 2rem;
}

.panel-pics .panel-pics-right .box-pic {
    width: 72rem;
    height: 43rem;
}

.panel-pics-2 .box-pic {
    width: 53.5rem;
    height: 32rem;
    margin-right: 2rem;
}

/* ======================= 企业简介 ======================= */
.img-zhengshu {
    position: absolute;
    width: 80rem;
    top: 12rem;
    right: 3rem;
    z-index: 99;
    filter: drop-shadow(black 0 0 0.5rem);
}

/* ======================= 项目案例 ======================= */
.pic-big {
    width: 109rem;
    margin: 3rem 5rem;
    filter: drop-shadow(rgba(0, 0, 0, 0.8) 0 0 0.5rem);
}
.panel-main .btns{
    position: absolute;
    top: 15rem;
    left: 15rem;
    z-index: 99;
}
.service-content{
    position: absolute;
    width: 68rem;
    height: 40rem;
    z-index: 99;
    top: 10rem;
    right: 10rem;
    box-shadow: rgba(0, 0, 0, 0.6) 0 0 1rem;
    border-radius: 0.5rem;
}
/* ======================= 服务内容 ======================= */
.btn-panel{
    color: white;
    font-size: 1.5rem;
    margin-bottom: 5rem;
    font-weight: 600;
    background-color: rgba(0, 204, 255, 0.5);
    text-shadow: black 0 0 0.5rem;
    border-radius: 0.3rem;
    padding: 0.5rem 1rem;
    letter-spacing: 0.1rem;
    box-shadow: rgba(0, 0, 0, 0.5) 0 0 0.5rem;
    cursor: pointer;
}
.btn-panel:hover{
    background-color: rgb(0, 204, 255);
}
.btn-panel-choosen{
    background-color: rgb(0, 204, 255);

}
/* ======================= 联系我们 ======================= */
.panel-main .QRcode {
    width: 10rem;
    height: 10rem;
    margin-top: 3rem;
    border-radius: 0.5rem;
    box-shadow: black 0 0 0.5rem;
    border: white solid 0.2rem;

}

.img-map {
    width: 50rem;
    height: 32rem;
    position: absolute;
    top: 15rem;
    right: 10rem;
    border-radius: 0.5rem;
    box-shadow: black 0 0 0.5rem;
}