:root {
    font-family: Arial, "Microsoft YaHei", sans-serif;
    color: #1d3436;
    background: #eef4f3;
}
* { box-sizing: border-box; }
body {
    min-height: 100vh;
    margin: 0;
    background: radial-gradient(circle at 0 0, #dff3ef 0, transparent 36%), radial-gradient(circle at 100% 100%, #dcefeb 0, transparent 30%), #eef4f3;
}
#app {
    width: min(760px, calc(100% - 32px));
    margin: 7vh auto 48px;
}
#centerdiv {
    overflow: hidden;
    border: 1px solid #d7e6e4;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 18px 46px rgba(20, 72, 70, .13);
}
.layui-tab-card { border: 0; }
.layui-tab-card > .layui-tab-title {
    display: flex;
    height: 62px;
    padding: 0 14px;
    border: 0;
    background: linear-gradient(110deg, #103035, #176f69);
}
.layui-tab-card > .layui-tab-title li {
    flex: 1;
    height: 62px;
    padding: 0 12px;
    border: 0;
    color: #c6e4e0;
    font-size: 14px;
    line-height: 62px;
    text-align: center;
    cursor: pointer;
}
.layui-tab-card > .layui-tab-title .layui-this {
    background: rgba(255,255,255,.13);
    color: #fff;
    font-weight: 700;
}
.layui-tab-content { padding: 34px 42px 40px; }
.layui-form-item { margin-top: 19px; }
.layui-form-label { width: 108px; color: #567074; font-size: 13px; font-weight: 700; }
.layui-input-block { margin-left: 108px; }
.layui-input {
    display: block;
    width: 100%;
    height: 42px;
    padding-left: 13px;
    border: 1px solid #d4e2e0;
    border-radius: 7px;
}
.layui-btn {
    height: 40px;
    padding: 0 20px;
    border: none;
    border-radius: 7px;
    background: linear-gradient(100deg, #137b76, #159a8f);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}
.layui-tab-item { display: none; }
.layui-tab-item.layui-show { display: block; }