.cs1 {
    background: url("../images/c1_bg.png") no-repeat center;
    position: relative;
    height: calc(100vh - 133px);
    display: flex;
    align-items: center;
    background-size: cover;
}
.cs1 .content {
    max-width: 120rem;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
}
.cs1 h1 {
    font-size: 5em;
    font-weight: bold;
    font-family: "Microsoft YaHei";
    color: #fff;
    line-height: 1.2;
    text-align: center;
}
.cs1 h2 {
    font-size: 2.8em;
    color: #fbff88;
    line-height: 1;
    text-align: center;
    margin: 3rem 0 5rem;
    font-weight: bold;
}
.cs1 a {
    width: 100%;
    max-width: 40em;
    height: 7em;
    background: #ffaa3d;
    border-radius: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 0 2.5rem;
}
.cs1 a p {
    font-size: 2.2em;
    font-weight: bold;
    color: #fff;
    letter-spacing: 0.3rem;
}
.cs1 a::after {
    display: none;
    content: "";
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 20px;
    border-color: transparent transparent transparent #fff;
    margin: 0 0 0 1.5em;
}
.cs1 a:hover {
    background: #ff703d;
}
.cs1 .cs1_header {
    width: 100%;
    height: 6rem;
    position: absolute;
    left: 0;
    top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem 0 2rem;
}
.cs1 .cs1_header a::after {
    content: none;
}
.cs1 .cs1_header a {
    width: auto;
    background: initial;
    border-radius: 0;
    max-width: initial;
    height: auto;
    justify-content: flex-start;
    margin: 0;
    color: #212529;
    font-size: 2em;
    font-family: "Arial";
    letter-spacing: 2px;
}
.cs1 .cs1_header a img {
    width: 14.5rem;
    height: 4rem;
}
.cs1_mb {
    display: none;
}
.Navbar {
    height: 6.5rem;
    background: #123d3c;
    position: sticky;
    top: 0;
    z-index: 999;
    margin: 0;
    padding-right: 1.5rem;
}
.Navbar::before {
    content: "";
    left: 0;
    width: 30%;
    position: absolute;
    top: 0;
    height: 100%;
    background: #4ad4b3;
}
.Navbar .navbar-scroll {
    background: #123d3c;
    height: 100%;
    width: 100%;
    max-width: 120rem;
    margin-left: auto;
    margin-right: auto;
    padding-right: 0;
    padding-left: 0;
    position: relative;
    z-index: 999;
}
.Navbar .navbarContent {
    width: 100%;
    height: 100%;
    display: flex !important;
    flex-basis: auto;
    flex-grow: 1;
    align-items: center;
    justify-content: center;
}
.Navbar ul {
    width: 100%;
    max-width: 120rem;
    display: flex;
    align-items: center;
    height: 100%;
}
.Navbar li {
    display: flex;
    align-items: center;
    padding: 0 0.5em 0 3.5em;
    height: 100%;
}
.Navbar a {
    display: flex;
    align-items: center;
    font-size: 1.6rem;
    font-weight: bold;
    color: #fff;
    padding: 0.5rem 1rem;
    cursor: pointer;
    line-height: 1.2;
}
.Navbar li a.start {
    color: #4ad4b3;
}
.Navbar .navbar-expand-lg .navbar-toggler {
    display: none;
}
@media screen and (max-width: 1024px) {
    .cs1 {
        font-size: calc(1vw + 1vh + 0.5vmin) !important;
    }
    .cs1 {
        background: url("../images/c1_bgmb.png") no-repeat center;
        margin: 65px 0 0;
    }

    .cs1 .cs1_header {
        display: none;
    }
    .cs1 .content {
        padding: 9.8rem 2rem 10rem;
    }
    .cs1 h1 {
        font-size: 2.12em;
    }
    .cs1 h2 {
        font-size: 1.8rem;
        line-height: 1.4;
    }
    .cs1 a{
        height: 5rem !important;
        position: relative;
        max-width: 28rem !important;
    }
    .cs1 a p{
        font-size: 1.6rem !important;
    }
    .cs1 a::after {
        display: block ;
        content: "";
        width: 0;
        height: 0;
        border-style: solid;
        border-width:  6.5px 0 6.5px 13px !important;
        border-color: transparent transparent transparent #fff;
        margin: 0 0 0 1.5em;
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translate(0,-50%);
    }
    .cs1 img {
        display: block;
        width: 80%;
        /* width: 65rem;
        height: 28rem; */
    }
    .Navbar {
        width: 100%;
        position: fixed;
        padding: 0;
    }
    .Navbar .navbarlogo {
        /* width: 100%; */
        /* max-width: 18em; */
        height: 100%;
        background: #123d3c;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .Navbar .navbarlogo img {
        width: 98px;
    }
}
@media screen and (max-width: 768px) {
    .cs1 .cs1_mb {
        display: block;
    }
    .Navbar .navbarContent {
        width: 100%;
        max-width: 360px;
        margin: 0 auto;
        flex-direction: column;
        align-items: flex-start;
    }
    .Navbar .navbar-expand-lg .navbar-collapse {
        width: 100%;
        max-width: 33rem;
        margin: 0 auto;
    }
    .Navbar ul {
        justify-content: space-between;
    }
    .Navbar li {
        padding: 0;
    }
    .Navbar a {
        font-size: 1.3rem;
        padding: 0.5rem 0.3rem;
    }
}