html, body {
    overflow-x: hidden;
    margin: 0;
    padding: 0;
    font-family: 'SourceHanSansSC-Heavy', Arial, sans-serif;;
}
.tothetop{
  width: 100%;
  height: 90px;
}
.allcontainerbox,
.container,
.containertwo {
    max-width: 100%;
    box-sizing: border-box;
}
.navcontainer {
    background: #ffffff;
    padding: 0;
    margin: 0;
    width: 100%;
    position: fixed;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    z-index: 9999;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 80%;
    margin: 0 auto;
    height: 90px;
}

.navbar-logo {
    height: 100%;
    cursor: pointer;
    padding: 10px 0;
    box-sizing: border-box;
}

.navbar-logo img {
    height: 100%;

}

.navbar-menu {
    display: flex;
    align-items: center;
    height: 100%;
}

.langbox img {
    width: 24px;
    height: 24px;
}

.navmenubox {
    display: flex;
    align-items: center;
    gap: 18px;
    height: 100%;
}

.navmenuitem {
    text-decoration: none;
    color: #222;
    font-size: 16px;
    padding: 0 8px;
    transition: color 0.2s;
    font-weight: 600;
    height: 100%;
    display: flex;
    align-items: center;
}

.navmenuitem:hover {
    cursor: pointer;
    color: #2b8c85;
}

.langbox,
.quotebox {
    display: flex;
    align-items: center;
    height: 100%;
}

.quotebox a {
    text-decoration: none;
    display: inline-block;
    padding: 12px 18px;
    border-radius: 10px;
    background: linear-gradient(to right, #2b8c85, #38b13b);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: background 0.3s, box-shadow 0.3s, filter 0.3s;
    box-shadow: 0 2px 8px rgba(43, 140, 133, 0.08);
}

.quotebox a:hover {
    background: linear-gradient(to right, #38b13b, #2b8c85);
    filter: brightness(1.08);
    box-shadow: 0 4px 16px rgba(56, 177, 59, 0.15);
}

.pronavmenuitem-wrapper {
    position: relative;
    display: inline-block;
    height: 100%;
}

.pronavmenuitem-wrapper a {
    height: 100%;
}

.prosubmenu {
    display: none;
    position: fixed;
    margin-top: 90px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #fff;
    border: 1px solid #ddd;
    list-style-type: none;
    padding: 0;
    min-width: 150px;
    z-index: 9999;
    width: 70%;

}

.prosubmenu li {
    padding: 10px;
}

.prosubmenubox {
    display: flex;
    flex-wrap: wrap;
    gap: 20px 1%;
    justify-content: space-between;
    padding: 10px;
}

.prosubmenuitem {
    width: 32.5%;
    display: flex;
    cursor: pointer;
    padding: 10px;
    box-sizing: border-box;
    transition: color 0.5s;

}

.prosubimgbox {
    width: 100px;
}

.prosubimgbox img {
    width: 100%;
}
.prosubtitle{
    text-transform: uppercase;
}

.prosubtitlebox {
    display: flex;
    align-items: center;
    margin-left: 20px;
}

.prosubmenu li a {
    color: #333;
    text-decoration: none;
    display: block;
}

.prosubmenuitem:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}



 .navmenuitem-wrapper {
    position: relative;
    display: inline-block;
    height: 100%;

}

 .submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: -50%;
    background-color: #fff;
    border: 1px solid #ddd;
    list-style-type: none;
    padding: 0;
    margin: 0;

    z-index: 1;
}
.aboutsubmenu{
    text-align: center;
    text-transform: uppercase;
}


.submenu li {
    padding: 13px;
    white-space: nowrap;
}
.submenu li:hover{
    background-color: #2b8c85;
    color: #f1f1f1;
}
.submenu li:hover a{
    color: #f1f1f1;
}


.submenu li a {
    color: #333;
    text-decoration: none;
    display: block;
} 

.navmenuitem-wrapper:hover .submenu {
    display: block;
}


.sm-navmenubox {
    text-align: center;
    cursor: pointer; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    width: 45px;
    height: 45px;
    border: 2px solid #2b8c85;
    display: none;
    border-radius: 5px;
    padding: 7px;
    box-sizing: border-box;
}
.menu-icon {
    width: 27px; 
    height: 27px; 
    fill: #222;
}

.sm-dropdown-menu {
    display: none; 
    position: absolute;
    background-color: #fff;
    border: 1px solid #ddd;
    width: 330px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    z-index: 10000;
    top: 70px;
    right: 0;
}

.sm-dropdown-menu a {
    color: #222;
    padding: 12px 16px;
    text-decoration: none;
    font-weight: 600;
    display: block;
}

.sm-dropdown-menu a:hover {
    background-color: #f1f1f1;
}

.sm-dropdown-menu.show {
    display: block; /* 显示下拉菜单 */
    
}
.smsubmenu{
    padding: 0;
    display: none;
    margin: 0;
}
.smsubmenu li {
    list-style-type: none; 
}
.smsubmenu li a{
    padding: 6px 24px;
    font-weight: 400;
}
.smnavmenuitem-wrapper:hover .smsubmenu {
    display: block;
}

/* ... 已有代码 ... */

@media screen and (max-width: 1690px) {
    .navmenubox {
        gap: 5px;
    }

    .langbox {
        margin: 0 10px 0 5px;
    }

}
@media screen and (max-width: 1580px) {
    .navmenubox {
        gap: 3px;
    }


}

@media screen and (max-width: 1550px) {
    .navbar-logo {
        height: 90%;
    }


}

@media screen and (max-width: 1510px) {
    .quotebox a {
        padding: 8px 8px;
    }

    .navbar {
        height: 70px;
    }
.prosubmenu{
    margin-top: 70px;
}
.tothetop {
    height: 70px;
}


}

@media screen and (max-width: 1400px) {
    .navbar {
        width: 85%;
    }

    .navbar-logo {
        height: 81%;
    }



}

@media screen and (max-width: 1300px) {
    .navbar {
        width: 90%;
    }
    .navmenuitem{
        padding: 0 5px;
    }



}

@media screen and (max-width: 1200px) {
    .navbar {
        width: 99%;
    }
    .navmenubox{
        display: none;
    }
    .sm-navmenubox{
        display: block;
    }




}