/* introduce */
.introduce {
    display: flex; 
    flex-wrap:nowrap; 
    justify-content: space-evenly; 
    padding-bottom: 40px;
}
.introduce div{
    width: 8%;
}
.introduce div img{
    width: 100%;
}
@media (max-width: 767px){
    .introduce div{
        width: 15%;
    }
}
/* introduce */

/* --------- footer ----------- */
footer {
    padding: 40px 20px;

}

footer .footer-logo Img{
    height:50px;
}

.footer-container {
    /* max-width: 1200px; */
    margin: 0 auto;
    text-align: left;
    margin: 0px 20px;
}

.logo-column {
    width: 35%; /* foot a size: ------*/
    /* border-right: 1px solid rgb(220, 221, 218); */
}

.footer-column ul {
    list-style: none;
    padding-left: 0;
}

.footer-column ul li {
    margin-bottom: 10px;
    color: #666;
    font-size: 14px;
}

.footer-column p {
    color: #666;
    font-size: 14px;
}

.logo-column img {
    height: 50px;
    margin-bottom: 10px;
}

.logo-column ul {
    margin: 0px 0px 0px 35px;
}

.social-column {
    margin-top: 35px;
    width: 15%; /* foot a size: ------*/
    /* border-right: 1px solid rgb(220, 221, 218); */
}

.social-icons-desktop {
    display: flex;
    gap: 13px;
    flex-direction: column;
    border-left: 1px solid rgb(220, 221, 218);
    height: 100%;
}

.social-icons a{
    text-decoration: none; /* 移除底線 */
    display: flex; 
    align-items: center;
}

.social-icons img {
    width: 24px;
    height: 24px;
}

.line-column {
    width: 15%;
    margin-top: 35px;
    text-align: center;
    border-left:1px solid rgb(220, 221, 218);
}

.line-column img{
    width:130px;
}

.contact-column {
    margin-top: 35px;
    width: 35%; /* foot a size: ------*/
    align-content: center;
    text-align: center;
    /* border-left: 1px solid rgb(220, 221, 218); */
}

.contact-column img{
    width:360px;
    padding-left: 10px;
}


.com_title{
    text-align: center;
    
}

.com_title .en{
    font-size: 35px;
    letter-spacing: 0;
    color:white;
}

.com_title .ch{
    font-size: 14px;
    letter-spacing: 0.14em;
    margin-top: 12px;
    color:white;
}

.social-icons-mobile {
    display: none;
}

.contact-column{
    margin-left: 10px;
    border-left: 1px solid rgb(220, 221, 218);
}

@media (max-width: 768px) {
    .footer-container{
        flex-direction: column;
        text-align: center;
        margin: 0px;
    }

    .footer-logo{
        justify-content: center;
    }

    .logo-column{
        width: 100%;
        margin-top: 30px;
    }

    .social-column{
        width: 100%;
        border-right: none;
    }

    .contact-column{
        margin-left: 0px;
        width: 100%;
        border-left: none;
    }

    .social-icons a{
        display: block;
        padding-left: 0px;
    }

    .social-icons{
        border:none;
    }

    .line-column{
        display: flex;
        justify-content: space-around;
        align-items: center;
        width: 100%;
        border: none;
    }

    .footer-column img{
        border: none;
    }

    .footer-column{
        border-bottom: 1px solid rgb(220, 221, 218) ;
        padding-bottom: 8%;
    }

    .social-icons-desktop{
        display: none;
    }

    .social-icons-mobile {
        display: flex;
        justify-content: center;
        gap: 30px;
        flex-wrap: wrap;
    }
    .social-icons-mobile div,.social-icons-mobile a {
        flex: 0 0 calc(33.33% - 20px); /* 每个图标占据33.33%宽度，减去间距 */
        max-width: calc(33.33% - 20px); /* 确保最大宽度 */
        box-sizing: border-box; /* 包括padding和border在内的总宽度 */
    }
    .social-icons-mobile a {
        display: block; /* 使图片成为块级元素 */
        margin: 0 auto; /* 自动左右边距，使其居中 */
        max-width: calc(100% - 40px); /* 最大宽度减去40px（左右各20px） */
        height: auto; /* 保持高度自适应 */
    }
    
    .contact-column a img{
        width:360px;
        padding-left: 0px;
    }
}