.trademark_part{
    width: 100%;
    background: #ffffff;
    box-sizing: border-box;
    padding: 80px 0;
}
.trademark_title{
    text-align: center;
    margin-bottom: 40px;
}
.trademark_title>p:first-child{
    color: #515151;
    font-size: 35px;
    margin-bottom: 15px;
}
.trademark_title>p:nth-child(2){
    color: #999;
    font-size: 18px;
}
.trademark_container{
    width: 1200px;
    margin: 0 auto;
}
.trademark_search_box{
    background: #F8F8F8;
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 30px;
}
.trademark_search_input{
    display: flex;
    display: -webkit-flex;
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
}
.trademark_search_input>input{
    flex: 1;
    height: 45px;
    border: 1px solid #ddd;
    border-radius: 6px 0 0 6px;
    padding: 0 20px;
    font-size: 14px;
    outline: none;
}
.trademark_search_input>input:focus{
    border-color: #388BF7;
}
.trademark_search_input>a{
    display: block;
    width: 100px;
    height: 45px;
    line-height: 45px;
    text-align: center;
    background: linear-gradient(to right, #388BF7, #2C73F6);
    color: #ffffff;
    font-size: 15px;
    border-radius: 0 6px 6px 0;
    cursor: pointer;
}
.trademark_search_input>a:hover{
    opacity: 0.9;
}
.trademark_tip{
    text-align: center;
    color: #999;
    font-size: 12px;
    margin-top: 15px;
}
.trademark_list{
    display: flex;
    display: -webkit-flex;
    flex-wrap: wrap;
    gap: 20px;
}
.trademark_item{
    width: calc(25% - 15px);
    background: #F8F8F8;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s;
}
.trademark_item:hover{
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.trademark_item_header{
    padding: 15px;
    display: flex;
    display: -webkit-flex;
    align-items: center;
    cursor: pointer;
    transition: background 0.3s;
    background: #fff;
}
.trademark_item_header:hover{
    background: #f5f5f5;
}
.trademark_num{
    font-size: 14px;
    color: #388BF7;
    font-weight: bold;
    margin-right: 10px;
    min-width: 55px;
}
.trademark_name{
    font-size: 14px;
    color: #333;
    flex: 1;
}
.trademark_arrow{
    width: 14px;
    height: 14px;
    transition: transform 0.3s;
}
.trademark_item.active .trademark_arrow{
    transform: rotate(90deg);
}
.trademark_item_content{
    display: none;
    padding: 15px;
    background: #fff;
    border-top: 1px solid #eee;
}
.trademark_item.active .trademark_item_content{
    display: block;
}
.trademark_item_content>p{
    font-size: 13px;
    color: #666;
    line-height: 1.8;
    margin: 0;
    margin-bottom: 15px;
}
.trademark_detail_btn{
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(to right, #388BF7, #2C73F6);
    color: #ffffff;
    font-size: 13px;
    border-radius: 4px;
    text-decoration: none;
    transition: all 0.3s;
}
.trademark_detail_btn:hover{
    opacity: 0.9;
    transform: translateX(3px);
}
.nav_header{
    background: linear-gradient(to right, #388BF7, #2C73F6) !important;
    padding: 20px 0;
}
.nav_inner{
    width: 1200px;
    margin: 0 auto;
    display: flex;
    display: -webkit-flex;
    justify-content: space-between;
    align-items: flex-start;
}
.nav_header .nav_left{
    width: 330px;
}
.nav_header .nav_right>div:first-child{
    display: flex;
    display: -webkit-flex;
    align-items: center;
    margin-bottom: 15px;
    justify-content: flex-end;
}
.nav_header .nav_right>div:first-child>img{
    width: 18px;
    margin-right: 10px;
}
.nav_header .nav_right>div:first-child>span{
    font-size: 15px;
    color: #ffffff;
}
.nav_header .nav_items{
    display: flex;
    display: -webkit-flex;
    align-items: center;
}
.nav_header .nav_items>a{
    color: #ffffff !important;
    font-size: 15px;
}
.nav_header .nav_items>a:not(:last-child){
    margin-right: 20px;
}
@media screen and (max-width: 1400px) {
    .trademark_item{
        width: calc(33.33% - 14px);
    }
}
@media screen and (max-width: 1000px) {
    .trademark_item{
        width: calc(50% - 10px);
    }
}
@media screen and (max-width: 768px) {
    .trademark_container{
        width: 100%;
        padding: 0 15px;
    }
    .trademark_item{
        width: 100%;
    }
    .nav_inner{
        width: 100%;
        padding: 0 15px;
    }
    .nav_header .nav_left{
        width: 200px;
    }
    .nav_header .nav_items>a{
        font-size: 12px;
    }
    .nav_header .nav_items>a:not(:last-child){
        margin-right: 10px;
    }
}