img {
    max-width: 100%;
    height: auto;
}

a   {
    
    color: #000;
}

/* header */
/* .header {
    padding-top: 50px;
} */

.header .hdtxt {
    position: relative;
}

.header .hdtxt .title {
    font-size: 32px;
}

.header .hdtxt .note {
    font-size: 14px;
    color: #6f6f6f;
    font-weight: 400;
    line-height: 24px;
    margin: 30px 0;
}

.header .menu {
    position: relative;
}

.header .menu ul {
    display: flex;
    overflow: auto;
}

.header .menu ul li {
    margin-right: 4%;
}

.header .menu ul li a {
    font-size: 16px;
    color: #333;
    text-decoration: none;
    display: block;
    line-height: 3;
    position: relative;
    white-space: nowrap;
}

.header .menu ul li a::after {
    content: "";
    width: 0%;
    height: 2px;
    background: #007bff;
    display: block;
    transition: all .5s ease;
    left: 50%;
    position: absolute;
    bottom: 0;
    transform: translateX(-50%);
}

.header .menu ul li.on a {
    color: #007bff;
}

.header .menu ul li.on a::after {
    width: 100%;
}

.header .menu ul li a:hover {
    color: #007bff;
}

.header .menu ul li a:hover::after {
    width: 100%;
}

/* main */
.main {
    padding: 40px 0;
}

.pro-list {
    position: relative;
}

.pro-list li {
    position: relative;
}

.pro-list li .img-box {
    overflow: hidden;
}

.pro-list li .img-box img {
    width: 100%;
    transition: all .5s ease;
    aspect-ratio: 1/1;
    object-fit: cover;
}

.pro-list li .cont-box {
    text-align: center;
    padding-bottom: 30px;
}

.pro-list li .cont-box .tt {
    font-size: 24px;
    font-weight: 400;
    margin: 10px 0;
    color: #555;
}

.pro-list li .cont-box hr {
    border-color: #999;
    width: 10%;
    margin: 10px auto;
}

.pro-list li .cont-box .date {
    font-size: 12px;
    color: #666;
}

.pro-list li:hover .img-box img {
    transform: scale(1.08);
}

/* footer */
.footer {
    padding: 50px 0;
    border-top: 1px solid #eee;
}

/* 响应式断点 */
@media screen and (max-width: 992px) {
    .header .hdtxt .title {
        font-size: 28px;
    }

    .header .menu ul li a {
        font-size: 16px;
    }

    .pro-list li .cont-box .tt {
        font-size: 20px;

    }
}

@media screen and (max-width: 768px) {
    .header .hdtxt .title {
        font-size: 24px;
    }

    .header .menu ul li a {
        font-size: 14px;
    }

    .pro-list li .cont-box .tt {
        font-size: 18px;

    }
}

@media screen and (max-width: 576) {
    .header .hdtxt .title {
        font-size: 20px;
    }

    .header .menu ul li a {
        font-size: 12px;
    }

    .pro-list li .cont-box .tt {
        font-size: 16px;

    }

}