.sec1 .joke {
    width: 1440px;
    margin: auto;
    padding-top: 81px;
}
.sec1 .joke form {
    width: 100%;
    height: 90px;
    border: 1px solid #CCCCCC;
    display: flex;
    align-items: center;
    margin-bottom: 71px;
    padding: 0 25px;
}
.sec1 .joke form input {
    width: calc(100% - 26px);
    height: 100%;
    border: none;
    font-size: 20px;
    font-family: HarmonyOS Sans SC r;
    font-weight: 400;
    color: #333333;
    line-height: 26px;
}
.sec1 .joke form input::placeholder {
    font-size: 20px;
    font-family: HarmonyOS Sans SC r;
    font-weight: 400;
    color: #333333;
    line-height: 26px;
    opacity: 0.5;
}
.sec1 .joke form button {
    font-size: 26px;
    color: #666666;
    background: unset;
    transition: 0.6s;
}
.sec1 .joke form button:hover {
    color: #CA0000;
}
.sec1 .joke .main {
    display: flex;
    flex-wrap: wrap;
}
.sec1 .joke  .main .item {
    width: 452px;
    margin-bottom: 50px;
}
.sec1 .joke .main .item:not(:nth-child(3n)) {
    margin-right: 42px;
}
.sec1 .joke .main .item .img {
    display: block;
    width: 100%;
    overflow: hidden;
}
.sec1 .joke .main .item .img img {
    display: block;
    transition: 3s;
}
.sec1 .joke .main .item .img:hover img {
    transform: scale(1.1);
}
.sec1 .joke .main .item .item_text {
    width: 100%;
    height: 167px;
    padding: 30px 45px;
    background: #F5F5F5;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.sec1 .joke .main .item .item_text a {
    -webkit-line-clamp: 2;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 22px;
    font-family: HarmonyOS Sans SC b;
    font-weight: bold;
    color: #333333;
    line-height: 32px;
    transition: 0.6s;
}
.sec1 .joke .main .item .item_text a:hover {
    color: #CA0000;
}
.page {
    margin: 13px 0 89px;
}

@media screen and (max-width:1600px){
    .sec1 .joke {
        width: 90%;
        padding-top: 60px;
    }
    .sec1 .joke form {
        width: 100%;
        height: 70px;
        padding: 0 30px 0 30px;
    }
    .sec1 .joke .main .item {
        width: 32%;
    }
    .sec1 .joke .main .item:not(:nth-child(3n)) {
        margin-right: 2%;
    }
    .sec1 .joke .main .item .item_text a {
        font-size: 20px;
        line-height: 1.5;
    }
    .sec1 .joke .main .item .item_text {
        padding: 30px 25px;
    }
}
@media screen and (max-width:1400px){
    .sec1 .joke .main .item .item_text a {
        font-size: 18px;
    }
    .sec1 .joke .main .item .item_text {
        padding: 25px 20px;
        height: 140px;
    }
}
@media screen and (max-width:768px){
    .sec1 .joke .main .item {
        width: 100%;
    }
    .sec1 .joke .main .item:not(:nth-child(3n)) {
        margin-right: 0;
    }
    .sec1 .joke {
        padding-top: 0;
    }
    .sec1 {
        padding: 40px 0;
    }
    .sec1 .joke form input::placeholder,.sec1 .joke form input {
        font-size: 16px;
    }
    .sec1 .joke form {
        height: 50px;
    }
    .sec1 .joke form button {
        font-size: 20px;
    }
    .sec1 .joke form {
        padding: 0 15px;
    }
}