* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

a {
    text-decoration: none;
    cursor: pointer;
    display: inline-block;
}

ul,
li {
    list-style: none;
}

.w {
    width: 1200px;
    margin: 0 auto;
}

.active::after {
    content: "";
    display: block;
    width: 100%;
    height: 3px;
    background: #F3EFD4;
    border-radius: 2px;
}

.nav {
    height: 80px;
    background: #401600;
}

.nav .w {
    display: flex;
    align-items: center;
}

.nav h1 {
    font-size: 30px;
    font-family: PingFang SC;
    font-weight: 400;
    color: #F3EFD4;
    line-height: 80px;
    display: flex;
    align-items: center;
    float: left;
    margin-right: 60px;
}

.nav h1::before {
    background: url(../images/pc/logo.png) no-repeat;
    background-size: contain;
    content: "";
    display: block;
    width: 38px;
    height: 44px;
    margin-right: 15px;
}

.nav ul {
    float: left;
}

.nav ul li {
    float: left;
    height: 100%;
    padding: 0 20px;
    line-height: 38px;
}

.nav ul li a {
    font-size: 16px;
    font-family: PingFang SC;
    font-weight: 400;
    color: #F3EFD4;
}

.banner {
    background: url(../images/pc/index_banner.png) no-repeat center;
    background-size: contain;
    height: 540px;
}

.banner h2 {
    font-size: 48px;
    font-family: PingFang SC;
    font-weight: 500;
    color: #FFFFFF;
    line-height: 108px;
    padding-top: 150px;
}

.banner h2::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background: #F3EFD4;
    border-radius: 2px;
}

.banner p {
    font-size: 24px;
    font-family: PingFang SC;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 84px;
}

.center {
    padding-top: 50px;
    text-align: center;
}

.center h2 {
    font-size: 40px;
    font-family: PingFang SC;
    font-weight: 500;
    color: #220C00;
    line-height: 100px;
}

.center h2::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background: #220C00;
    border-radius: 2px;
    margin: 0 auto;
}

.center p {
    padding-top: 40px;
    font-size: 24px;
    font-family: PingFang SC;
    font-weight: 400;
    color: #220C00;
    line-height: 36px;
    text-align: left;
}

.center p::after {
    background: url(../images/pc/index.png) no-repeat;
    background-size: contain;
    content: "";
    display: block;
    width: 1200px;
    height: 576px;
    margin: 60px auto 80px;
}

.bottom1 {
    background: url(../images/pc/index_bottom.png) no-repeat center;
    background-size: contain;
    height: 540px;
}

.bottom {
    background: #F5F5F5;
    height: 300px;
    margin: 136px 0 74px;
    font-size: 16px;
    font-family: PingFang SC;
    font-weight: 400;
    color: #666666;
    line-height: 30px;
    text-align: center;
    padding-top: 100px;
}

.bottom a {
    color: #666666;
}

@media (max-width: 1080px) {
    .w {
        width: 100%;
        margin: 0 auto;
    }
    .active::after {
        content: "";
        display: block;
        width: 100%;
        height: 3px;
        background: #F3EFD4;
        border-radius: 2px;
    }
    .nav {
        height: 11.1111vw;
        background: #401600;
    }
    .nav .w {
        display: flex;
        align-items: center;
        padding: 0 3.7037vw;
    }
    .nav h1 {
        font-size: 3.3333vw;
        font-family: PingFang SC;
        font-weight: 400;
        color: #F3EFD4;
        line-height: 11.1111vw;
        display: flex;
        align-items: center;
        float: left;
        margin-right: 5.5556vw;
    }
    .nav h1::before {
        background: url(../images/pc/logo.png) no-repeat;
        background-size: contain;
        content: "";
        display: block;
        width: 4.0741vw;
        height: 4.6296vw;
        margin-right: 1.4815vw;
    }
    .nav ul {
        float: left;
    }
    .nav ul li {
        float: left;
        height: 100%;
        padding: 0 1.8519vw;
        line-height: 6.4815vw;
    }
    .nav ul li a {
        font-size: 2.7778vw;
        font-family: PingFang SC;
        font-weight: 400;
        color: #F3EFD4;
    }
    .banner {
        background: url(../images/phone/index_banner.png) no-repeat center;
        background-size: cover;
        width: 100%;
        height: 51.7037vw;
    }
    .banner .w {
        padding: 0 3.7037vw;
    }
    .banner h2 {
        font-size: 4.6296vw;
        font-family: PingFang SC;
        font-weight: 500;
        color: #FFFFFF;
        line-height: 10.3704vw;
        padding-top: 12.037vw;
    }
    .banner h2::after {
        content: "";
        display: block;
        width: 5.5556vw;
        height: 4px;
        background: #F3EFD4;
        border-radius: 2px;
    }
    .banner p {
        font-size: 2.4074vw;
        font-family: PingFang SC;
        font-weight: 400;
        color: #FFFFFF;
        line-height: 7.963vw;
    }
    .center {
        padding-top: 3.7037vw;
        text-align: center;
    }
    .center h2 {
        font-size: 3.2037vw;
        font-family: PingFang SC;
        font-weight: 500;
        color: #220C00;
        line-height: 11.1111vw;
    }
    .center h2::after {
        content: "";
        display: block;
        width: 5.5556vw;
        height: 4px;
        background: #220C00;
        border-radius: 2px;
        margin: 0 auto;
    }
    .center p {
        font-size: 2.4074vw;
        font-family: PingFang SC;
        font-weight: 400;
        color: #220C00;
        line-height: 3.7037vw;
        text-align: left;
        padding: 3.2037vw 3.7037vw 0;
    }
    .center p::after {
        background: url(../images/phone/index.png) no-repeat;
        background-size: contain;
        content: "";
        display: block;
        width: 92.5926vw;
        height: 44.4444vw;
        margin: 7.4074vw auto;
    }
    .bottom1 {
        background: url(../images/phone/index_bottom.png) no-repeat center;
        background-size: cover;
        height: 41.6667vw;
    }
    .bottom {
        background: #F5F5F5;
        height: 35.1852vw;
        margin: 13.1481vw 0 7.4074vw;
        font-size: 2.2222vw;
        font-family: PingFang SC;
        font-weight: 400;
        color: #666666;
        line-height: 3.3333vw;
        text-align: center;
        padding-top: 12.963vw;
    }
    .bottom a {
        color: #666666;
    }
}