.fade-bg {
    position: absolute;
    bottom: 0;
    border-radius: 10vh 10vh 0 0;
    background-color: rgba(0, 0, 0, .7);
    transition: all .4s;
    height: 0;
    background-color: #f9f9f9
}

* {
    font-family: Helvetica, "Source Han Sans CN"
}

.doc-list {
    margin-top: .5rem;
    margin-bottom: 1rem
}

body {
    max-width: 750px;
    margin: auto !important;
    position: relative;
    background: linear-gradient(179deg, #dcfffa, #ffefef);
}

.fade-bg.active {
    width: 100%;
    height: 180vh;
    max-width: 750px;
}

.catalog {
    text-align: center;
    min-height: 100vh;
    overflow: hidden;
    color: #fff;
    max-width: 750px;
    margin: auto;
    position: relative
}

.catalog img {
    position: absolute;
    right: .35rem;
    top: .32rem;
    width: .66rem;
    height: .66rem
}

.catalog .logo {
    margin-top: .62rem
}

.catalog .logo img {
    width: 1.68rem;
    height: 1.68rem;
    border-radius: .15rem
}

.catalog .app-name {
    font-size: .32rem;
    margin: .2rem 0
}

.catalog .slogn {
    font-size: .4rem;
    font-weight: 700;
    margin-bottom: .1rem;
    color : black;
}

.slogn span {
    background: linear-gradient(45deg, #0200d8, brown, #02b16b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent
}

.catalog .doc-list .doc-item {
    width: 3rem;
    height: .88rem;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: .2rem;
    font-size: .32rem;
    margin: 0 auto .33rem;
    position: relative
}

.main-wrap.doc {
    position: fixed;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    padding-bottom: 2rem;
    max-width: 750px;
    color: #fff;
    font-size: .24rem;
    overflow-y: auto;
    min-height: 100vh;
    box-sizing: border-box;
    display: none
}

.doc .doc-title {
    text-align: center;
    padding: .45rem 0;
    font-size: .48rem;
    color: rgb(54 54 54 / 75%);
    font-weight: 700
}

.doc .fix-close {
    position: absolute;
    right: .35rem;
    top: .32rem;
    width: .66rem;
    height: .66rem
}

.doc .doc-title img {
    height: .43rem;
    margin: 0 .21rem
}

.doc .main-content {
    padding: 0 .68rem
}

.doc .main-content .question {
    width: 100%;
    background-color: rgba(0, 0, 0, .42);
    border-radius: .35rem;
    padding: .18rem 0;
    text-align: center;
    margin-bottom: .25rem
}

.doc .main-content .question img {
    height: .38rem
}

.doc .main-content .tip {
    width: 100%;
    font-size: .34rem;
    margin-bottom: .25rem
}

.doc .main-content .icon {
    width: .64rem
}

.doc-detail {
    display: none
}

.doc-step .step-title {
    display: flex;
    margin-bottom: 10px
}

.doc-step .step-title .step-index {
    width: .66rem;
    height: .66rem;
    border-radius: 50%;
    background-color: #ff3f02;
    font-size: .42rem;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
    margin-right: .15rem
}

.doc-step .step-text {
    font-size: .28rem;
    margin-bottom: .25rem;
    margin-top: .08rem;
    color: rgba(54, 54, 54, 80%)
}

.doc-step .step-text .icon {
    width: .64rem;
    vertical-align: text-top
}

.doc-step .step-img {
    margin-bottom: .36rem
}

.doc-step .step-img img {
    width: 100%;
    border-radius: .32rem;
    box-shadow: 1px 1px 15px 2px #acacac
}

table {
    width: 100%;
    border-radius: .1rem;
    border-spacing: 0;
    box-shadow: 1px 1px 10px 1px #676767
}

table td {
    text-align: center;
    padding: .3rem .1rem;
    font-size: 1.1em
}

tr {
    color: #1c0000;
    font-weight: bold;
    background-attachment: fixed
}

table tr:first-child td:first-child {
    border-top-left-radius: .1rem
}

tr:first-child td:last-child {
    border-top-right-radius: .1rem
}

table tr:last-child td:first-child {
    border-bottom-left-radius: .1rem
}

tr:last-child td:last-child {
    border-bottom-right-radius: .1rem
}

.thh {
    font-size: 1.1em !important;
    background: linear-gradient(93deg, #000000, #636363);
    background-attachment: fixed;
    color: #ffffff
}

a {
    color: white
}

.alert {
    position: fixed;
    width: 100%;
    border: 0;
    bottom: 1rem;
    text-align: center;
    display: none;
    max-width: 750px
}

.alert span {
    background: rgba(0, 0, 0, .5);
    border-radius: .05rem;
    padding: .2rem .5rem;
    color: white
}

.iosbg {
    background: linear-gradient(90deg, rgba(0, 0, 0, 80%), rgb(52 52 52 / 80%))
}

.vivologo {
    background: linear-gradient(90deg, rgba(0, 114, 184, 80%), rgb(89 170 219 / 80%));
    color: white
}

.oppologo {
    background: linear-gradient(90deg, rgba(0, 128, 0, 80%), rgb(36 170 36 / 80%))
}

.samlogo {
    background: linear-gradient(90deg, rgba(255, 255, 255, 80%), rgb(242 242 242 / 80%));
    color: #1528A0 !important
}

.winlogo {
    background: linear-gradient(90deg, rgba(53, 164, 239, 80%), rgb(92 189 255 / 80%));
    color: white
}

.xiaologo {
    background: linear-gradient(90deg, rgba(255, 103, 0, 80%), rgb(253 139 61 / 80%));
    color: white
}

.huaweilogo {
    background: linear-gradient(90deg, rgba(207, 10, 44, 80%), rgb(246 68 99 / 80%));
    color: white
}

.ml {
    display: flex;
    justify-content: space-around
}

.tuto td {
    color: white;
    border: .5px solid #e9e9e9;
    padding: 0;
}

.tuto th {
    color: white;
    text-align: center;
    padding: .3rem .1rem;
    font-size: 1.2em;
    font-weight: bold;
}

.tuto a {
    background: linear-gradient(90deg, #434343, #727272);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent
}

.cd {
    font-size: .6em;
    padding-left: .1rem
}

.tuto .tutot {
    font-size: 1.1em;
    background: linear-gradient(90deg, #434343, #727272);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent
}

.tuto tr {
    height: 1.5rem;
}

.tuto tr:first-child {
    height: 1.3rem;
}

.tuto tr td:first-child {
    width: 40%;
    font-size: 1.1em;
}

.tuto tr td:last-child {
    width: 60%;
    line-height: .4rem;
    text-align: left;
    padding-left: 1rem
}

.bicon {
    position: unset !important;
    width: .2rem !important;
    height: .2rem !important;
}

.slogn img {
    position: absolute !important;
    left: .32rem;
    top: .2rem;
    width: 1rem;
    height: 1rem;
}

.light {
    animation: bg 3s linear infinite;
}

@keyframes bg {
    0% {
        background-position-x: 1rem
    }

    28% {
        background-position-x: 4rem
    }

    50% {
        background-position-x: 6rem
    }

    78% {
        background-position-x: 7rem
    }

    100% {
        background-position-x: 8rem
    }
}

@media (width>750px) {
    .dns td {
        font-size: 1.5em
    }

    .cp {
        cursor: pointer
    }

    .cp:hover {
        transform: translateY(-2px);
        transition: all .4s
    }

    .tuto th {
        font-size: 2em;
        font-weight: bold
    }

    .tuto td {
        font-size: 1.2em;
        cursor: pointer
    }

    .doc-item:hover {
        transform: translateY(-2px);
        transition: all .4s
    }

    .doc-step .step-img {
        text-align: center
    }

    .doc-step .step-img img {
        width: 50%
    }

    .winImg {
        cursor: pointer;
        width: 100% !important
    }

    .winImg:hover {
        transform: scale(1.1);
        transition: all .4s
    }

    .tuto .tutot {
        font-size: 1.3em
    }

    .tuto tr {
        height: 1.5rem
    }

    .tuto tr:first-child {
        height: 1.3rem
    }

    .tuto tr td:first-child {
        width: 40%;
        font-size: 1.7em
    }

    .tuto tr td:last-child {
        width: 60%;
        line-height: .4rem;
        text-align: left;
        padding-left: 2rem
    }
}