/* flex布局 */
.flex {
    display: flex;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-between {
    justify-content: space-between;
}

.flex-middle {
    align-items: center;
}

.flex-top {
    align-items: flex-start;
}

.flex-bottom {
    align-items: flex-end;
}

.flex-left {
    justify-content: flex-start;
}

.flex-right {
    justify-content: flex-end;
}

.flex-center {
    align-items: center;
    justify-content: center;
}

.md-download-1 {
    padding: 0.6rem;
    background-color: #fff;
}

.md-download-1 .ditem {
    margin-bottom: 0.36rem;
    position: relative;
}

.md-download-1 .ditem:last-child {
    margin-bottom: 0;
}

.md-download-1 .title {
    font-weight: bold;
}

.md-download-1 .ul {
    margin-top: 0.27rem;
    flex-wrap: wrap;
}

.md-download-1 .li {
    width: calc(485 / 1000 * 100%);
    margin-bottom: 0.2rem;
}

.md-download-1 .dd {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f7f7f7;
    color: #666;
    height: 100%;
    padding: 0.25rem 0.36rem;
    transition: all 0.3s;
}

.md-download-1 .dd:hover {
    background-color: #b70914;
    color: #fff;
}

.md-download-1 .dd:hover .ic {
    filter: brightness(0) invert(1);
}

.md-download-1 .name {
    width: 60%;
}

.md-download-1 .ic {
    width: 0.7em;
    height: 1em;
    background-image: url(../images/z8.png);
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
    transition: all 0.3s;
}

.md-download-1 .md-md {
    position: absolute;
    top: -1rem;
}

@media screen and (max-width: 750px) {
    .md-download-1 {
        padding: 0.4rem;
    }

    .md-download-1 .li {
        width: 100%;
    }
}

.md-pro-page {
    padding-top: 0.8rem;
    padding-bottom: 1.04rem;
    background-color: #f7f7f7;
    line-height: 1.5;
}

.md-pro-page * {
    line-height: inherit;
}

.md-pro-page .layout {
    width: 15.2rem;
    max-width: 94%;
    margin-left: auto;
    margin-right: auto;
}

.md-pro-page .pro-le {
    width: 22.3684210526%;
}

.md-pro-page .pro-ri {
    width: 73.6842105263%;
}

@media screen and (max-width: 750px) {
    .md-pro-page .pro-le {
        width: 100%;
    }

    .md-pro-page .pro-ri {
        width: 100%;
    }
}

.pro-nav {
    border-radius: 0.2rem;
    position: sticky;
    top: 1rem;
    margin-bottom: 0.3rem;
}

.pro-nav .ul1 .li1 {
    margin-bottom: 2px;
    background-color: #fff;
}

.pro-nav .ul1 .show .dt {
    background-color: #b70914;
}

.pro-nav .ul1 .show .a1 {
    color: #eee;
}

.pro-nav .ul1 .show .ic {
    transform: rotate(-90deg);
    filter: brightness(0) invert(1);
}

.pro-nav .ul1 .dt {
    position: relative;
    cursor: pointer;
}

.pro-nav .ul1 .ic {
    width: 2em;
    height: 2em;
    position: absolute;
    top: calc(50% - 1em);
    right: 0.3rem;
    transform-origin: center;
    transition: all 0.3s;
}

.pro-nav .ul1 .ic1 {
    background-image: url(../images/z7.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: auto 50%;
}

.pro-nav .ul1 .a1 {
    color: #000;
    display: block;
    padding: 0.22rem 0.3rem;
}

.pro-nav .ul1 .ul2 {
    display: none;
    padding: 0.15rem 0;
}

.pro-nav .ul1 .a2 {
    display: block;
    padding: 0.1rem 0.6rem;
    color: #666;
    transition: color 0.3s;
}

.pro-nav .ul1 .a2:hover {
    color: #b70914;
}

.pro-nav .ul1 .ul3 {
    display: none;
    padding-top: 0.1rem;
    padding-bottom: 0.2rem;
}

.pro-nav .ul1 .a3 {
    display: block;
    line-height: 2.3571428571;
    padding: 0 0.4rem;
    color: #666;
}

.pro-nav .ul1 .a3:hover {
    color: #b70914;
}

.pro-nav .btns {
    margin-top: 0.2rem;
}

.pro-nav .btns .down {
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1;
    padding: 0.2rem;
    box-shadow: 0 0 0 1px inset #b70914;
    color: #b70914;
    border-radius: 1rem;
    transition: all 0.3s;
}

.pro-nav .btns .down:hover {
    background-color: #b70914;
    color: #fff;
}

.pro-nav .btns .down:hover .dic {
    filter: brightness(0) invert(1);
}

.pro-nav .btns .dic {
    width: 1em;
    height: 1em;
    background-image: url(../images/a8.png);
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
    margin-left: 0.2rem;
}

@media screen and (max-width: 750px) {
    .pro-nav .n-tit {
        cursor: pointer;
    }
}