#app {
    min-width: 1200px;
    overflow: hidden;
    background-color: #fffbf5;
}

.header_content {
    position: relative;
    background-color: #eef7ff;
}

.header_list {
    width: 1200px;
    height: 100px;
    line-height: 100px;
    margin: 0px auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

    .header_list img {
        display: block;
        width: 180px;
    }

    .header_list ul li {
        float: left;
        width: 85px;
        text-align: center;
        height: 36px;
        line-height: 36px;
        color: #211a1a;
        margin-right: 28px;
        letter-spacing: 0.5px;
        font-weight: bold;
        cursor: pointer;
        position: relative;
    }

        .header_list ul li.active {
            color: #5e5555;
        }

            .header_list ul li.active:after {
                content: '';
                border-bottom: 3px solid #858585;
                width: 50%;
                position: absolute;
                bottom: 0;
                left: 0;
                right: 0;
                margin: auto;
            }

        .header_list ul li a {
            color: #211a1a;
        }

            .header_list ul li a:hover {
                color: #767676;
            }

        .header_list ul li:hover {
            color: #767676;
        }


    .header_list ul .button {
        color: #ffffff !important;
        border-radius: 8px;
        background-color: #0c86fe;
        border: 1px solid white;
        width: 125px;
        font-size: 14px;
        letter-spacing: 1.5px;
    }

        .header_list ul .button a {
            display: block;
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
        }

            .header_list ul .button a:hover {
                color: white;
            }

    .header_list ul li.button a .avatar {
        display: block;
        width: 20px;
        margin-right: 10px;
        border-radius: 50%;
    }

    .header_list ul li.button a .u_name {
        display: block;
        max-width: calc(100% - 50px);
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }

    .header_list ul .button:hover {
        background-color: #2a95ff;
    }


    .header_list ul .header {
        width: 45px;
        display: block;
        position: relative;
        top: -4px;
    }

.type_download {
    width: 100%;
    background-color: #4856f3;
    background-image: url('../img/index/shadding_top.png');
    background-repeat: no-repeat;
    background-size: 100% 50%;
    background-position: 0px 20%;
}

    .type_download .download_box {
        background-image: url('../img/index/shadding_bottom.png');
        background-repeat: no-repeat;
        background-size: 100% auto;
        background-position: 0px 80px;
        padding-bottom: 4%;
    }

        .type_download .download_box .download_method {
            display: flex;
            width: 1200px;
            margin: 0px auto;
            justify-content: space-between;
            align-items: center;
            padding-top: 6%;
        }

.download_box .download_method .left_textInfo {
    width: 480px;
}

    .download_box .download_method .left_textInfo .title {
        font-size: 2.8em;
        font-weight: bold;
        color: #ffffff;
        letter-spacing: 3px;
        margin-bottom: 60px;
        text-transform: uppercase;
    }

    .download_box .download_method .left_textInfo .describe {
        display: flex;
        align-items: center;
        position: relative;
        margin-bottom: 35px;
        font-size: 1.5em;
    }

        .download_box .download_method .left_textInfo .describe img {
            width: 20px;
            display: block;
            margin-right: 5px;
            margin-right: 10px;
            margin-top: 5px;
        }

        .download_box .download_method .left_textInfo .describe .text {
            font-size: 1em;
            color: #ffffff;
            position: relative;
            z-index: 2;
            letter-spacing: 1.5px;
        }

        .download_box .download_method .left_textInfo .describe .bottom_shadding {
            width: 90%;
            height: 2px;
            background-color: rgba(255,144,0,.25);
            position: absolute;
            left: 22px;
            bottom: -5px;
            left: 30px;
        }

.download_box .download_method .tips {
    letter-spacing: 1.5px;
    color: rgba(255,255,255,.5);
    text-align: left;
    margin-top: 30px;
}

.download_box .download_method .computer {
    width: 720px;
    display: block;
}

.download_button {
    width: 56%;
    margin: 0px auto;
    margin-top: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

    .download_button .d_btn {
        width: 40%;
        text-align: center;
    }

        .download_button .d_btn .tips {
            color: rgba(255,255,255,.55);
            margin-top: 15px;
            letter-spacing: 1.5px;
        }

        .download_button .d_btn .d_btn_inner {
            border: 2px solid #ffffff;
            height: 60px;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 1.3em;
            color: #ffffff;
            border-radius: 45px;
            cursor: pointer;
            letter-spacing: 1.5px;
        }

            .download_button .d_btn .d_btn_inner img {
                width: 30px;
                display: block;
                margin-right: 8px;
            }

            .download_button .d_btn .d_btn_inner:hover {
                background-color: rgba(255,255,255,.1);
            }

.common_software {
    width: 100%;
    background-color: #eceefe;
    background-image: url('../img/index/yellow_spot_bg.png');
    background-repeat: no-repeat;
    background-size: 45% auto;
    background-position: center;
}

.index_title_icon {
    width: 100%;
    display: flex;
    height: 90px;
    justify-content: center;
    align-items: center;
    padding-top: 60px;
}

    .index_title_icon .title {
        font-weight: bold;
        margin: 0px 6px;
        font-size: 1.8em;
        letter-spacing: 1.5px;
    }

    .index_title_icon img {
        display: block;
        width: 20px;
    }

.common_box {
    width: 1200px;
    margin: 0px auto;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

    .common_box .common_item {
        padding: 60px 36px;
        width: 300px;
        background-color: #ffffff;
        text-align: center;
        border-radius: 8px;
        margin-right: 22.5px;
        margin-bottom: 20px;
    }

        .common_box .common_item:hover {
            transform: scale(1.02);
            box-shadow: 0 0 15px 0 #dcdeeb;
        }

        .common_box .common_item .item_name {
            font-size: 1.3em;
            font-weight: bold;
            letter-spacing: 1.5px;
            margin-top: 5px;
            margin-bottom: 10px;
        }

        .common_box .common_item .describe {
            color: #939393;
            letter-spacing: 1.5px;
        }

        .common_box .common_item img {
            width: 120px;
            display: block;
            margin: 0px auto;
            margin-bottom: 15px;
        }

        .common_box .common_item .set_hand {
            width: 82%;
            height: 50px;
            line-height: 50px;
            margin:0 auto;
            display: block;
            border-radius: 32px;
            color: #ffffff;
            font-size: 1.2em;
            background: linear-gradient(to right,#a48bf1,#7282eb);
            margin-top: 35px;
        }