.box1 {
    padding-top: 120px;
}

.box1 .title {
    font-weight: 600;
    font-size: 32px;
    color: #333333;
    margin-bottom: 50px;
    padding-left: 20px;
    position: relative;
}

.box1 .title::before {
    width: 5px;
    height: 28px;
    background-color: #F40020;
    position: absolute;
    top: 50%;
    left: 0;
    margin-top: -14px;
    content: "";
}

.box1 .text-content {
    width: 421px;
    line-height: 25px;
}

.box1 .box1-img {
    width: 619px;
    height: 348px;
}

.box1 .box-line {
    margin: auto;
    width: 2px;
    height: 3384px;
    background-color: #C8C8C8;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    margin-bottom: 350px;
}

.box1 .box-line .line-yuan {
    width: 30px;
    height: 30px;
    background-image: url(../images/ico_lcbyuan@2x.png);
    background-repeat: no-repeat;
    background-size: contain;
    margin-left: -14px;
}

.box1 .box-line .yuan6 {
    margin-bottom: -10px;
    position: relative;

}

.box1 .box-line .yuan5 {
    margin-bottom:600px;
    position: relative;

}

.box1 .box-line .yuan4 {
    margin-bottom: 460px;
    position: relative;

}

.box1 .box-line .yuan3 {
    margin-bottom: 475px !important;
    position: relative;

}

.box1 .box-line .yuan2 {
    margin-bottom: 450px;
    position: relative;
}

.box1 .box-line .yuan1 {
    margin-bottom: 555px;
    position: relative;
}
.box1 .box-line .yuan-new{
    margin-bottom: 470px;
    position: relative;
}

.box1 .box-line .yuan1 .l {
    width: 540px;
    /* height: 380px; */
    background-color: #f6f6f6;
    position: absolute;
    left: 65px;
    top: 50%;
    margin-top: -190px;
}
.box1 .box-line .yuan1 .l .video-box{
    position: relative;
}
.box1 .box-line .yuan1 .l .video-box .play{
    width: 100%;
    height: 312px;
    background-color: #000;
    opacity: 0.5;
    text-align: center;
    position:absolute;
    top: 0;
}
.box1 .box-line .yuan1 .l .video-box .play-btn{
    width: 50px;
    height: 50px;
    position: absolute;
    top: 50%;
    margin-top: -25px;
    left: 50%;
    margin-left: -25px;
    z-index: 999;
    border-radius: 50%;
    display: block;   
}
.box1 .box-line .yuan1 .l .video-box .play-btn .img{
    width: 100%;
    height: 100%;
    background-size: 100% 100%;
}
.box1 .box-line .yuan1 .time {
    width: 540px;
    height: 50px;
    line-height: 30px;
    font-size: 28px;
    color: #333333;
    font-weight: 600;
    text-align: right;
    position: absolute;
    right: 60px;
}
.box1 .box-line .yuan2 .l {
    width: 540px;
    /* height: 762px; */
    background-color: #f6f6f6;
    position: absolute;
    right: 65px;
    top: 50%;
    margin-top: -189px;
}
.box1 .box-line .yuan2 .time {
    width: 540px;
    height: 50px;
    text-align: left;
    line-height: 30px;
    font-size: 28px;
    color: #333333;
    font-weight: 600;
    position: absolute;
    left: 60px;
}
.box1 .box-line .yuan-new .l{
    width: 540px;
    background-color: #f6f6f6;
    position: absolute;
    left: 65px;
    top: 50%;
    margin-top: -190px;
}
.box1 .box-line .yuan-new .time{
    width: 540px;
    font-size: 28px;
    color: #333333;
    font-weight: 600;
    text-align: right;
    position: absolute;
    right: 60px;
}
.box1 .box-line .yuan3 .l{
    width: 540px;
    background-color: #f6f6f6;
    position: absolute;
    right: 65px;
    top: 50%;
    margin-top: -190px;
}
.box1 .box-line .yuan3 .time{
    width: 540px;
    font-size: 28px;
    color: #333333;
    font-weight: 600;
    text-align: left;
    position: absolute;
    left: 60px;
}

.box1 .box-line .yuan4 .l{
    width: 540px;
    background-color: #f6f6f6;
    position: absolute;
    left: 65px;
    top: 50%;
    margin-top: -201px;
}
.box1 .box-line .yuan4 .time {
    width: 540px;
    height: 50px;
    text-align: right;
    line-height: 30px;
    font-size: 28px;
    color: #333333;
    font-weight: 600;
    position: absolute;
    right: 60px;
}
.box1 .box-line .yuan5 .l{
    width: 540px;
    height: 402px;
    background-color: #f6f6f6;
    position: absolute;
    right: 65px;
    top: 50%;
    margin-top: -201px;
}
.box1 .box-line .yuan5 .time {
    width: 540px;
    height: 50px;
    text-align: left;
    line-height: 30px;
    font-size: 28px;
    color: #333333;
    font-weight: 600;
    position: absolute;
    left: 60px;
}
.box1 .box-line .yuan6 .l{
    width: 540px;
    background-color: #f6f6f6;
    position: absolute;
    left: 65px;
    top: 50%;
    margin-top: -369px;
}
.box1 .box-line .yuan6 .time {
    width: 540px;
    height: 50px;
    text-align: right;
    line-height: 30px;
    font-size: 28px;
    color: #333333;
    font-weight: 600;
    position: absolute;
    right: 60px;
}
.box1 .flex-between .flex-img{
    width: 619px;
}

/* Mobile Styles for Product Advantage Page */
@media (max-width: 768px) {
    .box1 {
        padding-top: 60px;
    }

    .box1 .title {
        font-size: 22px;
        margin-bottom: 30px;
    }

    .box1 .title::before {
        height: 22px;
        margin-top: -11px;
    }

    .box1 .text-content {
        width: 100%;
        margin-bottom: 20px;
    }

    .box1 .flex-between.flex-center {
        flex-direction: column;
    }

    .box1 .box1-img {
        width: 100%;
        height: auto;
    }

    /* All images should be responsive */
    .box1 img {
        max-width: 100%;
        height: auto !important;
    }
    .box1 .flex-between .flex-img {
        width: 100%;
    }

    .box1 .flex-between img[style*="width: 575px"],
    .box1 .flex-between img[style*="width: 619px"] {
        width: 100% !important;
        height: auto !important;
        margin-bottom: 15px;
    }

    /* Timeline section */
    .box1 .box-line {
        display: block;
        width: 100%;
        height: auto;
        background: none;
        margin-bottom: 50px;
    }

    .box1 .box-line .line-yuan {
        width: 100%;
        height: auto;
        background-image: none;
        margin-left: 0;
        margin-bottom: 30px !important;
        position: relative;
    }

    .box1 .box-line .yuan1,
    .box1 .box-line .yuan2,
    .box1 .box-line .yuan3,
    .box1 .box-line .yuan4,
    .box1 .box-line .yuan5,
    .box1 .box-line .yuan6,
    .box1 .box-line .yuan-new {
        margin-bottom: 30px !important;
    }

    .box1 .box-line .line-yuan .l {
        width: 100%;
        position: relative;
        left: auto;
        right: auto;
        top: auto;
        margin-top: 0;
    }

    .box1 .box-line .line-yuan .l img,
    .box1 .box-line .line-yuan .l video {
        width: 100% !important;
        height: auto !important;
    }

    .box1 .box-line .line-yuan .l .video-box {
        width: 100%;
    }

    .box1 .box-line .line-yuan .l .video-box .play {
        height: auto;
        aspect-ratio: 540/312;
    }

    .box1 .box-line .line-yuan .time {
        width: 100%;
        position: relative;
        left: auto;
        right: auto;
        font-size: 18px;
        margin-top: 10px;
        text-align: left !important;
    }

    .box1 .box-line .line-yuan .l > div[style*="padding: 20px"] {
        font-size: 14px !important;
        line-height: 24px !important;
    }

    /* 优化文字内容区域 - 减小字号和间距 */
    .box1 .text-content {
        font-size: 13px;
        line-height: 22px;
    }

    .box1 .text-content .tRed.font20,
    .box1 .text-content .font20 {
        font-size: 16px !important;
        line-height: 24px !important;
    }

    .box1 .text-content .lineH32 {
        line-height: 24px !important;
    }

    .box1 .text-content .mB20 {
        margin-bottom: 12px !important;
    }

    .box1 .font15 {
        font-size: 13px;
    }
}