.brief-box {
    padding-top: 67px;
    padding-bottom: 90px;
}

.mian h3 {
    font-size: 43px;
    color: #000000;
    line-height: 60px;
}

 .line-brief {
    width: 82px;
    height: 0px;
    border: 3px solid #B11F23;
    margin-top: 12px;
    margin-bottom: 35px;
}

.brief-box p {
    color: #333333;
    line-height: 32px;
    text-indent: 2em;
}


/* Swiper区域 */
.swiper-section {
    width: 100%;
    height: 549px;
}

.swiper {
    width: 100%;
    height: 100%;

}



.year-p {
    color: #141414;
    line-height: 35px;
}

.year-display {
    margin-top: 48px;
}

.current-year {
    width: -moz-max-content;
    width: max-content;
    font-weight: 900;
    font-size: 140px;
    line-height: 1;
    background: url(../images/banner/bg.jpg) no-repeat center;
    background-size: cover;
    -webkit-background-clip: text;
    background-clip: text;
    color: rgba(0, 0, 0, 0);
    /* animation: bg-scale 20s ease-in-out infinite; */
    animation: shine 3s infinite;
}
 @keyframes shine {
      0%, 100% {
       
        background-position: 96% 96%;
      }
      50% {
     
        background-position: 100% 100%;
      }
    }
.top-year {
    height: 754px;
    background-image: url(../images/brief-bg.jpg);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    padding-bottom: 86px;
    padding-top: 120px;
}

.year-r {
    width: 62%;
    background: #FFFFFF;
    border-radius: 35px 35px 35px 35px;
    padding: 30px 67px;
    padding-bottom: 0;
    height: 549px;
    margin-left: 5vw;
    overflow: hidden;
}

.timeline-section {
    width: 100%;
    height: 255px;
    position: relative;
    background: #B11F23;
    padding: 30px 0;
    /* overflow-x: scroll; */
}

.year-w {
    font-size: 40px;
    color: #B11F23;
    line-height: 56px;
    margin-bottom: 12px;
}

.swiper-year-c {
    display: flex;
}

.circle-line-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-right: 15px;
}

.big-circle {
    width: 33px;
    height: 33px;
    border: 1px solid #C1C1C1;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.small-circle {
    width: 11px;
    height: 11px;
    background: #B11F23;
    border-radius: 50%;
}

.circle-line {
    width: 0px;
    height: 420px;
    border: 1px solid #C1C1C1;
}

.swiper-slide p {
    color: #141414;
    line-height: 30px;
    margin-bottom: 23px;
}

.year-img {
    overflow: hidden;
}

.year-img img {
    display: block;
   width: 100%;
    height: auto;
    transition: all .5s ease;
}

.year-img img:hover {
    transform: scale(1.1);
}

.track-box {
    width: 100%;
    background: #B11F23;
    height: 255px;
    padding-top: 58px;

    display: flex;
    flex-direction: column;
    justify-content: center;
}

.safe_track {
   width: 1440px;
    height: 200px;
    overflow: hidden;
    margin: 0 auto;
    position: relative;
    /* padding: 0 30px; */
}


.line-box {
    position: absolute;
    white-space: nowrap;
    display: flex;
    align-items: flex-end;
    flex-wrap: nowrap;
    padding: 0 60px;
    height: 160px;
}

.line-bottom {
    width: 100%;
    height: 1px;
    background: #fff;
    position: absolute;
    left: 0;
    right: 0;
    top: 101px;
}

.column-line-large {
    width: 2px;
    height: 25px;
    background: #fff;
    flex-shrink: 0;
    margin-top: 25px;
}

.column-line-small-box {
    width: 1px;
    height: 144px;
    flex-shrink: 0;
    margin-right: 38px;
}

.column-line-small {
    width: 1px;
    height: 10px;
    background: #fff;
    margin-top: 75px;

}

.content-box {
    display: flex;
    flex-direction: column;
    /* justify-content: center; */
    height: 108px;
    flex-shrink: 0;
    margin-right: 38px;
    position: relative;
    cursor: pointer;
}

.year-label {
    font-size: 17px;
    color: #fff;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);

}

.year-content {
    font-size: 16px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    top: 54px;
}

.line-progress {
    position: absolute;
    left: 0;
    bottom: 58px;
    height: 102.51px;
    background: linear-gradient(93deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.57) 100%);
    /* border-radius: 2px; */
    width: 0%;
    transition: width 0.5s ease;
}