.history-section {
    padding: 0px 0 160px;
}

.history-intro {
    text-align: center;
    margin-bottom: 120px;
}

.history-intro .en {
    font-size: 18px;
    font-weight: 600;
}

.history-intro h3 {
    margin-top: 20px;
    font-size: 32px;
    line-height: 1.4;
    font-weight: 700;
}

.history-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-bottom: 5px;
}

.history-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    width: 1px;
    height: 91.3%;
    background: #ddd;
}

.history-timeline .year {
    position: relative;
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
}

.history-timeline .dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 30px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ccc;
}

.history-timeline .year.active .dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: -15px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #0C4DA2;
    z-index: 3 !important;
}

.history-timeline .year.active .year-text.this-year {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #0C4DA2;
    color: #fff;
    width: 248px;
    height: 248px;
    border-radius: 50%;
}

.history-timeline .year-text {
    font-size: 40px;
    font-weight: 700;
}

.history-timeline .content {
    width: 624px;
    text-align: left;
}

.history-timeline .year:first-child .year-text {
    font-size: 48px;
    font-weight: 700;
}

.history-timeline .year:nth-child(even) .content {
    margin-left: 480px;
}

.history-timeline .year:nth-child(odd) .content {
    margin-right: 480px;
    text-align: right;
}

.history-timeline .year:last-child .last-year {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-left: 0;
}

.history-timeline .year.mo-b {
    display: none;
}

@media (max-width: 834px) {
    .intro-section01 .intro-desc {
        margin-bottom: 100px;
    }

    .history-timeline .year.pc-b {
        display: none;
    }


    .history-timeline .year.mo-b .year-text {
        font-size: 40px;
    }

    .history-timeline .year.mo-b {
        display: block;
        color: #0C4DA2;
    }

    .history-timeline .year.mo-b .dot {
        top: 25px;
        background: #0C4DA2;
    }

    .history-timeline .year.active .dot {
        left: 3px;
        top: 23px;
    }

    .history-timeline .year:last-child .last-year {
        align-items: flex-start;
        margin-left: 40px;
    }

    .history-timeline .year:last-child .dot::after {
        content: '';
        position: absolute;
        left: 3px;
        top: 8px;
        width: 2px;
        height: 30px;
        background: #fff;
        z-index: -1;
    }

    .history-intro {
        margin-bottom: 80px;
    }

    .history-timeline {
        padding-left: 24px;
    }

    .history-timeline::before {
        left: 27px;
        transform: none;
        top: 25px;
    }

    .history-timeline .year {
        justify-content: flex-start;
    }

    .history-timeline .dot {
        left: 0;
        top: 22px;
        transform: none;
    }

    .history-timeline .dot.big {
        width: 48px;
        height: 48px;
    }

    .history-timeline .content {
        width: auto;
        margin-left: 40px !important;
        text-align: left !important;
    }

    .history-timeline .content p {
        font-size: 24px;
    }

    .history-timeline .content .year-text {
        font-size: 36px;
    }

    .history-timeline .year:nth-child(odd) .content {
        margin-right: 0;
    }

    .history-timeline .year-text {
        font-size: 36px;
    }
}

@media (max-width: 412px) {
    .history-timeline {
        padding-left: 0;
    }

    .history-timeline::before {
        top: 20px;
        left: 3px;
    }

    .history-timeline .content {
        margin-left: 25px !important;
    }

    .history-timeline .year:last-child .last-year {
        margin-left: 25px;
    }

    .history-timeline .year.mo-b .year-text {
        font-size: 30px;
    }

    .history-timeline .content p {
        font-size: 17px;
    }

    .history-timeline .content .year-text {
        font-size: 24px;
    }

    .history-timeline .year-text {
        font-size: 24px;
    }

    .history-timeline .year.mo-b .dot {
        top: 20px;
    }

    .history-timeline .dot {
        top: 15px;
    }

    .history-timeline .year.active .dot {
        top: 15px;
    }

    .history-section {
        padding-bottom: 100px;
    }
}