.our_history_section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, #f6fbf7 0%, #ffffff 100%);
}

.our_history_intro {
    max-width: 820px;
    margin: 0 auto 56px;
    text-align: center;
}

.our_history_intro .heading-top {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.our_history_intro h4 {
    margin: 18px 0 14px;
    color: #0b1f19;
    font-size: 34px;
    line-height: 1.22;
}

.our_history_intro p {
    margin: 0;
    color: #56645f;
    font-size: 17px;
    line-height: 1.8;
}

.our_history_timeline {
    position: relative;
    max-width: 980px;
    margin: 0 auto;
    padding: 14px 0;
}

.our_history_timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: linear-gradient(180deg, rgba(28, 73, 54, 0.08), rgba(28, 73, 54, 0.55), rgba(28, 73, 54, 0.08));
    transform: translateX(-50%);
}

.our_history_item {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 92px 1fr;
    align-items: center;
    margin-bottom: 34px;
}

.our_history_item:last-child {
    margin-bottom: 0;
}

.our_history_item:nth-child(even) .our_history_card {
    grid-column: 3;
}

.our_history_item:nth-child(odd) .our_history_card {
    grid-column: 1;
}

.our_history_marker {
    grid-column: 2;
    width: 74px;
    min-height: 74px;
    margin: 0 auto;
    border: 8px solid #eef7f1;
    border-radius: 18px;
    background: #1f4b39;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.15;
    box-shadow: 0 16px 35px rgba(31, 75, 57, 0.18);
    z-index: 1;
}

.our_history_card {
    border: 1px solid #e2eee7;
    border-radius: 8px;
    background: #ffffff;
    padding: 28px;
    box-shadow: 0 22px 55px rgba(18, 47, 35, 0.08);
}

.our_history_card h3 {
    margin: 0 0 10px;
    color: #0b1f19;
    font-size: 22px;
    line-height: 1.35;
}

.our_history_card p {
    margin: 0;
    color: #5e6d67;
    font-size: 16px;
    line-height: 1.75;
}

@media (max-width: 991px) {
    .our_history_intro h4 {
        font-size: 28px;
    }

    .our_history_timeline::before {
        left: 37px;
    }

    .our_history_item,
    .our_history_item:nth-child(even),
    .our_history_item:nth-child(odd) {
        grid-template-columns: 74px 1fr;
        gap: 18px;
    }

    .our_history_marker {
        grid-column: 1;
        width: 66px;
        min-height: 66px;
        border-width: 7px;
    }

    .our_history_item:nth-child(even) .our_history_card,
    .our_history_item:nth-child(odd) .our_history_card {
        grid-column: 2;
    }
}

@media (max-width: 575px) {
    .our_history_card {
        padding: 22px;
    }
}