.tl {
    position: relative;
    --tl-col-gap: 40px;
}
.tl__line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    background-color: #e0e0e0;
    z-index: 0;
}
.tl__item {
    position: relative;
    display: flex;
    align-items: flex-start;
    width: 100%;
}
.tl__dot {
    position: absolute;
    left: 50%;
    top: 24px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #2a4a7f;
    transform: translateX(-50%);
    z-index: 1;
}
.tl__year-col {
    width: calc(50% - var(--tl-col-gap) / 2);
    display: flex;
    align-items: flex-start;
    padding-top: 18px;
    box-sizing: border-box;
}
.tl__card-col {
    width: calc(50% - var(--tl-col-gap) / 2);
    box-sizing: border-box;
}
.tl__year {
    font-size: 26px;
    font-weight: 700;
    color: #2a4a7f;
    line-height: 1.3;
}

/* Right card: year left, card right */
.tl__item--right {
    flex-direction: row;
}
.tl__item--right .tl__year-col {
    justify-content: flex-end;
    padding-right: var(--tl-col-gap);
    text-align: right;
}
.tl__item--right .tl__card-col {
    margin-left: auto;
    padding-left: var(--tl-col-gap);
}

/* Left card: card left, year right */
.tl__item--left {
    flex-direction: row-reverse;
}
.tl__item--left .tl__year-col {
    justify-content: flex-start;
    padding-left: var(--tl-col-gap);
    text-align: left;
}
.tl__item--left .tl__card-col {
    margin-right: auto;
    padding-right: var(--tl-col-gap);
}

.tl__card {
    background: #f8f8f8;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.tl__image {
    border-radius: 4px;
    overflow: hidden;
}
.tl__image img {
    width: 100%;
    height: auto;
    display: block;
}
.tl__title {
    font-size: 18px;
    font-weight: 700;
    color: #2a4a7f;
    margin: 16px 0 0;
    line-height: 1.4;
}
.tl__desc {
    font-size: 14px;
    color: #555;
    line-height: 1.6;
    margin: 10px 0 0;
}

/* Mobile */
@media (max-width: 767px) {
    .tl__line {
        left: 16px;
    }
    .tl__dot {
        left: 16px;
        top: 4px;
    }
    .tl__item,
    .tl__item--right,
    .tl__item--left {
        flex-direction: column;
        padding-left: 40px;
    }
    .tl__year-col {
        width: 100%;
        padding: 0 0 10px 0;
        justify-content: flex-start;
        text-align: left;
    }
    .tl__item--right .tl__year-col,
    .tl__item--left .tl__year-col {
        padding-left: 0;
        padding-right: 0;
        justify-content: flex-start;
        text-align: left;
    }
    .tl__card-col {
        width: 100%;
        padding: 0;
    }
    .tl__item--right .tl__card-col,
    .tl__item--left .tl__card-col {
        padding-left: 0;
        padding-right: 0;
        margin: 0;
    }
}