.timeline {
    position: relative;
    padding-left: 28px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 3px;
    top: 6px;
    bottom: 12px;
    width: 1px;
    background: linear-gradient(to bottom, #00d4aa, rgba(0, 212, 170, 0.08));
}

.tl-item {
    position: relative;
    margin-bottom: 16px;
}

.tl-item::before {
    content: '';
    position: absolute;
    left: -25px;
    top: 2px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgb(16, 25, 45);
    border: 1.5px solid #00d4aa;
}

.tl-item.current::before {
    background: #00d4aa;
    /* box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.15); */
    animation: dot-pulse 2.5s ease-in-out infinite;
}

@keyframes dot-pulse {
    0%   { box-shadow: 0 0 0 0px rgba(0, 212, 170, 0.55); }
    100% { box-shadow: 0 0 0 10px rgba(0, 212, 170, 0); }
}

.tl-sub {
    margin-top: 8px;
    margin-left: 14px;
    padding-left: 14px;
    border-left: 1px dashed rgba(0, 212, 170, 0.25);
}