.sev-timeline {
    position: relative;
    width: 100%;
    max-width: 1100px;
    margin: 120px auto;
    padding: 0 20px;
}
.sev-timeline-line {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: #e9e9e9;
    overflow: hidden;
}
.sev-timeline-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: #3534FF;
    transition: height 0.15s linear;
}
.sev-timeline-item {
    position: relative;
    width: 50%;
    padding: 40px 60px;
    box-sizing: border-box;
}
.sev-timeline-item:nth-child(odd) { left: 0; text-align: right; }
.sev-timeline-item:nth-child(even) { left: 50%; }
.sev-timeline-content h3 { margin-bottom: 10px; font-weight: 700; }
.sev-timeline-content p { margin: 0; line-height: 1.6; font-size:16px; }
.sev-timeline-dot { position: absolute; top: 134px; width: 18px; height: 18px; background: #e9e9e9; border-radius: 50%; transition: background 0.3s ease; }
.izquierda { right: -9px; }
.derecha { left: -9px; }
.sev-timeline-item.active .sev-timeline-dot { background: #3534FF; }
.sev-readmore { margin-top:10px; padding:6px 14px; border:0; background:#3534FF; color:#fff; cursor:pointer; }
.sev-modal{ display:none; position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.6); z-index:9999; }
.sev-modal-inner{ background:#fff; max-width:700px; margin:120px auto; padding:30px; position:relative; height: 80vh; overflow-y: scroll; }
.sev-close{ position:absolute; top:10px; right:15px; cursor:pointer; font-size:22px; }
.sev-modal-inner, .sev-modal-content, .sev-modal-inner h3 { text-align: left !important; }
@media (max-width:768px){
    .sev-timeline-item{ width:100%; left:0 !important; padding:40px 20px 40px 60px; text-align:left !important; }
    .sev-timeline-line{ left:20px; transform:none; }
    .sev-timeline-dot{ left:-7px; transform:none; top: 214px; }
}