.hc-vn-viz {
    height: 120px;
    position: relative;
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}
.hc-vn-circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    opacity: 0.6;
    color: #fff;
}
.hc-vn-circle.a { background: #3498db; left: 30%; }
.hc-vn-circle.b { background: #e74c3c; right: 30%; }

.hc-vn-stats {
    border-top: 1px solid #eee;
    padding-top: 15px;
}
.hc-vn-stat {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 5px;
}
.hc-vn-stat b { color: #2c3e50; }