.bond-hotspot{cursor:pointer;pointer-events:all;outline:none}
.bond-hotspot line{stroke:transparent;stroke-width:24}
.bond-hotspot circle{fill:rgba(48,151,181,.08);stroke:rgba(48,151,181,.35);stroke-width:1.5;transition:fill .2s,stroke .2s}
.bond-hotspot:hover circle,.bond-hotspot:focus circle,.bond-hotspot.selected circle{fill:rgba(48,151,181,.28);stroke:#3097b5;stroke-width:2.5}