.usb-panel{margin:20px 0;padding:20px;border:1px solid #b8cce5;border-radius:14px;background:#f5f9ff;color:#183653}
.usb-panel h2{font-size:20px;margin:0 0 8px}.usb-panel p{margin:8px 0;line-height:1.65}
.usb-batches{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px;margin:14px 0}
.usb-card{display:block;padding:13px;background:white;border:1px solid #d1dfef;border-radius:10px;line-height:1.7}
.usb-card.is-active{border:2px solid #2177bd;background:#edf6ff}.usb-card.is-error{border-color:#c98530}
.usb-card strong{margin-left:6px}.usb-card small{display:block;color:#54697c;overflow-wrap:anywhere}
.usb-actions{display:flex;gap:8px;flex-wrap:wrap}.usb-actions button{padding:8px 13px;border:1px solid #aac3da;border-radius:8px;background:white;color:#17496e;cursor:pointer}
.usb-actions button:disabled{opacity:.45;cursor:default}.usb-error{color:#a33b13}.usb-progress{padding:12px;background:white;border-radius:8px;margin-top:12px}
.usb-device-list{max-height:320px;overflow:auto}.usb-device{display:grid;grid-template-columns:1fr 1fr;gap:10px;border-bottom:1px solid #e3eaf3;padding:6px}
.usb-events{font-size:12px;color:#50657a;max-height:100px;overflow:auto}