.twt-bc{box-sizing:border-box;max-width:850px;margin:24px auto;padding:28px;border:1px solid #e2e8f0;border-radius:18px;background:#fff;color:#18243a;box-shadow:0 10px 32px rgba(15,23,42,.06);font-family:inherit}.twt-bc *{box-sizing:border-box}.twt-bc-head h2{margin:0 0 6px;font-size:clamp(23px,3vw,32px);font-weight:750;color:#14233e}.twt-bc-head p{margin:0 0 22px;color:#64748b;font-size:15px}.twt-bc-tabs{display:flex;gap:8px;padding:5px;background:#f1f5f9;border-radius:12px;margin-bottom:22px}.twt-bc-tabs button{flex:1;border:0;border-radius:9px;padding:12px 6px;background:transparent;color:#475569;font-size:15px;font-weight:700;cursor:pointer}.twt-bc-tabs button.active{background:#153d73;color:white;box-shadow:0 2px 7px #0001}.twt-bc-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.twt-bc-field{display:flex;flex-direction:column;gap:7px;font-size:14px;font-weight:650;color:#334155}.twt-bc-field input,.twt-bc-field select{display:block;width:100%;height:46px;border:1px solid #cbd5e1;border-radius:9px;background:#fff;color:#0f172a;font:inherit;font-size:16px;font-weight:450;padding:0 12px;outline-offset:2px}.twt-bc-field input[readonly]{background:#f8fafc;color:#64748b}.twt-bc-field input:focus,.twt-bc-field select:focus{outline:2px solid #93c5fd;border-color:#2563eb}.twt-bc-field[hidden]{display:none}.twt-bc-result{display:flex;flex-direction:column;gap:7px;align-items:center;justify-content:center;background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:22px 12px;margin-top:23px;text-align:center}.twt-bc-result span{font-size:14px;font-weight:700;color:#475569}.twt-bc-result strong{font-size:clamp(29px,5vw,42px);font-weight:800;color:#153d73;overflow-wrap:anywhere}.twt-bc-result small{font-size:12px;color:#64748b}.twt-bc-actions{display:flex;justify-content:flex-end;margin-top:14px}.twt-bc-actions button{background:white;border:1px solid #94a3b8;color:#334155;border-radius:8px;padding:10px 20px;cursor:pointer;font-size:14px}.twt-bc-note{font-size:12px;line-height:1.6;color:#64748b;margin:16px 0 0}@media(max-width:580px){.twt-bc{padding:17px;margin:12px auto}.twt-bc-fields{grid-template-columns:1fr;gap:14px}.twt-bc-tabs button{padding:10px 3px}.twt-bc-result{margin-top:18px}}