.bac-wrap{max-width:540px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:#1a1a1a}
.bac-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.bac-icon{font-size:34px;line-height:1}
.bac-title{font-size:22px!important;font-weight:600!important;margin:0 0 3px!important;padding:0!important;border:none!important;color:#1a1a1a!important}
.bac-sub{font-size:13px;color:#666;margin:0}
.bac-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:4px}
@media(max-width:420px){.bac-grid{grid-template-columns:1fr}}
.bac-lbl{display:block;font-size:13px;font-weight:500;color:#555;margin-bottom:5px}
.bac-iw{position:relative}
.bac-iw input{width:100%;box-sizing:border-box;padding:9px 38px 9px 12px;border:1px solid #d0d0d0;border-radius:8px;font-size:14px;color:#1a1a1a;background:#fff;outline:none;transition:border-color .15s;-moz-appearance:textfield}
.bac-iw input::-webkit-inner-spin-button,.bac-iw input::-webkit-outer-spin-button{-webkit-appearance:none}
.bac-iw input:focus{border-color:#dc2626;box-shadow:0 0 0 3px rgba(220,38,38,.1)}
.bac-suf{position:absolute;right:8px;top:50%;transform:translateY(-50%);font-size:11px;color:#999;pointer-events:none}
.bac-toggle{display:flex;border:1px solid #d0d0d0;border-radius:8px;overflow:hidden}
.bac-tbtn{flex:1;padding:9px 8px;font-size:13px;font-weight:500;border:none;border-right:1px solid #d0d0d0;background:#fff;color:#555;cursor:pointer;transition:background .13s}
.bac-tbtn:last-child{border-right:none}
.bac-tbtn.act{background:#fee2e2;color:#b91c1c;font-weight:600}
.bac-result-card{border-radius:12px;padding:18px 22px;color:#fff;margin-top:12px;text-align:center;animation:bac-in .22s ease}
@keyframes bac-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
.bac-safe{background:linear-gradient(135deg,#059669,#065F46)}
.bac-caution{background:linear-gradient(135deg,#D97706,#92400E)}
.bac-danger{background:linear-gradient(135deg,#dc2626,#991b1b)}
.bac-res-main{font-size:40px;font-weight:800;font-family:monospace;margin-bottom:4px}
.bac-res-sub{font-size:13px;opacity:.85;margin-bottom:6px}
.bac-res-status{font-size:13px;background:rgba(255,255,255,.2);border-radius:8px;padding:6px 14px;display:inline-block;font-weight:700}
.bac-warn-box{background:#fef2f2;border:1px solid #fca5a5;border-radius:9px;padding:12px 14px;font-size:13px;color:#991b1b;line-height:1.5;margin-top:12px;font-weight:600}
.bac-disc{font-size:11px;color:#bbb;text-align:center;margin-top:8px}