.bnt{--b-accent:#067957;--b-accent-h:#055f45;--b-soft:#ecfbf5;--b-green:#00a978;--b-ink:#172033;--b-muted:#5b687e;--b-line:#dfe5ec;--b-bg:#f8fafc;--b-warn:#976000;--b-bad:#b42318;--b-bad-g:#e5484d;
box-sizing:border-box;max-width:880px;margin:0 auto 1.5em;padding:16px;background:#fff;border:1px solid var(--b-line);border-radius:14px;color:var(--b-ink);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;box-shadow:0 1px 3px rgba(23,32,51,.06)}
.bnt *,.bnt *::before,.bnt *::after{box-sizing:border-box}
.bnt .bnt-title{margin:0 0 4px;font-size:1.45em;line-height:1.2;color:var(--b-ink)}
.bnt .bnt-intro{margin:0 0 12px;color:var(--b-muted)}
.bnt-panel{background:var(--b-bg);border:1px solid var(--b-line);border-radius:12px;padding:14px;text-align:center}
.bnt-top{display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap}
.bnt-top label{font-weight:700}
.bnt select,.bnt input[type=number]{font:inherit;min-height:42px;padding:6px 10px;border:1px solid #c9d3de;border-radius:8px;background:#fff;color:var(--b-ink);max-width:100%}
.bnt-readout{margin-top:10px}
.bnt-value{font-size:clamp(52px,15vw,88px);font-weight:800;line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.bnt-unit{font-size:1.2em;font-weight:700;color:var(--b-muted)}
.bnt-progress{height:10px;border-radius:999px;background:#e6ecf1;margin:12px 0 0;overflow:hidden}
.bnt-progress span{display:block;height:100%;width:0;background:var(--b-green);transition:width .2s linear}
.bnt-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:12px}
.bnt-end{justify-content:flex-start}
.bnt .bnt-btn{appearance:none;min-height:44px;padding:8px 16px;border:1px solid var(--b-line);border-radius:10px;background:#fff;color:var(--b-ink);font:inherit;font-weight:600;cursor:pointer}
.bnt .bnt-btn:hover{border-color:var(--b-accent);color:var(--b-accent)}
.bnt .bnt-btn:disabled{opacity:.5;cursor:not-allowed}
.bnt .bnt-primary{min-width:190px;background:var(--b-accent);border-color:var(--b-accent);color:#fff;font-size:1.05em}
.bnt .bnt-primary:hover{background:var(--b-accent-h);color:#fff}
.bnt.is-running .bnt-primary{background:#fff;color:var(--b-bad);border-color:var(--b-bad-g)}
.bnt .bnt-btn:focus-visible,.bnt select:focus-visible,.bnt input:focus-visible,.bnt summary:focus-visible,.bnt a:focus-visible{outline:3px solid var(--b-accent);outline-offset:2px}
.bnt-status{margin:10px 0 0;font-size:.9em;color:var(--b-muted);min-height:1.5em}
.bnt-status.is-error{color:var(--b-bad)}
.bnt-result{margin-top:14px}
.bnt-verdict{margin:0 0 12px;padding:12px 14px;border-radius:10px;background:var(--b-soft);border:1px solid #cdeee0;font-weight:600}
.bnt-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0 0 12px;padding:0}
.bnt-stats div{border:1px solid var(--b-line);border-radius:10px;padding:8px 10px}
.bnt-stats dt{font-size:.8em;color:var(--b-muted);margin:0}
.bnt-stats dd{margin:0;font-size:1.2em;font-weight:700;font-variant-numeric:tabular-nums}
.bnt-targets{width:100%;border-collapse:collapse;margin:0 0 14px;font-size:.95em}
.bnt-targets caption{text-align:left;font-weight:700;padding-bottom:6px}
.bnt-targets th,.bnt-targets td{text-align:left;padding:8px;border-bottom:1px solid var(--b-line);vertical-align:top}
.bnt-targets th{font-size:.8em;color:var(--b-muted);font-weight:600}
.bnt-targets tr[data-fit=ok] td:last-child{color:var(--b-accent);font-weight:700}
.bnt-targets tr[data-fit=no] td:last-child{color:var(--b-bad);font-weight:700}
.bnt-label{font-weight:700;margin:0 0 6px}
.bnt-band{display:grid;grid-template-columns:1fr 3.2em;gap:4px 10px;align-items:center;margin-bottom:8px;font-size:.92em}
.bnt-band span{grid-column:1/-1;color:var(--b-muted)}
.bnt-bar{height:10px;border-radius:999px;background:#e6ecf1;overflow:hidden}
.bnt-bar i{display:block;height:100%;width:0;background:var(--b-accent)}
.bnt-band output{font-weight:700;text-align:right;font-variant-numeric:tabular-nums}
.bnt-tips{margin:10px 0 0;padding:10px 14px;border-left:4px solid var(--b-warn);background:#fff8ea;border-radius:0 8px 8px 0;font-size:.95em}
.bnt-box{margin-top:12px;border:1px solid var(--b-line);border-radius:10px;padding:0 14px}
.bnt-box summary{cursor:pointer;font-weight:700;padding:12px 0}
.bnt-box[open]{padding-bottom:12px}
.bnt-field{margin-bottom:10px}
.bnt-field label{display:block;font-weight:700;margin-bottom:4px}
.bnt-field select{width:100%}
.bnt-field input[type=number]{width:8em}
.bnt-small{display:block;font-size:.85em;color:var(--b-muted);margin:6px 0 0}
.bnt a{color:var(--b-accent)}
@media (min-width:640px){.bnt{padding:22px}.bnt-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (prefers-reduced-motion:reduce){.bnt-progress span{transition:none}}