:root{--bf-navy:#082b55;--bf-navy-dark:#051f3e;--bf-gold:#d2a02e;--bf-bg:#f3f6f9;--bf-paper:#fff;--bf-ink:#17212c;--bf-muted:#62717e;--bf-line:#d8e1e8;--bf-green:#176642;--bf-red:#9b3030;--bf-shadow:0 18px 50px rgba(8,43,85,.09);--bf-font:"Arial Nova","Avenir Next","Helvetica Neue",Arial,sans-serif}
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#d3dde5;border-radius:10px;background:#f8fafb;color:var(--bf-navy);font:inherit;font-weight:900;cursor:pointer}.bf-preset:hover,.bf-preset:focus-visible{border-color:#9fb2c1;background:#eef4f8}.bf-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;margin-top:20px}.bf-field{min-width:0}.bf-field.full{grid-column:1/-1}.bf-input-wrap{display:flex;align-items:stretch;border:1px solid #cfdbe4;border-radius:12px;background:#fff;overflow:hidden;transition:border-color .15s,box-shadow .15s}.bf-input-wrap:focus-within{border-color:#7696ae;box-shadow:0 0 0 3px rgba(8,43,85,.08)}.bf-input-wrap input{width:100%;min-width:0;height:50px;padding:10px 12px;border:0;outline:0;background:transparent;color:var(--bf-ink);font:inherit;font-size:1rem;font-weight:800}.bf-unit{display:grid;place-items:center;min-width:48px;padding:0 10px;border-left:1px solid #dde5eb;background:#f5f8fa;color:#60707d;font-size:.76rem;font-weight:900}.bf-length-pair{display:grid;grid-template-columns:1fr 1fr;gap:8px}.bf-optional{margin-top:22px;padding-top:19px;border-top:1px solid var(--bf-line)}.bf-optional summary{cursor:pointer;color:var(--bf-navy);font-weight:900}.bf-optional[open] summary{margin-bottom:14px}.bf-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}.bf-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 16px;border:1px solid #cfd9e1;border-radius:12px;background:#fff;color:var(--bf-navy);font:inherit;font-weight:900;text-decoration:none;cursor:pointer}.bf-btn.primary{background:var(--bf-navy);border-color:var(--bf-navy);color:#fff}.bf-btn.ghost{background:#f5f8fa}.bf-btn.danger{color:var(--bf-red)}.bf-big{margin-top:17px;color:#f3c65a;font-size:clamp(3.3rem,8vw,5.4rem);line-height:.9;font-weight:950;letter-spacing:-.06em}.bf-big small{font-size:.24em;letter-spacing:.02em;color:#dce8ef}.bf-result-line{display:flex;justify-content:space-between;gap:18px;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:.9rem}.bf-result-line span{color:#c9d8e3}.bf-result-line strong{text-align:right}.bf-result-line:last-of-type{border-bottom:0}.bf-formula{margin-top:18px;padding:13px;border:1px solid rgba(255,255,255,.17);border-radius:13px;background:rgba(255,255,255,.07);color:#dce7ef;font-size:.82rem}.bf-tally{margin-top:22px;padding:24px}.bf-tally-head{display:flex;align-items:end;justify-content:space-between;gap:16px}.bf-tally-head .bf-actions{margin:0}.bf-empty{margin:18px 0 0;padding:22px;border:1px dashed #cad6df;border-radius:14px;background:#f8fafb;color:#687783;text-align:center}.bf-table-wrap{margin-top:18px;overflow-x:auto}.bf-table{width:100%;border-collapse:collapse;font-size:.88rem}.bf-table th,.bf-table td{padding:11px 9px;border-bottom:1px solid #e1e7ec;text-align:left;white-space:nowrap}.bf-table th{color:#647480;font-size:.71rem;text-transform:uppercase;letter-spacing:.08em}.bf-table td:last-child,.bf-table th:last-child{text-align:right}.bf-remove{border:0;background:transparent;color:var(--bf-red);font:inherit;font-weight:900;cursor:pointer}.bf-totals{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:17px}.bf-total{padding:15px;border-radius:14px;background:#f0f4f7}.bf-total span{display:block;color:#697985;font-size:.72rem;font-weight:850;text-transform:uppercase;letter-spacing:.07em}.bf-total strong{display:block;margin-top:4px;color:var(--bf-navy);font-size:1.35rem}.bf-info{padding:54px 0;background:#fff}.bf-info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.bf-info-card{padding:22px;border:1px solid var(--bf-line);border-radius:18px;background:#fbfcfd}.bf-info-card h2,.bf-info-card h3{margin:0;color:var(--bf-navy);font-size:1.18rem}.bf-info-card p{margin:10px 0 0;color:var(--bf-muted);font-size:.9rem}.bf-callout{margin-top:20px;padding:18px;border-left:4px solid var(--bf-gold);border-radius:12px;background:#fff8e7;color:#5e4b1a;font-size:.88rem}.bf-toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,18px);z-index:120;padding:10px 14px;border-radius:999px;background:var(--bf-navy-dark);color:#fff;font-size:.84rem;font-weight:850;opacity:0;pointer-events:none;transition:.2s}.bf-toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:900px){.bf-layout{grid-template-columns:1fr}.bf-result-card{position:static}.bf-info-grid{grid-template-columns:1fr}.bf-totals{grid-template-columns:1fr 1fr}}
@media(max-width:700px){.bf-site{width:min(calc(100% - 22px),1120px)}.bf-topbar-inner{min-height:82px}.bf-logo{width:168px}.bf-logo img{width:168px}.bf-product-name{font-size:8.5px;letter-spacing:.16em}.bf-hero{padding:38px 0 28px}.bf-main{padding-top:22px}.bf-calc,.bf-result-card,.bf-tally{padding:19px}.bf-grid{grid-template-columns:1fr}.bf-field.full{grid-column:auto}.bf-tally-head{display:block}.bf-tally-head .bf-actions{margin-top:12px}.bf-totals{grid-template-columns:1fr}.bf-btn{flex:1}.bf-nav a{font-size:.76rem;padding:8px 10px}}
@media(max-width:420px){.bf-logo{width:150px}.bf-logo img{width:150px}.bf-product-name{font-size:7.8px}.bf-nav a{font-size:.72rem;padding:7px 9px}.bf-preset{flex:1 0 calc(25% - 7px);padding-inline:7px}.bf-length-pair{grid-template-columns:1fr 1fr}}