:root{--bhv-primary:#294822;--bhv-primary-dark:#1b5e20;--bhv-primary-light:#c1df8b;--bhv-accent:#66bb6a;--bhv-text:#1a1a1a;--bhv-text-muted:#5f6368;--bhv-negative:#c62828;--bhv-bg:#fff;--bhv-card-bg:#fcfaf4;--bhv-card-accent:#c1df8b;--bhv-border:#98ca3e;--bhv-shadow:0 2px 12px rgba(46,125,50,.1);--bhv-radius:10px;--bhv-radius-sm:6px;--bhv-font-heading:"Montserrat","Trebuchet MS",sans-serif;--bhv-font-body:"Open Sans","Segoe UI",sans-serif;--bhv-transition:0.18s ease}html{scroll-behavior:smooth}.bhv-calc-section{background-color:var(--bhv-bg);color:var(--bhv-text);font-family:var(--bhv-font-body);padding:30px 20px;-webkit-font-smoothing:antialiased}.bhv-calc-container{margin:0 auto;max-width:1100px}.bhv-calc-header{margin-bottom:20px;text-align:center}.bhv-calc-title{color:var(--bhv-primary-dark);font-family:var(--bhv-font-heading);font-size:clamp(1.6rem,3vw,2.2rem);font-weight:700;line-height:1.2;margin:0 0 12px}.bhv-calc-subtitle{color:var(--bhv-text-muted);font-size:1rem;line-height:1.6;margin:0 auto;max-width:1050px}.info-btn{align-items:center;color:#888;cursor:pointer;display:inline-flex;font-size:15px;font-weight:700;height:17px;justify-content:center;margin-left:3px;position:relative;user-select:none;width:17px}.info-btn:after{background:#222;border-radius:6px;bottom:calc(100% + 8px);box-shadow:0 2px 8px rgba(0,0,0,.2);color:#fff;content:attr(data-tooltip);font-size:12px;font-weight:400;padding:7px 11px;white-space:nowrap;z-index:10}.info-btn:after,.info-btn:before{left:50%;opacity:0;pointer-events:none;position:absolute;transform:translateX(-50%);transition:opacity .2s ease}.info-btn:before{border:5px solid transparent;border-top-color:#222;bottom:calc(100% + 3px);content:""}.info-btn:hover:after,.info-btn:hover:before{opacity:1}.bhv-label-row{align-items:center;display:flex;gap:6px}.info-btn.active:after,.info-btn.active:before{opacity:1}.bhv-calc-body{align-items:start;display:grid;gap:24px;grid-template-columns:1fr 1fr}.bhv-calc-inputs{gap:12px}.bhv-calc-inputs,.bhv-field-group{display:flex;flex-direction:column}.bhv-field-group{gap:4px}.bhv-label{color:var(--bhv-text);font-family:var(--bhv-font-body);font-size:.78rem;font-weight:600;gap:8px;justify-content:space-between}.bhv-input-wrap,.bhv-label{align-items:center;display:flex}.bhv-input-wrap{background:#fff;border:1.5px solid var(--bhv-border);border-radius:var(--bhv-radius-sm);overflow:hidden;position:relative;transition:border-color var(--bhv-transition),box-shadow var(--bhv-transition)}.bhv-input-wrap:focus-within{border-color:var(--bhv-primary);box-shadow:0 0 0 3px rgba(46,125,50,.12)}.bhv-affix{align-items:center;background:#f4f7f4;border-right:1.5px solid var(--bhv-border);color:var(--bhv-text-muted);display:flex;font-size:.82rem;font-weight:500;height:100%;padding:0 9px;user-select:none;white-space:nowrap}.bhv-suffix .bhv-affix{border-left:1.5px solid var(--bhv-border);border-right:none}.bhv-input{-moz-appearance:textfield;background:transparent;border:none;color:var(--bhv-text);flex:1;font-family:var(--bhv-font-body);font-size:.85rem;min-width:0;outline:none;padding:7px 10px}.bhv-input::-webkit-inner-spin-button,.bhv-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.bhv-slider-value{background:var(--bhv-primary-light);border-radius:20px;color:var(--bhv-primary);font-size:.82rem;font-weight:700;padding:3px 10px;white-space:nowrap}.bhv-slider-wrap{display:flex;flex-direction:column;gap:6px}.bhv-slider{-webkit-appearance:none;appearance:none;background:linear-gradient(to right,var(--bhv-primary) 0,var(--bhv-primary) var(--slider-pct,100%),var(--bhv-border) var(--slider-pct,100%),var(--bhv-border) 100%);border-radius:3px;cursor:pointer;height:6px;margin:3px 0 2px;outline:none;width:100%}.bhv-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;background:var(--bhv-primary);border:2px solid #fff;border-radius:50%;box-shadow:0 1px 6px rgba(46,125,50,.35);cursor:pointer;height:20px;transition:transform var(--bhv-transition),box-shadow var(--bhv-transition);width:20px}.bhv-slider::-webkit-slider-thumb:hover{box-shadow:0 2px 10px rgba(46,125,50,.45);transform:scale(1.15)}.bhv-slider::-moz-range-thumb{background:var(--bhv-primary);border:2px solid #fff;border-radius:50%;box-shadow:0 1px 6px rgba(46,125,50,.35);cursor:pointer;height:20px;width:20px}.bhv-slider-bounds{color:var(--bhv-text-muted);display:flex;font-size:.75rem;justify-content:space-between}.bhv-toggle-group{display:flex;gap:10px}.bhv-toggle-btn{background:#fff;border:1.5px solid var(--bhv-border);border-radius:var(--bhv-radius-sm);color:var(--bhv-text-muted);cursor:pointer;flex:1;font-family:var(--bhv-font-body);font-size:.78rem;font-weight:500;line-height:1.3;padding:7px 10px;text-align:center;transition:all var(--bhv-transition)}.bhv-toggle-btn:hover{background:var(--bhv-primary-light);border-color:var(--bhv-accent);color:var(--bhv-primary)}.bhv-toggle-btn.bhv-toggle-active{background:var(--bhv-primary);border-color:var(--bhv-primary);box-shadow:0 2px 8px rgba(46,125,50,.25);color:#fff;font-weight:700}.bhv-calc-outputs{display:flex;flex-direction:column;gap:10px}.bhv-result-card{background:var(--bhv-card-bg);border:1.5px solid var(--bhv-border);border-radius:var(--bhv-radius);box-shadow:var(--bhv-shadow);display:flex;flex-direction:column;gap:3px;padding:12px 16px;transition:transform var(--bhv-transition),box-shadow var(--bhv-transition)}.bhv-result-card:hover{box-shadow:0 6px 20px rgba(46,125,50,.13);transform:translateY(-2px)}.bhv-result-card--accent{background:var(--bhv-card-accent);border-color:var(--bhv-accent)}.bhv-result-label{color:var(--bhv-text-muted);font-size:.72rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase}.bhv-result-value{color:var(--bhv-primary-dark);font-family:var(--bhv-font-heading);font-size:1.3rem;font-weight:700;line-height:1.1;transition:color var(--bhv-transition)}.bhv-result-value.is-negative{color:var(--bhv-negative)}.bhv-result-value.is-na{color:var(--bhv-text-muted);font-size:1.3rem}.bhv-disclaimer{color:var(--bhv-text-muted);font-size:.72rem;line-height:1.5;margin:2px 0 0}@media (max-width:768px){.bhv-calc-section{padding:40px 16px}.bhv-calc-body{gap:32px;grid-template-columns:1fr}.bhv-calc-header{margin-bottom:32px}.bhv-result-value{font-size:1.4rem}.bhv-toggle-group{flex-direction:column;gap:8px}}@media (max-width:400px){.bhv-calc-title{font-size:1.4rem}.bhv-result-value{font-size:1.25rem}}.bhv-modal-overlay{align-items:center;background:rgba(0,0,0,.65);display:flex;inset:0;justify-content:center;padding:20px;position:fixed;z-index:9999}.bhv-modal-overlay.hidden{display:none}.bhv-modal-box{background:var(--bhv-bg);border-radius:var(--bhv-radius);border-top:5px solid var(--bhv-primary);box-shadow:0 8px 40px rgba(0,0,0,.22);max-height:90vh;max-width:480px;overflow-y:auto;padding:24px 22px;width:100%}.bhv-modal-title{color:var(--bhv-primary-dark);font-family:var(--bhv-font-heading);font-size:.95rem;font-weight:700;line-height:1.4;margin:0 0 10px}.bhv-modal-body{color:var(--bhv-text-muted);font-family:var(--bhv-font-body);font-size:.78rem;line-height:1.5;margin-bottom:8px}.bhv-modal-checks{background:var(--bhv-card-bg);border:1.5px solid var(--bhv-border);border-radius:var(--bhv-radius-sm);display:flex;flex-direction:column;gap:10px;margin:12px 0 16px;padding:14px}.bhv-check-label{align-items:flex-start;color:var(--bhv-text);cursor:pointer;display:flex;font-family:var(--bhv-font-body);font-size:.78rem;gap:8px;line-height:1.45}.bhv-check{accent-color:var(--bhv-primary);cursor:pointer;flex-shrink:0;height:14px;margin-top:3px;width:14px}.bhv-modal-btn{background:var(--bhv-primary);border:none;border-radius:var(--bhv-radius-sm);color:#fff;cursor:pointer;font-family:var(--bhv-font-heading);font-size:.85rem;font-weight:700;letter-spacing:.02em;padding:10px;transition:background var(--bhv-transition),opacity var(--bhv-transition);width:100%}.bhv-modal-btn:disabled{background:#ccc;cursor:not-allowed;opacity:.65}.bhv-modal-btn:not(:disabled):hover{background:var(--bhv-primary-dark)}.bhv-lock-overlay{background:transparent;cursor:not-allowed;display:none;inset:0;position:absolute;z-index:100}@media (max-width:600px){.bhv-modal-box{padding:24px 18px}.bhv-modal-title{font-size:1rem}.bhv-modal-checks{padding:14px}}.bhv-notice-box{background:#f5f5f5;border:1.5px solid #d0d0d0;border-left:5px solid var(--bhv-primary-dark);border-radius:var(--bhv-radius-sm);margin-top:12px;padding:16px 20px}.bhv-notice-title{color:var(--bhv-primary-dark);font-family:var(--bhv-font-heading);font-size:.78rem;font-weight:700;letter-spacing:.04em;margin:0 0 6px}.bhv-notice-body{color:var(--bhv-text-muted);font-family:var(--bhv-font-body);font-size:.78rem;line-height:1.5;margin:0}.bhv-cert-box{background:#f5f5f5;border:1.5px solid #d0d0d0;border-left:5px solid var(--bhv-primary-dark);border-radius:var(--bhv-radius-sm);margin-bottom:36px;margin-top:12px;padding:16px 20px}.bhv-cert-title{color:var(--bhv-primary-dark);font-family:var(--bhv-font-heading);font-size:.78rem;font-weight:700;letter-spacing:.04em;margin:0 0 6px}.bhv-cert-body{color:var(--bhv-text-muted);font-family:var(--bhv-font-body);font-size:.78rem;line-height:1.5;margin:0}