:root{--sfr-accent:#7C2D12;--sfr-light:rgba(124,45,18,0.08);--sfr-green:#00875A;--sfr-orange:#D97706;--sfr-navy:#002868;--sfr-border:#E0E4E8;--sfr-bg:#F7F9FC;--sfr-white:#fff;--sfr-text:#1D1D1F;--sfr-muted:#5F6368;}
.sfr-hero{background:linear-gradient(135deg,#1C0806 0%,#7C2D12 52%,#92400E 100%);padding:64px 24px 56px;position:relative;overflow:hidden;}
.sfr-hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23fff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");pointer-events:none;}
.sfr-hero-inner{max-width:1100px;margin:0 auto;position:relative;}
.sfr-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.13);border:1px solid rgba(255,255,255,0.22);font-size:12px;font-weight:600;letter-spacing:.5px;padding:5px 14px;border-radius:20px;margin-bottom:18px;font-family:'Montserrat',sans-serif;}
.sfr-pills{display:flex;flex-wrap:wrap;gap:9px;}
.sfr-pill{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.10);border:1px solid rgba(255,255,255,0.18);font-size:12.5px;padding:6px 13px;border-radius:8px;}
.sfr-wrap{max-width:1100px;margin:0 auto;padding:0 24px;}
.sfr-calc-section{background:var(--sfr-bg);padding:52px 0;}
.sfr-calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start;}
.sfr-presets{margin-bottom:20px;}
.sfr-presets-label{font-size:12px;font-weight:700;color:var(--sfr-muted);margin-bottom:8px;font-family:'Montserrat',sans-serif;text-transform:uppercase;letter-spacing:.4px;}
.sfr-preset-btns{display:flex;flex-wrap:wrap;gap:7px;}
.sfr-preset-btn{padding:6px 12px;background:var(--sfr-white);border:1.5px solid var(--sfr-border);border-radius:20px;font-size:12px;font-weight:600;color:var(--sfr-muted);cursor:pointer;font-family:'Montserrat',sans-serif;transition:all .2s;white-space:nowrap;}
.sfr-preset-btn:hover,.sfr-preset-btn.active{background:var(--sfr-accent);border-color:var(--sfr-accent);color:#fff;}
.sfr-box{background:var(--sfr-white);border-radius:14px;padding:28px;border:1.5px solid var(--sfr-border);}
.sfr-box-dark{background:var(--sfr-navy);border-radius:14px;padding:28px;}
.sfr-box h2{font-family:'Montserrat',sans-serif;font-size:16px;font-weight:800;color:var(--sfr-accent);margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid var(--sfr-light);}
.sfr-field{margin-bottom:16px;}
.sfr-field label{display:block;font-size:13px;font-weight:700;color:var(--sfr-text);margin-bottom:6px;font-family:'Montserrat',sans-serif;}
.sfr-hint{font-size:11.5px;color:var(--sfr-muted);margin-top:4px;line-height:1.5;}
.sfr-fields-2col{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
.sfr-input-wrap{display:flex;border:1.5px solid var(--sfr-border);border-radius:8px;overflow:hidden;}
.sfr-input-wrap input{flex:1;padding:10px 14px;border:none;font-size:15px;font-family:'Inter',sans-serif;color:var(--sfr-text);outline:none;min-width:0;}
.sfr-input-wrap:focus-within{border-color:var(--sfr-accent);box-shadow:0 0 0 3px var(--sfr-light);}
.sfr-suffix{padding:10px 12px;background:var(--sfr-bg);font-size:13px;font-weight:700;color:var(--sfr-muted);border-left:1.5px solid var(--sfr-border);white-space:nowrap;}
.sfr-weight-row{display:flex;gap:10px;align-items:stretch;}
.sfr-weight-row input{flex:1;padding:11px 14px;border:1.5px solid var(--sfr-border);border-radius:8px;font-size:16px;font-family:'Inter',sans-serif;color:var(--sfr-text);outline:none;transition:border .2s;}
.sfr-weight-row input:focus{border-color:var(--sfr-accent);box-shadow:0 0 0 3px var(--sfr-light);}
.sfr-unit-grp{display:flex;border:1.5px solid var(--sfr-border);border-radius:8px;overflow:hidden;}
.sfr-unit-grp label{display:flex;align-items:center;padding:0 16px;cursor:pointer;font-size:13px;font-weight:600;color:var(--sfr-muted);transition:all .2s;white-space:nowrap;}
.sfr-unit-grp label:not(:last-child){border-right:1px solid var(--sfr-border);}
.sfr-unit-grp input[type="radio"]{display:none;}
.sfr-unit-grp label.active{background:var(--sfr-accent);color:#fff;}
.sfr-select{width:100%;padding:11px 14px;border:1.5px solid var(--sfr-border);border-radius:8px;font-size:13px;font-family:'Inter',sans-serif;color:var(--sfr-text);background:var(--sfr-white);outline:none;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9'%3E%3Cpath d='M1 1l6 6 6-6' stroke='%235F6368' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;}
.sfr-select:focus{border-color:var(--sfr-accent);box-shadow:0 0 0 3px var(--sfr-light);outline:none;}
.sfr-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.sfr-btn-primary{padding:13px 24px;background:var(--sfr-accent);color:#fff;border:none;border-radius:8px;font-family:'Montserrat',sans-serif;font-weight:800;font-size:14px;cursor:pointer;transition:all .2s;width:100%;}
.sfr-btn-primary:hover{background:#9B3A0F;transform:translateY(-1px);}
.sfr-btn-reset{padding:13px 18px;background:transparent;color:var(--sfr-muted);border:1.5px solid var(--sfr-border);border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;font-family:'Montserrat',sans-serif;flex:1;}
.sfr-btn-reset:hover{border-color:var(--sfr-accent);color:var(--sfr-accent);}
.sfr-btn-pdf{padding:11px 18px;background:#002868;color:#fff;border:none;border-radius:8px;font-size:13px;font-weight:700;cursor:pointer;font-family:'Montserrat',sans-serif;display:none;flex:1;}
.sfr-btn-pdf:hover{background:#003580;}
.sfr-btn-wa{padding:11px 18px;background:#25D366;color:#fff;border:none;border-radius:8px;font-size:13px;font-weight:700;cursor:pointer;font-family:'Montserrat',sans-serif;display:none;flex:1;}
.sfr-btn-wa:hover{background:#1ebe5a;}
.sfr-idle{text-align:center;padding:40px 20px;color:rgba(255,255,255,0.45);}
.sfr-idle-icon{font-size:48px;margin-bottom:14px;}
.sfr-idle-text{font-size:14px;line-height:1.65;}
.sfr-results{display:none;}
.sfr-result-hero{text-align:center;padding-bottom:18px;border-bottom:1px solid rgba(255,255,255,0.12);margin-bottom:16px;}
.sfr-result-label{font-size:11px;font-weight:700;color:rgba(255,255,255,0.5);text-transform:uppercase;letter-spacing:1px;margin-bottom:7px;font-family:'Montserrat',sans-serif;}
.sfr-result-big{font-family:'Montserrat',sans-serif;font-size:clamp(22px,3.5vw,36px);font-weight:800;color:#FCA5A5;line-height:1;}
.sfr-result-unit{font-size:18px;color:rgba(255,255,255,0.55);font-weight:400;}
.sfr-result-sub{font-size:12.5px;color:rgba(255,255,255,0.45);margin-top:7px;}
.sfr-recipe-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:16px;}
.sfr-recipe-item{background:rgba(255,255,255,0.06);border-radius:9px;padding:11px 13px;border:1px solid rgba(255,255,255,0.08);}
.sfr-recipe-label{font-size:11px;color:rgba(255,255,255,0.4);margin-bottom:4px;font-family:'Montserrat',sans-serif;}
.sfr-recipe-val{font-family:'Montserrat',sans-serif;font-size:15px;font-weight:800;color:#fff;line-height:1;}
.sfr-compliance{display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:8px;margin-bottom:16px;font-size:12.5px;font-weight:600;font-family:'Montserrat',sans-serif;line-height:1.4;}
.sfr-compliance.safe{background:rgba(0,135,90,0.2);border:1px solid rgba(0,135,90,0.35);color:#4ade80;}
.sfr-compliance.warning{background:rgba(217,119,6,0.2);border:1px solid rgba(217,119,6,0.35);color:#FCD34D;}
.sfr-compliance.over{background:rgba(191,10,48,0.25);border:1px solid rgba(191,10,48,0.4);color:#FCA5A5;}
.sfr-chart-wrap{margin-top:14px;}
.sfr-chart-label{font-size:11px;color:rgba(255,255,255,0.35);margin-bottom:6px;font-family:'Montserrat',sans-serif;text-transform:uppercase;letter-spacing:.5px;}
.sfr-chart-canvas-wrap{position:relative;height:180px;}
.sec{padding:60px 0;background:#fff;}
.sec.alt{background:var(--sfr-bg);}
.sec h2{font-family:'Montserrat',sans-serif;font-size:clamp(20px,2.2vw,26px);font-weight:800;color:var(--sfr-accent);margin-bottom:16px;}
.sec h3{font-family:'Montserrat',sans-serif;font-size:17px;font-weight:700;color:var(--sfr-text);margin:26px 0 10px;}
.sec p{font-size:15.5px;color:var(--sfr-muted);line-height:1.78;margin-bottom:16px;}
.sfr-usda-wrap{overflow-x:auto;border-radius:10px;box-shadow:0 2px 12px rgba(0,0,0,.06);margin:20px 0;}
.sfr-usda-table{width:100%;border-collapse:collapse;font-size:13px;min-width:500px;}
.sfr-usda-table th{background:var(--sfr-accent);color:#fff;padding:11px 14px;text-align:left;font-family:'Montserrat',sans-serif;font-size:11.5px;font-weight:700;}
.sfr-usda-table td{padding:10px 14px;border-bottom:1px solid var(--sfr-border);color:var(--sfr-text);}
.sfr-usda-table tr:nth-child(even) td{background:var(--sfr-bg);}
.sfr-badge-ok{display:inline-block;background:rgba(0,135,90,.1);color:var(--sfr-green);font-size:11px;font-weight:700;padding:2px 8px;border-radius:12px;}
.sfr-badge-hi{display:inline-block;background:rgba(217,119,6,.1);color:var(--sfr-orange);font-size:11px;font-weight:700;padding:2px 8px;border-radius:12px;}
.sfr-usda-note{font-size:12.5px;color:var(--sfr-muted);margin-top:10px;line-height:1.6;}
.sfr-usda-note a{color:var(--sfr-accent);text-decoration:underline;}
.sfr-examples{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px;}
.sfr-example{background:var(--sfr-white);border:1px solid var(--sfr-border);border-top:4px solid var(--sfr-accent);border-radius:10px;padding:22px;}
.sfr-ex-city{font-size:11px;font-weight:700;color:var(--sfr-accent);text-transform:uppercase;letter-spacing:.6px;margin-bottom:8px;}
.sfr-example h3{font-family:'Montserrat',sans-serif;font-size:14px;font-weight:700;color:var(--sfr-text);margin-bottom:10px;line-height:1.4;}
.sfr-example p{font-size:13.5px;color:var(--sfr-muted);line-height:1.62;margin:0;}
.sfr-ex-result{margin-top:14px;padding:10px 12px;background:var(--sfr-light);border-radius:8px;font-size:12.5px;font-weight:700;color:var(--sfr-accent);}
.sfr-tips-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:22px;}
.sfr-tip{background:var(--sfr-white);border:1px solid var(--sfr-border);border-radius:12px;padding:20px;display:flex;gap:14px;}
.sfr-tip-num{width:32px;height:32px;background:var(--sfr-accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:'Montserrat',sans-serif;font-size:14px;font-weight:800;flex-shrink:0;}
.sfr-tip h3{font-family:'Montserrat',sans-serif;font-size:14.5px;font-weight:700;color:var(--sfr-text);margin-bottom:6px;}
.sfr-tip p{font-size:13.5px;color:var(--sfr-muted);line-height:1.62;margin:0;}
.sfr-qr-wrap{overflow-x:auto;margin:18px 0;}
.sfr-qr-table{width:100%;border-collapse:collapse;font-size:13px;min-width:500px;}
.sfr-qr-table th{background:var(--sfr-text);color:#fff;padding:10px 14px;text-align:left;font-family:'Montserrat',sans-serif;font-size:11.5px;font-weight:700;}
.sfr-qr-table td{padding:9px 14px;border-bottom:1px solid var(--sfr-border);color:var(--sfr-text);}
.sfr-qr-table tr:nth-child(even) td{background:var(--sfr-bg);}
.sfr-faqs{display:flex;flex-direction:column;gap:9px;margin-top:24px;}
.sfr-faq-item{border:1.5px solid var(--sfr-border);border-radius:10px;overflow:hidden;background:var(--sfr-white);}
.sfr-faq-q{width:100%;background:var(--sfr-white);border:none;padding:16px 20px;text-align:left;font-family:'Montserrat',sans-serif;font-size:14.5px;font-weight:700;color:var(--sfr-text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;line-height:1.4;}
.sfr-faq-q::after{content:'+';font-size:22px;font-weight:300;color:var(--sfr-accent);flex-shrink:0;transition:transform .3s;line-height:1;}
.sfr-faq-item.open .sfr-faq-q{color:var(--sfr-accent);}
.sfr-faq-item.open .sfr-faq-q::after{transform:rotate(45deg);}
.sfr-faq-a{max-height:0;overflow:hidden;transition:max-height .36s ease;}
.sfr-faq-item.open .sfr-faq-a{max-height:600px;}
.sfr-faq-a-inner{padding:4px 20px 18px;}
.sfr-faq-a-inner p{font-size:14px;color:var(--sfr-muted);line-height:1.72;margin:0;}
.sfr-faq-a-inner a{color:var(--sfr-accent);text-decoration:underline;}
.sfr-cards-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:24px;}
.sfr-rel-card{background:var(--sfr-white);border:1.5px solid var(--sfr-border);border-radius:12px;padding:20px 16px;text-decoration:none;transition:all .22s;display:block;}
.sfr-rel-card:hover{border-color:var(--sfr-accent);box-shadow:0 4px 18px rgba(124,45,18,.1);transform:translateY(-2px);}
.sfr-rel-icon{font-size:28px;margin-bottom:10px;}
.sfr-rel-card h3{font-family:'Montserrat',sans-serif;font-size:13.5px;font-weight:700;color:var(--sfr-text);margin-bottom:6px;line-height:1.3;}
.sfr-rel-card p{font-size:12px;color:var(--sfr-muted);margin:0;line-height:1.5;}
.sfr-legal{background:var(--sfr-bg);border-top:1px solid var(--sfr-border);padding:32px 24px;}
.sfr-legal-inner{max-width:1100px;margin:0 auto;}
.sfr-legal h3{font-family:'Montserrat',sans-serif;font-size:14px;font-weight:700;color:var(--sfr-text);margin-bottom:10px;}
.sfr-legal p{font-size:13px;color:var(--sfr-muted);line-height:1.72;margin-bottom:8px;}
.sfr-legal a{color:var(--sfr-accent);text-decoration:underline;}
@media(max-width:900px){.sfr-calc-grid{grid-template-columns:1fr;}.sfr-examples{grid-template-columns:1fr;}.sfr-cards-grid{grid-template-columns:repeat(2,1fr);}.sfr-tips-grid{grid-template-columns:1fr;}}
@media(max-width:600px){.sfr-hero{padding:44px 20px 40px;}.sfr-calc-section,.sec{padding:40px 0;}.sfr-weight-row{flex-direction:column;}.sfr-fields-2col{grid-template-columns:1fr;}.sfr-cards-grid{grid-template-columns:repeat(2,1fr);}.sfr-recipe-grid{grid-template-columns:repeat(2,1fr);}.sfr-chart-canvas-wrap{height:150px;}}