:root{--red:#E60012;--white:#FFFFFF;--ink:#1A1A1A;--text-2:#555;--muted:#888;--line:#E8E8E8;--line-2:#F0F0F0;--bg-warm:#FAFAF7;--radius:6px;--radius-lg:12px;--font-display:'DM Serif Display',serif;--font-body:'Roboto',sans-serif;--shadow-sm:0 1px 3px rgba(0,0,0,.08);--green:#2E7D32;--green-bg:#E8F5E9;--amber:#E65100;--amber-bg:#FFF3E0;--red-bg:#FFEBEE;--red-dark:#C62828;}.lv-hero{background:var(--white);padding:56px 24px 48px;text-align:center;border-bottom:1px solid var(--line-2);}.lv-hero-inner{max-width:760px;margin:0 auto;}.lv-hero h1{font-family:var(--font-display);font-size:clamp(28px,4.5vw,44px);line-height:1.15;color:var(--ink);margin-bottom:14px;letter-spacing:-.01em;font-weight:400;}.lv-hero-sub{font-size:16px;color:var(--text-2);line-height:1.75;max-width:600px;margin:0 auto;}.lv-hero-sub a{color:var(--red);font-weight:600;text-decoration:underline;}.lv-hero-img{max-width:900px;margin:36px auto 0;border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 4px 24px rgba(0,0,0,.1);}.lv-hero-img img{width:100%;height:auto;display:block;}.lv-stitle{text-align:center;margin-bottom:40px;}.lv-stitle .lbl{font-size:12px;font-weight:500;color:var(--red);letter-spacing:.06em;text-transform:uppercase;margin-bottom:10px;}.lv-stitle h2{font-family:var(--font-display);font-size:clamp(24px,3.5vw,34px);color:var(--ink);font-weight:400;margin-bottom:10px;letter-spacing:-.01em;}.lv-stitle p{font-size:15px;color:var(--text-2);line-height:1.7;max-width:560px;margin:0 auto;}.lv-calc-section{background:var(--bg-warm);padding:72px 0;}.lv-container{max-width:1080px;margin:0 auto;padding:0 24px;}.lv-calc-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:36px;}.lv-input-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;margin-bottom:28px;}.lv-field{display:flex;flex-direction:column;}.lv-field label{font-size:13px;font-weight:500;color:var(--text-2);margin-bottom:10px;}.lv-input-wrap{position:relative;}.lv-input{width:100%;border:1.5px solid var(--line);border-radius:var(--radius);padding:11px 48px 11px 14px;font-size:15px;color:var(--ink);background:var(--white);transition:border-color .2s,box-shadow .2s;box-sizing:border-box;font-family:var(--font-body);}.lv-input:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(230,0,18,.1);outline:none;}.lv-input-wrap .unit{position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--muted);pointer-events:none;}.lv-volt-toggle{display:inline-flex;border:1.5px solid var(--line);border-radius:var(--radius);overflow:hidden;}.lv-volt-toggle button{padding:11px 24px;border:none;background:var(--white);font-size:14px;font-weight:500;color:var(--text-2);cursor:pointer;font-family:var(--font-body);transition:background .2s,color .2s;}.lv-volt-toggle button.active{background:var(--ink);color:var(--white);}.lv-slider-wrap label{font-size:13px;font-weight:500;color:var(--text-2);margin-bottom:10px;display:flex;justify-content:space-between;align-items:center;}.lv-slider-wrap label .val{font-size:20px;font-weight:700;color:var(--red);font-family:var(--font-display);}.lv-slider{width:100%;height:6px;border-radius:3px;background:linear-gradient(to right,#E60012 0%,#E60012 30%,var(--line) 30%,var(--line) 100%);outline:none;-webkit-appearance:none;appearance:none;cursor:pointer;}.lv-slider::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--red);cursor:pointer;border:3px solid var(--white);box-shadow:0 1px 4px rgba(0,0,0,.2);}.lv-slider::-moz-range-thumb{width:22px;height:22px;border-radius:50%;background:var(--red);cursor:pointer;border:3px solid var(--white);box-shadow:0 1px 4px rgba(0,0,0,.2);}.lv-diagram-wrap{background:var(--bg-warm);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;margin-bottom:28px;}.lv-diagram-wrap h4{font-size:13px;font-weight:700;color:var(--ink);margin-bottom:16px;text-align:center;text-transform:uppercase;letter-spacing:.04em;}.lv-svg-diagram{width:100%;max-width:700px;height:auto;display:block;margin:0 auto;}.lv-results{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}.lv-result-card{border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px;position:relative;}.lv-result-card.primary{background:var(--ink);color:var(--white);border-color:var(--ink);grid-column:span 2;}.lv-result-card.primary .lv-rc-label{color:rgba(255,255,255,.55);}.lv-result-card.primary .lv-rc-val{color:var(--white);}.lv-result-card.primary .lv-rc-note{color:rgba(255,255,255,.45);}.lv-result-card.good{border-color:#C8E6C9;background:var(--green-bg);}.lv-result-card.warn{border-color:#FFE0B2;background:var(--amber-bg);}.lv-result-card.bad{border-color:#FFCDD2;background:var(--red-bg);}.lv-rc-label{font-size:11px;font-weight:500;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px;}.lv-rc-val{font-size:32px;font-weight:700;font-family:var(--font-display);color:var(--ink);line-height:1;}.lv-rc-val .small{font-size:14px;font-weight:400;color:var(--text-2);}.lv-result-card.primary .lv-rc-val .small{color:rgba(255,255,255,.4);}.lv-rc-note{font-size:12px;color:var(--text-2);margin-top:8px;line-height:1.5;}.lv-rc-status{font-size:13px;font-weight:600;margin-top:6px;}.lv-result-card.good .lv-rc-status{color:var(--green);}.lv-result-card.warn .lv-rc-status{color:var(--amber);}.lv-result-card.bad .lv-rc-status{color:var(--red-dark);}.lv-formula-section{background:var(--white);padding:72px 0;}.lv-formula-box{background:var(--bg-warm);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;max-width:700px;margin:40px auto 0;}.lv-formula-box .formula{font-family:'Courier New',monospace;font-size:18px;font-weight:700;color:var(--ink);background:var(--white);padding:16px 24px;border-radius:var(--radius);border-left:4px solid var(--red);margin:16px 0;}.lv-formula-box p{font-size:15px;color:var(--text-2);line-height:1.8;margin-bottom:14px;}.lv-formula-box ul{list-style:none;padding:0;}.lv-formula-box ul li{font-size:14px;color:var(--text-2);padding:8px 0;border-bottom:1px solid var(--line-2);}.lv-formula-box ul li:last-child{border-bottom:none;}.lv-formula-box ul li strong{color:var(--ink);font-weight:600;}.lv-compare-section{background:var(--bg-warm);padding:72px 0;}.lv-compare-table{max-width:800px;margin:40px auto 0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;}.lv-compare-table table{width:100%;border-collapse:collapse;}.lv-compare-table th{background:var(--ink);color:var(--white);font-size:14px;font-weight:600;padding:16px 20px;text-align:left;font-family:var(--font-body);}.lv-compare-table th:first-child{width:25%;}.lv-compare-table td{padding:14px 20px;font-size:14px;color:var(--text-2);border-top:1px solid var(--line-2);line-height:1.6;}.lv-compare-table td:first-child{font-weight:600;color:var(--ink);background:var(--bg-warm);}.lv-compare-table tr:nth-child(even) td{background:var(--white);}.lv-compare-table tr:nth-child(even) td:first-child{background:var(--bg-warm);}.lv-mistakes-section{background:var(--white);padding:72px 0;}.lv-mistake-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;}.lv-mistake-col{border-radius:var(--radius-lg);overflow:hidden;border:2px solid;}.lv-mistake-col.bad{border-color:#FFCDD2;}.lv-mistake-col.warn{border-color:#FFE0B2;}.lv-mistake-col.good{border-color:#C8E6C9;}.lv-mistake-head{padding:20px 24px 12px;text-align:center;}.lv-mistake-col.bad .lv-mistake-head{background:var(--red-bg);}.lv-mistake-col.warn .lv-mistake-head{background:var(--amber-bg);}.lv-mistake-col.good .lv-mistake-head{background:var(--green-bg);}.lv-mistake-head h3{font-family:var(--font-display);font-size:20px;font-weight:400;margin-bottom:4px;}.lv-mistake-col.bad .lv-mistake-head h3{color:var(--red-dark);}.lv-mistake-col.warn .lv-mistake-head h3{color:var(--amber);}.lv-mistake-col.good .lv-mistake-head h3{color:var(--green);}.lv-mistake-head .lv-mistake-stat{font-size:28px;font-weight:700;font-family:var(--font-display);margin-top:4px;}.lv-mistake-col.bad .lv-mistake-head .lv-mistake-stat{color:var(--red-dark);}.lv-mistake-col.warn .lv-mistake-head .lv-mistake-stat{color:var(--amber);}.lv-mistake-col.good .lv-mistake-head .lv-mistake-stat{color:var(--green);}.lv-mistake-body{padding:20px 24px 28px;}.lv-mistake-body p{font-size:14px;color:var(--text-2);line-height:1.75;}.lv-mistake-body .fix{font-size:13px;color:var(--ink);font-weight:600;margin-top:12px;padding-top:12px;border-top:1px solid var(--line-2);}.lv-wire-section{background:var(--bg-warm);padding:72px 0;}.lv-wire-table{max-width:800px;margin:40px auto 0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;}.lv-wire-table table{width:100%;border-collapse:collapse;}.lv-wire-table th{background:var(--ink);color:var(--white);font-size:13px;font-weight:600;padding:14px 16px;text-align:left;}.lv-wire-table td{padding:12px 16px;font-size:14px;color:var(--text-2);border-top:1px solid var(--line-2);}.lv-wire-table td:first-child{font-weight:700;color:var(--ink);font-family:'Courier New',monospace;}.lv-wire-table tr:nth-child(even) td{background:var(--white);}.lv-faq-section{background:var(--white);padding:72px 0;}.lv-faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 32px;max-width:900px;margin:40px auto 0;}.lv-faq-item{border-left:3px solid var(--line);padding:16px 20px;cursor:pointer;transition:border-color .2s,background .2s;border-radius:0 var(--radius) var(--radius) 0;}.lv-faq-item:hover{background:var(--bg-warm);}.lv-faq-item.open{border-left-color:var(--red);background:var(--bg-warm);box-shadow:var(--shadow-sm);}.lv-faq-item h3{font-size:15px;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px;transition:color .2s;}.lv-faq-item.open h3{color:var(--red);}.lv-faq-item .lv-faq-icon{width:20px;height:20px;flex-shrink:0;transition:transform .3s;}.lv-faq-item.open .lv-faq-icon{transform:rotate(45deg);}.lv-faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}.lv-faq-item.open .lv-faq-a{max-height:500px;}.lv-faq-a p{font-size:14px;color:var(--text-2);line-height:1.75;padding-top:12px;}.lv-cta-section{background:var(--bg-warm);padding:72px 0;}.lv-cta-split{display:grid;grid-template-columns:1.5fr 1fr;gap:48px;align-items:center;background:var(--ink);border-radius:16px;padding:48px;}.lv-cta-text h3{font-family:var(--font-display);font-size:26px;color:var(--white);margin-bottom:12px;font-weight:400;}.lv-cta-text p{font-size:14px;color:rgba(255,255,255,.55);line-height:1.7;}.lv-cta-btns{display:flex;flex-direction:column;gap:12px;}.lv-cta-btns a{text-align:center;}@media (max-width:768px){.lv-input-grid{grid-template-columns:1fr;gap:16px;}.lv-results{grid-template-columns:1fr;}.lv-result-card.primary{grid-column:span 1;}.lv-mistake-grid{grid-template-columns:1fr;}.lv-faq-grid{grid-template-columns:1fr;}.lv-cta-split{grid-template-columns:1fr;padding:32px 24px;gap:24px;}.lv-cta-btns{flex-direction:row;}.lv-calc-panel{padding:24px 20px;}.lv-compare-table{font-size:13px;}.lv-compare-table th,.lv-compare-table td{padding:12px 14px;}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.v3-btn-outline-white{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border:1.5px solid rgba(255,255,255,.4);border-radius:6px;background:transparent;color:#fff;font-family:'Roboto',sans-serif;font-size:14px;font-weight:500;text-decoration:none;cursor:pointer;transition:background .2s,border-color .2s;}.v3-btn-outline-white:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.7);}.skip-link{position:absolute;left:-9999px;top:0;z-index:9999;background:#E60012;color:#fff;padding:10px 20px;font-size:14px;font-weight:600;border-radius:0 0 6px 0;}.skip-link:focus{left:0;}