:root{--ink:#0b1730;--navy:#0c1f3d;--navy2:#102b52;--muted:#60708a;--line:#dfe6ef;--paper:#f6f8fb;--white:#fff;--orange:#ff8a1f;--orange2:#ffb03a;--green:#20a66a;--shadow:0 18px 50px rgba(11,23,48,.12);--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.6}a{color:inherit;text-decoration:none}.wrap{width:min(1180px,calc(100% - 32px));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(223,230,239,.8)}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:11px;font-weight:900;letter-spacing:-.03em}.brandmark{width:39px;height:39px;border-radius:12px;background:linear-gradient(145deg,var(--orange2),var(--orange));display:grid;place-items:center;color:#111;box-shadow:0 8px 22px rgba(255,138,31,.3)}.brand small{display:block;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:800}.navlinks{display:flex;align-items:center;gap:24px;font-size:14px;font-weight:750}.navlinks a:not(.btn):hover{color:var(--orange)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--orange2),var(--orange));color:#111;font-weight:900;border:0;border-radius:12px;padding:13px 18px;cursor:pointer;box-shadow:0 10px 24px rgba(255,138,31,.22);transition:.2s}.btn:hover{transform:translateY(-1px);box-shadow:0 13px 28px rgba(255,138,31,.3)}.btn-dark{background:var(--navy);color:#fff;box-shadow:none}.btn-outline{background:#fff;color:var(--navy);border:1px solid var(--line);box-shadow:none}.hero{background:radial-gradient(circle at 78% 25%,rgba(255,176,58,.16),transparent 27%),linear-gradient(135deg,#f8fbff,#fff 55%,#fff8ef);padding:66px 0 72px;border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:850;font-size:13px;color:#8c4d0c;background:#fff3e2;border:1px solid #ffd9ad;border-radius:999px;padding:7px 11px;margin-bottom:15px}.dot{width:8px;height:8px;border-radius:50%;background:var(--orange)}h1,h2,h3{line-height:1.08;letter-spacing:-.045em;margin:0}h1{font-size:clamp(42px,5vw,72px);max-width:820px}h2{font-size:clamp(30px,3.5vw,48px)}h3{font-size:22px}.hero p{font-size:19px;color:var(--muted);max-width:650px;margin:22px 0 28px}.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.trust-pill{display:flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 11px;font-weight:750;font-size:13px;color:#40506a}.calc-card{background:#fff;border:1px solid #dce5ef;border-radius:28px;box-shadow:var(--shadow);overflow:hidden}.calc-head{padding:23px 24px;background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff}.calc-head p{margin:6px 0 0;color:#d9e2ef;font-size:14px}.calc-body{padding:24px}.field{margin-bottom:18px}.field label{display:flex;justify-content:space-between;font-weight:850;font-size:14px;margin-bottom:7px}.field label span{color:var(--orange);font-weight:900}input[type=range]{width:100%;accent-color:var(--orange)}.mode-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}.choice{border:1px solid var(--line);background:#fff;border-radius:13px;padding:12px;text-align:center;font-weight:800;cursor:pointer}.choice.active{border-color:#f59a3d;background:#fff7eb;box-shadow:inset 0 0 0 1px #f59a3d}.appliance-picker{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;max-height:240px;overflow:auto;padding-right:4px}.appliance{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:12px;padding:10px 11px;font-size:13px;font-weight:700;cursor:pointer;background:#fff}.appliance input{accent-color:var(--orange);width:16px;height:16px}.result{margin-top:18px;border-radius:18px;background:linear-gradient(135deg,#0c1f3d,#122e58);color:#fff;padding:20px;position:relative;overflow:hidden}.result:after{content:"";position:absolute;width:140px;height:140px;border-radius:50%;right:-45px;top:-55px;border:26px solid rgba(255,176,58,.13)}.result-label{text-transform:uppercase;font-size:11px;letter-spacing:.14em;font-weight:850;color:#b9c5d7}.result-size{font-size:50px;line-height:1;font-weight:950;letter-spacing:-.055em;margin:7px 0}.result-meta{display:grid;grid-template-columns:1fr 1fr;gap:10px;color:#dfe7f2;font-size:13px}.microcopy{font-size:11px;color:#77859a;margin-top:12px}.section{padding:78px 0}.section.alt{background:var(--paper)}.section-title{max-width:760px;margin-bottom:34px}.section-title p{font-size:18px;color:var(--muted);margin:14px 0 0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 8px 26px rgba(11,23,48,.05)}.icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:#fff2e2;margin-bottom:16px;font-size:22px}.card p{color:var(--muted);margin:10px 0 0}.step{position:relative;padding-left:54px}.step-num{position:absolute;left:0;top:0;width:38px;height:38px;border-radius:12px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:900}.guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.guide-link{display:flex;justify-content:space-between;align-items:center;background:#fff;border:1px solid var(--line);padding:17px 18px;border-radius:14px;font-weight:850}.guide-link span{color:var(--orange);font-size:20px}.quote-band{background:linear-gradient(135deg,#0b1730,#173660);color:#fff;border-radius:28px;padding:36px;display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center;box-shadow:var(--shadow)}.quote-band p{color:#d2dceb;margin:10px 0 0}.quote-form{display:grid;grid-template-columns:1fr 1fr;gap:10px}.quote-form input,.quote-form select{width:100%;border:0;border-radius:11px;padding:13px 14px;font:inherit}.quote-form .full{grid-column:1/-1}.quote-form button{grid-column:1/-1}.fine{font-size:11px;color:#aebbd0;grid-column:1/-1}.faq{max-width:850px}.faq details{background:#fff;border:1px solid var(--line);border-radius:15px;margin-bottom:10px;padding:16px 18px}.faq summary{font-weight:850;cursor:pointer}.faq details p{color:var(--muted);margin:10px 0 0}.source-note{border-left:4px solid var(--orange);background:#fff8ef;padding:16px 18px;border-radius:0 12px 12px 0;color:#4d5b70}.footer{background:#081428;color:#ccd6e5;padding:42px 0 26px}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:34px}.footer h4{color:#fff;margin:0 0 11px}.footer a{display:block;margin:7px 0;color:#b8c4d5}.footer-bottom{border-top:1px solid #243550;margin-top:28px;padding-top:20px;font-size:12px;color:#8fa0b9}.article-hero{padding:58px 0;background:linear-gradient(135deg,#f7faff,#fff8ef);border-bottom:1px solid var(--line)}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:16px}.article-wrap{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:38px;align-items:start;padding:54px 0}.article-content h2{font-size:34px;margin:38px 0 14px}.article-content h3{margin:28px 0 10px}.article-content p,.article-content li{color:#485870}.article-content table{width:100%;border-collapse:collapse;margin:24px 0}.article-content th,.article-content td{padding:12px;border:1px solid var(--line);text-align:left}.article-content th{background:var(--paper)}.side-card{position:sticky;top:98px;background:var(--navy);color:#fff;border-radius:20px;padding:22px}.side-card p{color:#d1dbea}.kw-badge{display:inline-block;background:#edf3f9;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800;margin:3px}.notice{background:#fff8ef;border:1px solid #ffd5a3;border-radius:15px;padding:16px;color:#65421c}.hide-mobile{display:inline-flex}@media(max-width:900px){.navlinks a:not(.btn){display:none}.hero-grid,.quote-band,.article-wrap{grid-template-columns:1fr}.hero{padding-top:44px}.cards{grid-template-columns:1fr}.quote-form{grid-template-columns:1fr}.quote-form .full,.quote-form button{grid-column:1}.side-card{position:static}.footer-grid{grid-template-columns:1fr 1fr}.article-wrap{padding-top:35px}.hide-mobile{display:none}}@media(max-width:620px){.wrap{width:min(100% - 22px,1180px)}.nav{height:68px}.brand{font-size:15px}.brandmark{width:34px;height:34px}.hero{padding:36px 0 48px}.hero p{font-size:17px}.calc-body{padding:17px}.appliance-picker{grid-template-columns:1fr}.result-meta,.guide-grid,.footer-grid{grid-template-columns:1fr}.section{padding:58px 0}.quote-band{padding:24px}.result-size{font-size:44px}}


/* v2 authority-site additions */
.article-meta{margin-top:18px;font-size:12px;font-weight:750;color:#8491a4;text-transform:uppercase;letter-spacing:.08em}.guide-link span{display:flex;flex-direction:column;gap:2px}.guide-link small{color:#8090a7;font-size:10px;text-transform:uppercase;letter-spacing:.11em}.guide-link b{color:var(--orange);font-size:20px}.result-link{display:inline-flex;margin-top:14px;color:#fff;font-weight:850;text-decoration:underline;text-underline-offset:3px}.tool-split{display:grid;grid-template-columns:1fr 1fr;gap:18px}.big-tool{display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:0 8px 26px rgba(11,23,48,.05)}.big-tool-icon{width:54px;height:54px;flex:0 0 54px;border-radius:16px;display:grid;place-items:center;background:#fff2e2;color:#dd7400;font-size:26px;font-weight:950}.big-tool small,.guide-cat{font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#8897aa;font-weight:900}.big-tool h3{margin:5px 0 8px}.big-tool p{color:var(--muted);margin:0 0 12px}.big-tool b{color:var(--orange)}.guide-tools{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-bottom:44px}.tool-card{display:flex;gap:14px;align-items:center;border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff}.tool-card>span{font-size:24px}.tool-card div{display:flex;flex-direction:column}.tool-card small{color:var(--muted);margin-top:3px}.guide-category{margin:48px 0}.guide-category>h2{font-size:32px;margin-bottom:18px}.guide-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.guide-card{border:1px solid var(--line);border-radius:16px;padding:18px;background:#fff;min-height:172px;display:flex;flex-direction:column}.guide-card h3{font-size:19px;letter-spacing:-.025em;margin:8px 0}.guide-card p{color:var(--muted);font-size:13px;margin:0}.guide-arrow{margin-top:auto;padding-top:14px;color:var(--orange);font-weight:850;font-size:13px}.data-callout{background:linear-gradient(135deg,#0d203e,#18375e);color:#fff;border-radius:20px;padding:22px;margin:20px 0;display:flex;flex-direction:column}.data-callout span{font-size:11px;text-transform:uppercase;letter-spacing:.13em;color:#b9c6d9;font-weight:850}.data-callout strong{font-size:28px;margin:7px 0}.data-callout small{color:#c9d4e3}.cost-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:28px;align-items:start}.cost-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden}.cost-body{padding:24px}.cost-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}.cost-fields .field{margin:0}.cost-fields label{display:block}.cost-fields select{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 13px;background:#fff;font:inherit;color:#27364d}.cost-result{margin-top:22px;background:linear-gradient(135deg,#0b1730,#173660);color:#fff;border-radius:20px;padding:24px}.cost-result>span{text-transform:uppercase;letter-spacing:.13em;font-size:11px;font-weight:850;color:#b8c6d9}.cost-result>strong{display:block;font-size:clamp(34px,5vw,52px);letter-spacing:-.05em;margin:7px 0}.cost-result>p{color:#d7e0ec}.cost-breakdown{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:18px 0}.cost-breakdown div{background:rgba(255,255,255,.08);border-radius:12px;padding:12px;display:flex;flex-direction:column}.cost-breakdown span{font-size:11px;color:#c2cede}.cost-breakdown strong{font-size:18px;margin-top:3px}.cost-result .btn{margin-top:4px}.cost-result .microcopy{color:#b9c6d9}.cost-hero{background:radial-gradient(circle at 85% 10%,rgba(255,175,60,.14),transparent 32%),linear-gradient(135deg,#f7faff,#fff8ef)}
@media(max-width:900px){.tool-split,.guide-tools,.cost-layout{grid-template-columns:1fr}.guide-card-grid{grid-template-columns:1fr 1fr}.cost-fields{grid-template-columns:1fr}}
@media(max-width:620px){.guide-card-grid,.cost-breakdown{grid-template-columns:1fr}.big-tool{padding:20px}.guide-category{margin:36px 0}}