:root{--hc-bg:#f7f9fc;--hc-ink:#14213d;--hc-muted:#5c667d;--hc-line:#dbe3ef;--hc-soft:#eef4fb;--hc-good:#166534;--hc-warn:#92400e}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
.hc-skip{position:absolute;left:-9999px;top:8px;z-index:9999;background:#fff;color:#111;padding:10px 14px;border-radius:8px}
.hc-skip:focus{left:8px}
.hc-breadcrumbs{font-size:14px;margin:0 0 20px;color:rgba(255,255,255,.84)}
.hc-breadcrumbs a{color:#fff;text-decoration:underline;text-underline-offset:3px}
.hc-hero{position:relative;overflow:hidden;padding:64px 0;background:linear-gradient(135deg,var(--color-primary,#2c3e50),var(--color-accent,#3498db));color:#fff}
.hc-hero:after{content:"";position:absolute;inset:auto -8% -60% 45%;height:380px;background:radial-gradient(circle,rgba(255,255,255,.2),transparent 66%);pointer-events:none}
.hc-hero .container{position:relative;z-index:1}
.hc-eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border:1px solid rgba(255,255,255,.3);border-radius:999px;background:rgba(255,255,255,.1);font-size:13px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}
.hc-hero h1{max-width:880px;margin:14px 0 12px;font-size:clamp(34px,5vw,58px);line-height:1.05;color:#fff}
.hc-hero p{max-width:780px;margin:0;font-size:clamp(17px,2vw,20px);line-height:1.7;color:rgba(255,255,255,.91)}
.hc-section{padding:58px 0;background:#fff;color:var(--hc-ink)}
.hc-section.hc-soft{background:var(--hc-bg)}
.hc-section.hc-tight{padding:38px 0}
.hc-section-head{max-width:800px;margin:0 auto 28px;text-align:center}
.hc-section-head h2{margin:0 0 10px;color:var(--hc-ink);font-size:clamp(27px,3vw,38px)}
.hc-section-head p{margin:0;color:var(--hc-muted);font-size:17px;line-height:1.7}
.hc-hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.hc-hub-card,.hc-copy-card,.hc-local-card,.hc-service-card{border:1px solid var(--hc-line);border-radius:18px;background:#fff;box-shadow:0 12px 32px rgba(20,33,61,.07)}
.hc-hub-card{display:flex;min-height:260px;flex-direction:column;padding:24px}
.hc-icon{display:grid;width:46px;height:46px;place-items:center;border-radius:13px;background:linear-gradient(135deg,var(--color-primary,#2c3e50),var(--color-accent,#3498db));color:#fff;font-size:20px}
.hc-hub-card h2{margin:17px 0 9px;font-size:21px;color:var(--hc-ink)}
.hc-hub-card p{margin:0 0 20px;color:var(--hc-muted);line-height:1.65}
.hc-card-link{display:inline-flex;align-items:center;justify-content:center;margin-top:auto;padding:11px 15px;border-radius:11px;background:var(--color-primary,#2c3e50);color:#fff!important;font-weight:800;text-decoration:none}
.hc-copy-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.hc-copy-card,.hc-local-card{padding:28px}
.hc-copy-card h2,.hc-local-card h2,.hc-local-card h3{color:var(--hc-ink)}
.hc-copy-card p,.hc-local-card p,.hc-local-card li{color:var(--hc-muted);line-height:1.75}
.hc-local-card p:last-child{margin-bottom:0}
.hc-fact-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:22px 0}
.hc-fact{padding:16px;border:1px solid var(--hc-line);border-radius:14px;background:var(--hc-soft)}
.hc-fact strong{display:block;margin-bottom:4px;color:var(--hc-ink)}
.hc-fact span{color:var(--hc-muted);font-size:14px;line-height:1.5}
.hvac-calculator{max-width:980px;margin:auto}
.hc-calc-shell{overflow:hidden;border:1px solid var(--hc-line);border-radius:22px;background:#fff;box-shadow:0 20px 50px rgba(20,33,61,.1)}
.hc-calc-head{padding:24px 28px;background:linear-gradient(135deg,var(--color-primary,#2c3e50),var(--color-accent,#3498db));color:#fff}
.hc-calc-head h2{margin:0 0 7px;color:#fff;font-size:27px}
.hc-calc-head p{margin:0;color:rgba(255,255,255,.9);line-height:1.6}
.hc-form{padding:28px}
.hc-field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.hc-field{min-width:0}
.hc-field-full{grid-column:1/-1}
.hc-field label,.hc-field legend{display:block;margin-bottom:7px;color:var(--hc-ink);font-weight:800}
.hc-field input,.hc-field select{width:100%;min-height:48px;padding:10px 12px;border:1px solid #aebbd0;border-radius:10px;background:#fff;color:#17213a;font:inherit}
.hc-field input:focus,.hc-field select:focus{outline:3px solid color-mix(in srgb,var(--color-accent,#3498db) 30%,transparent);border-color:var(--color-accent,#3498db)}
.hc-hint{display:block;margin-top:6px;color:var(--hc-muted);font-size:13px;line-height:1.45}
.hc-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hc-btn{min-height:47px;padding:11px 19px;border:0;border-radius:11px;cursor:pointer;font:inherit;font-weight:800}
.hc-btn-primary{background:var(--color-primary,#2c3e50);color:#fff}
.hc-btn-secondary{border:1px solid var(--hc-line);background:#fff;color:var(--hc-ink)}
.hc-errors{display:none;margin:18px 0 0;padding:12px 14px;border-left:4px solid #b91c1c;background:#fef2f2;color:#7f1d1d;line-height:1.55}
.hc-errors.is-visible{display:block}
.hc-results{display:none;padding:28px;border-top:1px solid var(--hc-line);background:var(--hc-bg)}
.hc-results.is-visible{display:block}
.hc-results h3{margin:0 0 15px;color:var(--hc-ink);font-size:24px}
.hc-result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.hc-result{padding:16px;border:1px solid var(--hc-line);border-radius:14px;background:#fff}
.hc-result span{display:block;margin-bottom:5px;color:var(--hc-muted);font-size:13px}
.hc-result strong{display:block;color:var(--hc-ink);font-size:21px;line-height:1.2;overflow-wrap:anywhere}
.hc-result-note{margin:17px 0 0;color:var(--hc-muted);line-height:1.7}
.hc-chart{display:grid;gap:8px;margin-top:18px}
.hc-chart-row{display:grid;grid-template-columns:110px minmax(0,1fr) 90px;gap:10px;align-items:center;font-size:14px}
.hc-bar-track{height:14px;overflow:hidden;border-radius:999px;background:#dbe3ef}
.hc-bar{height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--color-primary,#2c3e50),var(--color-accent,#3498db))}
.hc-disclaimer{padding:18px 20px;border:1px solid #f4c27a;border-radius:14px;background:#fff7e8;color:#6d3d05;line-height:1.65}
.hc-related,.hc-services{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.hc-related a,.hc-services a{display:inline-flex;padding:10px 14px;border:1px solid var(--hc-line);border-radius:999px;background:#fff;color:var(--hc-ink);font-weight:700;text-decoration:none}
.hc-authority{padding:17px 19px;border-left:4px solid var(--color-accent,#3498db);background:var(--hc-soft);color:var(--hc-muted);line-height:1.7}
.hc-authority a{font-weight:800}
.hc-faq{max-width:900px;margin:auto}
.hc-faq details{margin:0 0 11px;border:1px solid var(--hc-line);border-radius:13px;background:#fff}
.hc-faq summary{cursor:pointer;padding:18px 20px;color:var(--hc-ink);font-weight:800}
.hc-faq details p{margin:0;padding:0 20px 20px;color:var(--hc-muted);line-height:1.7}
.hc-cta{padding:30px;border-radius:20px;background:linear-gradient(135deg,var(--color-primary,#2c3e50),var(--color-accent,#3498db));color:#fff;text-align:center}
.hc-cta h2{margin:0 0 9px;color:#fff}
.hc-cta p{max-width:720px;margin:0 auto 18px;color:rgba(255,255,255,.9);line-height:1.7}
.hc-phone{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:11px;background:#fff;color:var(--color-primary,#2c3e50)!important;font-weight:900;text-decoration:none}
@media(max-width:900px){.hc-hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hc-fact-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hc-result-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.hc-hero{padding:45px 0}.hc-section{padding:42px 0}.hc-hub-grid,.hc-copy-grid,.hc-field-grid,.hc-result-grid{grid-template-columns:1fr}.hc-field-full{grid-column:auto}.hc-hub-card{min-height:0}.hc-calc-head,.hc-form,.hc-results,.hc-copy-card,.hc-local-card{padding:21px}.hc-fact-grid{grid-template-columns:1fr 1fr}.hc-chart-row{grid-template-columns:85px minmax(0,1fr) 74px}.hc-actions .hc-btn{flex:1}.hc-hero h1{overflow-wrap:anywhere}}
@media(max-width:390px){.hc-fact-grid{grid-template-columns:1fr}.hc-chart-row{grid-template-columns:1fr}.hc-chart-row strong{text-align:left}}