/* Ely Heating Pros — lightweight, mobile-first */
:root{--navy:#0e2233;--navy2:#14324a;--amber:#f5a623;--amber-d:#d98a0b;--ink:#1c2b3a;--muted:#5b6b7c;--bg:#ffffff;--soft:#f4f7fa;--line:#e2e9f0}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);line-height:1.65;background:var(--bg);font-size:17px}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
.topbar{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:10px;padding-bottom:10px}
.brand{color:#fff;font-weight:800;font-size:19px;text-decoration:none;letter-spacing:.3px}
.call-btn{background:var(--amber);color:#20160a;font-weight:800;text-decoration:none;padding:9px 16px;border-radius:8px;font-size:15px;white-space:nowrap}
.call-btn:hover{background:var(--amber-d)}
.hero{background:linear-gradient(160deg,var(--navy) 0%,var(--navy2) 70%,#1b3d5c 100%);color:#fff;padding:52px 0 46px}
.hero h1{font-size:34px;line-height:1.2;margin-bottom:14px;letter-spacing:-.3px}
.hero .lede{color:#c9d6e2;font-size:18px;max-width:620px;margin-bottom:24px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.btn-primary{background:var(--amber);color:#20160a;font-weight:800;text-decoration:none;padding:14px 24px;border-radius:10px;font-size:17px;display:inline-block}
.btn-primary:hover{background:var(--amber-d)}
.btn-ghost{border:2px solid #7e93a8;color:#fff;text-decoration:none;padding:12px 22px;border-radius:10px;font-size:16px;font-weight:600;display:inline-block}
.btn-ghost:hover{border-color:#fff}
.trust-strip{background:var(--soft);border-bottom:1px solid var(--line);padding:12px 0;font-size:14.5px;color:var(--muted)}
.trust-strip .wrap{display:flex;gap:18px;flex-wrap:wrap}
main{padding:36px 0 20px}
main h2{font-size:25px;margin:34px 0 12px;color:var(--navy);line-height:1.3}
main h3{font-size:19px;margin:22px 0 8px;color:var(--navy)}
main p{margin-bottom:14px}
main ul,main ol{margin:0 0 16px 22px}
main li{margin-bottom:8px}
.answer{background:var(--soft);border-left:4px solid var(--amber);padding:16px 18px;border-radius:0 10px 10px 0;margin:18px 0;font-size:16.5px}
.answer strong{color:var(--navy)}
.svc-grid{display:grid;grid-template-columns:1fr;gap:12px;margin:18px 0}
.svc-card{border:1px solid var(--line);border-radius:12px;padding:16px 18px;background:#fff}
.svc-card a{color:var(--navy);font-weight:700;text-decoration:none;font-size:18px}
.svc-card a:hover{text-decoration:underline}
.svc-card p{color:var(--muted);font-size:15.5px;margin:6px 0 0}
.area-list{columns:2;column-gap:24px;margin:10px 0 18px 0;list-style:none;padding:0}
.area-list li{margin-bottom:6px;font-size:16px}
.area-list a{color:#1a5fa8;text-decoration:none}
.area-list a:hover{text-decoration:underline}
.faq{margin:26px 0}
.faq h2{margin-bottom:14px}
.faq-item{border:1px solid var(--line);border-radius:10px;margin-bottom:10px;background:#fff}
.faq-item summary{padding:14px 16px;font-weight:700;cursor:pointer;color:var(--navy);font-size:16.5px;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";float:right;color:var(--amber-d);font-size:20px}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-a{padding:0 16px 16px;color:var(--ink);font-size:16px}
.cta-band{background:var(--navy);color:#fff;border-radius:14px;padding:28px 24px;margin:34px 0;text-align:center}
.cta-band h2{color:#fff;margin:0 0 10px}
.cta-band p{color:#c9d6e2;margin-bottom:18px}
footer{background:#0a1826;color:#8fa3b8;padding:28px 0 96px;font-size:14px}
footer a{color:#b9c9da}
.sticky-call{position:fixed;left:0;right:0;bottom:0;background:#1d7a3a;color:#fff;text-align:center;padding:15px 10px;font-weight:800;font-size:17px;text-decoration:none;z-index:60;box-shadow:0 -2px 12px rgba(0,0,0,.25)}
.sticky-call:hover{background:#186230}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:6px}
.breadcrumb a{color:#1a5fa8;text-decoration:none}
@media(min-width:640px){.hero h1{font-size:42px}.svc-grid{grid-template-columns:1fr 1fr}}

/* --- retrofit: interactive components (progressive enhancement) --- */
.locale-anchor{font-size:.95rem;color:#5b6b7c;margin-bottom:14px}
.faq details{border:1px solid #e2e9f0;border-radius:10px;margin-bottom:10px;background:#fff;overflow:hidden}
.faq details>summary,.faq-acc>summary{cursor:pointer;font-weight:700;padding:14px 16px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
.faq details>summary::-webkit-details-marker{display:none}
.faq details>summary::after{content:"+";font-size:1.35rem;line-height:1;color:#f5a623;flex:none;font-weight:800}
.faq details[open]>summary::after{content:"\2013"}
.faq .faq-a,.faq details>p{padding:2px 16px 14px;margin:0}
.faq .faq-a p{margin:0;padding:0}
.facts{background:#f4f7fa;border:1px solid #e2e9f0;border-radius:12px;padding:18px;margin:24px 0}
.facts h2{font-size:1.12rem;margin-bottom:8px}
.facts dl{margin:0}
.facts dl>div{display:grid;grid-template-columns:132px 1fr;gap:4px 12px;padding:8px 0;border-top:1px solid #e2e9f0}
.facts dl>div:first-child{border-top:0}
.facts dt{font-weight:700;font-size:.9rem}
.facts dd{margin:0;font-size:.93rem}
@media(max-width:540px){.facts dl>div{grid-template-columns:1fr}}
.est-sec{margin:8px 0}
.est{background:#fff;border:2px solid #e2e9f0;border-radius:14px;padding:20px;margin:16px 0}
.est label{display:block;font-weight:700;margin-bottom:14px}
.est select,.est input[type=range]{width:100%;margin-top:8px;padding:12px;font-size:1rem;border:1px solid #e2e9f0;border-radius:8px;background:#fff;color:inherit;font-family:inherit}
.est-out{background:#f4f7fa;border-radius:10px;padding:16px;margin-top:4px;text-align:center}
.est-range{font-size:1.25rem;margin-bottom:8px}
.hiw-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin:16px 0}
.hiw-step{background:#fff;border:1px solid #e2e9f0;border-radius:12px;padding:16px}
.hiw-step .n{display:inline-block;background:#f5a623;color:#20160a;font-weight:800;width:30px;height:30px;border-radius:50%;text-align:center;line-height:30px;margin-bottom:8px}
.hiw-step h3{margin:0 0 6px;font-size:1.02rem}
.hiw-step p{margin:0;font-size:.93rem}
.area-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin:16px 0}
.area-card{display:block;background:#fff;border:1px solid #e2e9f0;border-radius:12px;padding:14px 16px;text-decoration:none;color:inherit}
.area-card:hover{border-color:#f5a623}
.area-card strong{display:block;margin-bottom:4px}
.area-card span{font-size:.88rem;color:#5b6b7c}
.emg{background:#991b1b;color:#fff;padding:16px 18px;text-align:center;font-size:1.02rem}
.emg a{color:#fff;font-weight:800}
.est-band{background:#0e2233;color:#fff;padding:20px 18px;text-align:center}
.est-band a{color:#fff}