:root{--navy:#0d263f;--navy2:#132f4c;--blue:#2ba9e0;--ice:#eaf7fd;--ink:#13202a;--muted:#64717c;--line:#dce5eb;--white:#fff;--orange:#ffb440;--radius:22px;--shadow:0 18px 50px rgba(13,38,63,.12)}
*{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:1.55}a{color:inherit;text-decoration:none}.container{width:min(1160px,calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(13,38,63,.08)}.nav-wrap{height:80px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;min-width:max-content}.brand-mark{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--blue),#6fd0ef);display:grid;place-items:center;box-shadow:0 8px 20px rgba(43,169,224,.25)}.brand-mark svg{width:33px;fill:white}.brand>span:last-child{display:grid;grid-template-columns:auto auto;grid-template-rows:auto auto;line-height:.85;letter-spacing:-.04em}.brand strong{font-size:20px}.brand em{font-size:20px;font-style:normal;color:var(--blue);font-weight:800}.brand small{grid-column:1/3;font-weight:900;letter-spacing:.32em;font-size:8px;margin-top:5px;color:#5d6d79}.site-nav{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:700;color:#42515d}.site-nav a:hover{color:var(--blue)}.nav-cta{padding:11px 16px;border-radius:999px;background:var(--navy);color:#fff!important}.menu-toggle{display:none}.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--navy) 0%,#0f3657 55%,#124b71 100%);color:white;padding:92px 0 80px}.hero:after{content:"";position:absolute;inset:auto -8% -48% 26%;height:430px;border:1px solid rgba(255,255,255,.09);border-radius:50%;transform:rotate(-9deg)}.hero-glow{position:absolute;border-radius:50%;filter:blur(1px);opacity:.3}.hero-glow-one{width:420px;height:420px;background:#2ba9e0;right:-180px;top:-200px}.hero-glow-two{width:230px;height:230px;background:#87d8f6;left:-130px;bottom:-80px}.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .8fr;gap:72px;align-items:center}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:12px;font-weight:800;color:#93dff8;margin:0 0 16px}.eyebrow.dark{color:#258fbf}.hero h1,.section h2,.cta-band h2{margin:0;letter-spacing:-.055em;line-height:1.02}.hero h1{font-size:clamp(48px,7vw,86px);max-width:700px}.hero h1 span{color:#7ed6f3}.hero-lede{font-size:20px;color:#d8e7ef;max-width:650px;margin:24px 0 0}.hero-actions{display:flex;gap:14px;margin:34px 0}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;padding:14px 22px;font-size:15px;font-weight:800;cursor:pointer;transition:.2s transform,.2s box-shadow}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(43,169,224,.26)}.btn-secondary{border:1px solid rgba(255,255,255,.28);color:#fff;background:rgba(255,255,255,.06)}.btn-light{background:white;color:var(--navy)}.trust-row{display:grid;grid-template-columns:repeat(3,1fr);max-width:650px;border-top:1px solid rgba(255,255,255,.14);padding-top:24px}.trust-row div{padding-right:22px}.trust-row strong{display:block;font-size:25px}.trust-row span{display:block;color:#abc0cd;font-size:12px}.hero-card{background:rgba(255,255,255,.96);color:var(--ink);border-radius:26px;padding:30px;box-shadow:0 28px 70px rgba(0,0,0,.18);border:1px solid rgba(255,255,255,.45)}.card-kicker{font-size:12px;text-transform:uppercase;letter-spacing:.15em;font-weight:900;color:#298db9}.hero-card h2{font-size:30px;letter-spacing:-.04em;margin:4px 0 8px}.hero-card>p:not(.card-kicker){color:#66747f;margin:0 0 20px}.quick-link{display:flex;justify-content:space-between;padding:13px 2px;border-top:1px solid #e5edf2;font-weight:700;font-size:14px}.quick-link b{color:var(--blue)}.service-strip{background:#081d31;color:#cfe0ea;border-top:1px solid rgba(255,255,255,.06)}.strip-grid{min-height:58px;display:grid;grid-template-columns:repeat(6,1fr);align-items:center;text-align:center;font-size:12px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.strip-grid span+span{border-left:1px solid rgba(255,255,255,.1)}.section{padding:94px 0}.section-heading{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:end;margin-bottom:40px}.section h2{font-size:clamp(38px,5vw,58px);color:#11273a;max-width:760px}.section-heading>p{color:var(--muted);font-size:17px}.cards.three{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.service-card{position:relative;border:1px solid var(--line);border-radius:var(--radius);padding:30px;background:white;min-height:320px;box-shadow:0 8px 28px rgba(20,50,75,.05);display:flex;flex-direction:column}.service-card.feature{background:linear-gradient(180deg,#f1fbff,#fff);border-color:#bde7f8}.service-card .icon{width:46px;height:46px;border-radius:14px;background:var(--ice);display:grid;place-items:center;color:#238cb9;font-weight:900;font-size:13px}.service-card h3{font-size:24px;letter-spacing:-.035em;margin:26px 0 10px}.service-card p{color:var(--muted);margin:0 0 20px}.service-card a{margin-top:auto;color:#188bbb;font-weight:800}.price{display:flex;align-items:baseline;gap:10px;margin:0 0 18px}.price span{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}.price strong{font-size:30px;color:var(--navy)}.contrast{background:var(--navy);color:white}.contrast h2{color:white}.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}.lead{font-size:18px;color:#c5d5df;max-width:650px}.dark-text{color:var(--muted)}.why-list{display:grid;gap:12px}.why-list>div{display:grid;grid-template-columns:44px 1fr;gap:14px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.05);padding:18px;border-radius:18px}.why-list span{width:34px;height:34px;border-radius:50%;background:#163f61;color:#78d6f5;display:grid;place-items:center;font-weight:900}.why-list p{margin:0;color:#c8d8e2}.why-list strong{color:white}.area-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center}.pills{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}.pills span{padding:9px 13px;background:#eff7fa;border:1px solid #d8ebf2;border-radius:999px;font-size:13px;font-weight:800;color:#315365}.map-card{height:360px;position:relative;overflow:hidden;border-radius:28px;background:linear-gradient(135deg,#dfeef4,#f8fbfc);border:1px solid #d8e5eb;box-shadow:var(--shadow)}.map-card:before,.map-card:after{content:"";position:absolute;background:#fff;border-radius:999px;transform:rotate(-20deg)}.map-card:before{width:560px;height:14px;top:130px;left:-100px}.map-card:after{width:420px;height:10px;top:250px;left:50px;transform:rotate(19deg)}.map-line{position:absolute;height:4px;background:#b6ccd7;border-radius:999px;opacity:.8}.line-a{width:380px;top:78px;left:70px;transform:rotate(12deg)}.line-b{width:410px;top:202px;left:80px;transform:rotate(-16deg)}.line-c{width:270px;top:280px;left:210px;transform:rotate(28deg)}.pin{position:absolute;z-index:3;padding:9px 12px 9px 30px;background:white;border-radius:999px;box-shadow:0 8px 20px rgba(23,65,89,.12);font-size:12px;font-weight:900}.pin:before{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--blue);left:12px;top:50%;transform:translateY(-50%);box-shadow:0 0 0 5px rgba(43,169,224,.13)}.pin-1{left:24%;top:48%}.pin-2{left:49%;top:31%}.pin-3{right:14%;top:53%}.map-caption{position:absolute;left:22px;right:22px;bottom:20px;background:rgba(13,38,63,.9);color:white;padding:12px 14px;border-radius:14px;font-size:12px;z-index:4}.cta-band{background:linear-gradient(135deg,#159bd0,#47bae5);color:white;padding:52px 0}.cta-grid{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}.cta-band h2{font-size:44px}.cta-band p{margin:10px 0 0;max-width:650px;color:#eafaff}.contact-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:start}.contact-note{margin-top:28px;border-left:4px solid var(--blue);padding:15px 18px;background:#f2f9fc;color:#52646f;border-radius:0 12px 12px 0}.contact-form{border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow)}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.contact-form label{display:grid;gap:7px;font-size:12px;text-transform:uppercase;letter-spacing:.08em;font-weight:900;color:#40505d;margin-bottom:14px}.contact-form input,.contact-form select,.contact-form textarea{width:100%;border:1px solid #cedbe3;border-radius:12px;padding:13px 14px;font:inherit;font-size:15px;color:var(--ink);background:white;outline:none}.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{border-color:#4ebce8;box-shadow:0 0 0 4px rgba(43,169,224,.12)}.form-status{font-size:13px;color:#4f6371;min-height:20px}.site-footer{background:#081a2b;color:#b9cbd6;padding:56px 0 22px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px}.footer-grid>div:not(.brand){display:grid;align-content:start;gap:8px;font-size:13px}.footer-grid strong{color:white}.footer-grid a:hover{color:white}.footer-brand strong{color:white}.footer-brand small{color:#8da7b7}.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:20px;font-size:12px;color:#7994a4}

/* Service appreciation discount */
.promo-section{padding-top:72px;padding-bottom:72px;background:linear-gradient(180deg,#f8fcfe,#fff)}
.promo-card{display:grid;grid-template-columns:220px 1fr;gap:34px;align-items:center;background:linear-gradient(135deg,#fff 0%,#f1faff 55%,#e7f8ff 100%);border:1px solid #bde7f6;border-radius:28px;padding:34px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.promo-card:after{content:"";position:absolute;width:240px;height:240px;border:26px solid rgba(255,122,0,.12);border-radius:50%;right:-110px;top:-140px}
.promo-badge{width:180px;height:180px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(145deg,var(--navy),#0a4f82);color:#fff;font-size:38px;font-weight:950;letter-spacing:-.04em;border:9px solid #fff;box-shadow:0 14px 36px rgba(6,43,79,.2);position:relative;z-index:1}
.promo-badge:after{content:"SERVE10";position:absolute;bottom:34px;font-size:13px;letter-spacing:.16em;color:var(--orange)}
.promo-copy{position:relative;z-index:2}.promo-copy h2{font-size:clamp(34px,4vw,52px);margin-bottom:14px}.promo-copy>p{max-width:780px;color:var(--muted);font-size:17px}
.promo-code-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:22px 0 12px}.promo-code-row>span{font-size:12px;text-transform:uppercase;letter-spacing:.14em;font-weight:900;color:#516271}.promo-code-row>strong{font-size:22px;letter-spacing:.11em;color:var(--navy);background:#fff;border:2px dashed var(--orange);border-radius:12px;padding:7px 13px}.promo-code-row>a{font-weight:900;color:#008fca}.promo-terms{font-size:12px!important;color:#75838e!important;margin-bottom:0}
/* About SteadyAir */
.about-section{background:#fff}.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}.about-copy h2{font-size:clamp(38px,5vw,58px);color:#11273a;margin:0 0 22px;letter-spacing:-.055em;line-height:1.02}.about-body{font-size:17px;color:var(--muted);max-width:720px}.about-panel{background:linear-gradient(145deg,#031b33,#073e69);border-radius:28px;padding:30px;color:#fff;box-shadow:0 22px 55px rgba(6,43,79,.22);position:relative;overflow:hidden}.about-panel:after{content:"";position:absolute;right:-95px;bottom:-105px;width:230px;height:230px;border:24px solid rgba(255,122,0,.8);border-radius:50%}.about-panel img{width:230px;max-width:75%;height:auto;display:block;background:#fff;border-radius:18px;padding:10px;margin-bottom:26px;position:relative;z-index:1}.about-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;position:relative;z-index:1}.about-stats div{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:16px 12px}.about-stats strong{display:block;font-size:28px;color:#fff}.about-stats span{display:block;font-size:11px;color:#c7ddeb;line-height:1.35}.service-heritage{margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);display:grid;gap:4px;position:relative;z-index:1}.service-heritage strong{color:var(--orange);text-transform:uppercase;letter-spacing:.12em;font-size:11px}.service-heritage span{font-weight:800;font-size:14px}

@media(max-width:900px){.promo-card{grid-template-columns:1fr}.promo-badge{width:150px;height:150px}.about-grid{grid-template-columns:1fr;gap:38px}.about-panel{max-width:700px}.site-nav{display:none;position:absolute;top:80px;left:20px;right:20px;background:white;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:5px}.site-nav.open{display:flex}.site-nav a{padding:10px}.menu-toggle{display:block;border:0;background:#eff6f9;color:var(--navy);padding:10px 14px;border-radius:999px;font-weight:800}.hero{padding-top:62px}.hero-grid,.why-grid,.area-grid,.contact-grid,.section-heading{grid-template-columns:1fr;gap:38px}.hero-card{max-width:620px}.cards.three{grid-template-columns:1fr}.service-card{min-height:auto}.strip-grid{grid-template-columns:repeat(3,1fr);gap:16px;padding:18px 0}.strip-grid span+span{border:0}.footer-grid{grid-template-columns:1fr 1fr}.cta-grid{grid-template-columns:1fr}.cta-grid .btn{justify-self:start}}
@media(max-width:560px){.promo-card{padding:24px}.promo-badge{width:132px;height:132px;font-size:30px}.promo-badge:after{bottom:25px;font-size:11px}.promo-code-row{align-items:flex-start}.about-stats{grid-template-columns:1fr}.container{width:min(100% - 26px,1160px)}.nav-wrap{height:70px}.site-nav{top:70px;left:13px;right:13px}.brand-mark{width:42px;height:42px}.hero{padding:54px 0}.hero h1{font-size:50px}.hero-lede{font-size:17px}.hero-actions{flex-direction:column;align-items:stretch}.trust-row{grid-template-columns:1fr;gap:14px}.trust-row div{border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:12px}.section{padding:70px 0}.section h2{font-size:40px}.field-row{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.map-card{height:320px}.cta-band h2{font-size:38px}}

/* SteadyAir 2026 brand refresh */
:root{--navy:#062b4f;--navy2:#0b3d68;--blue:#00a9e8;--cyan:#14c5f3;--orange:#ff7a00;--gold:#ffb000;--ice:#eaf9ff;--ink:#0b2b49;--muted:#5d6b78;--line:#d6e6ef;--shadow:0 18px 50px rgba(6,43,79,.14)}
.site-header{background:rgba(255,255,255,.96);border-bottom:3px solid var(--blue)}
.brand-logo{display:block;width:205px;height:62px;object-fit:contain;object-position:left center}
.hero{background:radial-gradient(circle at 78% 20%,rgba(20,197,243,.18),transparent 28%),linear-gradient(135deg,#031b33 0%,#062b4f 48%,#0a4d7d 100%)}
.hero h1 span{color:var(--cyan)}
.hero:before{content:"";position:absolute;left:-8%;right:-8%;bottom:-78px;height:125px;background:linear-gradient(8deg,transparent 0 25%,var(--orange) 26% 30%,var(--cyan) 31% 42%,#0877bd 43% 55%,transparent 56%);opacity:.9;pointer-events:none}
.btn-primary{background:linear-gradient(135deg,var(--orange),#ff9a16);box-shadow:0 10px 24px rgba(255,122,0,.28)}
.nav-cta{background:linear-gradient(135deg,var(--navy),#0b4d7d)}
.quick-link b,.service-card a{color:#008fca}.service-card.feature{background:linear-gradient(180deg,#eaf9ff,#fff);border-color:#9de3f7}.service-card.feature:after{content:"";position:absolute;inset:0 0 auto;height:5px;background:linear-gradient(90deg,var(--blue),var(--orange));border-radius:22px 22px 0 0}.service-photo{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:15px;margin-bottom:18px;border:1px solid #cbe6f0}.service-card.feature .icon{position:absolute;right:42px;top:42px;background:var(--orange);color:white;box-shadow:0 6px 16px rgba(0,0,0,.18)}
.contrast{background:linear-gradient(135deg,#031b33,#062b4f 65%,#073e69)}
.why-list span{background:#0b4d7d;color:#fff;border:2px solid var(--cyan)}
.cta-band{background:linear-gradient(110deg,#062b4f 0%,#0879ba 60%,#00a9e8 100%);position:relative;overflow:hidden}.cta-band:after{content:"";position:absolute;width:280px;height:280px;border:28px solid rgba(255,122,0,.9);border-radius:50%;right:-150px;top:-180px}
.contact-note{border-left-color:var(--orange)}
.site-footer{background:#03182c;border-top:5px solid var(--orange)}
.footer-logo{width:230px;height:90px;filter:drop-shadow(0 3px 8px rgba(0,0,0,.2));background:white;border-radius:12px;padding:8px}
@media(max-width:560px){.brand-logo{width:160px;height:50px}.service-card.feature .icon{right:28px;top:28px}}


/* Photo gallery — original customer-uploaded images are displayed without edits */
.gallery-section { background: #f5f8fb; }
.photo-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}
.gallery-item {
  margin: 0;
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(15,39,64,.10);
  border: 1px solid rgba(15,39,64,.08);
}
.gallery-item img {
  display: block;
  width: 100%;
  height: 330px;
  object-fit: cover;
  object-position: center;
}
.gallery-item.gallery-tall img { height: 430px; }
.gallery-item figcaption {
  padding: 13px 16px 15px;
  font-weight: 700;
  color: #0f2740;
}
@media (max-width: 900px) {
  .photo-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .photo-gallery { grid-template-columns: 1fr; }
  .gallery-item img, .gallery-item.gallery-tall img { height: auto; max-height: none; object-fit: contain; }
}


/* Amazon replacement filter shop */
.filter-shop{background:linear-gradient(180deg,#fff,#f3faff)}
.filter-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.filter-card{border:1px solid var(--line);border-radius:22px;padding:25px;background:#fff;box-shadow:0 10px 30px rgba(6,43,79,.07);display:flex;flex-direction:column;align-items:flex-start}
.filter-size{display:inline-block;background:var(--navy);color:#fff;border-radius:999px;padding:7px 12px;font-weight:900;letter-spacing:.03em}
.filter-card h3{font-size:21px;margin:20px 0 8px;color:var(--navy)}
.filter-card p{color:var(--muted);margin:0 0 22px;flex:1}
.filter-card .btn{width:100%;padding:12px 15px}
.filter-help{margin-top:24px;padding:22px 24px;border-radius:20px;background:var(--navy);color:#fff;display:flex;justify-content:space-between;gap:20px;align-items:center}
.filter-help div{display:grid;gap:4px}.filter-help span{color:#c9dce8}.filter-contact{background:#fff;color:var(--navy);white-space:nowrap}
.affiliate-disclosure{font-size:12px;color:#66747f;margin:18px 2px 0}
@media(max-width:900px){.filter-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.filter-grid{grid-template-columns:1fr}.filter-help{align-items:stretch;flex-direction:column}.filter-contact{width:100%}}

.filter-selector{border:1px solid var(--line);border-radius:24px;padding:26px;background:#fff;box-shadow:0 10px 30px rgba(6,43,79,.07);display:grid;gap:22px}
.filter-selector label,.filter-selector fieldset{display:grid;gap:9px}.filter-selector select{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;font:inherit;color:var(--navy)}
.filter-selector fieldset{border:0;padding:0;margin:0}.filter-selector legend{margin-bottom:10px}.merv-choices{display:grid;grid-template-columns:1fr 1fr;gap:14px}.merv-choices label{grid-template-columns:auto 1fr;align-items:start;border:1px solid var(--line);border-radius:16px;padding:16px;cursor:pointer}.merv-choices input{margin-top:4px}.merv-choices span{display:grid;gap:4px}.merv-choices small{color:var(--muted);line-height:1.45}.filter-buy{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:4px}.filter-buy p{margin:8px 0 0;color:var(--muted)}
@media(max-width:700px){.merv-choices{grid-template-columns:1fr}.filter-buy{align-items:stretch;flex-direction:column}.filter-buy .btn{width:100%}}

/* HVAC supplies storefront */
.supply-divider{display:flex;align-items:center;gap:16px;margin:42px 0 24px;color:var(--navy);font-weight:900;text-transform:uppercase;letter-spacing:.08em;font-size:12px}.supply-divider:before,.supply-divider:after{content:"";height:1px;background:var(--line);flex:1}.supply-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.supply-card{border:1px solid var(--line);border-radius:22px;padding:25px;background:#fff;box-shadow:0 10px 30px rgba(6,43,79,.07);display:flex;flex-direction:column}.supply-type{align-self:flex-start;background:var(--ice);color:#238cb9;border-radius:999px;padding:7px 11px;font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}.supply-card h3{font-size:23px;color:var(--navy);margin:18px 0 8px}.supply-card p{color:var(--muted);margin:0 0 22px;flex:1}.supply-actions{display:grid;gap:12px}.supply-actions .btn{width:100%}.install-link{font-size:13px;font-weight:800;color:#188bbb;text-align:center}.supply-help{margin-top:24px}.affiliate-disclosure{font-size:12px;color:var(--muted);margin:18px 4px 0;line-height:1.55}@media(max-width:760px){.supply-grid{grid-template-columns:1fr}}