/* Layout: classic HVAC contractor page — utility bar, header + menu, blue hero, service cards, product tiles, expert band, subsidies, promise, zones by region, FAQ, quote, big footer, mobile call bar. */
:root{
  --bg:#f9faff; --surface:#FFFFFF; --ink:#1a2e42; --head:#0d1721; --muted:#42566a; --line:#C6D2E7;
  --blue:#0060d8; --blue-deep:#00245D; --blue-soft:#eaf2fd; --on-blue:#FFFFFF;
  --cta:#f7931e; --cta-fg:#0d1721; --check:#0060d8; --util-bg:#f9faff; --util-fg:#42566a;
  --display:"Roboto",Arial,Helvetica,sans-serif;
  --body:"Roboto",Arial,Helvetica,sans-serif;
  --r:10px; --wrap:1180px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#081221; --surface:#0E1C31; --ink:#E4ECF7; --head:#FFFFFF; --muted:#9DB0C8; --line:#1E3352;
  --blue:#3D8BF0; --blue-deep:#00245D; --blue-soft:#10284A; --on-blue:#FFFFFF;
  --cta:#f7931e; --cta-fg:#0d1721; --check:#5AA2F5; --util-bg:#0B1729; --util-fg:#9DB0C8; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#081221; --surface:#0E1C31; --ink:#E4ECF7; --head:#FFFFFF; --muted:#9DB0C8; --line:#1E3352;
  --blue:#3D8BF0; --blue-deep:#00245D; --blue-soft:#10284A; --on-blue:#FFFFFF;
  --cta:#f7931e; --cta-fg:#0d1721; --check:#5AA2F5; --util-bg:#0B1729; --util-fg:#9DB0C8; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{background:var(--bg);color:var(--ink);font:16px/1.6 var(--body);margin:0}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface)}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3,h4{font-family:var(--display);line-height:1.15;text-wrap:balance;margin:0;color:var(--head);font-weight:700}
h1{font-size:clamp(2.3rem,5.6vw,3.8rem);letter-spacing:-.01em;font-weight:900}
h2{font-size:clamp(1.7rem,3.6vw,2.4rem);letter-spacing:-.01em}
h3{font-size:1.25rem}
h2 b,h1 b{color:var(--blue)}
p{margin:0}
a{color:var(--blue)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.eyebrow{font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--blue)}
.lead{font-size:1.1rem;color:var(--muted);max-width:62ch}
section{padding-block:72px}
.white{background:var(--surface)}
.center{text-align:center}
.center .lead{margin-inline:auto}
.sec-head{display:grid;gap:12px;margin-bottom:40px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;font:700 1rem var(--body);padding:.85em 1.4em;border-radius:var(--r);text-decoration:none;border:2px solid transparent;cursor:pointer;text-align:center}
.btn-cta{background:var(--cta);color:var(--cta-fg)}
.btn-cta:hover{filter:brightness(1.07)}
.btn-blue{background:var(--blue);color:var(--on-blue)}
.btn-ghost{border-color:currentColor;color:inherit;background:transparent}

/* utility bar */
.util{background:var(--util-bg);color:var(--util-fg);font-size:.88rem;border-bottom:1px solid var(--line)}
.util .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:6px 22px;padding-block:8px}
.util span{margin-right:auto;font-weight:500}
.util a{color:var(--blue);text-decoration:none;font-weight:700}
.util a:hover{text-decoration:underline}
@media (max-width:640px){.util .hide-s{display:none}}

/* header */
header{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 6px 20px -16px rgba(11,34,64,.5)}
.hdr{display:flex;align-items:center;gap:24px;padding-block:12px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);margin-right:auto}
.logo b{font:800 1.35rem var(--display);letter-spacing:-.01em;display:block;line-height:1.1}
.logo small{display:block;font-size:.7rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;line-height:1.2}
nav{display:flex;gap:24px}
nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.97rem}
nav a:hover{color:var(--blue)}
@media (max-width:980px){nav{display:none}}
@media (max-width:520px){.hdr .btn{display:none}}

/* hero */
.hero{background:linear-gradient(110deg,#0060d8 0%,#0060d8 40%,#00b4ff 100%);color:#FFFFFF;padding-block:64px 72px;position:relative;overflow:hidden}
.hero h1{color:#FFFFFF}
.hero h1 b{color:#FFFFFF;text-decoration:underline;text-decoration-color:#f7931e;text-decoration-thickness:6px;text-underline-offset:8px}
.hero-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center}
.hero-grid>*{min-width:0}
.hero .tag{font:700 1.25rem var(--display);color:#E6F3FF;margin-top:10px}
.hero ul{list-style:none;padding:0;margin:26px 0 0;display:grid;gap:10px}
.hero li{display:flex;gap:12px;align-items:center;font-size:1.08rem}
.hero li svg{flex:none;color:#FFFFFF}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero .btn-ghost{color:#FFFFFF}
.hero-art{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);border-radius:16px;padding:18px}
.hero-art svg{display:block;width:100%;height:auto}
.hero-art p{display:flex;justify-content:space-between;gap:12px;margin-top:12px;font-size:.9rem;color:#E6F3FF}
.hero-art p b{color:#FFFFFF;font-family:var(--display);font-size:1.3rem;display:block}
@media (max-width:880px){.hero-grid{grid-template-columns:1fr}}

/* services cards */
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px;display:grid;gap:12px;align-content:start;grid-template-rows:auto auto 1fr auto}
.card .ico{width:52px;height:52px;border-radius:12px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center}
.card p{color:var(--muted)}
.card .btn{justify-self:start;margin-top:6px}
.fin-note{margin-top:22px;text-align:center;font-weight:600;color:var(--muted)}
@media (max-width:860px){.cards{grid-template-columns:1fr}}

/* product tiles */
.tech{display:grid;grid-template-columns:1fr 1.4fr;gap:48px;align-items:center}
.tech>*{min-width:0}
.tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.tile{display:grid;gap:6px;padding:22px;border-radius:12px;background:var(--bg);border:1px solid var(--line);text-decoration:none;color:var(--ink)}
.tile:hover{border-color:var(--blue)}
.tile b{font:700 1.1rem var(--display)}
.tile span{color:var(--muted);font-size:.93rem}
.trio{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:48px;border-block:1px solid var(--line)}
.trio div{padding:22px 16px;text-align:center;font-size:1.05rem}
.trio div+div{border-left:1px solid var(--line)}
.trio b{color:var(--blue)}
@media (max-width:860px){.tech{grid-template-columns:1fr}}
@media (max-width:560px){.tiles{grid-template-columns:1fr}.trio{grid-template-columns:1fr}.trio div+div{border-left:0;border-top:1px solid var(--line)}}

/* expert band */
.expert{background:#0044a3;color:#FFFFFF;padding-block:44px}
.expert .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:20px 40px}
.expert h2{color:#FFFFFF;margin-right:auto}
.expert small{display:block;font:500 .95rem var(--body);opacity:.85;margin-top:6px}
.expert .phones{display:flex;flex-wrap:wrap;gap:12px}
.expert .btn-ghost{color:#FFFFFF}
.expert .btn-light{background:#f7931e;color:#0d1721}

/* subsidies */
.calc{display:grid;grid-template-columns:1.1fr 1fr;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.calc>*{min-width:0}
.calc form{padding:28px;display:grid;gap:20px}
.field{display:grid;gap:8px}
.field label,.field legend{font-weight:600;font-size:.95rem}
fieldset{border:0;padding:0;margin:0}
select,input,textarea{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:.7em .8em;width:100%}
.seg{display:flex;gap:8px;flex-wrap:wrap}
.seg label{flex:1 1 140px;display:flex;gap:8px;align-items:center;border:1px solid var(--line);border-radius:8px;padding:.7em .8em;cursor:pointer;font-weight:500}
.seg input{width:auto;margin:0;accent-color:var(--blue)}
.seg label:has(input:checked){border-color:var(--blue);background:var(--blue-soft)}
.result{background:var(--blue-deep);color:#E6EEF8;padding:28px;display:grid;gap:12px;align-content:center}
.result .amt{font:800 clamp(2.4rem,6vw,3.4rem) var(--display);font-variant-numeric:tabular-nums;line-height:1;color:#FFFFFF}
.result small{opacity:.78;font-size:.85rem;line-height:1.5}
.sub-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:32px}
.sub-points div{display:grid;gap:6px}
.sub-points b{font:700 1.08rem var(--display)}
.sub-points span{color:var(--muted)}
@media (max-width:760px){.calc{grid-template-columns:1fr}.sub-points{grid-template-columns:1fr}}

/* brands */
.brands{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;list-style:none;padding:0;margin:0}
.brands li{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:16px 28px;font:900 1.15rem var(--display);color:var(--muted);letter-spacing:.02em}
.brands-note{margin-top:22px;text-align:center}
.brands-note b{font-family:var(--display);font-size:1.15rem}
.brands-note p{color:var(--muted);margin-top:4px}

/* promise */
.promise{display:grid;grid-template-columns:1fr 1.5fr;gap:48px;align-items:start}
.promise>*{min-width:0}
.promise-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 32px}
.promise-list div{display:grid;gap:8px;border-top:3px solid var(--blue);padding-top:16px}
.promise-list p{color:var(--muted)}
@media (max-width:860px){.promise{grid-template-columns:1fr}}
@media (max-width:520px){.promise-list{grid-template-columns:1fr}}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;counter-reset:s}
.steps li{counter-increment:s;display:grid;gap:8px;align-content:start;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:22px}
.steps li::before{content:counter(s);width:34px;height:34px;border-radius:50%;background:var(--blue);color:var(--on-blue);display:grid;place-items:center;font:700 1rem var(--display)}
.steps p{color:var(--muted)}
@media (max-width:860px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.steps{grid-template-columns:1fr}}

/* zones */
.zones{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.zones>div{min-width:0}
.zones h3{font-size:1.05rem;margin-bottom:8px;color:var(--blue)}
.zones ul{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.zones li{color:var(--ink)}
@media (max-width:860px){.zones{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* faq */
.faq{display:grid;max-width:860px;margin-inline:auto;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:18px 40px 18px 0;font:600 1.08rem var(--body);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:6px;top:12px;font:700 1.6rem var(--display);color:var(--blue)}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 20px;color:var(--muted);max-width:70ch}

/* contact */
.contact{display:grid;grid-template-columns:1fr 1.25fr;gap:48px}
.contact>*{min-width:0}
.contact form{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:28px;display:grid;gap:16px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ways{display:grid;gap:12px;margin-top:24px}
.ways a,.ways div{display:grid;gap:2px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--ink)}
.ways small{color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;font-weight:600}
.ways b{font:700 1.35rem var(--display)}
.form-ok{background:var(--blue-soft);border-radius:8px;padding:12px 14px;font-weight:500}
@media (max-width:860px){.contact{grid-template-columns:1fr}}
@media (max-width:480px){.row2{grid-template-columns:1fr}}

/* footer */
footer{background:#0044a3;color:#D6E4F7;padding-block:52px 110px;font-size:.93rem}
footer a{color:#D6E4F7;text-decoration:none}
footer a:hover{color:#FFFFFF;text-decoration:underline}
.ft{display:grid;grid-template-columns:1.5fr repeat(4,minmax(0,1fr));gap:32px}
.ft>*{min-width:0}
footer h4{color:#FFFFFF;font-size:1rem;margin-bottom:12px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
.ft-brand b{font:800 1.4rem var(--display);color:#FFFFFF;display:block}
.ft-brand p{margin-top:12px}
.ft-brand .tel{font:700 1.3rem var(--display);color:#FFFFFF;display:inline-block;margin-top:12px}
.legal{margin-top:40px;padding-top:18px;border-top:1px solid rgba(255,255,255,.2);font-size:.82rem;opacity:.85;display:flex;flex-wrap:wrap;gap:6px 20px;justify-content:space-between}
@media (max-width:980px){.ft{grid-template-columns:repeat(2,minmax(0,1fr))}.ft-brand{grid-column:1/-1}}
@media (min-width:761px){footer{padding-bottom:40px}}

/* mobile call bar */
.mbar{position:fixed;left:0;right:0;bottom:0;z-index:30;display:none;gap:10px;background:var(--surface);border-top:1px solid var(--line);
  padding:10px max(12px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom,0px)) max(12px,env(safe-area-inset-left,0px))}
.mbar .btn{flex:1;padding:.8em .6em}
@media (max-width:760px){.mbar{display:flex}}

/* ---- multi-page additions ---- */
.crumbs{font-size:.85rem;color:#E6F3FF;margin-bottom:14px}
.crumbs a{color:#FFFFFF}
.hero.sub{padding-block:44px 52px}
.hero.sub h1{font-size:clamp(2rem,4.6vw,3rem)}
.hero.sub .lead{color:#E6F3FF;margin-top:14px}
.prose{max-width:760px;display:grid;gap:16px}
.prose h2{margin-top:18px}
.prose p,.prose li{color:var(--ink)}
.prose ul,.prose ol{margin:0;padding-left:1.2em;display:grid;gap:6px}
.two{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:start}
.two>*{min-width:0}
.aside{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;display:grid;gap:12px}
.aside ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.aside a{font-weight:600}
@media (max-width:860px){.two{grid-template-columns:1fr}}
.zones a,.zones h3 a{color:inherit}
.zones li a{color:var(--blue);font-weight:600}
.cookie{position:fixed;left:max(12px,env(safe-area-inset-left,0px));right:max(12px,env(safe-area-inset-right,0px));bottom:calc(84px + env(safe-area-inset-bottom,0px));z-index:40;max-width:560px;margin-inline:auto;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:0 20px 50px -20px rgba(0,36,93,.45);padding:18px;display:grid;gap:12px;font-size:.92rem}
.cookie .row{display:flex;flex-wrap:wrap;gap:10px}
.cookie .btn{padding:.6em 1em;font-size:.92rem}
@media (min-width:761px){.cookie{bottom:20px;left:auto;right:20px}}