/* Layout: mechanical-drawing sheets — cool galvanized paper, ink linework, copper refrigerant-line accent; wide-set display type over a plain reading column. */
:root{
  --paper:#F2F4F5; --panel:#FFFFFF; --ink:#13202A; --steel:#556570; --line:#CBD3D8;
  --copper:#A9561F; --copper-ink:#FFFFFF; --chill:#1D5A84; --band:#13202A; --band-ink:#E9EEF1; --band-muted:#9FB0BB;
  --f-display:"Archivo","Arial Narrow",Arial,sans-serif;
  --f-body:"Source Sans 3","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --s-1:.875rem; --s0:1.0625rem; --s1:1.25rem; --s2:1.6rem; --s3:clamp(1.9rem,4.2vw,2.6rem); --s4:clamp(2.3rem,6vw,3.9rem);
  --wrap:72rem; --radius:4px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#0D141A; --panel:#131C23; --ink:#E4EAEE; --steel:#94A4AE; --line:#26343E;
  --copper:#D9844A; --copper-ink:#140B05; --chill:#79B0D8; --band:#071017; --band-ink:#E4EAEE; --band-muted:#8C9DA8; color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#0D141A; --panel:#131C23; --ink:#E4EAEE; --steel:#94A4AE; --line:#26343E;
  --copper:#D9844A; --copper-ink:#140B05; --chill:#79B0D8; --band:#071017; --band-ink:#E4EAEE; --band-muted:#8C9DA8; color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:var(--s0);line-height:1.6;-webkit-text-size-adjust:100%;padding-bottom:4.5rem}
@media (min-width:860px){body{padding-bottom:0}}
img,svg{max-width:100%;height:auto}
a{color:var(--chill);text-underline-offset:3px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid var(--copper);outline-offset:2px}
h1,h2,h3{font-family:var(--f-display);font-stretch:112%;line-height:1.08;text-wrap:balance;margin:0;letter-spacing:-.01em}
h1{font-size:var(--s4);font-weight:800}
h2{font-size:var(--s3);font-weight:800}
h3{font-size:var(--s1);font-weight:700;font-stretch:105%}
p{margin:0}
.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))}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:16px;background:var(--panel);padding:.5rem 1rem;z-index:50}
.tag{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--steel)}
.tag b{color:var(--copper);font-weight:500}

/* header */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--paper)}
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--paper);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;gap:1rem;min-height:4.25rem}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink);margin-right:auto}
.brand svg{width:34px;height:34px;flex:none}
.brand span{font-family:var(--f-display);font-stretch:125%;font-weight:800;font-size:1.05rem;letter-spacing:.02em;line-height:1}
.brand small{display:block;font-family:var(--f-mono);font-size:.62rem;letter-spacing:.14em;color:var(--steel);font-weight:500;margin-top:.25rem}
.nav{display:none}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:1.25rem}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
.nav a:hover,.nav a[aria-current="page"]{color:var(--copper)}
.head-call{display:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--f-display);font-stretch:110%;font-weight:700;font-size:1rem;padding:.8rem 1.2rem;border-radius:var(--radius);text-decoration:none;border:2px solid transparent;cursor:pointer;line-height:1.1}
.btn-primary{background:var(--copper);color:var(--copper-ink)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-line:hover{background:var(--ink);color:var(--paper)}
.menu-btn{background:none;border:1px solid var(--line);border-radius:var(--radius);color:var(--ink);padding:.55rem .7rem;font:600 .9rem var(--f-body);cursor:pointer}
.mobile-nav{border-top:1px solid var(--line);background:var(--paper)}
.mobile-nav ul{list-style:none;margin:0;padding:.5rem 0 1rem}
.mobile-nav a{display:block;padding:.7rem 0;color:var(--ink);text-decoration:none;font-weight:600;border-bottom:1px solid var(--line)}
@media (min-width:1060px){.nav{display:block}.menu-btn,.mobile-nav{display:none!important}.head-call{display:inline-flex}}

/* hero */
.hero{border-bottom:1px solid var(--line);background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:32px 32px;background-position:-1px -1px}
.hero .wrap{display:grid;gap:2rem;padding-block:3rem 3.25rem;align-items:center}
.hero-copy{display:grid;gap:1.1rem;min-width:0;background:var(--paper);padding:1.25rem;border:1px solid var(--line)}
.hero .lede{font-size:var(--s1);color:var(--steel);max-width:36rem}
.hero .actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:.4rem}
.hero-figure{background:var(--paper);border:1px solid var(--line);padding:1rem;min-width:0}
.hero-figure svg{display:block;width:100%}
.hero-figure figcaption{margin-top:.5rem}
@media (min-width:900px){.hero .wrap{grid-template-columns:1.1fr 1fr;padding-block:4.5rem}.hero-copy{padding:2rem}}
.drw{stroke:var(--ink);fill:none;stroke-width:1.6}
.drw-thin{stroke:var(--steel);fill:none;stroke-width:1}
.drw-fill{fill:var(--panel)}
.drw-copper{stroke:var(--copper);fill:none;stroke-width:2.4}
.drw-chill{stroke:var(--chill);fill:none;stroke-width:2.4}
.drw-text{fill:var(--steel);font-family:var(--f-mono);font-size:11px;letter-spacing:.06em}

/* sections */
section.block{padding-block:3.5rem}
section.block+section.block{border-top:1px solid var(--line)}
.head-row{display:grid;gap:.75rem;margin-bottom:2rem;max-width:44rem}
.head-row p{color:var(--steel);font-size:1.1rem}
.prose{max-width:42rem;display:grid;gap:1rem}
.prose ul{margin:0;padding-left:1.2rem;display:grid;gap:.4rem}

/* equipment schedule table */
.sched-wrap{overflow-x:auto;border:1.5px solid var(--ink);background:var(--panel)}
table.sched{border-collapse:collapse;width:100%;min-width:640px;font-size:.97rem}
.sched caption{caption-side:top;text-align:left;font-family:var(--f-mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;padding:.6rem .9rem;border-bottom:1.5px solid var(--ink);color:var(--ink)}
.sched th,.sched td{text-align:left;padding:.7rem .9rem;border-bottom:1px solid var(--line);vertical-align:top}
.sched thead th{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel);font-weight:500;border-bottom:1.5px solid var(--ink)}
.sched td:first-child{font-family:var(--f-mono);font-weight:500;color:var(--copper);white-space:nowrap}
.sched td a{font-weight:600}
.sched tr:last-child td{border-bottom:0}
.check{font-family:var(--f-mono);color:var(--ink);white-space:nowrap}

/* service cards */
.cards{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
@media (min-width:640px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (min-width:980px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{background:var(--panel);padding:1.5rem;display:grid;gap:.6rem;align-content:start;text-decoration:none;color:var(--ink);min-width:0}
.card p{color:var(--steel)}
.card .more{color:var(--copper);font-weight:700;font-family:var(--f-display);font-stretch:110%;font-size:.95rem}
a.card:hover h3{color:var(--copper)}

/* building types */
.chips{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0;margin:0}
.chips li{border:1px solid var(--line);background:var(--panel);padding:.45rem .8rem;border-radius:999px;font-weight:600;font-size:.95rem}

/* process */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:1px;background:var(--line);border:1px solid var(--line);counter-reset:s}
@media (min-width:860px){.steps{grid-template-columns:repeat(4,1fr)}}
.steps li{background:var(--panel);padding:1.4rem;display:grid;gap:.5rem;align-content:start;counter-increment:s}
.steps li::before{content:"STEP " counter(s,decimal-leading-zero);font-family:var(--f-mono);font-size:.75rem;letter-spacing:.1em;color:var(--copper)}
.steps p{color:var(--steel)}

/* split layout */
.split{display:grid;gap:2rem}
@media (min-width:900px){.split{grid-template-columns:1.2fr 1fr;align-items:start}}
.split>*{min-width:0}
.note{border:1.5px dashed var(--steel);padding:1.25rem;display:grid;gap:.5rem;background:var(--panel)}
.note .tag{color:var(--copper)}

/* scope list */
.scope{list-style:none;margin:0;padding:0;display:grid;gap:0;border-top:1px solid var(--line)}
.scope li{display:grid;grid-template-columns:auto 1fr;gap:.9rem;padding:.9rem 0;border-bottom:1px solid var(--line)}
.scope li::before{content:"";width:10px;height:10px;margin-top:.55rem;border:2px solid var(--copper);transform:rotate(45deg)}
.scope strong{display:block}
.scope span{color:var(--steel)}

/* FAQ */
.faq{display:grid;gap:0;border-top:1px solid var(--line);max-width:48rem}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:1.1rem 2rem 1.1rem 0;font-family:var(--f-display);font-stretch:105%;font-weight:700;font-size:1.12rem;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:.25rem;top:.9rem;font-family:var(--f-mono);font-size:1.4rem;color:var(--copper)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{padding:0 0 1.2rem;color:var(--steel);max-width:42rem}

/* areas */
.areas{columns:2;column-gap:2rem;list-style:none;padding:0;margin:0}
@media (min-width:700px){.areas{columns:3}}
.areas li{padding:.35rem 0;border-bottom:1px solid var(--line);break-inside:avoid}

/* CTA band */
.cta{background:var(--band);color:var(--band-ink)}
.cta .wrap{padding-block:3.25rem;display:grid;gap:1.25rem}
.cta p{color:var(--band-muted);max-width:40rem;font-size:1.1rem}
.cta .actions{display:flex;flex-wrap:wrap;gap:.75rem}
.cta .btn-line{border-color:var(--band-ink);color:var(--band-ink)}
.cta .btn-line:hover{background:var(--band-ink);color:var(--band)}
.cta .phone{font-family:var(--f-display);font-stretch:118%;font-weight:800;font-size:clamp(1.8rem,5vw,2.6rem);color:var(--band-ink);text-decoration:none;letter-spacing:.01em}
@media (min-width:900px){.cta .wrap{grid-template-columns:1.3fr 1fr;align-items:center}}

/* breadcrumb */
.crumbs{font-family:var(--f-mono);font-size:.76rem;letter-spacing:.06em;color:var(--steel)}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.4rem}
.crumbs li+li::before{content:"/";margin-right:.4rem}
.crumbs a{color:var(--steel)}

/* contact form */
.form{display:grid;gap:1rem;background:var(--panel);border:1.5px solid var(--ink);padding:1.5rem}
.form .row{display:grid;gap:1rem}
@media (min-width:640px){.form .row{grid-template-columns:1fr 1fr}}
.form label{display:grid;gap:.35rem;font-weight:600;font-size:.95rem}
.form input,.form select,.form textarea{font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--steel);border-radius:var(--radius);padding:.7rem .8rem;width:100%;min-width:0}
.form textarea{min-height:8rem;resize:vertical}
.form .hp{position:absolute;left:-9999px}
.form .status{font-weight:600;color:var(--chill)}
.contact-lines{display:grid;gap:1.25rem}
.contact-lines .big{font-family:var(--f-display);font-stretch:115%;font-weight:800;font-size:1.6rem;color:var(--ink);text-decoration:none;word-break:break-word}

/* footer */
.site-foot{border-top:1.5px solid var(--ink);background:var(--panel)}
.site-foot .wrap{padding-block:2.5rem;display:grid;gap:2rem}
@media (min-width:860px){.site-foot .wrap{grid-template-columns:1.4fr 1fr 1fr}}
.site-foot h2{font-size:.78rem;font-family:var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--steel);font-weight:500;margin-bottom:.75rem}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:.4rem}
.site-foot a{color:var(--ink)}
.site-foot p{color:var(--steel)}
.legal{border-top:1px solid var(--line);font-size:.85rem;color:var(--steel)}
.legal .wrap{padding-block:1rem}

/* phone call bar */
.callbar{position:fixed;left:0;right:0;bottom:0;z-index:30;display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px);padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px)}
.callbar a{display:flex;align-items:center;justify-content:center;padding:1rem .5rem;font-family:var(--f-display);font-stretch:110%;font-weight:700;text-decoration:none;background:var(--panel);color:var(--ink)}
.callbar a.primary{background:var(--copper);color:var(--copper-ink)}
@media (min-width:860px){.callbar{display:none}}

/* fixes */
.btn.head-call{display:none}
@media (min-width:1060px){.btn.head-call{display:inline-flex}}
.prose ul.chips{display:flex;padding:0}
.site-foot .legal .wrap{display:block}
@media (max-width:420px){.brand small{display:none}.brand span{font-size:.95rem}}