/* Stockton HVAC Expert — Slate & Green */
:root{--paper:#fbfbfa;--fog:#eceef0;--ink:#1c2127;--slate:#3d4a55;--slate-dk:#262e36;--slate-lt:#5d6a75;--copper:#1f5a36;--copper-dk:#164427;--line:#d5d9dd;--muted:#4d5862;
--serif:"Baskerville","Hoefler Text","Libre Baskerville","Big Caslon","Garamond",serif;--sans:"Seravek","Gill Sans Nova","Gill Sans","Gill Sans MT",Calibri,"Trebuchet MS",sans-serif}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.65 var(--sans)}
img{max-width:100%;height:auto;display:block}
a{color:var(--slate);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--copper-dk)}
:focus-visible{outline:3px solid var(--copper);outline-offset:2px}
h1,h2,h3{font-family:var(--serif);color:var(--slate-dk);line-height:1.2;font-weight:700}
h1{font-size:clamp(1.9rem,4.4vw,2.8rem);margin:.2rem 0 .8rem}
h2{font-size:clamp(1.45rem,3vw,1.9rem);margin:0 0 1rem}
h2::after{content:"";display:block;width:56px;height:3px;background:var(--copper);margin-top:.55rem}
.cta-band h2::after,.lead h2::after,.site-foot h2::after,.spec h2::after{display:none}
h3{font-size:1.2rem;margin:1.6rem 0 .5rem}
p,li{max-width:72ch}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:50}
/* header */
.site-head{background:var(--paper);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.head-row{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--slate-dk);font-family:var(--serif);font-size:1.2rem}
.brand b{color:var(--copper)}
.nav{display:flex;gap:18px;margin-left:auto}
.nav a{text-decoration:none;color:var(--ink);font-size:.98rem;padding:10px 2px}
.nav a:hover{color:var(--copper-dk)}
.head-phone{background:var(--copper);color:#fff;text-decoration:none;padding:10px 14px;border-radius:2px;font-weight:600;white-space:nowrap;min-height:44px;display:inline-flex;align-items:center;gap:6px}
.head-phone:hover{background:var(--copper-dk);color:#fff}
@media (max-width:860px){.nav{display:none}.head-phone{margin-left:auto}}
@media (max-width:420px){.brand span{font-size:1rem}.head-phone{padding:8px 10px;font-size:.92rem}}
/* buttons */
.btn-call{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap;background:var(--copper);color:#fff;text-decoration:none;padding:14px 20px;border-radius:2px;font-size:1.05rem;min-height:52px;border:1px solid var(--copper-dk)}
.btn-call:hover{background:var(--copper-dk);color:#fff}
.btn-call strong{font-weight:700;letter-spacing:.01em}
/* hero */
.hero{background:var(--fog);border-bottom:1px solid var(--line);padding:44px 0 0}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:40px;align-items:start}
.hero .sub{font-size:1.12rem;color:var(--muted);margin:0 0 1.3rem}
.trust{list-style:none;padding:0;margin:1.1rem 0 0;display:flex;flex-wrap:wrap;gap:8px 20px;color:var(--muted);font-size:.95rem}
.trust li::before{content:"— ";color:var(--copper)}
.spec{background:var(--paper);border:1px solid var(--line);border-top:4px solid var(--slate);padding:20px 22px}
.spec .tag{margin:0 0 .4rem}
.spec h2{font-size:1.2rem;margin:0 0 .8rem}
.spec dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:10px 16px;align-items:baseline}
.spec dt{font-family:var(--serif);font-size:1.6rem;color:var(--slate-dk);font-weight:700;white-space:nowrap}
.spec dd{margin:0;font-size:.95rem;color:var(--muted)}
.spec .src{font-size:.85rem;margin:.9rem 0 0;color:var(--muted)}
.hero-art{margin-top:36px}
.hero-art img{width:100%;max-height:340px;object-fit:cover;object-position:center 70%;border-top:1px solid var(--line)}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}}
/* page head */
.page-head{background:var(--fog);border-bottom:1px solid var(--line);padding:24px 0 30px}
.lede{font-size:1.12rem;color:var(--muted);max-width:68ch}
.head-cta{margin:1.2rem 0 0}
.crumbs ol{list-style:none;padding:0;margin:0 0 .6rem;display:flex;flex-wrap:wrap;gap:6px;font-size:.92rem;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--slate-lt)}
/* sections */
.sec{padding:48px 0;border-bottom:1px solid var(--line)}
.sec.alt{background:var(--fog)}
.tag{font-family:var(--sans);text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;color:var(--slate-lt);margin:0 0 .3rem;font-weight:600}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:860px){.grid2,.grid3{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:2px;padding:0 20px 18px}
.card .tab{display:inline-block;background:var(--slate);color:#fff;font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;padding:4px 10px;margin:0 0 .6rem;font-weight:600}
.card h3{margin-top:.2rem}
.card p{margin:.4rem 0}
.sys-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.sys-list a{display:block;border:1px solid var(--line);border-left:4px solid var(--slate);background:var(--paper);padding:14px 16px;text-decoration:none;color:var(--ink);min-height:48px}
.sys-list a:hover{border-left-color:var(--copper)}
.sys-list b{display:block;font-family:var(--serif);color:var(--slate-dk);font-size:1.08rem}
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:14px}
.steps li{counter-increment:s;position:relative;padding:4px 0 4px 56px;max-width:none}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:40px;height:40px;border:2px solid var(--slate);color:var(--slate);font-family:var(--serif);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:1.15rem}
.note{border-left:4px solid var(--copper);background:var(--fog);padding:12px 16px;margin:1.2rem 0}
.checks{padding-left:1.2rem}.checks li{margin:.35rem 0}
.fig{margin:1rem 0}
.fig img{border:1px solid var(--line)}
/* tables */
.tbl-wrap{overflow-x:auto;margin:1.2rem 0}
table{border-collapse:collapse;width:100%;font-size:.95rem;background:var(--paper)}
caption{text-align:left;font-family:var(--serif);font-weight:700;color:var(--slate-dk);padding:0 0 .5rem;font-size:1.05rem}
th,td{border:1px solid var(--line);padding:10px 12px;vertical-align:top;text-align:left}
thead th{background:var(--slate);color:#fff;font-weight:600}
tbody th{background:var(--fog);font-weight:600}
/* faq */
.qa h3{margin-top:1.3rem}
/* cta band */
.cta-band{background:var(--slate-dk);color:#e9ecee;padding:44px 0}
.cta-band h2{color:#fff}
.cta-band p{color:#d3d8dc}
.cta-band a{color:#fff}
.cta-band .btn-call{margin:.4rem 0 .6rem}
.cta-alt{font-size:.98rem}
.disc{font-size:.95rem;border-top:1px solid #46525c;padding-top:12px;margin-top:16px;color:#d3d8dc}
/* footer */
.site-foot{background:#1e252c;color:#cdd3d8;padding:40px 0 90px;font-size:.95rem}
.site-foot a{color:#e8ebee}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
.foot-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:1.15rem;color:#fff}
.foot-h{font-family:var(--sans);font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:#aeb7be;margin:0 0 .6rem}
.site-foot ul{list-style:none;padding:0;margin:0}.site-foot li{margin:.35rem 0}
.foot-phone{font-size:1.15rem;font-weight:700}
.foot-note{border-top:1px solid #3a444d;margin-top:26px;padding-top:16px;font-size:.88rem;color:#aeb7be}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
/* sticky */
.sticky-call{display:none}
@media (max-width:760px){.sticky-call{display:block;position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--paper);border-top:1px solid var(--line);padding:8px 12px}
.sticky-call a{display:flex;justify-content:center;align-items:center;gap:8px;min-height:50px;background:var(--copper);color:#fff;text-decoration:none;font-weight:700;border-radius:2px}
body{padding-bottom:70px}}
.updated{font-size:.92rem;color:var(--muted)}