:root{--red:#c41230;--red-dark:#9c0e25;--char:#2e2a26;--brick:#b5713f;--paper:#faf7f2;--card:#fffdf9;--line:#e6dfd3;--muted:#57514a}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;padding-top:30px;font-family:"Source Sans 3","Source Sans Pro",system-ui,sans-serif;font-size:1.0625rem;line-height:1.65;color:var(--char);background-color:var(--paper);background-image:radial-gradient(rgba(46,42,38,.045) 1px,transparent 1px),radial-gradient(rgba(181,113,63,.05) 1px,transparent 1px);background-size:22px 22px,37px 37px;background-position:0 0,11px 17px}
h1,h2,h3{font-family:Fraunces,"Playfair Display",Georgia,serif;line-height:1.2;color:var(--char);margin:0 0 .6em}
h1{font-size:clamp(2rem,5vw,3.2rem)}
h2{font-size:clamp(1.5rem,3vw,2rem)}
h3{font-size:1.25rem}
a{color:var(--red-dark)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--brick);outline-offset:2px}
img{max-width:100%;height:auto;display:block}

/* proposal banner + watermark */
.proposal-banner{position:fixed;top:0;left:0;right:0;z-index:10000;height:30px;line-height:30px;background:#111;color:#f2f2f2;font:600 12px/30px Arial,Helvetica,sans-serif;text-align:center;letter-spacing:.03em;padding:0 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.watermark{position:fixed;inset:0;z-index:9000;pointer-events:none;overflow:hidden}
.watermark span{position:absolute;left:50%;font:900 clamp(5rem,16vw,11rem)/1 Arial Black,Arial,Helvetica,sans-serif;color:#777;opacity:.06;transform:translateX(-50%) rotate(-30deg);white-space:nowrap;letter-spacing:.08em}
.watermark span:nth-child(1){top:4%}
.watermark span:nth-child(2){top:42%}
.watermark span:nth-child(3){top:80%}

/* header */
.site-header{position:sticky;top:30px;z-index:100;background:var(--card);border-bottom:3px solid var(--red);box-shadow:0 2px 10px rgba(46,42,38,.08)}
.header-in{max-width:1080px;margin:0 auto;padding:.5rem 1rem;display:flex;align-items:center;gap:1rem;flex-wrap:wrap}
.logo img{height:48px;width:auto}
.nav{display:flex;gap:.25rem;margin-left:auto;flex-wrap:wrap}
.nav a{text-decoration:none;color:var(--char);font-weight:600;padding:.45rem .8rem;border-radius:999px}
.nav a:hover{background:var(--paper)}
.nav a[aria-current=page]{background:var(--char);color:#fff}
.call{background:var(--red);color:#fff;text-decoration:none;font-weight:700;padding:.5rem 1rem;border-radius:999px;white-space:nowrap}
.call:hover{background:var(--red-dark)}

/* hero */
.hero{position:relative;color:#fff;text-align:center;padding:5.5rem 1rem;background:linear-gradient(rgba(30,26,23,.72),rgba(30,26,23,.78)),url("https://proheatservicesltd.co.uk/wp-content/uploads/2020/12/Domestic.jpg") center/cover;background-color:var(--char)}
.hero.sub{padding:3.5rem 1rem}
.hero h1{color:#fff;max-width:20ch;margin:0 auto .5em}
.hero p{max-width:40rem;margin:0 auto 1.5rem;font-size:1.15rem}
.btn{display:inline-block;background:var(--red);color:#fff;text-decoration:none;font-weight:700;padding:.75rem 1.5rem;border-radius:12px;border:0;font-size:1rem;cursor:pointer;font-family:inherit}
.btn:hover{background:var(--red-dark)}
.btn.alt{background:#fff;color:var(--char);margin-left:.5rem}
.btn.alt:hover{background:var(--paper)}

/* content */
.col{max-width:720px;margin:0 auto;padding:3rem 1rem}
.col.wide{max-width:960px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:1.5rem;box-shadow:0 4px 18px rgba(46,42,38,.05)}
.lede{font-size:1.2rem}
.rule{width:56px;height:4px;border-radius:4px;background:var(--brick);margin:0 0 1.2rem}
.services-list{list-style:none;counter-reset:s;margin:0;padding:0}
.services-list>li{counter-increment:s;display:grid;grid-template-columns:3rem 1fr;gap:1rem;margin-bottom:2.5rem}
.services-list>li::before{content:counter(s);font:700 1.6rem/3rem Fraunces,Georgia,serif;width:3rem;height:3rem;text-align:center;border-radius:50%;background:var(--red);color:#fff}
.services-list img{border-radius:14px;margin:0 0 1rem;width:100%;max-height:300px;object-fit:cover}
.accred{display:grid;gap:1rem}
.accred-item{display:flex;align-items:center;gap:1rem;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:.8rem 1rem}
.accred-item .badge{width:110px;height:70px;display:flex;align-items:center;justify-content:center;background:var(--char);border-radius:10px;padding:6px;flex:none}
.accred-item .badge img{max-height:58px;width:auto;object-fit:contain}
.accred-item strong{font-size:1.1rem}
.cta{background:var(--char);color:#fff;text-align:center;padding:3rem 1rem}
.cta h2{color:#fff}
.cta a{color:#fff}

/* form */
form .row{margin-bottom:1.1rem}
label{display:block;font-weight:600;margin-bottom:.3rem}
input,textarea{width:100%;font:inherit;color:var(--char);background:#fff;border:2px solid #9a9187;border-radius:10px;padding:.65rem .8rem}
textarea{min-height:150px;resize:vertical}
.err{color:#a30f27;font-size:.95rem;margin:.3rem 0 0;min-height:1.2em}
input[aria-invalid=true],textarea[aria-invalid=true]{border-color:#a30f27}
.status{margin-top:1rem;padding:1rem;border-radius:10px;background:#fff;border:2px solid var(--brick)}
.status[hidden]{display:none}
dl.details{margin:0}
dl.details dt{font-weight:700;margin-top:.8rem}
dl.details dd{margin:0}

footer{background:#1d1a17;color:#e9e4dc;padding:2rem 1rem;font-size:.97rem}
.foot-in{max-width:1080px;margin:0 auto;display:grid;gap:1rem}
footer a{color:#fff}
footer .proposal{border-top:1px solid #4a443d;padding-top:1rem;margin:0}
footer nav{display:flex;gap:1rem;flex-wrap:wrap}

@media(max-width:700px){
.header-in{gap:.5rem}
.logo img{height:40px}
.call{margin-left:auto;padding:.45rem .9rem}
.nav{order:3;width:100%;margin:0;justify-content:space-between}
.nav a{padding:.4rem .6rem}
.hero{padding:3.5rem 1rem}
.services-list>li{grid-template-columns:1fr}
.btn.alt{margin:.5rem 0 0}
.accred-item{flex-wrap:wrap}
}