:root{
  --ground:#F4EFE5;
  --ground-2:#EBE4D5;
  --paper:#FBF8F1;
  --ink:#141719;
  --ink-2:#2A2F33;
  --slate:#6B7378;
  --rule:#D9D0BE;
  --petrol:#0E3440;
  --petrol-2:#0A2530;
  --copper:#C56A2C;
  --copper-2:#A45420;
  --flame:#E48A3A;
  --good:#3F6D4E;

  --f-display:"Fraunces","Iowan Old Style","Palatino",Georgia,serif;
  --f-body:"IBM Plex Sans","Helvetica Neue",Arial,sans-serif;
  --f-mono:"IBM Plex Mono","SF Mono",Menlo,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --ground:#0C1518;
    --ground-2:#122024;
    --paper:#0F1B1F;
    --ink:#EDE6D6;
    --ink-2:#C7BFAE;
    --slate:#8B9298;
    --rule:#233238;
    --petrol:#DDE7EA;
    --petrol-2:#B7C6CB;
    --copper:#E48A3A;
    --copper-2:#C56A2C;
    --flame:#F0A25A;
    --good:#7BB48A;
  }
}
:root[data-theme="dark"]{
  --ground:#0C1518;
  --ground-2:#122024;
  --paper:#0F1B1F;
  --ink:#EDE6D6;
  --ink-2:#C7BFAE;
  --slate:#8B9298;
  --rule:#233238;
  --petrol:#DDE7EA;
  --petrol-2:#B7C6CB;
  --copper:#E48A3A;
  --copper-2:#C56A2C;
  --flame:#F0A25A;
  --good:#7BB48A;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ground);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit}
img,svg{max-width:100%;display:block}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:500;letter-spacing:-0.01em;margin:0;text-wrap:balance}
p{margin:0}
button{font:inherit}

.wrap{width:100%;max-width:1200px;margin-inline:auto;padding-inline:24px}

/* ── Status bar ────────────────────────────────────────── */
.status{
  background:var(--petrol);
  color:var(--paper);
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:0.02em;
}
[data-theme="dark"] .status, :root:not([data-theme="light"]) .status{ background:var(--ground-2); color:var(--ink); }
@media (prefers-color-scheme: light){ .status{ background:var(--petrol); color:var(--paper); } }
.status-row{
  display:flex;flex-wrap:wrap;gap:8px 24px;align-items:center;
  padding-block:8px;
}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--flame);display:inline-block;margin-right:6px;box-shadow:0 0 0 3px rgba(228,138,58,.18)}
.status-item{opacity:.9}
.status-item strong{font-weight:500}
.status-cta{margin-left:auto;font-weight:500;text-decoration:none;color:inherit}

/* ── Nav ───────────────────────────────────────────────── */
.nav{
  padding-block:20px;
  border-bottom:1px solid var(--rule);
}
.nav-row{display:flex;align-items:center;gap:32px}
.brand{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink)}
.brand-mark{
  font-family:var(--f-display);
  font-weight:600;
  font-size:22px;
  letter-spacing:-0.02em;
}
.brand-mark em{font-style:italic;color:var(--copper);font-weight:500}
.brand-sub{
  font-family:var(--f-mono);font-size:11px;color:var(--slate);
  text-transform:uppercase;letter-spacing:.1em;
}
.nav-links{display:flex;gap:24px;margin-left:auto;flex-wrap:wrap}
.nav-links a{
  text-decoration:none;font-size:14px;color:var(--ink-2);
  padding-block:6px;border-bottom:1px solid transparent;
  transition:border-color .15s;
}
.nav-links a:hover{border-color:var(--copper)}
.nav-links a.active{border-color:var(--copper);color:var(--ink)}
.nav-cta{
  margin-left:8px;
  background:var(--copper);
  color:#fff;
  padding:10px 16px;
  border-radius:2px;
  text-decoration:none;
  font-weight:500;
  font-size:14px;
  letter-spacing:.01em;
  transition:background .15s;
}
.nav-cta:hover{background:var(--copper-2)}
@media (max-width:900px){
  .nav-links{display:none}
}

/* ── Hero ──────────────────────────────────────────────── */
.hero{
  padding-block:72px 88px;
  border-bottom:1px solid var(--rule);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
}
@media (max-width:900px){
  .hero{padding-block:48px 56px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
}
.eyebrow{
  font-family:var(--f-mono);
  font-size:12px;
  text-transform:uppercase;
  letter-spacing:.14em;
  color:var(--copper);
  margin-bottom:20px;
  display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--copper)}
.hero h1{
  font-size:clamp(38px,5.6vw,68px);
  line-height:1.02;
  font-weight:500;
  letter-spacing:-0.025em;
}
.hero h1 em{
  font-style:italic;
  font-weight:400;
  color:var(--copper);
}
.hero-lede{
  margin-top:24px;
  font-size:18px;
  line-height:1.55;
  color:var(--ink-2);
  max-width:52ch;
}
.hero-ctas{
  margin-top:36px;
  display:flex;
  gap:14px;
  align-items:center;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 22px;
  border-radius:2px;
  font-weight:500;font-size:15px;
  text-decoration:none;
  transition:transform .12s ease, background .15s;
}
.btn-primary{
  background:var(--petrol);color:var(--paper);
}
[data-theme="dark"] .btn-primary, :root:not([data-theme="light"]) .btn-primary{
  background:var(--copper);color:#fff;
}
@media (prefers-color-scheme: light){ .btn-primary{ background:var(--petrol); color:var(--paper);} }
.btn-primary:hover{transform:translateY(-1px)}
.btn-ghost{
  background:transparent;color:var(--ink);
  border:1px solid var(--rule);
}
.btn-ghost:hover{border-color:var(--ink)}
.btn .num{font-family:var(--f-mono);font-weight:400;letter-spacing:.02em}

.hero-trust{
  margin-top:44px;
  display:flex;flex-wrap:wrap;gap:28px 40px;
  padding-top:28px;
  border-top:1px solid var(--rule);
}
.trust{display:flex;flex-direction:column;gap:2px}
.trust-k{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--slate)}
.trust-v{font-family:var(--f-display);font-size:22px;font-weight:500;letter-spacing:-0.01em}
.trust-v small{font-family:var(--f-body);font-size:13px;color:var(--slate);font-weight:400;margin-left:6px}

/* Boiler illustration wrapper */
.gauge-wrap{
  position:relative;
  aspect-ratio:4/5;
  max-width:400px;
  margin-inline:auto;
  background:linear-gradient(180deg, var(--ground-2) 0%, var(--ground) 100%);
  border:1px solid var(--rule);
  border-radius:4px;
  padding:32px 28px 40px;
}
.gauge-wrap::before{
  content:"WORCESTER · GREENSTAR 30i";
  position:absolute;top:16px;left:20px;
  font-family:var(--f-mono);font-size:10px;letter-spacing:.16em;
  color:var(--slate);
}
.gauge-wrap::after{
  content:"WALL-HUNG · COMBI · NG";
  position:absolute;bottom:16px;right:20px;
  font-family:var(--f-mono);font-size:10px;letter-spacing:.16em;
  color:var(--slate);
}

/* ── Section ───────────────────────────────────────────── */
section{padding-block:80px;border-bottom:1px solid var(--rule)}
@media (max-width:760px){ section{padding-block:56px} }
.sec-head{
  display:grid;
  grid-template-columns:1fr 1.4fr;
  gap:40px;
  align-items:end;
  margin-bottom:44px;
}
@media (max-width:760px){ .sec-head{grid-template-columns:1fr;gap:16px;margin-bottom:32px} }
.sec-title{font-size:clamp(30px,3.6vw,44px);line-height:1.05;letter-spacing:-0.02em}
.sec-title em{font-style:italic;color:var(--copper);font-weight:400}
.sec-kicker{
  font-family:var(--f-mono);font-size:12px;
  text-transform:uppercase;letter-spacing:.14em;
  color:var(--slate);margin-bottom:14px;
}
.sec-intro{font-size:17px;color:var(--ink-2);max-width:56ch;line-height:1.6}

/* ── Prose ─────────────────────────────────────────────── */
.prose{max-width:70ch}
.prose p{
  font-size:17px;line-height:1.75;color:var(--ink-2);
  margin-bottom:20px;
}
.prose p:last-child{margin-bottom:0}
.prose h3{
  font-size:24px;font-weight:500;color:var(--ink);
  margin-top:36px;margin-bottom:14px;letter-spacing:-0.01em;
}
.prose h4{
  font-family:var(--f-mono);font-size:12px;text-transform:uppercase;letter-spacing:.14em;
  color:var(--copper);margin-top:28px;margin-bottom:10px;
}
.prose ul{
  padding-left:0;list-style:none;margin:0 0 20px 0;
}
.prose ul li{
  font-size:16px;line-height:1.7;color:var(--ink-2);
  padding-left:22px;position:relative;margin-bottom:8px;
}
.prose ul li::before{
  content:"";position:absolute;left:0;top:12px;
  width:10px;height:1px;background:var(--copper);
}
.prose strong{color:var(--ink);font-weight:600}
.prose a{color:var(--copper);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
.prose a:hover{color:var(--copper-2)}

.two-col{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
}
@media (max-width:900px){ .two-col{grid-template-columns:1fr;gap:32px} }

/* ── Services grid ────────────────────────────────────── */
.services{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
@media (max-width:760px){ .services{grid-template-columns:1fr} }
.svc{
  background:var(--paper);
  padding:36px 32px;
  display:flex;flex-direction:column;gap:16px;
  position:relative;
  min-height:280px;
  text-decoration:none;
  color:inherit;
  transition:background .15s;
}
.svc:hover{background:var(--ground-2)}
.svc-idx{
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--slate);
}
.svc h3{font-size:26px;font-weight:500;letter-spacing:-0.015em}
.svc-desc{color:var(--ink-2);font-size:15px;line-height:1.6;flex:1}
.svc-price{
  display:flex;align-items:baseline;gap:10px;
  padding-top:16px;
  border-top:1px dashed var(--rule);
}
.svc-price .from{font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate)}
.svc-price .amt{font-family:var(--f-display);font-size:28px;font-weight:500;color:var(--petrol)}
[data-theme="dark"] .svc-price .amt, :root:not([data-theme="light"]) .svc-price .amt{ color:var(--copper) }
@media (prefers-color-scheme: light){ .svc-price .amt{ color:var(--petrol) } }
.svc-price .amt small{font-size:14px;color:var(--slate);font-family:var(--f-body);font-weight:400;margin-left:4px}
.svc-tag{
  position:absolute;top:32px;right:32px;
  font-family:var(--f-mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--copper);
  padding:4px 8px;border:1px solid var(--copper);border-radius:2px;
}

/* ── Coverage ─────────────────────────────────────────── */
.coverage{background:var(--ground-2)}
.coverage-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}
@media (max-width:820px){ .coverage-grid{grid-template-columns:1fr;gap:32px} }
.postcodes{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
.pc{
  background:var(--paper);
  padding:20px 18px;
  display:flex;flex-direction:column;gap:2px;
  text-decoration:none;color:inherit;
  transition:background .15s;
}
.pc:hover{background:var(--ground-2)}
.pc-code{
  font-family:var(--f-mono);
  font-size:20px;font-weight:500;
  letter-spacing:.02em;
  color:var(--petrol);
}
[data-theme="dark"] .pc-code, :root:not([data-theme="light"]) .pc-code{ color:var(--copper) }
@media (prefers-color-scheme: light){ .pc-code{ color:var(--petrol) } }
.pc-area{font-size:13px;color:var(--slate)}

.cov-copy h3{font-size:28px;font-weight:500;letter-spacing:-0.015em;margin-bottom:16px}
.cov-copy p{color:var(--ink-2);font-size:16px;line-height:1.65;margin-bottom:14px}
.cov-note{
  margin-top:24px;
  padding:16px 18px;
  background:var(--paper);
  border-left:2px solid var(--copper);
  font-size:14px;color:var(--ink-2);
  font-family:var(--f-mono);
  line-height:1.5;
}

/* ── Process ──────────────────────────────────────────── */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:40px;
}
@media (max-width:820px){ .steps{grid-template-columns:1fr;gap:32px} }
.step{position:relative;padding-top:24px;border-top:2px solid var(--petrol)}
[data-theme="dark"] .step, :root:not([data-theme="light"]) .step{ border-top-color:var(--copper) }
@media (prefers-color-scheme: light){ .step{ border-top-color:var(--petrol) } }
.step-n{
  font-family:var(--f-mono);
  font-size:11px;letter-spacing:.14em;
  color:var(--slate);margin-bottom:12px;
}
.step h3{font-size:22px;font-weight:500;margin-bottom:10px;letter-spacing:-0.01em}
.step p{color:var(--ink-2);font-size:15px;line-height:1.6}

/* ── Testimonials ─────────────────────────────────────── */
.testimonials{background:var(--ground-2)}
.quotes{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
@media (max-width:820px){ .quotes{grid-template-columns:1fr} }
.quote{
  background:var(--paper);
  padding:32px 28px;
  display:flex;flex-direction:column;gap:20px;
}
.quote-text{
  font-family:var(--f-display);
  font-size:19px;line-height:1.45;
  font-weight:400;
  color:var(--ink);
  letter-spacing:-0.005em;
}
.quote-meta{
  display:flex;justify-content:space-between;align-items:baseline;
  padding-top:16px;border-top:1px solid var(--rule);
  font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--slate);
}
.quote-name{color:var(--ink-2)}
.stars{
  color:var(--copper);letter-spacing:2px;font-size:12px;
  font-family:var(--f-body);
}

/* ── FAQ ──────────────────────────────────────────────── */
.faq-list{display:flex;flex-direction:column;border-top:1px solid var(--rule)}
.faq{
  border-bottom:1px solid var(--rule);
  padding:0;
}
.faq summary{
  list-style:none;
  padding:24px 0;
  display:grid;
  grid-template-columns:1fr auto;
  align-items:center;
  gap:24px;
  cursor:pointer;
  font-family:var(--f-display);
  font-size:20px;font-weight:500;letter-spacing:-0.01em;
}
.faq summary::-webkit-details-marker{display:none}
.faq-sign{
  font-family:var(--f-mono);font-size:20px;color:var(--copper);
  transition:transform .2s;
  line-height:1;
}
.faq[open] .faq-sign{transform:rotate(45deg)}
.faq-body{
  padding:0 0 24px 0;
  color:var(--ink-2);
  font-size:16px;line-height:1.65;
  max-width:70ch;
}

/* ── Price table ──────────────────────────────────────── */
.price-table{
  width:100%;border-collapse:collapse;
  background:var(--paper);
  border:1px solid var(--rule);
  font-size:15px;
}
.price-table th, .price-table td{
  padding:16px 20px;text-align:left;
  border-bottom:1px solid var(--rule);
  vertical-align:top;
}
.price-table th{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--slate);font-weight:500;
  background:var(--ground-2);
}
.price-table td strong{color:var(--ink);font-weight:600}
.price-table td .amt{
  font-family:var(--f-display);font-size:20px;font-weight:500;
  color:var(--copper);
}
.price-table tbody tr:last-child td{border-bottom:none}
.price-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ── CTA band ─────────────────────────────────────────── */
.cta-band{
  background:var(--petrol);
  color:var(--paper);
  border-bottom:none;
}
[data-theme="dark"] .cta-band, :root:not([data-theme="light"]) .cta-band{ background:var(--ground-2); color:var(--ink) }
@media (prefers-color-scheme: light){ .cta-band{ background:var(--petrol); color:var(--paper) } }
.cta-band .wrap{
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:40px;
  align-items:center;
}
@media (max-width:820px){ .cta-band .wrap{grid-template-columns:1fr;gap:24px} }
.cta-band h2{
  font-size:clamp(30px,3.6vw,42px);
  line-height:1.05;
  letter-spacing:-0.02em;
}
.cta-band h2 em{font-style:italic;color:var(--flame);font-weight:400}
.cta-band-info{display:flex;flex-direction:column;gap:16px}
.phone-big{
  font-family:var(--f-mono);
  font-size:clamp(24px,3vw,32px);
  color:var(--paper);
  text-decoration:none;
  letter-spacing:.02em;
  border-bottom:1px solid rgba(255,255,255,.3);
  padding-bottom:8px;
  display:inline-block;
  width:fit-content;
}
[data-theme="dark"] .phone-big, :root:not([data-theme="light"]) .phone-big{ color:var(--ink); border-color:var(--rule) }
@media (prefers-color-scheme: light){ .phone-big{ color:var(--paper); border-color:rgba(255,255,255,.3) } }
.hours{
  font-family:var(--f-mono);
  font-size:13px;
  opacity:.75;
  letter-spacing:.02em;
  line-height:1.7;
}

/* ── Footer ───────────────────────────────────────────── */
footer{
  padding-block:56px 32px;
  background:var(--ground);
  color:var(--ink-2);
}
.foot{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr;
  gap:40px;
  margin-bottom:40px;
}
@media (max-width:760px){ .foot{grid-template-columns:1fr 1fr;gap:32px} }
.foot h4{
  font-family:var(--f-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--slate);
  margin-bottom:14px;
  font-weight:500;
}
.foot a{text-decoration:none;color:var(--ink-2);display:block;padding-block:4px;font-size:14px}
.foot a:hover{color:var(--copper)}
.foot-brand p{font-size:14px;line-height:1.6;margin-top:12px;max-width:38ch}
.foot-bottom{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:28px;
  border-top:1px solid var(--rule);
  font-family:var(--f-mono);font-size:11px;letter-spacing:.08em;
  color:var(--slate);text-transform:uppercase;
  flex-wrap:wrap;gap:16px;
}

/* ── Page hero (secondary pages) ──────────────────────── */
.page-hero{
  padding-block:64px 56px;
  border-bottom:1px solid var(--rule);
}
.page-hero h1{
  font-size:clamp(34px,5vw,60px);
  line-height:1.05;
  font-weight:500;
  letter-spacing:-0.025em;
  max-width:20ch;
}
.page-hero h1 em{font-style:italic;color:var(--copper);font-weight:400}
.page-hero .hero-lede{max-width:60ch;margin-top:20px}

/* Breadcrumbs */
.crumbs{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--slate);margin-bottom:24px;
  display:flex;gap:8px;align-items:center;flex-wrap:wrap;
}
.crumbs a{color:var(--slate);text-decoration:none;border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--copper);border-bottom-color:var(--copper)}
.crumbs span{opacity:.5}

/* Related pages / see-also */
.related{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
  margin-top:32px;
}
@media (max-width:820px){ .related{grid-template-columns:1fr} }
.related a{
  background:var(--paper);
  padding:28px 26px;
  text-decoration:none;color:inherit;
  display:flex;flex-direction:column;gap:8px;
  transition:background .15s;
}
.related a:hover{background:var(--ground-2)}
.related-k{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--copper)}
.related h3{font-size:20px;font-weight:500;letter-spacing:-0.01em}
.related p{color:var(--ink-2);font-size:14px;line-height:1.55}

/* Callout box */
.callout{
  background:var(--paper);
  border-left:3px solid var(--copper);
  padding:24px 28px;
  margin:28px 0;
}
.callout h4{
  font-family:var(--f-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--copper);margin-bottom:10px;
}
.callout p{color:var(--ink-2);font-size:16px;line-height:1.65}

/* Area / brand card grid */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
@media (max-width:820px){ .card-grid{grid-template-columns:1fr 1fr} }
@media (max-width:520px){ .card-grid{grid-template-columns:1fr} }
.card{
  background:var(--paper);
  padding:28px 24px;
  display:flex;flex-direction:column;gap:10px;
}
.card-k{font-family:var(--f-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--slate)}
.card h3{font-size:20px;font-weight:500;letter-spacing:-0.01em}
.card p{color:var(--ink-2);font-size:14px;line-height:1.6}

/* keyboard focus */
a:focus-visible, button:focus-visible, summary:focus-visible{
  outline:2px solid var(--copper);outline-offset:3px;border-radius:2px;
}

@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important}
}