:root{
  --bg:#ffffff;
  --text:#0b1220;
  --muted:#5b6577;
  --border:rgba(15,23,42,.12);
  --shadow:0 18px 40px rgba(15,23,42,.10);
  --shadow2:0 2px 14px rgba(15,23,42,.06);

  --radius:18px;
  --radius2:26px;

  --container:1120px;

  --primary:#0b1220;
  --primaryHover:#0f1a33;

  --grad: radial-gradient(1100px 520px at 12% 15%, rgba(34,197,94,.18), transparent 55%),
          radial-gradient(900px 520px at 85% 18%, rgba(56,189,248,.18), transparent 55%),
          radial-gradient(720px 520px at 48% 90%, rgba(168,85,247,.12), transparent 55%);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text);
  background:var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  line-height:1.5;
}

img{max-width:100%; height:auto; display:block}
a{color:inherit; text-decoration:none}
a:hover{opacity:.92}

.container{
  width:min(100% - 32px, var(--container));
  margin-inline:auto;
}

.small{font-size:13px}
.muted{color:var(--muted)}

.header{
  position:sticky; top:0; z-index:50;
  border-bottom:1px solid var(--border);
  background:rgba(255,255,255,.78);
  backdrop-filter: blur(10px);
}
.header__inner{
  height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
}

.brand{
  display:flex; align-items:center; gap:12px;
  min-width: 220px;
}
.brand__logo{
  width: 140px;
  height: auto;
}
.brand__meta{display:flex; flex-direction:column; line-height:1.2}
.brand__name{font-weight:800; letter-spacing:-.2px}
.brand__tag{font-size:12px; color:var(--muted)}

.nav{
  display:none;
  gap:18px;
  font-size:14px;
  color:var(--muted);
}
.nav a{
  padding:10px 10px;
  border-radius:14px;
}
.nav a[aria-current="page"]{
  background:rgba(15,23,42,.05);
  color:var(--text);
}
.nav a:hover{
  background:rgba(15,23,42,.04);
  color:var(--text);
}

.header__actions{display:flex; align-items:center; gap:10px}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  padding:11px 16px;
  font-weight:700;
  font-size:14px;
  border:1px solid var(--border);
  cursor:pointer;
  white-space:nowrap;
}
.btn--primary{
  background:var(--primary);
  color:#fff;
  border-color:rgba(0,0,0,.16);
  box-shadow:0 12px 26px rgba(0,0,0,.16);
}
.btn--primary:hover{background:var(--primaryHover)}
.btn--secondary{
  background:#fff;
  color:var(--text);
  box-shadow:var(--shadow2);
}
.btn--ghost{
  background:transparent;
  color:var(--text);
}
.iconbtn{
  width:46px; height:46px;
  border-radius:16px;
  border:1px solid var(--border);
  background:#fff;
  box-shadow:var(--shadow2);
  display:grid; place-items:center;
}
.iconbtn__bars{width:18px; height:12px; position:relative}
.iconbtn__bars::before,
.iconbtn__bars::after{
  content:"";
  position:absolute;
  left:0; right:0;
  height:2px;
  background:var(--text);
  border-radius:2px;
}
.iconbtn__bars::before{top:0}
.iconbtn__bars::after{bottom:0}

.mobile{
  border-top:1px solid var(--border);
  background:rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
}
.mobile__inner{
  display:grid;
  gap:10px;
  padding:14px 0 18px;
}
.mobile__inner a{
  padding:12px 12px;
  border-radius:16px;
  border:1px solid var(--border);
  background:#fff;
  box-shadow:var(--shadow2);
}

.hero{
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(rgba(255,255,255,0.85), rgba(255,255,255,0.95)),
    url("https://phcrenewables.co.uk/image/discovering_the_latest_heating_technologies.png");
  background-size: cover;
  background-position: center;
}
.hero__fade{
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(255,255,255,.25), rgba(255,255,255,.92));
  pointer-events:none;
}
.hero__grid{
  position:relative;
  padding:70px 0;
  display:grid;
  gap:22px;
  align-items:center;
}
.pill{
  display:inline-flex;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.65);
  box-shadow:var(--shadow2);
  font-size:13px;
  color:var(--muted);
}
h1{
  margin:12px 0 10px;
  font-size: clamp(34px, 4.1vw, 56px);
  line-height:1.02;
  letter-spacing:-.9px;
}
.lead{
  margin:0;
  font-size:18px;
  color:var(--muted);
  max-width: 62ch;
}

.hero__cta{display:flex; flex-wrap:wrap; gap:10px; margin-top:22px}

.panel{
  border-radius:var(--radius2);
  border:1px solid var(--border);
  background:rgba(255,255,255,.78);
  box-shadow:var(--shadow);
  padding:22px;
}
.panel h2{margin:0 0 6px; letter-spacing:-.35px}
.panel__cards{display:grid; gap:10px; margin-top:14px}
.mini{
  border-radius:18px;
  border:1px solid var(--border);
  background:#fff;
  box-shadow:var(--shadow2);
  padding:14px;
  display:grid;
  gap:2px;
}
.mini__title{font-weight:750}
.mini__desc{font-size:13px; color:var(--muted)}

.section{padding:64px 0}
.section--alt{
  background:linear-gradient(180deg, rgba(15,23,42,.02), rgba(15,23,42,0));
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.section__head{max-width:760px; margin-bottom:22px}
.eyebrow{
  margin:0;
  font-size:13px;
  color:var(--muted);
  font-weight:700;
  letter-spacing:.2px;
}
h2{
  margin:10px 0 8px;
  font-size: clamp(26px, 2.6vw, 38px);
  letter-spacing:-.6px;
  line-height:1.1;
}

.grid2, .grid3{
  display:grid;
  gap:12px;
}

.card{
  border-radius:var(--radius2);
  border:1px solid var(--border);
  background:#fff;
  box-shadow:var(--shadow2);
  padding:20px;
}
.card--featured{
  background:linear-gradient(180deg, rgba(255,255,255,1), rgba(255,255,255,.78));
}
.card h3{margin:0 0 8px; letter-spacing:-.25px}
.card p{margin:0; color:var(--muted)}

.media{
  border-radius:var(--radius2);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow2);
  background:#fff;
}
.media img{width:100%; height:100%; object-fit:cover}

.badge{
  display:inline-flex;
  padding:6px 10px;
  border-radius:999px;
  font-size:12px;
  border:1px solid var(--border);
  background:rgba(15,23,42,.03);
  margin-bottom:10px;
}

.list{margin:12px 0 0; padding-left:18px; color:var(--muted)}
.list li{margin:6px 0}

.callout{
  display:flex; flex-wrap:wrap;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  padding:18px;
  border-radius:var(--radius2);
  border:1px solid var(--border);
  background:rgba(255,255,255,.78);
  box-shadow:var(--shadow2);
}

.form label{
  display:grid;
  gap:6px;
  font-size:13px;
  color:var(--muted);
}
input, select, textarea{
  width:100%;
  border-radius:14px;
  border:1px solid var(--border);
  padding:12px 12px;
  font:inherit;
  color:var(--text);
  background:#fff;
  outline:none;
}
input:focus, select:focus, textarea:focus{
  box-shadow:0 0 0 6px rgba(56,189,248,.18);
  border-color: rgba(56,189,248,.45);
}
.form__row{display:grid; gap:10px}
.form__actions{display:flex; flex-wrap:wrap; gap:12px; align-items:center; margin-top:6px}

.footer{
  border-top:1px solid var(--border);
  padding:30px 0;
}
.footer__inner{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:18px;
  flex-wrap:wrap;
}
.footer__links{display:flex; gap:14px; color:var(--muted); font-size:14px}
.footer__contact{display:grid; gap:8px}
.kbd{
  display:inline-flex;
  padding:6px 10px;
  border:1px solid var(--border);
  border-radius:12px;
  background:rgba(15,23,42,.03);
  font-size:13px;
}

@media (min-width: 900px){
  .nav{display:flex}
  .iconbtn{display:none}
  .mobile{display:none !important}
  .hero__grid{grid-template-columns: 1.1fr .9fr; padding:86px 0}
  .grid3{grid-template-columns: repeat(3, minmax(0,1fr))}
  .grid2{grid-template-columns: repeat(2, minmax(0,1fr))}
  .form__row{grid-template-columns: 1fr 1fr}
}