:root {
  --ink: #07111f;
  --ink-soft: #0c1b2b;
  --orange: #ff7a1a;
  --orange-light: #ff9a50;
  --blue: #66c7f2;
  --ice: #dff4ff;
  --white: #f8fbfd;
  --muted: #718091;
  --line: rgba(7,17,31,.12);
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "DM Sans", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

.site-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.7rem 2rem;
  color: white;
}
.brand { display: inline-flex; align-items: center; gap: .8rem; }
.brand-mark {
  position: relative; display: grid; place-items: center;
  width: 2.35rem; height: 2.35rem; border: 1px solid rgba(255,255,255,.6); border-radius: 50%;
}
.brand-mark::before, .brand-mark::after { content: ""; position: absolute; background: var(--orange); border-radius: 999px; }
.brand-mark::before { width: 1.05rem; height: .2rem; transform: rotate(-35deg); }
.brand-mark::after { width: .2rem; height: 1.05rem; transform: rotate(-35deg); }
.brand-mark span { width: .38rem; height: .38rem; background: var(--orange); border-radius: 50%; }
.brand-name { font: 700 1.05rem/1 "Manrope", sans-serif; letter-spacing: .08em; }
.brand-name b { color: var(--orange); font-weight: 800; }
nav { display: flex; align-items: center; gap: 2rem; font-weight: 600; font-size: .94rem; }
nav a:not(.nav-cta) { color: rgba(255,255,255,.82); transition: color .2s; }
nav a:not(.nav-cta):hover { color: white; }
.nav-cta { padding: .75rem 1.2rem; border: 1px solid rgba(255,255,255,.45); border-radius: 999px; }
.menu-toggle { display: none; background: none; border: 0; color: white; }

.hero { position: relative; min-height: 780px; height: 100svh; max-height: 980px; color: white; overflow: hidden; background: var(--ink); }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(3,10,20,.96) 0%, rgba(3,10,20,.78) 33%, rgba(3,10,20,.2) 67%, rgba(3,10,20,.08) 100%),
              linear-gradient(0deg, rgba(3,10,20,.55) 0%, transparent 35%);
}
.hero-content { position: relative; z-index: 2; display: flex; flex-direction: column; justify-content: center; max-width: var(--max); height: 100%; margin: 0 auto; padding: 8rem 2rem 4rem; }
.eyebrow, .section-label { margin: 0 0 1.25rem; color: var(--orange); font-weight: 700; font-size: .78rem; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow { display: flex; align-items: center; gap: .7rem; color: #d8e7f2; }
.eyebrow span { width: 2.25rem; height: 2px; background: var(--orange); }
h1, h2, h3 { font-family: "Manrope", sans-serif; margin-top: 0; }
h1 { max-width: 760px; margin-bottom: 1.5rem; font-size: clamp(3.35rem, 6.4vw, 6.3rem); line-height: .98; letter-spacing: -.055em; }
h1 em, h2 em { color: var(--blue); font-style: normal; }
.hero-copy { max-width: 580px; margin: 0 0 2.1rem; color: rgba(255,255,255,.78); font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: .75rem; min-height: 3.3rem; padding: .75rem 1.35rem; border-radius: 999px; font-weight: 700; border: 1px solid transparent; cursor: pointer; transition: transform .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--orange); color: #111; }
.button-primary:hover { background: var(--orange-light); }
.button-ghost { border-color: rgba(255,255,255,.38); color: white; }
.button-ghost:hover { background: rgba(255,255,255,.08); }
.hero-proof { display: flex; gap: 3.5rem; margin-top: 4.5rem; }
.hero-proof div { display: flex; flex-direction: column; }
.hero-proof strong { font: 700 1.08rem "Manrope", sans-serif; }
.hero-proof span { color: rgba(255,255,255,.52); font-size: .88rem; }
.scroll-cue { position: absolute; z-index: 2; right: 2rem; bottom: 2.4rem; display: flex; align-items: center; gap: .65rem; color: rgba(255,255,255,.6); font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; }
.scroll-cue span { width: 2.6rem; height: 1px; background: var(--orange); }

.section { padding: 7.5rem max(2rem, calc((100vw - var(--max)) / 2)); }
.intro { background: var(--white); }
.intro-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 6rem; align-items: end; }
h2 { margin-bottom: 0; font-size: clamp(2.45rem, 4.7vw, 4.65rem); line-height: 1.06; letter-spacing: -.05em; }
.intro-grid > div p { color: #536273; font-size: 1.1rem; }
.text-link { display: inline-flex; align-items: center; gap: .65rem; margin-top: 1.2rem; border-bottom: 1px solid var(--orange); padding-bottom: .35rem; font-weight: 700; }

.services { background: #edf5f9; }
.section-heading { display: grid; grid-template-columns: 1.3fr .7fr; gap: 6rem; align-items: end; margin-bottom: 3.5rem; }
.section-heading > p { max-width: 460px; color: #647485; }
.service-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.service-card { position: relative; min-height: 520px; padding: 3rem; overflow: hidden; border-radius: 1.2rem; }
.service-solar { background: var(--ink); color: white; }
.service-heat { background: var(--blue); color: var(--ink); }
.service-number { position: absolute; right: 2.5rem; top: 2rem; color: rgba(255,255,255,.35); font: 600 4.5rem/1 "Manrope"; }
.service-heat .service-number { color: rgba(7,17,31,.2); }
.service-icon { width: 4.25rem; height: 4.25rem; margin-bottom: 3.5rem; }
.service-icon svg { width: 100%; height: 100%; fill: none; stroke: var(--orange); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.service-heat .service-icon svg { stroke: var(--ink); }
.service-card h3 { margin-bottom: .8rem; font-size: 2rem; }
.service-card p { max-width: 510px; color: rgba(255,255,255,.68); }
.service-heat p { color: rgba(7,17,31,.7); }
.service-card ul { padding: 0; margin: 1.5rem 0 2.2rem; list-style: none; }
.service-card li { padding: .55rem 0; border-bottom: 1px solid rgba(255,255,255,.14); }
.service-heat li { border-color: rgba(7,17,31,.15); }
.service-card li::before { content: "—"; margin-right: .65rem; color: var(--orange); }
.service-heat li::before { color: var(--ink); }
.service-card a { display: inline-flex; gap: .7rem; font-weight: 700; }

.process { display: grid; grid-template-columns: .85fr 1.15fr; gap: 8rem; background: var(--ink); color: white; }
.section-label-light { color: var(--orange); }
.process-copy > p:last-child { max-width: 520px; color: rgba(255,255,255,.58); }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li { display: grid; grid-template-columns: 3.5rem 1fr; gap: 1rem; padding: 1.55rem 0; border-top: 1px solid rgba(255,255,255,.14); }
.steps li:last-child { border-bottom: 1px solid rgba(255,255,255,.14); }
.steps > li > span { color: var(--orange); font-size: .8rem; font-weight: 700; }
.steps h3 { margin-bottom: .25rem; font-size: 1.2rem; }
.steps p { margin: 0; color: rgba(255,255,255,.56); font-size: .95rem; }

.about { background: linear-gradient(135deg, #f4f8fa, #dff4ff); }
.about-card { max-width: 980px; }
.about-card > p:not(.section-label) { max-width: 760px; margin: 2rem 0 3rem; color: #526273; font-size: 1.1rem; }
.company-details { display: grid; grid-template-columns: 1fr 1fr 1.5fr; gap: 1rem; }
.company-details div { padding: 1.4rem; border-top: 2px solid var(--orange); background: rgba(255,255,255,.7); }
.company-details span { display: block; margin-bottom: .6rem; color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; }
.company-details strong { font-family: "Manrope"; line-height: 1.45; }

.contact { display: grid; grid-template-columns: .8fr 1.2fr; gap: 7rem; background: white; }
.contact-copy { position: sticky; top: 3rem; align-self: start; }
.contact-copy p:last-child { max-width: 470px; color: var(--muted); margin-top: 1.6rem; }
.enquiry-form { padding: 2.2rem; border-radius: 1rem; background: var(--ink); color: white; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.enquiry-form label, .enquiry-form legend { display: block; font-weight: 600; font-size: .88rem; }
.enquiry-form input, .enquiry-form textarea {
  width: 100%; margin-top: .45rem; padding: .9rem 1rem; color: white; background: rgba(255,255,255,.065);
  border: 1px solid rgba(255,255,255,.16); border-radius: .5rem; outline: none;
}
.enquiry-form input:focus, .enquiry-form textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(102,199,242,.15); }
.enquiry-form textarea { resize: vertical; min-height: 115px; }
.enquiry-form > label, .enquiry-form fieldset { margin-bottom: 1.25rem; }
.enquiry-form fieldset { padding: 0; border: 0; }
.choice-row { display: flex; gap: .6rem; margin-top: .55rem; }
.choice { cursor: pointer; }
.choice input { position: absolute; opacity: 0; pointer-events: none; }
.choice span { display: inline-block; padding: .65rem .85rem; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; color: rgba(255,255,255,.75); }
.choice input:checked + span { background: var(--blue); border-color: var(--blue); color: var(--ink); }
.submit-button { width: 100%; border: 0; }
.form-note, .form-status { margin: .75rem 0 0; text-align: center; color: rgba(255,255,255,.48); font-size: .78rem; }
.form-status { color: var(--blue); }

footer { padding: 4rem max(2rem, calc((100vw - var(--max)) / 2)) 2rem; background: #040a12; color: white; }
.footer-brand { margin-bottom: 1.5rem; }
footer > p { max-width: 500px; color: rgba(255,255,255,.55); }
.footer-meta { display: flex; justify-content: space-between; margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.42); font-size: .82rem; }

@media (max-width: 900px) {
  nav { position: absolute; top: 5.4rem; left: 1.25rem; right: 1.25rem; display: none; flex-direction: column; align-items: stretch; padding: 1.25rem; background: rgba(7,17,31,.97); border: 1px solid rgba(255,255,255,.14); border-radius: .8rem; }
  nav.open { display: flex; }
  .menu-toggle { display: grid; gap: .35rem; padding: .7rem; cursor: pointer; }
  .menu-toggle > span:not(.sr-only) { display: block; width: 1.5rem; height: 2px; background: white; }
  .intro-grid, .section-heading, .process, .contact { grid-template-columns: 1fr; gap: 3rem; }
  .service-grid { grid-template-columns: 1fr; }
  .contact-copy { position: static; }
}

@media (max-width: 620px) {
  .site-header { padding: 1.25rem; }
  .hero { min-height: 760px; }
  .hero-content { padding: 7rem 1.25rem 3rem; }
  .hero-overlay { background: linear-gradient(90deg, rgba(3,10,20,.94), rgba(3,10,20,.52)), linear-gradient(0deg, rgba(3,10,20,.85), transparent 60%); }
  .hero-image { object-position: 68% center; }
  h1 { font-size: clamp(2.9rem, 14vw, 4.1rem); }
  .hero-proof { gap: 1.5rem; margin-top: 3.5rem; }
  .scroll-cue { display: none; }
  .section { padding: 5rem 1.25rem; }
  h2 { font-size: 2.55rem; }
  .service-card { min-height: auto; padding: 2rem 1.4rem; }
  .service-number { right: 1.25rem; font-size: 3.5rem; }
  .company-details, .field-row { grid-template-columns: 1fr; }
  .choice-row { flex-wrap: wrap; }
  .enquiry-form { padding: 1.4rem; }
  .footer-meta { flex-direction: column; gap: .5rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}