:root {
  --navy: #071b3a;
  --blue: #1167b1;
  --orange: #ed4b19;
  --light: #f5f7fa;
  --text: #172033;
  --muted: #687386;
  --white: #ffffff;
  --border: #e3e8ef;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand img { width: 150px; height: 70px; object-fit: contain; }
.nav { display: flex; align-items: center; gap: 28px; font-weight: 700; }
.nav a:hover { color: var(--blue); }
.nav-call {
  background: var(--orange);
  color: white;
  padding: 11px 18px;
  border-radius: 8px;
}
.menu-btn { display: none; border: 0; background: none; font-size: 28px; }

.hero {
  min-height: 640px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 20%, rgba(17,103,177,.32), transparent 30%),
    linear-gradient(120deg, #061631 0%, #0b2b55 60%, #123f72 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(3,13,30,.95), rgba(3,13,30,.48), rgba(3,13,30,.1));
}
.hero-content { position: relative; z-index: 2; }
.hero-copy { max-width: 720px; color: white; padding: 90px 0; }
.eyebrow {
  margin: 0 0 10px;
  font-size: .82rem;
  font-weight: 900;
  letter-spacing: .14em;
  color: var(--orange);
}
.hero h1 {
  font-size: clamp(3rem, 7vw, 5.8rem);
  line-height: .98;
  margin: 0 0 22px;
  letter-spacing: -.04em;
}
.hero-text { font-size: 1.2rem; max-width: 650px; color: #e8eef7; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 50px;
  padding: 13px 22px;
  border-radius: 8px;
  font-weight: 900;
  transition: transform .2s ease, opacity .2s ease;
}
.btn:hover { transform: translateY(-2px); opacity: .92; }
.btn-primary { background: var(--orange); color: white; }
.btn-secondary { border: 2px solid white; color: white; }
.btn-light { background: white; color: var(--navy); }

.section { padding: 90px 0; }
.section-heading { text-align: center; max-width: 700px; margin: 0 auto 45px; }
.section-heading h2, .about-grid h2, .contact-grid h2, .cta h2 {
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.1;
  margin: 0 0 14px;
}
.section-heading p:last-child, .contact-grid p { color: var(--muted); }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.service-card {
  padding: 34px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: white;
  box-shadow: 0 12px 35px rgba(7,27,58,.07);
}
.service-card h3 { font-size: 1.6rem; margin: 12px 0 8px; }
.service-card p { color: var(--muted); }
.icon {
  width: 62px; height: 62px; border-radius: 14px;
  display: grid; place-items: center; font-size: 30px;
}
.heating { background: #fff0eb; }
.cooling { background: #eaf4ff; }
.plumbing { background: #edf1f5; }

.section-dark { background: var(--navy); color: white; }
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr .7fr;
  gap: 70px;
  align-items: center;
}
.about-grid p { color: #cbd6e5; }
.trust-box {
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 16px;
  padding: 25px;
  background: rgba(255,255,255,.06);
}
.trust-box div { padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.13); font-weight: 700; }
.trust-box div:last-child { border-bottom: 0; }

.cta { background: linear-gradient(90deg, var(--orange), #d93e10); color: white; padding: 55px 0; }
.cta .eyebrow { color: white; }
.cta p { margin-bottom: 0; opacity: .92; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.contact-card {
  padding: 35px;
  border-radius: 16px;
  background: var(--light);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}
.contact-card > span { font-size: .8rem; font-weight: 900; letter-spacing: .12em; color: var(--muted); }
.phone { font-size: clamp(2rem, 5vw, 3.3rem); color: var(--blue); font-weight: 900; }

.footer { background: #030d1e; color: #b9c4d2; padding: 25px 0; font-size: .9rem; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

@media (max-width: 760px) {
  .nav { display: none; position: absolute; left: 20px; right: 20px; top: 75px; background: white; padding: 18px; border: 1px solid var(--border); border-radius: 10px; flex-direction: column; align-items: stretch; }
  .nav.open { display: flex; }
  .menu-btn { display: block; }
  .cards, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .hero { min-height: 570px; }
}