:root {
  --ink: #152129;
  --muted: #5b6972;
  --line: #dbe3e7;
  --paper: #f7f9f8;
  --white: #ffffff;
  --teal: #0f766e;
  --teal-dark: #0b514c;
  --gold: #f3b33d;
  --red: #c2412d;
  --shadow: 0 22px 70px rgba(21, 33, 41, 0.14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  padding: 14px clamp(18px, 5vw, 64px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(219, 227, 231, 0.9);
  backdrop-filter: blur(18px);
}

.brand img {
  width: 58px;
  height: 52px;
  object-fit: contain;
  object-position: left center;
}

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

.brand span {
  color: var(--ink);
  font-size: 0.96rem;
  font-weight: 950;
  line-height: 1.05;
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(16px, 3vw, 34px);
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 700;
}

.nav a:hover {
  color: var(--teal);
}

.header-call,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 6px;
  font-weight: 800;
  white-space: nowrap;
}

.header-call,
.button.primary {
  color: var(--white);
  background: var(--red);
}

.button.secondary {
  color: var(--ink);
  background: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.55);
}

.hero {
  position: relative;
  min-height: 720px;
  display: grid;
  align-items: end;
  padding: 138px clamp(18px, 5vw, 64px) 64px;
  overflow: hidden;
  color: var(--white);
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 24, 31, 0.88) 0%, rgba(6, 24, 31, 0.68) 42%, rgba(6, 24, 31, 0.2) 100%),
    url("assets/img/hero.jpg") center / cover;
}

.hero-content {
  position: relative;
  max-width: 780px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(2.65rem, 6vw, 5.6rem);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.75rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  font-size: 1.35rem;
  line-height: 1.2;
}

.hero-copy {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.18rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 30px 0;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 680px;
  margin: 38px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
}

.hero-stats div {
  padding: 22px 22px 0 0;
}

.hero-stats dt {
  font-size: 1.55rem;
  font-weight: 900;
}

.hero-stats dd {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.trust-band {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  padding: 18px;
  color: var(--white);
  background: var(--teal-dark);
}

.trust-band span {
  padding: 8px 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  font-weight: 800;
}

.section {
  padding: clamp(72px, 10vw, 128px) clamp(18px, 5vw, 64px);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(280px, 0.75fr);
  gap: clamp(32px, 7vw, 92px);
  align-items: start;
  background: var(--white);
}

.split-copy {
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.75;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.services {
  background: var(--paper);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-card,
.plan-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 10px 30px rgba(21, 33, 41, 0.06);
}

.service-card img {
  width: 100%;
  aspect-ratio: 1.25;
  object-fit: cover;
}

.service-card div {
  padding: 24px;
}

.service-card p,
.plan-card li,
.proof-grid p,
.contact-card p,
.site-footer p {
  color: var(--muted);
  line-height: 1.65;
}

.plans {
  background: var(--white);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.plan-card {
  padding: 28px;
}

.plan-card.featured {
  color: var(--white);
  background: var(--teal-dark);
  border-color: var(--teal-dark);
}

.plan-card.featured li,
.plan-card.featured .price span {
  color: rgba(255, 255, 255, 0.78);
}

.plan-kicker {
  margin-bottom: 8px;
  color: var(--red);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.featured .plan-kicker {
  color: var(--gold);
}

.price {
  margin: 18px 0;
  font-size: 2.35rem;
  font-weight: 950;
}

.price span {
  color: var(--muted);
  font-size: 1rem;
}

ul {
  margin: 0;
  padding-left: 18px;
}

li + li {
  margin-top: 10px;
}

.proof {
  background:
    linear-gradient(rgba(247, 249, 248, 0.92), rgba(247, 249, 248, 0.92)),
    url("assets/img/commercial-hvac.jpg") center / cover;
}

.proof-panel {
  max-width: 1040px;
  padding: clamp(28px, 5vw, 56px);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 28px;
}

.proof-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.contact {
  background: var(--teal-dark);
}

.contact-card {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(300px, 0.7fr);
  gap: clamp(30px, 6vw, 72px);
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px);
  border-radius: 8px;
  background: var(--white);
}

.phone-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--red);
  font-size: 2rem;
  font-weight: 950;
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: #fbfcfc;
  font: inherit;
}

textarea {
  resize: vertical;
}

.site-footer {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 28px clamp(18px, 5vw, 64px);
  color: var(--white);
  background: #111c22;
}

.site-footer img {
  width: 76px;
  height: 64px;
  object-fit: contain;
  background: var(--white);
  border-radius: 6px;
  padding: 8px;
}

.site-footer p {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.68);
}

.site-footer a {
  color: var(--gold);
  font-weight: 900;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .nav {
    display: none;
  }

  .service-grid,
  .plan-grid,
  .proof-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split,
  .contact-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header {
    gap: 12px;
  }

  .brand img {
    width: 46px;
  }

  .brand span {
    font-size: 0.82rem;
  }

  .header-call {
    min-height: 42px;
    padding: 0 12px;
    font-size: 0.86rem;
  }

  .hero {
    min-height: 680px;
    padding-top: 110px;
  }

  .hero-media {
    background:
      linear-gradient(180deg, rgba(6, 24, 31, 0.88) 0%, rgba(6, 24, 31, 0.78) 64%, rgba(6, 24, 31, 0.68) 100%),
      url("assets/img/hero.jpg") 58% center / cover;
  }

  .hero-stats,
  .service-grid,
  .plan-grid,
  .proof-grid,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .hero-stats div {
    padding-top: 18px;
  }

  .button,
  .hero-actions {
    width: 100%;
  }

  .contact-card,
  .proof-panel {
    padding: 24px;
  }

  .phone-link {
    font-size: 1.5rem;
  }
}