:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #5f6c7b;
  --line: #d8dee6;
  --surface: #ffffff;
  --soft: #f4f7fa;
  --brand: #064c3d;
  --brand-dark: #032d25;
  --accent: #f47b20;
  --warm: #f8efe0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
  background: var(--surface);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 14px clamp(20px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-weight: 700;
}

.brand img {
  display: block;
  width: 118px;
  height: 46px;
  object-fit: contain;
  border-radius: 6px;
  background: #000;
}

.brand-name {
  color: var(--brand-dark);
  font-size: 1rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 0.95rem;
}

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

.hero {
  display: grid;
  align-items: center;
  min-height: 560px;
  padding: 72px clamp(20px, 7vw, 88px);
  background:
    linear-gradient(90deg, rgba(3, 45, 37, 0.9), rgba(3, 45, 37, 0.42)),
    url("../../assets/img/hvac-real.jpg");
  background-position: center;
  background-size: cover;
  color: white;
}

.hero-content {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.section h2 {
  margin: 0;
  line-height: 1.05;
  letter-spacing: 0;
}

.hero h1 {
  max-width: 820px;
  font-size: clamp(2.35rem, 7vw, 4.6rem);
}

.hero p:not(.eyebrow) {
  max-width: 640px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.15rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.button.primary,
button {
  color: white;
  background: var(--brand);
}

.button.secondary {
  color: white;
  border-color: rgba(255, 255, 255, 0.52);
  background: rgba(255, 255, 255, 0.1);
}

.section {
  padding: 72px clamp(20px, 6vw, 80px);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

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

.service-card {
  overflow: hidden;
  min-height: 210px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.service-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.service-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 42px;
  margin: 22px 24px 18px;
  color: var(--brand-dark);
  background: var(--warm);
  border: 1px solid rgba(244, 123, 32, 0.28);
  border-radius: 6px;
  font-size: 0.86rem;
  font-weight: 800;
}

.service-card h3 {
  margin: 0 24px 12px;
  font-size: 1.25rem;
}

.service-card p {
  margin: 0 24px 24px;
}

.service-card p,
.partner-card p,
.project-feature p,
.split p,
.notice p,
.contact p {
  color: var(--muted);
}

.projects {
  background: var(--soft);
}

.project-stack {
  display: grid;
  gap: 18px;
}

.project-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.8fr);
  gap: 32px;
  align-items: stretch;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.project-tag {
  display: inline-flex;
  margin: 0 0 12px;
  padding: 7px 10px;
  color: var(--brand-dark);
  background: var(--warm);
  border: 1px solid rgba(244, 123, 32, 0.28);
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.project-feature h3 {
  max-width: 760px;
  margin: 0 0 14px;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  line-height: 1.12;
}

.project-feature p:not(.project-tag) {
  max-width: 780px;
  margin: 0;
  font-size: 1.08rem;
}

.project-list {
  display: grid;
  align-content: center;
  gap: 12px;
  margin: 0;
  padding: 22px;
  color: var(--ink);
  border-radius: 8px;
  background: #f8fafc;
  list-style-position: inside;
}

.project-list li::marker {
  color: var(--accent);
}

.notice {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 40px;
  color: white;
  background: var(--brand-dark);
}

.notice .eyebrow {
  color: #f0c86e;
}

.notice p {
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.12rem;
}

.allies {
  background: #fff;
}

.partner-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.partner-card {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.partner-card span {
  display: grid;
  place-items: center;
  width: 58px;
  height: 42px;
  margin-bottom: 18px;
  color: white;
  background: var(--brand-dark);
  border-radius: 6px;
  font-weight: 800;
}

.partner-card h3 {
  margin: 0 0 10px;
  font-size: 1.3rem;
}

.partner-card p {
  margin: 0;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 40px;
  background: var(--soft);
}

.split p {
  margin: 0;
  font-size: 1.15rem;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 0.65fr);
  gap: 40px;
}

.contact-form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 14px;
  color: var(--ink);
  font: inherit;
  resize: vertical;
}

input:focus,
textarea:focus {
  outline: 3px solid rgba(15, 111, 120, 0.18);
  border-color: var(--brand);
}

.site-footer {
  padding: 28px clamp(20px, 6vw, 80px);
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--soft);
}

.site-footer p {
  margin: 0;
}

@media (max-width: 760px) {
  .site-header,
  .nav,
  .actions {
    align-items: flex-start;
  }

  .site-header {
    flex-direction: column;
  }

  .nav {
    flex-wrap: wrap;
  }

  .hero {
    min-height: 520px;
  }

  .service-grid,
  .project-feature,
  .notice,
  .partner-grid,
  .split,
  .contact {
    grid-template-columns: 1fr;
  }
}