:root {
  --bg: #0f172a;
  --dark: #111827;
  --text: #111827;
  --muted: #64748b;
  --line: #e5e7eb;
  --accent: #d97706;
  --accent-dark: #b45309;
  --light: #f8fafc;
  --white: #ffffff;
}

* { 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;
}

.container { width: min(1120px, 92%); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav { display: flex; align-items: center; justify-content: space-between; min-height: 76px; }
.logo { color: var(--dark); text-decoration: none; font-weight: 800; font-size: 24px; letter-spacing: -.5px; }
.logo span { color: var(--accent); margin-left: 4px; }
nav { display: flex; gap: 24px; align-items: center; }
nav a { color: var(--dark); text-decoration: none; font-weight: 600; font-size: 15px; }
.nav-cta { background: var(--accent); color: white; padding: 10px 16px; border-radius: 999px; }

.hero {
  background:
    linear-gradient(90deg, rgba(15,23,42,.93), rgba(15,23,42,.78)),
    url('https://images.unsplash.com/photo-1503387762-592deb58ef4e?auto=format&fit=crop&w=1600&q=80');
  background-size: cover;
  background-position: center;
  color: white;
  padding: 110px 0;
}

.hero-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 44px; align-items: center; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: 2px; font-weight: 800; font-size: 13px; }
h1 { font-size: clamp(42px, 7vw, 72px); line-height: .98; margin: 12px 0 22px; letter-spacing: -2px; }
h2 { font-size: clamp(32px, 4vw, 48px); line-height: 1.08; margin: 10px 0 24px; letter-spacing: -1px; }
h3 { margin-top: 0; font-size: 21px; }
.hero-text { max-width: 650px; font-size: 20px; color: #e2e8f0; }

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.btn {
  display: inline-block; border: 0; cursor: pointer;
  padding: 14px 22px; border-radius: 999px;
  text-decoration: none; font-weight: 800;
}
.primary { background: var(--accent); color: white; }
.primary:hover { background: var(--accent-dark); }
.secondary { background: white; color: var(--dark); }

.hero-card {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 24px;
  padding: 30px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
}
.hero-card ul { padding-left: 20px; margin-bottom: 0; }
.hero-card li { margin: 10px 0; }

.section { padding: 90px 0; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cards article {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: white;
  box-shadow: 0 10px 30px rgba(15,23,42,.06);
}
.cards p, .about p, .contact p { color: var(--muted); }

.dark { background: var(--bg); color: white; }
.dark h2, .dark h3 { color: white; }
.project-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.project-grid div { padding: 28px; background: rgba(255,255,255,.08); border-radius: 22px; border: 1px solid rgba(255,255,255,.12); }
.project-grid span { color: var(--accent); font-weight: 900; font-size: 32px; }
.project-grid p { color: #cbd5e1; }

.about { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.about p { font-size: 18px; }

.testimonials { background: var(--light); }
.quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
blockquote {
  margin: 0; padding: 28px;
  background: white; border-left: 5px solid var(--accent);
  border-radius: 18px; color: #334155;
  box-shadow: 0 10px 28px rgba(15,23,42,.06);
}

.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 50px; }
form { background: var(--light); padding: 30px; border-radius: 24px; border: 1px solid var(--line); }
label { display: block; font-weight: 700; margin-bottom: 16px; }
input, textarea {
  display: block; width: 100%; margin-top: 6px;
  padding: 13px 14px; border-radius: 12px;
  border: 1px solid #cbd5e1; font: inherit;
}
textarea { resize: vertical; }

footer { background: var(--dark); color: #cbd5e1; padding: 26px 0; }
.footer-grid { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer p { margin: 0; }

@media (max-width: 850px) {
  nav { display: none; }
  .hero { padding: 80px 0; }
  .hero-grid, .cards, .project-grid, .about, .quote-grid, .contact-grid { grid-template-columns: 1fr; }
  h1 { font-size: 46px; }
  .section { padding: 64px 0; }
}