* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  color: #111827;
  background-color: #f3f4f6;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background: #111827;
  color: white;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.05em;
}

.nav a {
  margin-left: 1rem;
  color: #e5e7eb;
  text-decoration: none;
  font-size: 0.95rem;
}

.nav a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: 4rem 1.5rem;
  background: radial-gradient(circle at top left, #1f2937, #020617);
  color: white;
}

.hero-content {
  max-width: 640px;
}

.hero h1 {
  font-size: 2.3rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  color: #e5e7eb;
}

.btn-primary {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  background: #2563eb;
  color: white;
  border-radius: 0.375rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-weight: 500;
}

.btn-primary:hover {
  background: #1d4ed8;
}

.section {
  padding: 3rem 1.5rem;
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.section-alt {
  background: white;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.card {
  background: white;
  border-radius: 0.5rem;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.1);
}

.card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.card p {
  font-size: 0.95rem;
  color: #4b5563;
}

.section p {
  max-width: 800px;
  margin: 0 auto;
  color: #4b5563;
  font-size: 0.98rem;
}

.contact-form {
  max-width: 500px;
  margin: 1.5rem auto 0;
  display: grid;
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.3rem;
  font-size: 0.95rem;
}

.contact-form input,
.contact-form textarea {
  padding: 0.6rem 0.75rem;
  border-radius: 0.375rem;
  border: 1px solid #d1d5db;
  font: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid #2563eb;
  outline-offset: 1px;
  border-color: #2563eb;
}

.site-footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.85rem;
  color: #6b7280;
}
  
@media (max-width: 600px) {
  .hero {
    padding-top: 5rem;
  }

  .hero h1 {
    font-size: 1.9rem;
  }

  .nav {
    font-size: 0.85rem;
  }

  .nav a {
    margin-left: 0.6rem;
  }
}