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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background: #f8fafc;
}

.site-header {
  background: #0f172a;
  color: white;
  padding: 18px 0;
  position: sticky;
  top: 0;
}

.nav,
.container {
  width: min(1100px, 90%);
  margin: 0 auto;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo {
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nav-links a {
  color: white;
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-links a:hover {
  text-decoration: underline;
}

.section {
  padding: 70px 0;
}

.hero {
  background: linear-gradient(135deg, #e0f2fe, #f8fafc);
  min-height: 70vh;
  display: flex;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.8rem;
  color: #0369a1;
  font-weight: bold;
  margin-bottom: 12px;
}

.hero h2 {
  font-size: clamp(2.3rem, 6vw, 4.5rem);
  line-height: 1.1;
  margin-bottom: 12px;
  color: #0f172a;
}

.tagline {
  font-size: 1.5rem;
  font-weight: bold;
  color: #0369a1;
  margin-bottom: 18px;
}

.intro {
  max-width: 680px;
  font-size: 1.1rem;
  margin-bottom: 28px;
}

.button {
  display: inline-block;
  background: #0f172a;
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
}

.button:hover {
  background: #1e293b;
}

h2 {
  font-size: 2rem;
  margin-bottom: 22px;
  color: #0f172a;
}

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

.card {
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 22px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05);
}

.card h3 {
  margin-bottom: 10px;
  color: #0f172a;
}

.about {
  background: white;
}

.about p,
.contact p {
  max-width: 750px;
  margin-bottom: 16px;
}

.contact {
  text-align: center;
}

.email-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 1.3rem;
  color: #0369a1;
  font-weight: bold;
  text-decoration: none;
}

.email-link:hover {
  text-decoration: underline;
}

.footer {
  text-align: center;
  padding: 24px;
  background: #0f172a;
  color: white;
  font-size: 0.9rem;
}

@media (max-width: 850px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 550px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 50px 0;
  }
}