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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #222;
  background: #f5f7fa;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

header {
  background: #111827;
  color: white;
  padding: 20px 0;
  position: sticky;
  top: 0;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  font-size: 24px;
}

nav a {
  color: white;
  text-decoration: none;
  margin-left: 20px;
  font-weight: bold;
}

.hero {
  background: linear-gradient(135deg, #1e3a5f, #0f172a);
  color: white;
  padding: 100px 20px;
  text-align: center;
}

.hero h2 {
  font-size: 42px;
  margin-bottom: 15px;
}

.hero p {
  font-size: 18px;
}

.section {
  padding: 80px 20px;
}

.business {
  background: #ffffff;
}

.nautical {
  background: #eef4f8;
}

.contacts {
  background: #ffffff;
}

.section h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 34px;
  color: #111827;
}

.card {
  background: white;
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
  max-width: 700px;
  margin: auto;
}

.card h3 {
  margin-bottom: 20px;
  color: #1e3a5f;
}

.card p {
  margin-bottom: 20px;
}

.card a {
  color: #0f4c81;
  text-decoration: none;
}

footer {
  background: #111827;
  color: white;
  text-align: center;
  padding: 25px;
}

@media (max-width: 768px) {

  header .container {
    flex-direction: column;
    gap: 15px;
  }

  nav a {
    margin: 0 10px;
  }

  .hero h2 {
    font-size: 30px;
  }

  .section h2 {
    font-size: 28px;
  }

  .card {
    padding: 25px;
  }
}