* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  color: #222;
  background-color: #fff;
}

header {
  position: fixed;
  width: 100%;
  top: 0;
  background: #003366;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 40px;
  z-index: 1000;
}

header .logo {
  font-size: 1.8em;
  font-weight: bold;
  color: #00aaff;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav a {
  text-decoration: none;
  color: white;
  font-weight: 500;
}

nav a:hover {
  color: #00aaff;
}

.hero {
  height: 100vh;
  background: url('https://images.unsplash.com/photo-1507525428034-b723cf961d3e?auto=format&fit=crop&w=1600&q=80') center/cover no-repeat;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  text-align: center;
}

.hero .overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 30, 60, 0.6);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero h1 {
  font-size: 3em;
  margin-bottom: 10px;
}

.hero h2 {
  font-size: 1.5em;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2em;
  margin-bottom: 30px;
}

.btn {
  background: #00aaff;
  color: white;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  transition: 0.3s;
}

.btn:hover {
  background: #007acc;
}

.section {
  padding: 100px 20px;
  text-align: center;
}

.section h2 {
  color: #003366;
  margin-bottom: 40px;
  font-size: 2em;
}

.services {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 30px;
}

.card {
  background: #f0f8ff;
  border-radius: 10px;
  padding: 30px;
  width: 300px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.about p {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

.contact form {
  display: flex;
  flex-direction: column;
  gap: 15px;
  max-width: 500px;
  margin: 0 auto;
}

.contact input, .contact textarea {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

.contact button {
  background: #003366;
  color: white;
  padding: 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.contact button:hover {
  background: #0055aa;
}

footer {
  background: #003366;
  color: white;
  text-align: center;
  padding: 20px 0;
  margin-top: 50px;
}