body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #e0e6ed;
  background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)),
              url('hero-background.png') center/cover no-repeat fixed;
  background-size: cover;
  background-attachment: fixed;
}

.hero {
  text-align: center;
  padding: 6rem 1rem;
  color: white;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.logo {
  max-width: 120px;
  margin-bottom: 1rem;
}

h1 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.tagline {
  font-size: 1.4rem;
  color: #66cfff;
}

nav {
  background-color: rgba(18, 33, 50, 0.95);
  padding: 1rem;
  text-align: center;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

nav ul li {
  display: inline-block;
  margin: 0 1rem;
}

nav ul li a {
  color: #a8c8ff;
  text-decoration: none;
  font-weight: bold;
}

nav ul li a:hover {
  color: #66cfff;
}

main {
  padding: 2rem 1rem;
  max-width: 800px;
  margin: auto;
}

section {
  margin-bottom: 3rem;
}

h2 {
  border-bottom: 2px solid #66cfff;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
  color: #ffffff;
}

footer {
  background-color: #1c2f46;
  color: #a0b6cc;
  text-align: center;
  padding: 1rem;
}