* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  color: #1f2933;
  background: #ffffff;
}

header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 22px 8%;
  background: rgba(0, 31, 61, 0.95);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
}

.logo {
  color: white;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 1px;
}

nav a {
  color: white;
  text-decoration: none;
  margin-left: 25px;
  font-weight: 700;
}

nav a:hover {
  color: #f58220;
}

.hero {
  min-height: 100vh;
  background:
    linear-gradient(rgba(0, 20, 45, 0.72), rgba(0, 20, 45, 0.72)),
    url("https://images.unsplash.com/photo-1581092918056-0c4c3acd3789?auto=format&fit=crop&w=1800&q=80");
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  padding: 120px 8% 80px;
  color: white;
}

.hero-content {
  max-width: 850px;
}

.tagline {
  color: #f58220;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 58px;
  line-height: 1.1;
  margin: 20px 0;
}

.hero p {
  font-size: 20px;
  max-width: 760px;
  margin-bottom: 35px;
}

.btn {
  display: inline-block;
  background: #f58220;
  color: white;
  padding: 15px 30px;
  text-decoration: none;
  font-weight: 800;
  border-radius: 4px;
  margin-right: 12px;
}

.btn.secondary {
  background: transparent;
  border: 2px solid white;
}

.section {
  padding: 90px 8%;
  text-align: center;
}

.section h2 {
  color: #002b4f;
  font-size: 40px;
  margin-bottom: 18px;
}

.section p {
  max-width: 900px;
  margin: 0 auto 35px;
  font-size: 18px;
}

.dark {
  background: #f2f5f7;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin-top: 35px;
}

.grid div {
  background: white;
  padding: 35px 25px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  font-weight: 800;
  color: #002b4f;
  transition: 0.3s;
}

.grid div:hover {
  transform: translateY(-8px);
  border-bottom: 5px solid #f58220;
}

.contact form {
  max-width: 760px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

input,
textarea {
  padding: 16px;
  border: 1px solid #ccc;
  font-size: 16px;
}

textarea {
  min-height: 150px;
}

button {
  background: #f58220;
  color: white;
  border: none;
  padding: 16px;
  font-size: 18px;
  font-weight: 800;
  cursor: pointer;
}

footer {
  background: #002b4f;
  color: white;
  text-align: center;
  padding: 40px 8%;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    padding: 18px;
  }

  nav {
    margin-top: 12px;
  }

  nav a {
    display: inline-block;
    margin: 8px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}