* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", sans-serif;
}

body {
  line-height: 1.6;
  color: #333;
}

header {
  background: #fff;
  border-bottom: 1px solid #ccc;
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  height: 50px;
  vertical-align: middle;
}

nav {
  float: right;
}

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

nav a {
  text-decoration: none;
  color: #000;
  font-weight: 500;
}

.hero {
  background: #003b5c;
  color: white;
  padding: 80px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.2em;
  margin-bottom: 20px;
}

.btn {
  background: #00b4d8;
  color: white;
  padding: 12px 24px;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}

section {
  padding: 60px 20px;
}

section.gray {
  background-color: #f4f4f4;
}

h2 {
  text-align: center;
  margin-bottom: 40px;
}

.cards {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  max-width: 300px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

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

input,
textarea {
  padding: 10px;
  font-size: 1em;
  border: 1px solid #ccc;
  border-radius: 5px;
}

button {
  background: #0077b6;
  color: white;
  border: none;
  padding: 12px;
  font-size: 1em;
  cursor: pointer;
  border-radius: 5px;
}

footer {
  text-align: center;
  padding: 20px;
  background: #000;
  color: #fff;
  font-size: 0.9em;
}