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

body {
  margin: 0;
  background-color: #f4f6f8;
  color: #333;
}

header {
  background-color: #0b3c5d;
  color: white;
  padding: 30px 0;
}

header h1 {
  margin: 0;
  font-size: 32px;
}

header p {
  margin-top: 8px;
  font-size: 16px;
  opacity: 0.9;
}

.container {
  max-width: 960px;
  margin: auto;
  padding: 20px;
}

.intro h2 {
  color: #0b3c5d;
}

.download {
  margin-top: 40px;
  text-align: center;
}

.btn {
  background-color: #1f7a8c;
  color: white;
  padding: 14px 28px;
  text-decoration: none;
  font-size: 16px;
  border-radius: 6px;
  transition: background 0.3s;
}

.btn:hover {
  background-color: #145c6a;
}

footer {
  margin-top: 60px;
  background-color: #eaeaea;
  text-align: center;
  padding: 15px;
  font-size: 14px;
  color: #555;
}