* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  line-height: 1.6;
  background: #f9fafb;
  color: #111;
  padding-top: 80px;
}

.navbar {
  background-color: #1e3a8a;
  color: white;
  padding: 1rem 2rem;
  position: fixed;
  top: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 999;
}

.navbar .logo {
  font-weight: bold;
  font-size: 1.2rem;
}

.navbar ul {
  list-style: none;
  display: flex;
  gap: 1.2rem;
}

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

header {
  padding: 4rem 2rem;
  background: linear-gradient(145deg, #dbeafe, #bfdbfe);
  border-radius: 1rem;
  margin: 2rem;
}

header h1 {
  font-size: 3rem;
  color: #1e3a8a;
}

header p {
  font-size: 1.25rem;
  margin: 1rem 0 2rem;
  color: #1f2937;
}

.subscribe-btn {
  background-color: #2563eb;
  color: white;
  padding: 0.8rem 1.5rem;
  font-size: 1.1rem;
  border: none;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: background 0.3s ease;
}

.subscribe-btn:hover {
  background-color: #1d4ed8;
}

.features {
  max-width: 700px;
  margin: 2rem auto;
  padding: 0 1rem;
  text-align: left;
}

.features h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  color: #1e40af;
}

.features ul {
  list-style: none;
  padding-left: 1rem;
}

.features li {
  font-size: 1.1rem;
  margin: 0.5rem 0;
}

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

section h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: #1e3a8a;
}

section p {
  font-size: 1rem;
  color: #374151;
}

.footer {
  font-size: 0.9rem;
  color: #6b7280;
  text-align: center;
  margin: 3rem 0 1rem;
}