* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  background-color: #fefefe;
  color: #222;
}
.hero {
  background: linear-gradient(to bottom right, #0d1b2a, #1b263b);
  color: white;
  text-align: center;
  padding: 80px 20px;
}
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}
.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
}
.hero-buttons .btn {
  margin: 0 10px;
}
.section {
  padding: 60px 20px;
  text-align: center;
}
.section h2 {
  margin-bottom: 20px;
  font-size: 2rem;
}
.grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 20px;
}
.card {
  background: #eee;
  padding: 20px;
  width: 200px;
  border-radius: 8px;
}
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #0d1b2a;
  color: white;
  text-decoration: none;
  border-radius: 5px;
}
.btn.secondary {
  background: #778da9;
}
.dark {
  background-color: #f0f0f0;
}
.forum-list {
  list-style: none;
  margin: 20px 0;
}
.forum-list li {
  margin: 10px 0;
}
.signup input[type="email"] {
  padding: 10px;
  width: 60%;
  margin: 10px 0;
}
.signup button {
  margin-top: 10px;
}
.footer {
  background: #1b263b;
  color: white;
  text-align: center;
  padding: 20px;
}
.footer nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}