body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background: #F7F9FC;
  color: #222;
}

header {
  background: #007ACC;
  color: white;
  padding: 10px 20px;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .logo {
  font-weight: 600;
  font-size: 20px;
}

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

nav .menu li a {
  color: white;
  text-decoration: none;
  font-weight: 500;
}

nav .menu li a:hover {
  color: #FFD700;
}

.hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(to right, #007ACC, #005f99);
  color: white;
}

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

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

.cta {
  background: #FFD700;
  color: #222;
  padding: 12px 24px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
}

.cta:hover {
  background: #e6c200;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  padding: 40px 20px;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-5px);
}

footer {
  text-align: center;
  padding: 20px;
  background: #222;
  color: #ccc;
  font-size: 14px;
}

.navigation {
  display: flex;
  justify-content: space-between;
  margin: 40px 0;
}

.navigation .btn {
  background: #007ACC;
  color: white;
  padding: 10px 18px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.2s;
}

.navigation .btn:hover {
  background: #005f99;
}

.navigation .next {
  background: #28a745; /* hijau untuk next */
}

.navigation .next:hover {
  background: #1e7e34;
}