body {
  font-family: sans-serif;
  margin: 0;
  background: white;
  color: #1f2937;
  line-height: 1.6;
}
header {
  background: #9333ea;
  color: white;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 1rem;
  margin: 1rem auto;
  max-width: 1200px;
}
nav a {
  margin-left: 1rem;
  color: white;
  text-decoration: none;
}
nav a:hover {
  text-decoration: underline;
}
nav select {
  background-color: #9333ea;
  color: white;
  border: none;
  border-radius: 0.375rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.875rem;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%204%205'%3E%3Cpath%20fill='white'%20d='M2%200L0%202h4zm0%205L0%203h4z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 0.65rem auto;
  cursor: pointer;
}
nav select:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(147, 51, 234, 0.4);
}
.container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.card {
  border: 1px solid #ddd;
  border-radius: 1rem;
  padding: 1rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}
.cta {
  background: #f3e8ff;
  padding: 2rem;
  border-radius: 1rem;
  text-align: center;
}
input[type=email] {
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 0.375rem;
}
button {
  padding: 0.5rem 1rem;
  background: #9333ea;
  color: white;
  border: none;
  border-radius: 0.375rem;
  margin-left: 0.5rem;
  cursor: pointer;
}
footer {
  text-align: center;
  color: #6b7280;
  font-size: 0.875rem;
  margin-top: 3rem;
  padding-bottom: 2rem;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
  }

  nav select {
    align-self: flex-end;
    margin-top: 0.5rem;
  }
}