body {
  font-family: "Segoe UI", sans-serif;
  background-color: #f8f9fc;
  margin: 0;
  padding: 2rem;
}
h1 {
  color: #2d3748;
  margin-bottom: 0.5rem;
}
p.description {
  color: #4a5568;
  margin-bottom: 2rem;
}
.challenge-list {
  display: grid;
  gap: 1.2rem;
}
.challenge {
  background: white;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: 0.3s ease;
}
.challenge:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}
.challenge-title {
  font-weight: 600;
  color: #2b6cb0;
  margin-bottom: 0.4rem;
}
.challenge-desc {
  color: #718096;
  font-size: 0.95rem;
}
.explorebtn {
  margin-top: 0.5rem;
  padding: 0.3rem 0.8rem;
  background-color: #0778f1;
  color: white;
  border-radius: 8px;
  text-align: right;
  cursor: pointer;
  transition: background-color 0.3s ease;
  font-size: 0.92rem;
  float: right;
}
.explorebtn:hover {
  background-color: #034081;
}