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

html { 
  scroll-behavior: smooth; 
  font-family: Arial, sans-serif; 
}

body { 
  color: #333; 
  line-height: 1.6; 
}

.btn-primary, .btn-secondary {
  display: inline-block; 
  padding: 0.75rem 1.5rem; 
  margin: 0.5rem;
  text-decoration: none; 
  border-radius: 4px; 
  transition: background 0.3s;
}

.btn-primary { 
  background: #007bff; 
  color: #fff; 
}

.btn-primary:hover { 
  background: #0056b3; 
}

.btn-secondary { 
  background: #6c757d; 
  color: #fff; 
}

.btn-secondary:hover { 
  background: #5a6268; 
}

section { 
  padding: 4rem 1rem; 
  max-width: 800px; 
  margin: auto; 
}

#hero { 
  height: 100vh; 
  display: flex; 
  align-items: center; 
  justify-content: center; 
  text-align: center; 
  background: #f4f4f4; 
}

#hero h1 { 
  font-size: 2.5rem; 
  margin-bottom: 1rem; 
}

#hero .subhead { 
  font-size: 1.25rem; 
  margin-bottom: 2rem; 
}

#why ul { 
  list-style: none; 
  display: flex; 
  justify-content: space-around; 
  margin-top: 1.5rem; 
}

#why li { 
  text-align: center; 
  max-width: 150px; 
}

.icon-list i { 
  font-size: 2rem; 
  margin-bottom: 0.5rem; 
  display: block; 
}

.feature-cards { 
  display: flex; 
  flex-wrap: wrap; 
  justify-content: space-around; 
  gap: 1rem; 
  margin-top: 1.5rem; 
}

.feature-cards .card {
  flex: 1 1 200px; 
  padding: 1rem; 
  border: 1px solid #ddd; 
  border-radius: 6px; 
  text-align: center;
}

.feature-cards img { 
  width: 60px; 
  margin-bottom: 0.5rem; 
}

.steps { 
  display: flex; 
  flex-direction: column; 
  gap: 1rem; 
}

.step { 
  display: flex; 
  align-items: flex-start; 
}

.step-num {
  width: 2rem; 
  height: 2rem; 
  border-radius: 50%; 
  background: #007bff; 
  color: #fff;
  display: flex; 
  align-items: center; 
  justify-content: center; 
  margin-right: 1rem;
  flex-shrink: 0;
}

#community .btn-group a { 
  margin-right: 1rem; 
}

#get-started { 
  text-align: center; 
}

#get-started p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

#mission p {
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
  line-height: 1.7;
}

#mission p:last-child {
  margin-bottom: 0;
}

footer { 
  text-align: center; 
  padding: 2rem 1rem; 
  background: #f4f4f4; 
}

#fifth-element-icon { 
  cursor: pointer; 
  font-size: 1.5rem; 
}

header { 
  position: sticky; 
  top: 0; 
  background: #fff; 
  padding: 1rem; 
  text-align: right; 
  z-index: 100; 
  border-bottom: 1px solid #ddd; 
}

header a { 
  margin-left: 1rem; 
}

body.dark { 
  background: #222; 
  color: #eee; 
}

body.dark header, body.dark footer { 
  background: #333; 
}

body.dark .btn-primary { 
  background: #339af0; 
}