:root {
  --primary-color: #0066cc;
  --text-color: #333;
  --background-color: #f9f9f9;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Segoe UI', Tahoma, Arial, sans-serif;
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
}
header {
  background: var(--primary-color);
  color: #fff;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header h1 {
  margin: 0;
  font-size: 1.5rem;
}
nav a {
  color: #fff;
  margin-left: 1rem;
  text-decoration: none;
}
nav a:hover {
  text-decoration: underline;
}
main {
  padding: 2rem;
  max-width: 800px;
  margin: 0 auto;
}
footer {
  background: var(--primary-color);
  color: #fff;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}
.hero {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, #007bff, #00d4ff);
  color: #fff;
}
.hero h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.2rem;
}
.features {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 2rem;
}
.feature {
  flex: 1 1 250px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  padding: 1.5rem;
}
.cta {
  text-align: center;
  margin-top: 3rem;
}
.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--primary-color);
  color: #fff;
  border-radius: 4px;
  text-decoration: none;
  font-weight: bold;
}
.button:hover {
  background: #005bb5;
}