:root {
  --primary: #3498db;
  --secondary: #2ecc71;
  --dark: #333;
  --light: #f8f9fa;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark);
}
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}
h1,
h2,
h3 {
  margin-bottom: 1rem;
}
p {
  margin-bottom: 1.5rem;
}
a {
  color: var(--primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 4px;
}
.btn:hover {
  background: #2980b9;
  color: white;
  text-decoration: none;
}
img {
  max-width: 100%;
  height: auto;
}
.card {
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
@media (max-width: 768px) {
  .container {
    width: 95%;
  }
}
.text-center {
  text-align: center;
}
.mt-2 {
  margin-top: 2rem;
}