body {
  font-family: Arial, sans-serif;
  background-color: #f8f8f8;
  color: #222;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}
header {
  text-align: center;
  padding: 2rem 1rem;
  background-color: #fff;
  border-bottom: 1px solid #ddd;
}
header h1 {
  margin: 0.5rem 0;
}
header p {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.1rem;
}
main {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1rem;
}
h2 {
  border-bottom: 2px solid #ddd;
  padding-bottom: 0.3rem;
  margin-top: 2rem;
}
pre {
  background: #eee;
  padding: 1rem;
  overflow-x: auto;
}
a {
  color: #007bff;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
.showcase {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin: 2rem 0;
}
video {
  width: 100%;
  max-width: 800px;
  border: 1px solid #ccc;
  border-radius: 4px;
}