:root {
  --bg: #121212;
  --primary: #1f1f1f;
  --accent: #bb86fc;
  --text-light: #e0e0e0;
  --text-muted: #888;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text-light);
  line-height: 1.6;
}
header {
  background: var(--primary);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
header .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--accent);
}
nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
}
nav a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 1rem;
  transition: color .3s;
}
nav a:hover {
  color: var(--accent);
}
.hero {
  padding: 4rem 2rem;
  text-align: center;
}
.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  padding: 2rem;
}
.feature {
  background: var(--primary);
  padding: 1.5rem;
  border-radius: 8px;
  text-align: center;
}
.feature h3 {
  margin-bottom: .5rem;
  color: var(--accent);
}
.feature p {
  color: var(--text-muted);
}
.footer {
  text-align: center;
  padding: 2rem;
  font-size: .9rem;
  color: var(--text-muted);
}