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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 4rem 1rem;
}

.container {
  max-width: 640px;
  width: 100%;
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.subtitle {
  color: #94a3b8;
  margin-bottom: 2rem;
}

.card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: #38bdf8;
}

code {
  background: #334155;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

ul {
  list-style: none;
  padding: 0;
}

ul li {
  padding: 0.35rem 0;
  padding-left: 1.25rem;
  position: relative;
}

ul li::before {
  content: "\2022";
  color: #38bdf8;
  position: absolute;
  left: 0;
}

strong {
  color: #f8fafc;
}