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

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: linear-gradient(160deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  color: #e2e8f0;
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.badge {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #38bdf8;
  margin-bottom: 0.75rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.subtitle {
  font-size: 1.125rem;
  color: #94a3b8;
  margin-bottom: 2.5rem;
}

.card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.card h2 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.card p {
  color: #cbd5e1;
}

.card ul.list {
  margin-top: 0.75rem;
  padding-left: 1.25rem;
  color: #cbd5e1;
}

.card ul.list li {
  margin-bottom: 0.35rem;
}

.card code {
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.08);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.card a {
  color: #38bdf8;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.btn {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #e2e8f0;
  transition: background 0.2s, transform 0.15s;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

.btn.primary {
  background: #38bdf8;
  border-color: #38bdf8;
  color: #0f172a;
}

.btn.primary:hover {
  background: #7dd3fc;
}

footer {
  text-align: center;
  font-size: 0.875rem;
  color: #64748b;
}

footer a {
  color: #94a3b8;
}