* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI',
    sans-serif;
  background: #0f172a;
  color: #e5e7eb;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

.section {
  margin-top: 32px;
}

.btn {
  display: block;
  margin: 0 auto;
  padding: 10px 20px;
  border-radius: 999px;
  border: none;
  background: #3b82f6;
  color: #fff;
  cursor: pointer;
  font-size: 16px;
}

.btn:hover {
  background: #2563eb;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.card {
  background: #020617;
  border: 1px solid #1f2937;
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-title {
  font-weight: 600;
  color: #f9fafb;
}

.card-body {
  font-size: 14px;
  color: #9ca3af;
}

.card button {
  margin-top: auto;
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid #3b82f6;
  background: transparent;
  color: #bfdbfe;
  cursor: pointer;
  font-size: 13px;
}

.card button:hover {
  background: #1d4ed8;
  color: #fff;
}