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

:root {
  --color-primary: #ff6b35;
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #666666;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  font-size: 3rem;
  color: var(--color-primary);
  line-height: 1.1;
}

header p {
  margin-top: 0.75rem;
  color: var(--color-muted);
  font-size: 1.125rem;
}

main {
  width: 100%;
  max-width: 480px;
}

.card {
  background: #f9f9f9;
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  text-align: center;
}

.card p {
  color: var(--color-muted);
  line-height: 1.6;
}

footer {
  margin-top: 3rem;
  font-size: 0.875rem;
  color: var(--color-muted);
}