:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1a2332;
  --muted: #5c6b7a;
  --accent: #005eb8;
  --border: #d8e0ea;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
}

.header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  color: var(--accent);
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.card {
  max-width: 36rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(26, 35, 50, 0.06);
}

.card code {
  font-size: 0.9em;
  background: var(--bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.hint {
  color: var(--muted);
  font-size: 0.95rem;
}

.footer {
  margin-top: auto;
  padding-top: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
}