:root {
  --bg: #f6f8fb;
  --text: #1a1a2e;
  --accent: #2563eb;
  --border: #d1d5db;
}

* {
  box-sizing: border-box;
}

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

.site-header,
.site-footer {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  border-bottom: none;
  margin-top: 2rem;
}

.site-nav a {
  margin-right: 1rem;
  color: var(--accent);
  text-decoration: none;
}

.site-nav a:hover {
  text-decoration: underline;
}

main {
  max-width: 48rem;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.pretest-banner {
  background: #eef2ff;
  border: 1px solid #c7d2fe;
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.pretest-ok {
  color: #166534;
}

.pretest-error {
  color: #b91c1c;
}

.logo-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-row img {
  width: 32px;
  height: 32px;
}