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

:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e5e7eb;
  --max-width: 720px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

nav a:hover {
  color: var(--accent);
}

/* Main */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 6rem 2rem;
  width: 100%;
}

main h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

main > p {
  font-size: 1.25rem;
  color: var(--muted);
}

/* Prose (privacy page) */
.prose h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.prose h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
}

.prose p {
  color: var(--muted);
  margin-bottom: 1rem;
}

.prose a {
  color: var(--accent);
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}