body { font-family: system-ui, -apple-system, 'Segoe UI', sans-serif; margin: 0; color: #111827; background: #f8fafc; line-height: 1.7; }
  main { max-width: 760px; margin: 0 auto; padding: 48px 20px; }
  h1 { font-size: 30px; }
  .tag { color: #2563eb; font-weight: 600; letter-spacing: .05em; }
  .cta { display: inline-block; background: #2563eb; color: #fff; padding: 12px 28px; border-radius: 8px; text-decoration: none; font-weight: 600; margin-top: 8px; }
  .cta:hover { background: #1d4ed8; }
  ul li { margin: 8px 0; }
  .note { color: #6b7280; font-size: 13px; }