:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}
.wrap { max-width: 640px; margin: 0 auto; padding: 3rem 1.5rem; }
.lead { font-size: 1.05rem; }
.muted { color: #6b7280; font-size: 0.9rem; }
.boxes { list-style: none; padding: 0; }
.boxes li { margin: 0.5rem 0; }
.boxes a { display: inline-block; padding: 0.6rem 1rem; border: 1px solid #d1d5db; border-radius: 8px; text-decoration: none; }
form label { display: block; margin: 1rem 0; font-weight: 600; }
form input { display: block; width: 100%; margin-top: 0.35rem; padding: 0.6rem; border: 1px solid #d1d5db; border-radius: 8px; font: inherit; }
button { margin-top: 1rem; padding: 0.7rem 1.4rem; border: 0; border-radius: 8px; background: #2563eb; color: #fff; font: inherit; cursor: pointer; }
.err { display: block; color: #dc2626; font-weight: 400; font-size: 0.85rem; margin-top: 0.25rem; }
.confirmation { border: 1px solid #d1d5db; border-radius: 10px; padding: 1.25rem 1.5rem; }
.pin { font-size: 1.4rem; letter-spacing: 0.15em; }