:root {
  color-scheme: dark;
  --bg: #0f0d0c;
  --fg: #f5efe8;
  --muted: #a89c90;
  --accent: #f0a35e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  padding: 24px 16px;
}
.page { max-width: 420px; text-align: center; }
.brand { letter-spacing: .2em; text-transform: uppercase; font-size: 12px; color: var(--muted); }
h1 { font-size: 26px; line-height: 1.2; margin: 8px 0 12px; }
p { color: var(--muted); }
.btn {
  display: inline-block;
  margin-top: 16px;
  padding: 12px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: #1b1209;
  font-weight: 600;
  text-decoration: none;
}
.code-form { display: grid; gap: 12px; margin-top: 20px; }
.code-form input {
  width: 100%; padding: 14px; border-radius: 16px; border: 1px solid #3a332d; background: #1a1715; color: var(--fg);
  font: 700 40px/1 ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .4em; text-align: center; outline: none;
}
.code-form input:focus { border-color: var(--accent); }
.code-form .btn { margin-top: 0; border: 0; font-size: 17px; cursor: pointer; }
.error { color: #ff8a7a; font-weight: 600; }
.links { margin-top: 28px; }
.link { color: var(--accent); }