:root {
  color-scheme: dark;
  --bg: #0b0f14;
  --card: #121820;
  --line: #243040;
  --text: #e8eef4;
  --muted: #9aa8b6;
  --accent: #30e699;
  --accent-ink: #06281a;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: radial-gradient(1200px 600px at 50% -10%, #16202b 0%, var(--bg) 60%);
  color: var(--text);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Helvetica, Arial, sans-serif;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}
.card {
  width: 100%;
  max-width: 560px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .45);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text); text-decoration: none; font-weight: 600; letter-spacing: .01em;
  margin-bottom: 28px;
}
.eyebrow {
  margin: 0 0 6px; font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent);
}
h1 { margin: 0 0 12px; font-size: 26px; line-height: 1.2; font-weight: 700; letter-spacing: -.01em; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.key {
  margin: 20px 0 16px;
  padding: 14px 16px;
  background: #0d1218;
  border: 1px solid var(--line);
  border-radius: 12px;
  font: 14px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
  word-break: break-all;
  user-select: all;
}
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.button {
  appearance: none; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 18px; border-radius: 11px;
  border: 1px solid var(--line); background: #182231; color: var(--text);
  font: inherit; font-weight: 600; text-decoration: none;
}
.button:hover { border-color: #33455a; }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button.primary:hover { filter: brightness(1.05); }
.steps { font-size: 14px; }
.hero { text-align: center; padding: 8px 0 4px; }
.hero h1 { font-size: 34px; }
.hero .actions { justify-content: center; }