:root {
  --bg: #0b1021;
  --fg: #e6e9f2;
  --muted: #8089a5;
  --accent: #7c9cff;
  --card: #141a33;
  --border: #22294a;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  min-height: 100vh;
}

.brand {
  padding: 24px 32px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.brand-name { font-weight: 700; letter-spacing: 0.04em; }
.brand-sub { color: var(--muted); font-size: 0.9rem; }

.card {
  max-width: 640px;
  margin: 48px auto;
  padding: 32px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
}

h1 { margin-top: 0; font-size: 1.6rem; }

p.hint { color: var(--muted); font-size: 0.95rem; }

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

code {
  font-family: var(--mono);
  background: rgba(124, 156, 255, 0.08);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

code.dim {
  display: block;
  margin-top: 24px;
  color: var(--muted);
  background: transparent;
  font-size: 0.8rem;
  word-break: break-all;
}