:root { --bg: #f8fafc; --fg: #0f172a; --muted: #475569; --card: #fff; --border: #e2e8f0; --brand: #2f55d4; --code: #f1f5f9; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #020617; --fg: #f1f5f9; --muted: #94a3b8; --card: #0f172a; --border: #1e293b; --brand: #5b7cf0; --code: #1e293b; }
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 16px; background: var(--bg); color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { width: 100%; max-width: 520px; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 20px; margin-bottom: 24px; }
.logo img { width: 32px; height: 32px; }
h1 { font-size: 18px; margin: 0 0 8px; }
p, li { color: var(--muted); }
ol { padding-left: 20px; }
code { display: block; background: var(--code); border-radius: 8px; padding: 10px 12px; font-size: 12px; word-break: break-all; color: var(--fg); }
button { margin-top: 12px; width: 100%; border: 0; border-radius: 8px; padding: 10px 16px; background: var(--brand); color: #fff; font-weight: 500; font-size: 14px; cursor: pointer; }