:root { --bg: #f7f7f5; --card: #fff; --text: #1c1917; --muted: #57534e; --line: #e7e5e4; --accent: #0f766e; --danger: #b91c1c; --ok: #15803d; color-scheme: light; }
@media (prefers-color-scheme: dark) { :root { --bg: #0c0a09; --card: #1c1917; --text: #f5f5f4; --muted: #a8a29e; --line: #292524; --accent: #2dd4bf; --danger: #f87171; --ok: #4ade80; color-scheme: dark; } }
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--card); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 600; color: inherit; text-decoration: none; }
nav { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
nav a { color: var(--muted); text-decoration: none; }
nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 8px; }
.lead { color: var(--muted); margin: 0 0 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 0; border-top: 1px solid var(--line); flex-wrap: wrap; }
.row:first-of-type { border-top: 0; }
.muted { color: var(--muted); font-size: 13px; }
.ok { color: var(--ok); }
button { font: inherit; border-radius: 8px; border: 1px solid var(--line); background: var(--card); color: var(--text); padding: 6px 12px; cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--danger); }
input { font: inherit; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--text); }
code { font-family: ui-monospace, monospace; word-break: break-all; }
.qr { width: 200px; height: 200px; background: #fff; padding: 4px; border-radius: 8px; }
.error { color: var(--danger); margin: 8px 0; }
.stack > * + * { margin-top: 8px; }