:root {
  --bg: #f6f7f9;
  --card: #fff;
  --text: #1c2024;
  --muted: #646b73;
  --border: #dde1e6;
  --accent: #1a5fd0;
  --danger: #b42318;
  --ok: #157f3c;
  --warn-bg: #fff6e0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111315;
    --card: #1a1d20;
    --text: #e8eaed;
    --muted: #9aa1a8;
    --border: #2d3237;
    --accent: #6ea2ff;
    --danger: #ff7b6e;
    --ok: #5fd08b;
    --warn-bg: #3a2f12;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
header { display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; border-bottom: 1px solid var(--border); background: var(--card); }
.brand { font-weight: 600; color: var(--text); text-decoration: none; }
main { max-width: 960px; margin: 24px auto; padding: 0 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 20px 24px; margin-bottom: 16px; overflow-x: auto; }
.narrow { max-width: 560px; margin-left: auto; margin-right: auto; }
h1 { font-size: 22px; margin-top: 0; }
h2 { font-size: 17px; margin-top: 0; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono, code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.error { color: var(--danger); }
.warn { background: var(--warn-bg); padding: 10px 12px; border-radius: 6px; }
.services { list-style: none; padding: 0; }
.services li::before { content: "● "; }
.services .ok::before { color: var(--ok); }
.services .missing::before { color: var(--danger); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
input, select { font: inherit; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); }
input[readonly] { width: 100%; }
label { display: block; font-weight: 600; margin-bottom: 4px; }
button, .button { font: inherit; display: inline-block; padding: 6px 14px; border-radius: 6px; border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; text-decoration: none; }
button.secondary { background: transparent; color: var(--text); border-color: var(--border); }
button.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
button.link { background: none; border: none; color: var(--accent); padding: 0; }
form.inline { display: inline; margin: 0; }
form.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }