:root {
  --bg: #f5f6f8; --panel: #fff; --ink: #18202b; --muted: #5f6b7a; --line: #dfe3e8;
  --brand: #0067B8; --brand-ink: #fff; --ok: #1d7a46; --ok-bg: #e7f5ec; --warn: #8a5a00; --warn-bg: #fff4dd;
  --bad: #b3261e; --bad-bg: #fdeceb; --chip: #eef1f5;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; font-size: 15px; color: var(--ink);
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #11151b; --panel: #1a2029; --ink: #e7ebf0; --muted: #9aa5b3; --line: #2c3440; --chip: #252d38;
    --ok-bg: #12301f; --ok: #6fd39b; --warn-bg: #352a10; --warn: #f0c060; --bad-bg: #3a1714; --bad: #ff8a80; --brand: #4ea3ea; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); }
a { color: var(--brand); }
h1 { font-size: 22px; margin: 0 0 12px; }
h2 { font-size: 17px; margin: 22px 0 10px; }
h3 { font-size: 15px; margin: 14px 0 6px; }
.pad { padding: 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
header.top { display: flex; align-items: center; gap: 14px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; flex-wrap: wrap; }
header.top .brand { font-weight: 700; color: var(--brand); white-space: nowrap; }
nav.tabs { display: flex; gap: 2px; flex-wrap: wrap; flex: 1; }
nav.tabs button { background: none; border: 0; padding: 8px 10px; border-radius: 6px; color: var(--muted); cursor: pointer; font: inherit; }
nav.tabs button.on { background: var(--chip); color: var(--ink); font-weight: 600; }
main { max-width: 1240px; margin: 0 auto; padding: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin-bottom: 12px; }
body.plain main.card { max-width: 520px; margin: 60px auto; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spread { justify-content: space-between; }
.stack > * + * { margin-top: 8px; }
button, .btn { font: inherit; border: 1px solid var(--line); background: var(--panel); color: var(--ink); padding: 6px 12px; border-radius: 7px; cursor: pointer; }
button.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
button.danger { border-color: var(--bad); color: var(--bad); }
button.danger.solid { background: var(--bad); color: #fff; }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea { font: inherit; color: var(--ink); background: var(--panel); border: 1px solid var(--line); border-radius: 7px; padding: 6px 8px; max-width: 100%; }
textarea { width: 100%; min-height: 90px; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
textarea.tall { min-height: 260px; }
label.f { display: block; margin: 6px 0; }
label.f > span { display: block; font-size: 12px; color: var(--muted); margin-bottom: 2px; }
label.f input:not([type=checkbox]), label.f select { width: 100%; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
tr.click { cursor: pointer; }
tr.click:hover td { background: var(--chip); }
.tablewrap { overflow-x: auto; }
.chip { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--chip); font-size: 12px; white-space: nowrap; }
.chip.ok { background: var(--ok-bg); color: var(--ok); }
.chip.warn { background: var(--warn-bg); color: var(--warn); }
.chip.bad { background: var(--bad-bg); color: var(--bad); }
.banner { padding: 10px 14px; border-radius: 9px; margin-bottom: 12px; }
.banner.bad { background: var(--bad-bg); color: var(--bad); border: 1px solid var(--bad); }
.banner.warn { background: var(--warn-bg); color: var(--warn); }
.banner.ok { background: var(--ok-bg); color: var(--ok); }
ul.problems { margin: 6px 0; padding-left: 18px; color: var(--bad); font-size: 13px; }
ul.warnings { margin: 6px 0; padding-left: 18px; color: var(--warn); font-size: 13px; }
pre.mail { white-space: pre-wrap; font-family: inherit; background: var(--chip); padding: 10px; border-radius: 8px; margin: 6px 0; font-size: 14px; }
.stat { font-size: 26px; font-weight: 700; }
.drawer-bg { position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 20; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(900px, 100%); background: var(--bg); z-index: 21; overflow-y: auto; padding: 16px; box-shadow: -6px 0 24px rgba(0,0,0,.2); }
.toast { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 8px; z-index: 50; max-width: min(640px, 92vw); }
.toast.bad { background: var(--bad); color: #fff; }
.facts .row input { flex: 1; min-width: 140px; }
.timeline li { margin-bottom: 4px; font-size: 13px; }
.w-100 { width: 100%; }
.hide { display: none; }
@media (max-width: 640px) {
  main { padding: 10px; }
  header.top { gap: 6px; }
  header.top .brand { flex: 1; }
  nav.tabs { order: 3; flex-basis: 100%; }
  nav.tabs button { padding: 6px 7px; font-size: 13px; }
}