:root {
  --bg: #f6f7f9; --fg: #1d2330; --muted: #5b6577; --line: #d6dbe3; --panel: #fff;
  --alert: #b3261e; --alert-bg: #fdecea; --warn: #8a5a00; --warn-bg: #fff4dc; --accent: #1f5fbf;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 14px/1.5 "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif; }
header { position: sticky; top: 0; z-index: 1; display: flex; flex-wrap: wrap; gap: 8px 24px;
  align-items: center; justify-content: space-between; padding: 10px 20px;
  background: var(--panel); border-bottom: 1px solid var(--line); }
h1 { margin: 0; font-size: 18px; }
h1 small { font-size: 12px; font-weight: normal; color: var(--muted); border: 1px solid var(--line);
  border-radius: 4px; padding: 1px 6px; margin-left: 6px; }
h2 { font-size: 16px; margin: 24px 0 8px; }
h3 { font-size: 14px; margin: 0 0 6px; }
main { padding: 0 20px 40px; max-width: 1600px; margin: 0 auto; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; color: var(--muted); }
button { font: inherit; padding: 4px 12px; border: 1px solid var(--accent); border-radius: 4px;
  background: var(--panel); color: var(--accent); cursor: pointer; }
button:hover:not(:disabled) { background: #eaf1fb; }
button:disabled { opacity: .5; cursor: wait; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.notice { margin-top: 16px; padding: 10px 14px; background: var(--warn-bg); border: 1px solid #e8cf96;
  border-radius: 6px; color: #4d3800; }
.notice p { margin: 2px 0; }
.error { padding: 8px 12px; background: var(--alert-bg); color: var(--alert); border: 1px solid #f1b8b3; border-radius: 6px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; }
.card .k { color: var(--muted); font-size: 12px; }
.card .v { font-size: 20px; font-weight: 600; overflow-wrap: break-word; }
.card .sub { color: var(--muted); font-size: 12px; }
.card.alert { border-color: var(--alert); background: var(--alert-bg); }
.card.alert .v { color: var(--alert); }
.card.stale { border-color: #e8cf96; background: var(--warn-bg); }
.card.stale .sub { color: var(--warn); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 10px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 10px; overflow-x: auto; }
.scroll { overflow-x: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; }
table { border-collapse: collapse; width: 100%; }
th, td { padding: 5px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; white-space: nowrap; }
th { background: #eef1f5; font-weight: 600; font-size: 13px; }
tbody tr:hover { background: #f3f6fb; }
tr.alert td { background: var(--alert-bg); color: var(--alert); }
td.empty { color: var(--muted); text-align: center; }
td span[title] { text-decoration: underline dotted; cursor: help; }
.filters { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: end; margin-bottom: 8px; }
.filters label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); }
.filters input, .filters select { font: inherit; padding: 3px 6px; border: 1px solid var(--line); border-radius: 4px;
  min-width: 140px; color: var(--fg); background: var(--panel); }
.filters input:invalid { border-color: var(--alert); }
.more { text-align: center; }
/* admin console additions */
.login { max-width: 360px; margin: 48px auto; padding: 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
.login form { display: flex; flex-direction: column; gap: 12px; }
.login label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.login input { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 4px; color: var(--fg); }
#error { margin: 12px 20px 0; }
nav { display: flex; gap: 6px; padding: 10px 20px 0; flex-wrap: wrap; }
nav button[aria-pressed="true"] { background: var(--accent); color: #fff; }
/* behaviour reading (ui v2) */
.headline { margin: 16px 0 10px; padding: 12px 16px; border-radius: 6px; border: 1px solid var(--line); background: var(--panel); font-size: 15px; }
.headline strong { margin-right: 6px; }
.headline.lv-ok { border-color: #9cc9a8; background: #eef8f0; }
.headline.lv-warn { border-color: #e8cf96; background: var(--warn-bg); }
.headline.lv-high { border-color: #f1b8b3; background: var(--alert-bg); color: var(--alert); }
.badge { display: inline-block; padding: 0 8px; border-radius: 10px; font-size: 12px; line-height: 20px; white-space: nowrap; border: 1px solid transparent; }
.badge.lv-sys { color: #4a5568; background: #edf0f4; border-color: #d6dbe3; }
.badge.lv-ok { color: #1d6b34; background: #e6f4ea; border-color: #9cc9a8; }
.badge.lv-warn { color: #6b4500; background: #fff1cc; border-color: #e8cf96; }
.badge.lv-high { color: #fff; background: var(--alert); border-color: var(--alert); }
tr.warn td { background: #fffaf0; }
tr.sys td { color: var(--muted); }
.what { display: flex; flex-direction: column; min-width: 260px; max-width: 520px; white-space: normal; cursor: help; }
.what .title { font-weight: 600; }
.what .meaning, .muted, .hint { color: var(--muted); font-size: 12px; }
.wrap { white-space: normal; min-width: 180px; max-width: 420px; }
.ips { display: flex; flex-direction: column; gap: 4px; }
.ip { display: flex; flex-direction: column; }
.ip .region { color: var(--muted); font-size: 12px; }
.pending { text-decoration: underline dotted; cursor: help; }
.gid { font-weight: 600; }
.legend { margin: 16px 0; }
.legend summary { cursor: pointer; font-weight: 600; margin-bottom: 6px; }
.chip { display: inline-flex; gap: 8px; align-items: center; padding: 4px 10px; background: #eaf1fb; border: 1px solid #b9cdee; border-radius: 16px; }
.hint { margin: 6px 0 0; }