:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2330; --muted: #5d6677; --line: #dde1e8;
  --accent: #1f5fbf; --ok: #1b7a43; --warn: #a66300; --err: #b3261e; --demo: #6b3fa0;
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.top { background: #17202f; color: #fff; padding: 10px 16px; display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
header.top .brand { font-weight: 700; font-size: 17px; color: #fff; }
header.top nav { display: flex; flex-wrap: wrap; gap: 4px; flex: 1; }
header.top nav a { color: #d6deea; padding: 4px 8px; border-radius: 6px; }
header.top nav a.on, header.top nav a:hover { background: #2c3a52; color: #fff; text-decoration: none; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: #e7ebf2; color: #34405a; white-space: nowrap; }
.badge.ok { background: #dff3e7; color: var(--ok); } .badge.warn { background: #fdf0d9; color: var(--warn); }
.badge.err { background: #fbe1df; color: var(--err); } .badge.demo { background: #efe5fa; color: var(--demo); }
.badge.mode { background: #2c3a52; color: #fff; }
.banner { padding: 10px 16px; font-weight: 600; }
.banner.demo { background: var(--demo); color: #fff; }
.banner.kill { background: var(--err); color: #fff; }
.banner.warn { background: #fdf0d9; color: var(--warn); }
main { max-width: 1250px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin: 4px 0 14px; } h2 { font-size: 18px; margin: 22px 0 10px; } h3 { font-size: 16px; margin: 14px 0 6px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin-bottom: 14px; }
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.grid2 { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.stat .n { font-size: 26px; font-weight: 700; } .stat .l { color: var(--muted); font-size: 13px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--card); }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 14px; }
th { background: #eef1f6; font-weight: 600; white-space: nowrap; }
.muted { color: var(--muted); font-size: 13px; }
.flash { padding: 9px 14px; border-radius: 8px; margin-bottom: 10px; }
.flash.ok { background: #dff3e7; } .flash.err { background: #fbe1df; } .flash.warn { background: #fdf0d9; }
form.inline { display: inline; }
form.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; margin: 6px 0; }
label { display: flex; flex-direction: column; font-size: 13px; color: var(--muted); gap: 2px; }
input, select, textarea { font: inherit; padding: 6px 8px; border: 1px solid #c4cad6; border-radius: 6px; background: #fff; color: var(--text); max-width: 100%; }
textarea { width: 100%; min-height: 320px; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
button { font: inherit; padding: 6px 12px; border-radius: 6px; border: 1px solid #b8c0cf; background: #fff; cursor: pointer; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { background: var(--err); border-color: var(--err); color: #fff; }
button:hover { filter: brightness(0.95); }
pre.mail { white-space: pre-wrap; background: #fbfbfd; border: 1px solid var(--line); padding: 12px; border-radius: 8px; font-size: 13px; }
ul.rules { list-style: none; padding: 0; margin: 0; } ul.rules li { padding: 3px 0; font-size: 13px; }
.pass::before { content: "✔ "; color: var(--ok); } .fail::before { content: "✖ "; color: var(--err); }
.alert-item { border-left: 4px solid var(--warn); padding: 8px 12px; margin-bottom: 8px; background: var(--card); border-radius: 6px; }
.alert-item.critical { border-color: var(--err); } .alert-item.info { border-color: var(--accent); }
dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0; }
dl.kv dt { color: var(--muted); } dl.kv dd { margin: 0; }
footer { text-align: center; color: var(--muted); font-size: 12px; padding: 20px; }
@media (max-width: 640px) {
  main { padding: 10px; } h1 { font-size: 19px; }
  th, td { font-size: 13px; padding: 6px; }
  dl.kv { grid-template-columns: 1fr; }
}