:root {
  --bg: #f6f7f9; --card: #ffffff; --ink: #16191d; --muted: #5f6b7a; --line: #dfe3e8;
  --accent: #1f5fd1; --accent-ink: #ffffff; --series: #1f5fd1;
  --good-bg: #dff3e6; --good-ink: #17603a; --bad-bg: #fbe1e1; --bad-ink: #9b1c1c; --busy-bg: #fdf0cf; --busy-ink: #7a5200;
  --code: #eef1f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418; --card: #1a1f25; --ink: #e8ebef; --muted: #9aa5b3; --line: #2c333c;
    --accent: #6ea0ff; --accent-ink: #0c1117; --series: #3987e5;
    --good-bg: #173a27; --good-ink: #8fdcaa; --bad-bg: #4a1c1c; --bad-ink: #ffb0b0; --busy-bg: #42340f; --busy-ink: #f3cf73;
    --code: #232a32;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
header { display: flex; justify-content: space-between; align-items: center; padding: 12px 24px; background: var(--card); border-bottom: 1px solid var(--line); }
header form { display: flex; gap: 12px; align-items: center; margin: 0; }
.brand { font-weight: 700; font-size: 17px; color: var(--ink); text-decoration: none; }
.who { color: var(--muted); }
main { max-width: 980px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 26px; margin: 8px 0 12px; }
h2 { font-size: 18px; margin: 0 0 6px; }
.titlebar { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.crumbs, .meta, .hint, .muted, small { color: var(--muted); }
.crumbs { margin: 0; }
.hint { margin: 0 0 12px; font-size: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin: 16px 0; overflow-x: auto; }
.card.narrow { max-width: 420px; margin: 48px auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px 9px 0; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 13px; color: var(--muted); font-weight: 600; }
tbody tr:last-child td { border-bottom: 0; }
td.right { text-align: right; padding-right: 0; white-space: nowrap; }
td form { margin: 0; display: inline; }
code { background: var(--code); border-radius: 4px; padding: 1px 5px; font: 13px ui-monospace, SFMono-Regular, Menlo, monospace; word-break: break-all; }
.badge { display: inline-block; border-radius: 999px; padding: 1px 10px; font-size: 13px; font-weight: 600; vertical-align: middle; }
.good { background: var(--good-bg); color: var(--good-ink); }
.bad { background: var(--bad-bg); color: var(--bad-ink); }
.busy { background: var(--busy-bg); color: var(--busy-ink); }
.flash { border-radius: 8px; padding: 10px 14px; margin: 0 0 12px; }
.row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; margin-top: 14px; }
.row label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); font-weight: 600; }
.row .grow { flex: 1 1 220px; }
input, select { font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 7px; padding: 7px 10px; min-width: 0; }
button, .button { font: inherit; font-weight: 600; cursor: pointer; background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent); border-radius: 7px; padding: 7px 14px; text-decoration: none; display: inline-block; }
button.quiet { background: transparent; color: var(--accent); border-color: var(--line); font-weight: 500; }
button.danger { color: var(--bad-ink); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
pre { background: #0f1317; color: #dfe6ee; border-radius: 10px; padding: 16px; overflow: auto; font: 13px/1.45 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; word-break: break-word; min-height: 200px; }
h3 { font-size: 15px; margin: 16px 0 6px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 8px 0 0; }
.facts dt { color: var(--muted); font-size: 13px; font-weight: 600; padding-top: 2px; }
.facts dd { margin: 0; }
fieldset { border: 1px solid var(--line); border-radius: 8px; margin: 0 0 14px; padding: 10px 14px; }
legend { font-size: 13px; font-weight: 600; color: var(--muted); padding: 0 6px; }
.choice { display: block; padding: 5px 0; }
ul { margin: 6px 0 12px; padding-left: 20px; }
li { margin: 3px 0; }
.card pre { min-height: 0; margin: 10px 0; }
th.right { text-align: right; padding-right: 0; }
td.right + td.right, th.right + th.right { padding-left: 16px; }
.navlink { font-weight: 600; }
.choice > input { position: absolute; opacity: 0; }
.choice > label { display: inline-block; padding: 6px 14px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; font-weight: 600; font-size: 14px; margin-right: 6px; }
.choice > input:checked + label { background: var(--accent); border-color: var(--accent); color: #fff; }
.choice > input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 2px; }
.choice .option { display: none; }
#via-https:checked ~ .option.https, #via-ssh:checked ~ .option.ssh { display: block; }
.tiles { display: flex; gap: 28px; flex-wrap: wrap; margin: 4px 0 12px; }
.tile { display: flex; flex-direction: column; }
.tile-label { font-size: 13px; color: var(--muted); font-weight: 600; }
.tile-value { font-size: 30px; font-weight: 700; line-height: 1.25; }
.tile-value.small { font-size: 20px; line-height: 1.9; }
/* Charts: one series in --series; text in text colours, never the series colour. */
.viz { width: 100%; max-width: 720px; height: auto; display: block; }
.viz-grid { stroke: var(--line); stroke-width: 1; }
.viz-axis { fill: var(--muted); font-size: 12px; }
.viz-label { fill: var(--ink); font-size: 13px; font-weight: 600; }
.viz-line { fill: none; stroke: var(--series); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.viz-forecast { stroke-dasharray: 2 6; opacity: 0.75; }
.viz-dot { fill: var(--series); stroke: var(--card); stroke-width: 2; }
.viz-dot-open { fill: var(--card); stroke: var(--series); }
.viz-hit { fill: transparent; }
.viz-hit:hover { fill: var(--ink); opacity: 0.06; }
textarea { font: 13px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--ink); width: 100%; box-sizing: border-box; }