:root {
  --bg: #fbfaf8; --fg: #1f1e1c; --muted: #6b6862; --line: #e4e1db; --card: #ffffff;
  --accent: #2f6db3; --band: rgba(47,109,179,0.15); --anchor: #c2410c; --good: #2e7d32; --bad: #b3261e;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #171716; --fg: #ecebe8; --muted: #a29f98; --line: #34332f; --card: #201f1d;
    --accent: #6ea8ec; --band: rgba(110,168,236,0.18); --anchor: #f08a4b; --good: #6cc070; --bad: #f28b82;
  }
}
:root[data-theme="dark"] {
  --bg: #171716; --fg: #ecebe8; --muted: #a29f98; --line: #34332f; --card: #201f1d;
  --accent: #6ea8ec; --band: rgba(110,168,236,0.18); --anchor: #f08a4b; --good: #6cc070; --bad: #f28b82;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
header { padding: 16px; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; }
h1 { font-size: 18px; margin: 0; }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav button { background: none; border: 1px solid transparent; color: var(--muted); padding: 6px 12px; border-radius: 8px; cursor: pointer; font: inherit; }
nav button[aria-selected="true"] { color: var(--fg); border-color: var(--line); background: var(--card); }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
.controls { margin-bottom: 12px; }
select { font: inherit; padding: 4px 8px; border-radius: 6px; border: 1px solid var(--line); background: var(--card); color: var(--fg); }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; display: flex; flex-direction: column; }
.tile .label { color: var(--muted); font-size: 13px; }
.tile .value { font-size: 26px; font-weight: 600; font-variant-numeric: tabular-nums; }
.tile .sub { color: var(--muted); font-size: 13px; }
.chart { width: 100%; height: 340px; }
.chart.tall { height: 440px; }
.chart.short { height: 220px; }
.note { color: var(--muted); font-size: 13px; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; }
.ok { color: var(--good); } .stale { color: var(--bad); }
a { color: var(--accent); }
@media (max-width: 600px) { .chart.tall { height: 340px; } .tile .value { font-size: 22px; } }