:root{--bg:#fff;--surface:#f5f7fa;--text:#171a1f;--label:#4c545f;--accent:#3f6493;--line:#e2e6ec;--size-average:64px;--size-body:15px;--size-label:13px;--size-axis:11px;--tap:48px;--chart-height:220px;--radius:14px}@media (prefers-color-scheme:dark){:root{--bg:#14171c;--surface:#1e232b;--text:#f1f3f6;--label:#bac2cd;--accent:#8fb3dd;--line:#2c333d}}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Hiragino Sans,Noto Sans JP,sans-serif;font-size:var(--size-body);-webkit-font-smoothing:antialiased;margin:0;line-height:1.6}.num{font-variant-numeric:tabular-nums}button{min-height:var(--tap);min-width:var(--tap);font-family:inherit;font-size:inherit;color:inherit;cursor:pointer}button:disabled{opacity:.35;cursor:default}