:root{
  color-scheme: light;
  --page:#f9f9f7; --surface:#fcfcfb; --ink:#0b0b0b; --ink-2:#52514e; --muted:#898781;
  --grid:#e1e0d9; --axis:#c3c2b7; --ring:rgba(11,11,11,0.10); --wash:rgba(11,11,11,0.04);
  --s-blue:#2a78d6; --s-orange:#eb6834; --s-aqua:#1baf7a; --s-violet:#4a3aa7; --s-green:#008300;
  --sans:system-ui,-apple-system,"Segoe UI",sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme: dark;
    --page:#0d0d0d; --surface:#1a1a19; --ink:#ffffff; --ink-2:#c3c2b7; --muted:#898781;
    --grid:#2c2c2a; --axis:#383835; --ring:rgba(255,255,255,0.10); --wash:rgba(255,255,255,0.05);
    --s-blue:#3987e5; --s-orange:#d95926; --s-aqua:#199e70; --s-violet:#9085e9; --s-green:#008300;
  }
}
:root[data-theme="dark"]{
  color-scheme: dark;
  --page:#0d0d0d; --surface:#1a1a19; --ink:#ffffff; --ink-2:#c3c2b7; --muted:#898781;
  --grid:#2c2c2a; --axis:#383835; --ring:rgba(255,255,255,0.10); --wash:rgba(255,255,255,0.05);
  --s-blue:#3987e5; --s-orange:#d95926; --s-aqua:#199e70; --s-violet:#9085e9; --s-green:#008300;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--page);color:var(--ink);font:16px/1.55 var(--sans);-webkit-font-smoothing:antialiased}
.wrap{max-width:1180px;margin:0 auto;padding:40px 16px 80px}
header .kicker{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 8px}
h1{font-size:clamp(28px,4vw,40px);line-height:1.15;margin:0 0 14px;font-weight:650;letter-spacing:-.01em}
h2{font-size:20px;margin:40px 0 10px;font-weight:620}
.lede{max-width:70ch;color:var(--ink-2);font-size:17px;margin:0 0 6px}
.prose{max-width:70ch;color:var(--ink-2)}
.prose p{margin:0 0 12px}
a{color:var(--s-blue)}
.theme-btn{position:fixed;top:12px;right:12px;font:13px var(--sans);background:var(--surface);color:var(--ink-2);border:1px solid var(--ring);border-radius:8px;padding:6px 10px;cursor:pointer}

/* controls */
.controls{position:sticky;top:0;z-index:5;background:var(--page);border-bottom:1px solid var(--grid);padding:14px 0 12px;margin:28px 0 18px;display:flex;flex-direction:column;gap:10px}
.row{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center}
.ctl{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-2)}
.ctl > .lab{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em;margin-right:2px}
select{font:13px var(--sans);color:var(--ink);background:var(--surface);border:1px solid var(--ring);border-radius:6px;padding:4px 6px}
.seg{display:inline-flex;border:1px solid var(--ring);border-radius:7px;overflow:hidden}
.seg button{font:13px var(--sans);background:var(--surface);color:var(--ink-2);border:0;padding:4px 10px;cursor:pointer}
.seg button+button{border-left:1px solid var(--ring)}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--surface)}
.chips{display:flex;flex-wrap:wrap;gap:4px}
.chip{font:12px var(--sans);font-variant-numeric:tabular-nums;background:var(--surface);color:var(--ink-2);border:1px solid var(--ring);border-radius:999px;padding:2px 9px;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--surface);border-color:var(--ink)}
.chip.mini{border-style:dashed;color:var(--muted)}
.series-pick{display:flex;flex-wrap:wrap;gap:6px 14px}
.series-pick label{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-2);cursor:pointer}
.series-pick input{accent-color:var(--ink);margin:0}
.key{display:inline-block;width:26px;height:0;border-top:2px solid currentColor;vertical-align:middle}
.key.dash{border-top-style:dashed}
.btn{font:13px var(--sans);background:var(--surface);color:var(--ink-2);border:1px solid var(--ring);border-radius:6px;padding:4px 10px;cursor:pointer}

/* grid */
.grid-wrap{overflow-x:auto;padding-bottom:6px}
.grid{display:grid;gap:10px;min-width:min-content}
.col-head,.row-head{font-size:12px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.col-head{text-align:center;padding:0 0 2px;font-weight:600}
.row-head{writing-mode:vertical-rl;transform:rotate(180deg);text-align:center;font-weight:600;padding:0 2px}
.panel{background:var(--surface);border:1px solid var(--ring);border-radius:8px;position:relative}
.panel svg{display:block;width:100%;height:auto;overflow:visible}
.panel .empty{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--muted)}
.tick{font-size:10px;fill:var(--muted);font-variant-numeric:tabular-nums}
.ptitle{font-size:11px;fill:var(--ink-2)}
.status{font-size:13px;color:var(--muted);margin:8px 0}
.tip{position:fixed;pointer-events:none;z-index:20;background:var(--surface);color:var(--ink);border:1px solid var(--ring);border-radius:8px;box-shadow:0 4px 18px rgba(0,0,0,.12);padding:8px 10px;font-size:12px;min-width:180px;display:none}
.tip .th{color:var(--ink-2);margin-bottom:4px}
.tip .tr{display:flex;align-items:center;gap:8px;line-height:1.6}
.tip .tr b{font-variant-numeric:tabular-nums;min-width:48px;text-align:right}
.tip .tr .nm{color:var(--ink-2)}
.tip .tr .nn{color:var(--muted);margin-left:auto;font-variant-numeric:tabular-nums}
.legend{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:13px;color:var(--ink-2);margin:4px 0 10px}
.legend span{display:flex;align-items:center;gap:6px}
dl.defs{display:grid;grid-template-columns:max-content 1fr;gap:6px 16px;max-width:80ch;color:var(--ink-2);font-size:15px}
dl.defs dt{font-weight:600;color:var(--ink)}
dl.defs dd{margin:0}
table.counts{border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums;color:var(--ink-2)}
table.counts th,table.counts td{padding:4px 14px 4px 0;text-align:right;border-bottom:1px solid var(--grid)}
table.counts th:first-child,table.counts td:first-child{text-align:left}
footer{margin-top:48px;color:var(--muted);font-size:13px}
@media (max-width:640px){.wrap{padding-top:52px}.controls{position:static}}
/* page navigation */
.nav{display:flex;gap:14px;font-size:14px;margin:0 0 18px}
.nav a{color:var(--ink-2);text-decoration:none;border-bottom:2px solid transparent;padding-bottom:2px}
.nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--ink)}