:root {
  --bg: #FFF1E5;
  --panel: #F9E6D6;
  --ink: #33302E;
  --ink-2: #66605C;
  --muted: #8C847E;
  --grid: #E6D9CE;
  --rule: #CCC1B7;
  --s1: #0F5499;   /* below threshold / main line */
  --s2: #CC0A3D;   /* above threshold */
  --accent-bg: #0F5499;
  --accent-ink: #FFFFFF;
  --c1: #0F5499; --c2: #CC0A3D; --c3: #2A9D8F;
  --reg1: rgba(110, 90, 200, 0.10); --reg2: rgba(60, 150, 90, 0.10); --reg3: rgba(230, 180, 40, 0.14);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1B1A19; --panel: #262422; --ink: #F2EDE9; --ink-2: #BDB5AE; --muted: #8F8780;
    --grid: #34312E; --rule: #4A4642; --s1: #3D8BDB; --s2: #E4566C;
    --accent-bg: #3D8BDB; --accent-ink: #101010;
    --c1: #3D8BDB; --c2: #E4566C; --c3: #B98A1A;
    --reg1: rgba(140, 120, 230, 0.12); --reg2: rgba(80, 180, 110, 0.10); --reg3: rgba(230, 190, 60, 0.12);
  }
}
:root[data-theme="dark"] {
  --bg: #1B1A19; --panel: #262422; --ink: #F2EDE9; --ink-2: #BDB5AE; --muted: #8F8780;
  --grid: #34312E; --rule: #4A4642; --s1: #3D8BDB; --s2: #E4566C;
  --accent-bg: #3D8BDB; --accent-ink: #101010;
  --c1: #3D8BDB; --c2: #E4566C; --c3: #B98A1A;
  --reg1: rgba(140, 120, 230, 0.12); --reg2: rgba(80, 180, 110, 0.10); --reg3: rgba(230, 190, 60, 0.12);
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 15px;
}
.wrap { max-width: 1200px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { font-weight: 500; font-size: clamp(20px, 3vw, 30px); margin: 0 0 4px; }
h2 { font-weight: 500; font-size: 20px; margin: 36px 0 4px; }
.sub { color: var(--ink-2); font-size: 17px; margin: 0 0 18px; }
.note { color: var(--ink-2); margin: 0 0 8px; max-width: 70ch; }

.controls {
  display: flex; flex-wrap: wrap; gap: 14px 22px; padding: 14px 0;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
}
.ctl { display: flex; flex-direction: column; gap: 6px; }
.lbl { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.hint { font-size: 12px; color: var(--muted); align-self: center; }
.row { display: flex; gap: 8px; align-items: center; }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--rule); border-radius: 6px; overflow: hidden; }
.seg button {
  background: transparent; color: var(--ink); border: 0; border-right: 1px solid var(--rule);
  padding: 6px 10px; font: inherit; font-size: 14px; cursor: pointer; min-width: 34px;
}
.seg button:last-child { border-right: 0; }
.seg button:hover { background: var(--panel); }
.seg button.on { background: var(--accent-bg); color: var(--accent-ink); }
input[type=number] {
  width: 76px; padding: 5px 6px; font: inherit; font-size: 14px; color: var(--ink);
  background: var(--bg); border: 1px solid var(--rule); border-radius: 6px;
}
.chk { display: flex; gap: 4px; align-items: center; font-size: 14px; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin: 16px 0; }
.tile { background: var(--panel); border-radius: 8px; padding: 10px 12px; }
.tile .k { font-size: 12px; color: var(--muted); }
.tile .v { font-size: 24px; font-weight: 600; font-variant-numeric: tabular-nums; }
.tile .d { font-size: 12px; color: var(--ink-2); }
.sw { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 4px; vertical-align: 0; }

.chart { width: 100%; height: 640px; }
.chart.small { height: 420px; }
@media (max-width: 640px) { .chart { height: 560px; } .chart.small { height: 360px; } }

footer { margin-top: 28px; color: var(--ink-2); font-size: 13px; border-top: 1px solid var(--rule); padding-top: 14px; }
footer a { color: var(--s1); }
.btn {
  background: transparent; color: var(--ink); border: 1px solid var(--rule); border-radius: 6px;
  padding: 7px 12px; font: inherit; cursor: pointer;
}
.btn:hover { background: var(--panel); }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--rule); margin-bottom: 20px; overflow-x: auto; }
.tabs button {
  background: transparent; border: 0; border-bottom: 3px solid transparent; color: var(--ink-2);
  padding: 10px 14px; font: inherit; font-size: 15px; cursor: pointer; white-space: nowrap;
}
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent-bg); font-weight: 600; }
.tabs button:hover { color: var(--ink); }

.keypoints { background: var(--panel); border-left: 3px solid var(--accent-bg); border-radius: 6px; padding: 10px 14px; margin: 0 0 16px; }
.keypoints summary { cursor: pointer; font-weight: 600; font-size: 14px; }
.keypoints ul { margin: 8px 0 2px; padding-left: 18px; }
.keypoints li { margin: 5px 0; line-height: 1.45; font-size: 14px; color: var(--ink); }
.keypoints a { color: var(--s1); }

.chart.medium { height: 520px; }
@media (max-width: 640px) { .chart.medium { height: 420px; } }
.tablewrap { overflow-x: auto; margin: 12px 0 8px; }
table.data { border-collapse: collapse; font-size: 14px; font-variant-numeric: tabular-nums; min-width: 520px; }
table.data th, table.data td { padding: 6px 12px; text-align: right; border-bottom: 1px solid var(--grid); }
table.data th:first-child { text-align: left; font-weight: 500; }
table.data thead th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }

.eyebrow { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 4px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; margin: 12px 0; }
.cards.three { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--panel); border-radius: 8px; padding: 12px 16px; }
.card h3 { margin: 0 0 6px; font-size: 15px; font-weight: 600; }
.card p, .card li { font-size: 14px; line-height: 1.5; margin: 4px 0; }
.card ol, .card ul { padding-left: 18px; margin: 4px 0; }
.eq { font-family: "Cambria Math", "STIX Two Math", Georgia, serif; font-size: 18px; text-align: center; overflow-x: auto; padding: 8px 0; }
.small { font-size: 12px; color: var(--muted); font-weight: 400; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.grid2 h3, #tab-research > h3 { font-size: 15px; font-weight: 600; margin: 18px 0 4px; }
table.data.clickable tbody tr { cursor: pointer; }
table.data.clickable tbody tr:hover, table.data tbody tr.sel { background: var(--panel); }
table.data tbody tr.sel th { box-shadow: inset 3px 0 0 var(--accent-bg); }
table.refs { min-width: 640px; }
table.refs th, table.refs td { text-align: left; vertical-align: top; font-weight: 400; }
table.refs a { color: var(--s1); }
#rsTable thead th, #rsRace thead th, #r2States thead th, #r2Stab thead th, #r2Robust thead th, #r2Iv thead th { text-transform: none; letter-spacing: 0; font-size: 12px; }

[hidden] { display: none !important; }
.controls.compact { border: 0; padding: 4px 0 8px; }
.methods { border: 1px solid var(--rule); border-radius: 8px; padding: 10px 14px; margin: 14px 0; }
.methods summary { cursor: pointer; font-weight: 600; font-size: 14px; }
.methods .card p { font-size: 13px; }
.mcards { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
.methods .card.rolling { margin: 14px 0; }
.mcards .card[data-tf].active { box-shadow: inset 0 0 0 2px var(--accent-bg); }
.katex-display { overflow-x: auto; overflow-y: hidden; padding: 2px 0; margin: 6px 0; }
.katex { font-size: 1.02em; }
h3.r2h { font-size: 15px; font-weight: 600; margin: 22px 0 6px; }
.badge { display: inline-block; font-size: 11px; font-weight: 600; padding: 1px 6px; border-radius: 4px; background: var(--accent-bg); color: var(--accent-ink); vertical-align: 1px; }