:root {
  color-scheme: dark;
  --bg: #0c0f12;
  --panel: #14191e;
  --panel-raised: #1a2026;
  --panel-soft: #10151a;
  --border: #2b333a;
  --border-strong: #43505a;
  --text: #e8edf0;
  --muted: #8f9aa2;
  --dim: #606b73;
  --signal: #c9ff4f;
  --signal-soft: rgba(201, 255, 79, 0.12);
  --blue: #77b8ff;
  --violet: #c0a3ff;
  --orange: #ffae72;
  --green: #6ee0b5;
  --slate: #a6b2bc;
  --radius: 12px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 82% 0%, rgba(201,255,79,.045), transparent 32rem), var(--bg); }
button, input { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }
.app-shell { max-width: 1440px; margin: 0 auto; padding: 0 32px 48px; }
.topbar { min-height: 76px; display:flex; justify-content:space-between; align-items:center; border-bottom: 1px solid var(--border); }
.brand { display:flex; align-items:center; gap: 11px; color:var(--text); text-decoration:none; font-size: .92rem; letter-spacing: -.01em; font-weight: 650; }
.brand-mark { display:flex; gap:3px; align-items:flex-end; width:20px; height:18px; }
.brand-mark i { display:block; width:4px; border-radius:4px; background:var(--signal); }
.brand-mark i:nth-child(1) { height:8px; opacity:.6; }.brand-mark i:nth-child(2) { height:14px; opacity:.8; }.brand-mark i:nth-child(3) { height:18px; }
.topbar-meta { display:flex; align-items:center; gap:9px; color:var(--muted); font-size: .75rem; letter-spacing: .06em; text-transform:uppercase; }
.status-dot { width:7px; height:7px; border-radius:50%; background:var(--signal); box-shadow:0 0 14px var(--signal); }
.icon-button { margin-left:12px; width:30px; height:30px; padding:0; color:var(--muted); background:transparent; border:1px solid var(--border); border-radius:8px; }
main { padding-top: 58px; }
.intro-grid { display:grid; grid-template-columns:minmax(0, 1.1fr) minmax(300px, .7fr); gap: 64px; align-items:end; margin-bottom: 50px; }
.eyebrow { margin:0 0 12px; color:var(--signal); font-size:.68rem; letter-spacing:.17em; font-weight:700; }
h1, h2, h3, p { margin-top:0; }
h1 { margin-bottom:20px; font-size:clamp(2.9rem, 6vw, 6.2rem); line-height:.95; letter-spacing:-.075em; font-weight:760; }
h1 em { color:var(--signal); font-style:normal; }
.lede { max-width:580px; color:var(--muted); font-size:1.04rem; line-height:1.65; }
.question-card { position:relative; padding:27px 28px; border:1px solid var(--border-strong); background:linear-gradient(135deg, rgba(201,255,79,.07), transparent 62%), var(--panel); border-radius:var(--radius); overflow:hidden; }
.question-card:after { content:""; position:absolute; right:-35px; top:-55px; width:130px; height:130px; border:1px solid rgba(201,255,79,.3); border-radius:50%; box-shadow:0 0 0 15px rgba(201,255,79,.04), 0 0 0 30px rgba(201,255,79,.025); }
.card-kicker { display:flex; gap:8px; align-items:center; color:var(--signal); font-size:.7rem; letter-spacing:.12em; font-weight:700; text-transform:uppercase; }
.signal-icon { font-size:1rem; }.question-card p { position:relative; z-index:1; max-width:360px; margin:24px 0 28px; font-size:1.1rem; line-height:1.45; letter-spacing:-.02em; }
.contract-row { color:var(--muted); font-size:.7rem; letter-spacing:.08em; text-transform:uppercase; display:flex; gap:10px; align-items:center; flex-wrap:wrap; }.arrow { color:var(--signal); }
.workspace { display:grid; grid-template-columns: 335px minmax(0,1fr); gap:18px; align-items:start; }
.panel { background:var(--panel); border:1px solid var(--border); border-radius:var(--radius); }
.control-panel { padding:24px; position:sticky; top:18px; }
.panel-heading { display:flex; justify-content:space-between; align-items:flex-start; gap:16px; }.panel-heading h2, .panel-heading h3, .table-heading h3, .chart-header h3 { margin:0; font-size:1.18rem; letter-spacing:-.03em; }.version-pill { white-space:nowrap; padding:5px 8px; color:var(--muted); border:1px solid var(--border); border-radius:5px; font-size:.63rem; letter-spacing:.08em; text-transform:uppercase; }
.model-scope { max-width:285px; margin:8px 0 0; color:var(--dim); font-size:.68rem; line-height:1.45; }.model-scope strong { color:var(--muted); }
.control-section { border-top:1px solid var(--border); margin-top:24px; padding-top:20px; }.control-section label { display:flex; justify-content:space-between; gap:8px; color:var(--muted); font-size:.79rem; margin-bottom:11px; }.control-section output { color:var(--text); font-variant-numeric:tabular-nums; }.control-section input[type=range] { width:100%; accent-color:var(--signal); }.range-hints { display:flex; justify-content:space-between; color:var(--dim); font-size:.68rem; margin-top:5px; }
.two-col { display:grid; grid-template-columns:1fr 1fr; column-gap:12px; }.two-col label { grid-row:1; }.two-col input { grid-row:2; }.two-col .field-note { grid-row:3; }.field-note { color:var(--dim); font-size:.64rem; margin-top:6px; line-height:1.3; }.compact-fields input { width:100%; border:1px solid var(--border-strong); border-radius:7px; background:var(--panel-soft); color:var(--text); padding:9px 10px; }.section-label { display:flex; justify-content:space-between; color:var(--text); font-size:.78rem; margin-bottom:14px; }.info-dot { display:grid; place-items:center; width:16px; height:16px; border:1px solid var(--border-strong); border-radius:50%; color:var(--muted); font-size:.65rem; cursor:help; }.gated-controls { background:rgba(201,255,79,.035); margin-left:-12px; margin-right:-12px; padding-left:12px; padding-right:12px; border-top-color:rgba(201,255,79,.22); }
.action-stack { display:grid; gap:9px; margin-top:24px; }.primary-button, .secondary-button { min-height:44px; border-radius:8px; font-size:.84rem; font-weight:700; }.primary-button { border:1px solid var(--signal); background:var(--signal); color:#10150b; box-shadow:0 5px 20px rgba(201,255,79,.08); }.primary-button:hover { background:#dcff85; }.secondary-button { background:transparent; color:var(--muted); border:1px solid var(--border-strong); }.secondary-button:not(:disabled):hover { color:var(--text); border-color:var(--text); }.secondary-button:disabled { cursor:not-allowed; opacity:.45; }.play-triangle { font-size:.68rem; margin-right:6px; }.helper-text { min-height:17px; margin:14px 0 0; color:var(--dim); font-size:.71rem; line-height:1.4; }.progress-wrap { margin-top:17px; }.progress-label { display:flex; justify-content:space-between; color:var(--muted); font-size:.69rem; margin-bottom:7px; }.progress-track { height:4px; background:var(--border); border-radius:5px; overflow:hidden; }.progress-track div { width:0%; height:100%; background:var(--signal); transition:width .12s linear; }
.results-panel { min-width:0; display:grid; gap:18px; }.result-overview, .chart-panel, .table-panel { padding:24px; }.results-heading { align-items:center; }.result-actions { display:flex; gap:12px; flex-wrap:wrap; justify-content:flex-end; }.text-button { padding:0; color:var(--muted); background:none; border:0; font-size:.73rem; text-decoration:underline; text-decoration-color:var(--border-strong); text-underline-offset:3px; }.text-button:hover, .text-button:focus-visible { color:var(--signal); }.file-button { cursor:pointer; }.file-button input { position:absolute; width:1px; height:1px; opacity:0; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; }
.metric-strip { display:grid; grid-template-columns:repeat(4,1fr); border-top:1px solid var(--border); margin-top:23px; padding-top:21px; }.metric { min-width:0; padding-right:15px; border-right:1px solid var(--border); margin-right:15px; }.metric:last-child { border:0; margin:0; }.metric span, .metric small { display:block; color:var(--muted); font-size:.68rem; }.metric strong { display:block; margin:7px 0 3px; font-size:1.18rem; letter-spacing:-.04em; font-variant-numeric:tabular-nums; }.metric small { color:var(--dim); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }.accent-metric strong { color:var(--signal); }.small-metric { font-size:.96rem !important; }
.chart-panel { min-height:330px; }.chart-header, .table-heading, .chart-footer { display:flex; justify-content:space-between; gap:16px; align-items:flex-start; }.chart-wrap { height:225px; position:relative; margin-top:22px; background:linear-gradient(180deg, rgba(255,255,255,.025), transparent); border:1px solid rgba(255,255,255,.055); border-radius:8px; overflow:hidden; }.chart-wrap canvas { display:block; width:100%; height:100%; }.chart-empty { position:absolute; inset:0; display:grid; place-items:center; color:var(--dim); font-size:.78rem; }.chart-description { margin:10px 0 0; color:var(--dim); font-size:.68rem; line-height:1.45; }.legend { display:flex; gap:11px; flex-wrap:wrap; justify-content:flex-end; }.legend-item { display:flex; gap:5px; align-items:center; color:var(--muted); font-size:.65rem; }.legend-swatch { width:8px; height:8px; border-radius:50%; }.chart-footer { margin-top:10px; color:var(--dim); font-size:.64rem; }.accessible-data { margin-top:14px; border-top:1px solid var(--border); padding-top:12px; }.accessible-data summary, .trace-panel summary { color:var(--muted); cursor:pointer; font-size:.72rem; }.accessible-data summary:focus-visible, .trace-panel summary:focus-visible { outline:2px solid var(--signal); outline-offset:3px; }
.table-note { color:var(--dim); font-size:.68rem; }.table-scroll { overflow-x:auto; margin-top:20px; }table { width:100%; border-collapse:collapse; font-size:.75rem; min-width:680px; }caption { text-align:left; color:var(--dim); padding:0 0 10px; font-size:.68rem; }th { color:var(--dim); text-align:left; font-size:.63rem; font-weight:600; letter-spacing:.08em; text-transform:uppercase; padding:0 12px 12px; border-bottom:1px solid var(--border); }th:first-child, td:first-child { padding-left:0; }td { padding:14px 12px; border-bottom:1px solid rgba(255,255,255,.06); color:var(--muted); font-variant-numeric:tabular-nums; }td:first-child { color:var(--text); font-weight:650; }tr:last-child td { border-bottom:0; }.method-dot { display:inline-block; width:7px; height:7px; border-radius:50%; margin-right:7px; }.empty-cell { color:var(--dim); text-align:center; padding:28px; }.trace-panel { padding:0; }.trace-panel summary { padding:20px 24px; list-style-position:inside; }.trace-content { padding:0 24px 24px; }.trace-controls { display:grid; grid-template-columns:auto minmax(160px, 240px) 1fr; gap:12px; align-items:center; }.trace-controls label { color:var(--muted); font-size:.72rem; }.trace-controls select { border:1px solid var(--border-strong); border-radius:7px; background:var(--panel-soft); color:var(--text); padding:8px 10px; }.trace-controls .table-note { margin:0; }
.visually-hidden { position:absolute !important; width:1px !important; height:1px !important; padding:0 !important; margin:-1px !important; overflow:hidden !important; clip:rect(0,0,0,0) !important; white-space:nowrap !important; border:0 !important; }
.bottom-grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; margin-top:18px; }.contract-card, .readout-card { padding:26px; }.contract-card h2, .readout-card h2 { margin:0 0 23px; font-size:1.4rem; letter-spacing:-.04em; }.contract-list { display:grid; gap:17px; }.contract-item { display:grid; grid-template-columns:23px 1fr; gap:11px; }.check { display:grid; place-items:center; width:20px; height:20px; color:var(--signal); border:1px solid rgba(201,255,79,.4); border-radius:50%; font-size:.7rem; }.contract-item strong { font-size:.82rem; }.contract-item p { margin:4px 0 0; color:var(--muted); font-size:.76rem; line-height:1.5; }.readout-callout { display:flex; gap:14px; padding:17px; background:var(--signal-soft); border-left:2px solid var(--signal); }.callout-mark { color:var(--signal); font-size:1.4rem; line-height:1; }.readout-callout p { margin:0; color:#d6e2c1; font-size:.82rem; line-height:1.55; }.readout-meta { display:flex; gap:18px; flex-wrap:wrap; margin:23px 0; color:var(--muted); font-size:.68rem; }.readout-meta strong { color:var(--signal); font-weight:700; letter-spacing:.08em; margin-left:4px; }.reset-link { padding:0; color:var(--muted); background:none; border:0; font-size:.72rem; text-decoration:underline; text-decoration-color:var(--border-strong); text-underline-offset:3px; }.reset-link:hover { color:var(--text); }.footer { display:flex; justify-content:space-between; gap:20px; margin-top:37px; color:var(--dim); font-size:.66rem; letter-spacing:.03em; }
.toast { position:fixed; right:22px; bottom:22px; max-width:320px; padding:12px 15px; color:var(--text); background:var(--panel-raised); border:1px solid var(--border-strong); border-radius:8px; box-shadow:0 12px 35px rgba(0,0,0,.3); font-size:.78rem; opacity:0; transform:translateY(8px); pointer-events:none; transition:all .2s ease; }.toast.show { opacity:1; transform:translateY(0); }
body.light { --bg:#eef2ed; --panel:#fbfcf9; --panel-raised:#fff; --panel-soft:#f2f5f0; --border:#d8dfd7; --border-strong:#b6c3b4; --text:#172118; --muted:#637064; --dim:#859084; background:radial-gradient(circle at 82% 0%, rgba(70,112,30,.08), transparent 32rem), var(--bg); color-scheme:light; }.light .question-card { background:linear-gradient(135deg, rgba(96,145,40,.08), transparent 62%), var(--panel); }.light .readout-callout p { color:#3e5534; }.light .chart-wrap { background:linear-gradient(180deg, rgba(0,0,0,.025), transparent); }
@media (max-width: 980px) { .app-shell { padding:0 20px 35px; }.intro-grid { grid-template-columns:1fr; gap:25px; max-width:740px; }.workspace { grid-template-columns:1fr; }.control-panel { position:static; }.results-panel { order:2; }.bottom-grid { grid-template-columns:1fr; }.control-panel { max-width:none; }.control-section { max-width:600px; } }
@media (max-width: 640px) { .app-shell { padding:0 14px 28px; }.topbar { min-height:65px; }.topbar-meta > span:not(.status-dot) { display:none; }.topbar-meta .icon-button { margin-left:0; }.intro-grid { margin-bottom:30px; }.intro-grid h1 { font-size:3.4rem; }.question-card { padding:21px; }.panel, .result-overview, .chart-panel, .table-panel, .contract-card, .readout-card { padding:18px; }.metric-strip { grid-template-columns:repeat(2,1fr); row-gap:18px; }.metric:nth-child(2) { border:0; margin:0; }.metric:nth-child(3) { border-top:1px solid var(--border); padding-top:14px; }.metric:nth-child(4) { border-top:1px solid var(--border); padding-top:14px; }.results-heading, .chart-header, .table-heading { display:block; }.result-actions { margin-top:17px; justify-content:flex-start; }.legend { justify-content:flex-start; margin-top:15px; }.chart-footer span:nth-child(2) { display:none; }.trace-controls { grid-template-columns:1fr; align-items:start; gap:7px; }.footer { display:block; line-height:1.7; }.footer span { display:block; }.lede { font-size:.95rem; } }