:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #111318;
  --muted: #69707d;
  --line: #e3e6eb;
  --accent: #1d4ed8;
  --accent-soft: #eef2ff;
  --accent-line: #d9ddff;
  --field: #ffffff;
  --shadow: rgba(16,24,40,.07);
  --good: #137a45;
  --chart-1: #bfdbfe;
  --chart-2: #93c5fd;
  --chart-3: #60a5fa;
  --chart-4: #3b82f6;
  --chart-5: #1d4ed8;
  --chart-6: #172554;
  --chart-warm: #ea580c;
  --chart-neutral: #6b7280;
  --chart-open: #2563eb;
  --chart-frontier: #16866f;
  --chart-proprietary: #db2777;
}
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b0d10;
  --card: #12151a;
  --ink: #f4f6f8;
  --muted: #9ca4af;
  --line: #2a3039;
  --accent: #8bb6ff;
  --accent-soft: #192235;
  --accent-line: #2e4264;
  --field: #171b21;
  --shadow: rgba(0,0,0,.3);
  --good: #58c78c;
  --chart-1: #dbeafe;
  --chart-2: #bfdbfe;
  --chart-3: #93c5fd;
  --chart-4: #60a5fa;
  --chart-5: #3b82f6;
  --chart-6: #1d4ed8;
  --chart-warm: #fb923c;
  --chart-neutral: #a6adb7;
  --chart-open: #71aef0;
  --chart-frontier: #5dd6b8;
  --chart-proprietary: #f472b6;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: "Plus Jakarta Sans", Helvetica, Arial, sans-serif; }
.shell { max-width: 1380px; margin: 0 auto; padding: 30px 24px 56px; }
.topbar { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; margin-bottom: 24px; }
h1 { margin: 6px 0 8px; font-size: clamp(36px, 5vw, 62px); letter-spacing: -.05em; line-height: 1; }
.lede { color: var(--muted); max-width: 780px; margin: 0; font-size: 17px; line-height: 1.5; }
.contact-link { margin: 8px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.source-freshness { margin: 4px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.header-actions { display: flex; align-items: center; gap: 14px; }
.text-link, a { color: var(--accent); text-decoration: none; }
.text-link:hover, a:hover { text-decoration: underline; }
.theme-toggle { padding: 9px 12px; background: var(--field); color: var(--ink); border: 1px solid var(--line); }
.product-tabs { display: flex; gap: 4px; overflow-x: auto; margin: 0 0 18px; padding-bottom: 1px; border-bottom: 1px solid var(--line); }
.product-tabs button { flex: 0 0 auto; padding: 12px 15px; border-radius: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--muted); }
.product-tabs button:hover { color: var(--ink); }
.product-tabs button.active { color: var(--ink); border-bottom-color: var(--ink); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 6px 24px var(--shadow); }
.controls { display: grid; grid-template-columns: 2fr 1fr 1fr auto; gap: 14px; padding: 16px; align-items: end; }
label { display: grid; gap: 6px; font-size: 12px; font-weight: 700; color: var(--muted); }
input, select, button { font: inherit; }
input, select { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; background: var(--field); color: var(--ink); outline: none; }
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent); }
button { border: 0; border-radius: 10px; padding: 11px 18px; background: var(--ink); color: var(--bg); cursor: pointer; font-weight: 700; }
.secondary-button { background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent-line); }
.chart-actions { display: flex; align-items: end; gap: 8px; }
.chart-actions label { min-width: 140px; }
.model-picker { position: relative; }
.model-results { position: absolute; z-index: 20; top: calc(100% + 6px); left: 0; right: 0; max-height: 330px; overflow: auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 14px 32px var(--shadow); padding: 6px; }
.model-result { display: block; width: 100%; padding: 10px; border-radius: 8px; background: var(--card); color: var(--ink); text-align: left; font-weight: 600; }
.model-result:hover, .model-result:focus { background: var(--accent-soft); color: var(--accent); }
.model-result small { display: block; margin-top: 2px; color: var(--muted); font-weight: 500; overflow: hidden; text-overflow: ellipsis; }
.model-empty { padding: 12px; color: var(--muted); }
.load-error { margin: 10px 4px 0; color: #b42318; font-size: 13px; font-weight: 650; }
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 14px 0; }
.kpi { padding: 18px; min-height: 126px; display: flex; flex-direction: column; justify-content: space-between; }
.kpi span { color: var(--muted); font-size: 13px; }
.kpi strong { font-size: 30px; letter-spacing: -.035em; }
.kpi small { color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chart-card { padding: 18px; }
.gpqa-card { padding: 22px; margin-top: 14px; }
.hero-benchmark { margin-top: 0; box-shadow: 0 12px 36px var(--shadow); }
.hero-benchmark h2 { font-size: 22px; letter-spacing: -.02em; }
.benchmark-head { display: block; }
.benchmark-head > div:first-child { min-width: 0; }
.benchmark-head label { min-width: 0; }
.benchmark-controls { display: flex; align-items: end; justify-content: flex-start; gap: 8px; flex-wrap: nowrap; margin-top: 10px; padding-bottom: 2px; overflow-x: auto; }
.benchmark-controls label { min-width: 0; }
#costViewControl { flex: 0 0 190px; }
#benchmarkWeightingControl { flex: 0 0 165px; }
#benchmarkYScaleControl { flex: 0 0 140px; }
#usageMetricControl { flex: 0 0 360px; }
.benchmark-controls .range-tabs, .benchmark-controls .custom-range, .benchmark-controls #benchmarkZoomReset { flex: 0 0 auto; }
.benchmark-controls .frontier-toggle { display: flex; align-items: center; align-self: center; gap: 7px; min-width: 0; color: var(--ink); cursor: pointer; }
.frontier-toggle input { width: 15px; height: 15px; margin: 0; padding: 0; accent-color: #111318; box-shadow: none; }
.benchmark-controls button { white-space: nowrap; }
#benchmarkZoomReset, #taskMixZoomReset { align-self: flex-end; padding: 7px 9px; border-color: transparent; background: transparent; color: var(--muted); font-size: 11px; font-weight: 650; }
#benchmarkZoomReset:hover, #taskMixZoomReset:hover { color: var(--ink); background: var(--field); border-color: var(--line); }
.range-tabs { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: 10px; background: var(--field); }
.range-tabs button { padding: 7px 9px; border-radius: 7px; background: transparent; color: var(--muted); font-size: 11px; }
.range-tabs button:hover { color: var(--ink); background: var(--card); }
.range-tabs button.active { color: var(--bg); background: var(--ink); }
.custom-range { position: relative; align-self: flex-end; }
.custom-range > summary { display: flex; align-items: center; min-height: 36px; cursor: pointer; color: var(--muted); font-size: 11px; font-weight: 650; padding: 8px 10px; }
.custom-range > div { position: absolute; z-index: 12; right: 0; top: calc(100% + 6px); display: flex; align-items: end; gap: 8px; min-width: 390px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); box-shadow: 0 12px 30px var(--shadow); }
.custom-range label { min-width: 130px !important; }
.custom-range button { padding: 10px 13px; }
.benchmark-summary { padding: 9px 0 12px; border-bottom: 1px solid var(--line); color: var(--accent); font-size: 13px; font-weight: 700; }
.series-toggles { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 14px; padding: 8px 2px 0; }
.series-toggles[hidden] { display: none; }
.series-toggle { display: inline-flex; grid-template-columns: none; align-items: center; gap: 7px; min-width: 0 !important; color: var(--ink); cursor: pointer; font-size: 12px; font-weight: 650; }
.series-toggle input { width: 15px; height: 15px; margin: 0; padding: 0; accent-color: var(--series-color); box-shadow: none; }
.series-swatch { width: 14px; height: 3px; border-radius: 2px; background: var(--series-color); }
.quality-chart-head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; margin: 9px 2px 5px; font-size: 13px; }
.quality-chart-head span { color: var(--muted); font-size: 12px; }
.quality-chart-head span:first-child { color: var(--ink); font-weight: 650; }
.quality-chart-wrap { height: 390px; margin-bottom: 6px; }
.benchmark-table { max-height: 480px; }
.benchmark-table td:nth-child(n+2), .benchmark-table th:nth-child(n+2) { text-align: right; }
.table-tools { display: grid; grid-template-columns: minmax(220px, 1fr) minmax(220px, .55fr); gap: 12px; padding: 13px 0; border-top: 1px solid var(--line); }
.source-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; font-size: 11px; }
.cost-provider { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; }
.benchmark-note { color: var(--muted); font-size: 12px; margin: 10px 2px 0; }
.methodology-inline { margin-top: 7px; border-top: 1px solid var(--line); color: var(--muted); }
.methodology-inline summary { cursor: pointer; padding: 9px 2px 2px; color: var(--ink); font-size: 12px; font-weight: 750; }
.methodology-inline p { max-width: 920px; margin: 8px 2px 2px; font-size: 12px; line-height: 1.55; }
.methodology-link { margin: 12px 2px 0; font-size: 12px; font-weight: 700; }
.temporary-note-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 12px; margin: 12px 2px 0; }
.temporary-note { margin: 0; color: var(--muted); font-size: 11px; }
.estimate-toggle { padding: 4px 8px; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--ink); font-size: 11px; font-weight: 700; }
.estimate-toggle[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.estimate-assumptions { margin: 7px 2px 0; max-width: 900px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.benchmark-details { border-top: 1px solid var(--line); margin-top: 3px; }
.benchmark-details summary { cursor: pointer; color: var(--ink); font-size: 12px; font-weight: 700; padding: 9px 2px; }
.task-mix-section { margin-top: 18px; padding: 22px; }
.task-mix-head { align-items: flex-end; }
.task-mix-head h2 { font-size: 22px; letter-spacing: -.02em; }
.task-mix-controls { display: flex; align-items: end; gap: 8px; flex-wrap: wrap; }
.task-mix-controls label { min-width: 125px; }
.task-mix-controls button { white-space: nowrap; }
.task-mix-chart-wrap { height: 390px; }
.supporting-section { margin-top: 34px; padding-top: 28px; border-top: 1px solid var(--line); }
.supporting-head { margin-bottom: 12px; }
.supporting-head span { color: var(--accent); font-size: 11px; letter-spacing: .11em; font-weight: 800; }
.supporting-head h2 { font-size: 22px; margin-top: 4px; }
.supporting-head p { margin: 3px 0 0; color: var(--muted); font-size: 13px; }
.compact-controls { grid-template-columns: 2fr repeat(3, 1fr) auto; }
.secondary-chart { margin-top: 12px; }
.secondary-chart .chart-wrap { height: 320px; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; margin-bottom: 12px; }
.section-head.benchmark-head { display: block; }
h2 { font-size: 18px; margin: 0 0 3px; }
.section-head p, .legend-note { margin: 0; color: var(--muted); font-size: 12px; }
.chart-wrap { height: 390px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 14px; }
.grid-2 .card { padding: 18px; }
.table-wrap { max-height: 430px; overflow: auto; border-top: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; border-bottom: 1px solid var(--line); padding: 10px 8px; vertical-align: top; }
th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; position: sticky; top: 0; background: var(--card); }
td:nth-child(2), th:nth-child(2) { text-align: right; }
.model-link { color: var(--ink); cursor: pointer; font-weight: 650; }
.model-link:hover { color: var(--accent); }
footer { color: var(--muted); font-size: 12px; line-height: 1.5; margin-top: 18px; }
.methodology-shell { max-width: 840px; margin: 0 auto; padding: 34px 24px 70px; }
.methodology-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 54px; }
.methodology-page header { margin-bottom: 36px; }
.methodology-page section { padding: 24px 0; border-top: 1px solid var(--line); }
.methodology-page section h2 { font-size: 22px; }
.methodology-page section p { color: var(--muted); line-height: 1.65; }
.formula { margin: 14px 0; padding: 15px 18px; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--field); color: var(--ink); line-height: 1.55; text-align: center; }
.formula .katex-display { margin: 0; overflow-x: auto; overflow-y: hidden; }
.formula .katex { font-size: 1.08em; }
.methodology-page p code { color: var(--ink); font-family: "Plus Jakarta Sans", Helvetica, Arial, sans-serif; font-weight: 650; }
@media (max-width: 900px) {
  .controls, .compact-controls { grid-template-columns: 1fr 1fr; }
  .kpis { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .topbar { display: block; }
  .header-actions { margin-top: 18px; }
  .task-mix-head { display: grid; align-items: start; }
  .table-tools { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .shell { padding: 24px 14px 40px; }
  .controls, .kpis { grid-template-columns: 1fr; }
  .quality-chart-wrap { height: 350px; }
  .quality-chart-head { display: grid; }
  .task-mix-controls label { min-width: calc(50% - 4px); }
  .task-mix-chart-wrap { height: 350px; }
}