:root {
  color-scheme: light;
  --page: #f9f9f7; --surface: #fcfcfb; --raised: #ffffff;
  --ink: #0b0b0b; --ink-2: #52514e; --muted: #6d6b66;
  --grid: #e1e0d9; --axis: #c3c2b7; --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6; --accent-ink: #1c5cab; --good: #087a16; --bad: #b72c2c;
  --warn: #886011; --radius: 12px; --shadow: 0 1px 2px rgba(11, 11, 11, 0.06);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d; --surface: #1a1a19; --raised: #222220;
    --ink: #f0efec; --ink-2: #c3c2b7; --muted: #9a998f;
    --grid: #2c2c2a; --axis: #383835; --border: rgba(255, 255, 255, 0.10);
    --accent: #3987e5; --accent-ink: #86b6ef; --good: #69c577; --bad: #f18a82;
    --warn: #dab566; --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --raised: #222220;
  --ink: #f0efec; --ink-2: #c3c2b7; --muted: #9a998f;
  --grid: #2c2c2a; --axis: #383835; --border: rgba(255, 255, 255, 0.10);
  --accent: #3987e5; --accent-ink: #86b6ef; --good: #69c577; --bad: #f18a82;
  --warn: #dab566; --shadow: none;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body { margin: 0; background: var(--page); color: var(--ink); font: 15px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; }
button, input, select { font: inherit; }
button, summary, a, input, select { -webkit-tap-highlight-color: transparent; }
a { color: var(--accent-ink); }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .45; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
code { font: .92em ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--raised); border: 1px solid var(--border); border-radius: 5px; padding: 0 4px; overflow-wrap: anywhere; }
.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }
.workspace-wrap { width: calc(100% - 32px); margin-inline: auto; }
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--page) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.top-row { display: flex; align-items: center; gap: 20px; height: 56px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-weight: 700; flex-shrink: 0; }
.brand svg { fill: var(--accent); }
nav { display: flex; gap: 4px; margin-left: auto; overflow-x: auto; }
nav a { color: var(--ink-2); text-decoration: none; padding: 8px 10px; border-radius: 8px; white-space: nowrap; font-size: 14px; }
nav a:hover, nav a[aria-current="page"] { background: var(--surface); color: var(--ink); }
nav a[aria-current="page"] { box-shadow: inset 0 -2px var(--accent); }
.theme { display: grid; place-items: center; flex-shrink: 0; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--ink); }
section { padding: 38px 0 8px; }
.hero { padding-top: 48px; }
.kicker { color: var(--muted); margin: 0 0 6px; font-weight: 600; font-size: 13px; letter-spacing: .02em; }
h1 { font-size: clamp(28px, 4.2vw, 44px); line-height: 1.14; margin: 0 0 14px; letter-spacing: -.015em; }
h2 { font-size: 24px; line-height: 1.3; margin: 0; }
h3 { font-size: 16px; margin: 0 0 6px; }
p { overflow-wrap: anywhere; }
.lede { max-width: 790px; color: var(--ink-2); font-size: 17px; margin: 0 0 24px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 26px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--border); background: var(--raised); color: var(--ink); border-radius: 8px; padding: 7px 12px; min-height: 40px; text-decoration: none; font-weight: 500; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.small { padding: 5px 9px; min-height: 34px; font-size: 12px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 28px; font-weight: 650; font-variant-numeric: tabular-nums; }
.section-head { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.note { color: var(--muted); margin: 0; font-size: 13px; }
.refresh-status { font-variant-numeric: tabular-nums; }
.results-intro { color: var(--ink-2); max-width: 960px; margin: 0 0 20px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; margin: 0 0 16px; box-shadow: var(--shadow); }
.grid2, .grid3 { display: grid; gap: 16px; margin-top: 16px; }
.grid2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 460px), 1fr)); }
.grid3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.grid2 .card, .grid3 .card { margin-bottom: 0; }
.grid2 .card p, .grid3 .card p { color: var(--ink-2); margin: 8px 0 0; }
.grid3 .card h2 { font-size: 18px; }
.table-wrap { overflow-x: auto; padding: 0; }
.model-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.model-table th, .model-table td { text-align: left; padding: 14px 12px; border-bottom: 1px solid var(--grid); vertical-align: top; }
.model-table thead th { color: var(--muted); font-size: 12px; font-weight: 600; white-space: nowrap; }
.model-table tbody th { min-width: 228px; font-weight: 500; }
.model-table tbody tr:last-child > * { border-bottom: 0; }
.model-name { font-weight: 650; font-size: 14px; display: block; color: var(--ink); }
.model-identity { display: block; color: var(--muted); font-size: 12px; margin: 3px 0 6px; overflow-wrap: anywhere; }
.model-state { margin-top: 8px; }
.coverage { min-width: 80px; display: grid; gap: 6px; }
.coverage-value { font-variant-numeric: tabular-nums; white-space: nowrap; font-weight: 600; }
.coverage-value small { color: var(--muted); font-weight: 400; }
.coverage progress { width: 74px; height: 4px; border: 0; border-radius: 4px; color: var(--accent); accent-color: var(--accent); background: var(--grid); }
progress::-webkit-progress-bar { background: var(--grid); border-radius: 4px; }
progress::-webkit-progress-value { background: var(--accent); border-radius: 4px; }
progress::-moz-progress-bar { background: var(--accent); border-radius: 4px; }
.aggregate-score { min-width: 142px; }
.aggregate-score strong { font-size: 14px; }
.aggregate-score .note { font-size: 11px; margin-top: 3px; }
.score-pending { color: var(--muted); font-size: 13px; font-weight: 500; }
.coverage-key dl { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 12px 0 14px; }
.coverage-key dt { font-size: 13px; font-weight: 600; }
.coverage-key dd { margin: 3px 0 0; color: var(--ink-2); font-size: 13px; }
.badge { display: inline-flex; align-items: center; border: 1px solid var(--border); border-radius: 999px; padding: 2px 8px; font-size: 11px; line-height: 1.6; font-weight: 600; color: var(--ink-2); background: var(--raised); }
.badge.info { color: var(--accent-ink); }
.badge.good { color: var(--good); }
.badge.warn { color: var(--warn); }
.badge.bad { color: var(--bad); }
.empty { color: var(--muted); padding: 24px 18px; text-align: center; border: 1px dashed var(--axis); border-radius: var(--radius); }
.empty p { margin: 0 0 12px; }
.workspace { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 22px; align-items: start; padding-top: 22px; }
.case-sidebar { position: sticky; top: 78px; min-width: 0; }
.case-browser { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); margin: 0; overflow: hidden; }
.case-browser > summary { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 12px 14px; font-weight: 650; color: var(--ink); }
.case-browser > summary .note { font-size: 11px; font-weight: 400; }
.case-controls { padding: 0 12px 12px; display: grid; gap: 10px; }
.field { display: grid; gap: 4px; color: var(--muted); font-size: 11px; min-width: 0; }
select, input[type="search"] { color: var(--ink); background: var(--raised); border: 1px solid var(--border); border-radius: 8px; padding: 7px 9px; min-height: 38px; min-width: 0; max-width: 100%; }
.field select, .field input { width: 100%; font-size: 12px; }
.filter-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.task-list { list-style: none; margin: 0; padding: 0; max-height: calc(100vh - 372px); min-height: 190px; overflow: auto; border-top: 1px solid var(--border); scrollbar-width: thin; }
.task-list button { width: 100%; text-align: left; background: transparent; border: 0; border-bottom: 1px solid var(--grid); padding: 11px 14px; color: var(--ink); font: inherit; font-size: 12px; display: grid; gap: 5px; }
.task-list button:hover { background: var(--raised); }
.task-list button[aria-current="true"] { background: color-mix(in srgb, var(--accent) 11%, transparent); box-shadow: inset 3px 0 0 var(--accent); }
.case-name { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; font-weight: 550; }
.case-meta { color: var(--muted); display: flex; justify-content: space-between; gap: 6px; font-size: 10px; }
.case-coverage { font-variant-numeric: tabular-nums; white-space: nowrap; }
.list-message { color: var(--muted); padding: 16px 12px; font-size: 12px; }
.comparison-workspace { min-width: 0; }
.workspace-heading { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 12px; margin-bottom: 6px; }
.workspace-heading .kicker { margin: 0; }
.workspace-heading .note { font-size: 11px; }
.task-heading { display: flex; align-items: start; justify-content: space-between; gap: 12px; }
.task-heading h1 { font-size: clamp(21px, 2vw, 30px); margin: 0 0 8px; line-height: 1.3; max-width: 1150px; }
.case-pagination { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.case-pagination .note { white-space: nowrap; font-size: 11px; }
.case-pagination .btn { width: 34px; padding: 5px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 10px; }
.tag { font-size: 11px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--ink-2); background: var(--surface); }
.task-brief-summary { color: var(--ink-2); font-size: 13px; margin: 0 0 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; max-width: 1250px; }
.task-brief { font-size: 13px; margin: 0 0 14px; }
details > summary { cursor: pointer; color: var(--ink-2); }
.task-brief p { color: var(--ink-2); margin: 8px 0; }
.comparison-toolbar { position: relative; z-index: 4; display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; padding: 12px 0 16px; border-top: 1px solid var(--border); }
.model-picker { position: relative; margin: 0; }
.model-picker > summary { list-style: none; font-size: 13px; }
.model-picker > summary::-webkit-details-marker { display: none; }
.model-picker > summary::after { content: "⌄"; color: var(--muted); margin-left: 4px; }
.model-picker[open] > summary { border-color: var(--accent); }
.selection-count { color: var(--muted); font-size: 11px; font-weight: 400; }
.model-picker-panel { position: absolute; top: calc(100% + 6px); left: 0; width: min(430px, calc(100vw - 40px)); background: var(--raised); border: 1px solid var(--axis); border-radius: var(--radius); padding: 14px; box-shadow: 0 10px 30px rgba(0, 0, 0, .14); max-height: 70vh; overflow: auto; }
.model-picker-panel > .note { font-size: 12px; margin-bottom: 10px; }
.model-option { display: flex; gap: 10px; align-items: start; padding: 9px 2px; border-top: 1px solid var(--border); cursor: pointer; }
.model-option input { width: 17px; height: 17px; margin: 3px 0 0; flex-shrink: 0; accent-color: var(--accent); }
.model-option .model-name { font-size: 13px; }
.model-option .model-identity { margin: 2px 0 0; font-size: 11px; }
.viewport-label { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; font-size: 12px; color: var(--muted); }
.viewport-label select { font-size: 12px; }
.comparison-help { margin-left: auto; font-size: 11px; }
.comparison-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 460px), 1fr)); gap: 16px; align-items: start; }
.comparison-grid > .empty { grid-column: 1 / -1; }
.preview-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); min-width: 0; overflow: hidden; box-shadow: var(--shadow); }
.preview-card.is-reference { border-color: color-mix(in srgb, var(--accent) 30%, var(--border)); }
.preview-card-head { padding: 14px 14px 10px; }
.preview-title-row { display: flex; align-items: start; justify-content: space-between; gap: 10px; }
.preview-title-row h2 { font-size: 16px; line-height: 1.35; }
.preview-identity { color: var(--muted); font-size: 11px; margin: 3px 0 8px; overflow-wrap: anywhere; }
.remove-model { border: 1px solid transparent; background: transparent; color: var(--muted); width: 30px; height: 30px; padding: 0; border-radius: 6px; font-size: 18px; flex-shrink: 0; }
.remove-model:hover { border-color: var(--border); color: var(--ink); }
.preview-status { display: flex; flex-wrap: wrap; gap: 5px; align-items: center; min-height: 22px; }
.score-strip { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; padding: 9px 14px; background: var(--raised); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); min-height: 44px; }
.score-component { display: inline-flex; align-items: baseline; gap: 6px; font-size: 12px; font-variant-numeric: tabular-nums; }
.score-component span { color: var(--muted); font-size: 11px; }
.score-component strong { font-weight: 600; }
.score-component.pending strong { color: var(--muted); font-weight: 400; font-size: 11px; }
.score-strip > .note { font-size: 11px; }
.preview-viewport { height: clamp(460px, 64vh, 720px); overflow: auto; background: #fff; position: relative; overscroll-behavior: contain; }
.preview-viewport[data-viewport="fit"] > iframe { display: block; width: 100%; height: 100%; border: 0; background: #fff; }
.preview-viewport[data-viewport="desktop"] > iframe { display: block; width: 1280px; height: 800px; border: 0; background: #fff; }
.preview-viewport[data-viewport="mobile"] > iframe { display: block; width: 390px; height: 844px; border: 0; margin-inline: auto; background: #fff; }
.preview-viewport > img { display: block; width: 100%; min-height: 100%; object-fit: contain; object-position: top center; }
.preview-viewport[data-viewport="mobile"] > img { width: 390px; margin-inline: auto; }
.preview-unavailable { display: grid; place-content: center; gap: 10px; height: 100%; padding: 30px; color: var(--muted); background: var(--surface); text-align: center; }
.preview-unavailable strong { color: var(--ink-2); font-size: 16px; }
.preview-unavailable p { margin: 0; font-size: 13px; max-width: 440px; }
.preview-unavailable .btn { justify-self: center; }
.preview-footer { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; padding: 10px 14px; border-top: 1px solid var(--border); }
.preview-footer .note { margin-left: auto; font-size: 10px; }
.preview-measurements { padding: 0 14px 12px; font-size: 12px; }
.preview-measurements:empty { display: none; }
.preview-measurements details { margin: 2px 0 0; }
.preview-measurements ul { padding-left: 18px; margin: 8px 0; color: var(--ink-2); }
.preview-measurements li { margin: 4px 0; overflow-wrap: anywhere; }
.preview-measurements .note { font-size: 11px; margin: 7px 0 0; }
#task-evidence { margin-top: 22px; }
.task-evidence { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.task-evidence details { min-width: 0; margin: 0; }
.task-evidence summary { font-size: 13px; font-weight: 600; }
.checks { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 8px; font-size: 12px; }
.checks li { display: flex; gap: 8px; align-items: baseline; }
.checks .crit { font-size: 9px; font-weight: 700; color: var(--accent-ink); }
.prompt, .source-code { white-space: pre-wrap; overflow-wrap: anywhere; background: var(--raised); border: 1px solid var(--border); border-radius: 8px; padding: 14px; font: 12px/1.65 ui-monospace, SFMono-Regular, Menlo, monospace; max-height: 420px; overflow: auto; }
dialog { width: 97vw; height: 94vh; max-width: 1900px; max-height: 1200px; padding: 0; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); color: var(--ink); overflow: hidden; }
dialog::backdrop { background: rgba(0, 0, 0, .55); }
.viewer-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--border); min-height: 82px; }
.viewer-head .kicker { font-size: 10px; margin-bottom: 2px; }
.viewer-head h2 { font-size: 17px; }
.viewer-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.viewer-actions select { font-size: 12px; }
.viewer-body { height: calc(100% - 82px); overflow: auto; }
.viewer-body .preview-viewport { height: 100%; }
.viewer-body .source-code { margin: 16px; max-height: none; }
.viewer-body > .note { padding: 18px; }
.source-preview { background: var(--surface); display: flex; flex-direction: column; }
.source-preview > .note { padding: 16px 18px 0; font-size: 12px; }
.source-preview .source-code { flex: 1; margin: 12px; max-height: none; }
.formula-card p { color: var(--ink-2); }
.formula-card .note { font-size: 13px; }
.method-instructions { margin-top: 16px; }
.method-instructions p { color: var(--ink-2); }
.more { margin: 12px 0 24px; }
.foot { color: var(--muted); font-size: 12px; padding: 22px 0 32px; border-top: 1px solid var(--border); margin-top: 28px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
@media (max-width: 1200px) {
  .workspace { grid-template-columns: 210px minmax(0, 1fr); gap: 16px; }
  .comparison-grid { grid-template-columns: repeat(auto-fit, minmax(min(100%, 350px), 1fr)); }
  .comparison-help { display: none; }
  .coverage-key dl { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .workspace { grid-template-columns: 1fr; }
  .case-sidebar { position: static; }
  .case-controls { grid-template-columns: 1.1fr 1fr 1fr; align-items: end; }
  .case-controls .filter-pair { grid-template-columns: 1fr 1fr; }
  .task-list { max-height: 175px; min-height: 0; }
  .comparison-grid { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
  .task-heading { flex-wrap: wrap; }
  .task-evidence { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .wrap, .workspace-wrap { width: calc(100% - 24px); }
  .top-row { gap: 6px; height: 56px; }
  .brand { gap: 5px; font-size: 14px; }
  .brand svg { width: 18px; height: 18px; }
  nav { gap: 0; }
  nav a { padding: 8px 6px; font-size: 11px; }
  .theme { width: 32px; height: 34px; border-radius: 8px; }
  .hero { padding-top: 32px; }
  .lede { font-size: 15px; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat { padding: 12px; }
  .stat .value { font-size: 24px; }
  .stat .label { font-size: 11px; }
  .coverage-key dl { grid-template-columns: 1fr 1fr; gap: 12px; }
  .workspace { padding-top: 12px; gap: 16px; }
  .case-controls { grid-template-columns: 1fr 1fr; }
  .case-controls > .field:first-child { grid-column: 1 / -1; }
  .case-controls .filter-pair { grid-template-columns: 1fr 1fr; grid-column: 1 / -1; }
  .case-controls .filter-pair .field:last-child { display: grid; }
  .case-controls > .field:last-child { grid-column: 1 / -1; }
  .case-controls { gap: 6px; }
  .task-list { max-height: 145px; }
  .case-browser > summary { padding: 10px 12px; }
  .task-heading h1 { font-size: 21px; }
  .case-pagination { margin-bottom: 6px; }
  .comparison-toolbar { gap: 10px; }
  .viewport-label { width: 100%; justify-content: space-between; }
  .comparison-grid { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .preview-viewport { height: 560px; }
  .model-picker-panel { width: calc(100vw - 30px); }
  .preview-card-head { padding: 12px; }
  .preview-title-row h2 { font-size: 15px; }
  .score-strip { gap: 7px 12px; padding-inline: 12px; }
  .score-component { gap: 4px; font-size: 11px; }
  dialog { width: 98vw; height: 95vh; border-radius: 10px; }
  .viewer-head { padding: 10px; flex-wrap: wrap; gap: 8px; min-height: 114px; }
  .viewer-actions { width: 100%; justify-content: space-between; gap: 5px; }
  .viewer-body { height: calc(100% - 114px); }
  .viewer-head h2 { font-size: 14px; }
  .viewer-actions .btn { font-size: 12px; min-height: 36px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }