:root {
  color-scheme: light;
  --bg: #f6f6f4;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --border: #dedcd6;
  --text: #0b0b0b;
  --text-2: #52514e;
  --text-3: #6f6e69;
  --link: #1c5cab;
  --accent: #4f46e5;
  --banner-1: #4f46e5;
  --banner-2: #7c3aed;
  --track: #ebe9e4;
  --grid: #d7d5cf;
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --s4: #eda100;
  --s5: #e87ba4;
  --neutral: #a3a29c;
  --pos: #2a78d6;
  --neg: #e34948;
  --good: #047857;
  --mid: #b45309;
  --low: #c81e1e;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121211;
    --surface: #1a1a19;
    --surface-2: #242422;
    --border: #383835;
    --text: #ffffff;
    --text-2: #c3c2b7;
    --text-3: #a09f97;
    --link: #86b6ef;
    --accent: #9085e9;
    --banner-1: #3730a3;
    --banner-2: #5b21b6;
    --track: #2a2a28;
    --grid: #44443f;
    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
    --s4: #c98500;
    --s5: #d55181;
    --neutral: #75746e;
    --pos: #3987e5;
    --neg: #e66767;
    --good: #34d399;
    --mid: #fbbf24;
    --low: #f87171;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211;
  --surface: #1a1a19;
  --surface-2: #242422;
  --border: #383835;
  --text: #ffffff;
  --text-2: #c3c2b7;
  --text-3: #a09f97;
  --link: #86b6ef;
  --accent: #9085e9;
  --banner-1: #3730a3;
  --banner-2: #5b21b6;
  --track: #2a2a28;
  --grid: #44443f;
  --s1: #3987e5;
  --s2: #d95926;
  --s3: #199e70;
  --s4: #c98500;
  --s5: #d55181;
  --neutral: #75746e;
  --pos: #3987e5;
  --neg: #e66767;
  --good: #34d399;
  --mid: #fbbf24;
  --low: #f87171;
  --shadow: none;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--link); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em;
  background: var(--surface-2); padding: 1px 4px; border-radius: 4px; }
h1, h2, h3 { line-height: 1.25; }
h2 { font-size: 1.15rem; margin: 28px 0 6px; }
h3 { font-size: 1rem; margin: 18px 0 6px; }

.banner { background: linear-gradient(135deg, var(--banner-1), var(--banner-2)); color: #fff; }
.banner-inner { max-width: 1200px; margin: 0 auto; padding: 22px 16px 18px; display: flex;
  justify-content: space-between; align-items: flex-start; gap: 12px; }
.banner h1 { margin: 0 0 4px; font-size: 1.6rem; }
.banner .subtitle { margin: 0; opacity: 0.92; }
.banner .meta { margin: 8px 0 0; opacity: 0.8; font-size: 0.85rem; }
.theme-toggle { flex: none; background: rgba(255, 255, 255, 0.15); color: #fff; border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px; width: 36px; height: 36px; display: grid; place-items: center; cursor: pointer; }
.theme-toggle:hover { background: rgba(255, 255, 255, 0.25); }

.tabs { position: sticky; top: 0; z-index: 5; background: var(--surface); border-bottom: 1px solid var(--border);
  display: flex; gap: 2px; overflow-x: auto; padding: 0 max(16px, calc((100% - 1200px) / 2 + 16px));
  scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tabs button { flex: none; background: none; border: 0; border-bottom: 3px solid transparent; color: var(--text-2);
  padding: 12px 12px 9px; font: inherit; font-weight: 500; cursor: pointer; white-space: nowrap; }
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }

main { max-width: 1200px; margin: 0 auto; padding: 8px 16px 48px; }
.panel { min-width: 0; }
.hint { color: var(--text-3); font-size: 0.85rem; margin: 4px 0 10px; }
.notice { padding: 12px 14px; border-radius: 8px; margin: 16px 0; border: 1px solid var(--border); background: var(--surface); }
.notice.error { border-color: var(--low); }

.controls { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: flex-end; margin: 16px 0 8px; }
.field { display: flex; flex-direction: column; gap: 4px; font-size: 0.8rem; color: var(--text-2); min-width: 0; }
.field.grow { flex: 1 1 260px; }
.field select, .field input[type="range"] { font: inherit; font-size: 0.95rem; color: var(--text); }
select { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; max-width: 100%; }
.field output { color: var(--text); font-weight: 600; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--surface); }
.seg button { background: none; border: 0; padding: 7px 14px; font: inherit; color: var(--text-2); cursor: pointer; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button[aria-checked="true"] { background: var(--accent); color: #fff; }
.pager { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 0.85rem; color: var(--text-2); }
.pager button, .chips button { font: inherit; font-size: 0.9rem; background: var(--surface); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 12px; cursor: pointer; }
.pager button:disabled { opacity: 0.45; cursor: default; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips button { border-radius: 999px; padding: 4px 12px; display: inline-flex; align-items: center; gap: 6px; }
.chips button[aria-pressed="true"] { border-color: var(--text-2); font-weight: 600; }
.chips .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--track); border: 1px solid var(--border); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px; box-shadow: var(--shadow); }
.card h3 { margin-top: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 14px 0 6px; }
.metric-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px;
  text-align: center; box-shadow: var(--shadow); }
.metric-card .label { font-size: 0.75rem; color: var(--text-3); margin-bottom: 4px; }
.metric-card .value { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.metric-card .value.good { color: var(--good); }
.metric-card .value.mid { color: var(--mid); }
.metric-card .value.low { color: var(--low); }

.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 28px; }
@media (max-width: 820px) { .grid2 { grid-template-columns: minmax(0, 1fr); } }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); max-width: 100%; }
.data-table { border-collapse: collapse; width: 100%; font-size: 0.86rem; font-variant-numeric: tabular-nums; }
.data-table th, .data-table td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table th { font-weight: 600; color: var(--text-2); background: var(--surface-2); white-space: nowrap; }
.data-table th.sortable { cursor: pointer; user-select: none; }
.data-table th.sortable:hover { color: var(--text); }
.data-table th .arrow { font-size: 0.7em; margin-left: 3px; }
.data-table td.num { text-align: right; white-space: nowrap; }
.data-table th.num { text-align: right; }
.data-table td.empty { color: var(--text-3); text-align: center; padding: 14px; }
#ov-table th { white-space: normal; min-width: 128px; vertical-align: bottom; font-size: 0.8rem; }
#ov-table td { white-space: nowrap; }
.sticky-col th:nth-child(1), .sticky-col td:nth-child(1) { position: sticky; left: 0; background: var(--surface); z-index: 1; }
.sticky-col th:nth-child(1) { background: var(--surface-2); }
#ov-table th:nth-child(1), #ov-table td:nth-child(1) { min-width: 56px; }
#ov-table td:nth-child(2) { white-space: nowrap; font-weight: 500; }
@media (min-width: 821px) {
  #ov-table th:nth-child(2), #ov-table td:nth-child(2) { position: sticky; left: 56px; z-index: 1; background: var(--surface); }
  #ov-table th:nth-child(2) { background: var(--surface-2); }
}

/* charts */
.chart { margin: 10px 0 4px; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 0.8rem; color: var(--text-2); margin-bottom: 8px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.bars { display: grid; grid-template-columns: minmax(80px, max-content) minmax(0, 1fr) auto; gap: 4px 10px; align-items: center; }
.bars .lbl { font-size: 0.82rem; color: var(--text); text-align: right; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 260px; }
.bars .val { font-size: 0.8rem; color: var(--text-2); font-variant-numeric: tabular-nums; white-space: nowrap; text-align: right; }
.bars .group-gap { grid-column: 1 / -1; height: 4px; }
.track { position: relative; height: 16px; background: var(--track); border-radius: 4px; }
.track.multi { height: auto; display: flex; flex-direction: column; gap: 2px; background: none; }
.track.multi .sub { position: relative; height: 12px; background: var(--track); border-radius: 4px; }
.bar { position: absolute; top: 0; bottom: 0; left: 0; border-radius: 0 4px 4px 0; min-width: 1px; }
.bar.neg { border-radius: 4px 0 0 4px; }
.zero { position: absolute; top: -2px; bottom: -2px; width: 1px; background: var(--text-3); }
.ci { position: absolute; top: 50%; height: 1.5px; background: var(--text); opacity: 0.7; }
.ci::before, .ci::after { content: ""; position: absolute; top: -3px; width: 1.5px; height: 7px; background: var(--text); }
.ci::before { left: 0; } .ci::after { right: 0; }
.axis { display: flex; justify-content: space-between; font-size: 0.72rem; color: var(--text-3); grid-column: 2; }
.stack { display: flex; height: 18px; border-radius: 4px; overflow: hidden; background: var(--track); gap: 2px; }
.stack > div { height: 100%; min-width: 0; }
.stack > div:first-child { border-radius: 4px 0 0 4px; }
.stack > div:last-child { border-radius: 0 4px 4px 0; }
[data-tip] { cursor: default; }
.tooltip { position: fixed; z-index: 50; pointer-events: none; background: var(--text); color: var(--bg); font-size: 0.8rem;
  padding: 6px 9px; border-radius: 6px; max-width: 280px; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25); white-space: pre-line; }

.chain-card p { margin: 4px 0; }
.chain-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 10px; }
.chain-list ol, .chain-card ol { margin: 6px 0 0; padding-left: 22px; }
.chain-list .card p { margin: 4px 0; color: var(--text-2); font-size: 0.88rem; }

.variant-text { margin: 10px 0 0; }
.variant-text strong { display: block; font-size: 0.82rem; color: var(--text-2); }
.variant-text blockquote { margin: 3px 0 0; padding: 4px 0 4px 12px; border-left: 3px solid var(--border); }
.tag { display: inline-block; font-size: 0.75rem; padding: 1px 8px; border-radius: 999px; background: var(--surface-2);
  border: 1px solid var(--border); color: var(--text-2); margin-right: 4px; }
.optimal-block { margin-bottom: 12px; }
.optimal-block .best { font-weight: 600; }

.justifications .model-name { font-weight: 600; margin: 14px 0 4px; font-size: 0.9rem; }
.justifications blockquote { margin: 0 0 6px; padding: 6px 10px; border-left: 3px solid var(--border); background: var(--surface);
  border-radius: 0 6px 6px 0; font-size: 0.86rem; color: var(--text); overflow-wrap: anywhere; }
.justifications .meta { font-size: 0.72rem; color: var(--text-3); display: block; margin-bottom: 2px; }
.justifications .empty, .chart .empty { color: var(--text-3); font-size: 0.86rem; }

.data-files td a { font-weight: 600; overflow-wrap: anywhere; }
pre.code { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px; overflow-x: auto; font-size: 0.82rem; }
.prose { max-width: 900px; }
details summary { cursor: pointer; color: var(--text-2); font-size: 0.85rem; margin: 6px 0; }

@media (max-width: 600px) {
  .banner h1 { font-size: 1.3rem; }
  .bars { grid-template-columns: minmax(70px, 38%) minmax(0, 1fr) auto; }
  .bars .lbl { max-width: none; }
  .seg button { padding: 7px 10px; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-card .value { font-size: 1.25rem; }
}