:root {
  color-scheme: light;
  --bg: #fcfcfb; --surface: #ffffff; --surface-2: #f4f3ef; --border: #e6e5e0;
  --ink: #0b0b0b; --ink-2: #52514e; --ink-3: #8a8984;
  --accent: #2a78d6; --accent-soft: #e8f1fc; --pos: #1c7a4a; --neg: #c03a39;
  --radius: 10px; --max: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --callout-border: #cde2fb; --warn-bg: #fff7e6; --warn-border: #f4dca3; --warn-ink: #8a5a00;
  --null-bg: #f1f0ec; --ok-bg: #e3f4ea; --ok-border: #bfe3cd;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #121316; --surface: #1a1b1f; --surface-2: #23252a; --border: #33353b;
    --ink: #ececea; --ink-2: #b4b3ae; --ink-3: #85847f;
    --accent: #6aa8f0; --accent-soft: #172a40; --pos: #5cc98c; --neg: #f07a78;
    --callout-border: #24476e; --warn-bg: #2e2513; --warn-border: #5c4a1f; --warn-ink: #e8c27a;
    --null-bg: #26272b; --ok-bg: #16301f; --ok-border: #24553a;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.55; }
a { color: var(--accent); text-decoration: none; } a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: .88em; background: var(--surface-2); padding: .1em .35em; border-radius: 4px; }
pre { background: var(--surface-2); padding: 12px 14px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; padding: 0; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
header.site { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
header.site .wrap { display: flex; align-items: center; gap: 24px; min-height: 58px; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--ink); letter-spacing: -.01em; white-space: nowrap; }
.brand span { color: var(--accent); }
nav.main { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
nav.main a { color: var(--ink-2); padding: 6px 10px; border-radius: 6px; font-size: .94rem; }
nav.main a:hover { background: var(--surface-2); text-decoration: none; }
nav.main a.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.asof { font-size: .82rem; color: var(--ink-2); background: var(--surface-2); border: 1px solid var(--border); padding: 3px 10px; border-radius: 999px; white-space: nowrap; }
main { padding: 28px 0 40px; }
h1 { font-size: 1.9rem; letter-spacing: -.02em; margin: 0 0 6px; line-height: 1.2; }
h2 { font-size: 1.3rem; margin: 36px 0 10px; letter-spacing: -.01em; }
h3 { font-size: 1.05rem; margin: 22px 0 8px; }
.lede { color: var(--ink-2); font-size: 1.06rem; max-width: 820px; margin: 0 0 8px; }
.byline { color: var(--ink-3); font-size: .88rem; margin: 6px 0 22px; }
.grid { display: grid; gap: 16px; }
.grid.k4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.c3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 860px) { .grid.k4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .grid.c2, .grid.c3 { grid-template-columns: minmax(0, 1fr); } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; }
.kpi .label { color: var(--ink-2); font-size: .84rem; }
.kpi .value { font-size: 1.6rem; font-weight: 700; letter-spacing: -.02em; margin-top: 2px; }
.kpi .sub { color: var(--ink-3); font-size: .8rem; }
.chart { width: 100%; min-height: 360px; }
.chart.tall { min-height: 440px; }
.note { color: var(--ink-2); font-size: .86rem; margin: 6px 0 0; }
.callout { background: var(--accent-soft); border: 1px solid var(--callout-border); border-radius: var(--radius); padding: 14px 18px; }
.callout.warn { background: var(--warn-bg); border-color: var(--warn-border); }
.summary ul { margin: 6px 0 0; padding-left: 20px; }
.controls { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin: 8px 0 14px; }
.controls label { font-size: .88rem; color: var(--ink-2); }
select, input[type=search] { font: inherit; font-size: .92rem; padding: 6px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--ink); }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button { font: inherit; font-size: .88rem; border: 0; background: var(--surface); padding: 6px 12px; cursor: pointer; color: var(--ink-2); }
.seg button.on { background: var(--accent); color: #fff; }
.tablewrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table.data { border-collapse: collapse; width: 100%; font-size: .88rem; }
table.data th, table.data td { padding: 7px 10px; border-bottom: 1px solid var(--border); text-align: right; white-space: nowrap; }
table.data th { background: var(--surface-2); color: var(--ink-2); font-weight: 600; position: sticky; top: 0; cursor: pointer; user-select: none; }
table.data th.l, table.data td.l { text-align: left; }
table.data tr:last-child td { border-bottom: 0; }
table.data td.pos { color: var(--pos); } table.data td.neg { color: var(--neg); }
table.data td.muted { color: var(--ink-3); }
details { margin: 12px 0; } details summary { cursor: pointer; color: var(--accent); font-weight: 600; }
.prose { max-width: 820px; }
.prose table { border-collapse: collapse; font-size: .88rem; margin: 10px 0; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--border); padding: 5px 8px; }
.prose th { background: var(--surface-2); }
.tag { display: inline-block; font-size: .74rem; font-weight: 600; padding: 1px 8px; border-radius: 999px; background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--border); }
.tag.null { background: var(--null-bg); } .tag.supported { background: var(--ok-bg); color: var(--pos); border-color: var(--ok-border); }
.tag.mixed { background: var(--warn-bg); color: var(--warn-ink); border-color: var(--warn-border); }
footer.site { border-top: 1px solid var(--border); color: var(--ink-3); font-size: .85rem; padding: 20px 0 36px; }
footer.site a { color: var(--ink-2); }
.toc { font-size: .9rem; color: var(--ink-2); display: flex; flex-wrap: wrap; gap: 4px 14px; }
.grid > *, .card { min-width: 0; }
.prose code, li code, p code { overflow-wrap: anywhere; }