:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f2f1ed;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #1f3a60;
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #eda100; --s5: #e87ba4;
  --good: #0ca30c; --warning: #fab219; --serious: #ec835a; --critical: #d03b3b;
  --warn-bg: #fdf3dc; --warn-ink: #6b4a00;
  --info-bg: #e8f1fc; --info-ink: #0d366b;
  --seq: #cde2fb, #9ec5f4, #6da7ec, #3987e5, #256abf, #184f95, #0d366b;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --page: #0d0d0d; --surface: #1a1a19; --surface-2: #232321;
    --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781;
    --grid: #2c2c2a; --axis: #383835; --border: rgba(255, 255, 255, 0.10);
    --accent: #9ec5f4;
    --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500; --s5: #d55181;
    --warn-bg: #2e2510; --warn-ink: #fad27a;
    --info-bg: #14233a; --info-ink: #cde2fb;
    --seq: #1c2a3d, #184f95, #256abf, #3987e5, #6da7ec, #9ec5f4, #cde2fb; /* on dark, more = brighter */
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --surface-2: #232321;
  --ink: #ffffff; --ink-2: #c3c2b7; --muted: #898781;
  --grid: #2c2c2a; --axis: #383835; --border: rgba(255, 255, 255, 0.10);
  --accent: #9ec5f4;
  --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500; --s5: #d55181;
  --warn-bg: #2e2510; --warn-ink: #fad27a;
  --info-bg: #14233a; --info-ink: #cde2fb;
  --seq: #1c2a3d, #184f95, #256abf, #3987e5, #6da7ec, #9ec5f4, #cde2fb; /* on dark, more = brighter */
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--page); color: var(--ink); font: 15px/1.5 var(--font); }
a { color: var(--s1); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 6px 10px; z-index: 10; }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 24px; background: var(--surface); border-bottom: 1px solid var(--border); }
.brand { display: flex; gap: 12px; align-items: center; }
.brand-mark { width: 28px; height: 28px; border-radius: 7px; flex: none;
  background: linear-gradient(135deg, var(--s1) 0 50%, var(--s3) 50% 100%); }
.brand-title { font-weight: 650; font-size: 16px; }
.brand-sub { color: var(--ink-2); font-size: 13px; }

button, select, input { font: inherit; color: inherit; }
button { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 12px; cursor: pointer; }
button:hover { border-color: var(--axis); }
button.ghost { background: transparent; }
select { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px; max-width: 100%; }
:focus-visible { outline: 2px solid var(--s1); outline-offset: 2px; }

.tabs { display: flex; gap: 4px; padding: 0 24px; background: var(--surface);
  border-bottom: 1px solid var(--border); overflow-x: auto; scrollbar-width: thin; }
.tabs button { border: 0; border-radius: 0; background: transparent; padding: 12px 12px 10px;
  color: var(--ink-2); border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--s1); font-weight: 600; }

main { max-width: 1280px; margin: 0 auto; padding: 24px; }
.panel[hidden] { display: none; }
h1 { font-size: 30px; line-height: 1.2; margin: 8px 0 8px; }
h2 { font-size: 18px; margin: 28px 0 12px; }
h3 { font-size: 15px; margin: 0 0 10px; }
.lede { color: var(--ink-2); font-size: 17px; max-width: 820px; margin: 0 0 20px; }
.lede.small { font-size: 15px; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.tile .v { font-size: 28px; font-weight: 650; }
.tile .k { color: var(--ink-2); font-size: 13px; }

.alert { background: var(--warn-bg); color: var(--warn-ink); border-radius: var(--radius); padding: 12px 16px;
  border-left: 4px solid var(--warning); margin: 8px 0 8px; }
.alert a { color: inherit; font-weight: 600; }
.alert.info { background: var(--info-bg); color: var(--info-ink); border-left-color: var(--s1); }
.idx h4 { margin: 0 0 6px; font-size: 15px; }
.idx table { width: 100%; border-collapse: collapse; font-size: 13px; }
.idx td, .idx th { padding: 4px 6px; border-bottom: 1px solid var(--grid); text-align: left; }
.idx td.n, .idx th.n { text-align: right; font-variant-numeric: tabular-nums; }
.idx .excl td { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.card p { margin: 0; color: var(--ink-2); }
.card-kicker { font-size: 12px; font-weight: 650; text-transform: uppercase; letter-spacing: .04em; color: var(--good); margin-bottom: 6px; }
.card-kicker.warn { color: var(--serious); }
.card-kicker.muted { color: var(--muted); }

.filters { display: flex; flex-wrap: wrap; gap: 16px; align-items: end; margin-bottom: 16px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--ink-2); }
label.check { flex-direction: row; align-items: center; gap: 6px; }
label output { color: var(--ink); font-weight: 600; }
.filters input[type=range] { width: 220px; }

.grid-2 { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 16px; }
.chart-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; min-width: 0; }
.card-head { display: flex; justify-content: space-between; align-items: end; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.card-head h3 { margin: 0; }
.chart { width: 100%; height: 340px; }
.chart.tall { height: 440px; }
.chart.xtall { height: 980px; }
.chart-note { color: var(--muted); font-size: 12.5px; margin: 8px 0 0; }

.meta dl { margin: 0; display: grid; grid-template-columns: 110px 1fr; gap: 6px 12px; font-size: 14px; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; overflow-wrap: anywhere; }
.meta .caveat { margin-top: 12px; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 8px; }
.chip { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); border-radius: 999px;
  padding: 3px 6px 3px 10px; font-size: 13px; background: var(--surface-2); }
.chip i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.chip button { border: 0; background: transparent; padding: 0 4px; line-height: 1; }

.table-wrap { overflow-x: auto; }
table.data { border-collapse: collapse; width: 100%; font-size: 14px; }
table.data th, table.data td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--grid); vertical-align: top; }
table.data th { color: var(--ink-2); font-weight: 600; border-bottom-color: var(--axis); }
table.num td:not(:first-child), table.num th:not(:first-child) { text-align: right; font-variant-numeric: tabular-nums; }
tr.flag td { background: color-mix(in srgb, var(--warning) 14%, transparent); }

.badge { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; font-weight: 600; border-radius: 999px; padding: 2px 9px; white-space: nowrap; border: 1px solid var(--border); }
.badge::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.badge.good { color: var(--good); }
.badge.bad { color: var(--critical); }
.badge.warn { color: var(--serious); }
.badge.neutral { color: var(--muted); }
.badges .badge { white-space: normal; }
.badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }

.sim { display: grid; grid-template-columns: minmax(280px, 380px) minmax(0, 1fr); gap: 16px; }
.sim-controls { display: flex; flex-direction: column; gap: 12px; align-self: start; }
.presets { display: flex; flex-wrap: wrap; gap: 6px; }
.presets .label { width: 100%; font-size: 13px; color: var(--ink-2); }
.presets button { font-size: 13px; padding: 4px 9px; }
.slider { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; align-items: center; font-size: 13px; }
.slider span { color: var(--ink-2); }
.slider output { font-variant-numeric: tabular-nums; font-weight: 600; color: var(--ink); }
.slider input { grid-column: 1 / -1; width: 100%; }
.slider small { grid-column: 1 / -1; color: var(--muted); }
.disabled-block { border: 1px dashed var(--axis); border-radius: 8px; padding: 8px 12px; opacity: .6; }
.disabled-block legend { font-size: 13px; color: var(--ink-2); }
.sim-headline .big { font-size: 34px; font-weight: 650; line-height: 1.1; }
.sim-headline .sub { color: var(--ink-2); margin-top: 4px; }

.issues li { margin-bottom: 8px; color: var(--ink-2); }
.issues strong { color: var(--ink); }
.prose p, .prose li { color: var(--ink-2); }
.eq { font-family: "Cambria Math", Cambria, serif; font-size: 16px; color: var(--ink) !important; overflow-x: auto; }
.cite { font-size: 14px; }
.muted-text { color: var(--muted); font-size: 13px; }
code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.foot { text-align: center; color: var(--muted); font-size: 12.5px; padding: 24px 16px 40px; }

@media (max-width: 900px) {
  .grid-2, .sim { grid-template-columns: 1fr; }
  main { padding: 16px; }
  .topbar { padding: 12px 16px; }
  .tabs { padding: 0 8px; }
  .chart.xtall { height: 1100px; }
  .brand-sub { display: none; }
}
@media (forced-colors: active) { .badge::before { background: CanvasText; } }