:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --ink-3: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --ring: rgba(11, 11, 11, 0.10);
  --s1: #2a78d6;   /* blue: clears / clinical above */
  --s2: #eb6834;   /* orange: below / other above */
  --s3: #1baf7a;   /* aqua: below (ladder mix) */
  --muted-bar: #898781;
  --range: #e1e0d9;
  --accent-bg: #eef4fc;
  --seq-0: #b7d3f6; --seq-1: #3987e5; --seq-2: #0d366b;   /* low to high share: pale to dark */
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --page: #0d0d0d; --surface: #1a1a19; --ink: #ffffff; --ink-2: #c3c2b7; --ink-3: #898781;
    --grid: #2c2c2a; --axis: #383835; --ring: rgba(255, 255, 255, 0.10);
    --s1: #3987e5; --s2: #d95926; --s3: #199e70; --muted-bar: #6b6a66; --range: #4a4a47;
    --accent-bg: #16233a;
    --seq-0: #184f95; --seq-1: #3987e5; --seq-2: #cde2fb;   /* on dark: dim to bright */
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d; --surface: #1a1a19; --ink: #ffffff; --ink-2: #c3c2b7; --ink-3: #898781;
  --grid: #2c2c2a; --axis: #383835; --ring: rgba(255, 255, 255, 0.10);
  --s1: #3987e5; --s2: #d95926; --s3: #199e70; --muted-bar: #6b6a66; --range: #4a4a47;
  --accent-bg: #16233a;
  --seq-0: #184f95; --seq-1: #3987e5; --seq-2: #cde2fb;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--page); color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
a { color: var(--s1); }
h1 { font-size: 22px; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 17px; margin: 0 0 6px; }
h3 { font-size: 14px; margin: 18px 0 6px; color: var(--ink-2); }
.sub { margin: 2px 0 0; color: var(--ink-2); font-size: 14px; }

.top { background: var(--surface); border-bottom: 1px solid var(--ring); position: sticky; top: 0; z-index: 5; }
.top > .wrap:first-child { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; padding-top: 14px; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; font-size: 13px; color: var(--ink-2); }
.bench-note { color: var(--ink-3); font-variant-numeric: tabular-nums; }
select, button {
  font: inherit; color: var(--ink); background: var(--surface);
  border: 1px solid var(--axis); border-radius: 8px; padding: 6px 10px; min-height: 36px;
}
button { cursor: pointer; }
.ghost { background: transparent; }
.tabs { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; padding-top: 8px; }
.tabs button {
  border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none;
  color: var(--ink-2); white-space: nowrap; padding: 8px 12px;
}
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--s1); font-weight: 600; }

main.wrap { padding-top: 18px; padding-bottom: 24px; }
.card { background: var(--surface); border: 1px solid var(--ring); border-radius: 12px; padding: 18px; margin-bottom: 16px; min-width: 0; }
.card-head { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.grid2 { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 900px) { .grid2 { grid-template-columns: 1fr; } }
.lede { color: var(--ink-2); margin: 0 0 10px; }
.note { color: var(--ink-3); font-size: 12.5px; margin: 10px 0 0; }
.prose p, .prose li { max-width: 78ch; }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--ring); border-radius: 12px; padding: 14px 16px; }
.tile .v { font-size: 30px; font-weight: 650; letter-spacing: -0.02em; }
.tile .k { color: var(--ink-2); font-size: 13.5px; }
.flow li { margin-bottom: 4px; }

.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; color: var(--ink-2); margin: 4px 0 6px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: -1px; }
.legend i.sq { border-radius: 2px; }
.check { font-size: 13px; color: var(--ink-2); display: flex; gap: 6px; align-items: center; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin: 6px 0 10px; }
.facts div { background: var(--accent-bg); border-radius: 8px; padding: 8px 10px; }
.facts b { display: block; font-size: 18px; }
.facts span { font-size: 12px; color: var(--ink-2); }

.chart { width: 100%; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { fill: var(--ink-2); font-size: 12px; }
.chart .val { fill: var(--ink); font-variant-numeric: tabular-nums; }
.chart .grid line { stroke: var(--grid); }
.chart .axis path, .chart .axis line { stroke: var(--axis); }
.chart .ref { stroke: var(--ink-2); stroke-dasharray: 3 3; }
.chart .ref-label { fill: var(--ink-2); font-size: 11.5px; }
.chart .hit { fill: transparent; cursor: pointer; }
.chart .selected { stroke: var(--ink); stroke-width: 2; }

details { margin-top: 10px; }
summary { cursor: pointer; color: var(--ink-2); font-size: 13px; }
table { border-collapse: collapse; width: 100%; font-size: 13px; margin-top: 8px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--grid); vertical-align: top; }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }
.spec th { width: 30%; color: var(--ink-2); font-weight: 600; }
@media (max-width: 600px) { .spec th { width: 40%; } }

.tip {
  position: fixed; pointer-events: none; z-index: 20; max-width: 280px;
  background: var(--surface); color: var(--ink); border: 1px solid var(--ring);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15); border-radius: 8px; padding: 8px 10px; font-size: 12.5px;
}
.tip b { display: block; margin-bottom: 2px; }
.tip .row { display: flex; justify-content: space-between; gap: 12px; font-variant-numeric: tabular-nums; }
.tip .row span:first-child { color: var(--ink-2); }
.tip .tipnote { margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--grid); color: var(--ink-2); font-size: 12px; line-height: 1.4; }
.legend .ramp { display: inline-block; width: 160px; height: 10px; border-radius: 5px; margin: 0 8px; vertical-align: -1px; }
.foot { color: var(--ink-3); font-size: 12.5px; padding-bottom: 24px; }