:root {
  --paper: #f4f1ea; --ink: #1a1817; --ink-soft: #55504a; --ink-faint: #8a8378;
  --rule: #1a1817; --hair: #cfc9bc; --accent: #c73e1d; --panel: #fbf9f4;
  --serif: Charter, 'Bitstream Charter', 'Iowan Old Style', Georgia, 'Times New Roman', serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #171512; --ink: #e8e2d6; --ink-soft: #a89f90; --ink-faint: #6e675c;
          --rule: #e8e2d6; --hair: #3a362f; --accent: #e05a36; --panel: #1f1c18; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--serif); line-height: 1.5; }
main { max-width: 60rem; margin: 0 auto; padding: 1.2rem 1.1rem 4rem; }
.num, td.n, th.n, label, .kicker, .fine, select, input, button { font-family: var(--mono); }
.masthead { border-top: 4px double var(--rule); border-bottom: 1px solid var(--rule); padding: .9rem 0 .7rem; margin-bottom: 1.4rem; }
.masthead h1 { font-size: clamp(2.2rem, 8vw, 3.8rem); line-height: 1; margin: 0; letter-spacing: -.02em; font-weight: 700; }
.masthead .dek { margin: .45rem 0 0; color: var(--ink-soft); font-style: italic; max-width: 40rem; }
.kicker { font-size: .72rem; color: var(--ink-faint); margin: .5rem 0 0; }
h2 { font-size: 1.45rem; margin: 2.6rem 0 .3rem; border-bottom: 1px solid var(--rule); padding-bottom: .25rem; letter-spacing: -.01em; }
h2 + p, .lede { margin: .3rem 0 1rem; color: var(--ink-soft); max-width: 42rem; }
.controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr)); gap: 1rem 1.4rem; margin: 0 0 .6rem; }
label { display: block; font-size: .72rem; color: var(--ink-soft); margin-bottom: .25rem; }
input, select { width: 100%; font-size: .95rem; padding: .5rem .55rem; background: var(--panel); color: var(--ink);
                border: 1px solid var(--hair); border-radius: 3px; }
input:focus-visible, select:focus-visible, button:focus-visible, th button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.readout { font-size: .85rem; color: var(--ink-soft); margin: .4rem 0 0; }
.readout b { color: var(--ink); }
.fine { font-size: .72rem; color: var(--ink-faint); max-width: 44rem; margin: .6rem 0 0; line-height: 1.5; }
.legend { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; font-family: var(--mono); font-size: .72rem; color: var(--ink-soft); margin: .2rem 0 .4rem; }
.legend i { display: inline-block; width: .7rem; height: .7rem; border-radius: 50%; vertical-align: -1px; margin-right: .35rem; }
svg { width: 100%; height: auto; display: block; }
svg text { font-family: var(--mono); font-size: 11px; fill: var(--ink-faint); }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: .42rem .5rem .42rem 0; border-bottom: 1px solid var(--hair); vertical-align: baseline; }
th { font-family: var(--mono); font-size: .7rem; font-weight: 600; color: var(--ink-soft); border-bottom: 1px solid var(--rule); }
th.n, td.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; padding-right: .7rem; }
th button { all: unset; cursor: pointer; font: inherit; color: inherit; }
th button:hover { color: var(--accent); }
td.code { font-family: var(--mono); font-size: .8rem; color: var(--ink-soft); padding-right: .9rem; }
td.win { font-weight: 700; }
tr.lo td:first-child { color: var(--accent); }
.scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; margin-top: 1rem; }
@media (max-width: 40rem) { .pair { grid-template-columns: 1fr; } }
.pair h3 { margin: 0 0 .3rem; font-size: 1.05rem; }
.pair dl { margin: 0; display: grid; grid-template-columns: 1fr auto; gap: .2rem 1rem; font-size: .9rem; }
.pair dt { color: var(--ink-soft); } .pair dd { margin: 0; font-family: var(--mono); text-align: right; font-variant-numeric: tabular-nums; }
.verdict { margin: 1.1rem 0 0; font-size: 1.05rem; max-width: 42rem; }
.err { color: var(--accent); }
footer { margin-top: 3.5rem; border-top: 1px solid var(--rule); padding-top: .8rem; }
.tabs { display: flex; flex-wrap: wrap; gap: .4rem; margin: .2rem 0 .9rem; }
.tabs button { font-size: .75rem; padding: .35rem .7rem; background: transparent; color: var(--ink-soft); border: 1px solid var(--hair); border-radius: 3px; cursor: pointer; }
.tabs button[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.nav { display: flex; gap: 1.2rem; font-family: var(--mono); font-size: .78rem; margin: .7rem 0 0; }
.nav a { color: var(--ink-soft); text-decoration: none; padding-bottom: 2px; }
.nav a[aria-current="page"] { color: var(--ink); border-bottom: 2px solid var(--accent); }
.nav a:hover { color: var(--accent); }