:root {
  --ground: #f5f6f1;
  --surface: #ffffff;
  --ink: #16211b;
  --ink-2: #3c4a41;
  --muted: #5f6b63;
  --line: #d8ded5;
  --tag: #e3b21c;
  --tag-ink: #1d1a0b;
  --field: #2e6b3f;
  --field-soft: #e3eee4;
  --on-field: #ffffff;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Menlo, Consolas, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #0f1411;
    --surface: #161d18;
    --ink: #e6ebe5;
    --ink-2: #c2ccc4;
    --muted: #95a298;
    --line: #28322b;
    --tag: #e6be3e;
    --tag-ink: #1d1a0b;
    --field: #86c995;
    --field-soft: #1b2a1f;
    --on-field: #0f1411;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--field); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--field);
  outline-offset: 3px;
  border-radius: 3px;
}
.skip {
  position: absolute; left: -9999px; top: 8px;
  background: var(--surface); color: var(--ink); padding: 8px 12px; border-radius: 6px;
}
.skip:focus { left: 12px; }

.wrap { max-width: 1040px; margin: 0 auto; padding-inline: 20px; }

/* header */
.site-head { border-bottom: 1px solid var(--line); }
.site-bar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 10px 28px; padding-block: 16px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--ink); text-decoration: none; font-weight: 750; font-size: 18px; letter-spacing: -0.01em;
}
.brand svg { width: 26px; height: 26px; flex: none; }
.brand .post { fill: var(--ink); }
.brand .sign { fill: var(--tag); }
.brand .ink { fill: var(--tag-ink); }
.site-nav { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: 15px; }
.site-nav a { color: var(--ink-2); text-decoration: none; }
.site-nav a:hover { color: var(--ink); text-decoration: underline; }
.site-nav a[aria-current="page"] { color: var(--ink); font-weight: 650; }

/* type */
.eyebrow {
  margin: 0; font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--field);
}
h1 {
  margin: 10px 0 18px; font-size: clamp(34px, 5.4vw, 54px); line-height: 1.05;
  letter-spacing: -0.03em; text-wrap: balance;
}
h2 { margin: 0 0 14px; font-size: 24px; line-height: 1.25; letter-spacing: -0.015em; text-wrap: balance; }
h3 { margin: 0; font-size: 18px; line-height: 1.3; }
.lead { margin: 0; font-size: 19px; color: var(--ink-2); max-width: 62ch; }
p { margin: 0 0 14px; }

/* sections */
.hero { padding-block: 64px 36px; max-width: 800px; }
.band { padding-block: 44px; border-top: 1px solid var(--line); }
.band > .intro { max-width: 64ch; color: var(--ink-2); margin-bottom: 22px; }

/* the test plot row */
.field {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 22px;
  border-bottom: 3px solid var(--line); padding-bottom: 0; margin-top: 8px;
}
.stake { display: flex; flex-direction: column; }
.stake .sign {
  background: var(--tag); color: var(--tag-ink); border-radius: 6px; padding: 14px 16px 16px;
  display: flex; flex-direction: column; gap: 4px; flex: 1;
}
.stake .no { font-family: var(--mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; }
.stake .sign h3 { font-size: 24px; letter-spacing: -0.015em; }
.stake .sign p { margin: 0; font-size: 15px; }
.stake .sign a { color: var(--tag-ink); font-weight: 650; }
.stake .status {
  align-self: flex-start; margin-top: 6px; font-family: var(--mono); font-size: 11.5px;
  letter-spacing: 0.06em; text-transform: uppercase; border: 1px solid currentColor;
  border-radius: 999px; padding: 1px 8px;
}
.stake .post { width: 8px; height: 30px; margin-left: 26px; background: var(--ink-2); }
.stake.trial .sign { background: transparent; border: 2px dashed var(--line); color: var(--muted); }
.stake.trial .post { background: var(--line); }

/* small grids */
.grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px;
}
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px;
}
.card h3 { margin-bottom: 6px; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.card .step { font-family: var(--mono); font-size: 12px; color: var(--field); letter-spacing: 0.1em; }

ul.plain { margin: 0; padding-left: 20px; color: var(--ink-2); max-width: 70ch; }
ul.plain li { margin: 6px 0; }

dl.facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1px; margin: 0;
  background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
}
dl.facts div { background: var(--surface); padding: 14px 16px; }
dl.facts dt {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
}
dl.facts dd { margin: 4px 0 0; }

.after { margin-top: 18px; }

.button {
  display: inline-block; background: var(--field); color: var(--on-field); text-decoration: none;
  font-weight: 650; padding: 10px 16px; border-radius: 7px;
}

/* documents */
.doc { max-width: 72ch; padding-block: 48px 64px; }
.doc h1 { font-size: clamp(30px, 4.2vw, 42px); }
.doc h2 { margin-top: 36px; font-size: 21px; }
.doc h3 { margin-top: 22px; margin-bottom: 6px; font-size: 17px; }
.doc p, .doc li { color: var(--ink-2); }
.doc ul { padding-left: 20px; }
.doc li { margin: 6px 0; }
.updated { font-family: var(--mono); font-size: 13px; color: var(--muted); margin-bottom: 22px; }
.toc {
  background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 18px; margin: 18px 0 8px;
}
.toc ol { margin: 6px 0 0; padding-left: 20px; columns: 2 220px; column-gap: 28px; }
.toc li { margin: 3px 0; break-inside: avoid; }
.note {
  background: var(--field-soft); border-radius: 8px; padding: 12px 14px; color: var(--ink); font-size: 15px;
}

/* footer */
.site-foot { border-top: 1px solid var(--line); margin-top: 24px; }
.foot-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px 32px;
  padding-block: 28px 40px; font-size: 14px; color: var(--muted);
}
.foot-grid p { margin: 0 0 4px; }
.foot-grid b { color: var(--ink); }
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 18px; align-content: flex-start; }
.foot-links a { color: var(--ink-2); }

@media (max-width: 560px) {
  .hero { padding-block: 44px 28px; }
  .lead { font-size: 17.5px; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}