/* TwoPointZero.io — v0 identity: quiet, editorial, governance-grade.
   Zero external requests: system fonts only, no JavaScript. */

:root {
  color-scheme: light dark;
  --paper: #fbfaf7;
  --ink: #1d2025;
  --muted: #59616c;
  --accent: #24557e;
  --rule: #e4e0d6;
  --card: #ffffff;
  --serif: "Charter", "Bitstream Charter", Georgia, Cambria, "Times New Roman", serif;
  --sans: system-ui, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #16181c;
    --ink: #e8e6e1;
    --muted: #a3a9b3;
    --accent: #85b4dc;
    --rule: #2c3038;
    --card: #1d2026;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
}

.shell {
  max-width: 44rem;
  margin-inline: auto;
  padding-inline: 1.25rem;
}

/* ---------- header ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  background: var(--accent);
  color: var(--paper);
  padding: 0.5em 1em;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; z-index: 10; }

.site-header {
  border-bottom: 1px solid var(--rule);
  padding-block: 1.1rem;
}
.site-header .shell {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}

.wordmark {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark span { color: var(--accent); }

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  font-size: 0.95rem;
}
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  padding-block: 0.15em;
  border-bottom: 2px solid transparent;
}
.site-header nav a:hover { color: var(--ink); }
.site-header nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ---------- type ---------- */

h1, h2, h3 {
  font-family: var(--serif);
  line-height: 1.18;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(1.85rem, 4.5vw, 2.5rem); margin: 0 0 0.6em; }
h2 { font-size: 1.45rem; margin: 2.2em 0 0.5em; }
h3 { font-size: 1.15rem; margin: 1.6em 0 0.4em; }

main { padding-block: 2.75rem 4rem; }

a { color: var(--accent); text-underline-offset: 0.15em; }

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1.2em;
}

.lede { font-size: 1.15rem; color: var(--muted); }

ul { padding-left: 1.2em; }
li { margin-block: 0.35em; }

/* ---------- components ---------- */

.button {
  display: inline-block;
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 0.55em 1.1em;
  margin: 0.5em 0.75em 0 0;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}
.button:hover { background: var(--accent); color: var(--paper); }

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1rem;
  padding: 0;
  margin: 1.5rem 0;
  list-style: none;
}
.cards li {
  margin: 0;
  padding: 1.1rem 1.2rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 6px;
}
.cards h3 { margin: 0 0 0.4em; font-size: 1.05rem; }
.cards p { margin: 0; font-size: 0.95rem; color: var(--muted); }

dl.facts { margin: 1.5rem 0; }
dl.facts dt {
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 1.1em;
}
dl.facts dd { margin: 0.25em 0 0; }

hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding-block: 1.75rem 2.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.site-footer a { color: var(--muted); }
.site-footer nav { margin-block: 0.75em; }