/* One stylesheet for the whole site. No build step, no dependencies, no fonts
   fetched from anywhere — the pages must render with the network unavailable
   and must not leak a visitor's address to a third party. */

:root {
  --bg: #ffffff;
  --fg: #16191d;
  --muted: #5b6470;
  --rule: #e3e7ec;
  --accent: #0f766e;
  --card: #f7f9fa;
  --warn-bg: #fdf6e7;
  --warn-rule: #e8d9ae;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101317;
    --fg: #e6e9ed;
    --muted: #9aa4b1;
    --rule: #262c34;
    --accent: #5eead4;
    --card: #171b21;
    --warn-bg: #1f1b12;
    --warn-rule: #453a1f;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

header.site {
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2.5rem;
  padding-bottom: 1.25rem;
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  flex-wrap: wrap;
}

header.site a.brand {
  font-weight: 650;
  font-size: 1.05rem;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}

header.site nav { display: flex; gap: 1.25rem; font-size: 0.925rem; }

h1 { font-size: 1.9rem; line-height: 1.25; letter-spacing: -0.02em; margin: 0 0 0.75rem; }
h2 { font-size: 1.2rem; margin: 2.5rem 0 0.75rem; letter-spacing: -0.01em; }
h3 { font-size: 1rem; margin: 1.75rem 0 0.5rem; }

p, li { color: var(--fg); }
.lede { font-size: 1.075rem; color: var(--muted); margin-bottom: 2rem; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.925rem;
  display: block;
  overflow-x: auto;
}
th, td { text-align: left; padding: 0.55rem 0.85rem 0.55rem 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; color: var(--muted); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--card);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.note {
  background: var(--card);
  border-left: 3px solid var(--accent);
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.plain {
  background: var(--warn-bg);
  border: 1px solid var(--warn-rule);
  border-radius: 4px;
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

footer.site {
  border-top: 1px solid var(--rule);
  margin-top: 3.5rem;
  padding-top: 1.25rem;
  color: var(--muted);
  font-size: 0.875rem;
}
footer.site p { color: var(--muted); margin: 0.35rem 0; }

.updated { color: var(--muted); font-size: 0.875rem; margin-top: -0.35rem; }