:root {
  --fg: #1f2328;
  --muted: #59636e;
  --bg: #ffffff;
  --panel: #f6f8fa;
  --line: #d1d9e0;
  --accent: #0969da;
  --good: #1a7f37;
  --warn: #9a6700;
  --bad: #cf222e;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6edf3;
    --muted: #9198a1;
    --bg: #0d1117;
    --panel: #151b23;
    --line: #3d444d;
    --accent: #4493f8;
    --good: #3fb950;
    --warn: #d29922;
    --bad: #f85149;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.5rem;
  padding: 0.8rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.brand { font-weight: 700; font-size: 1.15rem; color: var(--fg); text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; }
nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }

main { max-width: 60rem; margin: 0 auto; padding: 1.5rem 1.5rem 3rem; }

h1 { font-size: 2rem; line-height: 1.25; margin: 0.5rem 0 1rem; }
h2 { margin-top: 2.5rem; padding-bottom: 0.3rem; border-bottom: 1px solid var(--line); }
h3 { margin-top: 1.8rem; }

a { color: var(--accent); }

code, pre { font: 0.88em/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { background: var(--panel); padding: 0.1em 0.35em; border-radius: 4px; }
pre { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 0.9rem 1rem; overflow-x: auto; }
pre code { background: none; padding: 0; }

table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: 0.92rem; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--line); padding: 0.4rem 0.65rem; text-align: left; vertical-align: top; }
th { background: var(--panel); }
td:not(:first-child) { white-space: normal; }

blockquote { margin: 1rem 0; padding: 0.6rem 1rem; border-left: 4px solid var(--accent); background: var(--panel); }
blockquote p { margin: 0.3rem 0; }

img, svg { max-width: 100%; height: auto; }
figure { margin: 1.5rem 0; }
figcaption { color: var(--muted); font-size: 0.9rem; }

.good { color: var(--good); font-weight: 600; }
.warn { color: var(--warn); font-weight: 600; }
.bad  { color: var(--bad);  font-weight: 600; }

footer { max-width: 60rem; margin: 0 auto; padding: 1.5rem; color: var(--muted); font-size: 0.9rem; border-top: 1px solid var(--line); }