:root {
  --bg: #f6f5f1; --fg: #121212; --muted: #6b6b66; --line: #dcdad3; --card: #ffffff; --accent: #d9480f; --code-bg: #eeece6;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e0e0d; --fg: #eeede8; --muted: #8f8e88; --line: #2a2a27; --card: #161614; --accent: #ff8a4c; --code-bg: #1c1c1a; color-scheme: dark; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.7 Charter, "Iowan Old Style", Georgia, serif;
  padding: max(40px, env(safe-area-inset-top)) 20px max(56px, env(safe-area-inset-bottom));
}
main { max-width: 680px; margin: 0 auto; }
a { color: var(--accent); }
.crumbs, .meta, time, .posts p, .lede, .about { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.8rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
h1 { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: clamp(1.8rem, 6vw, 2.6rem); line-height: 1.15; letter-spacing: -0.02em; margin: 28px 0 8px; }
h2, h3 { font-family: ui-monospace, "SF Mono", Menlo, monospace; line-height: 1.3; margin-top: 2em; }
h2 { font-size: 1.25rem; } h3 { font-size: 1.05rem; }
.lede { font-size: 0.95rem; margin-bottom: 32px; }
article img { max-width: 100%; }
blockquote { margin: 1.5em 0; padding: 0 1em; border-left: 3px solid var(--accent); color: var(--muted); }
code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.85em; background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }
pre { background: var(--code-bg); padding: 16px; border-radius: 8px; overflow-x: auto; }
pre code { background: none; padding: 0; }
table { border-collapse: collapse; display: block; overflow-x: auto; font-size: 0.9rem; }
th, td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5em 0; }
.posts { list-style: none; padding: 0; }
.posts li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.posts li > a { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-weight: 600; font-size: 1.05rem; color: var(--fg); text-decoration: none; }
.posts li > a:hover { color: var(--accent); }
.posts p { margin: 4px 0; font-size: 0.85rem; }
.about { display: flex; gap: 14px; align-items: flex-start; margin-top: 56px; padding: 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
.about img { border-radius: 50%; flex-shrink: 0; }
.about p { margin: 0; }

/* Figures: inline SVG charts and Mermaid diagrams */
figure { margin: 2em 0; }
figure svg { width: 100%; height: auto; display: block; }
figcaption { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.75rem; color: var(--muted); margin-top: 8px; }
.chart .bar { fill: var(--accent); }
.chart .bar.dim { fill: var(--muted); opacity: 0.45; }
.chart .track { fill: var(--line); opacity: 0.5; }
.chart text { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 14px; fill: var(--fg); }
.chart text.muted { fill: var(--muted); font-size: 12px; }
.chart .venn { fill: var(--accent); fill-opacity: 0.14; stroke: var(--accent); stroke-width: 2; }
.diagram { overflow-x: auto; }
.diagram pre.mermaid { background: none; padding: 0; text-align: center; }