:root {
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --bg: #fff;
  --text: #1a1a1a;
  --muted: #6b6b6b;
  --border: #e6e6e6;
  --code-bg: #f6f6f4;
  --link: #1a1a1a;
  --accent: #2b6cb0;
  --c-comment: #8a8a8a;
  --c-keyword: #b5306b;
  --c-string: #2f7a3d;
  --c-number: #b35c00;
  --c-name: #2b6cb0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111;
    --text: #e8e8e6;
    --muted: #9a9a9a;
    --border: #2a2a2a;
    --code-bg: #1b1b1b;
    --link: #e8e8e6;
    --accent: #7fb2e5;
    --c-comment: #7a7a7a;
    --c-keyword: #f08db4;
    --c-string: #8fcf8f;
    --c-number: #f0b070;
    --c-name: #7fb2e5;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0 auto;
  max-width: 680px;
  padding: 0 20px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--link); text-decoration: underline; text-decoration-color: var(--border); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-color: currentColor; }
.post a { text-decoration-color: var(--muted); }

/* Header / footer */

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding: 40px 0 20px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--border);
}
.site-name { font-weight: 600; text-decoration: none; }
.site-header nav { display: flex; gap: 20px; }
.site-header nav a,
.site-footer a { color: var(--muted); text-decoration: none; }
.site-header nav a:hover,
.site-footer a:hover { color: var(--text); }

.site-footer {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 96px;
  padding: 20px 0 48px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}
.site-footer span { display: flex; gap: 16px; }

/* Home */

.intro { color: var(--muted); margin: 0 0 32px; }

.post-list { list-style: none; margin: 0; padding: 0; border-bottom: 1px solid var(--border); }
.post-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding: 14px 0;
  border-top: 1px solid var(--border);
}
.post-list a { text-decoration: none; font-weight: 500; }
.post-list a:hover { text-decoration: underline; text-decoration-color: var(--muted); }
.post-list time { flex-shrink: 0; color: var(--muted); font-size: 15px; font-variant-numeric: tabular-nums; }

@media (max-width: 520px) {
  .post-list li { flex-direction: column; gap: 0; }
}

/* Article */

.post header { margin-bottom: 40px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.post h1 { font-size: 30px; line-height: 1.25; letter-spacing: -0.02em; margin: 0 0 8px; }
.post .meta { color: var(--muted); font-size: 15px; margin: 0; }

.post h2, .post h3, .post h4 { line-height: 1.3; letter-spacing: -0.01em; margin: 2.2em 0 0.6em; }
/* Posts use "#" headings in the body; keep them below the page title. */
.post > h1:not(:first-child) { font-size: 24px; margin: 2.2em 0 0.6em; }
.post > header + :nth-child(2) { margin-top: 0; }
.post h2 { font-size: 21px; }
.post h3 { font-size: 18px; }
.post h4 { font-size: 17px; }

.post p, .post ul, .post ol, .post blockquote, .post table, .post pre { margin: 0 0 1.3em; }
.post ul, .post ol { padding-left: 1.4em; }
.post li { margin: 0.25em 0; }
.post img { max-width: 100%; height: auto; display: block; margin: 2em auto; }
.post hr { border: 0; border-top: 1px solid var(--border); margin: 3em 0; }

.post blockquote {
  margin-left: 0;
  padding: 2px 0 2px 18px;
  border-left: 2px solid var(--border);
  color: var(--muted);
}
.post blockquote p:last-child { margin-bottom: 0; }

/* Chirpy-style callouts: > text {: .prompt-info } */
.post blockquote[class^="prompt-"] { color: var(--text); border-left-color: var(--accent); }
.post blockquote.prompt-warning { border-left-color: #d69e2e; }
.post blockquote.prompt-danger { border-left-color: #e53e3e; }

.post table { border-collapse: collapse; width: 100%; font-size: 15px; display: block; overflow-x: auto; }
.post th, .post td { text-align: left; padding: 8px 12px 8px 0; border-bottom: 1px solid var(--border); }

.footnotes { font-size: 15px; color: var(--muted); margin-top: 3em; }

.back { margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--border); }
.back a { color: var(--muted); text-decoration: none; }
.back a:hover { color: var(--text); }

/* Code */

code, pre { font-family: var(--mono); font-size: 0.85em; }
:not(pre) > code { background: var(--code-bg); padding: 0.15em 0.35em; border-radius: 4px; }
pre {
  background: var(--code-bg);
  padding: 16px 18px;
  border-radius: 6px;
  overflow-x: auto;
  line-height: 1.55;
}
pre code { font-size: 1em; }
div.highlighter-rouge, figure.highlight { margin: 0 0 1.3em; }
div.highlighter-rouge pre { margin: 0; }

.mermaid { margin: 2em 0; text-align: center; }

.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs, .highlight .cp, .highlight .ch { color: var(--c-comment); font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kr, .highlight .kt, .highlight .kc, .highlight .ow { color: var(--c-keyword); }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sh, .highlight .si, .highlight .se, .highlight .sc, .highlight .dl { color: var(--c-string); }
.highlight .m, .highlight .mi, .highlight .mf, .highlight .mh, .highlight .mo, .highlight .il { color: var(--c-number); }
.highlight .nf, .highlight .nb, .highlight .fm, .highlight .nc, .highlight .nt, .highlight .na, .highlight .nv { color: var(--c-name); }
.highlight .gd { color: #e53e3e; }
.highlight .gi { color: var(--c-string); }