:root {
  --bg: #fbfaf7;
  --text: #24272e;
  --muted: #6b7079;
  --line: #e6e2da;
  --accent: #2f6f62;
  --code-bg: #f1eee8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17191d;
    --text: #e3e1dc;
    --muted: #9a9ea6;
    --line: #2c3036;
    --accent: #7fbfae;
    --code-bg: #22252b;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.8 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
}
.wrap { max-width: 44rem; margin: 0 auto; padding: 0 1rem; }
header.site { padding: 2.5rem 0 1.5rem; border-bottom: 1px solid var(--line); }
header.site .wrap { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1.5rem; }
.brand { font-size: 1.25rem; font-weight: 650; color: var(--text); text-decoration: none; letter-spacing: .02em; }
nav a { color: var(--muted); text-decoration: none; margin-left: 1.1rem; font-size: .95rem; }
nav a:first-child { margin-left: 0; }
nav a:hover, nav a[aria-current] { color: var(--accent); }
main { padding: 2rem 0 3rem; }
a { color: var(--accent); }
h1 { font-size: 1.7rem; line-height: 1.4; margin: 0 0 .4rem; }
h2 { font-size: 1.25rem; margin: 2.2rem 0 .6rem; }
h3 { font-size: 1.05rem; margin: 1.6rem 0 .4rem; }
p, ul, ol { margin: 0 0 1rem; }
li { margin: .2rem 0; }
.meta { color: var(--muted); font-size: .9rem; margin-bottom: 1.8rem; }
.intro { color: var(--muted); margin-bottom: 2.2rem; }
.posts { list-style: none; padding: 0; margin: 0; }
.posts li { padding: 1.1rem 0; border-top: 1px solid var(--line); margin: 0; }
.posts li:first-child { border-top: 0; padding-top: 0; }
.posts a { font-size: 1.1rem; font-weight: 600; color: var(--text); text-decoration: none; }
.posts a:hover { color: var(--accent); }
.posts time { display: block; color: var(--muted); font-size: .85rem; }
.posts p { color: var(--muted); margin: .3rem 0 0; font-size: .95rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .88em;
       background: var(--code-bg); padding: .1em .35em; border-radius: 4px; }
pre { background: var(--code-bg); padding: .9rem 1rem; border-radius: 6px; overflow-x: auto;
      line-height: 1.55; margin: 0 0 1.2rem; }
pre code { background: none; padding: 0; font-size: .85rem; }
blockquote { margin: 0 0 1rem; padding: .2rem 1rem; border-left: 3px solid var(--line); color: var(--muted); }
footer.site { border-top: 1px solid var(--line); padding: 1.5rem 0 2.5rem; color: var(--muted); font-size: .85rem; }
footer.site a { color: var(--muted); }
.back { display: inline-block; margin-top: 2rem; font-size: .95rem; }