:root {
  --bg: #fbfaf7; --fg: #1f2328; --muted: #6b7280;
  --line: #e3e0d8; --accent: #2f6f4e; --card: #ffffff; --code: #f2f0ea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --fg: #e6e3dc; --muted: #9aa0a6;
    --line: #2a2e35; --accent: #6fbf95; --card: #1a1d22; --code: #1f232a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.78 "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
        system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 46rem; margin: 0 auto; padding: 3.5rem 1.25rem 4rem; }
.topbar { font-size: .85rem; color: var(--muted); margin-bottom: 2.5rem; }
.topbar a { color: var(--muted); border: 0; }
h1 { font-size: 1.6rem; margin: 0 0 .35rem; letter-spacing: .01em; }
h2 { font-size: 1.08rem; margin: 2.75rem 0 1rem; padding-bottom: .4rem; border-bottom: 1px solid var(--line); }
h3 { font-size: 1rem; margin: 2rem 0 .6rem; }
.sub { color: var(--muted); margin: 0 0 2.5rem; font-size: .95rem; }
p { margin: 0 0 1rem; }
a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { border-bottom-color: currentColor; }
ul, ol { padding-left: 1.4rem; margin: 0 0 1.1rem; }
li { margin-bottom: .35rem; }
strong { font-weight: 600; }
code {
  background: var(--code); border-radius: 4px; padding: .1rem .35rem;
  font: .87em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
pre {
  background: var(--code); border: 1px solid var(--line); border-radius: 8px;
  padding: .9rem 1rem; overflow-x: auto; line-height: 1.6;
  font: .82rem/1.6 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
pre code { background: transparent; padding: 0; font-size: inherit; }
table { width: 100%; border-collapse: collapse; margin: 0 0 1.2rem; font-size: .9rem; }
.tw { overflow-x: auto; margin: 0 0 1.2rem; }
.tw table { margin-bottom: 0; }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 1.15rem 1.25rem; margin-bottom: 1rem;
}
.card h3 { margin: 0 0 .45rem; }
.card p { margin: 0 0 .6rem; font-size: .93rem; color: var(--muted); }
.tags { font-size: .8rem; color: var(--muted); }
.tags code { background: transparent; border: 1px solid var(--line); padding: .05rem .4rem; margin-right: .3rem; font-size: .78rem; }
ul.notes { list-style: none; padding: 0; margin: 0; }
ul.notes li { padding: .8rem 0; border-bottom: 1px dashed var(--line); }
ul.notes li:last-child { border-bottom: 0; }
ul.notes .date { color: var(--muted); font-size: .82rem; margin-right: .6rem; }
ul.notes .desc { display: block; color: var(--muted); font-size: .88rem; margin-top: .2rem; }
blockquote {
  margin: 0 0 1.2rem; padding: .1rem 0 .1rem 1rem;
  border-left: 3px solid var(--line); color: var(--muted);
}
footer {
  margin-top: 3.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line);
  font-size: .82rem; color: var(--muted);
}
footer a { color: inherit; }