:root {
  --bg: #fff; --fg: #1f2328; --muted: #59636e; --line: #d8dee4;
  --accent: #0969da; --mark: #fff8c5; --card: #f6f8fa;
  --mono: ui-monospace, "Cascadia Code", Consolas, "Courier New", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --fg: #e6edf3; --muted: #9198a1; --line: #3d444d;
    --accent: #4493f8; --mark: #5b4a12; --card: #161b22;
  }
}
* { box-sizing: border-box; }
html { color-scheme: light dark; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: 46rem; margin: 0 auto; padding: 1.5rem 1rem 4rem; }
img { max-width: 100%; height: auto; }

.site-head { border-bottom: 1px solid var(--line); }
.site-nav { max-width: 46rem; margin: 0 auto; padding: .75rem 1rem; display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.site-nav .brand { font-weight: 700; color: var(--fg); margin-right: auto; }
.search-form input { padding: .3rem .6rem; border: 1px solid var(--line); border-radius: .4rem; background: var(--bg); color: var(--fg); }
.site-foot { border-top: 1px solid var(--line); color: var(--muted); text-align: center; font-size: .875rem; padding: 1.5rem 1rem; }

.post-list { list-style: none; margin: 0; padding: 0; }
.post-item { padding: 1.25rem 0; border-bottom: 1px solid var(--line); }
.post-item h2 { font-size: 1.25rem; margin: 0 0 .25rem; }
.post-item .meta, .post > .meta { color: var(--muted); font-size: .875rem; margin: 0 0 .5rem; }
.post-item .tag { margin-left: .5rem; font-size: .8125rem; }
.post-item.micro { background: var(--card); border-radius: .6rem; padding: 1rem; margin: .75rem 0; border: none; }
.post-item.micro h2 { font-size: 1rem; }
.micro-body { white-space: pre-wrap; }
.summary { color: var(--muted); margin: .25rem 0 0; }
.cover { border-radius: .5rem; margin: .5rem 0; }
.pager { display: flex; justify-content: space-between; margin-top: 2rem; }
.empty { color: var(--muted); }

.post h1 { font-size: 1.75rem; line-height: 1.4; margin: .5rem 0; }
.toc { background: var(--card); border-radius: .6rem; padding: .75rem 1rem; margin: 1rem 0; font-size: .9rem; }
.toc-title { margin: 0 0 .25rem; font-weight: 700; }
.toc ul { margin: 0; padding-left: 1rem; }
.toc-l3 { margin-left: 1rem; }
.post-content { margin-top: 1.5rem; overflow-wrap: break-word; }
.post-content pre { background: var(--card); border: 1px solid var(--line); border-radius: .5rem; padding: .75rem 1rem; overflow-x: auto; }
.post-content code { font-family: var(--mono); font-size: .9em; background: var(--card); padding: .1em .3em; border-radius: .25rem; }
.post-content pre code { background: none; padding: 0; }
.post-content blockquote { margin: 1rem 0; padding-left: 1rem; border-left: 3px solid var(--line); color: var(--muted); }
.post-content table { border-collapse: collapse; }
.post-content th, .post-content td { border: 1px solid var(--line); padding: .3rem .6rem; }
.prev-next { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: .9rem; }

.static-page h1 { margin-top: 2rem; }
.archive-group h2 { font-size: 1rem; color: var(--muted); margin: 1.5rem 0 .5rem; }
.archive-list { list-style: none; padding: 0; margin: 0; }
.archive-list li { display: flex; gap: .75rem; padding: .25rem 0; }
.archive-list time { color: var(--muted); font-variant-numeric: tabular-nums; }
.search-meta { color: var(--muted); font-size: .9rem; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1rem 0; }
mark { background: var(--mark); color: inherit; padding: 0 .1em; border-radius: .2em; }