:root {
  color-scheme: light;
  --ink: #22252a;
  --muted: #636972;
  --link: #285a83;
  --rule: #e3e5e8;
  --surface: #f6f7f8;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background: #fff;
  -webkit-text-size-adjust: 100%;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { text-decoration: underline; }
a:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--link); outline-offset: 5px; border-radius: 2px; }
.site-header, .site-footer { width: min(960px, calc(100% - 64px)); margin-inline: auto; }
.site-header { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-name { font-size: 20px; font-weight: 650; letter-spacing: -.4px; color: var(--ink); text-decoration: none; }
.site-header nav { display: flex; gap: 30px; font-size: 15px; }
.site-header nav a { color: var(--muted); text-decoration: none; padding-block: 8px; }
.site-header nav a[aria-current] { color: var(--ink); text-decoration: underline; }
main { width: min(720px, calc(100% - 48px)); margin: 0 auto; padding-block: 54px 96px; flex: 1; }
main:focus { outline: none; }
h1, h2, h3, h4 { line-height: 1.35; font-weight: 650; letter-spacing: -.025em; }
h1 { font-size: 36px; margin: 0 0 18px; overflow-wrap: anywhere; }
h2 { font-size: 24px; }
h3 { font-size: 20px; }
p { margin: 0 0 1.2em; }
.intro { margin-bottom: 68px; }
.intro h1 span { display: inline-block; font-size: 22px; font-weight: 400; color: var(--muted); margin-left: 10px; letter-spacing: .03em; }
.intro p { font-size: 19px; color: var(--muted); margin-bottom: 18px; }
.intro-links { display: flex; gap: 24px; font-size: 15px; }
.intro-links a { display: inline-flex; align-items: center; gap: 7px; min-height: 44px; text-decoration: none; }
.link-icon { width: 16px; height: 16px; flex: none; stroke-width: 1.6; }
.intro-links a:hover span, .site-footer a:hover span { text-decoration: underline; text-underline-offset: .2em; }
.home-section + .home-section { margin-top: 48px; }
.section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--rule); padding-bottom: 14px; }
.section-heading h2 { margin: 0; font-size: 23px; }
.section-heading > a { font-size: 14px; text-decoration: none; white-space: nowrap; }
.empty-state { color: var(--muted); font-size: 16px; margin: 22px 0 0; }
.page-heading { margin-bottom: 40px; }
.page-heading p { color: var(--muted); }
.entry-list { padding: 0; margin: 0; list-style: none; }
.entry { padding: 26px 0; border-bottom: 1px solid var(--rule); }
.entry-list li:last-child .entry { border-bottom: 0; }
.entry h2, .entry h3 { margin: 0 0 10px; font-size: 20px; overflow-wrap: anywhere; }
.entry h2 a, .entry h3 a { color: var(--ink); text-decoration: none; }
.entry h2 a:hover, .entry h3 a:hover { color: var(--link); text-decoration: underline; }
.entry p { font-size: 16px; color: var(--muted); margin-bottom: 9px; }
.entry time, .article-meta, .updated { color: var(--muted); font-size: 13px; }
.site-footer { padding-block: 24px 30px; border-top: 1px solid var(--rule); display: flex; justify-content: space-between; gap: 16px; color: var(--muted); font-size: 13px; }
.site-footer div { display: flex; gap: 22px; }
.site-footer a { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); text-decoration: none; }
.site-footer .link-icon { width: 14px; height: 14px; }
.skip-link { position: fixed; top: -100px; left: 16px; background: white; padding: 10px 20px; z-index: 5; }
.skip-link:focus { top: 12px; }
.article-heading { margin-bottom: 30px; }
.back-link { display: inline-block; font-size: 14px; margin-bottom: 22px; text-decoration: none; }
.article-summary { color: var(--muted); font-size: 18px; }
.article-meta { display: flex; flex-wrap: wrap; column-gap: 18px; row-gap: 4px; }
.updated { margin-top: 8px; }
.project-links { padding: 0; list-style: none; display: flex; gap: 24px; flex-wrap: wrap; font-size: 15px; }
.toc { background: var(--surface); border-radius: 3px; padding: 16px 22px; margin: 32px 0 42px; font-size: 14px; }
.toc summary { font-weight: 600; cursor: pointer; }
.toc ul { list-style: none; padding: 0; margin: 12px 0 0; }
.toc li { margin-top: 5px; }
.toc .toc-h3 { padding-left: 18px; }
.toc a { color: var(--muted); text-decoration: none; }
.prose { overflow-wrap: break-word; }
.prose h2 { margin-top: 2.2em; margin-bottom: .8em; scroll-margin-top: 24px; }
.prose h3 { margin-top: 1.7em; scroll-margin-top: 24px; }
.prose li { margin-block: .35em; }
.prose figure { margin: 32px 0; }
.prose img, .prose video { max-width: 100%; height: auto; display: block; margin-inline: auto; }
.prose figcaption { font-size: 14px; line-height: 1.6; margin-top: 12px; color: var(--muted); }
.prose blockquote { margin-inline: 0; border-left: 3px solid #b4bec8; padding-left: 22px; color: var(--muted); }
.prose code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; font-size: .86em; background: var(--surface); padding: .15em .3em; border-radius: 3px; }
.prose pre { padding: 20px; background: var(--surface); border: 1px solid var(--rule); border-radius: 3px; overflow-x: auto; line-height: 1.65; font-size: 14px; }
.prose pre code { padding: 0; font-size: inherit; background: none; }
.table-scroll { overflow-x: auto; margin-block: 28px; }
table { border-collapse: collapse; min-width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--rule); }
th { background: var(--surface); font-weight: 600; }
.prose .katex-display { overflow-x: auto; overflow-y: hidden; padding-block: 8px; margin-block: 24px; }
.footnotes { font-size: 14px; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin-block: 32px; }
.contact-list { display: grid; grid-template-columns: 80px 1fr; gap: 10px 16px; }
.contact-list dd { margin: 0; }
.article-end { border-top: 1px solid var(--rule); margin-top: 56px; padding-top: 20px; font-size: 15px; }
.draft-label, .preview-notice { color: #744c08; font-size: 13px; }
.preview-notice { background: #fff7e6; padding: 10px 16px; margin-bottom: 30px; }
.hljs-keyword, .hljs-selector-tag, .hljs-literal { color: #7d3392; }
.hljs-string, .hljs-attr { color: #256547; }
.hljs-number, .hljs-title { color: #285a83; }
.hljs-comment { color: #65717d; }
@media (max-width: 600px) {
  .site-header, .site-footer { width: calc(100% - 40px); }
  .site-header { min-height: 82px; gap: 14px; }
  .site-name { font-size: 18px; }
  .site-header nav { gap: 17px; font-size: 14px; }
  main { width: calc(100% - 40px); padding-block: 34px 64px; }
  h1 { font-size: 30px; }
  .intro { margin-bottom: 48px; }
  .intro h1 span { font-size: 20px; margin-left: 6px; }
  .intro p { font-size: 17px; }
  .section-heading h2 { font-size: 21px; }
  .section-heading > a { font-size: 13px; }
  .prose pre { padding: 14px; }
}
@media (max-width: 360px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 6px; padding-block: 18px; }
  .intro h1 span { display: block; margin: 8px 0 0; }
}
@media print {
  .site-header, .site-footer, .skip-link, .toc, .article-end, .back-link { display: none; }
  main { width: 100%; padding: 0; }
  .prose pre, .table-scroll, .prose .katex-display { white-space: pre-wrap; overflow: visible; }
  a { color: inherit; }
  h2, h3 { break-after: avoid; }
  figure, pre { break-inside: avoid; }
}