:root {
  --bg: #fdfdfb;
  --fg: #2b2b28;
  --muted: #767470;
  --accent: #0f6d5f;
  --border: #e6e4de;
  --code-bg: #f4f3ef;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181a;
    --fg: #d8d6d0;
    --muted: #8f8d86;
    --accent: #4fb3a1;
    --border: #2c2e31;
    --code-bg: #1f2124;
    --card: #1d1f21;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.85 -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 页头 / 页脚 */
.site-header { border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 18px; padding-bottom: 18px; }
.brand { font-weight: 700; font-size: 19px; color: var(--fg); }
.nav a { margin-left: 18px; color: var(--muted); font-size: 15px; }
.nav a:hover { color: var(--accent); }
.site-footer { border-top: 1px solid var(--border); margin-top: 64px; padding: 24px 0 40px; color: var(--muted); font-size: 13.5px; }

/* 首页 */
.intro { margin: 44px 0 8px; }
.intro h1 { font-size: 26px; margin: 0 0 6px; }
.intro p { color: var(--muted); margin: 0; }
.post-list { list-style: none; margin: 28px 0 0; padding: 0; }
.post-item { padding: 18px 0; border-bottom: 1px solid var(--border); }
.post-link { font-size: 17.5px; font-weight: 600; color: var(--fg); }
.post-link:hover { color: var(--accent); }
.post-date { display: block; color: var(--muted); font-size: 13px; margin-top: 2px; }
.post-desc { margin: 6px 0 0; color: var(--muted); font-size: 14.5px; }

/* 文章页 */
.page, article.post { margin-top: 44px; }
.draft-badge {
  display: inline-block; background: #b45309; color: #fff;
  font-size: 13px; padding: 2px 10px; border-radius: 3px;
}
.post-title { font-size: 26px; line-height: 1.4; margin: 6px 0 8px; }
.post-meta { color: var(--muted); font-size: 13.5px; margin-bottom: 28px; }
.tag {
  display: inline-block; background: var(--code-bg); border: 1px solid var(--border);
  border-radius: 3px; padding: 0 8px; font-size: 12.5px; margin-left: 6px; color: var(--muted);
}
.back { margin-top: 48px; font-size: 14px; }

/* 评论区 */
.comments { margin-top: 56px; border-top: 1px solid var(--border); padding-top: 8px; }
.comments h2 { font-size: 18px; color: var(--muted); }
.comments-hint { color: var(--muted); font-size: 13px; margin-top: 4px; }

/* 正文排版 */
.post-body h2 { font-size: 21px; margin: 40px 0 12px; }
.post-body h3 { font-size: 18px; margin: 30px 0 10px; }
.post-body p { margin: 12px 0; }
.post-body ul, .post-body ol { padding-left: 24px; margin: 12px 0; }
.post-body li { margin: 6px 0; }
.post-body blockquote {
  margin: 16px 0; padding: 10px 16px; border-left: 3px solid var(--accent);
  background: var(--code-bg); color: var(--muted); border-radius: 0 4px 4px 0;
}
.post-body code {
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 3px;
  padding: 1px 5px; font-size: 0.88em;
  font-family: Consolas, "JetBrains Mono", Menlo, monospace;
}
.post-body pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 6px; overflow-x: auto; }
.post-body pre code { background: none; border: none; padding: 14px 16px; display: block; line-height: 1.6; }
.post-body table { border-collapse: collapse; margin: 16px 0; width: 100%; font-size: 14.5px; }
.post-body th, .post-body td { border: 1px solid var(--border); padding: 7px 12px; text-align: left; }
.post-body th { background: var(--code-bg); }
.post-body img { max-width: 100%; border-radius: 6px; }
.post-body hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }
.post-body h2[id], .post-body h3[id] { scroll-margin-top: 20px; }

/* 代码高亮 */
.tok-com { color: #7b8794; font-style: italic; }
.tok-str { color: #a16207; }
.tok-num { color: #0e7490; }
.tok-kw  { color: #7c3aed; font-weight: 600; }
.tok-type{ color: #0f766e; }
.tok-pre { color: #be185d; }
.tok-fn  { color: #1d4ed8; }
.tok-prop{ color: #0f766e; }
@media (prefers-color-scheme: dark) {
  .tok-com { color: #7d8590; }
  .tok-str { color: #e0a562; }
  .tok-num { color: #6cc7d9; }
  .tok-kw  { color: #c3a6ff; }
  .tok-type{ color: #4fb3a1; }
  .tok-pre { color: #f472b6; }
  .tok-fn  { color: #79a8ff; }
  .tok-prop{ color: #4fb3a1; }
}

/* 上一篇 / 下一篇 */
.pn { display: flex; justify-content: space-between; gap: 14px; margin-top: 44px; }
.pn-item {
  flex: 1; display: flex; flex-direction: column; gap: 3px;
  border: 1px solid var(--border); border-radius: 6px;
  background: var(--card); padding: 10px 14px; min-width: 0;
}
a.pn-item:hover { text-decoration: none; border-color: var(--accent); }
a.pn-item:hover .pn-title { color: var(--accent); }
.pn-label { color: var(--muted); font-size: 12.5px; }
.pn-title { color: var(--fg); font-size: 14px; font-weight: 600; }
.pn-next { text-align: right; }

/* 目录侧栏（宽屏文章页显示） */
.toc { display: none; }
@media (min-width: 1280px) {
  .toc {
    display: block; position: fixed; top: 96px;
    left: calc(50% + 398px); width: 230px; max-height: 72vh; overflow-y: auto;
    font-size: 13px; line-height: 1.6;
  }
  .toc-title { color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: 3px; margin-bottom: 6px; }
  .toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--border); }
  .toc a { display: block; padding: 3px 0 3px 12px; color: var(--muted); border-left: 2px solid transparent; margin-left: -1px; }
  .toc a:hover { color: var(--accent); text-decoration: none; border-left-color: var(--accent); }
  .toc .toc-l3 { padding-left: 16px; }
}