/* blog 静态页的样式（blog-theme，site-frontend D15）：与 home 同一套字体和配色，
   正文宋体、约 36 字宽，跟随系统明暗；不加载任何外部资源。 */
:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #22201d;
  --muted: #7a756e;
  --line: #e6e2dc;
  --accent: #3d5a99;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121316;
    --fg: #e9e7e3;
    --muted: #9b968f;
    --line: #2b2c31;
    --accent: #9db2ea;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.7 var(--sans);
  -webkit-text-size-adjust: 100%;
}
main {
  max-width: 40em;
  margin: 0 auto;
  padding: 32px max(16px, env(safe-area-inset-right)) 64px max(16px, env(safe-area-inset-left));
}
a { color: var(--accent); }

.site { border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 8px; }
.site a { color: var(--fg); text-decoration: none; font-weight: 700; font-size: 18px; letter-spacing: 0.02em; }
.year h2 { font-size: 13px; font-weight: 400; color: var(--muted); letter-spacing: 0.1em; margin: 24px 0 6px; }
.list { list-style: none; margin: 0; padding: 0; }
.list li { display: grid; grid-template-columns: 4em minmax(0, 1fr); gap: 12px; padding: 7px 0; align-items: baseline; }
.list time { color: var(--muted); font-size: 14px; font-variant-numeric: tabular-nums; }
.list a { color: var(--fg); text-decoration: none; font-family: var(--serif); }
.list a:hover, .list a:focus-visible { color: var(--accent); }
.empty { color: var(--muted); text-align: center; padding: 40px 0; }

.back { display: inline-block; color: var(--muted); text-decoration: none; font-size: 14px; margin-bottom: 20px; padding: 6px 0; }
.prose { font-family: var(--serif); font-size: 18px; line-height: 1.8; max-width: 36em; }
.prose h1 { font-size: 26px; line-height: 1.35; margin: 0 0 6px; text-wrap: balance; }
.prose h2 { font-size: 20px; margin: 1.6em 0 0.4em; }
.prose p { margin: 0 0 1em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1em; }
.prose code { font: 0.85em ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.prose .date { display: block; font: 14px var(--sans); color: var(--muted); margin-bottom: 1.6em; }
.prose .journal { white-space: pre-wrap; overflow-wrap: anywhere; }
.prose figure { margin: 1.4em 0; }
.prose img { max-width: 100%; height: auto; display: block; border-radius: 2px; }
.prose figcaption { font: 13px/1.5 var(--sans); color: var(--muted); text-align: center; margin-top: 6px; }

/* 备案号（open-public-access D13） */
.icp { text-align: center; padding: 32px 16px 24px; font: 13px/1.5 var(--sans); }
.icp a { color: var(--muted); text-decoration: none; }