:root {
  --bg: #fbfaf7;
  --fg: #23211d;
  --muted: #6f695f;
  --line: #e6e1d6;
  --accent: #c8581c;
  --code-bg: #f2eee5;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151413;
    --fg: #e8e4dc;
    --muted: #9a9387;
    --line: #2b2926;
    --accent: #f0975a;
    --code-bg: #1f1d1b;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.85 -apple-system, BlinkMacSystemFont, "PingFang TC", "Hiragino Sans CNS",
        "Noto Sans CJK TC", "Source Han Sans TC", "Microsoft JhengHei", sans-serif;
}
.wrap { max-width: 42rem; margin: 0 auto; padding: 0 1.25rem; }
a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: .2em; }
a:hover { color: var(--accent); }

header.site { padding: 2.2rem 0 1.4rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: .55rem; text-decoration: none; }
.brand .mark { width: 30px; height: 30px; }
.brand b { font-size: 1.15rem; letter-spacing: .08em; }
.brand small { color: var(--muted); font-size: .8rem; letter-spacing: .04em; }
nav a { margin-left: 1.1rem; text-decoration: none; color: var(--muted); font-size: .95rem; }
nav a:first-child { margin-left: 0; }
nav a:hover, nav a[aria-current] { color: var(--fg); }

main { padding-bottom: 3rem; }
h1, h2, h3 { line-height: 1.4; font-weight: 650; }
h1 { font-size: 1.75rem; margin: 1.2rem 0 .4rem; }
h2 { font-size: 1.2rem; margin: 2.2rem 0 .6rem; }
p, ul, ol, pre { margin: 0 0 1.1rem; }
ul, ol { padding-left: 1.3rem; }
li { margin: .25rem 0; }
code {
  font: .86em/1.6 ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  background: var(--code-bg);
  padding: .1em .35em;
  border-radius: 4px;
}
pre { background: var(--code-bg); padding: 1rem 1.1rem; border-radius: 8px; overflow-x: auto; }
pre code { background: none; padding: 0; font-size: .82rem; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

.intro { font-size: 1.05rem; margin-top: 1rem; }
.meta { color: var(--muted); font-size: .9rem; margin: 0 0 2rem; }
.section-title { font-size: .85rem; letter-spacing: .12em; color: var(--muted); font-weight: 600; margin: 2.6rem 0 .8rem; }
.posts { list-style: none; padding: 0; margin: 0; }
.posts li { display: flex; gap: 1.2rem; padding: .55rem 0; border-bottom: 1px solid var(--line); margin: 0; }
.posts time { color: var(--muted); font-variant-numeric: tabular-nums; font-size: .92rem; flex: 0 0 6.2rem; padding-top: .08rem; }
.posts a { text-decoration: none; }
.year { font-size: 1rem; color: var(--muted); margin: 2rem 0 .3rem; }
.now { border-left: 3px solid var(--accent); padding: .2rem 0 .2rem 1rem; }
.now p { margin: .2rem 0; }
.backlink { margin-top: 3rem; font-size: .95rem; }

footer.site { border-top: 1px solid var(--line); padding: 1.4rem 0 2.6rem; color: var(--muted); font-size: .85rem; }
footer.site a { color: inherit; }

@media (max-width: 30rem) {
  body { font-size: 16px; }
  .posts li { flex-direction: column; gap: 0; }
  .posts time { flex: none; }
}