:root {
  --bg: #fdfdfc;
  --fg: #1d1d1f;
  --muted: #6b6b70;
  --accent: #d9480f;
  --border: #e6e6e3;
  --code-bg: #f3f3f1;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --fg: #e8e8ea;
    --muted: #9a9aa2;
    --accent: #ff8a4c;
    --border: #2a2a2e;
    --code-bg: #1e1e22;
  }
}

* { box-sizing: border-box; }
html { font-size: 17px; }
body {
  margin: 0 auto;
  max-width: 720px;
  padding: 0 16px;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: space-between; align-items: center;
  padding: 28px 0; border-bottom: 1px solid var(--border);
}
.logo { font-weight: 700; font-size: 1.2rem; color: var(--fg); }
.site-header nav a { margin-left: 18px; color: var(--muted); }
.site-header nav a:first-child { margin-left: 0; }

main { padding: 32px 0 48px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.35rem; margin-top: 2.2em; }
.intro p, .intro ul { color: var(--muted); font-size: 1.05rem; }
.intro ul { padding-left: 20px; }
.meta { color: var(--muted); font-size: 0.9rem; margin-top: 0; }

.post-list { list-style: none; padding: 0; }
.post-list li { display: flex; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.post-list time { color: var(--muted); font-variant-numeric: tabular-nums; min-width: 105px; font-size: 0.9rem; padding-top: 2px; }

img { max-width: 100%; height: auto; border-radius: 6px; }
figure { margin: 1.6em 0; text-align: center; }
figure img { display: block; margin: 0 auto; }
figcaption { color: var(--muted); font-size: 0.88rem; margin-top: 8px; }
figcaption p { margin: 0; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.9em; }
pre { padding: 14px 16px; border-radius: 8px; overflow-x: auto; font-size: 0.85rem; line-height: 1.5; }
pre code { background: none; padding: 0; }
blockquote { margin: 0; padding-left: 16px; border-left: 3px solid var(--border); color: var(--muted); }
table { border-collapse: collapse; width: 100%; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }

.site-footer {
  display: flex; gap: 18px; padding: 24px 0 40px;
  border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem;
}

@media (max-width: 520px) {
  .post-list li { flex-direction: column; gap: 0; }
}