:root { color-scheme: light dark; --max: 680px; --muted: #6b7280; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column;
       font-family: system-ui, "Microsoft YaHei", sans-serif; line-height: 1.8; }
header.site, main, footer { width: 100%; max-width: var(--max); margin: 0 auto; padding-left: 1.5rem; padding-right: 1.5rem; }
header.site { padding-top: 1.5rem; display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: .5rem; }
header.site a.brand { font-weight: 700; text-decoration: none; color: inherit; }
header.site nav a { margin-left: 1rem; color: inherit; }
main { flex: 1; padding-top: 2rem; padding-bottom: 2rem; }
h1 { margin-top: 0; line-height: 1.3; }
h2 { margin-top: 2rem; }
.meta, .muted { color: var(--muted); font-size: .9rem; }
.post-list { list-style: none; padding: 0; }
.post-list li { margin: 0 0 1.25rem; }
.post-list a { font-weight: 600; }
.post-list p { margin: .25rem 0 0; }
.tag { display: inline-block; padding: 0 .5rem; margin-left: .5rem; font-size: .75rem; border: 1px solid currentColor; border-radius: 999px; opacity: .7; }
footer { text-align: center; padding-top: 1.5rem; padding-bottom: 1.5rem; font-size: .875rem; opacity: .8; }
footer a { color: inherit; }
footer p { margin: .25rem 0; }
blockquote { margin: 1rem 0; padding: .1rem 1rem; border-left: 3px solid var(--muted); color: var(--muted); }