*{box-sizing:border-box}
body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;margin:0;color:#222;background:#f7f7f7}
a{color:#0a58ca;text-decoration:none}
header{background:#111;color:#fff;padding:14px 20px}
header .wrap{max-width:980px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}
main{max-width:980px;margin:20px auto;padding:0 20px}
.post{background:#fff;border:1px solid #e6e6e6;border-radius:8px;padding:16px;margin-bottom:16px}
.post h2{margin:0 0 8px;font-size:22px}
.meta{font-size:12px;color:#666;margin-bottom:8px}
.summary{font-size:14px;line-height:1.6;color:#333}
.code{background:#1e1e1e;color:#eee;border-radius:8px;padding:12px;overflow:auto}
.cm-s-default .cm-keyword{color:#c586c0}
.cm-s-default .cm-string{color:#ce9178}
.cm-s-default .cm-number{color:#b5cea8}
.cm-s-default .cm-comment{color:#6a9955}
.topbar{display:flex;gap:12px}
.btn{display:inline-block;background:#0a58ca;color:#fff;padding:8px 12px;border-radius:6px}
.btn.secondary{background:#555}
.container{max-width:980px;margin:20px auto;padding:0 20px}
.detail h1{margin:0 0 10px}
.detail .body{white-space:pre-wrap;line-height:1.7}