:root{
  --fg:#111;
  --muted:#666;
  --bg:#fff;
  --card:#f6f7f9;
  --brand:#0b57d0;
  --border:#e6e8eb;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  color:var(--fg);
  background:var(--bg);
  line-height:1.65;
}
.container{max-width:980px;margin:0 auto;padding:28px 18px}
header{padding:10px 0 18px;border-bottom:1px solid var(--border);margin-bottom:18px}
.brand{font-size:22px;font-weight:700;margin:0}
.sub{margin:8px 0 0;color:var(--muted)}
a{color:var(--brand);text-decoration:none;overflow-wrap:anywhere;word-break:break-word}
a:hover{text-decoration:underline}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin:14px 0}
.meta{color:var(--muted);font-size:14px}
.list{margin:0;padding-left:18px}
.footer{margin-top:28px;padding-top:14px;border-top:1px solid var(--border);color:var(--muted);font-size:13px}
.badge{display:inline-block;font-size:12px;padding:2px 8px;border:1px solid var(--border);border-radius:999px;background:#fff;color:var(--muted)}
hr{border:0;border-top:1px solid var(--border);margin:20px 0}
code{background:#f2f2f2;padding:2px 6px;border-radius:6px}