:root{
  --fg:#222;--muted:#666;--bg:#fafafa;--card:#fff;--line:#eee;--accent:#2b7cff;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
.wrap{max-width:860px;margin:10vh auto 12vh;padding:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:28px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
h1{margin:0 0 12px;font-size:24px}
h2{margin:24px 0 8px;font-size:18px}
p{margin:8px 0}
ul{margin:8px 0 0 20px}
li{margin:6px 0}
.badge{display:inline-block;font-size:12px;color:#fff;background:var(--accent);padding:3px 8px;border-radius:999px;margin-left:8px}
.muted{color:var(--muted)}
footer{margin-top:20px;color:var(--muted);font-size:12px;text-align:center}
.note{background:#f6f8ff;border:1px dashed #c9d6ff;color:#1b3f8b;border-radius:8px;padding:10px 12px;margin:12px 0}