body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:#222;background:#fff;line-height:1.55}
header{border-bottom:1px solid #e8e8e8}
.wrap{max-width:900px;margin:0 auto;padding:24px 16px}
h1{margin:0 0 10px;font-size:30px}
h2{margin:26px 0 10px;font-size:20px}
p,li{font-size:15px}
small{color:#666}
a{color:#2ea3f2}
.footer{margin-top:34px;padding-top:18px;border-top:1px solid #eee;color:#666;font-size:13px}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;background:#f2f7ff;color:#1c5fa8;font-size:12px;margin-left:8px}