*{box-sizing:border-box}body{margin:0;background:#f5f7fc;color:#193252;font:16px/1.8 -apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif}header{background:#fff;border-bottom:1px solid #e0e7f2;padding:16px 24px}header a{font-size:20px;font-weight:700;text-decoration:none}main{max-width:800px;margin:24px auto;padding:28px;background:#fff;border:1px solid #e0e7f2;border-radius:16px}h1{font-size:26px;margin:0 0 8px}h2{font-size:19px;margin-top:28px}a{color:#2454ca;overflow-wrap:anywhere}.meta,footer{color:#63758e;font-size:14px}nav{display:flex;gap:20px;flex-wrap:wrap}footer{max-width:800px;margin:20px auto;padding:0 24px 30px}li{margin-bottom:8px}@media(max-width:600px){main{margin:12px;padding:20px}h1{font-size:23px}}