*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f5f7fa;color:#172537;font:16px/1.85 system-ui,-apple-system,"PingFang SC",sans-serif}main{max-width:940px;margin:auto;padding:32px 24px 70px}header{padding:24px 0;border-bottom:2px solid #1aa9f8}h1{font-size:clamp(25px,4vw,36px);line-height:1.35}h2{font-size:23px;line-height:1.5;margin-top:38px}h3{font-size:19px}p{white-space:pre-line;overflow-wrap:anywhere}a{color:#076f9f}nav{display:flex;gap:12px 22px;flex-wrap:wrap}.notice{border:2px solid #b36a00;background:#fff5dc;padding:18px;border-radius:10px;margin:22px 0}.todo{border-left:4px solid #b36a00;background:#fff5dc;padding:12px}article{background:white;padding:10px 26px 28px;border-radius:12px;margin:24px 0}footer{font-size:14px;color:#526274}@media(max-width:550px){main{padding:16px}article{padding:8px 16px 22px}}@media print{body{background:white}.notice{border:2px solid #b36a00}main{padding:0}article{padding:0}h2,h3{break-after:avoid}}