:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;color:#20332b;background:#f5f8f6;font-synthesis:none;line-height:1.85}
*{box-sizing:border-box}body{max-width:880px;margin:0 auto;padding:0 28px}a{color:#276b4b;text-underline-offset:4px;overflow-wrap:anywhere}header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:28px 0;border-bottom:1px solid #dbe5df}.brand{color:inherit;font-weight:700;font-size:21px;text-decoration:none}nav{font-size:14px}main{background:#fff;border:1px solid #e0e8e3;border-radius:16px;margin:36px 0;padding:40px}h1{font-size:30px;letter-spacing:-.03em;line-height:1.5;margin:0 0 24px}h2{font-size:19px;line-height:1.6;margin:0 0 12px}p{margin:0 0 16px}p:last-child{margin-bottom:0}.lead{font-size:21px;line-height:1.75}section{border-top:1px solid #e4eae6;margin-top:30px;padding-top:28px}.muted{color:#68786e;font-size:14px}code{font-size:14px;overflow-wrap:anywhere}footer{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:14px;padding:0 0 32px}a:focus-visible{outline:3px solid #28764f;outline-offset:4px}@media(max-width:600px){body{padding:0 18px}header{padding:20px 0}.brand{font-size:19px}nav{font-size:13px}main{margin:24px 0;padding:25px 21px}h1{font-size:25px}.lead{font-size:19px}p{font-size:16px}}