:root{color-scheme:light;--ink:#172b3b;--muted:#536473;--line:#dae3e7;--accent:#075f66}*{box-sizing:border-box}body{margin:0;background:#f5f7f8;color:var(--ink);font:16px/1.85 -apple-system,BlinkMacSystemFont,'Hiragino Kaku Gothic ProN','Yu Gothic',sans-serif}header,main,footer{max-width:900px;margin:auto;padding:24px}header{display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line)}header img{width:64px;height:64px;object-fit:contain}header strong{font-size:24px;letter-spacing:.02em}header small{display:block;color:var(--muted);font-size:13px}nav{margin-left:auto;display:flex;gap:18px;flex-wrap:wrap}a{color:var(--accent);text-underline-offset:4px}nav a{font-size:14px}main{padding-top:42px}h1{font-size:32px;line-height:1.35;margin:0 0 16px}h2{font-size:20px;margin:0 0 12px}p{margin:10px 0}.lead{font-size:18px;color:var(--muted);margin-bottom:32px}section{padding:26px 30px;background:white;border:1px solid var(--line);border-radius:12px;margin:18px 0}ol,ul{padding-left:24px}li+li{margin-top:9px}code{font-size:14px;background:#edf3f4;border-radius:4px;padding:3px 6px;overflow-wrap:anywhere}footer{color:var(--muted);font-size:13px;border-top:1px solid var(--line);margin-top:24px}a:focus-visible{outline:3px solid #d74838;outline-offset:5px}@media(max-width:650px){header{align-items:flex-start;flex-wrap:wrap}nav{width:100%;margin-left:0}main{padding-top:28px}h1{font-size:27px}section{padding:22px 20px}}