:root{--ink:#17202b;--muted:#5f6b76;--brand:#d81f4f;--line:#dfe4e7;--wash:#f6f7f8}
*{box-sizing:border-box}body{margin:0;color:var(--ink);font:17px/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.shell{width:min(calc(100% - 2rem),820px);margin:auto}.site-header{border-bottom:1px solid var(--line);padding:1rem 0}.site-header img{width:150px}.content{padding:3.5rem 0 5rem}h1{font-size:clamp(2.2rem,6vw,4rem);line-height:1.05}h2{margin-top:2.5rem;line-height:1.25}p,li{color:var(--muted)}a{color:var(--brand);text-underline-offset:.18em}.notice{padding:1.2rem;border-left:4px solid var(--brand);background:var(--wash)}.site-footer{border-top:1px solid var(--line);padding:1.5rem 0;color:var(--muted)}.site-footer a{margin-right:1rem}