:root{--bg:#fff;--bg-subtle:#f7f8fa;--text:#111827;--text-muted:#4b5563;--border:#e5e7eb;--accent:#1d4ed8;--accent-hover:#1e40af;--radius:10px;--max:1080px;--prose:760px}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:17px;line-height:1.65}a{color:var(--accent);text-underline-offset:2px}a:hover{color:var(--accent-hover)}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}h1,h2,h3{color:var(--text);line-height:1.25}h1{letter-spacing:-.02em;margin:0 0 .75rem;font-size:clamp(2rem,4vw,2.75rem)}h2{margin:2.5rem 0 .75rem;font-size:1.5rem}h3{margin:1.75rem 0 .5rem;font-size:1.15rem}p,ul,ol{margin:0 0 1rem}li+li{margin-top:.35rem}.container{max-width:var(--max);margin:0 auto;padding:0 1.25rem}.prose{max-width:var(--prose);margin:0 auto;padding:3rem 1.25rem 4rem}.muted{color:var(--text-muted)}.skip-link{position:absolute;top:0;left:-9999px}.skip-link:focus{z-index:10;background:var(--bg);border:1px solid var(--border);padding:.5rem .75rem;top:1rem;left:1rem}.site-header{border-bottom:1px solid var(--border);background:var(--bg)}.site-header .container{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.75rem 1.5rem;padding-top:1rem;padding-bottom:1rem;display:flex}.wordmark{color:var(--text);letter-spacing:-.01em;font-size:1.3rem;font-weight:700;text-decoration:none}.site-nav ul{flex-wrap:wrap;gap:.25rem 1.25rem;margin:0;padding:0;list-style:none;display:flex}.site-nav li+li{margin-top:0}.site-nav a{color:var(--text-muted);font-size:.97rem;text-decoration:none}.site-nav a:hover{color:var(--text);text-decoration:underline}.site-footer{border-top:1px solid var(--border);background:var(--bg-subtle);padding:2rem 0;font-size:.95rem}.site-footer .container{flex-wrap:wrap;justify-content:space-between;gap:1rem 2rem;display:flex}.site-footer ul{flex-wrap:wrap;gap:.25rem 1.25rem;margin:0;padding:0;list-style:none;display:flex}.site-footer li+li{margin-top:0}.site-footer p{margin:0}.hero{border-bottom:1px solid var(--border);padding:4.5rem 0 3.5rem}.hero p{color:var(--text-muted);max-width:640px;font-size:1.2rem}.button{border-radius:var(--radius);background:var(--accent);color:#fff;margin-top:.75rem;padding:.7rem 1.2rem;font-weight:600;text-decoration:none;display:inline-block}.button:hover{background:var(--accent-hover);color:#fff}.section{padding:3.5rem 0}.section h2{margin-top:0}.grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;margin-top:1.5rem;display:grid}.card{border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);padding:1.25rem 1.4rem}.card h3{margin-top:0}.card ul{margin:0;padding-left:1.1rem}.notice{border:1px solid var(--border);border-left:4px solid var(--accent);background:var(--bg-subtle);border-radius:var(--radius);margin:1.5rem 0;padding:1.1rem 1.35rem}.notice p:last-child{margin-bottom:0}.effective{color:var(--text-muted);margin-bottom:2rem}.link-list{padding-left:1.1rem}.example{margin:1rem 0 1.5rem}.example-tag{border:1px dashed var(--border);color:var(--text-muted);border-radius:999px;margin:0 0 .5rem;padding:.15rem .6rem;font-size:.9rem;display:inline-block}.example-panel{border:1px dashed var(--text-muted);border-radius:var(--radius);background:var(--bg-subtle);-webkit-user-select:none;user-select:none;max-width:320px;padding:1rem 1.25rem}.example-heading{margin:0 0 .5rem;font-weight:600}.example-list{margin:0;padding:0;list-style:none}.example-mark{width:1.5rem;color:var(--accent);font-weight:700;display:inline-block}.example figcaption{margin-top:.6rem;font-size:.95rem}