:root{font-family:system-ui,-apple-system,Segoe UI,sans-serif;color:#202124;background:#f6f7f9}body{margin:0}main{max-width:760px;margin:4rem auto;padding:2rem;background:#fff;border-radius:12px;box-shadow:0 2px 14px #00000012;line-height:1.6}h1{line-height:1.2}h2{margin-top:2rem;font-size:1.2rem}a{color:#1558b0}nav{display:flex;gap:1.5rem;margin:2rem 0}.small{font-size:.9rem;color:#5f6368}@media(max-width:800px){main{margin:0;border-radius:0;min-height:100vh;box-sizing:border-box}}