:root{--bg:#fff;--text:#000;--muted:#555;--maxw:1080px}*{box-sizing:border-box}html{font-size:125%}html,body{height:100%}body{color:#000;background:#fff;margin:0;font-family:Arial,Helvetica,sans-serif}h1,h2,h3{font-family:Arial,Helvetica,sans-serif}.container{max-width:var(--maxw);margin:0 auto;padding:24px}.stack{gap:16px;display:grid}.stack-lg{gap:28px;display:grid}.row{flex-wrap:wrap;align-items:center;gap:16px;display:flex}a{color:#05c;text-decoration:none}.muted{color:var(--muted)}.btn{cursor:pointer;color:#fff;background:#000;border:1px solid #000;padding:10px 14px;font-family:Arial,Helvetica,sans-serif;font-weight:600;text-decoration:none;display:inline-block}.btn--ghost{color:#000;background:0 0;border:1px solid #000}h1{margin:0 0 10px;font-size:2.5rem;line-height:1.15}h2{margin:0 0 10px;font-size:1.75rem;line-height:1.2}h3{margin:0 0 8px;font-size:1.25rem;line-height:1.3}p{margin:0}small{color:var(--muted)}