:root{--background:#fff;--foreground:#171717;--accent:#0070f3;--border:#eaeaea}body{color:var(--foreground);background:var(--background);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}main{max-width:800px;margin:0 auto;padding:4rem 1.5rem}.hero{text-align:center;margin-bottom:4rem}h1{letter-spacing:-.05em;margin-bottom:1rem;font-size:3rem;font-weight:800}.subtitle{color:#666;margin-bottom:2rem;font-size:1.25rem}.card{border:1px solid var(--border);background:#fafafa;border-radius:12px;margin-bottom:2rem;padding:2rem}.btn{background:var(--foreground);color:#fff;border-radius:6px;padding:.75rem 1.5rem;font-weight:600;text-decoration:none;transition:opacity .2s;display:inline-block}.btn:hover{opacity:.9}.feature-list{margin:2rem 0;padding:0;list-style:none}.feature-list li{align-items:center;margin-bottom:.75rem;display:flex}.feature-list li:before{content:"✓";color:var(--accent);margin-right:.75rem;font-weight:700}