:root{--bg:#0b0f14;--fg:#e6edf3;--muted:#8b949e;--accent:#2dd4bf;--radius:.625rem;--font-sans:ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body{min-height:100%;margin:0;padding:0}body{background:var(--bg);color:var(--fg);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;line-height:1.55}main{max-width:48rem;margin:0 auto;padding:6rem 1.5rem}h1{margin:0 0 .5rem;font-size:2.25rem}p{color:var(--muted);margin:0 0 1.5rem}.accent,a{color:var(--accent)}.btn{background:var(--accent);color:#04201c;border-radius:var(--radius);font:inherit;cursor:pointer;border:0;padding:.6rem 1.1rem;font-weight:600;display:inline-block}.btn:hover{filter:brightness(1.08)}code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.card{border-radius:var(--radius);color:var(--muted);background:#0e151d;border:1px solid #1f2a37;padding:1rem;overflow:auto}