:root{--bg: #0d1117;--card: #161b22;--fg: #e6edf3;--muted: #8b949e;--accent: #6e57ff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}.wrap{max-width:520px;margin:0 auto;padding:48px 20px}.brand{font-size:28px;font-weight:800;letter-spacing:.5px}.brand:first-letter{color:var(--accent)}.lead{color:var(--muted);margin:16px 0 24px}.btn{display:inline-block;border:0;cursor:pointer;background:var(--accent);color:#fff;font-weight:600;padding:14px 22px;border-radius:12px;font-size:16px;text-decoration:none;text-align:center}.btn:disabled{opacity:.5;cursor:default}.btn.small{padding:8px 12px;font-size:13px}.card{background:var(--card);border-radius:16px;padding:20px;margin-top:28px}.card h2{font-size:16px;margin:0 0 12px}.card ol{margin:8px 0;padding-left:20px}.card a{color:var(--accent)}.sub{display:flex;gap:8px;align-items:center;margin:10px 0}.sub code{flex:1;background:#0d1117;border:1px solid #30363d;border-radius:8px;padding:10px;font-size:12px;overflow-x:auto;white-space:nowrap}