:root{color-scheme:light dark}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#0f1115;color:#f3f5f9}a{color:inherit}.container{max-width:800px;margin:0 auto;padding:24px}.card{border:1px solid #2d3340;border-radius:16px;padding:24px;background:#171b24}.button{display:inline-block;background:#5f8bff;color:#fff;text-decoration:none;border-radius:10px;padding:12px 18px;font-weight:600}.muted{color:#aab2c5}.footer-links{display:flex;gap:16px;margin-top:18px}