:root{color-scheme:light}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#f7f7f7;color:#0f172a}a{color:#2563eb;text-decoration:none}a:hover{text-decoration:underline}.navbar{display:flex;align-items:center;gap:1rem;padding:1rem 1.5rem;background:#fff;border-bottom:1px solid #e5e7eb;position:-webkit-sticky;position:sticky;top:0;z-index:10}.navbar__brand{font-weight:700;color:#0f172a}.navbar__spacer{flex:1 1}.container{max-width:960px;padding:2rem 1.5rem;margin:0 auto}.card{background:#fff;border:1px solid #e5e7eb;border-radius:.75rem;padding:1.5rem;box-shadow:0 10px 30px rgba(15,23,42,.05)}.button{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;border:none;border-radius:.5rem;padding:.75rem 1.25rem;font-weight:600;cursor:pointer;background:#2563eb;color:#fff}.button:disabled{opacity:.6;cursor:not-allowed}.input{width:100%;padding:.75rem .9rem;border-radius:.5rem;border:1px solid #cbd5e1;font-size:1rem;margin-bottom:1rem}.input:focus{outline:2px solid #2563eb;border-color:transparent}.text-muted{color:#475569}