*,:after,:before{box-sizing:border-box}:root{--bg:#f1f4f8;--card:#fff;--text:#1f2933;--text-soft:#5b6772;--text-muted:#97a1ac;--border:#dde3ea;--border-strong:#c4ccd6;--brand:#22487b;--brand-hover:#2c5c9a;--danger:#c5364a;--danger-bg:#fdecee;--success:#2c7d4f;--success-bg:#e7f5ed}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Apple SD Gothic Neo,Malgun Gothic,sans-serif;font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}a{color:var(--brand)}button{font-family:inherit}input,select,textarea{font-family:inherit;font-size:15px;color:var(--text);background:var(--card);border:1px solid var(--border-strong);border-radius:8px;padding:10px 12px;width:100%;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(34,72,123,.12)}textarea{resize:vertical;min-height:120px}.fb-shell{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:40px 16px 64px}.fb-card{width:100%;max-width:600px;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:32px;box-shadow:0 6px 24px rgba(31,41,51,.07)}.fb-brand{display:flex;align-items:center;gap:10px;margin-bottom:24px}.fb-brand-mark{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,#22487b,#2c5c9a);display:flex;font-weight:800;font-size:16px}.fb-brand-mark,.fb-btn{color:#fff;align-items:center;justify-content:center}.fb-btn{display:inline-flex;gap:6px;padding:12px 18px;background:var(--brand);border:0;border-radius:9px;font-size:15px;font-weight:600;cursor:pointer;transition:background .14s}.fb-btn:hover:not(:disabled){background:var(--brand-hover)}.fb-btn:disabled{opacity:.55;cursor:default}.fb-btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--border-strong)}.fb-btn-ghost:hover:not(:disabled){background:var(--bg)}.fb-label{display:block;font-size:13px;font-weight:600;color:var(--text-soft);margin-bottom:6px}.fb-field{margin-bottom:18px}.fb-hint{font-size:12px;color:var(--text-muted);margin-top:4px}.fb-error{background:var(--danger-bg);color:var(--danger);margin-bottom:16px}.fb-error,.fb-success{border-radius:8px;padding:10px 12px;font-size:13px}.fb-success{background:var(--success-bg);color:var(--success)}