*,*:before,*:after{box-sizing:border-box}:root{--bg: #f4f6f9;--surface: #ffffff;--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626;--success: #16a34a;--warning: #d97706;--text: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .08)}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}.container{max-width:1100px;margin:0 auto;padding:0 1.5rem}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow)}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border:none;border-radius:var(--radius);cursor:pointer;font-weight:500;transition:background .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:var(--border);color:var(--text)}.btn-danger{background:var(--danger);color:#fff}.btn:disabled{opacity:.6;cursor:not-allowed}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.35rem;font-weight:500;font-size:.9rem}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.5rem .75rem;border:1px solid var(--border);border-radius:var(--radius)}.form-group input:focus,.form-group select:focus{outline:2px solid var(--primary);outline-offset:0}.error{color:var(--danger);font-size:.875rem;margin-top:.25rem}.success{color:var(--success)}.badge{display:inline-block;padding:.15rem .5rem;border-radius:999px;font-size:.75rem;font-weight:600}.badge-draft{background:#e2e8f0;color:#475569}.badge-pending{background:#fef3c7;color:#92400e}.badge-partially_signed{background:#dbeafe;color:#1e40af}.badge-signed{background:#dcfce7;color:#166534}.badge-revoked{background:#fee2e2;color:#991b1b}table{width:100%;border-collapse:collapse}th,td{padding:.75rem;text-align:left;border-bottom:1px solid var(--border)}th{font-weight:600;font-size:.85rem;color:var(--text-muted)}.tabs{display:flex;gap:.5rem;margin-bottom:1.5rem;border-bottom:1px solid var(--border)}.tab{padding:.75rem 1rem;border:none;background:none;cursor:pointer;color:var(--text-muted);border-bottom:2px solid transparent;margin-bottom:-1px}.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}