:root{--tx-primary:#b51f2a;--tx-dark:#17191d;--tx-bg:#f5f6f8;--tx-border:#dee2e6}body{margin:0;background:var(--tx-bg);font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:#212529}.navbar-brand{font-weight:800}.tx-navbar{background:var(--tx-dark);color:#fff}.tx-nav-link{color:#fff!important}.card{border-radius:.75rem}.technique-step-row{background:#fff}.table td,.table th{vertical-align:middle}.form-label{font-weight:600}.ajax-message-ok{color:#198754}.ajax-message-error{color:#dc3545}