Match Contracts UI to Obfuscator and add Help

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

site/static/app.js

@@ -58,7 +58,7 @@ filePicker = window.FilePicker.initFilePicker({
 function renderStepper(state) {
   var steps = state.ui.steps;
   var map = { upload: 'stepUpload', classify: 'stepClassify', groups: 'stepGroups', compare: 'stepCompare' };
-  var colors = { '○': 'var(--muted)', '⏳': 'var(--brand-primary)', '✓': 'var(--green)' };
+  var colors = { '○': 'var(--topbar-muted)', '⏳': 'var(--topbar-active)', '✓': 'var(--topbar-done)' };
   Object.keys(map).forEach(function(key) {
     var el = document.getElementById(map[key]);
     if (el) {