diff --git a/frontend/index.html b/frontend/index.html
index ec1d02c..928d0d3 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -1430,7 +1430,7 @@
 				<div id="test-view-report" class="hidden">
 					<div class="flex flex-wrap items-end gap-2 mb-3">
 						<button onclick="testViewShow('suites')" class="px-3 py-1.5 text-sm rounded bg-gray-200 dark:bg-slate-700 text-gray-700 dark:text-slate-300 hover:bg-gray-300 dark:hover:bg-slate-600">&larr; <span data-l10n="Suites">Suites</span></button>
-						<span id="test-report-title" class="flex-1 text-sm font-medium"></span>
+						<span id="test-report-title" class="flex-1 text-sm font-medium text-gray-700 dark:text-slate-200"></span>
 						<button id="test-report-json" onclick="testReportExportJson()" class="px-3 py-1.5 text-sm rounded bg-gray-200 dark:bg-slate-700 text-gray-700 dark:text-slate-300 hover:bg-gray-300 dark:hover:bg-slate-600" data-l10n="Export JSON">Export JSON</button>
 						<button id="test-report-md" onclick="testReportExportMarkdown()" class="px-3 py-1.5 text-sm rounded bg-gray-200 dark:bg-slate-700 text-gray-700 dark:text-slate-300 hover:bg-gray-300 dark:hover:bg-slate-600" data-l10n="Export Markdown">Export Markdown</button>
 						<button onclick="testClearReport()" class="px-3 py-1.5 text-sm rounded bg-gray-200 dark:bg-slate-700 text-gray-700 dark:text-slate-300 hover:bg-gray-300 dark:hover:bg-slate-600" data-l10n="Clear report">Clear report</button>
@@ -8295,14 +8295,25 @@ function testRenderReport() {
 	if (snap.adm && snap.adm.required) parts.push('ADM: ' + (snap.adm.verified ? t('verified') : t('not verified')));
 	if (snap.error) parts.push(esc(snap.error));
 	sumEl.innerHTML = esc(parts.join(' · '));
+	// A live run re-renders this block on every poll: replacing innerHTML
+	// creates fresh <details>, so an expanded Run log would collapse each
+	// time.  Carry the open state across the re-render (the member list is
+	// fixed at run start, so the index is a stable key).
+	const openLogs = {};
+	memEl.querySelectorAll('details[data-member]').forEach(d => {
+		openLogs[d.dataset.member] = d.open;
+	});
 	memEl.innerHTML = (s.members || []).map(testReportMemberHtml).join('');
+	memEl.querySelectorAll('details[data-member]').forEach(d => {
+		if (openLogs[d.dataset.member]) d.open = true;
+	});
 }
 
 function testReportMemberHtml(m, i) {
 	let html = '<div class="border border-gray-200 dark:border-slate-700 rounded mb-2">'
 		+ '<div class="flex items-center gap-2 px-2 py-1.5 bg-gray-50 dark:bg-slate-800/50">'
 		+ '<span class="w-5 text-right text-xs text-gray-400">' + (i + 1) + '</span>'
-		+ '<span class="flex-1 truncate">' + esc(m.name || m.script_id || '') + '</span>';
+		+ '<span class="flex-1 truncate text-gray-700 dark:text-slate-200">' + esc(m.name || m.script_id || '') + '</span>';
 	if (m.role && m.role !== 'member') {
 		html += '<span class="text-xs px-1.5 py-0.5 rounded bg-gray-200 dark:bg-slate-700">' + esc(t(m.role)) + '</span>';
 	}
@@ -8311,7 +8322,7 @@ function testReportMemberHtml(m, i) {
 	if (m.note) html += '<div class="px-2 py-1 text-xs text-red-500">' + esc(m.note) + '</div>';
 	if ((m.steps || []).length) html += '<div class="px-2 py-1">' + m.steps.map(testRunStepHtml).join('') + '</div>';
 	if ((m.log || []).length) {
-		html += '<details class="px-2 pb-1"><summary class="text-xs text-gray-500 cursor-pointer">'
+		html += '<details class="px-2 pb-1" data-member="' + i + '"><summary class="text-xs text-gray-500 cursor-pointer">'
 			+ esc(t('Run log')) + (m.log_truncated ? ' (' + esc(t('truncated')) + ')' : '') + '</summary>'
 			+ '<pre class="text-xs whitespace-pre-wrap break-all text-gray-500 dark:text-slate-400 max-h-64 overflow-auto">'
 			+ esc(m.log.join('\n')) + '</pre></details>';
diff --git a/frontend/style.css b/frontend/style.css
index 4198c55..c647f01 100644
--- a/frontend/style.css
+++ b/frontend/style.css
@@ -620,6 +620,10 @@ video {
   visibility: visible;
 }
 
+.collapse {
+  visibility: collapse;
+}
+
 .static {
   position: static;
 }
@@ -976,12 +980,12 @@ video {
   min-width: 0px;
 }
 
-.min-w-\[14rem\] {
-  min-width: 14rem;
+.min-w-\[12rem\] {
+  min-width: 12rem;
 }
 
-.min-w-\[16rem\] {
-  min-width: 16rem;
+.min-w-\[14rem\] {
+  min-width: 14rem;
 }
 
 .min-w-\[180px\] {
@@ -1357,6 +1361,11 @@ video {
   border-top-color: transparent;
 }
 
+.bg-amber-100 {
+  --tw-bg-opacity: 1;
+  background-color: rgb(254 243 199 / var(--tw-bg-opacity, 1));
+}
+
 .bg-amber-50 {
   --tw-bg-opacity: 1;
   background-color: rgb(255 251 235 / var(--tw-bg-opacity, 1));
@@ -1439,6 +1448,11 @@ video {
   background-color: rgb(250 250 250 / var(--tw-bg-opacity, 1));
 }
 
+.bg-purple-100 {
+  --tw-bg-opacity: 1;
+  background-color: rgb(243 232 255 / var(--tw-bg-opacity, 1));
+}
+
 .bg-red-100 {
   --tw-bg-opacity: 1;
   background-color: rgb(254 226 226 / var(--tw-bg-opacity, 1));
@@ -1571,6 +1585,10 @@ video {
   padding-bottom: 0.25rem;
 }
 
+.pb-1\.5 {
+  padding-bottom: 0.375rem;
+}
+
 .pb-3 {
   padding-bottom: 0.75rem;
 }
@@ -1591,6 +1609,10 @@ video {
   padding-left: 1.5rem;
 }
 
+.pl-7 {
+  padding-left: 1.75rem;
+}
+
 .pr-2 {
   padding-right: 0.5rem;
 }
@@ -1784,6 +1806,11 @@ video {
   color: rgb(147 51 234 / var(--tw-text-opacity, 1));
 }
 
+.text-purple-700 {
+  --tw-text-opacity: 1;
+  color: rgb(126 34 206 / var(--tw-text-opacity, 1));
+}
+
 .text-red-400 {
   --tw-text-opacity: 1;
   color: rgb(248 113 113 / var(--tw-text-opacity, 1));
@@ -2028,6 +2055,10 @@ video {
   background-color: rgb(120 53 15 / 0.2);
 }
 
+.dark\:bg-amber-900\/40:is(.dark *) {
+  background-color: rgb(120 53 15 / 0.4);
+}
+
 .dark\:bg-blue-500:is(.dark *) {
   --tw-bg-opacity: 1;
   background-color: rgb(59 130 246 / var(--tw-bg-opacity, 1));
@@ -2049,6 +2080,10 @@ video {
   background-color: rgb(6 78 59 / 0.4);
 }
 
+.dark\:bg-purple-900\/40:is(.dark *) {
+  background-color: rgb(88 28 135 / 0.4);
+}
+
 .dark\:bg-red-900\/30:is(.dark *) {
   background-color: rgb(127 29 29 / 0.3);
 }
@@ -2067,6 +2102,10 @@ video {
   background-color: rgb(30 41 59 / 0.4);
 }
 
+.dark\:bg-slate-800\/50:is(.dark *) {
+  background-color: rgb(30 41 59 / 0.5);
+}
+
 .dark\:bg-slate-800\/60:is(.dark *) {
   background-color: rgb(30 41 59 / 0.6);
 }
@@ -2126,6 +2165,11 @@ video {
   color: rgb(129 140 248 / var(--tw-text-opacity, 1));
 }
 
+.dark\:text-purple-300:is(.dark *) {
+  --tw-text-opacity: 1;
+  color: rgb(216 180 254 / var(--tw-text-opacity, 1));
+}
+
 .dark\:text-purple-400:is(.dark *) {
   --tw-text-opacity: 1;
   color: rgb(192 132 252 / var(--tw-text-opacity, 1));
diff --git a/frontend/sw.js b/frontend/sw.js
index 35019e1..376e187 100644
--- a/frontend/sw.js
+++ b/frontend/sw.js
@@ -1,4 +1,4 @@
-const CACHE = 'simple-v398';
+const CACHE = 'simple-v400';
 const URLS = [
   'index.html',
   'help.html',
diff --git a/frontend/tests/testsuites.test.js b/frontend/tests/testsuites.test.js
index d4912ef..b129b56 100644
--- a/frontend/tests/testsuites.test.js
+++ b/frontend/tests/testsuites.test.js
@@ -184,3 +184,30 @@ test('role rows cannot be moved and the i18n refresh redraws the test views', ()
 	const i18n = extractFunc(html, 'refreshDynamicI18n');
 	assert.match(i18n, /isViewVisible\('phone-sub-test'\)\) testRender\(\)/);
 });
+
+test('the report keeps an expanded run log open across the live polls', () => {
+	// A live suite run re-renders the member blocks on every poll; replacing
+	// innerHTML creates fresh <details>, so the open state is carried over
+	// by the stable member index.
+	const member = extractFunc(html, 'testReportMemberHtml');
+	assert.match(member, /data-member="/);
+	const report = extractFunc(html, 'testRenderReport');
+	assert.match(report, /details\[data-member\]/);
+	assert.match(report, /openLogs\[d\.dataset\.member\]/);
+	assert.match(report, /d\.open = true/);
+});
+
+test('the report header classes are generated in the prebuilt stylesheet', () => {
+	// The stale-style trap (v3.22.0 review): style.css is a prebuilt Tailwind
+	// output - a class used only in the PWA source has no rule until
+	// `npm run build` runs in frontend/.  The report's member header is the
+	// regression case (a near-white bg + dark-theme text made titles vanish).
+	const css = fs.readFileSync(path.join(__dirname, '..', 'style.css'), 'utf8');
+	for (const sel of ['.bg-gray-50', '.dark\\:bg-slate-800\\/50',
+		'.dark\\:text-slate-200', '.bg-purple-100', '.dark\\:bg-purple-900\\/40',
+		'.min-w-\\[12rem\\]']) {
+		assert.ok(css.includes(sel), 'missing rule for ' + sel);
+	}
+	assert.match(extractFunc(html, 'testReportMemberHtml'),
+		/bg-gray-50 dark:bg-slate-800\/50/);
+});